feat: 홈 배경 별자리 및 비행 화면 배경 생성

feat: 일지 작성 화면
feat: 세션 진입 전 목표 세팅
2026-02-13 14:42:53 +09:00 · 2026-02-13 11:42:11 +09:00 · 2026-02-13 11:37:18 +09:00 · 2026-02-13 11:36:44 +09:00 · 2026-02-13 11:36:21 +09:00 · 2026-02-13 11:36:05 +09:00
18 changed files with 1738 additions and 260 deletions
--- a/.gitignore
+++ b/.gitignore
@@ -40,3 +40,4 @@ yarn-error.log*
 *.tsbuildinfo
 next-env.d.ts
 .idea
+.cli
--- a/src/app/boarding/page.tsx
+++ b/src/app/boarding/page.tsx
@@ -0,0 +1,89 @@
+'use client';
+
+import { useState, Suspense } from 'react';
+import { useRouter, useSearchParams } from 'next/navigation';
+import { ROUTES } from '@/lib/constants';
+import { saveCurrentVoyage } from '@/lib/store';
+import { Voyage } from '@/types';
+
+function BoardingContent() {
+  const router = useRouter();
+  const searchParams = useSearchParams();
+  const routeId = searchParams.get('routeId');
+  const route = ROUTES.find(r => r.id === routeId) || ROUTES[0];
+
+  const [mission, setMission] = useState('');
+  const [notes, setNotes] = useState('');
+
+  const handleDocking = () => {
+    if (!mission.trim()) return;
+
+    const newVoyage: Voyage = {
+      id: crypto.randomUUID(),
+      routeId: route.id,
+      routeName: route.name,
+      durationMinutes: route.durationMinutes,
+      startedAt: Date.now(),
+      status: 'in_progress',
+      missionText: mission,
+      notes: notes,
+    };
+
+    saveCurrentVoyage(newVoyage);
+    router.push('/flight');
+  };
+
+  return (
+    <div className="flex flex-col flex-1 p-6 animate-in slide-in-from-bottom-4 duration-500">
+      <div className="mb-8">
+        <h2 className="text-sm text-indigo-400 font-semibold mb-1 uppercase tracking-widest">Boarding Check</h2>
+        <h1 className="text-3xl font-bold text-white">{route.name} 항로 탑승</h1>
+      </div>
+
+      <div className="space-y-8 flex-1">
+        <div className="space-y-3">
+          <label className="block text-sm font-medium text-slate-300">
+            이번 항해의 핵심 목표
+          </label>
+          <input
+            type="text"
+            value={mission}
+            onChange={(e) => setMission(e.target.value)}
+            placeholder="예: 서론 3문단 완성하기"
+            className="w-full bg-slate-900/50 border-b-2 border-slate-700 focus:border-indigo-500 px-0 py-3 text-lg outline-none transition-colors placeholder:text-slate-600"
+            autoFocus
+          />
+        </div>
+
+        <div className="space-y-3">
+          <label className="block text-sm font-medium text-slate-400">
+            메모 (선택)
+          </label>
+          <input
+            type="text"
+            value={notes}
+            onChange={(e) => setNotes(e.target.value)}
+            placeholder="오늘의 컨디션이나 제약사항"
+            className="w-full bg-transparent border-b border-slate-800 focus:border-slate-500 px-0 py-2 text-base outline-none transition-colors placeholder:text-slate-700 text-slate-300"
+          />
+        </div>
+      </div>
+
+      <button
+        onClick={handleDocking}
+        disabled={!mission.trim()}
+        className="w-full py-4 bg-indigo-600 hover:bg-indigo-500 disabled:bg-slate-800 disabled:text-slate-500 text-white font-bold text-lg rounded-xl transition-all shadow-lg shadow-indigo-900/30 mt-8"
+      >
+        도킹 완료 (출항)
+      </button>
+    </div>
+  );
+}
+
+export default function BoardingPage() {
+  return (
+    <Suspense fallback={<div className="p-6">Loading...</div>}>
+      <BoardingContent />
+    </Suspense>
+  );
+}
--- a/src/app/debrief/page.tsx
+++ b/src/app/debrief/page.tsx
@@ -0,0 +1,118 @@
+'use client';
+
+import { useEffect, useState } from 'react';
+import { useRouter } from 'next/navigation';
+import { getCurrentVoyage, saveToHistory, saveCurrentVoyage } from '@/lib/store';
+import { Voyage, VoyageStatus } from '@/types';
+
+export default function DebriefPage() {
+  const router = useRouter();
+  const [voyage, setVoyage] = useState<Voyage | null>(null);
+  
+  const [status, setStatus] = useState<VoyageStatus | null>(null);
+  const [progress, setProgress] = useState('');
+  const [nextAction, setNextAction] = useState('');
+
+  useEffect(() => {
+    const current = getCurrentVoyage();
+    if (!current) {
+      router.replace('/');
+      return;
+    }
+    setVoyage(current);
+  }, [router]);
+
+  const handleSave = () => {
+    if (!voyage || !status) return;
+
+    const finalVoyage: Voyage = {
+      ...voyage,
+      status: status,
+      debriefProgress: progress,
+      nextAction: nextAction,
+      endedAt: voyage.endedAt || Date.now(), // Fallback if missed in flight
+    };
+
+    saveToHistory(finalVoyage);
+    saveCurrentVoyage(null);
+    router.push('/log');
+  };
+
+  if (!voyage) return null;
+
+  const statusOptions: { value: VoyageStatus; label: string; desc: string }[] = [
+    { value: 'completed', label: '✅ 계획대로', desc: '목표를 달성했습니다' },
+    { value: 'partial', label: '🌓 부분 진행', desc: '절반의 성공입니다' },
+    { value: 'reoriented', label: '🧭 방향 재설정', desc: '새로운 발견을 했습니다' },
+  ];
+
+  return (
+    <div className="flex flex-col flex-1 p-6 max-w-2xl mx-auto w-full animate-in zoom-in-95 duration-500">
+      <header className="mb-8 text-center">
+        <h1 className="text-2xl font-bold text-white mb-2">무사히 궤도에 도착했습니다</h1>
+        <p className="text-slate-400">이번 항해를 짧게 기록하고 마무리하세요.</p>
+      </header>
+
+      <div className="space-y-8 flex-1">
+        {/* Question 1: Status */}
+        <section>
+          <label className="block text-sm font-medium text-slate-300 mb-3">
+            항해 결과
+          </label>
+          <div className="grid grid-cols-1 sm:grid-cols-3 gap-3">
+            {statusOptions.map((opt) => (
+              <button
+                key={opt.value}
+                onClick={() => setStatus(opt.value)}
+                className={`p-4 rounded-xl border text-left transition-all ${
+                  status === opt.value
+                    ? 'bg-indigo-900/40 border-indigo-500 ring-1 ring-indigo-500'
+                    : 'bg-slate-900/50 border-slate-800 hover:bg-slate-800'
+                }`}
+              >
+                <div className="font-bold text-slate-200 mb-1">{opt.label}</div>
+                <div className="text-xs text-slate-500">{opt.desc}</div>
+              </button>
+            ))}
+          </div>
+        </section>
+
+        {/* Question 2: Secured */}
+        <section>
+          <label className="block text-sm font-medium text-slate-300 mb-2">
+            이번 항해에서 확보한 것 (What)
+          </label>
+          <input
+            type="text"
+            value={progress}
+            onChange={(e) => setProgress(e.target.value)}
+            placeholder="예: 기획안 목차 구성 완료"
+            className="w-full bg-slate-900/30 border border-slate-800 rounded-lg px-4 py-3 text-slate-200 focus:border-indigo-500 focus:ring-1 focus:ring-indigo-500 outline-none transition-all"
+          />
+        </section>
+
+        {/* Question 3: Next Action */}
+        <section>
+          <label className="block text-sm font-medium text-slate-300 mb-2">
+            다음 항해의 첫 행동 (Next)
+          </label>
+          <input
+            type="text"
+            value={nextAction}
+            onChange={(e) => setNextAction(e.target.value)}
+            placeholder="예: 본문 1챕터 초안 쓰기"
+            className="w-full bg-slate-900/30 border border-slate-800 rounded-lg px-4 py-3 text-slate-200 focus:border-indigo-500 focus:ring-1 focus:ring-indigo-500 outline-none transition-all"
+          />
+        </section>
+      </div>
+
+      <button
+        onClick={handleSave}
+        disabled={!status}
+        className="w-full mt-10 py-4 bg-indigo-600 hover:bg-indigo-500 disabled:bg-slate-800 disabled:text-slate-500 text-white font-bold rounded-xl transition-all shadow-lg shadow-indigo-900/20"
+      >
+        항해일지 저장
+      </button>
+    </div>
+  );
+}
--- a/src/app/flight/page.tsx
+++ b/src/app/flight/page.tsx
@@ -0,0 +1,118 @@
+'use client';
+
+import { useEffect, useState, useRef } from 'react';
+import { useRouter } from 'next/navigation';
+import { getCurrentVoyage, saveCurrentVoyage, getPreferences } from '@/lib/store';
+import { Voyage } from '@/types';
+import FlightBackground from '@/components/FlightBackground';
+
+export default function FlightPage() {
+  const router = useRouter();
+  const [voyage, setVoyage] = useState<Voyage | null>(null);
+  const [timeLeft, setTimeLeft] = useState(0); // seconds
+  const [isPaused, setIsPaused] = useState(false);
+  const [hideSeconds, setHideSeconds] = useState(false);
+  
+  const endTimeRef = useRef<number>(0);
+
+  useEffect(() => {
+    const current = getCurrentVoyage();
+    if (!current || current.status !== 'in_progress') {
+      router.replace('/');
+      return;
+    }
+    setVoyage(current);
+    
+    const now = Date.now();
+    const target = current.startedAt + (current.durationMinutes * 60 * 1000);
+    endTimeRef.current = target;
+
+    const remainingMs = target - now;
+    setTimeLeft(Math.max(0, Math.ceil(remainingMs / 1000)));
+
+    const prefs = getPreferences();
+    setHideSeconds(prefs.hideSeconds);
+  }, [router]);
+
+  useEffect(() => {
+    if (!voyage || isPaused) return;
+
+    const interval = setInterval(() => {
+      const now = Date.now();
+      const diff = endTimeRef.current - now;
+      
+      if (diff <= 0) {
+        setTimeLeft(0);
+        clearInterval(interval);
+      } else {
+        setTimeLeft(Math.ceil(diff / 1000));
+      }
+    }, 1000);
+
+    return () => clearInterval(interval);
+  }, [voyage, isPaused]);
+
+  const handlePauseToggle = () => {
+    if (isPaused) {
+      endTimeRef.current = Date.now() + (timeLeft * 1000);
+      setIsPaused(false);
+    } else {
+      setIsPaused(true);
+    }
+  };
+
+  const handleFinish = () => {
+    if (!voyage) return;
+    const ended: Voyage = { ...voyage, endedAt: Date.now() };
+    saveCurrentVoyage(ended);
+    router.push('/debrief');
+  };
+
+  if (!voyage) return null;
+
+  const formatTime = (seconds: number) => {
+    const m = Math.floor(seconds / 60);
+    const s = seconds % 60;
+    if (hideSeconds) return `${m}m`;
+    return `${m.toString().padStart(2, '0')}:${s.toString().padStart(2, '0')}`;
+  };
+
+  return (
+    <div className="flex flex-col flex-1 items-center justify-center p-6 text-white relative overflow-hidden min-h-[calc(100vh-64px)]">
+      <FlightBackground vanishYOffset={-68} centerProtectRadius={200} />
+      
+      {/* UI Element 1: Label */}
+      <div className="absolute top-8 text-center z-10">
+        <span className="text-xs font-medium text-indigo-300 uppercase tracking-widest border border-indigo-500/30 bg-indigo-950/50 backdrop-blur px-4 py-1.5 rounded-full shadow-[0_0_15px_rgba(99,102,241,0.3)]">
+          {voyage.routeName} · {isPaused ? '일시정지' : '순항 중'}
+        </span>
+      </div>
+
+      {/* UI Element 2: Timer */}
+      <div className={`font-mono font-light tracking-tighter tabular-nums text-7xl md:text-9xl my-12 relative z-10 drop-shadow-2xl transition-opacity duration-300 ${isPaused ? 'opacity-50' : 'opacity-100'}`}>
+        {formatTime(timeLeft)}
+      </div>
+
+      {/* UI Element 3: Mission */}
+      <div className="text-xl md:text-2xl text-slate-200 text-center max-w-2xl mb-24 font-medium leading-relaxed relative z-10 drop-shadow-md px-4">
+        &ldquo;{voyage.missionText}&rdquo;
+      </div>
+
+      {/* UI Element 4 & 5: Controls */}
+      <div className="flex gap-6 absolute bottom-12 z-10">
+        <button 
+          onClick={handlePauseToggle}
+          className="px-8 py-3 rounded-full border border-slate-600 bg-slate-900/50 backdrop-blur text-slate-300 hover:text-white hover:border-slate-400 hover:bg-slate-800/80 transition-all text-sm font-bold uppercase tracking-wide"
+        >
+          {isPaused ? '다시 시작' : '일시정지'}
+        </button>
+        <button 
+          onClick={handleFinish}
+          className="px-8 py-3 rounded-full bg-slate-100 text-slate-900 hover:bg-indigo-500 hover:text-white transition-all text-sm font-bold uppercase tracking-wide shadow-lg shadow-white/10"
+        >
+          {timeLeft === 0 ? '도착 (회고)' : '항해 종료'}
+        </button>
+      </div>
+    </div>
+  );
+}
--- a/src/app/globals.css
+++ b/src/app/globals.css
@@ -123,3 +123,122 @@
    @apply bg-background text-foreground;
  }
 }
+
+@layer utilities {
+  @keyframes twinkle {
+    0%,
+    100% {
+      opacity: 1;
+    }
+    50% {
+      opacity: 0.6;
+    }
+  }
+
+  @keyframes star-core-pulse {
+    0%,
+    38%,
+    100% {
+      opacity: var(--core-low, 0.25);
+    }
+    52% {
+      opacity: var(--core-high, 0.55);
+    }
+  }
+
+  @keyframes star-glint-pulse {
+    0%,
+    35%,
+    100% {
+      opacity: var(--glint-base, 0.02);
+    }
+    50% {
+      opacity: var(--glint-peak, 0.82);
+    }
+    60% {
+      opacity: calc(var(--glint-peak, 0.82) * 0.12);
+    }
+  }
+
+  @keyframes star-bloom-pulse {
+    0%,
+    35%,
+    100% {
+      opacity: var(--bloom-base, 0.01);
+    }
+    50% {
+      opacity: var(--bloom-peak, 0.18);
+    }
+    60% {
+      opacity: calc(var(--bloom-peak, 0.18) * 0.2);
+    }
+  }
+
+  .animate-twinkle {
+    animation: twinkle 4s ease-in-out infinite;
+  }
+
+  .star-core {
+    animation-name: star-core-pulse;
+    animation-timing-function: ease-in-out;
+    animation-iteration-count: infinite;
+    opacity: var(--core-low, 0.25);
+    fill: currentColor;
+  }
+
+  .star-core-bloom {
+    animation-name: star-bloom-pulse;
+    animation-timing-function: ease-in-out;
+    animation-iteration-count: infinite;
+    opacity: var(--bloom-base, 0.01);
+    fill: currentColor;
+    filter: blur(0.7px);
+  }
+
+  .star-glint {
+    animation-name: star-glint-pulse;
+    animation-timing-function: ease-in-out;
+    animation-iteration-count: infinite;
+    opacity: var(--glint-base, 0.02);
+    stroke-width: 0.62;
+    stroke-linecap: round;
+  }
+
+  .star-glint-bloom {
+    animation-name: star-bloom-pulse;
+    animation-timing-function: ease-in-out;
+    animation-iteration-count: infinite;
+    opacity: var(--bloom-base, 0.01);
+    stroke-width: 0.9;
+    stroke-linecap: round;
+    filter: blur(0.65px);
+  }
+
+  @media (prefers-reduced-motion: reduce) {
+    .animate-twinkle {
+      animation: none;
+
+      opacity: 0.8;
+    }
+
+    .star-core {
+      animation: none;
+      opacity: var(--core-reduced, 0.34);
+    }
+
+    .star-core-bloom {
+      animation: none;
+      opacity: 0.08;
+    }
+
+    .star-glint {
+      animation: none;
+      opacity: 0.08;
+    }
+
+    .star-glint-bloom {
+      animation: none;
+      opacity: 0.04;
+    }
+  }
+}
--- a/src/app/layout.tsx
+++ b/src/app/layout.tsx
@@ -1,20 +1,10 @@
 import type { Metadata } from "next";
-import { Geist, Geist_Mono } from "next/font/google";
 import "./globals.css";
-
-const geistSans = Geist({
-  variable: "--font-geist-sans",
-  subsets: ["latin"],
-});
-
-const geistMono = Geist_Mono({
-  variable: "--font-geist-mono",
-  subsets: ["latin"],
-});
+import Link from "next/link";

 export const metadata: Metadata = {
-  title: "Create Next App",
-  description: "Generated by create next app",
+  title: "Focustella",
+  description: "Space-themed focus timer",
 };

 export default function RootLayout({
@@ -23,11 +13,23 @@ export default function RootLayout({
  children: React.ReactNode;
 }>) {
  return (
-    <html lang="en">
-      <body
-        className={`${geistSans.variable} ${geistMono.variable} antialiased`}
-      >
-        {children}
+    <html lang="ko" className="dark">
+      <body className="bg-slate-950 text-slate-100 min-h-screen font-sans selection:bg-indigo-500/30 overflow-x-hidden">
+        {/* Layout Container */}
+        <div className="relative z-10 min-h-screen flex flex-col max-w-6xl mx-auto">
+          <header className="flex items-center justify-between px-6 py-4">
+            <Link href="/" className="font-bold text-lg tracking-wider text-indigo-400 hover:text-indigo-300 transition-colors z-50">
+              FOCUSTELLA
+            </Link>
+            <nav className="flex gap-4 text-sm font-medium text-slate-400 z-50">
+              <Link href="/log" className="hover:text-slate-200 transition-colors">항해일지</Link>
+              <Link href="/settings" className="hover:text-slate-200 transition-colors">설정</Link>
+            </nav>
+          </header>
+          <main className="flex-1 relative flex flex-col w-full">
+            {children}
+          </main>
+        </div>
      </body>
    </html>
  );
--- a/src/app/log/[id]/page.tsx
+++ b/src/app/log/[id]/page.tsx
@@ -0,0 +1,68 @@
+'use client';
+
+import { useEffect, useState, use } from 'react';
+import { useRouter } from 'next/navigation';
+import Link from 'next/link';
+import { getHistory } from '@/lib/store';
+import { Voyage } from '@/types';
+
+export default function LogDetailPage({ params }: { params: Promise<{ id: string }> }) {
+  // Next.js 15: params is a Promise
+  const resolvedParams = use(params);
+  const router = useRouter();
+  const [log, setLog] = useState<Voyage | null>(null);
+
+  useEffect(() => {
+    const history = getHistory();
+    const found = history.find(item => item.id === resolvedParams.id);
+    if (found) setLog(found);
+  }, [resolvedParams.id]);
+
+  if (!log) return <div className="p-6 text-slate-500">Loading or Not Found...</div>;
+
+  return (
+    <div className="flex flex-col flex-1 p-6 space-y-8 animate-in fade-in duration-300">
+      <header className="border-b border-slate-800 pb-4">
+        <Link href="/log" className="text-sm text-indigo-400 hover:text-indigo-300 mb-4 inline-block">&larr; 목록으로</Link>
+        <h1 className="text-2xl font-bold text-white">{log.missionText}</h1>
+        <div className="flex gap-3 mt-2 text-sm text-slate-500">
+          <span>{new Date(log.startedAt).toLocaleString()}</span>
+          <span>•</span>
+          <span>{log.routeName} ({log.durationMinutes}m)</span>
+        </div>
+      </header>
+
+      <div className="space-y-6">
+        <div className="bg-slate-900/30 p-4 rounded-lg border border-slate-800/50">
+          <h3 className="text-xs font-bold text-slate-500 uppercase tracking-wider mb-2">결과 상태</h3>
+          <p className="text-lg text-indigo-100">
+            {log.status === 'completed' && '✅ 계획대로'}
+            {log.status === 'partial' && '🌓 부분 진행'}
+            {log.status === 'reoriented' && '🧭 방향 재설정'}
+            {log.status === 'aborted' && '🚨 조기 귀환'}
+            {log.status === 'in_progress' && '진행 중'}
+          </p>
+        </div>
+
+        <div className="grid gap-6 sm:grid-cols-2">
+          <div>
+            <h3 className="text-xs font-bold text-slate-500 uppercase tracking-wider mb-2">확보한 것</h3>
+            <p className="text-slate-300 leading-relaxed bg-slate-900/20 p-3 rounded">{log.debriefProgress || '-'}</p>
+          </div>
+          
+          <div>
+            <h3 className="text-xs font-bold text-slate-500 uppercase tracking-wider mb-2">다음 행동</h3>
+            <p className="text-slate-300 leading-relaxed bg-slate-900/20 p-3 rounded">{log.nextAction || '-'}</p>
+          </div>
+        </div>
+
+        {log.notes && (
+          <div>
+            <h3 className="text-xs font-bold text-slate-500 uppercase tracking-wider mb-2">초기 메모</h3>
+            <p className="text-slate-400 text-sm italic">"{log.notes}"</p>
+          </div>
+        )}
+      </div>
+    </div>
+  );
+}
--- a/src/app/log/page.tsx
+++ b/src/app/log/page.tsx
@@ -0,0 +1,62 @@
+'use client';
+
+import { useEffect, useState } from 'react';
+import Link from 'next/link';
+import { getHistory } from '@/lib/store';
+import { Voyage, VoyageStatus } from '@/types';
+
+export default function LogListPage() {
+  const [logs, setLogs] = useState<Voyage[]>([]);
+
+  useEffect(() => {
+    setLogs(getHistory());
+  }, []);
+
+  const getStatusLabel = (s: VoyageStatus) => {
+    switch(s) {
+      case 'completed': return '✅ 계획대로';
+      case 'partial': return '🌓 부분 진행';
+      case 'reoriented': return '🧭 방향 재설정';
+      case 'aborted': return '🚨 조기 귀환';
+      default: return '진행 중';
+    }
+  };
+
+  return (
+    <div className="flex flex-col flex-1 p-6">
+      <h1 className="text-xl font-bold text-slate-100 mb-6">나의 항해 기록</h1>
+
+      {logs.length === 0 ? (
+        <div className="flex flex-col items-center justify-center flex-1 py-20 text-slate-500 border border-dashed border-slate-800 rounded-xl">
+          <p className="mb-4">아직 기록된 항해가 없습니다.</p>
+          <Link href="/" className="text-indigo-400 hover:text-indigo-300 underline">
+            첫 항해 떠나기
+          </Link>
+        </div>
+      ) : (
+        <div className="grid gap-3">
+          {logs.map((log) => (
+            <Link 
+              key={log.id} 
+              href={`/log/${log.id}`}
+              className="block bg-slate-900/50 border border-slate-800 hover:border-slate-600 rounded-lg p-4 transition-colors"
+            >
+              <div className="flex justify-between items-start mb-1">
+                <span className="text-xs text-slate-500">
+                  {new Date(log.startedAt).toLocaleDateString()}
+                </span>
+                <span className="text-xs font-medium text-slate-400 bg-slate-800 px-1.5 py-0.5 rounded">
+                  {getStatusLabel(log.status)}
+                </span>
+              </div>
+              <h3 className="font-semibold text-slate-200 truncate mb-1">
+                {log.missionText}
+              </h3>
+              <p className="text-xs text-slate-500">{log.routeName} · {log.durationMinutes}min</p>
+            </Link>
+          ))}
+        </div>
+      )}
+    </div>
+  );
+}
--- a/src/app/page.tsx
+++ b/src/app/page.tsx
@@ -1,266 +1,372 @@
-// app/page.tsx
 "use client";

+import { ROUTES } from "@/lib/constants";
+import { getCurrentVoyage } from "@/lib/store";
+import { Route } from "@/types";
+import Link from "next/link";
 import { useRouter } from "next/navigation";
-import { useCallback, useMemo, useState } from "react";
+import { CSSProperties, useEffect } from "react";

-import { Button } from "@/components/ui/button";
-import { Card } from "@/components/ui/card";
-import {
-  Dialog,
-  DialogContent,
-  DialogFooter,
-  DialogHeader,
-  DialogTitle,
-} from "@/components/ui/dialog";
-import { Input } from "@/components/ui/input";
-import { Separator } from "@/components/ui/separator";
+type Star = {
+  cx: number;
+  cy: number;
+  r: number;
+  armScale?: number;
+};

-type Mode = "freeflow" | "sprint" | "deepwork";
+type Segment = {
+  x1: number;
+  y1: number;
+  x2: number;
+  y2: number;
+};

-const PRIMARY = "#2F6FED";
-const PRIMARY_HOVER = "#295FD1";
+type Constellation = {
+  key: "orion" | "auriga" | "ursaMajor";
+  className: string;
+  viewBox: string;
+  colorClass: string;
+  stars: Star[];
+  segments: Segment[];
+};

-function modeLabel(mode: Mode) {
-  switch (mode) {
-    case "freeflow":
-      return "프리플로우";
-    case "sprint":
-      return "스프린트";
-    case "deepwork":
-      return "딥워크";
-  }
+const CONSTELLATIONS: Constellation[] = [
+  {
+    key: "orion",
+    className: "absolute bottom-10 left-5 w-72 h-72 opacity-30",
+    viewBox: "0 0 100 100",
+    colorClass: "text-indigo-200",
+    stars: [
+      { cx: 25, cy: 15, r: 0.82 },
+      { cx: 75, cy: 25, r: 0.96, armScale: 1.08 },
+      { cx: 45, cy: 48, r: 0.58 },
+      { cx: 50, cy: 50, r: 0.54 },
+      { cx: 55, cy: 52, r: 0.6 },
+      { cx: 30, cy: 85, r: 0.86 },
+      { cx: 70, cy: 80, r: 0.98, armScale: 1.08 },
+    ],
+    segments: [
+      { x1: 25, y1: 15, x2: 45, y2: 48 },
+      { x1: 75, y1: 25, x2: 55, y2: 52 },
+      { x1: 45, y1: 48, x2: 30, y2: 85 },
+      { x1: 55, y1: 52, x2: 70, y2: 80 },
+    ],
+  },
+  {
+    key: "auriga",
+    className: "absolute top-10 right-10 w-64 h-64 opacity-25",
+    viewBox: "0 0 100 100",
+    colorClass: "text-blue-200",
+    stars: [
+      { cx: 50, cy: 15, r: 1.06, armScale: 1.1 },
+      { cx: 20, cy: 35, r: 0.67 },
+      { cx: 25, cy: 75, r: 0.65 },
+      { cx: 75, cy: 75, r: 0.66 },
+      { cx: 85, cy: 35, r: 0.76 },
+    ],
+    segments: [
+      { x1: 50, y1: 15, x2: 20, y2: 35 },
+      { x1: 20, y1: 35, x2: 25, y2: 75 },
+      { x1: 25, y1: 75, x2: 75, y2: 75 },
+      { x1: 75, y1: 75, x2: 85, y2: 35 },
+      { x1: 85, y1: 35, x2: 50, y2: 15 },
+    ],
+  },
+  {
+    key: "ursaMajor",
+    className: "absolute top-20 left-10 w-80 h-48 opacity-25",
+    viewBox: "0 0 100 60",
+    colorClass: "text-slate-200",
+    stars: [
+      { cx: 10, cy: 20, r: 0.64 },
+      { cx: 25, cy: 25, r: 0.67 },
+      { cx: 40, cy: 35, r: 0.69 },
+      { cx: 55, cy: 45, r: 0.99 },
+      { cx: 75, cy: 45, r: 0.98 },
+      { cx: 80, cy: 15, r: 0.93 },
+      { cx: 60, cy: 10, r: 0.96 },
+    ],
+    segments: [
+      { x1: 10, y1: 20, x2: 25, y2: 25 },
+      { x1: 25, y1: 25, x2: 40, y2: 35 },
+      { x1: 40, y1: 35, x2: 55, y2: 45 },
+      { x1: 55, y1: 45, x2: 75, y2: 45 },
+      { x1: 75, y1: 45, x2: 80, y2: 15 },
+      { x1: 80, y1: 15, x2: 60, y2: 10 },
+      { x1: 60, y1: 10, x2: 55, y2: 45 },
+    ],
+  },
+];
+
+const STAR_STYLES = [
+  { duration: 2.3, delay: 0.1 },
+  { duration: 3.1, delay: 1.2 },
+  { duration: 4.8, delay: 0.8 },
+  { duration: 2.7, delay: 2.1 },
+  { duration: 5.2, delay: 1.7 },
+  { duration: 3.9, delay: 0.4 },
+  { duration: 4.4, delay: 2.6 },
+  { duration: 2.1, delay: 1.3 },
+  { duration: 5.8, delay: 0.2 },
+  { duration: 3.3, delay: 2.4 },
+  { duration: 4.0, delay: 1.1 },
+  { duration: 2.9, delay: 1.9 },
+] as const;
+
+function StarGlint({ starIndex, star }: { starIndex: number; star: Star }) {
+  const timing = STAR_STYLES[starIndex % STAR_STYLES.length];
+  const strengthTier =
+    star.r >= 0.95 ? "bright" : star.r >= 0.72 ? "mid" : "faint";
+  const glintPeak =
+    strengthTier === "bright" ? 0.7 : strengthTier === "mid" ? 0.61 : 0.52;
+  const bloomPeak =
+    strengthTier === "bright" ? 0.16 : strengthTier === "mid" ? 0.12 : 0.08;
+  const coreLow =
+    strengthTier === "bright" ? 0.9 : strengthTier === "mid" ? 0.73 : 0.6;
+  const coreHigh =
+    strengthTier === "bright" ? 1 : strengthTier === "mid" ? 0.9 : 0.82;
+  const coreReduced =
+    strengthTier === "bright" ? 0.9 : strengthTier === "mid" ? 0.76 : 0.66;
+  const coreStyle = {
+    animationDuration: `${timing.duration}s`,
+    animationDelay: `${timing.delay}s`,
+    "--core-low": `${coreLow}`,
+    "--core-high": `${coreHigh}`,
+    "--core-reduced": `${coreReduced}`,
+  } as CSSProperties;
+  const glintStyle = {
+    animationDuration: `${timing.duration}s`,
+    animationDelay: `${timing.delay + 0.12}s`,
+    "--glint-peak": `${glintPeak}`,
+    "--glint-base": "0.02",
+    "--bloom-peak": `${bloomPeak}`,
+    "--bloom-base": "0.01",
+  } as CSSProperties;
+  const glintLength = star.r * 4.4 * (star.armScale ?? 1);
+  const gradientXId = `glint-x-${starIndex}`;
+  const gradientYId = `glint-y-${starIndex}`;
+
+  return (
+    <g>
+      <defs>
+        <linearGradient
+          id={gradientXId}
+          x1={star.cx - glintLength}
+          y1={star.cy}
+          x2={star.cx + glintLength}
+          y2={star.cy}
+          gradientUnits="userSpaceOnUse"
+        >
+          <stop offset="0%" stopColor="currentColor" stopOpacity="0" />
+          <stop offset="50%" stopColor="currentColor" stopOpacity="1" />
+          <stop offset="100%" stopColor="currentColor" stopOpacity="0" />
+        </linearGradient>
+        <linearGradient
+          id={gradientYId}
+          x1={star.cx}
+          y1={star.cy - glintLength}
+          x2={star.cx}
+          y2={star.cy + glintLength}
+          gradientUnits="userSpaceOnUse"
+        >
+          <stop offset="0%" stopColor="currentColor" stopOpacity="0" />
+          <stop offset="50%" stopColor="currentColor" stopOpacity="1" />
+          <stop offset="100%" stopColor="currentColor" stopOpacity="0" />
+        </linearGradient>
+      </defs>
+
+      <circle
+        cx={star.cx}
+        cy={star.cy}
+        r={star.r}
+        className="star-core"
+        style={coreStyle}
+      />
+      <circle
+        cx={star.cx}
+        cy={star.cy}
+        r={star.r * 1.9}
+        className="star-core-bloom"
+        style={coreStyle}
+      />
+
+      <line
+        x1={star.cx - glintLength}
+        y1={star.cy}
+        x2={star.cx + glintLength}
+        y2={star.cy}
+        className="star-glint-bloom"
+        stroke={`url(#${gradientXId})`}
+        style={glintStyle}
+      />
+      <line
+        x1={star.cx}
+        y1={star.cy - glintLength}
+        x2={star.cx}
+        y2={star.cy + glintLength}
+        className="star-glint-bloom"
+        stroke={`url(#${gradientYId})`}
+        style={glintStyle}
+      />
+      <line
+        x1={star.cx - glintLength}
+        y1={star.cy}
+        x2={star.cx + glintLength}
+        y2={star.cy}
+        className="star-glint"
+        stroke={`url(#${gradientXId})`}
+        style={glintStyle}
+      />
+      <line
+        x1={star.cx}
+        y1={star.cy - glintLength}
+        x2={star.cx}
+        y2={star.cy + glintLength}
+        className="star-glint"
+        stroke={`url(#${gradientYId})`}
+        style={glintStyle}
+      />
+    </g>
+  );
 }

-function modeMeta(mode: Mode) {
-  if (mode === "freeflow") return "무제한";
-  if (mode === "sprint") return "25분";
-  return "90분";
+function LobbyBackground() {
+  return (
+    <div className="fixed inset-0 z-0 overflow-hidden pointer-events-none bg-[radial-gradient(ellipse_at_center,_var(--tw-gradient-stops))] from-slate-900 via-slate-950 to-black">
+      {CONSTELLATIONS.map((constellation, constellationIndex) => (
+        <div key={constellation.key} className={constellation.className}>
+          <svg
+            viewBox={constellation.viewBox}
+            className={`w-full h-full fill-current ${constellation.colorClass}`}
+          >
+            {constellation.segments.map((segment, segmentIndex) => (
+              <line
+                key={`${constellation.key}-segment-${segmentIndex}`}
+                x1={segment.x1}
+                y1={segment.y1}
+                x2={segment.x2}
+                y2={segment.y2}
+                stroke="currentColor"
+                strokeWidth="0.2"
+                className="opacity-20"
+              />
+            ))}
+
+            {constellation.stars.map((star, starIndex) => {
+              const globalStarIndex =
+                CONSTELLATIONS.slice(0, constellationIndex).reduce(
+                  (sum, item) => sum + item.stars.length,
+                  0,
+                ) + starIndex;
+
+              return (
+                <StarGlint
+                  key={`${constellation.key}-star-${globalStarIndex}`}
+                  starIndex={globalStarIndex}
+                  star={star}
+                />
+              );
+            })}
+          </svg>
+        </div>
+      ))}
+    </div>
+  );
 }

-function startLabel(mode: Mode) {
-  if (mode === "freeflow") return "집중 시작";
-  return `집중 시작 (${modeMeta(mode)})`;
+function RouteCard({
+  route,
+  isCTA = false,
+}: {
+  route: Route;
+  isCTA?: boolean;
+}) {
+  return (
+    <div
+      className={`group relative bg-slate-900/60 backdrop-blur-md hover:bg-slate-800/80 border border-slate-800 hover:border-indigo-500/50 rounded-2xl p-6 transition-all duration-300 flex flex-col h-full shadow-lg hover:shadow-indigo-900/20 ${isCTA ? "min-h-[200px] justify-center items-center text-center" : ""}`}
+    >
+      <div
+        className={`flex w-full relative z-10 ${isCTA ? "flex-col items-center gap-4" : "justify-between items-start mb-4"}`}
+      >
+        <div className={isCTA ? "flex flex-col items-center" : ""}>
+          <h3
+            className={`font-bold text-indigo-100 group-hover:text-white transition-colors ${isCTA ? "text-3xl" : "text-xl"}`}
+          >
+            {route.name}
+          </h3>
+          <span className="text-xs font-medium text-slate-400 bg-slate-950/50 px-2 py-0.5 rounded-full border border-slate-800 mt-2 inline-block">
+            {route.tag}
+          </span>
+        </div>
+        <span
+          className={`font-light text-slate-300 group-hover:text-white transition-colors ${isCTA ? "text-4xl mt-2" : "text-3xl"}`}
+        >
+          {route.durationMinutes === 0 ? "∞" : route.durationMinutes}
+          <span className="text-sm ml-1 text-slate-500">
+            {route.durationMinutes === 0 ? "" : "min"}
+          </span>
+        </span>
+      </div>
+
+      {!isCTA && (
+        <p className="text-sm text-slate-400 mb-8 flex-1 leading-relaxed relative z-10 text-left w-full">
+          {route.description}
+        </p>
+      )}
+
+      {isCTA && (
+        <p className="text-base text-slate-400 mb-6 relative z-10 max-w-lg">
+          {route.description}
+        </p>
+      )}
+
+      <Link
+        href={`/boarding?routeId=${route.id}`}
+        className={`flex items-center justify-center bg-indigo-600 hover:bg-indigo-500 text-white font-bold rounded-xl transition-all shadow-lg shadow-indigo-900/30 active:scale-[0.98] relative z-10 ${isCTA ? "w-full max-w-md py-4 text-lg" : "w-full py-4"}`}
+      >
+        {isCTA ? "정거장 진입 (대기)" : "바로 출항"}
+      </Link>
+    </div>
+  );
 }

-export default function HomePage() {
+export default function Home() {
  const router = useRouter();

-  const [open, setOpen] = useState(false);
-  const [mode, setMode] = useState<Mode | null>(null);
-  const [goal, setGoal] = useState("");
+  useEffect(() => {
+    const current = getCurrentVoyage();
+    if (current && current.status === "in_progress") {
+      router.replace("/flight");
+    }
+  }, [router]);

-  const meta = useMemo(() => (mode ? modeMeta(mode) : ""), [mode]);
-
-  const go = useCallback(
-    (m: Mode, g?: string) => {
-      const params = new URLSearchParams();
-      params.set("mode", m);
-
-      if (g && g.trim())
-        localStorage.setItem("hushroom:session-goal", g.trim());
-      else localStorage.removeItem("hushroom:session-goal");
-
-      // nextAction은 사용하지 않음
-      localStorage.removeItem("hushroom:session-nextAction");
-
-      localStorage.setItem("hushroom:last-mode", m);
-      router.push(`/session?${params.toString()}`);
-    },
-    [router],
-  );
-
-  const openDialog = (m: Mode) => {
-    setMode(m);
-    setGoal("");
-    setOpen(true);
-  };
-
-  const start = () => {
-    if (!mode) return;
-    setOpen(false);
-    go(mode, goal);
-  };
+  const stationRoute = ROUTES[0];
+  const normalRoutes = ROUTES.slice(1);

  return (
-    <main className="min-h-screen w-full bg-[#E9EEF6]">
-      <header className="px-5 pt-6">
-        <div className="select-none text-xl font-bold tracking-tight leading-none text-slate-800">
-          hushroom
-        </div>
-        <div className="mt-2 text-sm font-semibold text-slate-600">
-          딱 한 가지 목표. 바로 시작.
-        </div>
-      </header>
+    <div className="flex flex-col flex-1 relative animate-in fade-in duration-500">
+      <LobbyBackground />

-      <section className="mx-auto flex min-h-[calc(100vh-64px)] max-w-lg flex-col justify-center px-5 pb-10">
-        {/* ✅ 파란 CTA = 프리플로우 */}
-        <div className="mb-4">
-          <div className="text-sm font-semibold text-slate-600">자유 세션</div>
-          <div className="mt-1 text-base leading-relaxed text-slate-700">
-            시간 제한 없이, 원할 때 종료 (60분마다 가볍게 노크)
-          </div>
+      <div className="relative z-10 flex flex-col items-center justify-center min-h-[calc(100vh-80px)] p-6 md:p-12">
+        <div className="space-y-4 text-center mb-12 max-w-2xl mx-auto backdrop-blur-sm bg-slate-950/30 p-6 rounded-3xl border border-slate-800/30">
+          <h1 className="text-3xl md:text-5xl font-bold text-slate-100 tracking-tight">
+            어느 별자리로 출항할까요?
+          </h1>
+          <p className="text-slate-300 text-lg">몰입하기 좋은 궤도입니다.</p>
        </div>

-        <Button
-          type="button"
-          onClick={() => openDialog("freeflow")}
-          className="h-auto w-full items-start justify-start whitespace-normal rounded-3xl bg-[#2F6FED]
-                     px-8 py-6 text-left text-white shadow-sm transition active:scale-[0.99] hover:bg-[#295FD1]"
-        >
+        <div className="flex flex-col gap-6 w-full max-w-4xl mx-auto">
          <div className="w-full">
-            <div className="text-2xl font-semibold leading-none">
-              프리플로우
-            </div>
-            <div className="mt-2 text-lg opacity-90">무제한</div>
+            <RouteCard route={stationRoute} isCTA={true} />
          </div>
-        </Button>

-        <div className="my-8 flex items-center gap-3">
-          <Separator className="flex-1 bg-[#D7E0EE]" />
-          <div className="text-sm font-semibold text-slate-600">몰입 블록</div>
-          <Separator className="flex-1 bg-[#D7E0EE]" />
-        </div>
-
-        {/* ✅ 버튼 위에 설명 (버튼 안에 설명 X) */}
-        <div className="-mt-2 mb-5">
-          <div className="text-sm font-semibold text-slate-600">
-            시간 고정 세션
-          </div>
-          <div className="mt-1 text-base leading-relaxed text-slate-700">
-            한 번 실행되고 끝나면 요약으로 이동
+          <div className="grid grid-cols-1 md:grid-cols-2 gap-6 w-full">
+            {normalRoutes.map((route) => (
+              <RouteCard key={route.id} route={route} />
+            ))}
          </div>
        </div>
-
-        {/* ✅ row(2열) */}
-        <div className="grid grid-cols-2 gap-4">
-          <ModeTile
-            title="스프린트"
-            meta="25분"
-            onClick={() => openDialog("sprint")}
-          />
-          <ModeTile
-            title="딥워크"
-            meta="90분"
-            onClick={() => openDialog("deepwork")}
-          />
-        </div>
-      </section>
-
-      <SessionGoalDialog
-        open={open}
-        onOpenChange={setOpen}
-        mode={mode}
-        meta={meta}
-        goal={goal}
-        setGoal={setGoal}
-        onStart={start}
-      />
-    </main>
-  );
-}
-
-function ModeTile({
-  title,
-  meta,
-  onClick,
-}: {
-  title: string;
-  meta: string;
-  onClick: () => void;
-}) {
-  return (
-    <Card className="rounded-3xl border border-[#C9D7F5] bg-white shadow-sm transition hover:bg-[#F1F5FF]">
-      <Button
-        type="button"
-        variant="ghost"
-        onClick={onClick}
-        className="h-auto w-full rounded-3xl px-7 py-5 text-left active:scale-[0.99] hover:bg-transparent"
-      >
-        <div className="flex w-full items-baseline justify-between">
-          <div className="text-xl font-semibold text-slate-900">{title}</div>
-          <div className="text-lg font-semibold text-blue-700">{meta}</div>
-        </div>
-      </Button>
-    </Card>
-  );
-}
-
-function SessionGoalDialog({
-  open,
-  onOpenChange,
-  mode,
-  meta,
-  goal,
-  setGoal,
-  onStart,
-}: {
-  open: boolean;
-  onOpenChange: (v: boolean) => void;
-  mode: Mode | null;
-  meta: string;
-  goal: string;
-  setGoal: (v: string) => void;
-  onStart: () => void;
-}) {
-  const title = mode ? `${modeLabel(mode)} · ${meta}` : "세션";
-
-  return (
-    <Dialog open={open} onOpenChange={onOpenChange}>
-      <DialogContent className="sm:max-w-md rounded-2xl">
-        <form
-          onSubmit={(e) => {
-            e.preventDefault();
-            onStart();
-          }}
-        >
-          <DialogHeader>
-            <DialogTitle className="text-xl">세션 목표 설정</DialogTitle>
-            <div className="text-sm text-slate-600">{title}</div>
-          </DialogHeader>
-
-          <div className="mt-4 space-y-2">
-            <Input
-              value={goal}
-              onChange={(e) => setGoal(e.target.value)}
-              placeholder="지금 할 한 가지를 한 줄로 적어주세요 (선택)"
-              className="text-lg focus-visible:ring-2"
-              autoFocus
-              onKeyDown={(e) => {
-                if (e.key === "Enter" && (e.nativeEvent as any).isComposing) {
-                  e.preventDefault();
-                }
-              }}
-            />
-            <div className="text-xs text-slate-500">
-              짧게 적을수록 좋아요. 끝이 보이게.
-            </div>
-          </div>
-
-          <DialogFooter className="mt-6 gap-2 sm:gap-2">
-            <Button
-              type="button"
-              variant="ghost"
-              onClick={() => onOpenChange(false)}
-            >
-              취소
-            </Button>
-            <Button
-              type="submit"
-              className="rounded-xl"
-              style={{ backgroundColor: PRIMARY }}
-              onMouseEnter={(e) =>
-                (e.currentTarget.style.backgroundColor = PRIMARY_HOVER)
-              }
-              onMouseLeave={(e) =>
-                (e.currentTarget.style.backgroundColor = PRIMARY)
-              }
-            >
-              {mode ? startLabel(mode) : "집중 시작"}
-            </Button>
-          </DialogFooter>
-        </form>
-      </DialogContent>
-    </Dialog>
+      </div>
+    </div>
  );
 }
--- a/src/app/session/end/page.tsx
+++ b/src/app/session/end/page.tsx
@@ -62,7 +62,7 @@ function SessionEndInner() {
    <main className="min-h-screen w-full" style={{ backgroundColor: BG }}>
      <header className="px-5 pt-6">
        <div className="select-none text-xl font-bold tracking-tight leading-none text-slate-800">
-          hushroom
+          QuietSprint
        </div>
      </header>

--- a/src/app/session/layout.tsx
+++ b/src/app/session/layout.tsx
@@ -0,0 +1,15 @@
+// app/session/layout.tsx
+import type { Metadata } from "next";
+
+export const metadata: Metadata = {
+  title: "Session",
+  description: "Focus session in progress.",
+};
+
+export default function SessionLayout({
+  children,
+}: {
+  children: React.ReactNode;
+}) {
+  return <>{children}</>;
+}
--- a/src/app/session/page.tsx
+++ b/src/app/session/page.tsx
@@ -270,12 +270,12 @@ function SessionInner() {
  const [goal, setGoal] = useState("");
  const [nextAction, setNextAction] = useState("");

-  // ✅ startedAt/now 기반 시간
+  // startedAt/now 기반 시간
  const [startedAt, setStartedAt] = useState<number>(() => Date.now());
  const [now, setNow] = useState<number>(() => Date.now());
  const endedRef = useRef(false);

-  // ✅ away: 누적 ms + (현재 away면 now-startedAt)
+  // away: 누적 ms + (현재 away면 now-startedAt)
  const [isAway, setIsAway] = useState(false);
  const awayTotalMsRef = useRef(0);
  const awayStartedAtRef = useRef<number | null>(null);
@@ -435,7 +435,7 @@ function SessionInner() {
    return formatHHMMSS(remaining);
  }, [elapsed, remaining, mode]);

-  // ✅ 타임아웃 종료(점프 포함)
+  // 타임아웃 종료(점프 포함)
  useEffect(() => {
    if (!duration) return;
    if (endedRef.current) return;
--- a/src/app/settings/page.tsx
+++ b/src/app/settings/page.tsx
@@ -0,0 +1,40 @@
+'use client';
+
+import { useEffect, useState } from 'react';
+import { getPreferences, savePreferences } from '@/lib/store';
+
+export default function SettingsPage() {
+  const [hideSeconds, setHideSeconds] = useState(false);
+
+  useEffect(() => {
+    const prefs = getPreferences();
+    setHideSeconds(prefs.hideSeconds);
+  }, []);
+
+  const handleToggle = () => {
+    const newValue = !hideSeconds;
+    setHideSeconds(newValue);
+    savePreferences({ hideSeconds: newValue });
+  };
+
+  return (
+    <div className="p-6">
+      <h1 className="text-xl font-bold text-slate-100 mb-8">설정</h1>
+      
+      <div className="space-y-6">
+        <div className="flex items-center justify-between bg-slate-900/40 p-4 rounded-xl border border-slate-800">
+          <div>
+            <h3 className="font-medium text-slate-200">초 단위 숨기기</h3>
+            <p className="text-xs text-slate-500">타이머에서 분 단위만 표시하여 불안감을 줄입니다.</p>
+          </div>
+          <button 
+            onClick={handleToggle}
+            className={`w-12 h-6 rounded-full transition-colors relative ${hideSeconds ? 'bg-indigo-600' : 'bg-slate-700'}`}
+          >
+            <div className={`absolute top-1 w-4 h-4 rounded-full bg-white transition-transform ${hideSeconds ? 'left-7' : 'left-1'}`} />
+          </button>
+        </div>
+      </div>
+    </div>
+  );
+}
--- a/src/components/FlightBackground.tsx
+++ b/src/components/FlightBackground.tsx
@@ -0,0 +1,312 @@
+'use client';
+
+import { useEffect, useRef } from 'react';
+
+type FlightBackgroundProps = {
+  vanishYOffset?: number;
+  centerProtectRadius?: number;
+};
+
+type Star = {
+  wx: number;
+  wy: number;
+  z: number;
+  speed: number;
+  radius: number;
+  alpha: number;
+  tailLength: number;
+};
+
+const clamp = (value: number, min: number, max: number) =>
+  Math.min(max, Math.max(min, value));
+
+const randomInRange = (min: number, max: number) =>
+  min + Math.random() * (max - min);
+
+export default function FlightBackground({
+  vanishYOffset = -64,
+  centerProtectRadius = 190,
+}: FlightBackgroundProps) {
+  const canvasRef = useRef<HTMLCanvasElement>(null);
+
+  useEffect(() => {
+    const canvas = canvasRef.current;
+    if (!canvas) return;
+
+    const ctx = canvas.getContext('2d');
+    if (!ctx) return;
+
+    let width = window.innerWidth;
+    let height = window.innerHeight;
+    let animationFrameId = 0;
+
+    const motionQuery = window.matchMedia('(prefers-reduced-motion: reduce)');
+    let prefersReduced = motionQuery.matches;
+
+    const vanishXJitter = (Math.random() < 0.5 ? -1 : 1) * randomInRange(10, 25);
+
+    const setSize = () => {
+      width = window.innerWidth;
+      height = window.innerHeight;
+      canvas.width = width;
+      canvas.height = height;
+    };
+
+    const getStarCount = () => {
+      const isMobile = width < 768;
+      const min = isMobile ? 12 : 18;
+      const max = isMobile ? 30 : 45;
+      const byArea = Math.round((width * height) / 42000);
+      return clamp(byArea, min, max);
+    };
+
+    const getVanishingPoint = () => ({
+      x: width / 2 + vanishXJitter,
+      y: height / 2 + vanishYOffset,
+    });
+
+    const createSpeed = () => {
+      const tier = Math.random();
+
+      if (tier < 0.9) return randomInRange(0.003, 0.007);
+      if (tier < 0.99) return randomInRange(0.007, 0.011);
+      return randomInRange(0.011, 0.014);
+    };
+
+    const createVisuals = () => {
+      const highlight = Math.random() < 0.16;
+      const tailRoll = Math.random();
+      const tailLength =
+        tailRoll < 0.82
+          ? randomInRange(0, 2.5)
+          : tailRoll < 0.86
+            ? randomInRange(2.5, 3.8)
+            : randomInRange(4, 10);
+
+      return {
+        radius: highlight ? randomInRange(1.2, 1.8) : randomInRange(0.7, 1.2),
+        alpha: highlight ? randomInRange(0.55, 0.85) : randomInRange(0.25, 0.55),
+        tailLength,
+      };
+    };
+
+    const createSpawnRadius = () => {
+      const roll = Math.random();
+      const maxWideRadius = Math.min(Math.max(width, height) * 0.7, 360);
+      const ringOuter = Math.min(320, maxWideRadius);
+
+      if (roll < 0.08) {
+        return randomInRange(0, 60);
+      }
+
+      if (roll < 0.8) {
+        return randomInRange(80, Math.max(80, ringOuter));
+      }
+
+      return randomInRange(120, Math.max(120, maxWideRadius));
+    };
+
+    const createStar = (isRespawn: boolean): Star => {
+      const radius = createSpawnRadius();
+      const angle = randomInRange(0, Math.PI * 2);
+      const visuals = createVisuals();
+
+      return {
+        wx: Math.cos(angle) * radius,
+        wy: Math.sin(angle) * radius,
+        z: isRespawn ? randomInRange(0.9, 1.55) : randomInRange(0.55, 1.6),
+        speed: createSpeed(),
+        radius: visuals.radius,
+        alpha: visuals.alpha,
+        tailLength: visuals.tailLength,
+      };
+    };
+
+    setSize();
+    let stars: Star[] = Array.from({ length: getStarCount() }, () => createStar(false));
+
+    const screenDistanceFromCenter = (x: number, y: number) => {
+      const cx = width / 2;
+      const cy = height / 2;
+      return Math.hypot(x - cx, y - cy);
+    };
+
+    const applyCenterProtection = (x: number, y: number, alpha: number) => {
+      const distance = screenDistanceFromCenter(x, y);
+
+      if (distance >= centerProtectRadius) return alpha;
+
+      const ratio = clamp(distance / centerProtectRadius, 0, 1);
+      const attenuation = 0.35 + ratio * 0.65;
+      return alpha * attenuation;
+    };
+
+    const project = (star: Star, zValue: number) => {
+      const vp = getVanishingPoint();
+      return {
+        x: vp.x + star.wx / zValue,
+        y: vp.y + star.wy / zValue,
+      };
+    };
+
+    const recycleStar = (index: number) => {
+      stars[index] = createStar(true);
+    };
+
+    const drawStar = (
+      star: Star,
+      fromX: number,
+      fromY: number,
+      toX: number,
+      toY: number,
+    ) => {
+      const visibleAlpha = applyCenterProtection(toX, toY, star.alpha);
+      const dx = toX - fromX;
+      const dy = toY - fromY;
+      const movementLength = Math.hypot(dx, dy);
+
+      if (star.tailLength < 1 || movementLength < 0.001) {
+        ctx.globalAlpha = visibleAlpha;
+        ctx.fillStyle = '#f8fbff';
+        ctx.beginPath();
+        ctx.arc(toX, toY, star.radius, 0, Math.PI * 2);
+        ctx.fill();
+        ctx.globalAlpha = 1;
+        return;
+      }
+
+      const dirX = dx / movementLength;
+      const dirY = dy / movementLength;
+      const tailX = toX - dirX * star.tailLength;
+      const tailY = toY - dirY * star.tailLength;
+
+      const gradient = ctx.createLinearGradient(tailX, tailY, toX, toY);
+      gradient.addColorStop(0, 'rgba(248, 251, 255, 0)');
+      gradient.addColorStop(1, `rgba(248, 251, 255, ${visibleAlpha})`);
+
+      ctx.strokeStyle = gradient;
+      ctx.lineWidth = clamp(star.radius * 0.9, 0.65, 1.6);
+      ctx.beginPath();
+      ctx.moveTo(tailX, tailY);
+      ctx.lineTo(toX, toY);
+      ctx.stroke();
+
+      ctx.globalAlpha = Math.min(1, visibleAlpha + 0.08);
+      ctx.fillStyle = '#f8fbff';
+      ctx.beginPath();
+      ctx.arc(toX, toY, clamp(star.radius * 0.72, 0.6, 1.45), 0, Math.PI * 2);
+      ctx.fill();
+      ctx.globalAlpha = 1;
+    };
+
+    const drawCenterVeil = () => {
+      const vp = getVanishingPoint();
+      const veil = ctx.createRadialGradient(
+        vp.x,
+        vp.y,
+        centerProtectRadius * 0.18,
+        vp.x,
+        vp.y,
+        centerProtectRadius * 1.35,
+      );
+      veil.addColorStop(0, 'rgba(160, 185, 235, 0.08)');
+      veil.addColorStop(0.55, 'rgba(90, 114, 170, 0.03)');
+      veil.addColorStop(1, 'rgba(0, 0, 0, 0)');
+
+      ctx.fillStyle = veil;
+      ctx.fillRect(0, 0, width, height);
+    };
+
+    const drawVignette = () => {
+      const vignette = ctx.createRadialGradient(
+        width / 2,
+        height / 2,
+        Math.min(width, height) * 0.25,
+        width / 2,
+        height / 2,
+        Math.max(width, height) * 0.95,
+      );
+      vignette.addColorStop(0, 'rgba(0, 0, 0, 0)');
+      vignette.addColorStop(1, 'rgba(0, 0, 0, 0.82)');
+      ctx.fillStyle = vignette;
+      ctx.fillRect(0, 0, width, height);
+    };
+
+    const drawFrame = (moveStars: boolean) => {
+      ctx.fillStyle = 'rgba(2, 5, 10, 0.3)';
+      ctx.fillRect(0, 0, width, height);
+
+      drawCenterVeil();
+
+      stars.forEach((star, index) => {
+        const from = project(star, star.z);
+
+        if (moveStars) {
+          star.z -= star.speed;
+        }
+
+        const to = project(star, star.z);
+
+        const outOfBounds =
+          to.x < -50 || to.x > width + 50 || to.y < -50 || to.y > height + 50;
+
+        if (star.z <= 0.22 || outOfBounds) {
+          recycleStar(index);
+          return;
+        }
+
+        drawStar(star, from.x, from.y, to.x, to.y);
+      });
+
+      drawVignette();
+    };
+
+    const render = () => {
+      drawFrame(true);
+      animationFrameId = requestAnimationFrame(render);
+    };
+
+    const renderStatic = () => {
+      ctx.clearRect(0, 0, width, height);
+      drawFrame(false);
+    };
+
+    const handleResize = () => {
+      setSize();
+      stars = Array.from({ length: getStarCount() }, () => createStar(false));
+
+      if (prefersReduced) {
+        renderStatic();
+      }
+    };
+
+    const handleMotionChange = (event: MediaQueryListEvent) => {
+      prefersReduced = event.matches;
+
+      if (prefersReduced) {
+        cancelAnimationFrame(animationFrameId);
+        renderStatic();
+        return;
+      }
+
+      render();
+    };
+
+    window.addEventListener('resize', handleResize);
+    motionQuery.addEventListener('change', handleMotionChange);
+
+    if (prefersReduced) {
+      renderStatic();
+    } else {
+      render();
+    }
+
+    return () => {
+      window.removeEventListener('resize', handleResize);
+      motionQuery.removeEventListener('change', handleMotionChange);
+      cancelAnimationFrame(animationFrameId);
+    };
+  }, [vanishYOffset, centerProtectRadius]);
+
+  return <canvas ref={canvasRef} className="fixed inset-0 z-0 pointer-events-none bg-black" />;
+}
--- a/src/components/LobbyBackground.tsx
+++ b/src/components/LobbyBackground.tsx
@@ -0,0 +1,332 @@
+"use client";
+
+import { useEffect, useState } from "react";
+
+export default function LobbyBackground() {
+  const [isMount, setIsMount] = useState(false);
+
+  useEffect(() => {
+    setIsMount(true);
+  }, []);
+
+  // Helper for random delay/duration style
+  const getRandomStyle = () => ({
+    animationDelay: `${Math.random() * 5}s`,
+    animationDuration: `${2 + Math.random() * 4}s`,
+  });
+
+  if (!isMount) return <div className="fixed inset-0 z-0 bg-black" />;
+
+  return (
+    <div className="fixed inset-0 z-0 overflow-hidden pointer-events-none bg-[radial-gradient(ellipse_at_center,_var(--tw-gradient-stops))] from-slate-900 via-slate-950 to-black">
+      {/* Orion - Bottom Left */}
+      <div className="absolute bottom-10 left-5 w-72 h-72 opacity-30 rotate-[-10deg]">
+        <svg
+          viewBox="0 0 100 100"
+          className="w-full h-full text-indigo-200 fill-current"
+        >
+          <circle
+            cx="250"
+            cy="15"
+            r="1.2"
+            className="animate-twinkle"
+            style={getRandomStyle()}
+          />
+          <circle
+            cx="75"
+            cy="25"
+            r="1.2"
+            className="animate-twinkle"
+            style={getRandomStyle()}
+          />
+          <circle
+            cx="45"
+            cy="48"
+            r="1"
+            className="animate-twinkle"
+            style={getRandomStyle()}
+          />
+          <circle
+            cx="50"
+            cy="50"
+            r="1"
+            className="animate-twinkle"
+            style={getRandomStyle()}
+          />
+          <circle
+            cx="55"
+            cy="52"
+            r="1"
+            className="animate-twinkle"
+            style={getRandomStyle()}
+          />
+          <circle
+            cx="30"
+            cy="85"
+            r="1.2"
+            className="animate-twinkle"
+            style={getRandomStyle()}
+          />
+          <circle
+            cx="70"
+            cy="80"
+            r="1.2"
+            className="animate-twinkle"
+            style={getRandomStyle()}
+          />
+
+          <line
+            x1="25"
+            y1="15"
+            x2="45"
+            y2="48"
+            stroke="currentColor"
+            strokeWidth="0.2"
+            className="opacity-20"
+          />
+          <line
+            x1="75"
+            y1="25"
+            x2="55"
+            y2="52"
+            stroke="currentColor"
+            strokeWidth="0.2"
+            className="opacity-20"
+          />
+          <line
+            x1="45"
+            y1="48"
+            x2="30"
+            y2="85"
+            stroke="currentColor"
+            strokeWidth="0.2"
+            className="opacity-20"
+          />
+          <line
+            x1="55"
+            y1="52"
+            x2="70"
+            y2="80"
+            stroke="currentColor"
+            strokeWidth="0.2"
+            className="opacity-20"
+          />
+        </svg>
+      </div>
+
+      {/* Auriga (마차부자리) - Top Right */}
+      <div className="absolute top-10 right-10 w-64 h-64 opacity-25 rotate-[15deg]">
+        <svg
+          viewBox="0 0 100 100"
+          className="w-full h-full text-blue-200 fill-current"
+        >
+          <circle
+            cx="50"
+            cy="15"
+            r="1.3"
+            className="animate-twinkle"
+            style={getRandomStyle()}
+          />{" "}
+          {/* Capella */}
+          <circle
+            cx="20"
+            cy="35"
+            r="1"
+            className="animate-twinkle"
+            style={getRandomStyle()}
+          />
+          <circle
+            cx="25"
+            cy="75"
+            r="1"
+            className="animate-twinkle"
+            style={getRandomStyle()}
+          />
+          <circle
+            cx="75"
+            cy="75"
+            r="1"
+            className="animate-twinkle"
+            style={getRandomStyle()}
+          />
+          <circle
+            cx="85"
+            cy="35"
+            r="1"
+            className="animate-twinkle"
+            style={getRandomStyle()}
+          />
+          <line
+            x1="50"
+            y1="15"
+            x2="20"
+            y2="35"
+            stroke="currentColor"
+            strokeWidth="0.2"
+            className="opacity-20"
+          />
+          <line
+            x1="20"
+            y1="35"
+            x2="25"
+            y2="75"
+            stroke="currentColor"
+            strokeWidth="0.2"
+            className="opacity-20"
+          />
+          <line
+            x1="25"
+            y1="75"
+            x2="75"
+            y2="75"
+            stroke="currentColor"
+            strokeWidth="0.2"
+            className="opacity-20"
+          />
+          <line
+            x1="75"
+            y1="75"
+            x2="85"
+            y2="35"
+            stroke="currentColor"
+            strokeWidth="0.2"
+            className="opacity-20"
+          />
+          <line
+            x1="85"
+            y1="35"
+            x2="50"
+            y2="15"
+            stroke="currentColor"
+            strokeWidth="0.2"
+            className="opacity-20"
+          />
+        </svg>
+      </div>
+
+      {/* Big Dipper (북두칠성) - Top Left */}
+      <div className="absolute top-20 left-10 w-80 h-48 opacity-25 rotate-[-5deg]">
+        <svg
+          viewBox="0 0 100 60"
+          className="w-full h-full text-slate-200 fill-current"
+        >
+          {/* Handle */}
+          <circle
+            cx="10"
+            cy="20"
+            r="1"
+            className="animate-twinkle"
+            style={getRandomStyle()}
+          />
+          <circle
+            cx="25"
+            cy="25"
+            r="1"
+            className="animate-twinkle"
+            style={getRandomStyle()}
+          />
+          <circle
+            cx="40"
+            cy="35"
+            r="1"
+            className="animate-twinkle"
+            style={getRandomStyle()}
+          />
+          {/* Bowl */}
+          <circle
+            cx="55"
+            cy="45"
+            r="1.1"
+            className="animate-twinkle"
+            style={getRandomStyle()}
+          />
+          <circle
+            cx="75"
+            cy="45"
+            r="1.1"
+            className="animate-twinkle"
+            style={getRandomStyle()}
+          />
+          <circle
+            cx="80"
+            cy="15"
+            r="1.1"
+            className="animate-twinkle"
+            style={getRandomStyle()}
+          />
+          <circle
+            cx="60"
+            cy="10"
+            r="1.1"
+            className="animate-twinkle"
+            style={getRandomStyle()}
+          />
+
+          <line
+            x1="10"
+            y1="20"
+            x2="25"
+            y2="25"
+            stroke="currentColor"
+            strokeWidth="0.2"
+            className="opacity-20"
+          />
+          <line
+            x1="25"
+            y1="25"
+            x2="40"
+            y2="35"
+            stroke="currentColor"
+            strokeWidth="0.2"
+            className="opacity-20"
+          />
+          <line
+            x1="40"
+            y1="35"
+            x2="55"
+            y2="45"
+            stroke="currentColor"
+            strokeWidth="0.2"
+            className="opacity-20"
+          />
+          <line
+            x1="55"
+            y1="45"
+            x2="75"
+            y2="45"
+            stroke="currentColor"
+            strokeWidth="0.2"
+            className="opacity-20"
+          />
+          <line
+            x1="75"
+            y1="45"
+            x2="80"
+            y2="15"
+            stroke="currentColor"
+            strokeWidth="0.2"
+            className="opacity-20"
+          />
+          <line
+            x1="80"
+            y1="15"
+            x2="60"
+            y2="10"
+            stroke="currentColor"
+            strokeWidth="0.2"
+            className="opacity-20"
+          />
+          <line
+            x1="60"
+            y1="10"
+            x2="55"
+            y2="45"
+            stroke="currentColor"
+            strokeWidth="0.2"
+            className="opacity-20"
+          />
+        </svg>
+      </div>
+    </div>
+  );
+}
--- a/src/lib/constants.ts
+++ b/src/lib/constants.ts
@@ -0,0 +1,25 @@
+import { Route } from "@/types";
+
+export const ROUTES: Route[] = [
+  {
+    id: "station",
+    name: "우주정거장",
+    durationMinutes: 0, // 0 implies unlimited
+    tag: "대기/자유",
+    description: "시간 제한 없이 머무를 수 있는 안전지대",
+  },
+  {
+    id: "orion",
+    name: "오리온",
+    durationMinutes: 60,
+    tag: "딥워크",
+    description: "60분 집중 항해",
+  },
+  {
+    id: "gemini",
+    name: "쌍둥이자리",
+    durationMinutes: 30,
+    tag: "숏스프린트",
+    description: "30분 집중 항해",
+  },
+];
--- a/src/lib/store.ts
+++ b/src/lib/store.ts
@@ -0,0 +1,43 @@
+import { Voyage, UserPreferences } from "@/types";
+
+const KEYS = {
+  HISTORY: 'focustella_history_v1',
+  CURRENT: 'focustella_current_v1',
+  PREFS: 'focustella_prefs_v1',
+};
+
+export const getHistory = (): Voyage[] => {
+  if (typeof window === 'undefined') return [];
+  const item = localStorage.getItem(KEYS.HISTORY);
+  return item ? JSON.parse(item) : [];
+};
+
+export const saveToHistory = (voyage: Voyage) => {
+  const history = getHistory();
+  // Add to beginning
+  localStorage.setItem(KEYS.HISTORY, JSON.stringify([voyage, ...history]));
+};
+
+export const getCurrentVoyage = (): Voyage | null => {
+  if (typeof window === 'undefined') return null;
+  const item = localStorage.getItem(KEYS.CURRENT);
+  return item ? JSON.parse(item) : null;
+};
+
+export const saveCurrentVoyage = (voyage: Voyage | null) => {
+  if (voyage === null) {
+    localStorage.removeItem(KEYS.CURRENT);
+  } else {
+    localStorage.setItem(KEYS.CURRENT, JSON.stringify(voyage));
+  }
+};
+
+export const getPreferences = (): UserPreferences => {
+  if (typeof window === 'undefined') return { hideSeconds: false };
+  const item = localStorage.getItem(KEYS.PREFS);
+  return item ? JSON.parse(item) : { hideSeconds: false };
+};
+
+export const savePreferences = (prefs: UserPreferences) => {
+  localStorage.setItem(KEYS.PREFS, JSON.stringify(prefs));
+};
--- a/src/types/index.ts
+++ b/src/types/index.ts
@@ -0,0 +1,28 @@
+export interface Route {
+  id: string;
+  name: string;
+  durationMinutes: number;
+  tag: string;
+  description: string;
+}
+
+export type VoyageStatus = 'completed' | 'partial' | 'reoriented' | 'aborted' | 'in_progress';
+
+export interface Voyage {
+  id: string;
+  routeId: string;
+  routeName: string;
+  startedAt: number;
+  endedAt?: number;
+  durationMinutes: number;
+  status: VoyageStatus;
+  missionText: string;
+  notes?: string;
+  debriefProgress?: string;
+  nextAction?: string;
+  blockerTag?: string;
+}
+
+export interface UserPreferences {
+  hideSeconds: boolean;
+}
Author	SHA1	Message	Date
corpi	bb1a6fbdab	feat: 홈 배경 별자리 및 비행 화면 배경 생성	2026-02-13 14:42:53 +09:00
corpi	35188c7b52	feat: 일지 작성 화면	2026-02-13 11:42:11 +09:00
corpi	751b34c39f	feat: 세션 진입 전 목표 세팅	2026-02-13 11:37:18 +09:00
corpi	e9bd08c75d	feat: 일지 작성화면 및 일지 화면	2026-02-13 11:36:44 +09:00
corpi	15c2100ba2	feat: 설정화면 생성	2026-02-13 11:36:21 +09:00
corpi	c37678ca01	feat: 메인화면 배경 생성	2026-02-13 11:36:05 +09:00
corpi	1fd357cf95	feat: 세션 진행화면 생성	2026-02-13 11:35:06 +09:00
corpi	73654788da	chore: 커밋 누락	2026-02-12 22:59:17 +09:00
corpi	751c99ebe6	refactor: 이름 변경	2026-02-12 22:59:06 +09:00