/* =============================================================
   style.css  –  Daily Life Tracker (Premium Redesign)
   ============================================================= */

@import url('https://fonts.googleapis.com/css2?family=DM+Serif+Display&family=DM+Sans:wght@300;400;500;600&family=DM+Mono:wght@400;500&display=swap');

:root {
  /* Light mode tokens */
  --bg:          #fdfcf9;
  --surface:     #ffffff;
  --surface-2:   #f7f5f0;
  --border:      #eeebe3;
  --text:        #1a1714;
  --text-2:      #7c756d;
  --text-3:      #b0a8a0;
  --accent:      #d97706;
  --accent-soft: rgba(217, 119, 6, 0.08);
  --accent-2:    #fbbf24;
  --green:       #10b981;
  --red:         #ef4444;
  --radius:      20px;
  --radius-sm:   12px;
  --shadow:      0 4px 20px rgba(0,0,0,0.04), 0 2px 4px rgba(0,0,0,0.02);
  --shadow-lg:   0 12px 40px rgba(0,0,0,0.08), 0 4px 12px rgba(0,0,0,0.04);
  --font-display: 'DM Serif Display', serif;
  --font-sans:    'DM Sans', system-ui, sans-serif;
  --font-mono:    'DM Mono', monospace;
  --transition:   0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

body.dark {
  --bg:          #0f0f0e;
  --surface:     #171716;
  --surface-2:   #1f1f1d;
  --border:      #262624;
  --text:        #fdfcf9;
  --text-2:      #9d968d;
  --text-3:      #5f5850;
  --accent:      #f59e0b;
  --accent-soft: rgba(245, 158, 11, 0.12);
  --shadow:      0 4px 20px rgba(0,0,0,0.4), 0 2px 4px rgba(0,0,0,0.2);
  --shadow-lg:   0 20px 50px rgba(0,0,0,0.6), 0 4px 12px rgba(0,0,0,0.4);
}

* { margin: 0; padding: 0; box-sizing: border-box; -webkit-tap-highlight-color: transparent; }

body {
  font-family: var(--font-sans);
  background: var(--bg);
  color: var(--text);
  line-height: 1.5;
  transition: background var(--transition), color var(--transition);
  min-height: 100dvh;
}

button { cursor: pointer; border: none; background: none; font: inherit; transition: var(--transition); }
input, textarea { font: inherit; color: inherit; background: none; border: none; }
ul { list-style: none; }

.screen { display: none !important; opacity: 0; transform: translateY(10px); transition: opacity 0.4s ease, transform 0.4s ease; }
.screen.active { display: flex !important; flex-direction: column; opacity: 1; transform: translateY(0); }

/* ── Typography ───────────────────────────────────────────── */
h1, h2, h3 { font-family: var(--font-display); font-weight: 400; }

/* ── Header ───────────────────────────────────────────────── */
.app-header {
  padding: 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  position: sticky;
  top: 0;
  background: rgba(var(--bg), 0.8);
  backdrop-filter: blur(12px);
  z-index: 100;
}
.header-logo { font-family: var(--font-display); font-size: 24px; letter-spacing: -0.5px; }
.btn-icon {
  width: 44px; height: 44px;
  display: flex; align-items: center; justify-content: center;
  background: var(--surface-2);
  border-radius: 50%;
  color: var(--text);
}
.btn-icon:hover { background: var(--accent-soft); color: var(--accent); transform: rotate(15deg); }

/* ── Hero Section ─────────────────────────────────────────── */
.hero-section { padding: 0 24px 24px; }
.score-container {
  background: var(--surface);
  padding: 32px;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
  margin-bottom: 16px;
  position: relative;
  overflow: hidden;
}
.score-label { font-size: 14px; text-transform: uppercase; letter-spacing: 1.5px; color: var(--text-2); margin-bottom: 8px; }
.score-value-container { font-family: var(--font-display); font-size: 56px; line-height: 1; margin-bottom: 16px; }
.score-percent { font-size: 24px; color: var(--accent); margin-left: 2px; }
.score-bar-bg { height: 6px; background: var(--surface-2); border-radius: 3px; overflow: hidden; }
.score-bar-fill { height: 100%; background: var(--accent); transition: width 1s cubic-bezier(0.4, 0, 0.2, 1); width: 0%; }

.stats-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.stat-card {
  background: var(--surface);
  padding: 20px;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
}
.stat-label { font-size: 13px; color: var(--text-2); margin-bottom: 4px; }
.stat-value { font-family: var(--font-display); font-size: 24px; color: var(--text); }

/* ── Date Navigation ──────────────────────────────────────── */
.date-nav { padding: 12px 24px; display: flex; align-items: center; justify-content: space-between; }
.current-date-display { font-family: var(--font-display); font-size: 28px; }
.btn-text { color: var(--accent); font-weight: 500; font-size: 14px; }

/* ── Main Content Cards ───────────────────────────────────── */
.app-main { padding: 0 24px 100px; }
.card {
  background: var(--surface);
  padding: 24px;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
  margin-bottom: 24px;
}
.card-title { font-size: 22px; margin-bottom: 20px; display: flex; align-items: center; justify-content: space-between; }

/* ── Habits ───────────────────────────────────────────────── */
.habit-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(140px, 1fr)); gap: 12px; }
.habit-btn {
  padding: 16px;
  border-radius: var(--radius-sm);
  background: var(--surface-2);
  border: 1px solid transparent;
  display: flex; flex-direction: column; align-items: flex-start; gap: 8px;
  text-align: left;
}
.habit-btn.active { background: var(--accent-soft); border-color: var(--accent); }
.habit-btn span { font-weight: 500; font-size: 14px; }
.habit-check { color: var(--accent); font-size: 18px; line-height: 1; }

/* ── Tasks ────────────────────────────────────────────────── */
.task-list { margin-bottom: 20px; }
.task-item {
  display: flex; align-items: center; justify-content: space-between;
  padding: 14px 0; border-bottom: 1px solid var(--border);
}
.task-item:last-child { border-bottom: none; }
.task-label { display: flex; align-items: center; gap: 12px; flex: 1; cursor: pointer; }
.task-title { font-size: 16px; transition: var(--transition); }
.task-item.done .task-title { color: var(--text-3); text-decoration: line-through; }

.task-label input { display: none; }
.checkmark {
  width: 22px; height: 22px;
  border: 2px solid var(--border);
  border-radius: 6px;
  position: relative;
  transition: var(--transition);
}
.task-label input:checked + .checkmark { background: var(--accent); border-color: var(--accent); }
.task-label input:checked + .checkmark::after {
  content: '✓'; position: absolute; inset: 0;
  display: flex; align-items: center; justify-content: center;
  color: white; font-size: 14px;
}

.btn-delete { color: var(--text-3); font-size: 20px; padding: 4px; opacity: 0; transition: var(--transition); }
.task-item:hover .btn-delete, .schedule-slot:hover .btn-delete { opacity: 1; }
.btn-delete:hover { color: var(--red); }

.task-form { display: flex; gap: 10px; background: var(--surface-2); padding: 6px; border-radius: var(--radius-sm); }
.task-form input { flex: 1; padding: 10px 14px; font-size: 15px; }
.btn-add {
  width: 38px; height: 38px;
  background: var(--accent);
  color: white;
  border-radius: var(--radius-sm);
  font-size: 24px;
  display: flex; align-items: center; justify-content: center;
}

/* ── Notes ────────────────────────────────────────────────── */
.notes-area {
  width: 100%; height: 120px;
  padding: 16px;
  background: var(--surface-2);
  border-radius: var(--radius-sm);
  resize: none;
  font-size: 15px;
}

/* ── Navigation ───────────────────────────────────────────── */
.bottom-nav {
  position: fixed; bottom: 24px; left: 24px; right: 24px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 30px;
  display: flex; padding: 8px;
  box-shadow: var(--shadow-lg);
  z-index: 1000;
}
.nav-item {
  flex: 1; padding: 12px; border-radius: 25px;
  text-align: center; font-weight: 500; font-size: 14px; color: var(--text-2);
}
.nav-item.active { background: var(--accent); color: white; }

/* ── Overlays (Glassmorphism) ─────────────────────────────── */
.overlay {
  position: fixed; inset: 0;
  background: rgba(0,0,0,0.2);
  backdrop-filter: blur(8px);
  z-index: 2000;
  display: none; align-items: flex-end;
}
.overlay.active { display: flex; }
.overlay-content {
  width: 100%; background: var(--surface);
  border-top-left-radius: 32px; border-top-right-radius: 32px;
  padding: 32px 24px 60px;
  box-shadow: 0 -10px 40px rgba(0,0,0,0.1);
  transform: translateY(100%);
  transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}
.overlay.active .overlay-content { transform: translateY(0); }

.overlay-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 24px; }
.btn-close { font-size: 32px; color: var(--text-3); }

.settings-section { margin-bottom: 32px; }
.settings-section h3 { font-family: var(--font-sans); font-weight: 600; font-size: 16px; margin-bottom: 16px; color: var(--text-2); }

.settings-habit-item {
  display: flex; align-items: center; justify-content: space-between;
  padding: 12px; background: var(--surface-2); border-radius: var(--radius-sm);
  margin-bottom: 8px;
}
.btn-delete-habit { color: var(--red); font-size: 20px; }

.schedule-list { display: flex; flex-direction: column; gap: 8px; }
.schedule-slot {
  display: flex; align-items: center; gap: 12px;
  padding: 12px; background: var(--surface-2);
  border-radius: var(--radius-sm); border: 1px solid transparent;
  transition: var(--transition);
}
.schedule-slot.active {
  border-color: var(--accent); background: var(--accent-soft);
  box-shadow: 0 0 15px var(--accent-soft);
}
.schedule-slot.done { opacity: 0.7; }

.slot-time-group { display: flex; align-items: center; gap: 4px; }
.slot-time-input {
  width: 65px; padding: 4px 6px; font-size: 13px; font-family: var(--font-mono);
  background: var(--surface); border: 1px solid var(--border); border-radius: 4px;
}
.slot-task-input {
  flex: 1; padding: 6px; font-size: 14px;
  background: transparent; border-bottom: 1px solid transparent;
}
.slot-task-input:focus { border-bottom-color: var(--accent); outline: none; }

.badge-accent {
  padding: 4px 10px; background: var(--accent); color: white;
  border-radius: 20px; font-size: 12px; font-weight: 600; font-family: var(--font-mono);
}

body.dark .slot-time-input { background: var(--surface-2); border-color: var(--border); }
.btn-secondary {
  width: 100%; padding: 14px;
  background: var(--surface-2); color: var(--text);
  border-radius: var(--radius-sm); font-weight: 500;
}
.overlay-content.full-page {
  height: 100dvh;
  border-radius: 0;
  overflow-y: auto;
}

.btn-back {
  display: flex; align-items: center; gap: 8px;
  color: var(--text-2); font-weight: 500; font-size: 14px;
}
.btn-back:hover { color: var(--accent); }

.btn-danger-outline {
  width: 100%; padding: 16px;
  border: 1.5px solid #fee2e2;
  background: #fff;
  color: var(--red);
  border-radius: var(--radius-sm);
  font-weight: 600;
  transition: var(--transition);
}
.btn-danger-outline:hover { background: #fef2f2; border-color: #fecaca; }

body.dark .btn-danger-outline {
  background: #171716;
  border-color: #450a0a;
}

/* ── Auth Screen ──────────────────────────────────────────── */
.auth-container { width: 100%; max-width: 400px; margin: auto; padding: 40px 24px; }
.auth-subtitle { color: var(--text-2); margin-bottom: 32px; }
.form-group { margin-bottom: 20px; }
.form-group label { display: block; font-size: 14px; font-weight: 500; margin-bottom: 8px; color: var(--text-2); }
.form-group input {
  width: 100%; padding: 14px;
  background: var(--surface-2); border-radius: var(--radius-sm);
  border: 1px solid transparent;
}
.form-group input:focus { border-color: var(--accent); outline: none; }
.auth-toggle { margin-top: 20px; color: var(--accent); font-size: 14px; font-weight: 500; width: 100%; }

/* ── Utility ──────────────────────────────────────────────── */
#loading-overlay { flex-direction: column; color: white; }
.spinner {
  width: 40px; height: 40px;
  border: 3px solid rgba(255,255,255,0.2);
  border-top-color: white;
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}
/* ── Mobile Responsiveness ────────────────────────────────── */
@media (max-width: 600px) {
  .app-header { padding: 16px; }
  .hero-section { padding: 0 16px 16px; }
  .app-main { padding: 0 16px 100px; }
  
  .score-container { padding: 24px 20px; }
  .score-value-container { font-size: 44px; }
  
  .stats-grid { grid-template-columns: 1fr; gap: 12px; }
  
  .schedule-slot { 
    flex-wrap: wrap; 
    padding: 10px; 
    gap: 8px;
  }
  .slot-time-group { width: 100%; justify-content: space-between; border-bottom: 1px solid var(--border); padding-bottom: 8px; margin-bottom: 4px; }
  .slot-task-input { font-size: 16px; } /* Prevent iOS zoom */
  
  .habit-grid { grid-template-columns: 1fr 1fr; }
  
  .overlay-content { padding: 24px 16px 40px; }
  .overlay-header h2 { font-size: 20px; }
  
  .bottom-nav { left: 12px; right: 12px; bottom: 12px; }
  
  .btn-delete { opacity: 1; } /* Always show delete on mobile since no hover */
}

@keyframes spin { to { transform: rotate(360deg); } }

.sync-status { font-size: 12px; color: var(--green); font-family: var(--font-mono); }