/* 
================================================================
  매일의 나를 기록하는 감정 기록 다이어리 - CSS Design System
================================================================
*/

/* 1. Global Reset & Fonts */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: 'Outfit', 'Noto Sans KR', sans-serif;
  -webkit-tap-highlight-color: transparent;
}

:root {
  /* Colors - Light Theme */
  --bg-gradient: linear-gradient(135deg, #f5f3ff 0%, #e0e7ff 100%);
  --card-bg: rgba(255, 255, 255, 0.65);
  --card-bg-solid: #ffffff;
  --card-border: rgba(255, 255, 255, 0.5);
  --border-radius: 24px;
  --border-radius-sm: 12px;
  
  --text-primary: #1e1b4b;
  --text-secondary: #4f46e5;
  --text-muted: #6b7280;
  
  --shadow: 0 10px 30px 0 rgba(79, 70, 229, 0.08);
  --shadow-hover: 0 15px 35px 0 rgba(79, 70, 229, 0.15);
  --accent: #6366f1;
  --accent-light: #e0e7ff;
  --accent-hover: #4f46e5;
  --danger: #ef4444;
  --danger-light: #fee2e2;
  
  /* Mood Colors (Light) */
  --color-happy: #fde047;
  --color-excited: #f97316;
  --color-calm: #4ade80;
  --color-sad: #60a5fa;
  --color-angry: #f87171;
  --color-tired: #94a3b8;
  
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --safe-area-top: env(safe-area-inset-top, 0px);
  --safe-area-bottom: env(safe-area-inset-bottom, 0px);
}

[data-theme="dark"] {
  /* Colors - Dark Theme */
  --bg-gradient: linear-gradient(135deg, #09090b 0%, #0c0a09 50%, #180f2a 100%);
  --card-bg: rgba(15, 23, 42, 0.55);
  --card-bg-solid: #0f172a;
  --card-border: rgba(255, 255, 255, 0.06);
  
  --text-primary: #f8fafc;
  --text-secondary: #a5b4fc;
  --text-muted: #94a3b8;
  
  --shadow: 0 10px 30px 0 rgba(0, 0, 0, 0.35);
  --shadow-hover: 0 15px 35px 0 rgba(0, 0, 0, 0.5);
  --accent: #818cf8;
  --accent-light: #1e1b4b;
  --accent-hover: #6366f1;
  --danger: #f87171;
  --danger-light: #451a1a;
}

body {
  background: var(--bg-gradient);
  color: var(--text-primary);
  min-height: 100vh;
  display: flex;
  justify-content: center;
  align-items: flex-start;
  transition: var(--transition);
  padding: calc(24px + var(--safe-area-top)) 16px calc(24px + var(--safe-area-bottom)) 16px;
  overflow-x: hidden;
}

/* 2. Container Layout */
.app-container {
  width: 100%;
  max-width: 760px;
  display: flex;
  flex-direction: column;
  gap: 20px;
  animation: fadeIn 0.6s ease-out;
}

/* 3. Glassmorphism Card Style */
.glass-card {
  background: var(--card-bg);
  backdrop-filter: blur(18px) saturate(160%);
  -webkit-backdrop-filter: blur(18px) saturate(160%);
  border: 1px solid var(--card-border);
  border-radius: var(--border-radius);
  box-shadow: var(--shadow);
  padding: 24px;
  transition: var(--transition);
}

.glass-card:hover {
  box-shadow: var(--shadow-hover);
}

/* 4. Header Component Styling */
header {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  padding: 16px 24px;
  gap: 12px;
}

.brand-section {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.brand-title {
  font-size: 1.5rem;
  font-weight: 700;
  background: linear-gradient(135deg, var(--accent) 0%, #ec4899 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  letter-spacing: -0.5px;
  white-space: nowrap;
  word-break: keep-all;
}

.brand-subtitle {
  font-size: 0.8rem;
  color: var(--text-muted);
  font-weight: 400;
}

.actions-section {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
}

/* Common Button Styling */
.btn-icon {
  background: transparent;
  border: 1px solid var(--card-border);
  color: var(--text-primary);
  width: 42px;
  height: 42px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: var(--transition);
}

.btn-icon:hover {
  background: var(--accent-light);
  color: var(--accent);
  transform: translateY(-2px);
}

.btn-primary {
  background: var(--accent);
  color: white;
  border: none;
  padding: 10px 18px;
  border-radius: var(--border-radius-sm);
  font-weight: 600;
  font-size: 0.9rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 8px;
  transition: var(--transition);
}

.btn-primary:hover {
  background: var(--accent-hover);
  transform: translateY(-2px);
}

.btn-secondary {
  background: var(--card-border);
  color: var(--text-primary);
  border: 1px solid var(--card-border);
  padding: 10px 18px;
  border-radius: var(--border-radius-sm);
  font-weight: 600;
  font-size: 0.9rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 8px;
  transition: var(--transition);
}

.btn-secondary:hover {
  background: var(--accent-light);
  color: var(--accent);
}

/* User Account Display */
.user-profile {
  display: flex;
  align-items: center;
  gap: 10px;
  background: var(--card-border);
  padding: 6px 14px 6px 6px;
  border-radius: 30px;
  border: 1px solid var(--card-border);
}

.user-avatar {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  object-fit: cover;
  border: 1.5px solid var(--accent);
}

.user-name {
  font-size: 0.85rem;
  font-weight: 600;
  max-width: 80px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* 5. Calendar Layout */
.calendar-card {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.calendar-header {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
}

.current-month-year {
  font-size: 1.25rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 6px;
}

.month-nav {
  display: flex;
  gap: 8px;
}

/* Weekday Grid */
.weekdays-grid {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  text-align: center;
  border-bottom: 1px solid var(--card-border);
  padding-bottom: 8px;
}

.weekday-cell {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-muted);
}
.weekday-cell:first-child { color: var(--danger); } /* Sunday */
.weekday-cell:last-child { color: #3b82f6; } /* Saturday */

/* Days Grid */
.days-grid {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 8px;
}

.day-cell {
  aspect-ratio: 1;
  border-radius: var(--border-radius-sm);
  background: rgba(255, 255, 255, 0.15);
  border: 1px solid var(--card-border);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: space-between;
  padding: 8px 4px;
  cursor: pointer;
  position: relative;
  transition: var(--transition);
}

[data-theme="dark"] .day-cell {
  background: rgba(15, 23, 42, 0.25);
}

.day-cell:hover {
  transform: translateY(-3px) scale(1.03);
  background: var(--accent-light);
  border-color: var(--accent);
}

.day-number {
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-primary);
  align-self: flex-start;
  margin-left: 4px;
}

.day-cell.sunday .day-number { color: var(--danger); }
.day-cell.saturday .day-number { color: #3b82f6; }

/* Inactive dates from prev/next month */
.day-cell.other-month {
  opacity: 0.25;
  cursor: default;
}
.day-cell.other-month:hover {
  transform: none;
  background: rgba(255, 255, 255, 0.15);
  border-color: var(--card-border);
}

/* Today Highlighter */
.day-cell.today {
  box-shadow: inset 0 0 0 2px var(--accent);
  background: rgba(99, 102, 241, 0.05);
}

/* Mood Indicators on Calendar */
.day-emoji {
  font-size: 1.4rem;
  line-height: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 24px;
  height: 24px;
  animation: popIn 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.day-emoji svg {
  width: 100%;
  height: 100%;
}

.day-preview-text {
  font-size: 0.65rem;
  color: var(--text-muted);
  max-width: 90%;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  text-align: center;
}

/* Day cell background color overlay based on mood */
.day-cell.has-entry {
  background: rgba(255, 255, 255, 0.4);
}

[data-theme="dark"] .day-cell.has-entry {
  background: rgba(30, 41, 59, 0.4);
}

/* 6. Summary Dashboard Component */
.summary-container {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.summary-title {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 12px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}

@media (max-width: 480px) {
  .stats-grid {
    grid-template-columns: 1fr;
  }
}

.stat-card {
  background: var(--card-border);
  padding: 16px;
  border-radius: var(--border-radius-sm);
  border: 1px solid var(--card-border);
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  gap: 8px;
}

.stat-value {
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--accent);
}

.stat-desc {
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* Mood Ratio Bar Graph */
.mood-ratio-container {
  background: var(--card-border);
  padding: 18px;
  border-radius: var(--border-radius-sm);
  border: 1px solid var(--card-border);
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.mood-bar-wrapper {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.mood-bar-row {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.85rem;
}

.mood-bar-label {
  width: 70px;
  display: flex;
  align-items: center;
  gap: 6px;
  font-weight: 500;
}

.mood-bar-label .svg-icon {
  width: 18px;
  height: 18px;
  display: inline-block;
}

.mood-bar-track {
  flex-grow: 1;
  height: 8px;
  background: rgba(0, 0, 0, 0.05);
  border-radius: 4px;
  overflow: hidden;
  position: relative;
}

[data-theme="dark"] .mood-bar-track {
  background: rgba(255, 255, 255, 0.05);
}

.mood-bar-fill {
  height: 100%;
  border-radius: 4px;
  transition: width 0.8s cubic-bezier(0.4, 0, 0.2, 1);
  width: 0%;
}

.mood-bar-pct {
  width: 32px;
  text-align: right;
  color: var(--text-muted);
  font-size: 0.8rem;
  font-weight: 500;
}

/* 7. Modal Base & Glass Overlay */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(15, 23, 42, 0.4);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  z-index: 1000;
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 16px;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
}

.modal-overlay.active {
  opacity: 1;
  pointer-events: all;
}

.modal-box {
  background: var(--card-bg-solid);
  border: 1px solid var(--card-border);
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.15);
  border-radius: var(--border-radius);
  width: 100%;
  max-width: 480px;
  padding: 28px;
  display: flex;
  flex-direction: column;
  gap: 20px;
  transform: scale(0.9) translateY(20px);
  transition: transform 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
  overflow-y: auto;
  max-height: calc(100vh - 40px);
}

.modal-overlay.active .modal-box {
  transform: scale(1) translateY(0);
}

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.modal-title {
  font-size: 1.2rem;
  font-weight: 700;
}

/* Diary Edit Modal - Emoji Picker Grid */
.emoji-picker-section {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.picker-label {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-muted);
}

.emoji-grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 8px;
  background: var(--bg-gradient);
  padding: 12px;
  border-radius: var(--border-radius-sm);
  border: 1px solid var(--card-border);
}

.emoji-item {
  aspect-ratio: 1;
  font-size: 1.6rem;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  border-radius: 50%;
  transition: var(--transition);
  border: 2px solid transparent;
  padding: 4px; /* Give room for SVGs */
}

.emoji-item svg {
  width: 100%;
  height: 100%;
}

.emoji-item:hover {
  background: rgba(255, 255, 255, 0.5);
  transform: scale(1.15);
}

.emoji-item.selected {
  background: var(--card-bg-solid);
  border-color: var(--accent);
  box-shadow: var(--shadow);
  transform: scale(1.12);
}

/* Emoji Tabs */
.emoji-tabs {
  display: flex;
  gap: 8px;
  margin-bottom: 4px;
  padding: 4px;
  background: var(--bg-gradient);
  border-radius: var(--border-radius-sm);
  border: 1px solid var(--card-border);
}

.emoji-tab-btn {
  flex: 1;
  background: transparent;
  border: none;
  padding: 8px 0;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-muted);
  border-radius: 8px;
  cursor: pointer;
  transition: var(--transition);
}

.emoji-tab-btn:hover {
  background: rgba(255, 255, 255, 0.4);
}

.emoji-tab-btn.active {
  background: var(--card-bg-solid);
  color: var(--text-primary);
  box-shadow: var(--shadow);
}

/* Custom Emoji Adder Row */
.custom-emoji-adder {
  display: flex;
  gap: 8px;
  align-items: center;
  margin-top: 6px;
}

.input-text {
  flex-grow: 1;
  background: var(--bg-gradient);
  border: 1px solid var(--card-border);
  color: var(--text-primary);
  padding: 12px 16px;
  border-radius: var(--border-radius-sm);
  outline: none;
  font-size: 0.9rem;
  transition: var(--transition);
}

.input-text:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.15);
}

.btn-add-emoji {
  background: var(--card-border);
  border: 1px solid var(--card-border);
  color: var(--text-primary);
  padding: 0 16px;
  height: 44px;
  border-radius: var(--border-radius-sm);
  font-weight: 600;
  font-size: 0.85rem;
  cursor: pointer;
  transition: var(--transition);
}

.btn-add-emoji:hover {
  background: var(--accent-light);
  color: var(--accent);
}

/* Form Area */
.form-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.textarea-message {
  background: var(--bg-gradient);
  border: 1px solid var(--card-border);
  color: var(--text-primary);
  padding: 14px;
  border-radius: var(--border-radius-sm);
  outline: none;
  font-size: 0.9rem;
  resize: none;
  height: 90px;
  transition: var(--transition);
}

.textarea-message:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.15);
}

.char-counter {
  align-self: flex-end;
  font-size: 0.75rem;
  color: var(--text-muted);
}

/* Modal Action Buttons */
.modal-actions {
  display: flex;
  justify-content: flex-end;
  gap: 10px;
  margin-top: 10px;
}

.modal-actions .btn-delete {
  background: transparent;
  color: var(--danger);
  border: 1px solid var(--danger);
  padding: 10px 18px;
  border-radius: var(--border-radius-sm);
  font-weight: 600;
  font-size: 0.9rem;
  cursor: pointer;
  transition: var(--transition);
  margin-right: auto; /* Push delete to far left */
}

.modal-actions .btn-delete:hover {
  background: var(--danger-light);
  transform: translateY(-2px);
}

/* Sync Configuration Modal Specifics */
.sync-help-text {
  font-size: 0.8rem;
  color: var(--text-muted);
  line-height: 1.4;
}

.config-status-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  border-radius: 20px;
  font-size: 0.75rem;
  font-weight: 600;
  align-self: flex-start;
}

.config-status-badge.connected {
  background: #d1fae5;
  color: #065f46;
}

[data-theme="dark"] .config-status-badge.connected {
  background: #064e3b;
  color: #a7f3d0;
}

.config-status-badge.disconnected {
  background: #f3f4f6;
  color: #374151;
}

[data-theme="dark"] .config-status-badge.disconnected {
  background: #374151;
  color: #d1d5db;
}

/* 8. Toast Notification System */
.toast-container {
  position: fixed;
  bottom: calc(24px + var(--safe-area-bottom));
  left: 50%;
  transform: translateX(-50%) translateY(100px);
  background: var(--card-bg-solid);
  border: 1px solid var(--card-border);
  color: var(--text-primary);
  padding: 12px 24px;
  border-radius: 50px;
  box-shadow: 0 10px 25px rgba(0,0,0,0.15);
  font-size: 0.85rem;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 8px;
  z-index: 2000;
  transition: transform 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275), opacity 0.4s;
  opacity: 0;
  pointer-events: none;
}

.toast-container.active {
  transform: translateX(-50%) translateY(0);
  opacity: 1;
}

/* 9. Keyframes and animations */
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(12px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes popIn {
  0% { transform: scale(0.6); opacity: 0; }
  70% { transform: scale(1.1); }
  100% { transform: scale(1); opacity: 1; }
}

/* App Install banner (PWA) */
.install-banner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: linear-gradient(135deg, rgba(99, 102, 241, 0.15) 0%, rgba(236, 72, 153, 0.15) 100%);
  border: 1px dashed var(--accent);
  padding: 14px 20px;
  border-radius: var(--border-radius-sm);
  animation: fadeIn 0.4s ease-out;
}

.install-text {
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-primary);
}


/* ================= LOCK SCREEN ================= */
.lock-screen-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(15, 23, 42, 0.85); /* Dark solid overlay */
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
}

.lock-screen-box {
  width: 90%;
  max-width: 400px;
  padding: 40px 20px;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
}

#password-error {
  min-height: 20px;
}

/* Mobile Responsive Adjustments */
@media (max-width: 480px) {
  body {
    padding: calc(16px + var(--safe-area-top)) 10px calc(16px + var(--safe-area-bottom)) 10px;
  }
  
  .glass-card {
    padding: 16px 12px;
  }

  header {
    padding: 12px;
  }

  .days-grid {
    gap: 4px;
  }

  .day-cell {
    padding: 6px 2px;
  }

  .day-number {
    font-size: 0.8rem;
    margin-left: 2px;
  }
  
  .day-emoji {
    font-size: 1.2rem;
  }
}