/* ============================================
   Notes App - Premium iOS-Style Design
   ============================================ */

/* CSS Variables */
:root {
  /* Colors - Dark Theme */
  --bg-primary: #000000;
  --bg-secondary: #1c1c1e;
  --bg-tertiary: #2c2c2e;
  --bg-elevated: #3a3a3c;

  /* Text Colors */
  --text-primary: #ffffff;
  --text-secondary: #8e8e93;
  --text-tertiary: #636366;

  /* Accent Colors */
  --accent-primary: #0a84ff;
  --accent-secondary: #5e5ce6;
  --accent-success: #30d158;
  --accent-warning: #ffd60a;
  --accent-danger: #ff453a;

  /* Glow Colors */
  --glow-primary: rgba(10, 132, 255, 0.5);
  --glow-success: rgba(48, 209, 88, 0.5);
  --glow-danger: rgba(255, 69, 58, 0.5);
  --glow-white: rgba(255, 255, 255, 0.1);

  /* Spacing */
  --spacing-xs: 4px;
  --spacing-sm: 8px;
  --spacing-md: 16px;
  --spacing-lg: 24px;
  --spacing-xl: 32px;

  /* Border Radius */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 20px;

  /* Transitions */
  --transition-fast: 0.15s ease;
  --transition-normal: 0.25s ease;
  --transition-slow: 0.4s ease;

  /* Shadows */
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.5);
}

/* Reset & Base */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html,
body {
  height: 100%;
  overflow: hidden;
}

body {
  font-family:
    -apple-system, BlinkMacSystemFont, "SF Pro Display", "SF Pro Text",
    "Helvetica Neue", Arial, sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* ============================================
   Auth Container
   ============================================ */
.auth-container {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, #0a0a0a 0%, #1a1a2e 50%, #16213e 100%);
  position: relative;
  overflow: hidden;
}

.auth-card {
  background: rgba(28, 28, 30, 0.8);
  backdrop-filter: blur(20px);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-xl);
  padding: var(--spacing-xl) 40px;
  width: 100%;
  max-width: 400px;
  margin: var(--spacing-lg);
  text-align: center;
  position: relative;
  z-index: 10;
  box-shadow:
    0 25px 50px -12px rgba(0, 0, 0, 0.5),
    0 0 0 1px rgba(255, 255, 255, 0.05),
    inset 0 1px 0 rgba(255, 255, 255, 0.1);
  animation: cardAppear 0.6s ease-out;
}

@keyframes cardAppear {
  from {
    opacity: 0;
    transform: translateY(30px) scale(0.95);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

.auth-header {
  margin-bottom: var(--spacing-xl);
}

.auth-logo {
  position: relative;
  display: inline-block;
  margin-bottom: var(--spacing-md);
}

.auth-logo-icon {
  font-size: 64px;
  display: block;
  animation: float 3s ease-in-out infinite;
}

.auth-logo-glow {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 100px;
  height: 100px;
  background: radial-gradient(circle, var(--glow-primary) 0%, transparent 70%);
  border-radius: 50%;
  filter: blur(20px);
  animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
  0%,
  100% {
    opacity: 0.5;
    transform: translate(-50%, -50%) scale(1);
  }
  50% {
    opacity: 0.8;
    transform: translate(-50%, -50%) scale(1.1);
  }
}

.auth-title {
  font-size: 36px;
  font-weight: 700;
  letter-spacing: -1px;
  margin-bottom: var(--spacing-xs);
  background: linear-gradient(135deg, #fff 0%, #a0a0a0 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.auth-subtitle {
  font-size: 16px;
  color: var(--text-secondary);
}

.auth-buttons {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-lg);
}

.auth-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-md);
  width: 100%;
  padding: var(--spacing-md) var(--spacing-lg);
  border: none;
  border-radius: var(--radius-md);
  font-size: 16px;
  font-weight: 600;
  font-family: inherit;
  cursor: pointer;
  transition: all var(--transition-normal);
  position: relative;
  overflow: hidden;
}

.auth-btn::before {
  content: "";
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(
    90deg,
    transparent,
    rgba(255, 255, 255, 0.2),
    transparent
  );
  transition: left 0.5s ease;
}

.auth-btn:hover::before {
  left: 100%;
}

.auth-btn-icon {
  width: 24px;
  height: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
}

.auth-btn-google {
  background: #ffffff;
  color: #333;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}

.auth-btn-google:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.3);
}

.auth-btn-google:active {
  transform: translateY(-1px) scale(0.98);
}

.auth-btn-anonymous {
  background: var(--bg-tertiary);
  color: var(--text-primary);
  border: 1px solid var(--bg-elevated);
}

.auth-btn-anonymous:hover {
  background: var(--bg-elevated);
  transform: translateY(-3px);
  box-shadow: 0 8px 25px rgba(94, 92, 230, 0.3);
  border-color: var(--accent-secondary);
}

.auth-btn-anonymous:active {
  transform: translateY(-1px) scale(0.98);
}

.auth-divider {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  color: var(--text-tertiary);
  font-size: 14px;
}

.auth-divider::before,
.auth-divider::after {
  content: "";
  flex: 1;
  height: 1px;
  background: linear-gradient(
    90deg,
    transparent,
    var(--bg-elevated),
    transparent
  );
}

.auth-footer {
  font-size: 14px;
  color: var(--text-tertiary);
}

/* Auth Particles */
.auth-particles {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  overflow: hidden;
  pointer-events: none;
}

.particle {
  position: absolute;
  width: 10px;
  height: 10px;
  background: var(--accent-primary);
  border-radius: 50%;
  opacity: 0.3;
  animation: particleFloat 15s infinite;
}

.particle:nth-child(1) {
  left: 10%;
  animation-delay: 0s;
}
.particle:nth-child(2) {
  left: 30%;
  animation-delay: 3s;
}
.particle:nth-child(3) {
  left: 50%;
  animation-delay: 6s;
}
.particle:nth-child(4) {
  left: 70%;
  animation-delay: 9s;
}
.particle:nth-child(5) {
  left: 90%;
  animation-delay: 12s;
}

@keyframes particleFloat {
  0% {
    transform: translateY(100vh) scale(0);
    opacity: 0;
  }
  10% {
    opacity: 0.3;
  }
  90% {
    opacity: 0.3;
  }
  100% {
    transform: translateY(-100vh) scale(1);
    opacity: 0;
  }
}

/* ============================================
   User Profile
   ============================================ */
.user-profile {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  padding: var(--spacing-md);
  background: var(--bg-tertiary);
  border-radius: var(--radius-md);
  margin-bottom: var(--spacing-md);
}

.user-avatar {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: linear-gradient(
    135deg,
    var(--accent-primary),
    var(--accent-secondary)
  );
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  flex-shrink: 0;
  overflow: hidden;
}

.user-avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.user-info {
  flex: 1;
  min-width: 0;
}

.user-name {
  display: block;
  font-size: 15px;
  font-weight: 600;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.user-email {
  display: block;
  font-size: 12px;
  color: var(--text-tertiary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* Profile Actions Container */
.profile-actions {
  display: flex;
  flex-direction: column;
  gap: 4px;
  flex-shrink: 0;
}

/* Profile Action Buttons (Install & Logout) */
.btn-profile-action {
  width: 24px;
  height: 24px;
  border: none;
  border-radius: var(--radius-sm);
  background: var(--bg-tertiary);
  color: var(--text-secondary);
  font-size: 12px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-normal);
  padding: 0;
}

.btn-profile-action:hover {
  transform: scale(1.15);
}

.btn-logout {
  background: linear-gradient(135deg, #ff453a, #ff6961);
  color: white;
}

.btn-logout:hover {
  box-shadow: 0 2px 10px var(--glow-danger);
}

.btn-install-pwa {
  background: linear-gradient(135deg, #30d158, #34c759);
  color: white;
}

.btn-install-pwa:hover {
  box-shadow: 0 2px 10px var(--glow-success);
}

/* ============================================
   App Container
   ============================================ */
.app-container {
  display: flex;
  height: 100vh;
  overflow: hidden;
}

/* ============================================
   Sidebar
   ============================================ */
.sidebar {
  width: 320px;
  min-width: 320px;
  background: var(--bg-secondary);
  border-right: 1px solid var(--bg-tertiary);
  display: flex;
  flex-direction: column;
  position: relative;
}

.sidebar-header {
  padding: var(--spacing-lg);
  border-bottom: 1px solid var(--bg-tertiary);
}

.app-title {
  font-size: 28px;
  font-weight: 700;
  letter-spacing: -0.5px;
  margin-bottom: var(--spacing-md);
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.app-title .icon {
  font-size: 32px;
}

/* New Note Button */
.btn-new-note {
  width: 48px;
  height: 48px;
  min-width: 48px;
  padding: 0;
  background: linear-gradient(
    135deg,
    var(--accent-primary),
    var(--accent-secondary)
  );
  border: none;
  border-radius: var(--radius-md);
  color: white;
  font-size: 24px;
  font-weight: 300;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
  transition: all var(--transition-normal);
  box-shadow: 0 4px 15px var(--glow-primary);
}

.btn-new-note::before {
  content: "";
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(
    90deg,
    transparent,
    rgba(255, 255, 255, 0.2),
    transparent
  );
  transition: left 0.5s ease;
}

.btn-new-note:hover {
  transform: translateY(-2px) scale(1.05);
  box-shadow: 0 8px 25px var(--glow-primary);
}

.btn-new-note:hover::before {
  left: 100%;
}

.btn-new-note:active {
  transform: translateY(0) scale(0.95);
  box-shadow: 0 2px 10px var(--glow-primary);
}

.btn-new-note .btn-icon {
  font-size: 28px;
  font-weight: 300;
  line-height: 1;
}

/* Action Row - Tombol + dan Search */
.action-row {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

/* Search */
.search-container {
  flex: 1;
  position: relative;
}

.search-input {
  width: 100%;
  padding: var(--spacing-sm) var(--spacing-md);
  padding-left: 40px;
  background: var(--bg-tertiary);
  border: 2px solid transparent;
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-size: 15px;
  font-family: inherit;
  transition: all var(--transition-normal);
  height: 48px;
}

.search-input::placeholder {
  color: var(--text-tertiary);
}

.search-input:focus {
  outline: none;
  border-color: var(--accent-primary);
  box-shadow: 0 0 0 4px var(--glow-primary);
}

.search-icon {
  position: absolute;
  left: 14px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 14px;
  opacity: 0.5;
}

/* Notes List */
.notes-list {
  flex: 1;
  overflow-y: auto;
  padding: var(--spacing-sm) var(--spacing-md);
}

.notes-list::-webkit-scrollbar {
  width: 6px;
}

.notes-list::-webkit-scrollbar-track {
  background: transparent;
}

.notes-list::-webkit-scrollbar-thumb {
  background: var(--bg-elevated);
  border-radius: 3px;
}

/* Notes Empty State */
.notes-empty {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  height: 100%;
  text-align: center;
  color: var(--text-tertiary);
  padding: var(--spacing-lg);
}

.notes-empty span {
  font-size: 48px;
  margin-bottom: var(--spacing-md);
  opacity: 0.6;
}

.notes-empty p {
  font-size: 14px;
  margin: 0;
}

/* Note Item */
.note-item {
  padding: var(--spacing-md);
  background: var(--bg-tertiary);
  border-radius: var(--radius-md);
  margin-bottom: var(--spacing-sm);
  cursor: pointer;
  transition: all var(--transition-normal);
  border: 2px solid transparent;
  position: relative;
  overflow: hidden;
}

.note-item::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.1), transparent);
  opacity: 0;
  transition: opacity var(--transition-normal);
}

.note-item:hover {
  background: var(--bg-elevated);
  transform: translateX(4px);
  box-shadow: -4px 0 20px var(--glow-white);
}

.note-item:hover::before {
  opacity: 1;
}

.note-item.active {
  border-color: var(--accent-primary);
  box-shadow: 0 0 20px var(--glow-primary);
}

.note-item:active {
  transform: scale(0.98);
}

.note-item-title {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: var(--spacing-xs);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.note-item-preview {
  font-size: 13px;
  color: var(--text-secondary);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  margin-bottom: var(--spacing-sm);
}

.note-item-date {
  font-size: 12px;
  color: var(--text-tertiary);
}

/* Notes Count */
.notes-count {
  padding: var(--spacing-md) var(--spacing-lg);
  font-size: 13px;
  color: var(--text-tertiary);
  text-align: center;
  border-top: 1px solid var(--bg-tertiary);
}

/* ============================================
   Main Content
   ============================================ */
.main-content {
  flex: 1;
  background: var(--bg-primary);
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

/* Empty State */
.empty-state {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  color: var(--text-tertiary);
  padding: var(--spacing-xl);
}

.empty-icon {
  font-size: 80px;
  margin-bottom: var(--spacing-lg);
  opacity: 0.5;
  animation: float 3s ease-in-out infinite;
}

@keyframes float {
  0%,
  100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-10px);
  }
}

.empty-state h2 {
  font-size: 24px;
  font-weight: 600;
  margin-bottom: var(--spacing-sm);
  color: var(--text-secondary);
}

.empty-state p {
  font-size: 16px;
}

/* Note Editor */
.note-editor {
  flex: 1;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.editor-header {
  padding: var(--spacing-lg);
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  border-bottom: 1px solid var(--bg-tertiary);
}

.note-title-input {
  flex: 1;
  padding: var(--spacing-sm) 0;
  background: transparent;
  border: none;
  color: var(--text-primary);
  font-size: 28px;
  font-weight: 700;
  font-family: inherit;
  letter-spacing: -0.5px;
}

.note-title-input::placeholder {
  color: var(--text-tertiary);
}

.note-title-input:focus {
  outline: none;
}

.editor-actions {
  display: flex;
  gap: var(--spacing-sm);
}

/* Action Buttons */
.btn-action {
  width: 44px;
  height: 44px;
  border: none;
  border-radius: var(--radius-md);
  background: var(--bg-tertiary);
  color: var(--text-primary);
  font-size: 20px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-normal);
  position: relative;
  overflow: hidden;
}

.btn-action::before {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0;
  height: 0;
  background: rgba(255, 255, 255, 0.3);
  border-radius: 50%;
  transform: translate(-50%, -50%);
  transition:
    width 0.4s ease,
    height 0.4s ease;
}

.btn-action:hover {
  transform: translateY(-2px);
}

.btn-action:active::before {
  width: 100px;
  height: 100px;
}

.btn-action:active {
  transform: scale(0.9);
}

.btn-preview:hover {
  background: var(--accent-secondary);
  box-shadow: 0 4px 20px rgba(94, 92, 230, 0.5);
}

.btn-preview.active {
  background: var(--accent-secondary);
  box-shadow: 0 0 20px rgba(94, 92, 230, 0.5);
}

.btn-save:hover {
  background: var(--accent-success);
  box-shadow: 0 4px 20px var(--glow-success);
}

.btn-delete:hover {
  background: var(--accent-danger);
  box-shadow: 0 4px 20px var(--glow-danger);
}

/* Editor Meta */
.editor-meta {
  padding: var(--spacing-sm) var(--spacing-lg);
  font-size: 13px;
  color: var(--text-tertiary);
  display: flex;
  gap: var(--spacing-sm);
}

/* Editor Body */
.editor-body {
  flex: 1;
  padding: 0 var(--spacing-lg) var(--spacing-lg);
  overflow: hidden;
  display: flex;
}

.note-content {
  flex: 1;
  width: 100%;
  padding: var(--spacing-md);
  background: var(--bg-secondary);
  border: 2px solid var(--bg-tertiary);
  border-radius: var(--radius-lg);
  color: var(--text-primary);
  font-size: 16px;
  font-family: inherit;
  line-height: 1.7;
  resize: none;
  transition: all var(--transition-normal);
}

.note-content::placeholder {
  color: var(--text-tertiary);
}

.note-content:focus {
  outline: none;
  border-color: var(--accent-primary);
  box-shadow: 0 0 0 4px var(--glow-primary);
}

.markdown-preview {
  flex: 1;
  width: 100%;
  padding: var(--spacing-lg);
  background: var(--bg-secondary);
  border: 2px solid var(--accent-secondary);
  border-radius: var(--radius-lg);
  overflow-y: auto;
  box-shadow: 0 0 20px rgba(94, 92, 230, 0.3);
}

.markdown-preview h1,
.markdown-preview h2,
.markdown-preview h3 {
  margin-bottom: var(--spacing-md);
  font-weight: 700;
}

.markdown-preview h1 {
  font-size: 28px;
}
.markdown-preview h2 {
  font-size: 24px;
}
.markdown-preview h3 {
  font-size: 20px;
}

.markdown-preview p {
  margin-bottom: var(--spacing-md);
}

.markdown-preview code {
  background: var(--bg-tertiary);
  padding: 2px 6px;
  border-radius: 4px;
  font-family: "SF Mono", Menlo, monospace;
}

.markdown-preview pre {
  background: var(--bg-tertiary);
  padding: var(--spacing-md);
  border-radius: var(--radius-sm);
  overflow-x: auto;
  margin-bottom: var(--spacing-md);
}

.markdown-preview ul,
.markdown-preview ol {
  margin-left: var(--spacing-lg);
  margin-bottom: var(--spacing-md);
}

.markdown-preview blockquote {
  border-left: 4px solid var(--accent-primary);
  padding-left: var(--spacing-md);
  color: var(--text-secondary);
  font-style: italic;
}

/* ============================================
   Modal
   ============================================ */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.8);
  backdrop-filter: blur(10px);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-normal);
  z-index: 1000;
}

.modal-overlay.active {
  opacity: 1;
  visibility: visible;
}

.modal {
  background: var(--bg-secondary);
  border-radius: var(--radius-xl);
  padding: var(--spacing-xl);
  max-width: 400px;
  width: 90%;
  text-align: center;
  transform: scale(0.9) translateY(20px);
  transition: all var(--transition-normal);
  box-shadow: var(--shadow-lg);
}

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

.modal-icon {
  font-size: 48px;
  margin-bottom: var(--spacing-md);
}

.modal-title {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: var(--spacing-sm);
}

.modal-message {
  font-size: 15px;
  color: var(--text-secondary);
  margin-bottom: var(--spacing-lg);
}

.modal-actions {
  display: flex;
  gap: var(--spacing-md);
}

.btn-modal {
  flex: 1;
  padding: var(--spacing-md);
  border: none;
  border-radius: var(--radius-md);
  font-size: 16px;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-normal);
  position: relative;
  overflow: hidden;
}

.btn-modal::before {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0;
  height: 0;
  background: rgba(255, 255, 255, 0.3);
  border-radius: 50%;
  transform: translate(-50%, -50%);
  transition:
    width 0.4s ease,
    height 0.4s ease;
}

.btn-modal:active::before {
  width: 200px;
  height: 200px;
}

.btn-cancel {
  background: var(--bg-tertiary);
  color: var(--text-primary);
}

.btn-cancel:hover {
  background: var(--bg-elevated);
  transform: translateY(-2px);
  box-shadow: 0 4px 15px var(--glow-white);
}

.btn-cancel:active {
  transform: scale(0.98);
}

.btn-confirm-delete {
  background: var(--accent-danger);
  color: white;
}

.btn-confirm-delete:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 20px var(--glow-danger);
}

.btn-confirm-delete:active {
  transform: scale(0.98);
}

.btn-confirm-encrypt {
  background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
  color: white;
}

.btn-confirm-encrypt:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 20px var(--glow-primary);
}

.btn-confirm-encrypt:active {
  transform: scale(0.98);
}

/* Encryption Modal Styles */
.encryption-modal {
  max-width: 420px;
}

.modal-input-group {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-lg);
}

.modal-input {
  width: 100%;
  padding: var(--spacing-md);
  background: var(--bg-tertiary);
  border: 2px solid var(--bg-elevated);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-size: 15px;
  font-family: inherit;
  transition: all var(--transition-normal);
}

.modal-input::placeholder {
  color: var(--text-tertiary);
}

.modal-input:focus {
  outline: none;
  border-color: var(--accent-primary);
  box-shadow: 0 0 0 4px var(--glow-primary);
}

/* Lock Button */
.btn-lock:hover {
  background: var(--accent-warning);
  box-shadow: 0 4px 20px rgba(255, 214, 10, 0.5);
}

.btn-lock.locked {
  background: var(--accent-warning);
  box-shadow: 0 0 15px rgba(255, 214, 10, 0.5);
}

/* Encrypted Note Indicator */
.note-item.encrypted::before {
  content: "🔒";
  position: absolute;
  top: var(--spacing-sm);
  right: var(--spacing-sm);
  font-size: 12px;
  z-index: 1;
}

.note-item.encrypted {
  border-left: 3px solid var(--accent-warning);
}

/* Locked Content Placeholder */
.locked-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  height: 100%;
  color: var(--text-tertiary);
  text-align: center;
  padding: var(--spacing-xl);
}

.locked-content .lock-icon {
  font-size: 64px;
  margin-bottom: var(--spacing-md);
  opacity: 0.5;
}

.locked-content h3 {
  font-size: 20px;
  margin-bottom: var(--spacing-sm);
  color: var(--text-secondary);
}

.locked-content p {
  font-size: 14px;
  margin-bottom: var(--spacing-lg);
}

.locked-content .btn-unlock {
  padding: var(--spacing-sm) var(--spacing-lg);
  background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
  border: none;
  border-radius: var(--radius-md);
  color: white;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-normal);
}

/* ============================================
   Toast
   ============================================ */
.toast {
  position: fixed;
  bottom: 30px;
  left: 50%;
  transform: translateX(-50%) translateY(100px);
  background: var(--bg-elevated);
  padding: var(--spacing-md) var(--spacing-lg);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  box-shadow: var(--shadow-lg);
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-normal);
  z-index: 1001;
}

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

.toast.success {
  border: 2px solid var(--accent-success);
  box-shadow: 0 4px 30px var(--glow-success);
}

.toast.error {
  border: 2px solid var(--accent-danger);
  box-shadow: 0 4px 30px var(--glow-danger);
}

.toast-icon {
  font-size: 20px;
}

.toast-message {
  font-size: 15px;
  font-weight: 500;
}

/* ============================================
   Loading Overlay
   ============================================ */
.loading-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: var(--bg-primary);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-lg);
  z-index: 2000;
  transition: all var(--transition-slow);
}

.loading-overlay.hidden {
  opacity: 0;
  visibility: hidden;
}

.loading-spinner {
  width: 50px;
  height: 50px;
  border: 4px solid var(--bg-tertiary);
  border-top-color: var(--accent-primary);
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

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

.loading-overlay p {
  font-size: 16px;
  color: var(--text-secondary);
}

/* ============================================
   Responsive
   ============================================ */

/* Tablet (max-width: 1024px) */
@media (max-width: 1024px) {
  .sidebar {
    width: 280px;
    min-width: 280px;
  }

  .note-title-input {
    font-size: 24px;
  }

  .btn-action {
    width: 40px;
    height: 40px;
    font-size: 18px;
  }
}

/* Mobile (max-width: 768px) */
@media (max-width: 768px) {
  .app-container {
    flex-direction: column;
    position: relative;
  }

  /* Sidebar - Toggle Mode */
  .sidebar {
    width: 100%;
    min-width: unset;
    height: auto;
    max-height: 45vh;
    border-right: none;
    border-bottom: 1px solid var(--bg-tertiary);
    position: relative;
    z-index: 100;
  }

  .sidebar.collapsed {
    max-height: 0;
    overflow: hidden;
    border-bottom: none;
  }

  .sidebar-header {
    padding: var(--spacing-md);
  }

  .user-profile {
    padding: var(--spacing-sm) var(--spacing-md);
    margin-bottom: var(--spacing-sm);
  }

  .user-avatar {
    width: 36px;
    height: 36px;
    font-size: 16px;
  }

  .user-name {
    font-size: 14px;
  }

  .user-email {
    font-size: 11px;
  }

  .btn-logout {
    width: 32px;
    height: 32px;
    font-size: 16px;
  }

  .btn-new-note {
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: 14px;
  }

  .btn-new-note .btn-icon {
    font-size: 18px;
  }

  .search-container {
    padding: var(--spacing-sm) var(--spacing-md);
  }

  .search-input {
    padding: var(--spacing-sm);
    padding-left: 36px;
    font-size: 14px;
  }

  .search-icon {
    left: 28px;
    font-size: 12px;
  }

  .notes-list {
    padding: var(--spacing-xs) var(--spacing-sm);
    max-height: 25vh;
  }

  .note-item {
    padding: var(--spacing-sm) var(--spacing-md);
    margin-bottom: var(--spacing-xs);
  }

  .note-item-title {
    font-size: 14px;
  }

  .note-item-preview {
    font-size: 12px;
    -webkit-line-clamp: 1;
    line-clamp: 1;
    margin-bottom: var(--spacing-xs);
  }

  .note-item-date {
    font-size: 11px;
  }

  .notes-count {
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: 12px;
  }

  /* Main Content */
  .main-content {
    flex: 1;
    min-height: 55vh;
  }

  .empty-state {
    padding: var(--spacing-lg);
  }

  .empty-icon {
    font-size: 60px;
    margin-bottom: var(--spacing-md);
  }

  .empty-state h2 {
    font-size: 20px;
  }

  .empty-state p {
    font-size: 14px;
  }

  /* Note Editor */
  .note-editor {
    height: 100%;
  }

  .editor-header {
    padding: var(--spacing-sm) var(--spacing-md);
    gap: var(--spacing-sm);
    flex-wrap: wrap;
  }

  .note-title-input {
    font-size: 20px;
    width: 100%;
    order: 1;
  }

  .editor-actions {
    order: 2;
    width: 100%;
    justify-content: flex-end;
  }

  .btn-action {
    width: 38px;
    height: 38px;
    font-size: 16px;
  }

  .editor-meta {
    padding: var(--spacing-xs) var(--spacing-md);
    font-size: 11px;
  }

  .editor-body {
    padding: 0 var(--spacing-sm) var(--spacing-sm);
  }

  .note-content {
    font-size: 15px;
    padding: var(--spacing-sm);
  }

  .markdown-preview {
    padding: var(--spacing-md);
    font-size: 15px;
  }

  .markdown-preview h1 {
    font-size: 22px;
  }

  .markdown-preview h2 {
    font-size: 18px;
  }

  .markdown-preview h3 {
    font-size: 16px;
  }

  /* Modal */
  .modal {
    padding: var(--spacing-lg);
    width: 90%;
    max-width: 340px;
  }

  .modal-icon {
    font-size: 40px;
    margin-bottom: var(--spacing-sm);
  }

  .modal-title {
    font-size: 18px;
  }

  .modal-message {
    font-size: 14px;
    margin-bottom: var(--spacing-md);
  }

  .btn-modal {
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: 14px;
  }

  /* Toast */
  .toast {
    bottom: 20px;
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: 14px;
    max-width: 90%;
  }

  .toast-icon {
    font-size: 16px;
  }

  .toast-message {
    font-size: 13px;
  }

  /* Auth Container */
  .auth-card {
    padding: var(--spacing-lg) var(--spacing-xl);
    margin: var(--spacing-md);
    max-width: 360px;
  }

  .auth-logo-icon {
    font-size: 52px;
  }

  .auth-logo-glow {
    width: 80px;
    height: 80px;
  }

  .auth-title {
    font-size: 30px;
  }

  .auth-subtitle {
    font-size: 14px;
  }

  .auth-btn {
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: 14px;
  }

  .auth-btn-icon {
    width: 20px;
    height: 20px;
    font-size: 18px;
  }

  .auth-footer {
    font-size: 12px;
  }

  /* Loading Overlay */
  .loading-spinner {
    width: 40px;
    height: 40px;
  }

  .loading-overlay p {
    font-size: 14px;
  }
}

/* Small Mobile (max-width: 480px) */
@media (max-width: 480px) {
  .sidebar {
    max-height: 40vh;
  }

  .sidebar-header {
    padding: var(--spacing-sm);
  }

  .user-profile {
    padding: var(--spacing-xs) var(--spacing-sm);
    gap: var(--spacing-sm);
  }

  .user-avatar {
    width: 32px;
    height: 32px;
    font-size: 14px;
  }

  .user-name {
    font-size: 13px;
  }

  .user-email {
    font-size: 10px;
  }

  .btn-new-note {
    padding: var(--spacing-xs) var(--spacing-sm);
    font-size: 13px;
  }

  .notes-list {
    max-height: 20vh;
  }

  .note-item {
    padding: var(--spacing-xs) var(--spacing-sm);
  }

  .note-item-title {
    font-size: 13px;
  }

  .note-item-preview {
    font-size: 11px;
  }

  .editor-header {
    padding: var(--spacing-xs) var(--spacing-sm);
  }

  .note-title-input {
    font-size: 18px;
  }

  .btn-action {
    width: 34px;
    height: 34px;
    font-size: 14px;
  }

  .editor-meta {
    font-size: 10px;
    padding: var(--spacing-xs) var(--spacing-sm);
  }

  .note-content {
    font-size: 14px;
  }

  .auth-card {
    padding: var(--spacing-md) var(--spacing-lg);
    margin: var(--spacing-sm);
    border-radius: var(--radius-lg);
  }

  .auth-logo-icon {
    font-size: 44px;
  }

  .auth-title {
    font-size: 26px;
  }

  .auth-subtitle {
    font-size: 13px;
  }

  .auth-btn {
    padding: var(--spacing-sm);
    font-size: 13px;
    gap: var(--spacing-sm);
  }

  .modal {
    padding: var(--spacing-md);
    width: 95%;
  }

  .modal-icon {
    font-size: 36px;
  }

  .modal-title {
    font-size: 16px;
  }

  .modal-message {
    font-size: 13px;
  }

  .modal-actions {
    gap: var(--spacing-sm);
  }

  .btn-modal {
    padding: var(--spacing-xs) var(--spacing-sm);
    font-size: 13px;
  }
}

/* Landscape Mobile */
@media (max-width: 768px) and (orientation: landscape) {
  .app-container {
    flex-direction: row;
  }

  .sidebar {
    width: 40%;
    max-height: 100vh;
    height: 100vh;
    border-right: 1px solid var(--bg-tertiary);
    border-bottom: none;
  }

  .main-content {
    width: 60%;
    min-height: 100vh;
  }

  .notes-list {
    max-height: calc(100vh - 200px);
  }

  .auth-card {
    max-width: 400px;
  }
}

/* Touch Device Optimizations */
@media (hover: none) and (pointer: coarse) {
  .note-item:hover {
    transform: none;
    background: var(--bg-tertiary);
  }

  .note-item:active {
    background: var(--bg-elevated);
    transform: scale(0.98);
  }

  .btn-action:hover {
    transform: none;
  }

  .btn-new-note:hover {
    transform: none;
  }

  .auth-btn:hover {
    transform: none;
  }

  /* Larger touch targets */
  .btn-action {
    min-width: 44px;
    min-height: 44px;
  }

  .note-item {
    min-height: 60px;
  }

  .btn-logout {
    min-width: 44px;
    min-height: 44px;
  }
}

/* ============================================
   Animations
   ============================================ */
@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.note-item {
  animation: fadeIn 0.3s ease forwards;
}

@keyframes pulse {
  0%,
  100% {
    box-shadow: 0 0 0 0 var(--glow-primary);
  }
  50% {
    box-shadow: 0 0 20px 5px var(--glow-primary);
  }
}

.btn-new-note:focus {
  animation: pulse 2s infinite;
}

/* Ripple Effect */
@keyframes ripple {
  to {
    transform: translate(-50%, -50%) scale(4);
    opacity: 0;
  }
}

.ripple {
  position: absolute;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.4);
  transform: translate(-50%, -50%) scale(0);
  animation: ripple 0.6s linear;
  pointer-events: none;
}