@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&family=Outfit:wght@500;700;800;900&display=swap');

/* CSS Variables */
:root {
  /* Light Mode Palette */
  --bg-main: #f0f4f8;
  --bg-gradient: linear-gradient(135deg, #e0eaf5 0%, #f8fafc 100%);
  --glass-bg: rgba(255, 255, 255, 0.65);
  --glass-border: rgba(255, 255, 255, 0.5);
  --glass-shadow: 0 8px 32px 0 rgba(31, 38, 135, 0.07);
  
  --font-primary: 'Be Vietnam Pro', sans-serif;
  --font-secondary: 'Be Vietnam Pro', sans-serif;
  
  --text-primary: #1e293b;
  --text-secondary: #64748b;
  
  --accent-primary: #3b82f6;
  --accent-secondary: #8b5cf6;
  --accent-gradient: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
  
  --success: #10b981;
  --danger: #ef4444;
  --danger-bg: rgba(239, 68, 68, 0.1);
  
  --input-bg: rgba(255, 255, 255, 0.8);
  --input-border: rgba(203, 213, 225, 0.6);
  --input-focus: var(--accent-primary);
  
  --chat-self: var(--accent-gradient);
  --chat-others: rgba(255, 255, 255, 0.8);
  
  --radius-sm: 12px;
  --radius-md: 20px;
  --radius-lg: 32px;
  --radius-full: 9999px;
}

[data-theme="dark"] {
  --bg-main: #0f172a;
  --bg-gradient: linear-gradient(135deg, #0f172a 0%, #1e1b4b 100%);
  --glass-bg: rgba(15, 23, 42, 0.45);
  --glass-border: rgba(255, 255, 255, 0.08);
  --glass-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.3);
  
  --text-primary: #f8fafc;
  --text-secondary: #94a3b8;
  
  --accent-primary: #60a5fa;
  --accent-secondary: #a78bfa;
  
  --input-bg: rgba(30, 41, 59, 0.6);
  --input-border: rgba(51, 65, 85, 0.6);
  --input-focus: var(--accent-primary);
  
  --chat-others: rgba(30, 41, 59, 0.8);
}

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

html {
  scroll-behavior: smooth;
  font-family: var(--font-primary), system-ui, sans-serif;
  color: var(--text-primary);
}

body {
  background: var(--bg-gradient);
  min-height: 100vh;
  overflow-x: hidden;
  transition: background 0.5s ease, color 0.5s ease;
  position: relative;
  -webkit-user-select: none;
  -moz-user-select: none;
  -ms-user-select: none;
  user-select: none;
}

input, textarea {
  -webkit-user-select: auto;
  -moz-user-select: auto;
  -ms-user-select: auto;
  user-select: auto;
}

/* Ambient Background Blobs for Glassmorphism effect */
.ambient-blob {
  position: fixed;
  border-radius: 50%;
  filter: blur(80px);
  z-index: -1;
  opacity: 0.5;
  animation: float 20s infinite alternate ease-in-out;
}
.blob-1 { top: -10%; left: -10%; width: 50vw; height: 50vw; background: rgba(59, 130, 246, 0.2); }
.blob-2 { bottom: -10%; right: -10%; width: 60vw; height: 60vw; background: rgba(139, 92, 246, 0.2); animation-delay: -5s; }
[data-theme="dark"] .blob-1 { background: rgba(59, 130, 246, 0.15); }
[data-theme="dark"] .blob-2 { background: rgba(139, 92, 246, 0.15); }

@keyframes float {
  0% { transform: translate(0, 0) scale(1); }
  50% { transform: translate(5%, 10%) scale(1.1); }
  100% { transform: translate(-5%, -5%) scale(0.9); }
}

/* Layout */
.container {
  width: min(1200px, 100% - 32px);
  margin: 0 auto;
  padding: 24px 0 60px;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-secondary), sans-serif;
  color: var(--text-primary);
}

.title-gradient {
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* Reusable Glass Panel */
.glass-panel {
  background: var(--glass-bg);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--glass-shadow);
  transition: transform 0.3s ease, box-shadow 0.3s ease, background 0.3s ease;
}

/* Header */
.app-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 16px 24px;
  margin-bottom: 32px;
  border-radius: var(--radius-full);
}

.brand {
  display: flex;
  align-items: center;
  gap: 16px;
  text-decoration: none;
}
.brand-logo {
  background: var(--accent-gradient);
  color: white;
  width: 48px;
  height: 48px;
  border-radius: 14px;
  display: grid;
  place-items: center;
  font-family: var(--font-secondary), sans-serif;
  font-weight: 900;
  font-size: 1.2rem;
  box-shadow: 0 4px 12px rgba(59, 130, 246, 0.3);
}
.brand-text h1 {
  font-size: 1.25rem;
  line-height: 1.2;
}
.brand-text p {
  font-size: 0.85rem;
  color: var(--text-secondary);
  font-weight: 500;
}

/* Theme Toggle */
.theme-toggle {
  background: var(--input-bg);
  border: 1px solid var(--input-border);
  color: var(--text-primary);
  width: 44px;
  height: 44px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  cursor: pointer;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}
.theme-toggle:hover {
  transform: rotate(15deg) scale(1.1);
  box-shadow: 0 4px 12px rgba(0,0,0,0.05);
}
.theme-toggle svg { width: 20px; height: 20px; fill: currentColor; }
[data-theme="dark"] .icon-moon { display: none; }
[data-theme="light"] .icon-sun { display: none; }

/* Bento Grid System */
.bento-grid {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  grid-auto-rows: minmax(180px, auto);
  gap: 24px;
}

/* Grid Item Placements */
.bento-hero { grid-column: span 12; }
.bento-todo { grid-column: span 4; grid-row: span 2; }
.bento-timer { grid-column: span 8; }
.bento-music { grid-column: span 5; }
.bento-quote { grid-column: span 3; }
.bento-news { grid-column: span 12; }

@media (max-width: 1024px) {
  .bento-todo { grid-column: span 6; }
  .bento-timer { grid-column: span 12; }
  .bento-music { grid-column: span 6; }
  .bento-quote { grid-column: span 12; }
}
@media (max-width: 768px) {
  .bento-grid { display: flex; flex-direction: column; }
}

/* Hero Countdown */
.countdown-section {
  padding: 48px 32px;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
}
.countdown-section h2 {
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 800;
  margin-bottom: 12px;
  letter-spacing: -0.02em;
}
.countdown-date {
  font-size: 1.1rem;
  color: var(--text-secondary);
  margin-bottom: 40px;
  font-weight: 500;
}
.timer-blocks {
  display: flex;
  gap: 24px;
  justify-content: center;
  width: 100%;
}
.timer-unit {
  background: var(--input-bg);
  border: 1px solid var(--input-border);
  padding: 24px 16px;
  border-radius: 24px;
  min-width: 140px;
  box-shadow: 0 4px 16px rgba(0,0,0,0.02);
  display: flex;
  flex-direction: column;
  align-items: center;
}
.timer-unit strong {
  font-family: var(--font-secondary), sans-serif;
  font-size: clamp(3rem, 6vw, 4.5rem);
  font-weight: 800;
  line-height: 1;
  color: var(--text-primary);
  font-variant-numeric: tabular-nums;
}
.timer-unit span {
  font-size: 0.9rem;
  text-transform: uppercase;
  font-weight: 700;
  color: var(--text-secondary);
  letter-spacing: 0.1em;
  margin-top: 8px;
}
@media (max-width: 640px) {
  .timer-blocks { flex-wrap: wrap; gap: 12px; }
  .timer-unit { min-width: calc(50% - 6px); padding: 16px 12px; border-radius: 16px; }
  .timer-unit strong { font-size: 2.5rem; }
}

/* Card Content Common */
.card-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 20px;
}
.card-icon {
  font-size: 1.5rem;
}
.card-title {
  font-size: 1.25rem;
  font-weight: 700;
}
.bento-card {
  padding: 24px;
  display: flex;
  flex-direction: column;
}

/* Buttons & Inputs */
.btn {
  border: none;
  border-radius: var(--radius-sm);
  padding: 12px 20px;
  font-family: var(--font-primary), sans-serif;
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  transition: transform 0.2s, box-shadow 0.2s, opacity 0.2s;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
}
.btn:active { transform: scale(0.96); }
.btn-primary {
  background: var(--accent-gradient);
  color: white;
  box-shadow: 0 4px 12px rgba(59, 130, 246, 0.3);
}
.btn-primary:hover { opacity: 0.9; box-shadow: 0 6px 16px rgba(59, 130, 246, 0.4); }
.btn-secondary {
  background: var(--input-bg);
  border: 1px solid var(--input-border);
  color: var(--text-primary);
}
.btn-secondary:hover { background: var(--glass-border); }

.input-field {
  width: 100%;
  padding: 12px 16px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--input-border);
  background: var(--input-bg);
  color: var(--text-primary);
  font-family: inherit;
  font-size: 0.95rem;
  outline: none;
  transition: border-color 0.2s, box-shadow 0.2s;
}
.input-field:focus {
  border-color: var(--input-focus);
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.15);
}

/* To-Do List */
.todo-container {
  display: flex;
  flex-direction: column;
  height: 100%;
}
.todo-form {
  display: flex;
  gap: 8px;
  margin-bottom: 16px;
}
.todo-list {
  list-style: none;
  overflow-y: auto;
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding-right: 4px;
}
.todo-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 16px;
  background: var(--input-bg);
  border: 1px solid var(--input-border);
  border-radius: var(--radius-sm);
  transition: all 0.2s;
}
.todo-item:hover {
  border-color: var(--text-secondary);
}
.todo-checkbox {
  appearance: none;
  width: 20px;
  height: 20px;
  border: 2px solid var(--text-secondary);
  border-radius: 6px;
  cursor: pointer;
  position: relative;
  transition: all 0.2s;
  flex-shrink: 0;
}
.todo-checkbox:checked {
  background: var(--success);
  border-color: var(--success);
}
.todo-checkbox:checked::after {
  content: '✓';
  position: absolute;
  color: white;
  font-size: 14px;
  font-weight: bold;
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
}
.todo-text {
  flex: 1;
  font-size: 0.95rem;
  transition: color 0.2s, text-decoration 0.2s;
}
.todo-item.completed .todo-text {
  text-decoration: line-through;
  color: var(--text-secondary);
}
.todo-delete {
  background: transparent;
  border: none;
  color: var(--text-secondary);
  cursor: pointer;
  opacity: 0;
  transition: opacity 0.2s, color 0.2s;
}
.todo-item:hover .todo-delete { opacity: 1; }
.todo-delete:hover { color: var(--danger); }

/* Custom Scrollbar for lists/chat */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--input-border); border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: var(--text-secondary); }

/* Tools: Timers */
.timer-tabs {
  display: flex;
  gap: 8px;
  background: var(--input-bg);
  padding: 6px;
  border-radius: var(--radius-sm);
  margin-bottom: 24px;
}
.timer-tab {
  flex: 1;
  background: transparent;
  border: none;
  padding: 10px;
  border-radius: 8px;
  font-weight: 600;
  color: var(--text-secondary);
  cursor: pointer;
  transition: all 0.2s;
}
.timer-tab.active {
  background: var(--text-primary);
  color: var(--bg-main);
}
[data-theme="dark"] .timer-tab.active {
  background: var(--text-primary);
  color: var(--bg-main);
}

.timer-panel { display: none; flex-direction: column; align-items: center; gap: 24px; }
.timer-panel.active { display: flex; }
.timer-display {
  font-family: var(--font-secondary), sans-serif;
  font-size: clamp(4rem, 8vw, 6rem);
  font-weight: 800;
  font-variant-numeric: tabular-nums;
  color: var(--accent-primary);
  line-height: 1;
}
.timer-controls {
  display: flex;
  gap: 12px;
  width: 100%;
}
.timer-controls .btn { flex: 1; }

/* Music Player */
.music-input-group {
  display: flex;
  gap: 8px;
  margin-bottom: 16px;
}
.music-player iframe {
  width: 100%;
  aspect-ratio: 16/9;
  border-radius: var(--radius-sm);
  border: 1px solid var(--input-border);
  background: var(--input-bg);
}

/* Quotes */
.quote-wrapper {
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: center;
  text-align: center;
  padding: 24px;
  margin-bottom: 16px;
}
.quote-text {
  font-size: 1.15rem;
  font-style: italic;
  font-weight: 500;
  line-height: 1.6;
  margin-bottom: 16px;
}
.quote-author {
  font-weight: 700;
  color: var(--accent-primary);
  font-size: 0.95rem;
}

/* News List */
.news-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 16px;
  list-style: none;
}
.news-item {
  display: flex;
  flex-direction: column;
  padding: 16px;
  background: var(--input-bg);
  border: 1px solid var(--input-border);
  border-radius: var(--radius-sm);
  text-decoration: none;
  color: inherit;
  transition: transform 0.2s, border-color 0.2s;
}
.news-item:hover {
  transform: translateY(-4px);
  border-color: var(--accent-primary);
}
.news-title {
  font-weight: 600;
  margin-bottom: 8px;
  line-height: 1.4;
}
.news-date {
  font-size: 0.85rem;
  color: var(--text-secondary);
  margin-top: auto;
}

/* Footer */
.app-footer {
  text-align: center;
  color: var(--text-secondary);
  font-size: 0.9rem;
  margin-top: 20px;
}

/* Floating Chat */
.chat-fab {
  position: fixed;
  bottom: 32px;
  right: 32px;
  width: 64px;
  height: 64px;
  border-radius: 50%;
  background: var(--accent-gradient);
  color: white;
  border: none;
  cursor: pointer;
  box-shadow: 0 12px 24px rgba(59, 130, 246, 0.4);
  display: grid;
  place-items: center;
  z-index: 50;
  transition: transform 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}
.chat-fab:hover { transform: scale(1.1) translateY(-4px); }
.chat-fab svg { width: 28px; height: 28px; fill: currentColor; }

/* Dialog / Popover Styling for Chat */
.chat-dialog {
  padding: 0;
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  background: var(--glass-bg);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  box-shadow: var(--glass-shadow);
  width: min(400px, 100vw - 32px);
  height: min(600px, 80vh);
  margin: auto;
  position: fixed;
  bottom: 110px;
  right: 32px;
  top: auto;
  left: auto;
  color: var(--text-primary);
}
/* Native Dialog Backdrop */
.chat-dialog::backdrop {
  background: rgba(0,0,0,0.2);
  backdrop-filter: blur(4px);
}
/* Dialog Transition (Supported in modern browsers via @starting-style) */
.chat-dialog {
  transition: display 0.3s allow-discrete, overlay 0.3s allow-discrete, transform 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275), opacity 0.3s;
  opacity: 0;
  transform: translateY(20px) scale(0.95);
}
.chat-dialog[open] {
  opacity: 1;
  transform: translateY(0) scale(1);
}
@starting-style {
  .chat-dialog[open] {
    opacity: 0;
    transform: translateY(20px) scale(0.95);
  }
}

.chat-container {
  display: flex;
  flex-direction: column;
  height: 100%;
}
.chat-header {
  padding: 16px 20px;
  border-bottom: 1px solid var(--glass-border);
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: rgba(255, 255, 255, 0.05);
}
.chat-header h3 { font-size: 1.1rem; display: flex; align-items: center; gap: 8px; }
.btn-close {
  background: none;
  border: none;
  color: var(--text-secondary);
  cursor: pointer;
  font-size: 1.5rem;
  line-height: 1;
  transition: color 0.2s;
}
.btn-close:hover { color: var(--danger); }

.chat-messages {
  flex: 1;
  padding: 20px;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.msg-wrapper { display: flex; flex-direction: column; max-width: 85%; }
.msg-wrapper.self { align-self: flex-end; align-items: flex-end; }
.msg-wrapper.others { align-self: flex-start; align-items: flex-start; }
.msg-sender { font-size: 0.75rem; color: var(--text-secondary); margin-bottom: 4px; font-weight: 600; }
.msg-bubble {
  padding: 10px 14px;
  border-radius: 18px;
  font-size: 0.95rem;
  line-height: 1.4;
  word-wrap: break-word;
}
.msg-wrapper.self .msg-bubble {
  background: var(--chat-self);
  color: white;
  border-bottom-right-radius: 4px;
}
.msg-wrapper.others .msg-bubble {
  background: var(--chat-others);
  color: var(--text-primary);
  border-bottom-left-radius: 4px;
  border: 1px solid var(--input-border);
}
.sys-msg {
  text-align: center;
  font-size: 0.8rem;
  color: var(--text-secondary);
  margin: 4px 0;
}

.chat-input-area {
  padding: 16px;
  border-top: 1px solid var(--glass-border);
  display: flex;
  flex-direction: column;
  gap: 12px;
  background: rgba(255, 255, 255, 0.05);
}
.chat-name-input { display: flex; flex-direction: column; gap: 4px; }
.chat-name-hint { font-size: 0.75rem; color: var(--text-secondary); }
.chat-input-row { display: flex; gap: 8px; }

@media (max-width: 640px) {
  .chat-dialog {
    width: 100vw;
    height: 100dvh;
    bottom: 0;
    right: 0;
    border-radius: 0;
    border: none;
  }
}