/* ==========================================================================
   OdakLise Pro - Ultra-Modern Glassmorphism & Bento UI Styles
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:wght@400;500;600;700;800&family=JetBrains+Mono:wght@500;700;800&display=swap');

:root {
  /* Default Theme: Nebula Dark (Deep Space Violet & Indigo) */
  --bg-base: #090b14;
  --bg-surface: rgba(19, 23, 40, 0.68);
  --bg-surface-elevated: rgba(30, 36, 62, 0.78);
  --bg-glass-hover: rgba(45, 55, 92, 0.55);
  --border-glass: rgba(255, 255, 255, 0.09);
  --border-highlight: rgba(129, 140, 248, 0.35);
  
  --text-main: #f8fafc;
  --text-muted: #94a3b8;
  --text-dim: #64748b;

  --accent-primary: #6366f1;
  --accent-secondary: #a855f7;
  --accent-tertiary: #ec4899;
  --accent-glow: rgba(99, 102, 241, 0.45);

  --orb-1: #4f46e5;
  --orb-2: #9333ea;
  --orb-3: #0ea5e9;

  --success: #10b981;
  --warning: #f59e0b;
  --danger: #ef4444;
  --info: #3b82f6;
}

/* Theme: Emerald Forest (Cozy Nature & Calm) */
[data-theme="forest"] {
  --bg-base: #06120e;
  --bg-surface: rgba(13, 31, 24, 0.72);
  --bg-surface-elevated: rgba(20, 46, 36, 0.82);
  --bg-glass-hover: rgba(30, 68, 53, 0.55);
  --border-glass: rgba(167, 243, 208, 0.1);
  --border-highlight: rgba(52, 211, 153, 0.4);

  --accent-primary: #10b981;
  --accent-secondary: #14b8a6;
  --accent-tertiary: #84cc16;
  --accent-glow: rgba(16, 185, 129, 0.45);

  --orb-1: #059669;
  --orb-2: #0d9488;
  --orb-3: #15803d;
}

/* Theme: Sunset Lo-Fi (Warm Cozy Study) */
[data-theme="sunset"] {
  --bg-base: #140a10;
  --bg-surface: rgba(33, 17, 27, 0.72);
  --bg-surface-elevated: rgba(50, 25, 40, 0.82);
  --bg-glass-hover: rgba(74, 36, 58, 0.55);
  --border-glass: rgba(254, 205, 211, 0.1);
  --border-highlight: rgba(251, 113, 133, 0.4);

  --accent-primary: #f43f5e;
  --accent-secondary: #f97316;
  --accent-tertiary: #eab308;
  --accent-glow: rgba(244, 63, 94, 0.45);

  --orb-1: #e11d48;
  --orb-2: #ea580c;
  --orb-3: #9333ea;
}

/* Theme: Midnight Ocean (Deep Focus Blue) */
[data-theme="ocean"] {
  --bg-base: #040d1a;
  --bg-surface: rgba(10, 25, 47, 0.72);
  --bg-surface-elevated: rgba(17, 38, 70, 0.82);
  --bg-glass-hover: rgba(27, 58, 104, 0.55);
  --border-glass: rgba(186, 230, 253, 0.1);
  --border-highlight: rgba(56, 189, 248, 0.4);

  --accent-primary: #0ea5e9;
  --accent-secondary: #3b82f6;
  --accent-tertiary: #06b6d4;
  --accent-glow: rgba(14, 165, 233, 0.45);

  --orb-1: #0284c7;
  --orb-2: #2563eb;
  --orb-3: #0891b2;
}

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

body {
  font-family: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, sans-serif;
  background-color: var(--bg-base);
  color: var(--text-main);
  overflow-x: hidden;
  min-height: 100vh;
  transition: background-color 0.5s ease, color 0.3s ease;
  user-select: none;
}

.font-mono-timer {
  font-family: 'JetBrains Mono', monospace;
  font-variant-numeric: tabular-nums;
}

/* Animated Ambient Background Orbs */
.ambient-canvas {
  position: fixed;
  inset: 0;
  z-index: -1;
  overflow: hidden;
  pointer-events: none;
  background: radial-gradient(circle at 50% 0%, rgba(255,255,255,0.03) 0%, transparent 70%);
}

.ambient-orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(110px);
  opacity: 0.28;
  animation: floatOrb 22s infinite alternate ease-in-out;
  transition: background 0.8s ease;
}

.orb-1 {
  width: 520px;
  height: 520px;
  background: var(--orb-1);
  top: -120px;
  left: -100px;
}

.orb-2 {
  width: 460px;
  height: 460px;
  background: var(--orb-2);
  bottom: -140px;
  right: -80px;
  animation-delay: -7s;
}

.orb-3 {
  width: 380px;
  height: 380px;
  background: var(--orb-3);
  top: 40%;
  left: 45%;
  opacity: 0.16;
  animation-delay: -14s;
}

@keyframes floatOrb {
  0% { transform: translate(0, 0) scale(1); }
  50% { transform: translate(40px, -30px) scale(1.08); }
  100% { transform: translate(-30px, 40px) scale(0.95); }
}

/* Subtle Grid Pattern Overlay */
.bg-grid-pattern {
  position: fixed;
  inset: 0;
  z-index: -1;
  background-image: 
    linear-gradient(to right, rgba(255, 255, 255, 0.02) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(255, 255, 255, 0.02) 1px, transparent 1px);
  background-size: 40px 40px;
  mask-image: radial-gradient(ellipse at center, black 40%, transparent 85%);
  pointer-events: none;
}

/* Glassmorphism Cards & Surfaces */
.glass-card {
  background: var(--bg-surface);
  backdrop-filter: blur(20px) saturate(160%);
  -webkit-backdrop-filter: blur(20px) saturate(160%);
  border: 1px solid var(--border-glass);
  border-radius: 1.25rem;
  box-shadow: 0 12px 32px -8px rgba(0, 0, 0, 0.4), inset 0 1px 0 0 rgba(255, 255, 255, 0.07);
  transition: transform 0.25s cubic-bezier(0.16, 1, 0.3, 1), border-color 0.25s ease, box-shadow 0.25s ease;
}

.glass-card-interactive:hover {
  border-color: var(--border-highlight);
  transform: translateY(-2px);
  box-shadow: 0 16px 40px -8px rgba(0, 0, 0, 0.5), 0 0 20px -5px var(--accent-glow);
}

.glass-elevated {
  background: var(--bg-surface-elevated);
  backdrop-filter: blur(24px);
  border: 1px solid var(--border-glass);
}

/* Custom Inputs & Selects */
.glass-input {
  background: rgba(15, 23, 42, 0.55);
  border: 1px solid var(--border-glass);
  color: var(--text-main);
  border-radius: 0.75rem;
  padding: 0.625rem 0.875rem;
  font-size: 0.875rem;
  transition: all 0.2s ease;
  outline: none;
}

.glass-input:focus {
  border-color: var(--accent-primary);
  box-shadow: 0 0 0 3px var(--accent-glow);
  background: rgba(15, 23, 42, 0.8);
}

.glass-input option {
  background: #0f172a;
  color: #f8fafc;
}

/* Buttons */
.btn-primary {
  background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
  color: #ffffff;
  font-weight: 600;
  border-radius: 0.875rem;
  border: 1px solid rgba(255, 255, 255, 0.15);
  box-shadow: 0 8px 20px -4px var(--accent-glow);
  transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1);
  cursor: pointer;
}

.btn-primary:hover {
  transform: translateY(-2px) scale(1.01);
  box-shadow: 0 12px 28px -4px var(--accent-glow);
  filter: brightness(1.08);
}

.btn-primary:active {
  transform: translateY(0) scale(0.98);
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-glass);
  color: var(--text-main);
  font-weight: 500;
  border-radius: 0.875rem;
  transition: all 0.2s ease;
  cursor: pointer;
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 0.2);
}

/* Navigation Sidebar Pills */
.nav-item {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.75rem 1rem;
  border-radius: 0.875rem;
  color: var(--text-muted);
  font-weight: 500;
  font-size: 0.925rem;
  transition: all 0.2s ease;
  cursor: pointer;
  border: 1px solid transparent;
  width: 100%;
  text-align: left;
}

.nav-item:hover {
  color: var(--text-main);
  background: rgba(255, 255, 255, 0.04);
}

.nav-item.active {
  color: #ffffff;
  background: linear-gradient(135deg, rgba(99, 102, 241, 0.22), rgba(168, 85, 247, 0.14));
  border-color: var(--border-highlight);
  box-shadow: 0 4px 16px -4px var(--accent-glow);
  font-weight: 600;
}

/* SVG Circular Timer Ring */
.timer-ring-container {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
}

.timer-ring-svg {
  transform: rotate(-90deg);
  overflow: visible;
}

.timer-ring-bg {
  fill: none;
  stroke: rgba(255, 255, 255, 0.06);
  stroke-width: 10;
}

.timer-ring-progress {
  fill: none;
  stroke: url(#timerGradient);
  stroke-width: 10;
  stroke-linecap: round;
  transition: stroke-dashoffset 0.6s cubic-bezier(0.25, 1, 0.5, 1);
  filter: drop-shadow(0 0 10px var(--accent-glow));
}

.timer-pulse-active {
  animation: pulseRing 3s infinite ease-in-out;
}

@keyframes pulseRing {
  0%, 100% { filter: drop-shadow(0 0 8px var(--accent-glow)); }
  50% { filter: drop-shadow(0 0 22px var(--accent-glow)); }
}

/* Custom Range Slider for Sound Mixer */
input[type="range"].sound-slider {
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  height: 6px;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 999px;
  outline: none;
  cursor: pointer;
}

input[type="range"].sound-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--accent-primary);
  box-shadow: 0 0 10px var(--accent-glow);
  cursor: pointer;
  border: 2px solid #ffffff;
  transition: transform 0.15s ease;
}

input[type="range"].sound-slider::-webkit-slider-thumb:hover {
  transform: scale(1.2);
}

/* Custom Scrollbar */
::-webkit-scrollbar {
  width: 6px;
  height: 6px;
}

::-webkit-scrollbar-track {
  background: transparent;
}

::-webkit-scrollbar-thumb {
  background: rgba(255, 255, 255, 0.12);
  border-radius: 999px;
}

::-webkit-scrollbar-thumb:hover {
  background: rgba(255, 255, 255, 0.25);
}

/* Tab Transitions */
.tab-section {
  display: none;
  animation: fadeSlideUp 0.35s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

.tab-section.active {
  display: block;
}

@keyframes fadeSlideUp {
  from {
    opacity: 0;
    transform: translateY(12px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Zen Fullscreen Mode */
body.zen-mode aside,
body.zen-mode header,
body.zen-mode .zen-hide {
  display: none !important;
}

body.zen-mode main {
  margin-left: 0 !important;
  padding: 2rem !important;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
}

body.zen-mode #timer-card-wrapper {
  max-width: 720px;
  width: 100%;
  margin: 0 auto;
}

/* Heatmap Squares */
.heatmap-cell {
  width: 14px;
  height: 14px;
  border-radius: 3px;
  background: rgba(255, 255, 255, 0.06);
  transition: transform 0.15s ease;
}

.heatmap-cell:hover {
  transform: scale(1.3);
  z-index: 10;
}

.heatmap-lvl-1 { background: rgba(99, 102, 241, 0.28); }
.heatmap-lvl-2 { background: rgba(99, 102, 241, 0.52); }
.heatmap-lvl-3 { background: rgba(99, 102, 241, 0.78); }
.heatmap-lvl-4 { background: #6366f1; box-shadow: 0 0 8px var(--accent-glow); }

/* Toast Notification */
.toast-item {
  animation: toastSlideIn 0.35s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

@keyframes toastSlideIn {
  from {
    opacity: 0;
    transform: translateX(40px) scale(0.95);
  }
  to {
    opacity: 1;
    transform: translateX(0) scale(1);
  }
}

/* Checkbox Custom */
.task-checkbox {
  appearance: none;
  width: 20px;
  height: 20px;
  border: 2px solid rgba(255, 255, 255, 0.25);
  border-radius: 6px;
  cursor: pointer;
  display: grid;
  place-content: center;
  transition: all 0.2s ease;
  flex-shrink: 0;
}

.task-checkbox:checked {
  background: var(--success);
  border-color: var(--success);
  box-shadow: 0 0 10px rgba(16, 185, 129, 0.4);
}

.task-checkbox:checked::before {
  content: "✓";
  color: white;
  font-size: 12px;
  font-weight: 800;
}