/* ==========================================
   MODERN, COLORFUL DESIGN SYSTEM
   ========================================== */

/* Import Modern Fonts */
@import url('https://fonts.googleapis.com/css2?family=Poppins:wght@400;600;700;800&family=Inter:wght@400;500;600&family=JetBrains+Mono:wght@400;600&display=swap');

:root {
  /* Vibrant Color Palette */
  --color-cyan: #06b6d4;
  --color-cyan-light: #22d3ee;
  --color-cyan-bright: #67e8f9;
  --color-purple: #a855f7;
  --color-purple-light: #c084fc;
  --color-pink: #ec4899;
  --color-pink-light: #f472b6;
  --color-orange: #f97316;
  --color-orange-light: #fb923c;
  --color-green: #10b981;
  --color-green-light: #34d399;
  --color-red: #ef4444;
  --color-red-light: #f87171;
  --color-yellow: #fbbf24;
  --color-yellow-light: #fcd34d;
  --color-blue: #3b82f6;
  --color-blue-light: #60a5fa;

  /* Neutral Colors */
  --color-white: #ffffff;
  --color-gray-50: #f9fafb;
  --color-gray-100: #f3f4f6;
  --color-gray-200: #e5e7eb;
  --color-gray-300: #d1d5db;
  --color-gray-600: #4b5563;
  --color-gray-700: #374151;
  --color-gray-800: #1f2937;
  --color-gray-900: #111827;

  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
  --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
  --shadow-glow-cyan: 0 0 30px rgba(6, 182, 212, 0.5);
  --shadow-glow-purple: 0 0 30px rgba(168, 85, 247, 0.5);
  --shadow-glow-pink: 0 0 30px rgba(236, 72, 153, 0.5);

  /* Gradients */
  --gradient-primary: linear-gradient(135deg, var(--color-cyan) 0%, var(--color-blue) 50%, var(--color-purple) 100%);
  --gradient-vibrant: linear-gradient(135deg, var(--color-pink) 0%, var(--color-orange) 50%, var(--color-yellow) 100%);
  --gradient-success: linear-gradient(135deg, var(--color-green) 0%, var(--color-cyan) 100%);
  --gradient-bg: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);

  /* Spacing */
  --space-xs: 0.5rem;
  --space-sm: 0.75rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;
  --space-3xl: 4rem;

  /* Border Radius */
  --radius-sm: 0.5rem;
  --radius-md: 0.75rem;
  --radius-lg: 1rem;
  --radius-xl: 1.5rem;
  --radius-2xl: 2rem;
  --radius-full: 9999px;

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-base: 200ms ease;
  --transition-slow: 300ms ease;
}

/* ==========================================
   BASE STYLES
   ========================================== */

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background: linear-gradient(135deg, #e0c3fc 0%, #8ec5fc 100%);
  color: var(--color-gray-800);
  line-height: 1.6;
  min-height: 100vh;
  overflow-x: hidden;
}

/* ==========================================
   TYPOGRAPHY
   ========================================== */

.heading-primary {
  font-family: 'Poppins', sans-serif;
  font-size: 3rem;
  font-weight: 800;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1.2;
  margin-bottom: var(--space-md);
}

.heading-secondary {
  font-family: 'Poppins', sans-serif;
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--color-gray-800);
  margin-bottom: var(--space-sm);
}

.heading-tertiary {
  font-family: 'Poppins', sans-serif;
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--color-gray-700);
  margin-bottom: var(--space-sm);
}

.eyebrow {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: #7c3aed;
  margin-bottom: var(--space-xs);
}

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

/* ==========================================
   LAYOUT
   ========================================== */

.container {
  max-width: 1400px;
  margin: 0 auto;
  padding: var(--space-xl) var(--space-lg);
}

/* Header with Navigation Bar */
.header-nav {
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
  border-bottom: 1px solid rgba(229, 231, 235, 0.6);
  position: sticky;
  top: 0;
  z-index: 100;
  overflow: visible;
}

.header-nav-container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 1rem 1.5rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 2rem;
  overflow: visible;
}

.site-title {
  flex-shrink: 0;
}

.site-title-link {
  font-family: 'Poppins', sans-serif;
  font-size: 1.5rem;
  font-weight: 700;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  text-decoration: none;
  transition: opacity var(--transition-base);
  display: inline-block;
}

.site-title-link:hover {
  opacity: 0.8;
}

.grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-2xl);
  align-items: start;
}

@media (max-width: 1024px) {
  .grid {
    grid-template-columns: 1fr;
    gap: var(--space-xl);
  }

  .heading-primary {
    font-size: 2.25rem;
  }
}

/* ==========================================
   NAVIGATION MENU
   ========================================== */

.nav-menu {
  flex: 1;
  display: flex;
  justify-content: flex-end;
  overflow: visible;
}

.nav-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  align-items: center;
  gap: 0.25rem;
  overflow: visible;
}

.nav-item {
  position: relative;
  flex: 0 0 auto;
}

.nav-link {
  text-decoration: none;
  color: var(--color-gray-700);
  font-weight: 500;
  font-size: 0.875rem;
  padding: 0.625rem 1rem;
  transition: all var(--transition-base);
  display: inline-flex;
  align-items: center;
  height: 100%;
  white-space: nowrap;
  border-radius: var(--radius-sm);
}

.nav-link:hover {
  background: linear-gradient(135deg, rgba(168, 85, 247, 0.1), rgba(6, 182, 212, 0.1));
  color: var(--color-purple);
}

/* Active page highlighting */
.nav-link.active {
  background: linear-gradient(135deg, rgba(168, 85, 247, 0.1), rgba(6, 182, 212, 0.1));
  color: var(--color-purple);
  font-weight: 500;
}

/* Language Dropdown */
.lang-dropdown {
  position: relative;
  display: inline-flex;
  align-items: center;
  z-index: 1001;
}

.lang-dropbtn {
  background: transparent;
  color: var(--color-gray-700);
  font-weight: 500;
  font-size: 0.875rem;
  padding: 0.625rem 1rem;
  border: none;
  cursor: pointer;
  transition: all var(--transition-base);
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
  white-space: nowrap;
  height: 100%;
  border-radius: var(--radius-sm);
}

.lang-dropbtn:hover {
  background: linear-gradient(135deg, rgba(168, 85, 247, 0.1), rgba(6, 182, 212, 0.1));
  color: var(--color-purple);
}

/* Language code styling */
.lang-code {
  font-weight: 600;
  margin-left: 0.25rem;
}

.lang-dropdown-content {
  display: none;
  position: absolute;
  right: 0;
  background: white;
  min-width: 200px;
  box-shadow: 0 10px 40px rgba(0,0,0,.15);
  border-radius: var(--radius-lg);
  z-index: 9999;
  margin-top: 0.5rem;
  max-height: 450px;
  overflow-y: auto;
  border: 1px solid rgba(229, 231, 235, 0.8);
}

.lang-dropdown-content a {
  color: #374151;
  padding: 0.75rem 1.25rem;
  text-decoration: none;
  display: block;
  font-size: 0.875rem;
  transition: all var(--transition-base);
  border-bottom: 1px solid rgba(229, 231, 235, 0.5);
}

.lang-dropdown-content a:last-child {
  border-bottom: none;
}

.lang-dropdown-content a:hover {
  background: linear-gradient(135deg, rgba(168, 85, 247, 0.08), rgba(6, 182, 212, 0.08));
  color: var(--color-purple);
  padding-left: 1.5rem;
}

.lang-show {
  display: block;
}

/* Mobile Navigation */
@media (max-width: 1024px) {
  .header-nav-container {
    flex-direction: column;
    gap: 1rem;
    padding: 1rem;
  }

  .site-title-link {
    font-size: 1.25rem;
  }

  .nav-menu {
    width: 100%;
  }

  .nav-list {
    flex-direction: column;
    align-items: stretch;
    width: 100%;
  }

  .nav-item {
    width: 100%;
  }

  .nav-link {
    padding: 0.75rem 1rem;
    justify-content: center;
    border-bottom: 1px solid rgba(229, 231, 235, 0.3);
  }

  .nav-item:last-child .nav-link {
    border-bottom: none;
  }

  .lang-dropbtn {
    width: 100%;
    justify-content: center;
    padding: 0.75rem 1rem;
  }

  .lang-dropdown-content {
    position: static;
    box-shadow: none;
    border: none;
    border-radius: 0;
    margin-top: 0;
    background: rgba(249, 250, 251, 0.5);
  }

  .lang-dropdown-content a {
    padding-left: 2rem;
    font-size: 0.8125rem;
  }

  .lang-dropdown-content a:hover {
    padding-left: 2.25rem;
  }
}

/* ==========================================
   CARDS & PANELS
   ========================================== */

.card {
  background: var(--color-white);
  border-radius: var(--radius-xl);
  padding: var(--space-xl);
  box-shadow: var(--shadow-xl);
  border: 1px solid var(--color-gray-100);
  transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-2xl);
}

.card-header {
  margin-bottom: var(--space-lg);
}

.panel {
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
}

/* ==========================================
   COLOR SCREEN
   ========================================== */

.screen-container {
  position: relative;
  width: 100%;
  padding-bottom: 56.25%; /* 16:9 aspect ratio (9/16 = 0.5625) */
  border-radius: var(--radius-xl);
  background: linear-gradient(135deg, var(--color-cyan) 0%, var(--color-purple) 100%);
  box-shadow: var(--shadow-2xl), var(--shadow-glow-cyan);
  border: 3px solid var(--color-white);
  overflow: visible;
}

/* iOS/Fallback Fullscreen Mode */
.screen-container.ios-fullscreen {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  height: 100dvh; /* Use dynamic viewport height for mobile browsers */
  padding-bottom: 0;
  border-radius: 0;
  border: none;
  box-shadow: none;
  z-index: 99999;
  margin: 0;
}

/* Hide everything except the fullscreen container when in iOS fullscreen */
body:has(.ios-fullscreen) > *:not(script):not(style) {
  display: none !important;
}

body:has(.ios-fullscreen) .ios-fullscreen {
  display: block !important;
}

body:has(.ios-fullscreen) {
  overflow: hidden;
  margin: 0;
  padding: 0;
  background: #000;
}

#screen {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  border-radius: inherit;
  background: inherit;
  transition: all var(--transition-slow);
  overflow: hidden;
}

#screen::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle, rgba(255, 255, 255, 0.1) 0%, transparent 70%);
  animation: rotate 20s linear infinite;
}

@keyframes rotate {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

/* Fullscreen Button Overlay */
.btn-fullscreen-overlay {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  background: var(--gradient-primary);
  color: var(--color-white);
  font-family: 'Inter', sans-serif;
  font-size: 0.8125rem;
  font-weight: 600;
  padding: 0.625rem 1.25rem;
  border-radius: var(--radius-full);
  border: 2px solid var(--color-white);
  cursor: pointer;
  transition: all var(--transition-base);
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
  box-shadow: var(--shadow-lg);
  z-index: 10;
}

.btn-fullscreen-overlay::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.2), transparent);
  opacity: 0;
  transition: opacity var(--transition-fast);
  border-radius: inherit;
}

.btn-fullscreen-overlay:hover {
  transform: translate(-50%, -50%) translateY(-4px) scale(1.05);
  box-shadow: var(--shadow-2xl), var(--shadow-glow-cyan);
}

.btn-fullscreen-overlay:hover::before {
  opacity: 1;
}

.btn-fullscreen-overlay:active {
  transform: translate(-50%, -50%) translateY(-2px) scale(1.02);
}

.timer-overlay {
  position: absolute;
  background: transparent;
  padding: 0;
  border: none;
  display: none;
  align-items: center;
  justify-content: center;
  cursor: grab;
  user-select: none;
  font-size: clamp(2.5rem, 8vw, 12rem);
}

.timer-overlay.visible {
  display: flex;
}

.timer-overlay.dragging {
  cursor: grabbing;
}

.timer-overlay span {
  font-family: 'JetBrains Mono', monospace;
  font-size: inherit;
  font-weight: 600;
  color: white;
  pointer-events: auto;
  white-space: nowrap;
  line-height: 1;
  position: relative;
  padding: var(--space-md);
  cursor: grab;
  user-select: none;
  -webkit-user-select: none;
  -moz-user-select: none;
  -ms-user-select: none;
}

.timer-overlay span:hover .corner-tl,
.timer-overlay span:hover .corner-tr,
.timer-overlay span:hover .corner-bl,
.timer-overlay span:hover .corner-br,
.timer-overlay span.active .corner-tl,
.timer-overlay span.active .corner-tr,
.timer-overlay span.active .corner-bl,
.timer-overlay span.active .corner-br {
  opacity: 1;
}

/* Corner borders - show on hover or when active */
.timer-overlay span .corner-tl,
.timer-overlay span .corner-tr,
.timer-overlay span .corner-bl,
.timer-overlay span .corner-br {
  position: absolute;
  width: 0.4em;
  height: 0.4em;
  border-color: white;
  border-style: solid;
  opacity: 0;
  transition: opacity 0.2s ease;
  pointer-events: auto;
}

.timer-overlay span .corner-tl {
  top: 0;
  left: 0;
  border-width: 0.06em 0 0 0.06em;
  border-radius: 0.12em 0 0 0;
  cursor: nwse-resize;
}

.timer-overlay span .corner-tr {
  top: 0;
  right: 0;
  border-width: 0.06em 0.06em 0 0;
  border-radius: 0 0.12em 0 0;
  cursor: nesw-resize;
}

.timer-overlay span .corner-bl {
  bottom: 0;
  left: 0;
  border-width: 0 0 0.06em 0.06em;
  border-radius: 0 0 0 0.12em;
  cursor: nesw-resize;
}

.timer-overlay span .corner-br {
  bottom: 0;
  right: 0;
  border-width: 0 0.06em 0.06em 0;
  border-radius: 0 0 0.12em 0;
  cursor: nwse-resize;
}

/* Larger touch targets for mobile portrait */
@media (max-width: 768px) and (orientation: portrait) {
  .timer-overlay span .corner-tl,
  .timer-overlay span .corner-tr,
  .timer-overlay span .corner-bl,
  .timer-overlay span .corner-br {
    width: 1.5em;
    height: 1.5em;
    z-index: 100;
  }

  .timer-overlay span .corner-tl {
    top: -0.75em;
    left: -0.75em;
    border-width: 0.15em 0 0 0.15em;
  }

  .timer-overlay span .corner-tr {
    top: -0.75em;
    right: -0.75em;
    border-width: 0.15em 0.15em 0 0;
  }

  .timer-overlay span .corner-bl {
    bottom: -0.75em;
    left: -0.75em;
    border-width: 0 0 0.15em 0.15em;
  }

  .timer-overlay span .corner-br {
    bottom: -0.75em;
    right: -0.75em;
    border-width: 0 0.15em 0.15em 0;
  }
}

/* Timer Positions */
.pos-top-left { top: var(--space-lg); left: var(--space-lg); }
.pos-top-right { top: var(--space-lg); right: var(--space-lg); }
.pos-bottom-left { bottom: var(--space-lg); left: var(--space-lg); }
.pos-bottom-right { bottom: var(--space-lg); right: var(--space-lg); }
.pos-center {
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  padding: var(--space-2xl);
}
.pos-center span { font-size: 4rem; }

/* ==========================================
   BUTTONS
   ========================================== */

.btn {
  font-family: 'Inter', sans-serif;
  font-size: 0.8125rem;
  font-weight: 600;
  padding: 0.625rem 1.25rem;
  border-radius: var(--radius-full);
  border: none;
  cursor: pointer;
  transition: all var(--transition-base);
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
  box-shadow: var(--shadow-md);
  position: relative;
  overflow: hidden;
}

.btn::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.2), transparent);
  opacity: 0;
  transition: opacity var(--transition-fast);
}

.btn:hover::before {
  opacity: 1;
}

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

.btn-primary {
  background: var(--gradient-primary);
  color: var(--color-white);
}

.btn-primary:hover {
  box-shadow: var(--shadow-lg), var(--shadow-glow-cyan);
  transform: translateY(-2px);
}

.btn-color {
  width: 3rem;
  height: 3rem;
  padding: 0;
  border-radius: var(--radius-full);
  font-weight: 600;
  color: var(--color-white);
  box-shadow: var(--shadow-lg);
  position: relative;
  overflow: hidden;
  border: 2px solid var(--color-white);
  font-size: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.btn-color::after {
  content: '';
  position: absolute;
  inset: -4px;
  border-radius: var(--radius-full);
  background: inherit;
  filter: blur(12px);
  opacity: 0;
  z-index: -1;
  transition: opacity var(--transition-base);
}

.btn-color:hover::after {
  opacity: 0.7;
}

.btn-color:hover {
  transform: scale(1.1);
  box-shadow: var(--shadow-2xl);
}

.btn-icon {
  width: 3rem;
  height: 3rem;
  padding: 0;
  border-radius: var(--radius-full);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--color-white);
  color: var(--color-gray-700);
  border: 2px solid var(--color-gray-200);
}

.btn-icon:hover {
  border-color: var(--color-purple);
  color: var(--color-purple);
  transform: scale(1.05);
}

.toolbar {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-md);
  align-items: center;
}

/* ==========================================
   INPUTS & FORMS
   ========================================== */

.input-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
}

.input-label {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-gray-700);
}

input[type="number"],
input[type="text"],
select {
  font-family: 'JetBrains Mono', monospace;
  font-size: 1.125rem;
  padding: 0.875rem 1rem;
  border: 2px solid var(--color-gray-200);
  border-radius: var(--radius-md);
  background: var(--color-white);
  color: var(--color-gray-800);
  transition: all var(--transition-fast);
  outline: none;
}

input[type="number"]:focus,
input[type="text"]:focus,
select:focus {
  border-color: var(--color-purple);
  box-shadow: 0 0 0 3px rgba(168, 85, 247, 0.1);
}

input[type="number"] {
  text-align: center;
  width: 5rem;
  font-weight: 600;
  font-size: 1.25rem;
}

select {
  cursor: pointer;
  padding-right: 2.5rem;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' fill='%23a855f7' viewBox='0 0 16 16'%3E%3Cpath d='M8 10.5l-4-4h8l-4 4z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 0.75rem center;
  appearance: none;
}

/* Color Picker */
.color-picker-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.375rem;
}

.color-label {
  font-size: 0.75rem;
  font-weight: 600;
  color: #1f2937;
  text-align: center;
  line-height: 1.2;
  min-height: 2rem;
  display: flex;
  align-items: center;
}

#picker {
  width: 3rem;
  height: 3rem;
  border: 2px solid var(--color-white);
  border-radius: var(--radius-full);
  cursor: pointer;
  box-shadow: var(--shadow-lg);
  transition: all var(--transition-base);
  overflow: hidden;
  padding: 0;
  -webkit-appearance: none;
  -moz-appearance: none;
  appearance: none;
}

/* Remove default padding/border from color picker */
#picker::-webkit-color-swatch-wrapper {
  padding: 0;
  border-radius: var(--radius-full);
}

#picker::-webkit-color-swatch {
  border: none;
  border-radius: var(--radius-full);
}

#picker::-moz-color-swatch {
  border: none;
  border-radius: var(--radius-full);
}

#picker:hover {
  transform: scale(1.1);
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.2), 0 0 0 4px rgba(168, 85, 247, 0.2);
}

/* Checkbox Toggle */
.toggle-label {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  cursor: pointer;
  font-size: 0.875rem;
  color: #1f2937;
  user-select: none;
}

input[type="checkbox"] {
  width: 1.25rem;
  height: 1.25rem;
  cursor: pointer;
  accent-color: var(--color-purple);
}

/* Toggle Switch (ON/OFF style) */
.toggle-switch-wrapper {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  justify-content: center;
}

.toggle-switch-label {
  font-size: 0.875rem;
  color: var(--color-gray-700);
  font-weight: 500;
}

.toggle-switch {
  position: relative;
  display: inline-block;
  width: 50px;
  height: 26px;
}

.toggle-switch input {
  opacity: 0;
  width: 0;
  height: 0;
}

.toggle-slider {
  position: absolute;
  cursor: pointer;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: #cbd5e1;
  transition: 0.3s;
  border-radius: 26px;
}

.toggle-slider:before {
  position: absolute;
  content: "";
  height: 20px;
  width: 20px;
  left: 3px;
  bottom: 3px;
  background-color: white;
  transition: 0.3s;
  border-radius: 50%;
}

input:checked + .toggle-slider {
  background: linear-gradient(135deg, #a855f7 0%, #ec4899 100%);
}

input:checked + .toggle-slider:before {
  transform: translateX(24px);
}

input:disabled + .toggle-slider {
  opacity: 0.5;
  cursor: not-allowed;
}

/* ==========================================
   TIMER DISPLAY
   ========================================== */

.timer-container {
  background: var(--color-white);
  border-radius: var(--radius-xl);
  padding: var(--space-2xl);
  box-shadow: var(--shadow-xl);
  border: 1px solid var(--color-gray-100);
}

.timer-inputs {
  display: flex;
  gap: var(--space-md);
  justify-content: center;
  align-items: center;
  margin-bottom: var(--space-lg);
}

.timer-separator {
  font-family: 'JetBrains Mono', monospace;
  font-size: 2rem;
  font-weight: 600;
  color: var(--color-gray-400);
}

#display {
  font-family: 'JetBrains Mono', monospace;
  font-size: 4.5rem;
  font-weight: 700;
  text-align: center;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin: var(--space-lg) 0;
  line-height: 1.2;
}

.timer-controls {
  display: flex;
  gap: var(--space-md);
  justify-content: center;
  margin-bottom: var(--space-lg);
}

.sound-selector-wrapper {
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
  align-items: center;
  margin-bottom: var(--space-lg);
}

.sound-selector-wrapper .input-label {
  font-size: 0.75rem;
  font-weight: 500;
  color: #1f2937;
}

.sound-selector-wrapper select {
  width: 100%;
  max-width: 300px;
  text-align: center;
  font-size: 0.875rem;
}

.timer-options {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
  padding-top: var(--space-lg);
  border-top: 2px solid var(--color-gray-100);
}

.position-selector-wrapper {
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
  align-items: center;
}

.position-selector-wrapper .input-label {
  font-size: 0.75rem;
  font-weight: 500;
  color: #1f2937;
}

.position-selector-wrapper select {
  width: 100%;
  max-width: 300px;
  text-align: center;
  font-size: 0.875rem;
}

.option-row {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-md);
  align-items: center;
  justify-content: center;
}

.keyboard-hint {
  text-align: center;
  font-size: 0.75rem;
  color: #4b5563;
  margin-top: var(--space-md);
  padding: var(--space-sm);
  background: var(--color-gray-50);
  border-radius: var(--radius-md);
}

.kbd {
  display: inline-block;
  padding: 0.125rem 0.375rem;
  background: var(--color-white);
  border: 1px solid var(--color-gray-300);
  border-radius: 0.25rem;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.75rem;
  font-weight: 600;
  box-shadow: var(--shadow-sm);
}

/* ==========================================
   ICONS (Using Unicode Symbols)
   ========================================== */

.icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-style: normal;
}

.icon-fullscreen::before { content: '⛶'; }
.icon-play::before { content: '▶'; }
.icon-pause::before { content: '⏸'; }
.icon-reset::before { content: '↻'; }
.icon-timer::before { content: '⏱'; }
.icon-color::before { content: '🎨'; }
.icon-sound::before { content: '🔔'; }
.icon-position::before { content: '📍'; }

/* ==========================================
   UTILITIES
   ========================================== */

.text-center { text-align: center; }
.mt-sm { margin-top: var(--space-sm); }
.mt-md { margin-top: var(--space-md); }
.mt-lg { margin-top: var(--space-lg); }
.mb-sm { margin-bottom: var(--space-sm); }
.mb-md { margin-bottom: var(--space-md); }
.mb-lg { margin-bottom: var(--space-lg); }

/* ==========================================
   ANIMATIONS
   ========================================== */

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.8; }
}

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

.animate-fadeIn {
  animation: fadeIn var(--transition-slow) ease;
}

/* ==========================================
   RESPONSIVE DESIGN
   ========================================== */

@media (max-width: 768px) {
  .heading-primary {
    font-size: 2rem;
  }

  .heading-secondary {
    font-size: 1.5rem;
  }

  #display {
    font-size: 3rem;
  }

  .timer-inputs input[type="number"] {
    width: 4rem;
    font-size: 1rem;
  }

  .toolbar {
    justify-content: center;
  }

  .timer-overlay span {
    font-size: 2rem;
  }

  .pos-center span {
    font-size: 2.5rem;
  }

  .btn-fullscreen-overlay {
    padding: 0.5rem 1rem;
    font-size: 0.75rem;
  }
}

@media (max-width: 480px) {
  .container {
    padding: var(--space-md);
  }

  .heading-primary {
    font-size: 1.75rem;
  }

  #display {
    font-size: 2.5rem;
  }

  .btn {
    padding: 0.4375rem 0.875rem;
    font-size: 0.6875rem;
  }

  .btn-fullscreen-overlay {
    padding: 0.4375rem 0.875rem;
    font-size: 0.6875rem;
  }
}

/* ==========================================
   ACCESSIBILITY
   ========================================== */

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* Focus visible for keyboard navigation */
*:focus-visible {
  outline: 3px solid var(--color-purple);
  outline-offset: 2px;
}

button:focus-visible,
input:focus-visible,
select:focus-visible {
  outline: 2px solid var(--color-purple);
  outline-offset: 2px;
}

/* ==========================================
   COOKIE CONSENT BANNER & FLOATING ICON
   ========================================== */

/* Floating Cookie Icon - Bottom Left */
.cookie-float-icon {
  position: fixed;
  bottom: 1.5rem;
  left: 1.5rem;
  z-index: 9998;
  cursor: pointer;
  transition: all var(--transition-base);
}

.cookie-icon-button {
  width: 48px;
  height: 48px;
  background: linear-gradient(135deg, #a855f7 0%, #ec4899 100%);
  border-radius: 50%;
  border: 2px solid rgba(255, 255, 255, 0.3);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 12px rgba(168, 85, 247, 0.4);
  transition: all var(--transition-base);
  position: relative;
}

.cookie-icon-button:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 16px rgba(168, 85, 247, 0.5);
  border-color: rgba(255, 255, 255, 0.5);
}

.cookie-icon-button svg {
  width: 22px;
  height: 22px;
  fill: white;
}

/* Cookie Icon Notification Badge */
.cookie-notification-badge {
  position: absolute;
  top: -8px;
  right: -8px;
  background: #ef4444;
  color: white;
  border-radius: 50%;
  width: 20px;
  height: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
  font-weight: 700;
  animation: pulse-badge 2s infinite;
}

@keyframes pulse-badge {
  0%, 100% {
    transform: scale(1);
  }
  50% {
    transform: scale(1.1);
  }
}

/* Cookie Banner - First Visit */
.cookie-banner {
  position: fixed;
  bottom: 1.5rem;
  left: 1.5rem;
  background: white;
  border-radius: 1rem;
  padding: 1.5rem;
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.2);
  max-width: 380px;
  z-index: 9999;
  display: none;
  flex-direction: column;
  gap: 1rem;
  opacity: 0;
  transform: translateY(20px);
  transition: all var(--transition-slow);
}

.cookie-banner.show {
  opacity: 1;
  transform: translateY(0);
}

.cookie-banner-header {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.cookie-banner-icon {
  width: 40px;
  height: 40px;
  background: var(--gradient-primary);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.cookie-banner-icon svg {
  width: 22px;
  height: 22px;
  fill: white;
}

.cookie-banner-title {
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--color-gray-900);
  margin: 0;
}

.cookie-banner-text {
  font-size: 0.875rem;
  color: var(--color-gray-600);
  line-height: 1.6;
  margin: 0;
}

.cookie-banner-text a {
  color: var(--color-purple);
  text-decoration: none;
  font-weight: 600;
}

.cookie-banner-text a:hover {
  text-decoration: underline;
}

.cookie-banner-actions {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.cookie-btn {
  flex: 1;
  min-width: 100px;
  padding: 0.625rem 1rem;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 0.875rem;
  cursor: pointer;
  border: none;
  transition: all var(--transition-base);
  text-align: center;
}

.cookie-btn-accept {
  background: var(--gradient-primary);
  color: white;
  box-shadow: 0 2px 8px rgba(168, 85, 247, 0.3);
}

.cookie-btn-accept:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(168, 85, 247, 0.4);
}

.cookie-btn-reject {
  background: white;
  color: var(--color-gray-700);
  border: 1px solid var(--color-gray-300);
}

.cookie-btn-reject:hover {
  background: var(--color-gray-50);
}

.cookie-btn-customize {
  background: white;
  color: var(--color-purple);
  border: 1px solid var(--color-purple);
}

.cookie-btn-customize:hover {
  background: rgba(168, 85, 247, 0.05);
}

/* Mobile Responsive */
@media (max-width: 768px) {
  .cookie-banner {
    left: 1rem;
    right: 1rem;
    bottom: 1rem;
    max-width: none;
  }

  .cookie-float-icon {
    bottom: 1rem;
    left: 1rem;
  }

  .cookie-banner-actions {
    flex-direction: column;
  }

  .cookie-btn {
    min-width: 100%;
  }
}

/* ==========================================
   MOBILE HAMBURGER MENU & LANGUAGE SELECTOR
   ========================================== */

/* Hide mobile elements by default (desktop) */
.mobile-controls {
  display: none;
}

.mobile-lang-btn {
  display: none;
}

.mobile-lang-menu {
  display: none;
}

.hamburger-menu {
  display: none;
  flex-direction: column;
  justify-content: space-around;
  width: 2rem;
  height: 2rem;
  background: transparent;
  border: none;
  cursor: pointer;
  padding: 0;
  z-index: 1002;
  position: relative;
}

.hamburger-line {
  width: 2rem;
  height: 0.25rem;
  background: var(--color-gray-700);
  border-radius: 0.25rem;
  transition: all 0.3s ease;
  transform-origin: center;
}

/* Hamburger animation when menu is open */
.hamburger-menu.active .hamburger-line:nth-child(1) {
  transform: translateY(0.625rem) rotate(45deg);
}

.hamburger-menu.active .hamburger-line:nth-child(2) {
  opacity: 0;
}

.hamburger-menu.active .hamburger-line:nth-child(3) {
  transform: translateY(-0.625rem) rotate(-45deg);
}

/* Mobile Navigation */
@media (max-width: 768px) {
  .header-nav-container {
    flex-direction: row;
    flex-wrap: nowrap;
    padding: 1rem 1.5rem;
  }

  .site-title {
    flex: 1;
  }

  .site-title-link {
    font-size: 1.1rem;
  }

  /* Show mobile controls */
  .mobile-controls {
    display: flex;
    align-items: center;
    gap: 1rem;
  }

  .mobile-lang-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    background: transparent;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    padding: 0.5rem;
    z-index: 1001;
    transition: transform 0.2s ease;
  }

  .mobile-lang-btn:hover {
    transform: scale(1.1);
  }

  /* Hide mobile controls when any menu is open */
  .mobile-controls.menu-open .mobile-lang-btn,
  .mobile-controls.menu-open .hamburger-menu {
    opacity: 0;
    pointer-events: none;
  }

  .mobile-lang-menu {
    display: block;
    position: fixed;
    top: 0;
    right: -100%;
    width: 280px;
    height: 100vh;
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(10px);
    box-shadow: -5px 0 20px rgba(0, 0, 0, 0.1);
    padding: 0;
    transition: right 0.3s ease;
    overflow-y: auto;
    z-index: 1000;
  }

  .mobile-lang-menu.active {
    right: 0;
  }

  .mobile-lang-list {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    flex-direction: column;
    justify-content: flex-start;
  }

  .mobile-lang-list li {
    border-bottom: 1px solid rgba(229, 231, 235, 0.3);
  }

  .mobile-lang-list li:last-child {
    border-bottom: none;
  }

  .mobile-lang-list a {
    display: block;
    padding: 1rem 1.5rem;
    color: var(--color-gray-700);
    text-decoration: none;
    font-size: 0.95rem;
    transition: all var(--transition-base);
  }

  .mobile-lang-list a:hover {
    background: linear-gradient(135deg, rgba(168, 85, 247, 0.1), rgba(6, 182, 212, 0.1));
    color: var(--color-purple);
    padding-left: 2rem;
  }

  .hamburger-menu {
    display: flex;
    z-index: 1001;
  }

  /* Hide language dropdown in mobile nav menu */
  .nav-menu .lang-dropdown {
    display: none;
  }

  .nav-menu {
    position: fixed;
    top: 0;
    right: -100%;
    width: 280px;
    height: 100vh;
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(10px);
    box-shadow: -5px 0 20px rgba(0, 0, 0, 0.1);
    padding: 0;
    transition: right 0.3s ease;
    overflow-y: auto;
    z-index: 1000;
  }

  .nav-menu.active {
    right: 0;
  }

  .nav-list {
    flex-direction: column;
    align-items: stretch;
    width: 100%;
    gap: 0;
    padding: 0;
    margin: 0;
    justify-content: flex-start;
  }

  .nav-item {
    width: 100%;
  }

  .nav-link {
    padding: 0.875rem 1.5rem;
    justify-content: flex-start;
    border-bottom: 1px solid rgba(229, 231, 235, 0.3);
    font-size: 0.95rem;
  }

  .nav-item:last-child {
    border-bottom: none;
  }
}