/* Modern Ambient Glassmorphism Design System for Trip Countdown App */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=Montserrat:wght@400;600;700;800;900&family=Outfit:wght@300;400;500;600;700;800;900&family=Playfair+Display:ital,wght@0,600;0,800;1,600&display=swap');

:root {
  /* Color Tokens */
  --bg-dark: #090d16;
  --text-main: #ffffff;
  --text-muted: rgba(255, 255, 255, 0.75);
  --text-subtle: rgba(255, 255, 255, 0.5);

  /* Glassmorphism Tokens */
  --glass-bg: rgba(15, 23, 42, 0.55);
  --glass-border: rgba(255, 255, 255, 0.18);
  --glass-blur: 16px;
  --glass-shadow: 0 20px 50px rgba(0, 0, 0, 0.45);
  --glass-card-bg: rgba(255, 255, 255, 0.08);

  /* Accent Themes */
  --primary-accent: #38bdf8;
  --primary-gradient: linear-gradient(135deg, #38bdf8 0%, #818cf8 100%);
  --accent-glow: rgba(56, 189, 248, 0.35);

  /* Fonts */
  --font-main: 'Outfit', 'Inter', sans-serif;
  --font-heading: 'Montserrat', sans-serif;
  --font-serif: 'Playfair Display', serif;

  /* Layout */
  --radius-sm: 10px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --radius-xl: 32px;

  /* Customizer Variables */
  --overlay-opacity: 0.45;
  --overlay-blur: 0px;
}

/* Base Styles */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  -webkit-tap-highlight-color: transparent;
}

html, body {
  width: 100%;
  height: 100%;
  overflow-x: hidden;
  font-family: var(--font-main);
  background-color: var(--bg-dark);
  color: var(--text-main);
}

/* Background Image Layer */
.bg-layer {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  transition: background-image 0.8s ease-in-out, filter 0.5s ease;
  z-index: 1;
}

/* Dark Ambient Gradient Overlay */
.overlay-layer {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background: radial-gradient(circle at center, rgba(15, 23, 42, 0.2) 0%, rgba(9, 13, 22, 0.85) 100%),
              linear-gradient(to bottom, rgba(0, 0, 0, 0.3) 0%, rgba(0, 0, 0, 0.7) 100%);
  opacity: var(--overlay-opacity);
  backdrop-filter: blur(var(--overlay-blur));
  z-index: 2;
  transition: opacity 0.3s ease, backdrop-filter 0.3s ease;
}

/* App Container */
.app-container {
  position: relative;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  align-items: center;
  padding: 1.5rem 1rem 2rem 1rem;
  z-index: 10;
  max-width: 1200px;
  margin: 0 auto;
}

/* Top Bar Navigation */
.header-bar {
  width: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
}

.brand-badge {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  background: var(--glass-bg);
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
  border: 1px solid var(--glass-border);
  padding: 0.5rem 1rem;
  border-radius: 999px;
  box-shadow: var(--glass-shadow);
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.5px;
  text-transform: uppercase;
}

.brand-badge svg {
  width: 18px;
  height: 18px;
  color: var(--primary-accent);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

/* Glass Buttons */
.btn-glass {
  background: var(--glass-bg);
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
  border: 1px solid var(--glass-border);
  color: var(--text-main);
  padding: 0.6rem 1.1rem;
  border-radius: 999px;
  font-family: var(--font-main);
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}

.btn-glass:hover {
  background: rgba(255, 255, 255, 0.15);
  border-color: rgba(255, 255, 255, 0.35);
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.3);
}

.btn-glass:active {
  transform: translateY(0);
}

.btn-glass.btn-primary {
  background: var(--primary-gradient);
  border: none;
  color: #0f172a;
  font-weight: 700;
  box-shadow: 0 8px 25px var(--accent-glow);
}

.btn-glass.btn-primary:hover {
  filter: brightness(1.1);
  box-shadow: 0 12px 30px var(--accent-glow);
}

.btn-icon-only {
  padding: 0.6rem;
  border-radius: 50%;
}

/* Main Hero Countdown Container */
.hero-section {
  width: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  margin: auto 0;
  padding: 2rem 0;
}

.trip-title-wrapper {
  margin-bottom: 1.5rem;
  animation: fadeInDown 0.8s ease-out;
}

.destination-chip {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  background: rgba(255, 255, 255, 0.12);
  border: 1px solid rgba(255, 255, 255, 0.25);
  padding: 0.35rem 0.9rem;
  border-radius: 999px;
  font-size: 0.85rem;
  font-weight: 500;
  letter-spacing: 1px;
  text-transform: uppercase;
  margin-bottom: 0.75rem;
  color: #bae6fd;
}

.trip-title {
  font-family: var(--font-heading);
  font-size: clamp(2rem, 5vw, 4rem);
  font-weight: 900;
  line-height: 1.1;
  letter-spacing: -1px;
  text-shadow: 0 4px 30px rgba(0, 0, 0, 0.7);
  background: linear-gradient(180deg, #ffffff 0%, #e2e8f0 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.trip-subtitle {
  font-size: clamp(1rem, 2.5vw, 1.25rem);
  color: var(--text-muted);
  margin-top: 0.5rem;
  font-weight: 400;
}

/* Countdown Grid */
.countdown-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1rem;
  width: 100%;
  max-width: 800px;
  margin: 1rem 0 2rem 0;
  perspective: 1000px;
}

@media (max-width: 640px) {
  .countdown-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 0.75rem;
  }
}

/* Countdown Glass Card */
.countdown-card {
  background: var(--glass-bg);
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  padding: 1.5rem 1rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  box-shadow: var(--glass-shadow);
  transition: transform 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
  position: relative;
  overflow: hidden;
}

.countdown-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: -50%;
  width: 200%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.05), transparent);
  transform: rotate(30deg);
  transition: 0.5s;
  pointer-events: none;
}

.countdown-card:hover {
  transform: translateY(-4px) scale(1.02);
  border-color: rgba(255, 255, 255, 0.35);
  box-shadow: 0 25px 60px rgba(0, 0, 0, 0.5);
}

.num-display {
  font-family: var(--font-heading);
  font-size: clamp(2.5rem, 6vw, 4.5rem);
  font-weight: 800;
  line-height: 1;
  color: #ffffff;
  text-shadow: 0 0 20px var(--accent-glow);
  transition: all 0.2s ease;
}

.num-label {
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  color: var(--text-muted);
  margin-top: 0.5rem;
}

/* Milliseconds Pulse Badge */
.ms-container {
  margin-top: 0.5rem;
  font-family: monospace;
  font-size: 0.9rem;
  color: var(--primary-accent);
  opacity: 0.85;
}

/* Bottom Action Dock */
.bottom-dock {
  width: 100%;
  max-width: 600px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  background: var(--glass-bg);
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
  border: 1px solid var(--glass-border);
  padding: 0.75rem 1.25rem;
  border-radius: 999px;
  box-shadow: var(--glass-shadow);
  flex-wrap: wrap;
}

.dock-btn {
  background: transparent;
  border: none;
  color: var(--text-main);
  font-family: var(--font-main);
  font-size: 0.85rem;
  font-weight: 600;
  padding: 0.5rem 0.9rem;
  border-radius: 999px;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 0.4rem;
  transition: all 0.2s ease;
}

.dock-btn:hover {
  background: rgba(255, 255, 255, 0.12);
  color: var(--primary-accent);
}

.dock-btn svg {
  width: 18px;
  height: 18px;
}

/* Modals & Drawers */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background: rgba(0, 0, 0, 0.75);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1rem;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
}

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

.modal-content {
  background: #0f172a;
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-xl);
  width: 100%;
  max-width: 650px;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: 0 30px 90px rgba(0, 0, 0, 0.8);
  padding: 2rem;
  position: relative;
  transform: scale(0.95) translateY(20px);
  transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  color: var(--text-main);
}

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

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1.5rem;
}

.modal-title {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.modal-close {
  background: rgba(255, 255, 255, 0.1);
  border: none;
  color: var(--text-main);
  width: 36px;
  height: 36px;
  border-radius: 50%;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.2s ease;
}

.modal-close:hover {
  background: rgba(255, 255, 255, 0.25);
}

/* Form Styles */
.form-group {
  margin-bottom: 1.25rem;
}

.form-label {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.form-input, .form-select, .form-textarea {
  width: 100%;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.15);
  color: #fff;
  padding: 0.8rem 1rem;
  border-radius: var(--radius-md);
  font-family: var(--font-main);
  font-size: 0.95rem;
  transition: border-color 0.2s ease, background 0.2s ease;
}

.form-input:focus, .form-select:focus, .form-textarea:focus {
  outline: none;
  border-color: var(--primary-accent);
  background: rgba(255, 255, 255, 0.1);
  box-shadow: 0 0 15px var(--accent-glow);
}

.form-select option {
  background: #0f172a;
  color: #fff;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

@media (max-width: 500px) {
  .form-row {
    grid-template-columns: 1fr;
  }
}

/* Unsplash Gallery & Presets */
.preset-chips {
  display: flex;
  gap: 0.5rem;
  overflow-x: auto;
  padding-bottom: 0.5rem;
  margin-bottom: 1rem;
  scrollbar-width: thin;
}

.preset-chip {
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.15);
  color: var(--text-main);
  padding: 0.4rem 0.8rem;
  border-radius: 999px;
  font-size: 0.8rem;
  font-weight: 500;
  white-space: nowrap;
  cursor: pointer;
  transition: all 0.2s ease;
}

.preset-chip:hover, .preset-chip.active {
  background: var(--primary-gradient);
  border-color: transparent;
  color: #0f172a;
  font-weight: 700;
}

.unsplash-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(130px, 1fr));
  gap: 0.75rem;
  max-height: 240px;
  overflow-y: auto;
  padding-right: 0.25rem;
}

.unsplash-card {
  height: 90px;
  border-radius: var(--radius-sm);
  background-size: cover;
  background-position: center;
  cursor: pointer;
  position: relative;
  border: 2px solid transparent;
  transition: transform 0.2s ease, border-color 0.2s ease;
  overflow: hidden;
}

.unsplash-card:hover {
  transform: scale(1.05);
  border-color: var(--primary-accent);
}

.unsplash-card.selected {
  border-color: var(--primary-accent);
  box-shadow: 0 0 15px var(--accent-glow);
}

.unsplash-author {
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  background: rgba(0, 0, 0, 0.65);
  font-size: 0.65rem;
  padding: 0.2rem 0.4rem;
  color: #fff;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* iMessage / Messaging App Card Generator & Simulator */
.imessage-simulator-box {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--radius-lg);
  padding: 1.25rem;
  margin-top: 1rem;
}

.imessage-header {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-muted);
  margin-bottom: 1rem;
}

.chat-bubble-container {
  display: flex;
  justify-content: flex-end;
  margin-bottom: 1rem;
}

.chat-bubble {
  max-width: 340px;
  background: #007aff; /* Apple iMessage Blue */
  color: #fff;
  border-radius: 20px 20px 4px 20px;
  padding: 0.75rem;
  box-shadow: 0 4px 15px rgba(0, 122, 255, 0.3);
}

.chat-preview-card {
  background: #1c1c1e;
  border-radius: 14px;
  overflow: hidden;
  margin-bottom: 0.5rem;
}

.chat-preview-img {
  width: 100%;
  height: 150px;
  object-fit: cover;
}

.chat-preview-info {
  padding: 0.6rem 0.75rem;
}

.chat-preview-title {
  font-size: 0.9rem;
  font-weight: 700;
  line-height: 1.2;
}

.chat-preview-subtitle {
  font-size: 0.75rem;
  color: #8e8e93;
  margin-top: 0.2rem;
}

.canvas-export-wrapper {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
  margin-top: 1.5rem;
}

#shareCanvas {
  max-width: 100%;
  height: auto;
  border-radius: var(--radius-md);
  border: 1px solid var(--glass-border);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
}

/* Toast Notifications */
.toast-container {
  position: fixed;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%);
  z-index: 1000;
  pointer-events: none;
}

.toast {
  background: rgba(15, 23, 42, 0.95);
  border: 1px solid var(--primary-accent);
  color: #fff;
  padding: 0.75rem 1.5rem;
  border-radius: 999px;
  font-size: 0.9rem;
  font-weight: 600;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
  display: flex;
  align-items: center;
  gap: 0.5rem;
  animation: slideUpToast 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

@keyframes slideUpToast {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes fadeInDown {
  from { opacity: 0; transform: translateY(-20px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Celebration Confetti Overlay Canvas */
#confettiCanvas {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  pointer-events: none;
  z-index: 99;
}