/* ==============================================
   GIFT CARD LANDING PAGE - DARK THEME UI
   Modern glassmorphism design system
   ============================================== */

/* ---------- CSS Variables ---------- */
:root {
  /* Colors - Dark Theme */
  --bg-primary: #0a0a0f;
  --bg-secondary: #12121a;
  --bg-card: rgba(255, 255, 255, 0.03);
  --bg-card-hover: rgba(255, 255, 255, 0.08);

  /* Accent Colors */
  --accent-primary: #6366f1;
  --accent-secondary: #8b5cf6;
  --primary: var(--accent-primary);
  --secondary: var(--accent-secondary);
  --accent-gradient: linear-gradient(135deg, #6366f1, #8b5cf6);
  --glow-primary: rgba(99, 102, 241, 0.4);
  --glow-secondary: rgba(139, 92, 246, 0.3);

  /* Brand Colors */
  --xbox-green: #107c10;
  --steam-blue: #1b2838;
  --playstation-blue: #003087;
  --itunes-pink: #fc3c44;
  --spotify-green: #1db954;
  --google-play: #01875f;
  --amazon-orange: #ff9900;
  --roblox-red: #e31b23;

  /* Text */
  --text-primary: #ffffff;
  --text-secondary: #a1a1aa;
  --text-muted: #71717a;

  /* UI */
  --border-color: rgba(255, 255, 255, 0.1);
  --success: #10b981;
  --warning: #f59e0b;
  --error: #ef4444;

  /* Spacing */
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  --spacing-2xl: 3rem;
  --spacing-3xl: 4rem;

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

  /* 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);
  --shadow-glow: 0 0 30px var(--glow-primary);

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-normal: 300ms ease;
  --transition-slow: 500ms ease;
}

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

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

body {
  font-family:
    "Inter",
    "Segoe UI",
    -apple-system,
    BlinkMacSystemFont,
    sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  min-height: 100vh;
  overflow-x: hidden;
}

a {
  color: inherit;
  text-decoration: none;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
}

/* ---------- Typography ---------- */
h1,
h2,
h3,
h4,
h5,
h6 {
  font-weight: 700;
  line-height: 1.2;
}

h1 {
  font-size: clamp(2rem, 5vw, 3.5rem);
}
h2 {
  font-size: clamp(1.5rem, 4vw, 2.5rem);
}
h3 {
  font-size: clamp(1.25rem, 3vw, 1.75rem);
}

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

.text-secondary {
  color: var(--text-secondary);
}

.text-center {
  text-align: center;
}

/* ---------- Layout ---------- */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-lg);
}

.section {
  padding: var(--spacing-xl) 0;
}

/* ---------- Glassmorphism Card ---------- */
.glass-card {
  background: var(--bg-card);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  transition: all var(--transition-normal);
}

.glass-card:hover {
  background: var(--bg-card-hover);
  transform: translateY(-4px);
  box-shadow: var(--shadow-glow);
}

/* ---------- Gift Card Grid ---------- */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: var(--spacing-lg);
  max-width: 800px;
  margin: 0 auto;
}

.gift-card {
  aspect-ratio: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-lg);
  cursor: pointer;
  position: relative;
  overflow: hidden;
}

.gift-card::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(
    circle at center,
    var(--card-glow, var(--glow-primary)) 0%,
    transparent 70%
  );
  opacity: 0;
  transition: opacity var(--transition-normal);
}

.gift-card:hover::before {
  opacity: 0.3;
}

.gift-card img {
  width: 80px;
  height: 80px;
  object-fit: contain;
  transition: transform var(--transition-normal);
  position: relative;
  z-index: 1;
}

.gift-card:hover img {
  transform: scale(1.1);
}

.gift-card span {
  margin-top: var(--spacing-sm);
  font-weight: 600;
  font-size: 0.875rem;
  color: var(--text-secondary);
  transition: color var(--transition-normal);
  position: relative;
  z-index: 1;
}

.gift-card:hover span {
  color: var(--text-primary);
}

/* Brand glow colors */
.gift-card[data-brand="xbox"] {
  --card-glow: rgba(16, 124, 16, 0.5);
}
.gift-card[data-brand="steam"] {
  --card-glow: rgba(27, 40, 56, 0.5);
}
.gift-card[data-brand="playstation"] {
  --card-glow: rgba(0, 48, 135, 0.5);
}
.gift-card[data-brand="itunes"] {
  --card-glow: rgba(252, 60, 68, 0.5);
}
.gift-card[data-brand="spotify"] {
  --card-glow: rgba(29, 185, 84, 0.5);
}
.gift-card[data-brand="google"] {
  --card-glow: rgba(1, 135, 95, 0.5);
}
.gift-card[data-brand="amazon"] {
  --card-glow: rgba(255, 153, 0, 0.5);
}
.gift-card[data-brand="roblox"] {
  --card-glow: rgba(227, 27, 35, 0.5);
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-md) var(--spacing-xl);
  font-weight: 600;
  font-size: 1rem;
  border-radius: var(--radius-full);
  transition: all var(--transition-normal);
}

.btn-primary {
  background: var(--accent-gradient);
  color: var(--text-primary);
  box-shadow: 0 4px 15px var(--glow-primary);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 25px var(--glow-primary);
}

.btn-secondary {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  color: var(--text-primary);
}

.btn-secondary:hover {
  background: var(--bg-card-hover);
  border-color: var(--accent-primary);
}

.btn-lg {
  padding: var(--spacing-lg) var(--spacing-2xl);
  font-size: 1.125rem;
}

/* ---------- Value Selector ---------- */
.value-selector {
  display: flex;
  gap: var(--spacing-lg);
  justify-content: center;
  flex-wrap: wrap;
}

.value-card {
  width: 160px;
  height: 200px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  position: relative;
}

.value-card::after {
  content: "";
  position: absolute;
  inset: -2px;
  border-radius: calc(var(--radius-lg) + 2px);
  background: var(--accent-gradient);
  opacity: 0;
  z-index: -1;
  transition: opacity var(--transition-normal);
}

.value-card.active::after,
.value-card:hover::after {
  opacity: 1;
}

.value-card .brand-logo {
  width: 60px;
  height: 60px;
  margin-bottom: var(--spacing-md);
}

.value-card .value {
  font-size: 1.75rem;
  font-weight: 700;
}

/* ---------- Progress Bar ---------- */
.progress-container {
  padding: var(--spacing-xl);
}

.progress-steps {
  display: flex;
  justify-content: space-between;
  margin-bottom: var(--spacing-md);
  position: relative;
}

.progress-step {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--spacing-xs);
  z-index: 1;
}

.step-circle {
  width: 32px;
  height: 32px;
  border-radius: var(--radius-full);
  background: var(--bg-secondary);
  border: 2px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.875rem;
  font-weight: 600;
  transition: all var(--transition-normal);
}

.progress-step.active .step-circle,
.progress-step.completed .step-circle {
  background: var(--accent-gradient);
  border-color: transparent;
}

.progress-step.completed .step-circle::after {
  content: "✓";
}

.step-label {
  font-size: 0.75rem;
  color: var(--text-muted);
  transition: color var(--transition-normal);
}

.progress-step.active .step-label {
  color: var(--text-primary);
}

.progress-bar {
  height: 4px;
  background: var(--bg-secondary);
  border-radius: var(--radius-full);
  overflow: hidden;
  margin-top: -20px;
  margin-bottom: var(--spacing-lg);
}

.progress-fill {
  height: 100%;
  background: var(--accent-gradient);
  border-radius: var(--radius-full);
  width: 0%;
  transition: width var(--transition-slow);
}

/* ---------- Modal ---------- */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.8);
  backdrop-filter: blur(8px);
  display: flex;
  align-items: center; /* Center modal on screen */
  justify-content: center;
  padding: var(--spacing-lg);
  overflow-y: auto; /* Allow scroll if modal is taller than viewport */
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-normal);
  z-index: 10000; /* Higher than status bar */
}

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

.modal {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  padding: var(--spacing-2xl);
  max-width: 480px;
  width: 100%;
  max-height: calc(100vh - 40px); /* Prevent modal from exceeding viewport */
  max-height: calc(100dvh - 40px); /* Dynamic viewport height for mobile */
  overflow-y: auto; /* Scroll inside modal if content is too tall */
  transform: scale(0.9) translateY(20px);
  transition: transform var(--transition-normal);
}

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

/* ---------- Modal Brand Box ---------- */
.modal-brand-box {
  width: 120px;
  height: 170px;
  margin: 0 auto var(--spacing-lg);
  position: relative;
  display: block;
}

.modal-brand-box .card-3d-container {
  width: 120px;
  height: 170px;
  position: relative;
}

.modal-brand-box .gift-card-3d {
  position: relative;
  width: 100%;
  height: 100%;
}

.modal-brand-box .card-brand-name {
  font-size: 14px;
  letter-spacing: 1px;
  margin-top: 10px;
}

.modal-brand-box .card-logo {
  width: 60px;
  height: 60px;
}

.modal-brand-box .card-value {
  font-size: 20px;
}

.modal-brand-box .card-barcode {
  display: none;
}

.modal-brand-box .card-content {
  padding: 20px 15px;
}

/* ---------- Gift Code Display ---------- */
.code-display {
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: var(--spacing-lg);
  text-align: center;
  font-family: "Courier New", monospace;
  font-size: 1.25rem;
  font-weight: 600;
  letter-spacing: 2px;
  color: var(--success);
  margin: var(--spacing-lg) 0;
}

/* ---------- Animations ---------- */
@keyframes pulse {
  0%,
  100% {
    opacity: 1;
  }
  50% {
    opacity: 0.5;
  }
}

@keyframes glow {
  0%,
  100% {
    box-shadow: 0 0 20px var(--glow-primary);
  }
  50% {
    box-shadow:
      0 0 40px var(--glow-primary),
      0 0 60px var(--glow-secondary);
  }
}

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

.animate-pulse {
  animation: pulse 2s infinite;
}

.animate-glow {
  animation: glow 2s infinite;
}

.animate-float {
  animation: float 3s ease-in-out infinite;
}

/* ---------- Header ---------- */
.header {
  padding: var(--spacing-xl) 0;
  text-align: center;
}

.header .container {
  display: flex;
  justify-content: center;
  align-items: center;
}

.logo {
  font-size: 2rem;
  font-weight: 800;
  letter-spacing: -1px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.logo img {
  height: 150px;
  width: auto;
  transition: transform var(--transition-normal);
}

.logo img:hover {
  transform: scale(1.05);
}

/* ---------- Hero Section ---------- */
.hero {
  padding: var(--spacing-xl) 0;
  text-align: center;
}

.hero h1 {
  margin-bottom: var(--spacing-md);
}

.hero p {
  color: var(--text-secondary);
  font-size: 1.125rem;
  max-width: 600px;
  margin: 0 auto var(--spacing-xl);
}

/* ---------- Footer ---------- */
.footer {
  padding: var(--spacing-xl) 0;
  text-align: center;
  color: var(--text-muted);
  font-size: 0.875rem;
  border-top: 1px solid var(--border-color);
}

/* ---------- Responsive ---------- */
@media (max-width: 768px) {
  .card-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-md);
  }

  .gift-card img {
    width: 60px;
    height: 60px;
  }

  .value-selector {
    flex-direction: column;
    align-items: center;
  }

  .value-card {
    width: 100%;
    max-width: 200px;
    height: 160px;
  }

  .modal {
    padding: var(--spacing-xl);
    max-height: calc(100vh - 32px);
    max-height: calc(100dvh - 32px); /* Dynamic viewport height for mobile */
    overflow-y: auto;
  }

  .modal-overlay {
    padding: var(--spacing-md);
  }

  /* Modal brand box smaller on tablet */
  .modal-brand-box {
    width: 100px;
    height: 140px;
  }

  .modal-brand-box .card-3d-container {
    width: 100px;
    height: 140px;
  }

  .modal-brand-box .card-brand-name {
    font-size: 12px;
  }

  .modal-brand-box .card-logo {
    width: 50px;
    height: 50px;
  }

  .modal-brand-box .card-value {
    font-size: 16px;
  }

  .modal-brand-box .card-content {
    padding: 15px 12px;
  }

  /* Progress steps smaller */
  .progress-container {
    padding: var(--spacing-md);
  }

  .step-circle {
    width: 28px;
    height: 28px;
    font-size: 0.75rem;
  }

  .step-label {
    font-size: 0.625rem;
  }
}

@media (max-width: 480px) {
  :root {
    --spacing-lg: 1rem;
    --spacing-xl: 1.5rem;
    --spacing-2xl: 2rem;
    --spacing-3xl: 3rem;
  }

  .gift-card {
    padding: var(--spacing-md);
  }

  .gift-card img {
    width: 50px;
    height: 50px;
  }

  /* Modal extra small screen fixes */
  .modal {
    padding: var(--spacing-md);
    border-radius: var(--radius-lg);
  }

  .modal-overlay {
    padding: var(--spacing-sm);
  }

  .modal-brand-box {
    width: 80px;
    height: 110px;
    margin-bottom: var(--spacing-md);
  }

  .modal-brand-box .card-3d-container {
    width: 80px;
    height: 110px;
  }

  .modal-brand-box .card-brand-name {
    font-size: 10px;
    margin-top: 6px;
  }

  .modal-brand-box .card-logo {
    width: 40px;
    height: 40px;
  }

  .modal-brand-box .card-value {
    font-size: 14px;
  }

  .modal-brand-box .card-content {
    padding: 10px 8px;
  }

  /* Verify section mobile */
  #verifySection {
    padding: 0 var(--spacing-sm);
  }

  #verifyMessage {
    font-size: 0.8125rem;
    line-height: 1.4;
  }

  #verifyBtn {
    padding: var(--spacing-sm) var(--spacing-lg);
    font-size: 0.875rem;
  }

  /* Status text smaller */
  #statusText {
    font-size: 0.875rem;
  }

  /* Progress steps even smaller */
  .progress-container {
    padding: var(--spacing-sm);
  }

  .step-circle {
    width: 24px;
    height: 24px;
    font-size: 0.625rem;
  }

  .step-label {
    font-size: 0.5rem;
  }

  .progress-bar {
    margin-top: -16px;
  }
}

/* ---------- Code Generation Effects ---------- */
/* Status text animation */
#statusText {
  transition: all 0.2s ease;
}

/* Code segments */
.code-display {
  font-size: 1rem;
  letter-spacing: 1px;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  align-items: center;
  gap: 0;
}

.code-segment {
  display: inline-block;
  padding: 2px 4px;
  border-radius: 4px;
  transition: all 0.3s ease;
  color: var(--success);
}

.code-dash {
  color: var(--text-muted);
  margin: 0 2px;
}

/* Masked segments (slightly blurred - still readable but teasing) */
.code-segment.masked {
  filter: blur(3px);
  color: var(--warning);
  user-select: none;
  position: relative;
  font-size: 1.3em;
  font-weight: 700;
  letter-spacing: 1px;
  transform: scale(1.05);
  display: inline-block;
}

.code-segment.masked::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(
    90deg,
    transparent,
    rgba(245, 158, 11, 0.1),
    transparent
  );
  animation: shimmer 2s infinite;
}

/* Revealed segments */
.code-segment.revealed {
  opacity: 0;
  transform: translateY(10px);
}

.code-segment.revealed.show {
  opacity: 1;
  transform: translateY(0);
  background: rgba(16, 185, 129, 0.1);
  color: var(--success);
}

/* Final segment style */
.code-segment.final {
  font-weight: 700;
}

/* Shimmer animation for masked segments */
@keyframes shimmer {
  0% {
    transform: translateX(-100%);
  }
  100% {
    transform: translateX(100%);
  }
}

/* Code display container improvements */
.code-display {
  min-height: 50px;
  overflow: hidden;
}

/* Verify section animation */
#verifySection {
  transition: all 0.5s ease;
}

/* Modal content improvements */
.modal-content {
  position: relative;
}

/* Responsive code display */
@media (max-width: 480px) {
  .code-display {
    font-size: 0.75rem;
    letter-spacing: 0;
    padding: var(--spacing-md);
  }

  .code-segment {
    padding: 1px 2px;
  }

  .code-dash {
    margin: 0 1px;
  }
}