/* ========================================
   PhoneBooth Landing Page — Design Tokens & Styles
   Matches CallWall design system (dark + orange)
   ======================================== */

/* --- CSS Variables (from CallWall) --- */
:root {
  --background: #000000;
  --card: #1C1C1E;
  --primary: #FF9500;
  --primary-hover: #FF6B00;
  --success: #34C759;
  --error: #FF3B30;
  --border: #38383A;
  --text-primary: #FFFFFF;
  --text-secondary: #8E8E93;
  --text-tertiary: #48484A;
}

/* --- Reset --- */
*, *::before, *::after {
  box-sizing: border-box;
}

html, body {
  margin: 0;
  padding: 0;
  width: 100%;
  background: var(--background);
  font-family: 'Inter', sans-serif;
  color: var(--text-primary);
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  overflow-x: clip;
}

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

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

/* --- Gradient Text --- */
.gradient-text {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-hover) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* --- Hero Dot Pattern --- */
.hero-pattern {
  background-color: var(--background);
  background-image: radial-gradient(var(--border) 0.5px, transparent 0.5px);
  background-size: 20px 20px;
}

/* --- Glassmorphism Navbar --- */
.glass-nav {
  background: rgba(0, 0, 0, 0.70);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(56, 56, 58, 0.5);
}

/* --- Card Base --- */
.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 16px;
  transition: border-color 0.3s ease, box-shadow 0.3s ease;
}

.card:hover {
  border-color: rgba(255, 149, 0, 0.3);
}

/* --- Primary Button --- */
.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  background: var(--primary);
  color: #000;
  font-weight: 700;
  border: none;
  border-radius: 9999px;
  cursor: pointer;
  transition: background 0.2s ease, transform 0.15s ease, box-shadow 0.2s ease;
  box-shadow: 0 8px 32px rgba(255, 149, 0, 0.2);
}

.btn-primary:hover {
  background: var(--primary-hover);
  transform: translateY(-1px);
  box-shadow: 0 12px 40px rgba(255, 149, 0, 0.3);
}

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

/* --- Secondary / Ghost Button --- */
.btn-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  background: transparent;
  color: var(--text-primary);
  font-weight: 600;
  border: 1px solid var(--border);
  border-radius: 9999px;
  cursor: pointer;
  transition: border-color 0.2s ease, color 0.2s ease;
}

.btn-secondary:hover {
  border-color: var(--primary);
  color: var(--primary);
}

/* --- Code Block / Terminal Styling --- */
.code-block {
  background: #0D0D0D;
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 24px;
  font-family: 'SF Mono', 'Fira Code', 'Cascadia Code', monospace;
  font-size: 14px;
  line-height: 1.7;
  color: var(--text-secondary);
  overflow-x: auto;
  position: relative;
}

.code-block .prompt {
  color: var(--primary);
  user-select: none;
}

.code-block .comment {
  color: var(--text-tertiary);
}

.code-block .string {
  color: var(--success);
}

.code-block .keyword {
  color: #FF6B9D;
}

.code-block .url {
  color: #64D2FF;
}

.code-block-header {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 12px 16px;
  background: rgba(255, 255, 255, 0.03);
  border-bottom: 1px solid var(--border);
  border-radius: 12px 12px 0 0;
  font-family: 'Inter', sans-serif;
  font-size: 12px;
  font-weight: 600;
  color: var(--text-tertiary);
  letter-spacing: 0.02em;
}

.code-block-header .dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--border);
}

.code-block-header .dot:nth-child(1) { background: #FF5F57; }
.code-block-header .dot:nth-child(2) { background: #FEBC2E; }
.code-block-header .dot:nth-child(3) { background: #28C840; }

.code-block.with-header {
  border-radius: 0 0 12px 12px;
  border-top: none;
}

/* --- Step Number (big background number) --- */
.step-number {
  font-size: 7rem;
  font-weight: 900;
  color: var(--border);
  position: absolute;
  top: -2.5rem;
  left: -1.5rem;
  z-index: 0;
  line-height: 1;
  user-select: none;
}

/* --- FAQ Accordion --- */
.faq-item {
  border-bottom: 1px solid var(--border);
}

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

.faq-question {
  display: flex;
  justify-content: space-between;
  align-items: center;
  width: 100%;
  padding: 20px 0;
  background: none;
  border: none;
  color: var(--text-primary);
  font-size: 16px;
  font-weight: 600;
  font-family: 'Inter', sans-serif;
  cursor: pointer;
  text-align: left;
  transition: color 0.2s ease;
}

.faq-question:hover {
  color: var(--primary);
}

.faq-question svg {
  flex-shrink: 0;
  transition: transform 0.3s ease;
  color: var(--text-secondary);
}

.faq-item.open .faq-question svg {
  transform: rotate(180deg);
  color: var(--primary);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease, padding 0.3s ease;
}

.faq-item.open .faq-answer {
  max-height: 300px;
  padding-bottom: 20px;
}

.faq-answer p {
  color: var(--text-secondary);
  font-size: 14px;
  line-height: 1.7;
  margin: 0;
}

/* --- Amount Selector --- */
.amount-option {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 12px 20px;
  background: var(--card);
  border: 2px solid var(--border);
  border-radius: 12px;
  color: var(--text-secondary);
  font-weight: 700;
  font-size: 16px;
  cursor: pointer;
  transition: all 0.2s ease;
  font-family: 'Inter', sans-serif;
}

.amount-option:hover {
  border-color: var(--primary);
  color: var(--text-primary);
}

.amount-option.selected {
  border-color: var(--primary);
  background: rgba(255, 149, 0, 0.1);
  color: var(--primary);
}

/* --- Form Input --- */
.form-input {
  width: 100%;
  padding: 14px 16px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 12px;
  color: var(--text-primary);
  font-family: 'Inter', sans-serif;
  font-size: 16px;
  outline: none;
  transition: border-color 0.2s ease;
}

.form-input::placeholder {
  color: var(--text-tertiary);
}

.form-input:focus {
  border-color: var(--primary);
}

.form-input.valid {
  border-color: var(--success);
}

.form-input.valid:focus {
  border-color: var(--success);
}

.form-label {
  display: block;
  font-size: 13px;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 8px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* --- Section Utilities --- */
.section-padding {
  padding: 96px 16px;
}

.section-padding-dark {
  padding: 96px 16px;
  background: var(--card);
}

/* --- Architecture Diagram --- */
.architecture-box {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 20px;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: var(--card);
  font-size: 13px;
  font-weight: 600;
  color: var(--text-primary);
  white-space: nowrap;
}

.architecture-arrow {
  color: var(--primary);
  font-family: monospace;
  font-size: 20px;
}

/* --- Glow Effects --- */
.glow-orange {
  box-shadow: 0 0 80px rgba(255, 149, 0, 0.15), 0 0 160px rgba(255, 149, 0, 0.05);
}

.glow-ring {
  position: relative;
}

.glow-ring::before {
  content: '';
  position: absolute;
  inset: -1px;
  border-radius: inherit;
  background: linear-gradient(135deg, var(--primary), transparent, var(--primary));
  opacity: 0;
  transition: opacity 0.3s ease;
  z-index: -1;
}

.glow-ring:hover::before {
  opacity: 0.5;
}

/* --- Trust Badge --- */
.trust-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border);
  border-radius: 9999px;
  font-size: 12px;
  font-weight: 500;
  color: var(--text-secondary);
}

.trust-badge svg {
  width: 14px;
  height: 14px;
  color: var(--primary);
}

/* --- Mobile Nav Overlay --- */
.mobile-nav {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 100;
  background: rgba(0, 0, 0, 0.95);
  backdrop-filter: blur(20px);
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 32px;
}

.mobile-nav.open {
  display: flex;
}

.mobile-nav a {
  font-size: 24px;
  font-weight: 700;
  color: var(--text-primary);
  transition: color 0.2s ease;
}

.mobile-nav a:hover {
  color: var(--primary);
}

/* --- Hamburger Button --- */
.hamburger {
  display: none;
  background: none;
  border: none;
  color: var(--text-primary);
  cursor: pointer;
  padding: 8px;
}

/* --- Animations --- */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes pulse-glow {
  0%, 100% {
    box-shadow: 0 0 20px rgba(255, 149, 0, 0.2);
  }
  50% {
    box-shadow: 0 0 40px rgba(255, 149, 0, 0.4);
  }
}

.animate-fade-in-up {
  animation: fadeInUp 0.6s ease-out forwards;
}

.animate-delay-1 { animation-delay: 0.1s; }
.animate-delay-2 { animation-delay: 0.2s; }
.animate-delay-3 { animation-delay: 0.3s; }
.animate-delay-4 { animation-delay: 0.4s; }

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

/* --- Stripe Element Container --- */
.stripe-element-container {
  width: 100%;
  padding: 16px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 12px;
  transition: border-color 0.2s ease;
}

.stripe-element-container:focus-within,
.stripe-element-container.StripeElement--focus {
  border-color: var(--primary);
}

.stripe-element-container.StripeElement--invalid {
  border-color: var(--error);
}

/* --- Responsive --- */
@media (max-width: 768px) {
  .hamburger {
    display: block;
  }

  .desktop-nav {
    display: none;
  }

  .section-padding,
  .section-padding-dark {
    padding: 64px 16px;
  }

  .step-number {
    font-size: 4rem;
    top: -1.5rem;
    left: -0.5rem;
  }
}

@media (min-width: 769px) {
  .mobile-nav {
    display: none !important;
  }
}