/* ============================================
   Drift — Waitlist Landing Page
   ============================================ */

/* --- Fonts --- */
@font-face {
  font-family: 'Fraunces';
  src: url('assets/fonts/fraunces.woff2') format('woff2');
  font-weight: 600 900;
  font-style: normal;
  font-display: swap;
}

/* --- Design Tokens --- */
:root {
  --color-bg: #1C1917;
  --color-bg-card: #292524;
  --color-accent: #C2734C;
  --color-accent-hover: #D4845D;
  --color-text-primary: #FAFAF9;
  --color-text-secondary: #A8A29E;
  --color-border: #3a3530;
  --font-heading: 'Fraunces', Georgia, serif;
  --font-body: 'Inter', system-ui, -apple-system, sans-serif;
  --transition: 0.3s ease;
  --radius: 12px;
  --radius-lg: 20px;
  --radius-pill: 9999px;
  --max-w: 600px;
}

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

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  overflow-x: hidden;
}

body {
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  color: var(--color-text-primary);
  background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

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

button, input {
  font: inherit;
  color: inherit;
  border: none;
  outline: none;
  background: none;
}

/* --- Scroll Animations --- */
.fade-in-up {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
  transition-delay: var(--stagger-delay, 0s);
}

.fade-in-up.visible {
  opacity: 1;
  transform: translateY(0);
}

/* --- Keyframes --- */
@keyframes hero-float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-6px); }
}

@keyframes icon-bounce {
  0% { transform: scale(0.8); }
  60% { transform: scale(1.05); }
  100% { transform: scale(1); }
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

@keyframes heartbeat {
  0%, 80%, 100% { transform: scale(1); }
  10% { transform: scale(1.15); }
  20% { transform: scale(1); }
  30% { transform: scale(1.1); }
  40% { transform: scale(1); }
}

/* --- Layout --- */
.page-wrapper {
  display: flex;
  flex-direction: column;
  align-items: center;
  min-height: 100dvh;
  padding: 0 24px;
}

.content {
  width: 100%;
  max-width: var(--max-w);
}

/* --- Header --- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  width: 100%;
  max-width: var(--max-w);
  padding: clamp(20px, 4vw, 32px) 0;
  transition: background var(--transition), box-shadow var(--transition);
}

.site-header.scrolled {
  background: rgba(28, 25, 23, 0.95);
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.3);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
}

.header-inner {
  display: flex;
  align-items: center;
  gap: 10px;
}

.header-icon {
  width: 32px;
  height: 32px;
  border-radius: 8px;
  transition: filter var(--transition);
}

.header-inner:hover .header-icon {
  filter: drop-shadow(0 0 6px rgba(194, 115, 76, 0.4));
}

.header-wordmark {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1.125rem;
  letter-spacing: -0.02em;
}

/* --- Hero --- */
.hero {
  text-align: center;
  padding: clamp(32px, 8vw, 80px) 0 clamp(40px, 8vw, 60px);
  position: relative;
}

/* Ambient glow */
.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: min(480px, 100vw);
  height: min(480px, 100vw);
  background: radial-gradient(circle, rgba(194, 115, 76, 0.06) 0%, transparent 70%);
  pointer-events: none;
  z-index: 0;
}

.hero > * {
  position: relative;
  z-index: 1;
}

.hero-icon {
  width: 96px;
  height: 96px;
  border-radius: var(--radius-lg);
  margin: 0 auto clamp(24px, 4vw, 32px);
  box-shadow:
    0 0 40px rgba(194, 115, 76, 0.2),
    0 0 80px rgba(194, 115, 76, 0.08);
}

.hero-icon.visible {
  animation: hero-float 6s ease-in-out 1s infinite;
}

.hero h1 {
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: clamp(2rem, 5vw, 3rem);
  line-height: 1.15;
  letter-spacing: -0.03em;
  margin-bottom: clamp(16px, 3vw, 24px);
}

.hero h1 .accent-glow {
  transition: text-shadow 0.8s ease;
}

.hero h1.visible .accent-glow {
  text-shadow: 0 0 20px rgba(194, 115, 76, 0.3);
}

.hero-tagline {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: clamp(1.1rem, 2.5vw, 1.4rem);
  color: var(--color-text-secondary);
  letter-spacing: -0.01em;
  margin-bottom: clamp(16px, 3vw, 24px);
}

.hero-subtitle {
  font-size: clamp(1rem, 2vw, 1.2rem);
  color: var(--color-text-secondary);
  line-height: 1.7;
  max-width: 520px;
  margin: 0 auto clamp(28px, 5vw, 40px);
}

/* --- Email Form --- */
.form-wrapper {
  max-width: 460px;
  margin: 0 auto;
}

.waitlist-form {
  display: flex;
  align-items: center;
  gap: 0;
  background: var(--color-bg-card);
  border-radius: var(--radius-pill);
  padding: 5px;
  border: 1px solid var(--color-border);
  transition: border-color var(--transition);
}

.waitlist-form:focus-within {
  border-color: rgba(194, 115, 76, 0.4);
}

.waitlist-form input[type="email"] {
  flex: 1;
  min-width: 0;
  height: 44px;
  padding: 0 16px;
  font-size: 16px;
  background: transparent;
  color: var(--color-text-primary);
}

.waitlist-form input[type="email"]::placeholder {
  color: var(--color-text-secondary);
}

/* Override browser autofill styles */
.waitlist-form input[type="email"]:-webkit-autofill,
.waitlist-form input[type="email"]:-webkit-autofill:hover,
.waitlist-form input[type="email"]:-webkit-autofill:focus {
  -webkit-text-fill-color: var(--color-text-primary);
  -webkit-box-shadow: 0 0 0 1000px var(--color-bg-card) inset;
  border-radius: var(--radius-pill);
  caret-color: var(--color-text-primary);
}

.waitlist-form input[type="email"]:focus {
  caret-color: var(--color-accent);
}

.waitlist-form button {
  flex-shrink: 0;
  height: 44px;
  padding: 0 24px;
  font-size: 1rem;
  font-weight: 600;
  color: #fff;
  background: var(--color-accent);
  border-radius: var(--radius-pill);
  cursor: pointer;
  transition: background var(--transition), transform var(--transition), box-shadow var(--transition);
  white-space: nowrap;
}

.waitlist-form button:hover:not(:disabled) {
  background: var(--color-accent-hover);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(194, 115, 76, 0.3);
}

.waitlist-form button:active:not(:disabled) {
  transform: translateY(1px);
  box-shadow: 0 2px 8px rgba(194, 115, 76, 0.2);
  transition-duration: 0.1s;
}

.waitlist-form button:focus-visible {
  outline: none;
  box-shadow: 0 0 0 3px var(--color-bg), 0 0 0 5px var(--color-accent);
}

.waitlist-form button:disabled {
  opacity: 0.7;
  cursor: not-allowed;
}

.form-note {
  margin-top: 16px;
  font-size: 0.85rem;
  color: var(--color-text-secondary);
}

/* Form states */
.form-success {
  display: none;
  text-align: center;
  animation: fadeIn 0.4s ease-out both;
}

.form-success.is-visible {
  display: block;
}

.form-success p {
  font-size: 1.05rem;
  color: var(--color-text-primary);
}

.form-success span {
  color: var(--color-accent);
}

.form-error {
  display: none;
  margin-top: 12px;
  font-size: 0.875rem;
  color: #E87C5D;
  text-align: center;
}

.form-error[role="alert"] {
  display: block;
  animation: fadeIn 0.3s ease-out both;
}

/* --- Divider --- */
.divider {
  border: none;
  height: 1px;
  width: 100%;
  max-width: var(--max-w);
  background: linear-gradient(
    90deg,
    transparent,
    rgba(194, 115, 76, 0.4),
    transparent
  );
}

/* --- Features --- */
.features {
  width: 100%;
  max-width: var(--max-w);
  padding: clamp(36px, 7vw, 56px) 0;
}

.features-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  list-style: none;
}

.feature-card {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  background: var(--color-bg-card);
  border-radius: var(--radius);
  padding: clamp(14px, 3vw, 20px);
  border: 1px solid var(--color-border);
  transition: border-color var(--transition), transform var(--transition), box-shadow var(--transition);
}

.feature-card:hover {
  border-color: var(--color-accent);
  transform: translateY(-4px);
  box-shadow: 0 8px 32px rgba(194, 115, 76, 0.08);
}

.feature-check {
  flex-shrink: 0;
  width: 20px;
  height: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-top: 1px;
}

.feature-check svg {
  width: 18px;
  height: 18px;
  stroke: var(--color-accent);
}

.feature-card.visible .feature-check svg {
  animation: icon-bounce 0.4s ease calc(var(--stagger-delay, 0s) + 0.2s) both;
}

.feature-card h3 {
  font-size: 0.9rem;
  font-weight: 600;
  line-height: 1.4;
  margin-bottom: 4px;
}

.feature-card p {
  font-size: 0.8rem;
  color: var(--color-text-secondary);
  line-height: 1.5;
}

/* --- Footer --- */
.site-footer {
  width: 100%;
  max-width: var(--max-w);
  padding: clamp(24px, 5vw, 36px) 0;
  text-align: center;
  font-size: 0.85rem;
  color: var(--color-text-secondary);
}

.site-footer a {
  position: relative;
  transition: color var(--transition);
}

.site-footer a::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 1px;
  background: var(--color-accent);
  transition: width var(--transition);
}

.site-footer a:hover {
  color: var(--color-text-primary);
}

.site-footer a:hover::after {
  width: 100%;
}

.footer-credit {
  display: inline;
}

.footer-heart {
  display: inline-block;
  animation: heartbeat 3s ease-in-out infinite;
}

.footer-sep {
  margin: 0 8px;
  opacity: 0.4;
}

/* --- Privacy Page --- */
.privacy-page {
  padding: clamp(32px, 6vw, 48px) 0;
}

.privacy-page h1 {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: clamp(1.5rem, 4vw, 2rem);
  letter-spacing: -0.02em;
  margin-bottom: 8px;
}

.privacy-page .last-updated {
  font-size: 0.85rem;
  color: var(--color-text-secondary);
  margin-bottom: clamp(24px, 4vw, 36px);
}

.privacy-page h2 {
  font-size: 1.05rem;
  font-weight: 600;
  margin-top: 28px;
  margin-bottom: 12px;
}

.privacy-page p {
  color: var(--color-text-secondary);
  margin-bottom: 16px;
  line-height: 1.7;
}

.privacy-page ul {
  color: var(--color-text-secondary);
  list-style: none;
  margin-bottom: 16px;
  padding-left: 0;
}

.privacy-page ul li::before {
  content: '—';
  margin-right: 8px;
  color: var(--color-accent);
}

.privacy-page a {
  color: var(--color-accent);
  text-decoration: underline;
  text-underline-offset: 2px;
}

.privacy-page a:hover {
  color: var(--color-accent-hover);
}

.back-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.9rem;
  color: var(--color-text-secondary);
  margin-bottom: clamp(24px, 4vw, 36px);
  transition: color var(--transition);
}

.back-link:hover {
  color: var(--color-text-primary);
}

/* --- Responsive --- */
@media (max-width: 600px) {
  .waitlist-form {
    flex-direction: column;
    background: none;
    border: none;
    border-radius: 0;
    padding: 0;
    gap: 10px;
  }

  .waitlist-form input[type="email"] {
    width: 100%;
    text-align: center;
    min-height: 46px;
    padding: 0 16px;
    font-size: 16px;
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
  }

  .waitlist-form input[type="email"]:focus {
    border-color: rgba(194, 115, 76, 0.4);
  }

  .waitlist-form button {
    width: 100%;
    height: 52px;
    border-radius: var(--radius);
  }

  .features-grid {
    grid-template-columns: 1fr;
  }

  .form-wrapper {
    max-width: 100%;
  }
}

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

  .fade-in-up {
    opacity: 1;
    transform: none;
  }

  .hero-icon.visible {
    animation: none;
  }
}