/* =========================================================================
   AinaOS Landing — Cinematic Dark
   ========================================================================= */

:root {
  --bg-0: #0a0a0d;
  --bg-1: #15151a;
  --bg-2: #1f1f25;
  --border: rgba(255, 255, 255, 0.08);
  --border-strong: rgba(255, 255, 255, 0.12);
  --text-1: #ffffff;
  --text-2: rgba(255, 255, 255, 0.70);
  --text-3: rgba(255, 255, 255, 0.50);
  --coral: #E86B56;
  --coral-soft: rgba(232, 107, 86, 0.18);
  --peach: #FFB997;
  --ember: #FF6B35;
  --glass-bg: rgba(20, 15, 20, 0.70);
  --glass-blur: blur(12px);
  /* Custom easing curves — strong ease-out for UI, in-out for movement */
  --ease-out: cubic-bezier(0.23, 1, 0.32, 1);
  --ease-in-out: cubic-bezier(0.77, 0, 0.175, 1);
}

* { box-sizing: border-box; }

html, body { margin: 0; padding: 0; }

body.landing-page {
  background: var(--bg-0);
  color: var(--text-1);
  font-family: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

/* =========================================================================
   Nav
   ========================================================================= */

.landing-nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  padding: 18px 0;
  background: transparent;
  transition:
    background 220ms var(--ease-out),
    backdrop-filter 220ms var(--ease-out),
    border-color 220ms var(--ease-out);
  border-bottom: 1px solid transparent;
}

.landing-nav.scrolled {
  background: rgba(10, 10, 13, 0.85);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border-bottom-color: var(--border);
}

.landing-nav .navbar-brand { text-decoration: none; }

.landing-nav .wordmark {
  font-weight: 200;
  font-size: 16px;
  letter-spacing: 6px;
  color: var(--text-1);
  text-shadow: 0 0 12px rgba(232, 107, 86, 0.4);
}

.landing-nav .nav-links { display: flex; gap: 28px; }

.landing-nav .nav-links a {
  color: var(--text-2);
  text-decoration: none;
  font-size: 13px;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  font-weight: 500;
  transition: color 180ms var(--ease-out);
}

@media (hover: hover) and (pointer: fine) {
  .landing-nav .nav-links a:hover { color: var(--text-1); }
}

/* =========================================================================
   Hero
   ========================================================================= */

.hero-section {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  overflow: hidden;
  background: var(--bg-0);
}

.hero-film {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  z-index: 1;
}

.hero-overlay {
  position: absolute;
  inset: 0;
  z-index: 2;
  background:
    radial-gradient(ellipse 80% 60% at 50% 50%, transparent 0%, rgba(0,0,0,0.6) 100%),
    linear-gradient(180deg, rgba(10,10,13,0.3) 0%, transparent 30%, transparent 70%, rgba(10,10,13,0.6) 100%);
}

.hero-content {
  position: relative;
  z-index: 3;
  padding-top: 100px;
  padding-bottom: 100px;
}

.hero-kicker {
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: var(--text-2);
  margin-bottom: 24px;
}

.hero-headline {
  font-weight: 200;
  font-size: clamp(40px, 6vw, 80px);
  line-height: 1.05;
  letter-spacing: -0.5px;
  margin: 0 0 24px 0;
  text-shadow: 0 0 24px rgba(232, 107, 86, 0.3);
}

@media (prefers-reduced-motion: no-preference) {
  .hero-headline {
    animation: heroGlow 5.5s ease-in-out infinite;
  }
}

@keyframes heroGlow {
  0%, 100% { text-shadow: 0 0 22px rgba(232, 107, 86, 0.28); }
  50%      { text-shadow: 0 0 36px rgba(232, 107, 86, 0.55); }
}

.hero-subtitle {
  font-size: 17px;
  line-height: 1.6;
  color: var(--text-2);
  max-width: 520px;
  margin: 0;
}

/* Staggered hero entrance: kicker → headline → subtitle → login card */
@media (prefers-reduced-motion: no-preference) {
  .hero-kicker,
  .hero-headline,
  .hero-subtitle,
  .login-card {
    opacity: 0;
    transform: translateY(8px);
    animation: heroEnter 600ms var(--ease-out) forwards;
  }
  .hero-kicker   { animation-delay:  80ms; }
  .hero-headline { animation-delay: 140ms; }
  .hero-subtitle { animation-delay: 220ms; }
  .login-card    { animation-delay: 300ms; }
}

@keyframes heroEnter {
  to { opacity: 1; transform: translateY(0); }
}

/* Login card */
.login-card {
  width: 100%;
  max-width: 380px;
  padding: 32px;
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: 1px solid var(--border-strong);
  border-radius: 14px;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.4);
}

.login-card h2 {
  font-size: 20px;
  font-weight: 600;
  margin: 0 0 20px 0;
  color: var(--text-1);
}

.login-card label {
  display: block;
  font-size: 12px;
  letter-spacing: 1px;
  text-transform: uppercase;
  color: var(--text-3);
  margin-bottom: 6px;
}

.login-card .form-control {
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid var(--border-strong);
  color: var(--text-1);
  border-radius: 8px;
  padding: 10px 14px;
  transition:
    border-color 180ms var(--ease-out),
    background 180ms var(--ease-out),
    box-shadow 180ms var(--ease-out);
}

.login-card .form-control:focus {
  background: rgba(255, 255, 255, 0.08);
  border-color: var(--coral);
  box-shadow: 0 0 0 3px var(--coral-soft);
  color: var(--text-1);
  outline: none;
}

.login-card .btn-login {
  width: 100%;
  background: var(--coral);
  color: white;
  border: none;
  padding: 12px;
  border-radius: 8px;
  font-weight: 600;
  letter-spacing: 1px;
  text-transform: uppercase;
  font-size: 13px;
  margin-top: 8px;
  transition:
    background 160ms var(--ease-out),
    transform 120ms var(--ease-out);
}

@media (hover: hover) and (pointer: fine) {
  .login-card .btn-login:hover { background: var(--ember); }
}
.login-card .btn-login:active { transform: scale(0.97); }

.login-card .login-error {
  background: rgba(196, 69, 54, 0.15);
  color: #ffb0a3;
  border: 1px solid rgba(196, 69, 54, 0.3);
  border-radius: 6px;
  padding: 8px 12px;
  font-size: 13px;
  margin-bottom: 12px;
}

/* =========================================================================
   Stats strip
   ========================================================================= */

.stats-strip {
  background: var(--bg-1);
  padding: 36px 0;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.stats-strip .stat { padding: 12px 8px; }

.stats-strip .stat-value {
  font-size: clamp(28px, 4vw, 40px);
  font-weight: 800;
  color: var(--coral);
  line-height: 1;
  letter-spacing: -0.5px;
}

.stats-strip .stat-label {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: var(--text-3);
  margin-top: 8px;
}

/* =========================================================================
   Shared section headings
   ========================================================================= */

.section-title {
  font-size: 32px;
  font-weight: 600;
  color: var(--text-1);
  text-align: center;
  margin: 0 0 12px 0;
}

.section-subtitle {
  font-size: 16px;
  color: var(--text-2);
  text-align: center;
  max-width: 600px;
  margin: 0 auto 48px auto;
}

/* =========================================================================
   Features
   ========================================================================= */

.features-section {
  padding: 88px 0;
  background: var(--bg-0);
}

.feature-card {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 28px;
  height: 100%;
  transition:
    transform 220ms var(--ease-out),
    border-color 220ms var(--ease-out),
    box-shadow 220ms var(--ease-out);
}

@media (hover: hover) and (pointer: fine) {
  .feature-card:hover {
    transform: translateY(-4px);
    border-color: rgba(232, 107, 86, 0.4);
    box-shadow: 0 16px 40px rgba(0, 0, 0, 0.5), 0 0 0 1px var(--coral-soft);
  }
}

/* Stagger reveal: cards enter when scrolled into view (.is-visible added by JS) */
@media (prefers-reduced-motion: no-preference) {
  .feature-card,
  .steps-row .step {
    opacity: 0;
    transform: translateY(12px);
    transition:
      opacity 500ms var(--ease-out),
      transform 500ms var(--ease-out),
      border-color 220ms var(--ease-out),
      box-shadow 220ms var(--ease-out);
  }
  .feature-card.is-visible,
  .steps-row .step.is-visible {
    opacity: 1;
    transform: translateY(0);
  }
}

.feature-card .feature-icon {
  width: 48px; height: 48px;
  border-radius: 10px;
  background: var(--coral-soft);
  color: var(--coral);
  display: flex; align-items: center; justify-content: center;
  font-size: 22px;
  margin-bottom: 18px;
}

.feature-card h5 {
  font-size: 17px;
  font-weight: 600;
  color: var(--text-1);
  margin: 0 0 8px 0;
}

.feature-card p {
  font-size: 14px;
  line-height: 1.55;
  color: var(--text-2);
  margin: 0;
}

/* =========================================================================
   How It Works
   ========================================================================= */

.how-section {
  padding: 88px 0;
  background: var(--bg-1);
}

.steps-row {
  display: flex;
  align-items: stretch;
  gap: 16px;
  max-width: 980px;
  margin: 0 auto;
}

.steps-row .step {
  flex: 1;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 28px;
  text-align: center;
}

.steps-row .step-number {
  width: 42px; height: 42px;
  border-radius: 50%;
  background: var(--coral-soft);
  color: var(--coral);
  display: inline-flex; align-items: center; justify-content: center;
  font-size: 18px;
  font-weight: 800;
  margin-bottom: 14px;
}

.steps-row .step h5 {
  font-size: 17px;
  font-weight: 600;
  color: var(--text-1);
  margin: 0 0 8px 0;
}

.steps-row .step p {
  font-size: 14px;
  color: var(--text-2);
  margin: 0;
}

.steps-row .step-connector {
  display: flex;
  align-items: center;
  color: var(--text-3);
  font-size: 20px;
}

@media (max-width: 768px) {
  .steps-row { flex-direction: column; }
  .steps-row .step-connector { transform: rotate(90deg); }
}

/* =========================================================================
   Contact
   ========================================================================= */

.contact-section {
  padding: 88px 0;
  background: var(--bg-0);
}

.contact-card {
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: 1px solid var(--border-strong);
  border-radius: 14px;
  padding: 32px;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.4);
}

.contact-card .form-label {
  font-size: 12px;
  letter-spacing: 1px;
  text-transform: uppercase;
  color: var(--text-3);
  margin-bottom: 6px;
}

.contact-card .form-control {
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid var(--border-strong);
  color: var(--text-1);
  border-radius: 8px;
  padding: 10px 14px;
  transition:
    border-color 180ms var(--ease-out),
    background 180ms var(--ease-out),
    box-shadow 180ms var(--ease-out);
}

.contact-card .form-control:focus {
  background: rgba(255, 255, 255, 0.08);
  border-color: var(--coral);
  box-shadow: 0 0 0 3px var(--coral-soft);
  color: var(--text-1);
  outline: none;
}

.btn-contact {
  background: var(--coral);
  color: white;
  border: none;
  padding: 12px 24px;
  border-radius: 8px;
  font-weight: 600;
  letter-spacing: 1px;
  text-transform: uppercase;
  font-size: 13px;
  transition:
    background 160ms var(--ease-out),
    transform 120ms var(--ease-out);
}

@media (hover: hover) and (pointer: fine) {
  .btn-contact:hover { background: var(--ember); color: white; }
}
.btn-contact:active { transform: scale(0.97); }

.contact-direct {
  color: var(--text-3);
  margin-bottom: 6px;
  font-size: 13px;
}

.contact-email {
  color: var(--coral);
  font-weight: 600;
  text-decoration: none;
  font-size: 15px;
  transition: color 160ms var(--ease-out);
}

@media (hover: hover) and (pointer: fine) {
  .contact-email:hover { color: var(--peach); }
}

/* =========================================================================
   Footer
   ========================================================================= */

.landing-footer {
  background: var(--bg-1);
  border-top: 1px solid var(--border);
  padding: 28px 0;
  color: var(--text-3);
  font-size: 13px;
}

.landing-footer .footer-brand {
  font-weight: 200;
  letter-spacing: 4px;
  color: var(--text-1);
  margin-right: 16px;
}

.landing-footer .footer-copy { color: var(--text-3); }

.landing-footer .footer-tag { color: var(--text-3); }

/* =========================================================================
   Reduced-motion fallback
   ========================================================================= */

@media (prefers-reduced-motion: reduce) {
  .hero-film { display: none; }
  .hero-section {
    background-image: url("/static/video/brand-film-poster.70e6d9dad27f.jpg");
    background-size: cover;
    background-position: center;
  }
  /* Keep opacity/color transitions (aid comprehension); strip transforms */
  .feature-card,
  .steps-row .step,
  .login-card,
  .hero-kicker,
  .hero-headline,
  .hero-subtitle {
    opacity: 1 !important;
    transform: none !important;
    animation: none !important;
  }
  .feature-card:hover {
    transform: none !important;
  }
}

/* =========================================================================
   Responsive tweaks
   ========================================================================= */

@media (max-width: 992px) {
  .hero-content { padding-top: 120px; padding-bottom: 60px; }
  .login-card { margin-top: 32px; }
  .landing-nav .nav-links { gap: 16px; }
  .landing-nav .nav-links a { font-size: 11px; letter-spacing: 1px; }
}

@media (max-width: 576px) {
  .hero-headline { font-size: 40px; }
  .hero-subtitle { font-size: 15px; }
  .stats-strip { padding: 28px 0; }
  .stats-strip .stat-value { font-size: 28px; }
  .features-section, .how-section, .contact-section { padding: 60px 0; }
}