/* =====================================================
   LUMEN LANDING PAGE — CSS
   Vibe: Dark editorial. Warm amber accent. Purposeful.
   Fonts: Fraunces (display) + Satoshi (body)
   ===================================================== */

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

:root {
  --bg:         #0d0d0d;
  --surface:    #141414;
  --surface-2:  #1a1a1a;
  --border:     rgba(255,255,255,0.08);
  --accent:     #f5a623;
  --accent-dim: rgba(245,166,35,0.12);
  --text:       #e8e3da;
  --text-muted: #7a7570;
  --text-dim:   #4a4640;
  --white:      #ffffff;

  --font-display: 'Fraunces', Georgia, serif;
  --font-body:    'Satoshi', -apple-system, sans-serif;

  --space-xs:  0.5rem;
  --space-sm:  1rem;
  --space-md:  2rem;
  --space-lg:  4rem;
  --space-xl:  6rem;
  --space-2xl: 8rem;

  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 16px;

  --max-w: 1080px;
  --transition: 0.22s ease;
}

html { scroll-behavior: smooth; }

body {
  background-color: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
}

/* --- LAYOUT UTILITY --- */
.container {
  width: 100%;
  max-width: var(--max-w);
  margin-inline: auto;
  padding-inline: 1.25rem;
}

/* =====================================================
   NAVIGATION
   ===================================================== */
.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(13,13,13,0.85);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
}

.nav-inner {
  max-width: var(--max-w);
  margin-inline: auto;
  padding: 1rem 1.25rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  font-family: var(--font-display);
  font-size: 1.4rem;
  font-weight: 600;
  color: var(--white);
  letter-spacing: -0.02em;
}

.nav-cta {
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--bg);
  background: var(--accent);
  padding: 0.5rem 1.1rem;
  border-radius: var(--radius-sm);
  text-decoration: none;
  letter-spacing: 0.01em;
  transition: opacity var(--transition);
}
.nav-cta:hover { opacity: 0.85; }

/* =====================================================
   HERO
   ===================================================== */
.hero {
  position: relative;
  min-height: 90vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  overflow: hidden;
  padding: var(--space-xl) 0 var(--space-lg);
}

/* Subtle grid texture */
.hero-bg-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.025) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: radial-gradient(ellipse 80% 60% at 50% 40%, black 30%, transparent 100%);
  pointer-events: none;
}

/* Glow orb behind hero */
.hero::before {
  content: '';
  position: absolute;
  top: -10%;
  left: 50%;
  transform: translateX(-50%);
  width: 640px;
  height: 400px;
  background: radial-gradient(ellipse, rgba(245,166,35,0.08) 0%, transparent 70%);
  pointer-events: none;
}

.hero-inner {
  position: relative;
  z-index: 1;
  max-width: 720px;
}

.hero-tag {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent);
  border: 1px solid rgba(245,166,35,0.3);
  background: var(--accent-dim);
  padding: 0.3rem 0.75rem;
  border-radius: 999px;
  margin-bottom: 1.5rem;
}

.hero-heading {
  font-family: var(--font-display);
  font-size: clamp(2.4rem, 5.5vw, 4rem);
  font-weight: 300;
  line-height: 1.1;
  letter-spacing: -0.03em;
  color: var(--white);
  margin-bottom: 1.25rem;
}

.hero-heading em {
  font-style: italic;
  font-weight: 400;
  color: var(--accent);
}

.hero-sub {
  font-size: clamp(1rem, 2vw, 1.15rem);
  color: var(--text-muted);
  max-width: 540px;
  margin-bottom: 2.5rem;
  line-height: 1.7;
}

/* --- FORM --- */
.hero-form {
  width: 100%;
  max-width: 520px;
}

.form-row {
  display: flex;
  gap: 0.5rem;
  width: 100%;
}

.hero-form input[type="email"] {
  flex: 1;
  min-width: 0;
  padding: 0.8rem 1rem;
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 0.95rem;
  outline: none;
  transition: border-color var(--transition), box-shadow var(--transition);
}
.hero-form input[type="email"]::placeholder { color: var(--text-dim); }
.hero-form input[type="email"]:focus {
  border-color: rgba(245,166,35,0.5);
  box-shadow: 0 0 0 3px rgba(245,166,35,0.08);
}

.btn-primary {
  position: relative;
  padding: 0.8rem 1.3rem;
  background: var(--accent);
  color: var(--bg);
  border: none;
  border-radius: var(--radius-sm);
  font-family: var(--font-body);
  font-size: 0.9rem;
  font-weight: 700;
  letter-spacing: 0.01em;
  cursor: pointer;
  white-space: nowrap;
  transition: opacity var(--transition), transform var(--transition);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}
.btn-primary:hover:not(:disabled) { opacity: 0.88; transform: translateY(-1px); }
.btn-primary:active:not(:disabled) { transform: translateY(0); }
.btn-primary:disabled { opacity: 0.55; cursor: default; }

.btn-spinner {
  display: none;
  width: 14px;
  height: 14px;
  border: 2px solid rgba(0,0,0,0.3);
  border-top-color: var(--bg);
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

.form-note {
  margin-top: 0.65rem;
  font-size: 0.78rem;
  color: var(--text-dim);
  letter-spacing: 0.01em;
}

.form-feedback {
  margin-top: 0.5rem;
  font-size: 0.875rem;
  min-height: 1.2em;
  transition: opacity 0.2s;
}
.form-feedback--success { color: #4ade80; }
.form-feedback--error   { color: #f87171; }

/* --- SCROLL HINT --- */
.scroll-hint {
  position: absolute;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
}
.scroll-dot {
  width: 6px;
  height: 6px;
  background: var(--text-dim);
  border-radius: 50%;
  animation: float 2s ease-in-out infinite;
}
@keyframes float {
  0%, 100% { transform: translateY(0); opacity: 0.5; }
  50%       { transform: translateY(6px); opacity: 1; }
}

/* =====================================================
   VALUE PROPS
   ===================================================== */
.values {
  padding: var(--space-xl) 0;
  border-top: 1px solid var(--border);
}

.section-label {
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-dim);
  margin-bottom: 0.75rem;
}

.section-heading {
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 3.5vw, 2.6rem);
  font-weight: 300;
  line-height: 1.2;
  letter-spacing: -0.025em;
  color: var(--white);
  margin-bottom: var(--space-lg);
}

.value-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
}

@media (min-width: 640px) {
  .value-grid { grid-template-columns: 1fr 1fr; }
}
@media (min-width: 900px) {
  .value-grid { grid-template-columns: 1fr 1fr 1fr; }
}

.value-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 2rem;
  transition: border-color var(--transition), transform var(--transition);
}
.value-card:hover {
  border-color: rgba(255,255,255,0.14);
  transform: translateY(-2px);
}

.value-card--accent {
  background: var(--accent-dim);
  border-color: rgba(245,166,35,0.2);
}
.value-card--accent:hover {
  border-color: rgba(245,166,35,0.35);
}

.value-icon {
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--accent);
  margin-bottom: 1.25rem;
}
.value-card--accent .value-icon {
  background: rgba(245,166,35,0.1);
  border-color: rgba(245,166,35,0.2);
}

.value-title {
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--white);
  letter-spacing: -0.01em;
  margin-bottom: 0.65rem;
}

.value-body {
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.7;
}

/* =====================================================
   SOCIAL PROOF
   ===================================================== */
.proof {
  background: var(--surface);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  padding: var(--space-md) 0;
}

.proof-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 2rem;
}

.proof-stat {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
}

.proof-number {
  font-family: var(--font-display);
  font-size: 2.2rem;
  font-weight: 600;
  color: var(--accent);
  letter-spacing: -0.04em;
  line-height: 1;
}

.proof-label {
  font-size: 0.78rem;
  color: var(--text-muted);
  margin-top: 0.3rem;
  letter-spacing: 0.01em;
}

.proof-divider {
  width: 1px;
  height: 40px;
  background: var(--border);
}

@media (max-width: 500px) {
  .proof-divider { display: none; }
}

/* =====================================================
   BOTTOM CTA
   ===================================================== */
.cta-section {
  padding: var(--space-xl) 0;
  position: relative;
  overflow: hidden;
}

.cta-section::before {
  content: '';
  position: absolute;
  bottom: -20%;
  left: 50%;
  transform: translateX(-50%);
  width: 700px;
  height: 350px;
  background: radial-gradient(ellipse, rgba(245,166,35,0.06) 0%, transparent 70%);
  pointer-events: none;
}

.cta-inner {
  position: relative;
  z-index: 1;
  max-width: 640px;
}

.cta-heading {
  font-family: var(--font-display);
  font-size: clamp(1.9rem, 4vw, 2.8rem);
  font-weight: 300;
  color: var(--white);
  letter-spacing: -0.03em;
  line-height: 1.15;
  margin-bottom: 0.75rem;
}

.cta-sub {
  color: var(--text-muted);
  font-size: 1rem;
  margin-bottom: 2rem;
}

.cta-form { max-width: 480px; }

/* =====================================================
   FOOTER
   ===================================================== */
.footer {
  border-top: 1px solid var(--border);
  padding: var(--space-md) 0;
}

.footer-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 1rem;
}

.footer-logo {
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--white);
}

.footer-divider {
  color: var(--text-dim);
}

.footer-link {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.875rem;
  transition: color var(--transition);
}
.footer-link:hover { color: var(--accent); }

.footer-copy {
  font-size: 0.8rem;
  color: var(--text-dim);
  margin-left: auto;
}

/* =====================================================
   MOBILE OVERRIDES
   ===================================================== */
@media (max-width: 480px) {
  .form-row {
    flex-direction: column;
  }
  .btn-primary {
    width: 100%;
    justify-content: center;
    padding: 0.9rem;
  }
  .hero-form input[type="email"] {
    width: 100%;
  }
  .proof-inner { gap: 1.25rem; }
  .footer-copy { margin-left: 0; }
}