/* ============================================
   Forve — Landing Page Styles
   Dark B2B, mobile-first, pure CSS, no gradients
   Design: typography + status color carry all hierarchy
   ============================================ */

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

:root {
  /* Color tokens — Forve B2B palette */
  --bg-primary:   #0F0F0F;
  --bg-surface:   #1A1A1A;
  --bg-elevated:  #242424;
  --border:       #2E2E2E;
  --text-primary: #F5F5F5;
  --text-secondary: #A3A3A3;
  --text-muted:   #525252;
  --status-action: #EF4444;
  --status-progress: #F59E0B;
  --status-done:  #22C55E;
  --accent:       #FFFFFF;

  /* Spacing — 4px base unit */
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 20px;
  --space-6: 24px;
  --space-8: 32px;
  --space-10: 40px;
  --space-12: 48px;
  --space-16: 64px;
  --space-20: 80px;
  --space-24: 96px;

  /* Radius */
  --radius-sm:  4px;
  --radius-md:  8px;
  --radius-lg:  12px;
  --radius-full: 9999px;

  /* Typography */
  --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;

  /* Transitions — fast, data tool feel */
  --transition: 150ms ease-out;
}

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

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

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

img, svg {
  display: block;
}

/* --- Container --- */
.container {
  width: 100%;
  max-width: 1080px;
  margin: 0 auto;
  padding: 0 var(--space-5);
}

@media (min-width: 768px) {
  .container {
    padding: 0 var(--space-8);
  }
}

/* ============================================
   NAV
   ============================================ */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: transparent;
  border-bottom: 1px solid transparent;
  transition: border-color var(--transition), background var(--transition);
}

.nav.scrolled {
  background: rgba(15, 15, 15, 0.95);
  border-bottom-color: var(--border);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 56px;
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: 18px;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: -0.02em;
}

.nav-brand svg {
  width: 22px;
  height: 22px;
  flex-shrink: 0;
}

.nav-right {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

/* Language toggle */
.lang-dropdown {
  position: relative;
}

.lang-toggle {
  display: flex;
  align-items: center;
  gap: var(--space-1);
  background: transparent;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  color: var(--text-secondary);
  font-family: var(--font);
  font-size: 12px;
  font-weight: 500;
  padding: 4px 8px;
  cursor: pointer;
  transition: border-color var(--transition), color var(--transition);
  line-height: 1;
}

.lang-toggle:hover {
  border-color: var(--text-muted);
  color: var(--text-primary);
}

.lang-chevron {
  font-size: 10px;
  color: var(--text-muted);
  transition: transform var(--transition);
}

.lang-toggle.open .lang-chevron {
  transform: rotate(180deg);
}

.lang-menu {
  position: absolute;
  top: calc(100% + 6px);
  right: 0;
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  overflow: hidden;
  min-width: 120px;
}

.lang-opt {
  display: block;
  width: 100%;
  padding: 8px 12px;
  background: transparent;
  border: none;
  color: var(--text-secondary);
  font-family: var(--font);
  font-size: 13px;
  text-align: left;
  cursor: pointer;
  transition: background var(--transition), color var(--transition);
}

.lang-opt:hover {
  background: var(--bg-elevated);
  color: var(--text-primary);
}

.lang-opt.active {
  color: var(--text-primary);
  font-weight: 500;
}

.lang-sep {
  height: 1px;
  background: var(--border);
}

/* Nav CTA button */
.btn-nav {
  display: inline-flex;
  align-items: center;
  background: var(--accent);
  color: #0F0F0F;
  font-family: var(--font);
  font-size: 13px;
  font-weight: 600;
  padding: 7px 14px;
  border-radius: var(--radius-md);
  border: none;
  cursor: pointer;
  transition: opacity var(--transition);
  white-space: nowrap;
  text-decoration: none;
}

.btn-nav:hover {
  opacity: 0.88;
}

/* ============================================
   HERO
   ============================================ */
.hero {
  padding: 120px 0 var(--space-24);
}

.hero-eyebrow {
  display: inline-block;
  font-size: 12px;
  font-weight: 500;
  color: var(--text-muted);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: var(--space-5);
}

.hero h1 {
  font-size: 40px;
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.03em;
  color: var(--text-primary);
  max-width: 680px;
  margin-bottom: var(--space-5);
}

@media (min-width: 600px) {
  .hero h1 {
    font-size: 48px;
  }
}

@media (min-width: 768px) {
  .hero h1 {
    font-size: 56px;
  }
}

.hero-sub {
  font-size: 18px;
  font-weight: 400;
  color: var(--text-secondary);
  max-width: 560px;
  line-height: 1.65;
  margin-bottom: var(--space-10);
}

/* Primary CTA */
.btn-primary {
  display: inline-flex;
  align-items: center;
  background: var(--accent);
  color: #0F0F0F;
  font-family: var(--font);
  font-size: 16px;
  font-weight: 600;
  padding: 14px 28px;
  border-radius: var(--radius-full);
  border: none;
  cursor: pointer;
  transition: opacity var(--transition);
  text-decoration: none;
}

.btn-primary:hover {
  opacity: 0.88;
}

/* ============================================
   SECTION BASE
   ============================================ */
.section {
  padding: var(--space-20) 0;
  border-top: 1px solid var(--border);
}

.section-label {
  font-size: 12px;
  font-weight: 500;
  color: var(--text-muted);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: var(--space-4);
}

.section-title {
  font-size: 28px;
  font-weight: 700;
  letter-spacing: -0.025em;
  color: var(--text-primary);
  margin-bottom: var(--space-3);
  line-height: 1.2;
}

@media (min-width: 768px) {
  .section-title {
    font-size: 36px;
  }
}

.section-sub {
  font-size: 16px;
  color: var(--text-secondary);
  max-width: 540px;
  line-height: 1.65;
  margin-bottom: var(--space-12);
}

/* ============================================
   CARD GRID (3-col)
   ============================================ */
.card-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-4);
}

@media (min-width: 640px) {
  .card-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 900px) {
  .card-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

/* ============================================
   PROBLEM SECTION
   ============================================ */
.problem-card {
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
}

.problem-icon {
  font-size: 24px;
  margin-bottom: var(--space-4);
  line-height: 1;
}

.problem-card h3 {
  font-size: 16px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: var(--space-3);
  line-height: 1.3;
}

.problem-card p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.65;
}

/* ============================================
   HOW IT WORKS SECTION
   ============================================ */
.steps-list {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-2);
}

@media (min-width: 640px) {
  .steps-list {
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-4);
  }
}

.step {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
}

.step-num {
  font-size: 32px;
  font-weight: 700;
  color: var(--text-muted);
  line-height: 1;
  font-variant-numeric: tabular-nums;
}

.step h3 {
  font-size: 16px;
  font-weight: 600;
  color: var(--text-primary);
  line-height: 1.3;
}

.step p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.65;
}

/* Status dots in step copy */
.dot-red {
  display: inline-block;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--status-action);
  vertical-align: middle;
  margin-right: 2px;
}

.dot-amber {
  display: inline-block;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--status-progress);
  vertical-align: middle;
  margin-right: 2px;
}

/* ============================================
   BENEFITS SECTION
   ============================================ */
.benefit-card {
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
}

.benefit-check {
  font-size: 20px;
  margin-bottom: var(--space-4);
  line-height: 1;
  color: var(--status-done);
}

.benefit-card h3 {
  font-size: 16px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: var(--space-3);
  line-height: 1.3;
}

.benefit-card p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.65;
}

/* ============================================
   EARLY ACCESS CTA SECTION
   ============================================ */
.section-cta {
  background: var(--bg-surface);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  padding: var(--space-20) 0;
}

.section-cta .section-title {
  max-width: 480px;
}

.section-cta .section-sub {
  margin-bottom: var(--space-8);
}

.early-access-form {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  max-width: 400px;
}

@media (min-width: 640px) {
  .early-access-form {
    max-width: 460px;
  }
}

.early-access-form input[type="email"],
.early-access-form input[type="text"] {
  width: 100%;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-family: var(--font);
  font-size: 15px;
  padding: 12px 14px;
  outline: none;
  transition: border-color var(--transition);
}

.early-access-form input[type="email"]::placeholder,
.early-access-form input[type="text"]::placeholder {
  color: var(--text-muted);
}

.early-access-form input[type="email"]:focus,
.early-access-form input[type="text"]:focus {
  border-color: var(--text-muted);
}

.early-access-form button[type="submit"] {
  width: 100%;
  background: var(--accent);
  color: #0F0F0F;
  font-family: var(--font);
  font-size: 15px;
  font-weight: 600;
  padding: 13px 20px;
  border: none;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: opacity var(--transition);
}

.early-access-form button[type="submit"]:hover {
  opacity: 0.88;
}

.form-note {
  font-size: 12px;
  color: var(--text-muted);
  margin-top: var(--space-2);
}

/* ============================================
   FAQ SECTION
   ============================================ */
.faq-list {
  display: flex;
  flex-direction: column;
  gap: 0;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.faq-item {
  padding: var(--space-6);
  border-bottom: 1px solid var(--border);
}

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

.faq-item dt {
  font-size: 15px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: var(--space-3);
  line-height: 1.4;
}

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

/* ============================================
   FOOTER
   ============================================ */
.footer {
  padding: var(--space-12) 0;
  border-top: 1px solid var(--border);
}

.footer-inner {
  display: flex;
  flex-direction: column;
  gap: var(--space-5);
}

@media (min-width: 640px) {
  .footer-inner {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
  }
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: 15px;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: -0.02em;
}

.footer-brand svg {
  width: 18px;
  height: 18px;
}

.footer-copyright {
  font-size: 13px;
  color: var(--text-muted);
  margin-top: var(--space-1);
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-5);
  align-items: center;
}

.footer-links a {
  font-size: 13px;
  color: var(--text-secondary);
  transition: color var(--transition);
}

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

.footer-made {
  font-size: 12px;
  color: var(--text-muted);
  text-align: right;
}

@media (max-width: 639px) {
  .footer-made {
    text-align: left;
  }
}