/* Bureau Design System v2 */
:root {
  --primary: #0A0A0A;
  --primary-fg: #FFFFFF;
  --accent: #F5A623;
  --accent-dark: #D4891A;
  --accent-glow: rgba(245,166,35,0.15);
  --surface-1: #111111;
  --surface-2: #1A1A1A;
  --surface-3: #222222;
  --border: rgba(255,255,255,0.08);
  --border-hover: rgba(245,166,35,0.4);
  --text-1: #FFFFFF;
  --text-2: #A0A0A0;
  --text-3: #555555;
  --success: #22C55E;
  --error: #EF4444;
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --shadow-card: 0 1px 3px rgba(0,0,0,0.5), 0 20px 60px rgba(0,0,0,0.3);
  --shadow-accent: 0 4px 24px rgba(245,166,35,0.25);
  --transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
  background: var(--primary);
  color: var(--text-1);
  font-family: -apple-system, BlinkMacSystemFont, 'Inter', 'Segoe UI', sans-serif;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  line-height: 1.6;
  overflow-x: hidden;
}
::selection { background: rgba(245,166,35,0.25); color: #fff; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; border-radius: 4px; }
img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; transition: var(--transition); }
button { cursor: pointer; border: none; background: none; font-family: inherit; }

/* TYPOGRAPHY */
h1 { font-size: clamp(36px, 6vw, 64px); font-weight: 800; letter-spacing: -0.03em; line-height: 1.05; }
h2 { font-size: clamp(28px, 4vw, 44px); font-weight: 700; letter-spacing: -0.02em; line-height: 1.15; }
h3 { font-size: clamp(20px, 2.5vw, 26px); font-weight: 600; letter-spacing: -0.01em; }
h4 { font-size: 18px; font-weight: 600; }
p { font-size: 16px; line-height: 1.7; color: var(--text-2); }

/* BUTTONS */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 14px 28px; border-radius: var(--radius-md);
  font-size: 15px; font-weight: 650; letter-spacing: -0.01em;
  transition: var(--transition); white-space: nowrap;
  position: relative; overflow: hidden;
}
.btn-primary {
  background: var(--accent); color: #0A0A0A;
  box-shadow: var(--shadow-accent);
}
.btn-primary:hover {
  background: var(--accent-dark); transform: translateY(-2px);
  box-shadow: 0 8px 32px rgba(245,166,35,0.35);
}
.btn-primary:active { transform: translateY(0); }
.btn-secondary {
  background: transparent; color: var(--text-1);
  border: 1.5px solid var(--border); padding: 13px 27px;
}
.btn-secondary:hover {
  border-color: var(--accent); color: var(--accent);
  background: var(--accent-glow);
}
.btn-ghost { background: transparent; color: var(--text-2); padding: 10px 16px; }
.btn-ghost:hover { color: var(--text-1); }
.btn-sm { padding: 10px 20px; font-size: 14px; }
.btn-lg { padding: 18px 36px; font-size: 17px; }

/* CARDS */
.card {
  background: var(--surface-1); border: 1px solid var(--border);
  border-radius: var(--radius-lg); padding: 32px;
  transition: var(--transition);
}
.card:hover {
  border-color: var(--border-hover);
  box-shadow: var(--shadow-accent);
  transform: translateY(-2px);
}

/* BADGE */
.badge {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 6px 14px; background: rgba(245,166,35,0.1);
  border: 1px solid rgba(245,166,35,0.2); border-radius: 100px;
  font-size: 13px; font-weight: 600; color: var(--accent);
  letter-spacing: 0.01em;
}

/* SECTIONS */
section { padding: 96px 0; }
.container { max-width: 1160px; margin: 0 auto; padding: 0 24px; }
.section-header {
  text-align: center; margin-bottom: 56px;
  display: flex; flex-direction: column; align-items: center; gap: 20px;
}

/* FADE */
.fade-up {
  opacity: 0; transform: translateY(24px);
  transition: opacity 0.55s ease, transform 0.55s ease;
}
.fade-up.visible { opacity: 1; transform: translateY(0); }

/* TEXT UTILS */
.text-accent { color: var(--accent); }
.text-gradient {
  background: linear-gradient(135deg, #FFFFFF 0%, #F5A623 100%);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
}

/* NAV */
.nav {
  position: sticky; top: 0; z-index: 100;
  background: rgba(10,10,10,0.92); backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border); height: 64px;
  display: flex; align-items: center;
}
.nav-inner { display: flex; align-items: center; gap: 32px; }
.nav-logo {
  display: flex; align-items: center; gap: 8px;
  font-size: 20px; font-weight: 800; color: var(--text-1);
  letter-spacing: -0.02em; margin-right: auto;
}
.logo-square { color: var(--accent); font-size: 16px; }
.nav-links { display: flex; align-items: center; gap: 8px; list-style: none; }
.nav-link {
  padding: 8px 14px; color: var(--text-2); font-size: 14px;
  font-weight: 500; border-radius: var(--radius-sm); transition: var(--transition);
}
.nav-link:hover { color: var(--text-1); background: var(--surface-2); }
.nav-actions { display: flex; align-items: center; gap: 8px; }
.nav-hamburger { display: none; }
@media (max-width: 768px) {
  .nav-links, .nav-actions .btn-ghost { display: none; }
  .nav-hamburger {
    display: flex; flex-direction: column; gap: 5px; padding: 8px;
    cursor: pointer; background: none; border: none;
  }
  .nav-hamburger span {
    display: block; width: 22px; height: 2px;
    background: var(--text-1); border-radius: 2px; transition: var(--transition);
  }
}

/* HERO */
.hero {
  position: relative; min-height: calc(100vh - 64px);
  display: flex; align-items: center; overflow: hidden; padding: 80px 0 60px;
}
.hero-bg { position: absolute; inset: 0; pointer-events: none; }
.hero-glow {
  position: absolute; top: -20%; left: 50%; transform: translateX(-50%);
  width: 800px; height: 800px;
  background: radial-gradient(ellipse, rgba(245,166,35,0.06) 0%, transparent 70%);
}
.hero-grid-bg {
  position: absolute; inset: 0;
  background-image: linear-gradient(rgba(255,255,255,0.02) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.02) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse 80% 80% at 50% 50%, black 0%, transparent 100%);
  -webkit-mask-image: radial-gradient(ellipse 80% 80% at 50% 50%, black 0%, transparent 100%);
}
.hero-content {
  position: relative; z-index: 1; display: flex; flex-direction: column;
  align-items: center; text-align: center; gap: 32px;
}
.hero-title { max-width: 800px; }
.hero-subtitle { font-size: 18px; color: var(--text-2); max-width: 540px; line-height: 1.65; }
.hero-ctas { display: flex; gap: 12px; flex-wrap: wrap; justify-content: center; }
.hero-social-proof {
  display: flex; align-items: center; gap: 12px;
  color: var(--text-2); font-size: 14px;
}
.hero-social-proof strong { color: var(--text-1); }
.avatars { display: flex; }
.avatar {
  width: 32px; height: 32px; border-radius: 50%; border: 2px solid var(--primary);
  display: flex; align-items: center; justify-content: center;
  font-size: 12px; font-weight: 700; color: white; margin-left: -8px;
}
.avatar:first-child { margin-left: 0; }
.hero-stats {
  display: flex; align-items: center;
  background: var(--surface-1); border: 1px solid var(--border);
  border-radius: var(--radius-xl); padding: 20px 40px;
}
.stat { display: flex; flex-direction: column; align-items: center; padding: 0 32px; }
.stat-value { font-size: 28px; font-weight: 800; color: var(--accent); letter-spacing: -0.02em; }
.stat-label { font-size: 13px; color: var(--text-3); margin-top: 2px; }
.stat-divider { width: 1px; height: 40px; background: var(--border); }
@media (max-width: 768px) {
  .hero-stats { padding: 16px 20px; flex-wrap: wrap; gap: 16px; }
  .stat { padding: 0 16px; }
  .stat-divider { display: none; }
  .hero-ctas .btn-lg { width: 100%; justify-content: center; }
}

/* FEATURES */
.features-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.feature-card { position: relative; overflow: hidden; }
.feature-number {
  font-size: 80px; font-weight: 900; color: var(--accent); opacity: 0.06;
  position: absolute; top: -16px; right: 16px; line-height: 1;
  letter-spacing: -0.05em; pointer-events: none;
}
.feature-icon {
  width: 56px; height: 56px; background: rgba(245,166,35,0.08);
  border: 1px solid rgba(245,166,35,0.15); border-radius: var(--radius-md);
  display: flex; align-items: center; justify-content: center; margin-bottom: 24px;
}
.feature-card h3 { margin-bottom: 12px; }
@media (max-width: 900px) { .features-grid { grid-template-columns: 1fr; } }

/* TESTIMONIALS */
.testimonials-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; margin-bottom: 64px; }
.testimonial-card { display: flex; flex-direction: column; gap: 20px; }
.stars { color: var(--accent); font-size: 16px; letter-spacing: 2px; }
.testimonial-text { color: var(--text-2); font-size: 15px; line-height: 1.7; flex: 1; }
.testimonial-author { display: flex; align-items: center; gap: 12px; }
.author-avatar {
  width: 44px; height: 44px; border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: 14px; font-weight: 700; color: white; flex-shrink: 0;
}
.author-name { font-size: 14px; font-weight: 600; }
.author-role { font-size: 13px; color: var(--text-3); margin-top: 2px; }
.stats-row {
  display: flex; justify-content: center; gap: 80px; padding: 48px;
  background: var(--surface-1); border: 1px solid var(--border);
  border-radius: var(--radius-xl);
}
.stat-item { text-align: center; }
.stat-num { display: block; font-size: 48px; font-weight: 800; color: var(--accent); letter-spacing: -0.03em; line-height: 1; }
.stat-desc { font-size: 14px; color: var(--text-2); margin-top: 8px; display: block; }
@media (max-width: 900px) {
  .testimonials-grid { grid-template-columns: 1fr; }
  .stats-row { gap: 40px; flex-wrap: wrap; padding: 32px 24px; }
}

/* FAQ */
.faq-item { border: 1px solid var(--border); border-radius: var(--radius-md); margin-bottom: 8px; overflow: hidden; }
.faq-item.open { border-color: var(--border-hover); }
.faq-question {
  width: 100%; padding: 20px 24px; display: flex; justify-content: space-between;
  align-items: center; font-size: 16px; font-weight: 600; color: var(--text-1);
  background: var(--surface-1); cursor: pointer; border: none; font-family: inherit;
  text-align: left; transition: var(--transition);
}
.faq-question:hover { background: var(--surface-2); }
.faq-question svg { transition: transform 0.2s; flex-shrink: 0; color: var(--text-3); }
.faq-item.open .faq-question svg { transform: rotate(180deg); }
.faq-answer { max-height: 0; overflow: hidden; transition: max-height 0.3s ease; }
.faq-item.open .faq-answer { max-height: 300px; }
.faq-answer p { padding: 0 24px 20px; font-size: 15px; color: var(--text-2); line-height: 1.7; }

/* FOOTER */
.footer { padding: 64px 0 32px; border-top: 1px solid var(--border); }
.footer-grid { display: grid; grid-template-columns: 1.5fr 2fr; gap: 64px; margin-bottom: 48px; }
.footer-brand p { color: var(--text-2); font-size: 14px; margin-top: 12px; line-height: 1.6; }
.trust-badges { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 20px; }
.trust-badge {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 6px 12px; background: var(--surface-1); border: 1px solid var(--border);
  border-radius: 100px; font-size: 12px; color: var(--text-2); font-weight: 500;
}
.footer-links { display: grid; grid-template-columns: repeat(3, 1fr); gap: 32px; }
.footer-links h4 { font-size: 13px; color: var(--text-3); text-transform: uppercase; letter-spacing: 0.06em; margin-bottom: 16px; }
.footer-links a { display: block; font-size: 14px; color: var(--text-2); padding: 4px 0; transition: var(--transition); }
.footer-links a:hover { color: var(--text-1); }
.footer-bottom { padding-top: 32px; border-top: 1px solid var(--border); font-size: 13px; color: var(--text-3); }
@media (max-width: 768px) {
  .footer-grid { grid-template-columns: 1fr; gap: 40px; }
  .footer-links { grid-template-columns: 1fr 1fr; }
}

/* SCROLL PROGRESS */
.scroll-progress {
  position: fixed; top: 0; left: 0; height: 3px;
  background: var(--accent); z-index: 9999;
  transition: width 0.1s linear; width: 0;
}

/* TOAST */
.toast-notification {
  position: fixed; bottom: 24px; right: 24px;
  background: var(--surface-2); border: 1px solid var(--border);
  color: var(--text-1); padding: 14px 20px;
  border-radius: var(--radius-md); font-size: 14px; font-weight: 500;
  z-index: 9999; transform: translateY(20px); opacity: 0;
  transition: all 0.3s ease; box-shadow: var(--shadow-card);
}
.toast-notification.show { transform: translateY(0); opacity: 1; }
.toast-notification.toast-success { border-color: rgba(34,197,94,0.3); }
.toast-notification.toast-error { border-color: rgba(239,68,68,0.3); }

/* PRODUCT MOCKUP */
.product-mockup {
  width: 100%; max-width: 720px;
  background: var(--surface-1); border: 1px solid var(--border);
  border-radius: var(--radius-lg); overflow: hidden;
  box-shadow: 0 30px 80px rgba(0,0,0,0.5), 0 0 0 1px rgba(255,255,255,0.03);
}
.mockup-topbar {
  display: flex; align-items: center; gap: 12px;
  padding: 12px 16px; background: var(--surface-2);
  border-bottom: 1px solid var(--border);
}
.mockup-dots { display: flex; gap: 6px; }
.mockup-dots span { width: 10px; height: 10px; border-radius: 50%; background: var(--surface-3); }
.mockup-dots span:first-child { background: #EF4444; }
.mockup-dots span:nth-child(2) { background: #F5A623; }
.mockup-dots span:last-child { background: #22C55E; }
.mockup-url {
  flex: 1; text-align: center; font-size: 11px; color: var(--text-3);
  background: var(--primary); padding: 4px 12px; border-radius: 6px;
}
.mockup-body { display: flex; min-height: 260px; }
.mockup-sidebar {
  width: 180px; background: var(--surface-2); border-right: 1px solid var(--border);
  padding: 16px 12px; display: flex; flex-direction: column; gap: 4px;
}
.mockup-logo {
  font-size: 13px; font-weight: 800; color: var(--accent);
  padding: 8px 10px; margin-bottom: 12px; letter-spacing: -0.02em;
}
.mockup-nav-item {
  display: flex; align-items: center; gap: 8px;
  padding: 8px 10px; border-radius: 6px; font-size: 12px;
  color: var(--text-3); transition: var(--transition);
}
.mockup-nav-item.active { background: var(--accent-glow); color: var(--accent); }
.mockup-main { flex: 1; padding: 20px; }
.mockup-card {
  background: var(--surface-2); border: 1px solid var(--border);
  border-radius: var(--radius-md); padding: 20px; display: flex;
  flex-direction: column; gap: 16px;
}
.mockup-card-header { display: flex; justify-content: space-between; align-items: flex-start; }
.mockup-card-title { font-size: 14px; font-weight: 700; color: var(--text-1); }
.mockup-card-sub { font-size: 11px; color: var(--text-3); margin-top: 4px; }
.mockup-badge-done {
  padding: 4px 10px; background: rgba(34,197,94,0.1); border: 1px solid rgba(34,197,94,0.2);
  border-radius: 100px; font-size: 11px; font-weight: 600; color: var(--success);
  white-space: nowrap;
}
.mockup-preview { display: flex; flex-direction: column; gap: 8px; }
.mockup-line { height: 8px; background: var(--surface-3); border-radius: 4px; }
.mockup-actions { display: flex; gap: 8px; }
.mockup-btn {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 8px 14px; background: var(--accent); color: #0A0A0A;
  border-radius: 6px; font-size: 11px; font-weight: 700;
}
.mockup-btn-outline {
  padding: 8px 14px; border: 1px solid var(--border);
  border-radius: 6px; font-size: 11px; font-weight: 600; color: var(--text-2);
}
@media (max-width: 600px) {
  .mockup-sidebar { display: none; }
  .product-mockup { max-width: 100%; }
}