/* ─────────────────────────────────────────────
   QUANTUM LIGHTING — Shared Design System
   ───────────────────────────────────────────── */

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

html { scroll-behavior: smooth; scroll-padding-top: 72px; overflow-x: hidden; }
@media (max-width: 768px) { html { scroll-padding-top: 64px; } }

:root {
  --accent:       #EAB409;
  --accent-dark:  #c49508;
  --accent-glow:  rgba(234,180,9,0.15);
  --bg:           #141618;
  --bg2:          #1a1d20;
  --bg3:          #1f2226;
  --bg4:          #252a2f;
  --border:       rgba(255,255,255,0.07);
  --text:         #f0f2f4;
  --muted:        #8a9099;
  --dim:          #5a6170;
  --white:        #ffffff;
  --radius:       4px;
  --radius-lg:    8px;
  --ease:         cubic-bezier(0.4,0,0.2,1);
  --t:            0.3s;
}

html { scroll-behavior: smooth; }
body { font-family: 'Inter', sans-serif; background: var(--bg); color: var(--text); line-height: 1.6; overflow-x: hidden; }

::-webkit-scrollbar { width: 5px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb { background: var(--accent); border-radius: 3px; }

/* ── TYPOGRAPHY ── */
h1,h2,h3,h4,h5 { font-family: 'Barlow', sans-serif; }

/* ── HEADER ── */
.site-header {
  position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
  height: 72px; padding: 0 56px;
  background: rgba(20,22,24,0.88);
  backdrop-filter: blur(24px);
  border-bottom: 1px solid var(--border);
  display: flex; align-items: center;
  transition: background var(--t) var(--ease);
}
.site-header.scrolled { background: rgba(20,22,24,0.98); }
.header-inner { display: flex; align-items: center; justify-content: space-between; width: 100%; max-width: 1440px; margin: 0 auto; }

/* LOGO */
.logo { display: flex; align-items: center; text-decoration: none; gap: 0; flex-shrink: 0; }
.logo svg { height: 44px; width: auto; }

/* NAV */
.nav-links { display: flex; align-items: center; gap: 2px; }
.nav-links a {
  color: var(--muted); text-decoration: none; font-size: 13px; font-weight: 500;
  padding: 8px 18px; border-radius: var(--radius); letter-spacing: 0.4px;
  transition: color var(--t), background var(--t); white-space: nowrap;
}
.nav-links a:hover { color: var(--white); background: rgba(255,255,255,0.05); }
.nav-links a.active { color: var(--accent); }

.nav-cta {
  background: var(--accent); color: white; border: none; padding: 10px 24px;
  font-size: 13px; font-weight: 600; letter-spacing: 0.4px; border-radius: var(--radius);
  cursor: pointer; transition: background var(--t), transform var(--t);
  font-family: 'Inter', sans-serif; text-decoration: none; display: inline-block;
  white-space: nowrap;
}
.nav-cta:hover { background: var(--accent-dark); transform: translateY(-1px); }

.menu-toggle { display: none; background: none; border: none; cursor: pointer; padding: 4px; flex-direction: column; gap: 5px; }
.menu-toggle span { display: block; width: 22px; height: 2px; background: var(--muted); transition: all var(--t); }
.mobile-nav { display: none; }

/* ── FOOTER ── */
.site-footer { background: var(--bg3); border-top: 1px solid var(--border); padding: 64px 56px 32px; margin-top: auto; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 48px; max-width: 1440px; margin: 0 auto 48px; }
.footer-brand p { font-size: 14px; color: var(--muted); line-height: 1.7; margin-top: 16px; max-width: 280px; }
.footer-socials { display: flex; gap: 10px; margin-top: 24px; }
.footer-social-btn {
  width: 36px; height: 36px; border-radius: var(--radius); border: 1px solid var(--border);
  display: flex; align-items: center; justify-content: center; cursor: pointer;
  transition: all var(--t); background: none;
}
.footer-social-btn:hover { border-color: var(--accent); background: var(--accent-glow); }
.footer-social-btn svg { width: 15px; height: 15px; stroke: var(--muted); fill: none; stroke-width: 2; }
.footer-social-btn:hover svg { stroke: var(--accent); }
.footer-col h4 { font-size: 11px; font-weight: 700; letter-spacing: 2px; text-transform: uppercase; color: var(--white); margin-bottom: 20px; font-family: 'Inter', sans-serif; }
.footer-col a { display: block; font-size: 13px; color: var(--muted); text-decoration: none; margin-bottom: 10px; transition: color var(--t); }
.footer-col a:hover { color: var(--accent); }
.footer-bottom { max-width: 1440px; margin: 0 auto; padding-top: 24px; border-top: 1px solid var(--border); display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 12px; }
.footer-bottom p { font-size: 12px; color: var(--dim); }
.footer-legal { display: flex; gap: 20px; }
.footer-legal a { font-size: 12px; color: var(--dim); text-decoration: none; transition: color var(--t); }
.footer-legal a:hover { color: var(--accent); }

/* ── BUTTONS ── */
.btn-primary {
  background: var(--accent); color: white; border: none;
  padding: 14px 32px; font-size: 14px; font-weight: 600; letter-spacing: 0.4px;
  border-radius: var(--radius); cursor: pointer; transition: all var(--t);
  font-family: 'Inter', sans-serif; text-decoration: none;
  display: inline-flex; align-items: center; gap: 8px;
}
.btn-primary:hover { background: var(--accent-dark); transform: translateY(-2px); box-shadow: 0 8px 28px rgba(234,180,9,0.3); }
.btn-primary svg { width: 16px; height: 16px; transition: transform var(--t); }
.btn-primary:hover svg { transform: translateX(3px); }

.btn-outline {
  background: transparent; color: var(--text); border: 1px solid var(--border);
  padding: 14px 32px; font-size: 14px; font-weight: 500; letter-spacing: 0.4px;
  border-radius: var(--radius); cursor: pointer; transition: all var(--t);
  font-family: 'Inter', sans-serif; text-decoration: none;
  display: inline-flex; align-items: center; gap: 8px;
}
.btn-outline:hover { border-color: var(--accent); color: var(--accent); background: var(--accent-glow); }

.btn-sm { padding: 10px 22px; font-size: 13px; }

/* ── SECTION TAGS ── */
.section-tag {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: 11px; letter-spacing: 2.5px; text-transform: uppercase;
  color: var(--accent); font-weight: 600; margin-bottom: 14px;
  font-family: 'Inter', sans-serif;
}
.section-tag::before { content: ''; width: 24px; height: 1px; background: var(--accent); }

.section-title { font-weight: 800; font-size: clamp(30px,3.5vw,50px); line-height: 1.1; color: var(--white); letter-spacing: -0.5px; margin-bottom: 14px; }
.section-sub { font-size: 15px; color: var(--muted); max-width: 540px; line-height: 1.75; }
.divider { width: 40px; height: 2px; background: var(--accent); margin: 18px 0; }

/* ── SECTIONS ── */
.section-pad { padding: 96px 56px; }
.section-pad-sm { padding: 72px 56px; }
.content-max { max-width: 1440px; margin: 0 auto; }
.bg-2 { background: var(--bg2); }
.bg-3 { background: var(--bg3); }

/* ── PAGE HERO ── */
.page-hero {
  padding-top: 144px; padding-bottom: 80px; padding-left: 56px; padding-right: 56px;
  background: var(--bg2); border-bottom: 1px solid var(--border); position: relative; overflow: hidden;
}
.page-hero::before {
  content: ''; position: absolute; inset: 0;
  background: radial-gradient(ellipse at 70% 50%, rgba(234,180,9,0.06) 0%, transparent 60%);
}
.page-hero-inner { max-width: 1440px; margin: 0 auto; position: relative; z-index: 1; }
.page-hero h1 { font-size: clamp(40px,5vw,72px); font-weight: 800; color: var(--white); letter-spacing: -1px; margin-bottom: 16px; line-height: 1.05; }
.page-hero p { font-size: 16px; color: var(--muted); max-width: 560px; line-height: 1.75; }
.page-hero .breadcrumb { display: flex; align-items: center; gap: 8px; font-size: 12px; color: var(--dim); margin-bottom: 24px; }
.page-hero .breadcrumb a { color: var(--muted); text-decoration: none; transition: color var(--t); }
.page-hero .breadcrumb a:hover { color: var(--accent); }
.page-hero .breadcrumb span { color: var(--dim); }

/* ── GRID DIVIDER ── */
.grid-line { display: grid; gap: 1px; background: var(--border); border: 1px solid var(--border); }

/* ── REVEAL ── */
.reveal { opacity: 0; transform: translateY(22px); transition: opacity 0.65s var(--ease), transform 0.65s var(--ease); }
.reveal.on { opacity: 1; transform: none; }
.d1 { transition-delay: 0.08s; } .d2 { transition-delay: 0.16s; } .d3 { transition-delay: 0.24s; } .d4 { transition-delay: 0.32s; } .d5 { transition-delay: 0.40s; }

/* ── RESPONSIVE ── */
@media (max-width: 1024px) {
  .site-header { padding: 0 32px; }
  .section-pad { padding: 72px 32px; }
  .section-pad-sm { padding: 56px 32px; }
  .page-hero { padding: 120px 32px 64px; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
  .site-footer { padding: 56px 32px 28px; }
}
@media (max-width: 768px) {
  .site-header { padding: 0 20px; height: 64px; }
  .nav-links { display: none; }
  .nav-cta { display: none; }
  .menu-toggle { display: flex; }
  .mobile-nav.open { display: flex; flex-direction: column; position: fixed; top: 64px; left: 0; right: 0; background: var(--bg3); border-bottom: 1px solid var(--border); padding: 16px 20px 24px; z-index: 999; gap: 4px; }
  .mobile-nav a { color: var(--muted); text-decoration: none; font-size: 15px; padding: 12px 0; border-bottom: 1px solid var(--border); transition: color var(--t); }
  .mobile-nav a.active { color: var(--accent); }
  .mobile-nav a:last-child { border-bottom: none; }
  .section-pad { padding: 52px 20px; }
  .section-pad-sm { padding: 36px 20px; }
  .page-hero { padding: 100px 20px 48px; }
  .page-hero h1 { font-size: clamp(30px,8vw,52px); letter-spacing: -.5px; }
  .page-hero p { font-size: 14px; }
  .section-title { font-size: clamp(26px,7vw,40px); }
  .section-sub { font-size: 14px; }
  /* Buttons full-width on small forms */
  .btn-primary, .btn-outline { padding: 12px 24px; font-size: 13px; }
  /* Footer */
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
  .footer-brand { grid-column: 1 / -1; }
  .site-footer { padding: 40px 20px 24px; }
  .footer-bottom { flex-direction: column; text-align: center; gap: 10px; }
  .footer-legal { justify-content: center; flex-wrap: wrap; gap: 14px; }
}
@media (max-width: 480px) {
  .site-header { padding: 0 16px; }
  .section-pad { padding: 44px 16px; }
  .section-pad-sm { padding: 32px 16px; }
  .page-hero { padding: 90px 16px 40px; }
  .footer-grid { grid-template-columns: 1fr; }
  .site-footer { padding: 36px 16px 20px; }
}