/* =========================================================
   OSCS PREMIUM WEBSITE — DESIGN SYSTEM
   Code Language: English | Content: ES/EN Bilingual
   ========================================================= */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800;900&display=swap');

:root {
  --void: #030508;
  --navy-900: #070b14;
  --navy-800: #0d1321;
  --navy-700: #131b2e;
  --surface: #0f1623;
  --surface-hover: #161f33;
  --gold: #d4af37;
  --gold-bright: #f0c94e;
  --gold-dim: #8a7020;
  --text-primary: #f8fafc;
  --text-secondary: #cbd5e1;
  --text-muted: #64748b;
  --accent-blue: #3b82f6;
  --accent-green: #10b981;
  --accent-red: #ef4444;
  --border-subtle: rgba(212,175,55,0.08);
  --border-medium: rgba(212,175,55,0.18);
  --radius: 16px;
  --radius-sm: 10px;
  --shadow-elevated: 0 24px 48px rgba(0,0,0,0.5);
  --shadow-gold: 0 0 30px rgba(212,175,55,0.12);
  --transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
  --font: 'Inter', system-ui, -apple-system, sans-serif;
}

* { margin:0; padding:0; box-sizing:border-box; }
html { scroll-behavior:smooth; }
body {
  font-family: var(--font);
  background: var(--void);
  color: var(--text-primary);
  line-height:1.6;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}

/* Scrollbar */
::-webkit-scrollbar { width:6px; }
::-webkit-scrollbar-track { background:var(--navy-900); }
::-webkit-scrollbar-thumb { background:var(--gold-dim); border-radius:3px; }

/* Selection */
::selection { background:rgba(212,175,55,0.3); color:var(--text-primary); }

/* Utility */
.container { width:100%; max-width:1200px; margin:0 auto; padding:0 28px; }
.hidden { display:none !important; }

/* Typography */
h1,h2,h3,h4 { font-weight:800; line-height:1.1; letter-spacing:-0.03em; }
h1 { font-size:clamp(2.8rem, 6vw, 5rem); }
h2 { font-size:clamp(2rem, 4vw, 3.2rem); }
h3 { font-size:clamp(1.3rem, 2.5vw, 1.7rem); }
p { color:var(--text-secondary); max-width:60ch; font-size:1.05rem; }

/* Links */
a { color:var(--gold); text-decoration:none; transition:var(--transition); }
a:hover { color:var(--gold-bright); }

/* =========================================================
   HEADER — Glassmorphism
   ========================================================= */
.site-header {
  position:fixed; top:0; left:0; right:0; z-index:1000;
  background:rgba(7,11,20,0.6);
  backdrop-filter:blur(20px) saturate(150%);
  border-bottom:1px solid var(--border-subtle);
  transition:var(--transition);
}
.site-header.scrolled {
  background:rgba(7,11,20,0.9);
  box-shadow:0 4px 30px rgba(0,0,0,0.3);
}
.site-header .nav-inner {
  display:flex; align-items:center; justify-content:space-between;
  height:80px; max-width:1200px; margin:0 auto; padding:0 28px;
}
.site-header .brand {
  display:flex; align-items:center; gap:14px; font-weight:900; font-size:1.35rem;
  color:var(--text-primary); letter-spacing:-0.02em;
}
.site-header .brand img {
  height:44px; width:44px; border-radius:50%; object-fit:cover;
  border:2.5px solid var(--gold); box-shadow:0 0 15px rgba(212,175,55,0.2);
}
.site-header .brand small {
  display:block; font-size:0.6rem; font-weight:600; color:var(--text-muted);
  text-transform:uppercase; letter-spacing:0.12em; margin-top:2px;
}

/* Navigation Links */
.nav-links { display:flex; align-items:center; gap:8px; }
.nav-links a {
  position:relative; padding:10px 18px; border-radius:var(--radius-sm);
  color:var(--text-secondary); font-size:0.9rem; font-weight:600;
  overflow:hidden; transition:var(--transition);
}
.nav-links a::before {
  content:''; position:absolute; inset:0; background:linear-gradient(135deg, rgba(212,175,55,0.1), transparent);
  opacity:0; transition:var(--transition); border-radius:inherit;
}
.nav-links a:hover::before, .nav-links a.active::before { opacity:1; }
.nav-links a:hover, .nav-links a.active { color:var(--gold); }
.nav-links a.active { box-shadow:0 0 0 1px var(--border-medium); }

/* Actions */
.nav-actions { display:flex; align-items:center; gap:14px; }
.lang-toggle {
  background:transparent; border:1.5px solid var(--border-subtle); color:var(--text-muted);
  padding:8px 14px; border-radius:var(--radius-sm); cursor:pointer; font-weight:700;
  font-size:0.8rem; transition:var(--transition); font-family:inherit;
}
.lang-toggle:hover { border-color:var(--gold); color:var(--gold); }
.menu-toggle {
  display:none; background:none; border:none; color:var(--text-primary);
  font-size:1.6rem; cursor:pointer;
}

/* =========================================================
   HERO — Particle Canvas + Split Text
   ========================================================= */
.hero {
  position:relative; min-height:100vh; display:flex; align-items:center;
  overflow:hidden; padding-top:80px;
}
#particle-canvas {
  position:absolute; inset:0; z-index:0; opacity:0.6;
}
.hero::after {
  content:''; position:absolute; inset:0;
  background:radial-gradient(ellipse at 30% 50%, rgba(212,175,55,0.06) 0%, transparent 60%),
             radial-gradient(ellipse at 70% 20%, rgba(59,130,246,0.04) 0%, transparent 50%);
  pointer-events:none; z-index:1;
}
.hero .hero-content {
  position:relative; z-index:2; max-width:720px;
}
.hero-eyebrow {
  display:inline-flex; align-items:center; gap:10px;
  padding:8px 20px; border-radius:99px;
  background:rgba(212,175,55,0.08); border:1px solid var(--border-subtle);
  color:var(--gold); font-size:0.78rem; font-weight:800;
  text-transform:uppercase; letter-spacing:0.15em; margin-bottom:28px;
  backdrop-filter:blur(8px);
}
.hero-eyebrow::before {
  content:''; width:6px; height:6px; border-radius:50%; background:var(--gold);
  box-shadow:0 0 8px var(--gold); animation:pulse 2s infinite;
}
@keyframes pulse { 0%,100%{opacity:1} 50%{opacity:0.4} }

/* Split Text Animation */
.split-text .char {
  display:inline-block; opacity:0; transform:translateY(60px) rotateX(45deg);
  animation:textReveal 0.8s cubic-bezier(0.16,1,0.3,1) forwards;
}
@keyframes textReveal {
  to { opacity:1; transform:translateY(0) rotateX(0); }
}

.hero h1 .accent { color:var(--gold); display:inline; }
.hero .hero-lead {
  font-size:clamp(1.1rem, 2vw, 1.35rem); margin:28px 0 40px;
  color:var(--text-secondary); line-height:1.7;
}
.hero-cta { display:flex; gap:18px; flex-wrap:wrap; }

/* =========================================================
   BUTTONS — Magnetic + Gradient
   ========================================================= */
.btn {
  display:inline-flex; align-items:center; justify-content:center; gap:10px;
  padding:14px 32px; border-radius:var(--radius-sm); font-weight:700;
  font-size:0.95rem; cursor:pointer; border:none; position:relative;
  overflow:hidden; transition:var(--transition); font-family:inherit;
  letter-spacing:0.02em;
}
.btn::after {
  content:''; position:absolute; inset:0;
  background:linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
  transform:translateX(-100%); transition:0.6s;
}
.btn:hover::after { transform:translateX(100%); }
.btn:hover { transform:translateY(-3px); }

.btn-primary {
  background:linear-gradient(135deg, var(--gold), var(--gold-dim));
  color:var(--void); box-shadow:0 8px 24px rgba(212,175,55,0.25);
}
.btn-primary:hover { box-shadow:0 12px 32px rgba(212,175,55,0.4); }

.btn-secondary {
  background:transparent; color:var(--text-primary);
  border:1.5px solid var(--border-medium); box-shadow:0 0 0 rgba(212,175,55,0);
}
.btn-secondary:hover {
  border-color:var(--gold); box-shadow:var(--shadow-gold); color:var(--gold);
}

/* =========================================================
   STAT BAR
   ========================================================= */
.statbar {
  position:relative; background:linear-gradient(180deg, var(--navy-900), var(--navy-800));
  border-top:1px solid var(--border-subtle); border-bottom:1px solid var(--border-subtle);
  padding:56px 0;
}
.statbar::before {
  content:''; position:absolute; top:0; left:0; right:0; height:1px;
  background:linear-gradient(90deg, transparent, var(--gold-dim), transparent);
}
.statbar-grid { display:grid; grid-template-columns:repeat(auto-fit, minmax(200px, 1fr)); gap:32px; }
.stat-item { text-align:center; position:relative; }
.stat-item:not(:last-child)::after {
  content:''; position:absolute; right:0; top:50%; transform:translateY(-50%);
  height:40px; width:1px; background:var(--border-subtle);
}
.stat-item .stat-number {
  font-size:2.6rem; font-weight:900; color:var(--gold);
  line-height:1; display:block; margin-bottom:8px;
  background:linear-gradient(135deg, var(--gold-bright), var(--gold));
  -webkit-background-clip:text; -webkit-text-fill-color:transparent;
}
.stat-item .stat-label {
  font-size:0.8rem; color:var(--text-muted); text-transform:uppercase;
  letter-spacing:0.1em; font-weight:600;
}

/* =========================================================
   SECTIONS
   ========================================================= */
.section { padding:120px 0; position:relative; }
.section-alt { background:var(--navy-900); }

.section-header { text-align:center; max-width:650px; margin:0 auto 72px; }
.section-kicker {
  display:inline-block; color:var(--gold); font-weight:800; font-size:0.75rem;
  text-transform:uppercase; letter-spacing:0.2em; margin-bottom:16px;
}
.section-title { margin-bottom:16px; }
.section-desc { color:var(--text-muted); font-size:1.1rem; margin:0 auto; }

/* =========================================================
   CARDS — 3D Tilt + Spotlight
   ========================================================= */
.cards-grid { display:grid; grid-template-columns:repeat(auto-fit, minmax(300px, 1fr)); gap:24px; }

.card-3d {
  position:relative; background:var(--surface); border:1px solid var(--border-subtle);
  border-radius:var(--radius); padding:36px; overflow:hidden;
  transition:var(--transition); transform-style:preserve-3d;
  cursor:default;
}
.card-3d::before {
  content:''; position:absolute; inset:0; border-radius:inherit;
  background:radial-gradient(600px circle at var(--mouse-x,50%) var(--mouse-y,50%), rgba(212,175,55,0.08), transparent 40%);
  opacity:0; transition:opacity 0.4s; pointer-events:none; z-index:1;
}
.card-3d:hover::before { opacity:1; }
.card-3d:hover {
  transform:translateY(-8px) translateZ(20px);
  border-color:var(--border-medium);
  box-shadow:var(--shadow-elevated), var(--shadow-gold);
}

.card-icon {
  width:52px; height:52px; border-radius:var(--radius-sm);
  background:linear-gradient(135deg, rgba(212,175,55,0.12), rgba(212,175,55,0.04));
  display:flex; align-items:center; justify-content:center; margin-bottom:24px;
  border:1px solid var(--border-subtle); position:relative; z-index:2;
}
.card-icon svg { width:24px; height:24px; stroke:var(--gold); fill:none; stroke-width:1.8; }
.card-3d h3 { margin-bottom:12px; font-size:1.2rem; position:relative; z-index:2; }
.card-3d p { font-size:0.92rem; color:var(--text-muted); position:relative; z-index:2; }

/* =========================================================
   SPLIT LAYOUT
   ========================================================= */
.split-layout { display:grid; grid-template-columns:1fr 1fr; gap:64px; align-items:center; }
.split-content { max-width:520px; }
.split-content .btn { margin-top:28px; }

.glass-panel {
  background:rgba(15,22,35,0.7); border:1px solid var(--border-subtle);
  border-radius:var(--radius); padding:40px; backdrop-filter:blur(16px);
  position:relative; overflow:hidden;
}
.glass-panel::before {
  content:''; position:absolute; top:0; left:0; right:0; height:1px;
  background:linear-gradient(90deg, transparent, var(--gold-dim), transparent);
}
.glass-panel h3 { color:var(--gold); margin-bottom:24px; font-size:1.3rem; }

/* Checklist */
.checklist { list-style:none; }
.checklist li {
  display:flex; align-items:flex-start; gap:14px; margin-bottom:18px;
  color:var(--text-secondary); font-size:0.95rem; line-height:1.5;
}
.checklist li svg {
  width:22px; height:22px; stroke:var(--accent-green); fill:none;
  flex-shrink:0; margin-top:2px; stroke-width:2.5;
}

/* =========================================================
   CHIPS
   ========================================================= */
.chips-row { display:flex; flex-wrap:wrap; gap:14px; justify-content:center; }
.chip-item {
  padding:12px 24px; border-radius:99px; background:var(--surface);
  border:1px solid var(--border-subtle); font-size:0.9rem;
  color:var(--text-secondary); transition:var(--transition); cursor:default;
  font-weight:500;
}
.chip-item:hover {
  border-color:var(--gold); color:var(--gold);
  transform:translateY(-3px); box-shadow:var(--shadow-gold);
}

/* =========================================================
   CTA BAND
   ========================================================= */
.cta-band {
  position:relative; background:linear-gradient(135deg, rgba(212,175,55,0.06), rgba(59,130,246,0.03));
  border:1px solid var(--border-subtle); border-radius:var(--radius);
  padding:72px 48px; text-align:center; overflow:hidden;
}
.cta-band::before {
  content:''; position:absolute; top:-50%; left:-20%; width:600px; height:600px;
  background:radial-gradient(circle, rgba(212,175,55,0.05) 0%, transparent 60%);
  pointer-events:none;
}
.cta-band h2 { position:relative; margin-bottom:16px; }
.cta-band p { position:relative; margin:0 auto 32px; color:var(--text-muted); }

/* =========================================================
   PAGE BANNER
   ========================================================= */
.page-banner {
  padding:160px 0 80px; background:var(--navy-900);
  border-bottom:1px solid var(--border-subtle); position:relative; overflow:hidden;
}
.page-banner::before {
  content:''; position:absolute; top:-30%; right:-10%; width:700px; height:700px;
  background:radial-gradient(circle, rgba(212,175,55,0.05) 0%, transparent 60%);
}
.page-banner h1 { margin-bottom:16px; position:relative; }
.page-banner p { color:var(--text-muted); max-width:560px; position:relative; }
.breadcrumbs { margin-top:24px; font-size:0.85rem; color:var(--text-muted); position:relative; }
.breadcrumbs a { color:var(--text-muted); }
.breadcrumbs a:hover { color:var(--gold); }

/* =========================================================
   OFFICE CARDS
   ========================================================= */
.offices-grid { display:grid; grid-template-columns:repeat(auto-fit, minmax(340px, 1fr)); gap:24px; }
.office-card {
  background:var(--surface); border:1px solid var(--border-subtle);
  border-radius:var(--radius); overflow:hidden; transition:var(--transition);
}
.office-card:hover { border-color:var(--border-medium); box-shadow:var(--shadow-elevated); }
.office-card iframe { width:100%; height:260px; border:none; filter:grayscale(50%) contrast(1.1); }
.office-card .office-body { padding:32px; }
.office-card h3 {
  display:flex; align-items:center; gap:12px; margin-bottom:20px;
  font-size:1.15rem;
}
.office-card h3 svg { width:20px; height:20px; stroke:var(--gold); fill:none; }
.office-row {
  display:flex; align-items:center; gap:12px; margin-bottom:14px;
  color:var(--text-secondary); font-size:0.9rem;
}
.office-row svg { width:18px; height:18px; stroke:var(--gold); fill:none; flex-shrink:0; }

/* =========================================================
   FORMS
   ========================================================= */
.form-card {
  background:var(--surface); border:1px solid var(--border-subtle);
  border-radius:var(--radius); padding:48px;
}
.form-group { margin-bottom:24px; }
.form-group label {
  display:block; font-size:0.85rem; font-weight:700; color:var(--text-secondary);
  margin-bottom:10px; text-transform:uppercase; letter-spacing:0.05em;
}
.form-group label .required { color:var(--accent-red); }
.form-input {
  width:100%; padding:14px 18px; background:var(--navy-800);
  border:1.5px solid var(--border-subtle); border-radius:var(--radius-sm);
  color:var(--text-primary); font-family:inherit; font-size:0.95rem;
  transition:var(--transition);
}
.form-input:focus {
  outline:none; border-color:var(--gold);
  box-shadow:0 0 0 4px rgba(212,175,55,0.08);
}
textarea.form-input { min-height:140px; resize:vertical; }
select.form-input { cursor:pointer; appearance:none; }
.form-row { display:grid; grid-template-columns:1fr 1fr; gap:24px; }

.form-success {
  display:none; margin-top:20px; padding:16px; border-radius:var(--radius-sm);
  background:rgba(16,185,129,0.08); border:1px solid rgba(16,185,129,0.25);
  color:var(--accent-green); font-size:0.95rem;
}
.form-note { font-size:0.8rem; color:var(--text-muted); margin-top:16px; }

/* =========================================================
   FOOTER
   ========================================================= */
.site-footer {
  background:var(--navy-900); border-top:1px solid var(--border-subtle);
  padding:80px 0 0; position:relative;
}
.site-footer::before {
  content:''; position:absolute; top:0; left:0; right:0; height:1px;
  background:linear-gradient(90deg, transparent, var(--gold-dim), transparent);
}
.footer-grid { display:grid; grid-template-columns:2fr 1fr 1fr 1fr; gap:48px; margin-bottom:64px; }
.footer-brand { display:flex; align-items:center; gap:14px; margin-bottom:20px; font-weight:900; font-size:1.2rem; }
.footer-brand img { height:48px; width:48px; border-radius:50%; border:2px solid var(--gold); }
.footer-desc { font-size:0.9rem; color:var(--text-muted); line-height:1.7; }
.footer-col h4 {
  font-size:0.85rem; color:var(--gold); margin-bottom:24px;
  text-transform:uppercase; letter-spacing:0.1em; font-weight:800;
}
.footer-col a {
  display:block; margin-bottom:14px; font-size:0.9rem; color:var(--text-muted);
  transition:var(--transition);
}
.footer-col a:hover { color:var(--gold); padding-left:6px; }
.footer-bottom {
  border-top:1px solid var(--border-subtle); padding:28px 0;
  text-align:center; font-size:0.8rem; color:var(--text-muted);
}

/* =========================================================
   ANIMATIONS
   ========================================================= */
.reveal {
  opacity:0; transform:translateY(40px);
  transition:opacity 0.8s cubic-bezier(0.16,1,0.3,1), transform 0.8s cubic-bezier(0.16,1,0.3,1);
}
.reveal.visible { opacity:1; transform:translateY(0); }

/* Stagger children */
.stagger-children > * { opacity:0; transform:translateY(30px); transition:var(--transition); }
.stagger-children.visible > *:nth-child(1) { transition-delay:0s; opacity:1; transform:translateY(0); }
.stagger-children.visible > *:nth-child(2) { transition-delay:0.1s; opacity:1; transform:translateY(0); }
.stagger-children.visible > *:nth-child(3) { transition-delay:0.2s; opacity:1; transform:translateY(0); }
.stagger-children.visible > *:nth-child(4) { transition-delay:0.3s; opacity:1; transform:translateY(0); }
.stagger-children.visible > *:nth-child(5) { transition-delay:0.4s; opacity:1; transform:translateY(0); }
.stagger-children.visible > *:nth-child(6) { transition-delay:0.5s; opacity:1; transform:translateY(0); }

/* =========================================================
   MOBILE
   ========================================================= */
@media (max-width: 900px) {
  .nav-links { display:none; position:absolute; top:80px; left:0; right:0;
    background:var(--navy-900); flex-direction:column; padding:24px;
    border-bottom:1px solid var(--border-subtle);
  }
  .nav-links.open { display:flex; }
  .menu-toggle { display:block; }
  .split-layout { grid-template-columns:1fr; gap:48px; }
  .form-row { grid-template-columns:1fr; }
  .footer-grid { grid-template-columns:1fr 1fr; }
  .stat-item:not(:last-child)::after { display:none; }
  .statbar-grid { gap:24px; }
}
@media (max-width: 640px) {
  .footer-grid { grid-template-columns:1fr; }
  .hero-cta { flex-direction:column; }
  .hero-cta .btn { width:100%; }
}