/* ===== ROOT VARIABLES ===== */
:root {
  --primary: #0f172a;
  --primary-light: #1e293b;
  --surface: #1a2332;
  --surface-light: #243042;
  --gold: #D4AF37;
  --gold-light: #e8c94a;
  --accent: #3b82f6;
  --accent-light: #60a5fa;
  --text: #e2e8f0;
  --text-muted: #94a3b8;
  --text-dark: #64748b;
  --white: #ffffff;
  --border: rgba(255,255,255,0.08);
  --glass: rgba(15,23,42,0.75);
  --glass-border: rgba(212,175,55,0.15);
  --shadow: 0 8px 32px rgba(0,0,0,0.3);
  --radius: 16px;
  --radius-sm: 10px;
  --transition: 0.3s cubic-bezier(0.4,0,0.2,1);
  --font-main: 'Outfit', 'Inter', sans-serif;
  --font-en: 'Inter', sans-serif;
}

body.light-mode {
  --primary: #f8fafc;
  --primary-light: #f1f5f9;
  --surface: #ffffff;
  --surface-light: #f1f5f9;
  --text: #1e293b;
  --text-muted: #64748b;
  --text-dark: #94a3b8;
  --border: rgba(0,0,0,0.08);
  --glass: rgba(255,255,255,0.85);
  --glass-border: rgba(212,175,55,0.2);
  --shadow: 0 8px 32px rgba(0,0,0,0.08);
}

/* ===== RESET ===== */
*, *::before, *::after { margin:0; padding:0; box-sizing:border-box; }
html { scroll-behavior:smooth; scroll-padding-top:80px; }
body {
  font-family: var(--font-main);
  background: var(--primary);
  color: var(--text);
  line-height: 1.7;
  overflow-x: hidden;
  transition: background var(--transition), color var(--transition);
}
a { text-decoration:none; color:inherit; transition: var(--transition); }
ul { list-style:none; }
img { max-width:100%; display:block; }

/* ===== AMBIENT BG ===== */
.ambient-bg {
  position:fixed; inset:0; z-index:0; pointer-events:none;
  background: radial-gradient(ellipse 80% 60% at 50% 0%, rgba(59,130,246,0.08) 0%, transparent 60%),
              radial-gradient(ellipse 60% 50% at 80% 100%, rgba(212,175,55,0.06) 0%, transparent 50%);
}
body.light-mode .ambient-bg {
  background: radial-gradient(ellipse 80% 60% at 50% 0%, rgba(59,130,246,0.05) 0%, transparent 60%),
              radial-gradient(ellipse 60% 50% at 80% 100%, rgba(212,175,55,0.04) 0%, transparent 50%);
}
.particles { position:fixed; inset:0; z-index:0; pointer-events:none; }
.particle {
  position:absolute; width:3px; height:3px; border-radius:50%;
  background: var(--gold); opacity:0;
  animation: particleFloat 8s infinite ease-in-out;
}
@keyframes particleFloat {
  0%,100% { opacity:0; transform:translateY(0) scale(0.5); }
  50% { opacity:0.4; transform:translateY(-80px) scale(1); }
}

/* ===== CONTAINER ===== */
.container { max-width:1100px; margin:0 auto; padding:0 24px; }

/* ===== NAVBAR ===== */
.navbar {
  position:fixed; top:0; left:0; right:0; z-index:1000;
  padding:12px 0;
  background: transparent;
  transition: var(--transition);
}
.navbar.scrolled {
  background: var(--glass);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
  padding: 8px 0;
}
.nav-inner {
  max-width:1100px; margin:0 auto; padding:0 24px;
  display:flex; align-items:center; justify-content:space-between;
}
.nav-logo {
  display:flex; align-items:center; gap:10px;
  font-weight:800; font-size:1.2rem; color: var(--gold);
}
.logo-icon {
  width:36px; height:36px; border-radius:10px;
  background: linear-gradient(135deg, var(--gold), var(--gold-light));
  display:flex; align-items:center; justify-content:center;
  color: var(--primary); font-size:0.9rem;
}
.nav-links { display:flex; gap:8px; align-items:center; }
.nav-links a {
  padding:8px 16px; border-radius:8px; font-size:0.9rem; font-weight:500;
  color: var(--text-muted);
}
.nav-links a:hover, .nav-links a.active { color: var(--gold); background: rgba(212,175,55,0.08); }
.nav-actions { display:flex; align-items:center; gap:10px; }
.theme-toggle {
  width:40px; height:40px; border-radius:10px; border:1px solid var(--border);
  background: var(--surface); color: var(--gold); cursor:pointer;
  display:flex; align-items:center; justify-content:center;
  font-size:1rem; transition: var(--transition);
}
.theme-toggle:hover { background: var(--surface-light); transform:scale(1.05); }
.nav-cta {
  padding:8px 20px; border-radius:10px; font-size:0.85rem; font-weight:600;
  background: linear-gradient(135deg, var(--gold), var(--gold-light));
  color: var(--primary); display:flex; align-items:center; gap:8px;
}
.nav-cta:hover { transform:translateY(-2px); box-shadow: 0 4px 20px rgba(212,175,55,0.3); }
.hamburger { display:none; background:none; border:none; cursor:pointer; padding:8px; flex-direction:column; gap:5px; }
.hamburger span { width:24px; height:2px; background: var(--text); border-radius:2px; transition: var(--transition); }

/* ===== HERO ===== */
.hero {
  min-height:100vh; display:flex; flex-direction:column;
  align-items:center; justify-content:center;
  text-align:center; position:relative; padding:120px 24px 60px;
}
.hero-glow {
  position:absolute; border-radius:50%; filter:blur(120px); pointer-events:none; opacity:0.5;
}
.hero-glow.g1 { width:500px; height:500px; top:-100px; right:-100px; background: rgba(59,130,246,0.12); }
.hero-glow.g2 { width:400px; height:400px; bottom:-50px; left:-50px; background: rgba(212,175,55,0.1); }
.hero-content { position:relative; z-index:2; max-width:700px; }
.hero-profile-wrapper { position:relative; display:inline-block; margin-bottom:24px; }
.hero-profile {
  width:150px; height:150px; border-radius:50%; object-fit:cover;
  border:3px solid var(--gold);
  box-shadow: 0 0 40px rgba(212,175,55,0.2);
}
.hero-profile-ring {
  position:absolute; inset:-8px; border-radius:50%;
  border:2px solid transparent;
  border-top-color: var(--gold); border-bottom-color: var(--accent);
  animation: ringRotate 6s linear infinite;
}
@keyframes ringRotate { to { transform:rotate(360deg); } }
.hero-badge {
  position:absolute; bottom:8px; right:8px;
  width:32px; height:32px; border-radius:50%;
  background: linear-gradient(135deg, var(--gold), var(--gold-light));
  color: var(--primary); display:flex; align-items:center; justify-content:center;
  font-size:0.8rem; border:3px solid var(--primary);
}
.hero-tagline {
  display:flex; align-items:center; justify-content:center; gap:12px;
  font-size:0.9rem; color: var(--gold); font-weight:600;
  letter-spacing:2px; text-transform:uppercase; margin-bottom:16px;
}
.tagline-line { width:40px; height:1px; background: var(--gold); opacity:0.5; }
.hero h1 { font-size:clamp(2.2rem,5vw,3.5rem); font-weight:900; line-height:1.2; margin-bottom:16px; }
.grad {
  background: linear-gradient(135deg, var(--gold), var(--accent-light));
  -webkit-background-clip:text; -webkit-text-fill-color:transparent;
  background-clip:text;
}
.hero-sub { font-size:1.05rem; color: var(--text-muted); max-width:550px; margin:0 auto 32px; line-height:1.8; }
.hero-stats {
  display:flex; align-items:center; justify-content:center; gap:24px;
  margin-bottom:36px;
}
.hero-stat { text-align:center; }
.hero-stat-number { font-size:2rem; font-weight:800; color: var(--gold); font-family: var(--font-en); }
.hero-stat-label { font-size:0.8rem; color: var(--text-muted); margin-top:4px; }
.hero-stat-divider { width:1px; height:40px; background: var(--border); }
.hero-ctas { display:flex; gap:14px; justify-content:center; flex-wrap:wrap; }

/* ===== BUTTONS ===== */
.btn-primary {
  padding:14px 32px; border-radius:12px; font-weight:700; font-size:0.95rem;
  background: linear-gradient(135deg, var(--gold), var(--gold-light));
  color: var(--primary); display:inline-flex; align-items:center; gap:10px;
  font-family: var(--font-main); border:none; cursor:pointer;
  box-shadow: 0 4px 20px rgba(212,175,55,0.25);
}
.btn-primary:hover { transform:translateY(-3px); box-shadow: 0 8px 30px rgba(212,175,55,0.35); }
.btn-secondary {
  padding:14px 32px; border-radius:12px; font-weight:700; font-size:0.95rem;
  background: transparent; color: var(--text);
  border:1px solid var(--border); display:inline-flex; align-items:center; gap:10px;
  font-family: var(--font-main); cursor:pointer;
}
.btn-secondary:hover { border-color: var(--gold); color: var(--gold); transform:translateY(-3px); }
.btn-large { padding:16px 40px; font-size:1rem; }
.scroll-down {
  position:absolute; bottom:30px; left:50%; transform:translateX(-50%);
  display:flex; flex-direction:column; align-items:center; gap:8px;
  color: var(--text-muted); font-size:0.8rem;
  animation: scrollBounce 2s infinite;
}
@keyframes scrollBounce { 0%,100% { transform:translateX(-50%) translateY(0); } 50% { transform:translateX(-50%) translateY(8px); } }

/* ===== SECTIONS ===== */
.section { padding:100px 0; position:relative; z-index:1; }
.section-header { text-align:center; margin-bottom:60px; }
.section-subtitle {
  font-size:0.85rem; color: var(--gold); font-weight:600;
  letter-spacing:1px; margin-bottom:12px;
  display:flex; align-items:center; justify-content:center; gap:8px;
}
.section-title { font-size:clamp(1.8rem,4vw,2.5rem); font-weight:800; margin-bottom:16px; }
.section-line { width:60px; height:3px; background: linear-gradient(90deg, var(--gold), var(--accent)); margin:0 auto; border-radius:3px; }
.section-desc { color: var(--text-muted); max-width:500px; margin:16px auto 0; font-size:0.95rem; }

/* ===== ABOUT ===== */
.about-grid { display:grid; grid-template-columns:repeat(3,1fr); gap:24px; margin-bottom:40px; }
.about-card {
  background: var(--surface); border:1px solid var(--border); border-radius: var(--radius);
  padding:32px 24px; text-align:center; transition: var(--transition);
}
.about-card:hover { transform:translateY(-6px); border-color: var(--gold); box-shadow: var(--shadow); }
.about-card-icon {
  width:56px; height:56px; border-radius:14px; margin:0 auto 16px;
  background: linear-gradient(135deg, rgba(212,175,55,0.15), rgba(59,130,246,0.1));
  display:flex; align-items:center; justify-content:center;
  font-size:1.3rem; color: var(--gold);
}
.about-card h3 { font-size:1.1rem; font-weight:700; margin-bottom:10px; color: var(--text); }
.about-card p { font-size:0.9rem; color: var(--text-muted); line-height:1.7; }
.about-info-grid {
  display:grid; grid-template-columns:repeat(2,1fr); gap:16px;
  background: var(--surface); border:1px solid var(--border); border-radius: var(--radius);
  padding:32px;
}
.info-item { display:flex; align-items:center; gap:14px; padding:8px 0; }
.info-item i { color: var(--gold); font-size:1.1rem; width:20px; text-align:center; }
.info-item div { display:flex; flex-direction:column; }
.info-label { font-size:0.75rem; color: var(--text-dark); font-weight:500; }
.info-value { font-size:0.9rem; color: var(--text); font-weight:600; }

/* ===== TIMELINE ===== */
.timeline { position:relative; padding-left:40px; }
.timeline::before {
  content:''; position:absolute; left:15px; top:0; bottom:0;
  width:2px; background: linear-gradient(180deg, var(--gold), var(--accent), var(--gold));
}
.timeline-item { position:relative; margin-bottom:40px; }
.timeline-dot {
  position:absolute; left:-40px; top:24px;
  width:32px; height:32px; border-radius:50%;
  background: linear-gradient(135deg, var(--gold), var(--gold-light));
  display:flex; align-items:center; justify-content:center;
  color: var(--primary); font-size:0.7rem; z-index:2;
  box-shadow: 0 0 20px rgba(212,175,55,0.3);
}
.timeline-card {
  background: var(--surface); border:1px solid var(--border); border-radius: var(--radius);
  padding:28px; transition: var(--transition);
}
.timeline-card:hover { border-color: var(--gold); transform:translateX(4px); box-shadow: var(--shadow); }
.timeline-header { display:flex; align-items:center; gap:16px; margin-bottom:16px; }
.company-logo {
  width:56px; height:56px; border-radius:12px; overflow:hidden;
  background: var(--surface-light); display:flex; align-items:center; justify-content:center;
  flex-shrink:0; border:1px solid var(--border);
}
.company-logo img { width:100%; height:100%; object-fit:cover; }
.construction-icon { font-size:1.5rem; color: var(--gold); }
.timeline-info h3 { font-size:1.1rem; font-weight:700; margin-bottom:4px; }
.timeline-role { font-size:0.85rem; color: var(--gold); font-weight:600; }
.timeline-meta { display:flex; gap:16px; margin-top:6px; }
.timeline-meta span { font-size:0.78rem; color: var(--text-muted); display:flex; align-items:center; gap:4px; }
.timeline-tasks { margin:12px 0 16px; padding-left:0; }
.timeline-tasks li {
  padding:6px 0; font-size:0.88rem; color: var(--text-muted);
  display:flex; align-items:center; gap:10px;
}
.timeline-tasks i { color: var(--gold); font-size:0.7rem; flex-shrink:0; }
.timeline-tags { display:flex; flex-wrap:wrap; gap:8px; }
.timeline-tags span {
  padding:4px 12px; border-radius:6px; font-size:0.75rem; font-weight:600;
  background: rgba(212,175,55,0.1); color: var(--gold); border:1px solid rgba(212,175,55,0.15);
}

/* ===== EDUCATION ===== */
.edu-grid { display:grid; grid-template-columns:repeat(4,1fr); gap:20px; }
.edu-card {
  background: var(--surface); border:1px solid var(--border); border-radius: var(--radius);
  padding:28px 20px; text-align:center; transition: var(--transition); position:relative; overflow:hidden;
}
.edu-card::before {
  content:''; position:absolute; top:0; left:0; right:0; height:3px;
  background: linear-gradient(90deg, var(--gold), var(--accent));
  transform:scaleX(0); transition: var(--transition); transform-origin:right;
}
.edu-card:hover::before { transform:scaleX(1); }
.edu-card:hover { transform:translateY(-6px); border-color: var(--gold); }
.edu-year { font-size:0.78rem; color: var(--gold); font-weight:700; margin-bottom:12px; font-family: var(--font-en); }
.edu-icon { font-size:1.8rem; color: var(--gold); margin-bottom:14px; opacity:0.8; }
.edu-card h4 { font-size:0.95rem; font-weight:700; margin-bottom:8px; }
.edu-card p { font-size:0.82rem; color: var(--text-muted); }

/* ===== SKILLS ===== */
.skills-grid { display:grid; grid-template-columns:repeat(2,1fr); gap:40px; }
.skills-category {
  font-size:1.1rem; font-weight:700; margin-bottom:24px;
  display:flex; align-items:center; gap:10px; color: var(--gold);
}
.skill-bar-item { margin-bottom:18px; }
.skill-bar-header { display:flex; justify-content:space-between; margin-bottom:8px; }
.skill-name { font-size:0.88rem; font-weight:600; }
.skill-pct { font-size:0.82rem; color: var(--gold); font-weight:700; font-family: var(--font-en); }
.skill-bar {
  height:8px; background: var(--surface-light); border-radius:8px; overflow:hidden;
  border:1px solid var(--border);
}
.skill-bar-fill {
  height:100%; width:0; border-radius:8px;
  background: linear-gradient(90deg, var(--gold), var(--accent));
  transition: width 1.5s cubic-bezier(0.4,0,0.2,1);
}
.skill-bar-fill.soft {
  background: linear-gradient(90deg, var(--accent), var(--gold));
}

/* ===== LANGUAGES ===== */
.lang-grid { display:grid; grid-template-columns:repeat(3,1fr); gap:24px; }
.lang-card {
  background: var(--surface); border:1px solid var(--border); border-radius: var(--radius);
  padding:32px 24px; text-align:center; transition: var(--transition);
}
.lang-card:hover { transform:translateY(-6px); border-color: var(--gold); }
.lang-flag { font-size:2.5rem; margin-bottom:12px; }
.lang-card h4 { font-size:1.05rem; font-weight:700; margin-bottom:4px; }
.lang-card > p { font-size:0.82rem; color: var(--text-muted); margin-bottom:16px; }
.lang-bar { height:6px; background: var(--surface-light); border-radius:6px; overflow:hidden; margin-bottom:10px; }
.lang-bar-fill {
  height:100%; width:0; border-radius:6px;
  background: linear-gradient(90deg, var(--gold), var(--accent-light));
  transition: width 1.5s cubic-bezier(0.4,0,0.2,1);
}
.lang-level { font-size:0.75rem; color: var(--gold); font-weight:600; }

/* ===== CONTACT ===== */
.contact-grid { display:grid; grid-template-columns:repeat(4,1fr); gap:20px; margin-bottom:40px; }
.contact-card {
  background: var(--surface); border:1px solid var(--border); border-radius: var(--radius);
  padding:28px 20px; text-align:center; transition: var(--transition);
}
.contact-card:hover { transform:translateY(-6px); border-color: var(--gold); }
.contact-icon {
  width:52px; height:52px; border-radius:14px; margin:0 auto 14px;
  background: linear-gradient(135deg, rgba(212,175,55,0.12), rgba(59,130,246,0.08));
  display:flex; align-items:center; justify-content:center;
  font-size:1.2rem; color: var(--gold);
}
.contact-card h4 { font-size:0.95rem; font-weight:700; margin-bottom:6px; }
.contact-card p { font-size:0.82rem; color: var(--text-muted); margin-bottom:12px; }
.contact-card a:not(.btn-primary):not(.btn-secondary) { font-size:0.82rem; color: var(--gold); font-weight:600; display:inline-flex; align-items:center; gap:6px; }
.contact-card a:hover { gap:10px; }
.contact-cta { text-align:center; display:flex; gap:16px; justify-content:center; flex-wrap:wrap; }

/* ===== FOOTER ===== */
footer {
  padding:40px 0 24px; border-top:1px solid var(--border);
  background: var(--surface);
}
.footer-inner { text-align:center; }
.footer-logo { font-size:1.3rem; font-weight:800; color: var(--gold); display:block; margin-bottom:6px; }
.footer-brand p { font-size:0.82rem; color: var(--text-muted); margin-bottom:16px; }
.footer-socials { display:flex; justify-content:center; gap:12px; margin-bottom:16px; }
.footer-socials a {
  width:40px; height:40px; border-radius:10px; border:1px solid var(--border);
  display:flex; align-items:center; justify-content:center;
  color: var(--text-muted); font-size:0.95rem; transition: var(--transition);
}
.footer-socials a:hover { color: var(--gold); border-color: var(--gold); transform:translateY(-3px); }
.footer-copy { font-size:0.78rem; color: var(--text-dark); margin-bottom:6px; }
.footer-credit { font-size:0.75rem; color: var(--text-dark); }

/* ===== SCROLL TOP ===== */
.scroll-top {
  position:fixed; bottom:24px; left:24px; z-index:999;
  width:44px; height:44px; border-radius:12px; border:none;
  background: linear-gradient(135deg, var(--gold), var(--gold-light));
  color: var(--primary); font-size:1rem; cursor:pointer;
  display:flex; align-items:center; justify-content:center;
  opacity:0; transform:translateY(20px); pointer-events:none;
  transition: var(--transition); box-shadow: 0 4px 20px rgba(212,175,55,0.3);
}
.scroll-top.visible { opacity:1; transform:translateY(0); pointer-events:auto; }
.scroll-top:hover { transform:translateY(-3px); }

/* ===== REVEAL ANIMATIONS ===== */
.reveal, .reveal-left, .reveal-right {
  opacity:0; transform:translateY(40px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}
.reveal-left { transform:translateX(40px); }
.reveal-right { transform:translateX(-40px); }
.reveal.visible, .reveal-left.visible, .reveal-right.visible {
  opacity:1; transform:translate(0);
}

/* ===== RESPONSIVE ===== */
@media (max-width:1024px) {
  .about-grid { grid-template-columns:1fr 1fr; }
  .edu-grid { grid-template-columns:1fr 1fr; }
  .contact-grid { grid-template-columns:1fr 1fr; }
  .skills-grid { grid-template-columns:1fr; gap:32px; }
}

@media (max-width:768px) {
  .nav-links, .nav-actions .nav-cta { display:none; }
  .nav-links.open {
    display:flex; flex-direction:column; position:absolute;
    top:100%; right:0; left:0; background: var(--glass);
    backdrop-filter:blur(20px); padding:16px 24px; border-bottom:1px solid var(--border);
  }
  .hamburger { display:flex; }
  .hero { padding:100px 20px 60px; }
  .hero h1 { font-size:2rem; }
  .hero-stats { gap:16px; }
  .hero-stat-number { font-size:1.5rem; }
  .about-grid { grid-template-columns:1fr; }
  .about-info-grid { grid-template-columns:1fr; }
  .edu-grid { grid-template-columns:1fr; }
  .lang-grid { grid-template-columns:1fr; }
  .contact-grid { grid-template-columns:1fr; }
  .timeline { padding-left:30px; }
  .timeline::before { left:10px; }
  .timeline-dot { left:-30px; width:28px; height:28px; }
  .section { padding:60px 0; }
}

@media (max-width:480px) {
  .hero-profile { width:120px; height:120px; }
  .hero-ctas { flex-direction:column; align-items:center; }
  .btn-primary, .btn-secondary { width:100%; justify-content:center; }
  .contact-cta { flex-direction:column; align-items:center; }
}