/* =======================================================
   PORTFOLIO.CSS — Dark Civil Engineering Blueprint Theme
   Premium dark UI with steel blue + safety orange accents
   ======================================================= */

/* ===== RESET ===== */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0;}
html{scroll-behavior:smooth;font-size:16px;-webkit-text-size-adjust:100%;}
body{
  font-family:'Inter',system-ui,-apple-system,sans-serif;
  background:var(--bg-primary);color:var(--text-primary);
  line-height:1.7;overflow-x:hidden;
}
::selection{background:var(--accent);color:#fff;}
img{display:block;max-width:100%;height:auto;}
a{text-decoration:none;color:inherit;transition:color .25s;}
ul{list-style:none;}
button{border:none;background:none;cursor:pointer;font-family:inherit;}

/* ===== DESIGN TOKENS (DARK) ===== */
:root{
  --accent:#2d9cdb;
  --accent-light:#56b3e6;
  --accent-dark:#1a7ab5;
  --accent-glow:rgba(45,156,219,.12);
  --orange:#1e8fd0;
  --orange-light:#56b3e6;
  --orange-glow:rgba(45,156,219,.08);
  --green:#3b8cd4;
  --red:#f87171;

  --bg-primary:#0a0c10;
  --bg-secondary:#0e1118;
  --bg-card:#131720;
  --bg-card-hover:#171d2a;
  --bg-glass:rgba(10,12,16,.88);
  --bg-elevated:#1a2030;

  --text-primary:#e4e8ef;
  --text-secondary:#8e99ad;
  --text-muted:#5a6478;

  --border:rgba(45,156,219,.08);
  --border-strong:rgba(45,156,219,.18);
  --border-orange:rgba(45,156,219,.12);
  --shadow-sm:0 2px 8px rgba(0,0,0,.3);
  --shadow-md:0 6px 24px rgba(0,0,0,.4);
  --shadow-lg:0 12px 48px rgba(0,0,0,.55);
  --shadow-accent:0 6px 30px rgba(45,156,219,.2);
  --shadow-orange:0 6px 30px rgba(45,156,219,.15);
  --radius:14px;
  --radius-sm:10px;
  --transition:.35s cubic-bezier(.4,0,.2,1);
}

/* ===== LIGHT THEME ===== */
[data-theme="light"]{
  --bg-primary:#f4f6fa;
  --bg-secondary:#eaeef5;
  --bg-card:#fff;
  --bg-card-hover:#f0f4fb;
  --bg-glass:rgba(244,246,250,.88);
  --bg-elevated:#fff;

  --text-primary:#1a1f2e;
  --text-secondary:#4a5568;
  --text-muted:#8896a8;

  --accent:#1876a8;
  --accent-light:#1876a8;
  --accent-dark:#13628c;
  --accent-glow:rgba(24,118,168,.08);
  --orange:#1876a8;
  --orange-light:#1876a8;
  --orange-glow:rgba(24,118,168,.07);

  --border:rgba(24,118,168,.1);
  --border-strong:rgba(24,118,168,.2);
  --border-orange:rgba(24,118,168,.1);
  --shadow-sm:0 2px 8px rgba(0,0,0,.06);
  --shadow-md:0 6px 24px rgba(0,0,0,.08);
  --shadow-lg:0 12px 48px rgba(0,0,0,.1);
  --shadow-accent:0 6px 30px rgba(24,118,168,.12);
  --shadow-orange:0 6px 30px rgba(24,118,168,.1);
}
[data-theme="light"] .nav-link:hover{color:var(--accent);}
[data-theme="light"] .nav-toggle span{background:var(--text-primary);}
[data-theme="light"] .hero-name{color:var(--text-primary);}
[data-theme="light"] .gallery-item h4{color:var(--text-primary);}
[data-theme="light"] .footer-logo{color:var(--text-primary);}
[data-theme="light"] .footer-left p{color:var(--text-muted);}
[data-theme="light"] .footer-social a{background:var(--bg-secondary);color:var(--text-secondary);border-color:var(--border);}
[data-theme="light"] .footer-bottom p{color:var(--text-muted);}
[data-theme="light"] .footer-bottom{border-top:1px solid var(--border);}
[data-theme="light"] .yt-play{background:rgba(0,0,0,.7);}
[data-theme="light"] .section-alt{background:var(--bg-secondary);}
[data-theme="light"] .lb-close,
[data-theme="light"] .lb-arrow{color:var(--text-primary);}
[data-theme="light"] .timeline-dot{background:var(--accent);box-shadow:0 0 0 4px var(--bg-primary);}
[data-theme="light"] .navbar.scrolled{box-shadow:0 1px 20px rgba(0,0,0,.08);}
[data-theme="light"] .tab-btn.active{color:#fff;}
[data-theme="light"] .btn-primary{color:#fff;}
[data-theme="light"] .btn-outline{color:var(--accent);border-color:var(--accent);}
[data-theme="light"] .btn-outline:hover{color:#fff;}
[data-theme="light"] .project-badge{color:#fff;}

/* Light theme — Hero */
[data-theme="light"] .hero{
  background:
    radial-gradient(ellipse at 20% 50%,rgba(24,118,168,.06) 0%,transparent 60%),
    radial-gradient(ellipse at 80% 30%,rgba(24,118,168,.04) 0%,transparent 50%),
    linear-gradient(160deg,#f4f6fa 0%,#eaeef5 40%,#f0f3f9 100%);
}
[data-theme="light"] .hero-img-wrapper img{
  border-color:#fff;
  box-shadow:0 0 0 6px rgba(24,118,168,.08),0 8px 48px rgba(0,0,0,.1),0 0 80px rgba(24,118,168,.05);
}

[data-theme="light"] .hero-social a{background:var(--bg-card);border-color:var(--border);}
[data-theme="light"] .scroll-mouse{border-color:var(--text-muted);}

/* Light theme — About */
[data-theme="light"] .about-quote{
  background:rgba(24,118,168,.05);
  border-left-color:var(--accent);
  color:#1a6d9e;
}
[data-theme="light"] .about-details{
  background:#fff;
  border-color:var(--border);
  background-image:
    linear-gradient(rgba(24,118,168,.03) 1px,transparent 1px),
    linear-gradient(90deg,rgba(24,118,168,.03) 1px,transparent 1px);
  box-shadow:var(--shadow-sm);
}
[data-theme="light"] .mini-stat{box-shadow:var(--shadow-sm);}
[data-theme="light"] .schedule-table thead th{background:rgba(24,118,168,.06);}
[data-theme="light"] .schedule-table .category-row td{background:rgba(24,118,168,.04);}
[data-theme="light"] .schedule-table tbody tr:hover{background:rgba(24,118,168,.04);}

/* ===== THEME TOGGLE ===== */
.theme-toggle{
  width:42px;height:42px;border-radius:var(--radius-sm);
  display:flex;align-items:center;justify-content:center;
  color:var(--text-secondary);font-size:1.1rem;
  background:var(--accent-glow);border:1px solid var(--border);
  transition:all var(--transition);cursor:pointer;margin-left:8px;
}
.theme-toggle:hover{color:var(--accent-light);background:var(--accent-glow);border-color:var(--accent);}
.theme-toggle .fa-sun{display:none;}
[data-theme="light"] .theme-toggle .fa-sun{display:inline;}
[data-theme="light"] .theme-toggle .fa-moon{display:none;}

/* ===== CONTAINER ===== */
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}

/* ===== CURSOR GLOW ===== */
.cursor-glow{
  position:fixed;width:400px;height:400px;border-radius:50%;
  background:radial-gradient(circle,rgba(45,156,219,.06) 0%,rgba(30,120,180,.03) 40%,transparent 70%);
  pointer-events:none;z-index:9999;
  transform:translate(-50%,-50%);
  transition:transform .05s linear;display:none;
}
@media(hover:hover){.cursor-glow{display:block;}}

/* ===== NAVBAR ===== */
.navbar{
  position:fixed;top:0;left:0;width:100%;z-index:1000;
  padding:16px 0;
  transition:background var(--transition),padding var(--transition),box-shadow var(--transition);
}
.navbar.scrolled{
  background:var(--bg-glass);
  backdrop-filter:blur(24px);-webkit-backdrop-filter:blur(24px);
  padding:10px 0;
  box-shadow:0 1px 30px rgba(0,0,0,.4);
  border-bottom:1px solid var(--border);
}
.nav-container{display:flex;align-items:center;justify-content:space-between;}
.nav-logo{
  font-family:'Space Grotesk',sans-serif;font-size:1.7rem;font-weight:800;
  color:var(--accent-light);letter-spacing:-1px;
}
.nav-links{display:flex;gap:4px;}
.nav-link{
  padding:8px 16px;border-radius:8px;font-size:.875rem;font-weight:600;
  color:var(--text-secondary);transition:all var(--transition);
}
.nav-link:hover{color:#fff;background:var(--accent-glow);}
.nav-link.active{color:var(--accent-light);background:var(--accent-glow);}
.nav-toggle{display:none;flex-direction:column;gap:5px;padding:6px;}
.nav-toggle span{width:24px;height:2px;background:#fff;border-radius:2px;transition:var(--transition);}
.nav-toggle.open span:nth-child(1){transform:rotate(45deg) translate(5px,5px);}
.nav-toggle.open span:nth-child(2){opacity:0;}
.nav-toggle.open span:nth-child(3){transform:rotate(-45deg) translate(5px,-5px);}

/* ===== UTILITIES ===== */
.accent{color:var(--accent-light);}
.text-center{text-align:center;}
.mt-2{margin-top:1.5rem;}
.mt-3{margin-top:2.5rem;}
.btn{
  display:inline-flex;align-items:center;gap:8px;
  padding:13px 30px;border-radius:var(--radius-sm);font-size:.9rem;font-weight:700;
  transition:all var(--transition);letter-spacing:.2px;
}
.btn-primary{
  background:linear-gradient(135deg,var(--accent) 0%,var(--accent-light) 100%);
  color:#fff;box-shadow:var(--shadow-accent);
}
.btn-primary:hover{box-shadow:0 8px 36px rgba(45,156,219,.35);transform:translateY(-3px);}
.btn-outline{border:2px solid var(--accent);color:var(--accent-light);}
.btn-outline:hover{background:var(--accent-glow);transform:translateY(-3px);}
.btn-lg{padding:16px 38px;font-size:1rem;border-radius:var(--radius);}
.btn-orange{
  background:linear-gradient(135deg,var(--orange) 0%,var(--orange-light) 100%);
  color:#fff;box-shadow:var(--shadow-orange);
}
.btn-orange:hover{transform:translateY(-3px);box-shadow:0 8px 36px rgba(45,156,219,.35);}

/* ===== SECTIONS ===== */
.section{padding:100px 0;position:relative;overflow:hidden;}
.section-alt{background:var(--bg-secondary);}
.section-title{
  font-family:'Space Grotesk',sans-serif;
  font-size:clamp(1.8rem,4vw,2.6rem);font-weight:800;
  text-align:center;margin-bottom:.5rem;color:var(--text-primary);
}
.section-title i{margin-right:8px;color:var(--accent);font-size:.85em;}
.section-title::after{
  content:'';display:block;width:60px;height:4px;
  background:linear-gradient(90deg,var(--accent),var(--accent-light));
  margin:14px auto 0;border-radius:4px;
}
.section-subtitle{
  text-align:center;color:var(--text-secondary);
  max-width:600px;margin:8px auto 48px;font-size:.95rem;
}

/* Blueprint grid overlay */
.section::before{
  content:'';position:absolute;inset:0;pointer-events:none;z-index:0;
  background-image:
    linear-gradient(rgba(45,156,219,.025) 1px,transparent 1px),
    linear-gradient(90deg,rgba(45,156,219,.025) 1px,transparent 1px);
  background-size:50px 50px;
}
.section>.container{position:relative;z-index:1;}

/* ===== HERO ===== */
.hero{
  position:relative;min-height:100vh;display:flex;align-items:center;
  padding:120px 0 60px;
  background:
    radial-gradient(ellipse at 20% 50%,rgba(45,156,219,.06) 0%,transparent 60%),
    radial-gradient(ellipse at 80% 30%,rgba(30,120,180,.04) 0%,transparent 50%),
    linear-gradient(160deg,#0c0f14 0%,#111620 40%,#0e1219 100%);
  overflow:hidden;
}
.hero-particles{position:absolute;inset:0;pointer-events:none;z-index:0;}
.hero-particles canvas{position:absolute;inset:0;width:100%!important;height:100%!important;}
.hero .container{position:relative;z-index:2;}

.hero-grid{display:grid;grid-template-columns:1fr 1fr;gap:60px;align-items:center;}
.hero-greeting{
  display:inline-flex;align-items:center;gap:8px;
  font-size:.82rem;font-weight:700;color:var(--accent-light);
  padding:8px 20px;background:var(--accent-glow);border-radius:24px;
  margin-bottom:16px;letter-spacing:1.5px;text-transform:uppercase;
  border:1.5px solid var(--border-strong);
}
.hero-greeting i{color:var(--accent-light);font-size:.95rem;}
.hero-name{
  font-family:'Space Grotesk',sans-serif;
  font-size:clamp(2.8rem,6vw,4.5rem);font-weight:900;line-height:1.05;
  color:#fff;margin-bottom:16px;letter-spacing:-2px;
}
.hero-role{font-size:1.2rem;color:var(--text-secondary);margin-bottom:8px;}
.hero-role-typed{color:var(--orange-light);font-weight:700;}
.typed-cursor{color:var(--accent);animation:blink .7s step-end infinite;font-weight:300;}
@keyframes blink{50%{opacity:0;}}
.hero-subtitle{
  font-size:.95rem;color:var(--text-muted);margin-bottom:32px;
  display:flex;align-items:center;gap:8px;
}
.hero-subtitle i{color:var(--orange);flex-shrink:0;}
.hero-cta{display:flex;gap:16px;margin-bottom:32px;flex-wrap:wrap;}
.hero-social{display:flex;gap:12px;}
.hero-social a{
  width:42px;height:42px;border-radius:var(--radius-sm);
  display:flex;align-items:center;justify-content:center;
  background:var(--bg-card);color:var(--text-secondary);
  font-size:1rem;transition:all var(--transition);
  border:1px solid var(--border);
}
.hero-social a:hover{
  background:var(--accent);color:#fff;transform:translateY(-4px) scale(1.05);
  box-shadow:var(--shadow-accent);border-color:var(--accent);
}

/* Hero image */
.hero-image{display:flex;justify-content:center;align-items:center;}
.hero-img-wrapper{position:relative;width:clamp(320px,26vw,440px);aspect-ratio:1;}
.hero-img-wrapper img{
  width:100%;height:100%;object-fit:cover;border-radius:50%;
  position:relative;z-index:2;
  border:4px solid var(--bg-card);
  box-shadow:
    0 0 0 6px var(--accent-glow),
    0 8px 48px rgba(0,0,0,.5),
    0 0 80px rgba(45,156,219,.08);
}


.scroll-indicator{
  position:absolute;bottom:32px;left:50%;transform:translateX(-50%);
  opacity:.4;transition:opacity var(--transition);z-index:2;
}
.scroll-indicator:hover{opacity:1;}
.scroll-mouse{
  width:26px;height:40px;border:2px solid var(--accent);border-radius:14px;
  display:flex;justify-content:center;padding-top:9px;
}
.scroll-wheel{
  width:3px;height:8px;background:var(--accent-light);border-radius:3px;
  animation:scrollAnim 1.8s ease-in-out infinite;
}
@keyframes scrollAnim{0%{transform:translateY(0);opacity:1;}100%{transform:translateY(13px);opacity:0;}}

/* ===== ABOUT (SINGLE COLUMN — no second image) ===== */
.about-stats-row-top{
  display:grid;grid-template-columns:repeat(4,1fr);gap:16px;
  margin-bottom:48px;
}
.about-stats-row-top .mini-stat{
  background:var(--bg-card);border:1.5px solid var(--border);
  border-radius:var(--radius);padding:24px 16px;text-align:center;
  transition:all var(--transition);position:relative;overflow:hidden;
}
.about-stats-row-top .mini-stat::before{
  content:'';position:absolute;top:0;left:0;right:0;height:3px;
  background:linear-gradient(90deg,var(--accent),var(--accent-light));
  opacity:0;transition:opacity var(--transition);
}
.about-stats-row-top .mini-stat:hover{
  transform:translateY(-4px);box-shadow:var(--shadow-md);border-color:var(--accent);
}
.about-stats-row-top .mini-stat:hover::before{opacity:1;}
.about-stats-row-top .mini-stat i{
  font-size:1.3rem;color:var(--accent);margin-bottom:8px;display:block;
}
.about-stats-row-top .mini-stat strong{
  display:block;font-family:'JetBrains Mono',monospace;font-size:1.6rem;color:var(--accent-light);font-weight:900;letter-spacing:-1px;
}
.about-stats-row-top .mini-stat span{
  font-family:'JetBrains Mono',monospace;font-size:.65rem;color:var(--text-muted);text-transform:uppercase;letter-spacing:1.5px;font-weight:600;
}

.about-single{max-width:900px;margin:0 auto;}
.about-quote{
  font-size:1.1rem;font-style:italic;color:var(--orange-light);
  border-left:4px solid var(--orange);
  padding:18px 28px;margin-bottom:28px;
  background:var(--orange-glow);
  border-radius:0 var(--radius-sm) var(--radius-sm) 0;
  line-height:1.6;
}
.about-content p{margin-bottom:18px;color:var(--text-secondary);font-size:.95rem;line-height:1.8;}
.about-details{
  display:grid;grid-template-columns:1fr 1fr;gap:20px 40px;
  margin:32px 0;padding:28px 32px;border-radius:var(--radius);
  background:var(--bg-card);border:1.5px solid var(--border);
  /* Blueprint micro-grid */
  background-image:
    linear-gradient(rgba(45,156,219,.03) 1px,transparent 1px),
    linear-gradient(90deg,rgba(45,156,219,.03) 1px,transparent 1px);
  background-size:20px 20px;
  background-color:var(--bg-card);
}
.detail-item{display:flex;flex-direction:column;gap:4px;}
.detail-label{font-family:'JetBrains Mono',monospace;font-size:.68rem;text-transform:uppercase;color:var(--accent);font-weight:700;letter-spacing:1.5px;}
.detail-item span:last-child{font-size:.9rem;color:var(--text-secondary);font-weight:500;}

/* Skills — Schedule of Materials Table */
.skills-heading{font-size:1.1rem;font-weight:700;color:var(--text-primary);margin:28px 0 18px;}
.schedule-wrapper{overflow-x:auto;margin:0 -4px;}
.schedule-title{
  text-align:left;font-family:'JetBrains Mono',monospace;
  font-size:.75rem;letter-spacing:2px;text-transform:uppercase;
  color:var(--accent);border-bottom:2px solid var(--accent);
  padding-bottom:6px;margin-bottom:0;
}
.schedule-table{width:100%;border-collapse:collapse;font-size:.88rem;}
.schedule-table thead th{
  background:var(--accent-glow);
  color:var(--accent);font-family:'JetBrains Mono',monospace;
  font-size:.7rem;letter-spacing:1.5px;text-transform:uppercase;
  padding:12px 14px;text-align:left;
  border-bottom:2px solid rgba(45,156,219,.25);white-space:nowrap;
}
.schedule-table tbody td{
  padding:10px 14px;border-bottom:1px solid var(--border);
  color:var(--text-secondary);vertical-align:middle;
}
.schedule-table tbody tr:hover{background:var(--accent-glow);}
.schedule-table .item-no{
  font-family:'JetBrains Mono',monospace;color:var(--accent);
  font-weight:700;text-align:center;width:55px;
}
.schedule-table .spec{
  font-family:'JetBrains Mono',monospace;font-size:.78rem;color:var(--text-muted);
}
.schedule-table .category-row td{
  background:rgba(45,156,219,.04);color:var(--accent);
  font-weight:700;font-size:.75rem;letter-spacing:1px;
  text-transform:uppercase;padding:8px 14px;
  border-bottom:1px solid rgba(45,156,219,.12);
}
.prof-bar{display:block;width:120px;height:6px;}
.prof-track{
  display:block;width:120px;height:6px;
  background:rgba(45,156,219,.12);
  border-radius:3px;overflow:hidden;
}
.prof-fill{display:block;height:6px;border-radius:3px;transition:width 1s ease;}
.prof-fill.advanced{background:#2d9cdb;}
.prof-fill.intermediate{background:#56b3e6;}
.prof-fill.learning{background:#5a6478;}
.prof-label{
  font-size:.65rem;font-family:'JetBrains Mono',monospace;
  text-transform:uppercase;letter-spacing:1px;color:var(--text-muted);
}
.schedule-note{
  text-align:left;font-family:'JetBrains Mono',monospace;
  font-size:.65rem;color:var(--text-muted);margin-top:10px;
  border-top:1px solid var(--border);padding-top:8px;
}

/* ===== RESUME ===== */
.resume-tabs{display:flex;gap:10px;justify-content:center;margin-bottom:48px;flex-wrap:wrap;}
.tab-btn{
  padding:11px 30px;border-radius:var(--radius-sm);font-size:.9rem;font-weight:700;
  color:var(--text-secondary);transition:all var(--transition);
  border:2px solid var(--border);background:var(--bg-card);
}
.tab-btn:hover{color:#fff;border-color:var(--accent);}
.tab-btn.active{
  background:linear-gradient(135deg,var(--accent),var(--accent-light));
  color:#fff;border-color:var(--accent);box-shadow:var(--shadow-accent);
}
.tab-content{display:none;}
.tab-content.active{display:block;}

/* Timeline */
.timeline{position:relative;max-width:720px;margin:0 auto;padding-left:36px;}
.timeline::before{
  content:'';position:absolute;left:7px;top:0;bottom:0;width:3px;
  background:linear-gradient(to bottom,var(--accent),var(--accent-dark),transparent);
  border-radius:3px;
}
.timeline-item{position:relative;margin-bottom:32px;}
.timeline-dot{
  position:absolute;left:-33px;top:8px;width:16px;height:16px;
  border-radius:50%;
  background:linear-gradient(135deg,var(--accent),var(--accent-light));
  border:4px solid var(--bg-secondary);z-index:2;
  box-shadow:0 0 0 4px var(--accent-glow),0 0 12px rgba(45,156,219,.15);
}
.timeline-card{
  background:var(--bg-card);border:1.5px solid var(--border);
  border-radius:var(--radius);padding:26px 26px 26px 76px;
  transition:all var(--transition);
  border-left:4px solid transparent;
  position:relative;
}
.timeline-logo{
  position:absolute;top:50%;left:18px;transform:translateY(-50%);
  width:40px;height:40px;object-fit:cover;
  border-radius:50%;background:var(--bg-primary);
  border:1.5px solid var(--border);padding:0;
  opacity:.85;transition:opacity var(--transition);
}
.timeline-card:hover .timeline-logo{opacity:1;}
.timeline-card:hover{
  border-left-color:var(--accent);
  box-shadow:var(--shadow-md);transform:translateX(6px);
  background:var(--bg-card-hover);
}
.timeline-date{font-family:'JetBrains Mono',monospace;font-size:.72rem;color:var(--accent-light);font-weight:700;text-transform:uppercase;letter-spacing:1px;background:var(--accent-glow);padding:2px 8px;border-radius:4px;display:inline-block;}
.timeline-card h3{font-size:1.05rem;color:var(--text-primary);margin:6px 0 2px;font-weight:700;}
.timeline-org{font-family:'JetBrains Mono',monospace;font-size:.8rem;color:var(--accent-light);font-weight:600;letter-spacing:.5px;}
.timeline-card ul{margin-top:10px;padding-left:18px;}
.timeline-card li{font-size:.85rem;color:var(--text-secondary);margin-bottom:4px;list-style:disc;}
.timeline-card li::marker{color:var(--accent);}
.timeline-card p{font-size:.88rem;color:var(--text-secondary);margin-top:6px;}

/* ===== PROJECTS ===== */
.projects-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(320px,1fr));gap:28px;}
.project-card{
  background:var(--bg-card);border:1.5px solid var(--border);
  border-radius:var(--radius);overflow:hidden;
  transition:all var(--transition);
}
.project-card:hover{
  transform:translateY(-8px);box-shadow:var(--shadow-lg);
  border-color:var(--accent);
}
/* Featured project (Seismic) */
.featured-project{
  grid-column:1 / -1;
  display:grid;grid-template-columns:1fr 1fr;
  border-color:var(--border-strong);
  background:linear-gradient(135deg,var(--bg-card) 0%,rgba(45,156,219,.04) 100%);
}
.featured-project .project-img{aspect-ratio:auto;min-height:250px;}
.featured-project .project-info{display:flex;flex-direction:column;justify-content:center;padding:32px;}
.featured-project .project-info h3{font-size:1.25rem;}
.featured-project .project-badge{
  background:linear-gradient(135deg,var(--accent),var(--accent-light));
  color:#fff;font-size:.75rem;
}

.project-img{position:relative;overflow:hidden;aspect-ratio:16/10;}
.project-img img{width:100%;height:100%;object-fit:cover;transition:transform .5s;}
.project-card:hover .project-img img{transform:scale(1.06);}
.project-overlay{
  position:absolute;inset:0;
  background:linear-gradient(135deg,rgba(45,156,219,.65),rgba(26,90,140,.55));
  display:flex;align-items:center;justify-content:center;
  opacity:0;transition:opacity var(--transition);
}
.project-card:hover .project-overlay{opacity:1;}
.project-link{
  width:54px;height:54px;border-radius:50%;
  background:#fff;color:var(--accent-dark);font-size:1.3rem;
  display:flex;align-items:center;justify-content:center;
  transition:transform var(--transition);box-shadow:var(--shadow-md);
}
.project-link:hover{transform:scale(1.15);}
.project-badge{
  position:absolute;top:12px;right:12px;
  padding:5px 14px;border-radius:24px;font-family:'JetBrains Mono',monospace;font-size:.68rem;font-weight:700;
  background:var(--orange);color:#fff;text-transform:uppercase;letter-spacing:1px;
}
.project-info{padding:24px;}
.project-info h3{font-size:1.08rem;font-weight:700;color:var(--text-primary);margin-bottom:8px;}
.project-info p{font-size:.85rem;color:var(--text-secondary);margin-bottom:16px;line-height:1.6;}
.project-tags{display:flex;flex-wrap:wrap;gap:6px;}
.project-tags span{
  padding:5px 14px;font-family:'JetBrains Mono',monospace;font-size:.68rem;border-radius:24px;font-weight:600;
  background:var(--accent-glow);color:var(--accent-light);border:1px solid var(--border-strong);letter-spacing:.5px;
}

/* ===== FEATURED APP SHOWCASE ===== */
.app-showcase{
  position:relative;
  background:var(--bg-card);
  border:2px solid var(--border-strong);
  border-radius:var(--radius);
  padding:48px;
  /* Blueprint grid */
  background-image:
    linear-gradient(rgba(45,156,219,.03) 1px,transparent 1px),
    linear-gradient(90deg,rgba(45,156,219,.03) 1px,transparent 1px);
  background-size:24px 24px;
  background-color:var(--bg-card);
}
.app-blueprint-corner{
  position:absolute;width:24px;height:24px;
  border-color:var(--accent);border-style:solid;
  opacity:.35;
}
.app-corner-tl{top:-2px;left:-2px;border-width:3px 0 0 3px;border-radius:4px 0 0 0;}
.app-corner-tr{top:-2px;right:-2px;border-width:3px 3px 0 0;border-radius:0 4px 0 0;}
.app-corner-bl{bottom:-2px;left:-2px;border-width:0 0 3px 3px;border-radius:0 0 0 4px;}
.app-corner-br{bottom:-2px;right:-2px;border-width:0 3px 3px 0;border-radius:0 0 4px 0;}
.app-showcase-inner{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center;}
.app-badge{
  display:inline-flex;align-items:center;gap:6px;
  font-size:.72rem;font-weight:700;text-transform:uppercase;letter-spacing:1.5px;
  color:var(--accent-light);background:var(--accent-glow);
  padding:6px 16px;border-radius:24px;border:1px solid var(--border-strong);
  margin-bottom:16px;
}
.app-badge i{color:var(--orange);}
.app-info h3{
  font-family:'Space Grotesk',sans-serif;
  font-size:1.6rem;font-weight:800;color:var(--text-primary);
  margin-bottom:14px;line-height:1.3;
}
.app-info p{font-size:.92rem;color:var(--text-secondary);line-height:1.7;margin-bottom:20px;}
.app-info p strong{color:var(--accent-light);font-weight:700;}
.app-features{margin-bottom:28px;padding:0;}
.app-features li{
  display:flex;align-items:center;gap:10px;
  font-size:.85rem;color:var(--text-secondary);
  margin-bottom:10px;list-style:none;
}
.app-features li i{color:var(--green);font-size:.8rem;flex-shrink:0;}
.app-cta{display:flex;gap:14px;flex-wrap:wrap;}

/* App browser preview */
.app-preview{
  border-radius:var(--radius);overflow:hidden;
  border:1.5px solid var(--border-strong);
  box-shadow:var(--shadow-lg);
  background:var(--bg-primary);
}
.app-browser-frame{
  display:flex;align-items:center;gap:12px;
  padding:10px 16px;
  background:var(--bg-elevated);
  border-bottom:1px solid var(--border);
}
.app-browser-dots{display:flex;gap:6px;}
.app-browser-dots span{
  width:10px;height:10px;border-radius:50%;
  background:var(--text-muted);opacity:.4;
}
.app-browser-dots span:first-child{background:#f87171;}
.app-browser-dots span:nth-child(2){background:#fbbf24;}
.app-browser-dots span:last-child{background:#34d399;}
.app-browser-url{
  flex:1;font-size:.72rem;color:var(--text-muted);font-family:'JetBrains Mono',monospace;
  background:var(--bg-card);padding:5px 14px;border-radius:6px;
  border:1px solid var(--border);
}
.app-screenshot{
  aspect-ratio:16/10;overflow:hidden;position:relative;
}
.app-screenshot iframe{
  width:100%;height:100%;border:none;
  transform-origin:top left;
}
[data-theme="light"] .app-showcase{background:#fff;box-shadow:var(--shadow-sm);}
[data-theme="light"] .app-preview{background:#f9fafb;border-color:var(--border);}
[data-theme="light"] .app-browser-frame{background:#f1f3f5;}

/* ===== WAVE DIVIDERS ===== */
.wave-divider{
  position:relative;width:100%;overflow:hidden;line-height:0;
  margin-top:-1px;
}
.wave-divider svg{
  display:block;width:100%;height:60px;
}
@media(min-width:768px){
  .wave-divider svg{height:80px;}
}
@media(min-width:1200px){
  .wave-divider svg{height:100px;}
}

/* ===== ENGINEERING DECORATIONS ===== */
.section-title .eng-sub{
  display:block;font-size:.55em;font-weight:400;
  color:var(--text-muted);font-family:'JetBrains Mono',monospace;
  letter-spacing:2.5px;margin-top:4px;text-transform:uppercase;
}

/* ===== YOUTUBE ===== */
.yt-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:24px;}
.yt-card{
  background:var(--bg-card);border:1.5px solid var(--border);
  border-radius:var(--radius);overflow:hidden;
  transition:all var(--transition);cursor:pointer;
}
.yt-card:hover{transform:translateY(-5px);box-shadow:var(--shadow-lg);border-color:var(--red);}
.yt-thumb{position:relative;aspect-ratio:16/9;overflow:hidden;}
.yt-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .5s;}
.yt-card:hover .yt-thumb img{transform:scale(1.05);}
.yt-play{
  position:absolute;inset:0;display:flex;align-items:center;justify-content:center;
  background:rgba(0,0,0,.25);transition:background var(--transition);
}
.yt-play i{
  font-size:1.8rem;color:#fff;
  width:58px;height:58px;border-radius:50%;
  background:#ff0000;display:flex;align-items:center;justify-content:center;
  box-shadow:0 4px 24px rgba(255,0,0,.35);transition:transform var(--transition);
}
.yt-card:hover .yt-play i{transform:scale(1.15);}
.yt-card h4{padding:16px 20px;font-size:.92rem;font-weight:600;color:var(--text-primary);}

/* YT Modal */
.yt-modal{
  position:fixed;inset:0;z-index:10000;
  background:rgba(0,0,0,.8);backdrop-filter:blur(12px);
  display:flex;align-items:center;justify-content:center;animation:fadeIn .3s;
}
.yt-modal[hidden]{display:none;}
.yt-modal-close{position:absolute;top:24px;right:32px;font-size:2.2rem;color:#fff;z-index:10;transition:transform var(--transition);}
.yt-modal-close:hover{transform:rotate(90deg);}
.yt-modal-body{width:90%;max-width:900px;aspect-ratio:16/9;}
.yt-modal-body iframe{width:100%;height:100%;border:none;border-radius:var(--radius);}

/* ===== GALLERY ===== */
.gallery-masonry{
  display:grid;grid-template-columns:repeat(3,1fr);gap:24px;
}
.gallery-item{
  position:relative;cursor:pointer;
  overflow:hidden;
  background:var(--bg-card);
  border:1px solid var(--border-color);
  border-radius:var(--radius);
  transition:transform var(--transition),box-shadow var(--transition),border-color var(--transition);
}
.gallery-item:hover{
  transform:translateY(-6px);
  box-shadow:var(--shadow-md);
  border-color:var(--accent);
}
.gallery-item img{
  width:100%;aspect-ratio:4/3;object-fit:cover;display:block;
  transition:transform .4s ease;
}
.gallery-item:hover img{
  transform:scale(1.05);
}
.gallery-item figcaption{
  padding:12px 16px;
  background:var(--bg-card);
}
.gallery-item h4{
  font-size:.88rem;color:var(--text-primary);font-weight:700;
  letter-spacing:.2px;
}

/* Lightbox */
.lightbox{
  position:fixed;inset:0;z-index:10000;
  background:rgba(0,0,0,.92);backdrop-filter:blur(16px);
  display:flex;align-items:center;justify-content:center;animation:fadeIn .3s;
}
.lightbox[hidden]{display:none;}
.lb-close{position:absolute;top:20px;right:28px;font-size:2.2rem;color:#fff;z-index:10;transition:transform var(--transition);}
.lb-close:hover{transform:rotate(90deg);}
.lb-arrow{
  position:absolute;top:50%;transform:translateY(-50%);
  font-size:3rem;color:rgba(255,255,255,.5);padding:20px;z-index:10;transition:color var(--transition);
}
.lb-arrow:hover{color:#fff;}
.lb-prev{left:16px;}
.lb-next{right:16px;}
.lb-content{text-align:center;max-width:85vw;max-height:85vh;}
.lb-img{max-width:100%;max-height:75vh;border-radius:var(--radius);display:inline-block;box-shadow:var(--shadow-lg);}
.lb-info{margin-top:16px;}
.lb-title{font-size:1.1rem;color:#fff;font-weight:700;margin-bottom:4px;}
.lb-desc{font-size:.88rem;color:var(--text-secondary);}

/* ===== CERTIFICATES ===== */
.cert-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:24px;
  margin-top:36px;
}
.cert-card{
  background:var(--bg-card);
  border:1px solid var(--border-color);
  border-radius:var(--radius);
  overflow:hidden;
  cursor:pointer;
  transition:transform var(--transition),box-shadow var(--transition),border-color var(--transition);
}
.cert-card:hover{
  transform:translateY(-6px);
  box-shadow:var(--shadow-md);
  border-color:var(--accent);
}
.cert-img-wrap{
  position:relative;
  width:100%;
  aspect-ratio:1.414;
  overflow:hidden;
  background:var(--bg-secondary);
}
.cert-img-wrap img{
  width:100%;height:100%;
  object-fit:cover;
  transition:transform .4s ease;
}
.cert-card:hover .cert-img-wrap img{
  transform:scale(1.05);
}
.cert-overlay{
  position:absolute;inset:0;
  display:flex;align-items:center;justify-content:center;
  background:rgba(10,12,16,.6);
  opacity:0;
  transition:opacity .3s ease;
}
.cert-overlay i{
  font-size:1.8rem;
  color:var(--accent-light);
}
.cert-card:hover .cert-overlay{opacity:1;}
.cert-info{
  padding:14px 16px;
}
.cert-info h4{
  font-size:.92rem;
  color:var(--text-primary);
  font-weight:700;
  margin-bottom:6px;
  line-height:1.3;
}
.cert-org{
  font-size:.78rem;
  color:var(--text-muted);
  display:flex;align-items:center;gap:6px;
}
.cert-org i{
  color:var(--accent);
  font-size:.72rem;
}
.cert-pdf-links{
  display:flex;flex-wrap:wrap;gap:16px;
  margin-top:32px;
  justify-content:center;
}
.cert-pdf-link{
  display:inline-flex;align-items:center;gap:8px;
  padding:12px 24px;
  background:var(--bg-card);
  border:1px solid var(--border-color);
  border-radius:var(--radius);
  color:var(--accent-light);
  font-size:.88rem;font-weight:600;
  transition:all var(--transition);
  text-decoration:none;
}
.cert-pdf-link:hover{
  border-color:var(--accent);
  color:var(--text-primary);
  transform:translateY(-3px);
  box-shadow:var(--shadow-md);
}
.cert-pdf-link i{
  font-size:1.1rem;
  color:var(--accent);
}

/* ===== CONTACT ===== */
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:start;}
.contact-cards{display:grid;grid-template-columns:1fr 1fr;gap:16px;}
.contact-card{
  background:var(--bg-card);border:1.5px solid var(--border);
  border-radius:var(--radius);padding:30px 22px;text-align:center;
  transition:all var(--transition);
}
.contact-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);border-color:var(--accent);}
.contact-icon{
  width:52px;height:52px;border-radius:var(--radius-sm);margin:0 auto 14px;
  background:linear-gradient(135deg,var(--accent-glow),var(--orange-glow));
  color:var(--accent-light);display:flex;align-items:center;justify-content:center;font-size:1.2rem;
}
.contact-card h4{font-size:.9rem;color:var(--text-primary);margin-bottom:6px;font-weight:700;}
.contact-card p{font-size:.82rem;color:var(--text-secondary);}
.contact-card a{color:var(--accent-light);transition:color var(--transition);}
.contact-card a:hover{color:var(--orange-light);}
.cta-box{
  background:var(--bg-card);
  border:1.5px solid var(--border-strong);
  border-radius:var(--radius);padding:44px;text-align:center;
  background-image:
    linear-gradient(rgba(45,156,219,.02) 1px,transparent 1px),
    linear-gradient(90deg,rgba(45,156,219,.02) 1px,transparent 1px);
  background-size:24px 24px;
  background-color:var(--bg-card);
}
.cta-box h3{font-size:1.35rem;color:var(--text-primary);margin-bottom:12px;font-weight:800;}
.cta-box>p{font-size:.9rem;color:var(--text-secondary);margin-bottom:28px;}
.cta-social{margin-top:30px;padding-top:24px;border-top:1px solid var(--border);}
.cta-social span{display:block;font-size:.82rem;color:var(--text-muted);margin-bottom:14px;font-weight:600;text-transform:uppercase;letter-spacing:.5px;}
.social-row{display:flex;justify-content:center;gap:12px;}
.social-row a{
  width:44px;height:44px;border-radius:var(--radius-sm);
  display:flex;align-items:center;justify-content:center;
  background:var(--bg-elevated);color:var(--text-secondary);
  font-size:1.1rem;transition:all var(--transition);border:1px solid var(--border);
}
.social-row a:hover{
  background:var(--accent);color:#fff;border-color:var(--accent);
  transform:translateY(-4px);box-shadow:var(--shadow-accent);
}

/* ===== FOOTER ===== */
.footer{
  background:linear-gradient(160deg,#080b11 0%,#0a0e16 100%);
  border-top:3px solid;
  border-image:linear-gradient(90deg,var(--accent),var(--orange)) 1;
  padding:48px 0 0;
}
.footer-inner{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:24px;padding-bottom:24px;}
.footer-logo{font-family:'Space Grotesk',sans-serif;font-size:1.5rem;font-weight:800;color:#fff;}
.footer-left p{font-size:.82rem;color:rgba(255,255,255,.4);margin-top:8px;line-height:1.5;}
.footer-social{display:flex;gap:12px;}
.footer-social a{
  width:40px;height:40px;border-radius:var(--radius-sm);
  display:flex;align-items:center;justify-content:center;
  background:rgba(255,255,255,.05);color:rgba(255,255,255,.5);
  font-size:.95rem;transition:all var(--transition);border:1px solid rgba(255,255,255,.06);
}
.footer-social a:hover{background:var(--accent);color:#fff;border-color:var(--accent);}
.footer-bottom{text-align:center;padding:16px 0;border-top:1px solid rgba(255,255,255,.05);}
.footer-bottom p{font-size:.78rem;color:rgba(255,255,255,.3);}

/* ===== BACK TO TOP ===== */
.back-top{
  position:fixed;bottom:28px;right:28px;
  width:48px;height:48px;border-radius:var(--radius-sm);
  background:linear-gradient(135deg,var(--accent),var(--accent-light));
  color:#fff;font-size:1rem;
  display:flex;align-items:center;justify-content:center;
  box-shadow:var(--shadow-accent);
  opacity:0;visibility:hidden;transform:translateY(20px);
  transition:all var(--transition);z-index:999;
}
.back-top.show{opacity:1;visibility:visible;transform:translateY(0);}
.back-top:hover{transform:translateY(-4px);box-shadow:0 8px 36px rgba(45,156,219,.4);}

/* ===== ANIMATIONS ===== */
@keyframes fadeIn{from{opacity:0;}to{opacity:1;}}
[data-animate]{opacity:0;transform:translateY(40px);transition:opacity .7s ease,transform .7s ease;}
[data-animate="fade-right"]{transform:translateX(-50px);}
[data-animate="fade-left"]{transform:translateX(50px);}
[data-animate].visible{opacity:1;transform:translate(0);}

/* ===== RESPONSIVE ===== */
@media(max-width:992px){
  .hero-grid{grid-template-columns:1fr;text-align:center;}
  .hero-text{order:2;}
  .hero-image{order:1;}
  .hero-cta,.hero-social{justify-content:center;}
  .hero-subtitle{justify-content:center;}
  .about-stats-row-top{grid-template-columns:repeat(2,1fr);}
  .about-details{grid-template-columns:1fr;}
  .schedule-table{font-size:.82rem;}
  .schedule-table thead th{font-size:.65rem;padding:10px 10px;}
  .schedule-table tbody td{padding:8px 10px;}
  .contact-grid{grid-template-columns:1fr;}
  .gallery-masonry{grid-template-columns:repeat(2,1fr);}
  .cert-grid{grid-template-columns:repeat(2,1fr);}
  .featured-project{grid-template-columns:1fr;}
  .app-showcase-inner{grid-template-columns:1fr;}
  .app-showcase{padding:32px;}
}
@media(max-width:768px){
  .nav-links{
    position:fixed;top:0;right:-100%;width:280px;height:100vh;
    flex-direction:column;background:var(--bg-primary);
    padding:80px 32px 40px;gap:4px;
    transition:right var(--transition);
    box-shadow:-10px 0 50px rgba(0,0,0,.5);
    border-left:1px solid var(--border);z-index:1001;
  }
  .nav-links.open{right:0;}
  .nav-toggle{display:flex;z-index:1002;}
  .hero-name{font-size:clamp(2.2rem,8vw,3.2rem);}
  .hero-img-wrapper{width:clamp(220px,50vw,320px);}
  .projects-grid{grid-template-columns:1fr;}
  .app-showcase-inner{grid-template-columns:1fr;}
  .app-showcase{padding:24px;}
  .yt-grid{grid-template-columns:1fr;}
  .cert-grid{grid-template-columns:1fr;}
  .contact-cards{grid-template-columns:1fr;}
  .section{padding:70px 0;}
}
@media(max-width:480px){
  .gallery-masonry{grid-template-columns:repeat(2,1fr);}
  .about-stats-row-top{grid-template-columns:repeat(2,1fr);gap:10px;}
  .footer-inner{flex-direction:column;text-align:center;}
}