/* =====================
   CSS VARIABLES — THEMES
===================== */
:root {
    --bg: #080810;
    --bg-2: #0e0e1a;
    --surface: #13131e;
    --surface-2: #1a1a28;
    --border: rgba(255,255,255,0.07);
    --border-hover: rgba(255,255,255,0.15);
    --text: #eeeef5;
    --text-2: #9898b8;
    --text-muted: #4a4a6a;
    --accent: #14b8a6;
    --accent-2: #a78bfa;
    --accent-dark: #0d9488;
    --accent-glow: rgba(20, 184, 166, 0.2);
    --orb-1: rgba(20, 184, 166, 0.22);
    --orb-2: rgba(139, 92, 246, 0.18);
    --orb-3: rgba(244, 114, 182, 0.1);
    --card-bg: #13131e;
    --card-shadow: 0 4px 20px rgba(0,0,0,0.45);
    --nav-bg: rgba(8, 8, 16, 0.88);
    --job-bg: #13131e;
    --section-border: rgba(255,255,255,0.05);
    --footer-bg: #0d1a18;
    --hero-h1: #f0f0f8;
    --heading-color: #14b8a6;
    --about-text: #b8b8d0;
    --progress-gradient: linear-gradient(90deg, #14b8a6, #a78bfa);
    --tag-bg: rgba(20,184,166,0.12);
    --tag-color: #14b8a6;
    --cert-tile-bg: #14142280;
    --cert-tile-bg-hover: #1c1c32;
    --cert-detail-bg: #111120;
    --logo-wrap-bg: #1e1e30;
}
[data-theme="light"] {
    --bg: #f5f5fb;
    --bg-2: #eeeef8;
    --surface: #ffffff;
    --surface-2: #f2f2fa;
    --border: rgba(0,0,0,0.07);
    --border-hover: rgba(0,0,0,0.15);
    --text: #0c0c18;
    --text-2: #4a4a6a;
    --text-muted: #8888a8;
    --accent: #0d9488;
    --accent-2: #7c3aed;
    --accent-dark: #0a7a70;
    --accent-glow: rgba(13, 148, 136, 0.12);
    --orb-1: rgba(20, 184, 166, 0.12);
    --orb-2: rgba(124, 58, 237, 0.08);
    --orb-3: rgba(244, 114, 182, 0.07);
    --card-bg: #ffffff;
    --card-shadow: 0 4px 16px rgba(0,0,0,0.06);
    --nav-bg: rgba(245, 245, 251, 0.92);
    --job-bg: #ffffff;
    --section-border: rgba(0,0,0,0.05);
    --footer-bg: #0d9488;
    --hero-h1: #0c0c18;
    --heading-color: #0d9488;
    --about-text: #2a2a4a;
    --progress-gradient: linear-gradient(90deg, #14b8a6, #7c3aed);
    --tag-bg: rgba(13,148,136,0.1);
    --tag-color: #0d9488;
    --cert-tile-bg: #f0f9f8;
    --cert-tile-bg-hover: #e2f7f5;
    --cert-detail-bg: #f5fffe;
    --logo-wrap-bg: #eef9f7;
}

/* ===================== RESET & BASE ===================== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; overscroll-behavior: none; }
body { font-family: 'DM Sans', sans-serif; color: var(--text); background: var(--bg); transition: background 0.3s ease, color 0.3s ease; overflow-x: hidden; cursor: none; }
@media (hover: none) { body { cursor: auto; } .cursor-dot, .cursor-ring { display: none; } }
p { margin: 0 0 14px 0; line-height: 1.7; }
a { text-decoration: none; color: inherit; cursor: none; }
ul { list-style: none; padding: 0; margin: 0; }
em { font-style: italic; color: var(--accent); }
button { cursor: none; }
.container { max-width: 1000px; margin: 0 auto; padding: 0 24px; }

/* ===================== AURORA ===================== */
.aurora-bg { position: fixed; inset: 0; z-index: -1; overflow: hidden; pointer-events: none; }
.aurora-blob { position: absolute; border-radius: 50%; filter: blur(80px); opacity: 0.55; will-change: transform; }
.blob-1 { width:600px;height:600px;background:radial-gradient(circle,rgba(20,184,166,.6) 0%,transparent 70%);top:-150px;left:-150px;animation:auroraMove1 18s ease-in-out infinite; }
.blob-2 { width:550px;height:550px;background:radial-gradient(circle,rgba(139,92,246,.55) 0%,transparent 70%);top:-100px;right:-150px;animation:auroraMove2 22s ease-in-out infinite; }
.blob-3 { width:500px;height:500px;background:radial-gradient(circle,rgba(236,72,153,.4) 0%,transparent 70%);top:40%;left:30%;animation:auroraMove3 16s ease-in-out infinite; }
.blob-4 { width:400px;height:400px;background:radial-gradient(circle,rgba(20,184,166,.45) 0%,transparent 70%);bottom:-100px;left:-80px;animation:auroraMove4 20s ease-in-out infinite; }
.blob-5 { width:450px;height:450px;background:radial-gradient(circle,rgba(167,139,250,.5) 0%,transparent 70%);bottom:-120px;right:-100px;animation:auroraMove5 25s ease-in-out infinite; }
[data-theme="light"] .blob-1 { background:radial-gradient(circle,rgba(20,184,166,.25) 0%,transparent 70%);opacity:.7; }
[data-theme="light"] .blob-2 { background:radial-gradient(circle,rgba(124,58,237,.2) 0%,transparent 70%);opacity:.7; }
[data-theme="light"] .blob-3 { background:radial-gradient(circle,rgba(236,72,153,.15) 0%,transparent 70%);opacity:.7; }
[data-theme="light"] .blob-4 { background:radial-gradient(circle,rgba(20,184,166,.2) 0%,transparent 70%);opacity:.7; }
[data-theme="light"] .blob-5 { background:radial-gradient(circle,rgba(167,139,250,.2) 0%,transparent 70%);opacity:.7; }
@keyframes auroraMove1 { 0%,100%{transform:translate(0,0) scale(1);} 33%{transform:translate(80px,60px) scale(1.1);} 66%{transform:translate(-40px,100px) scale(0.95);} }
@keyframes auroraMove2 { 0%,100%{transform:translate(0,0) scale(1);} 33%{transform:translate(-70px,80px) scale(1.08);} 66%{transform:translate(50px,-40px) scale(1.05);} }
@keyframes auroraMove3 { 0%,100%{transform:translate(0,0) scale(1);} 25%{transform:translate(-80px,-60px) scale(1.12);} 50%{transform:translate(60px,80px) scale(0.9);} 75%{transform:translate(-30px,40px) scale(1.06);} }
@keyframes auroraMove4 { 0%,100%{transform:translate(0,0) scale(1);} 40%{transform:translate(90px,-70px) scale(1.1);} 70%{transform:translate(30px,50px) scale(0.92);} }
@keyframes auroraMove5 { 0%,100%{transform:translate(0,0) scale(1);} 30%{transform:translate(-60px,-80px) scale(1.08);} 60%{transform:translate(-90px,40px) scale(1.05);} }

/* ===================== CURSOR ===================== */
.cursor-dot { position:fixed;top:0;left:0;width:8px;height:8px;background:var(--accent);border-radius:50%;pointer-events:none;z-index:99999;transform:translate(0,0);margin-left:-4px;margin-top:-4px;transition:opacity .2s,width .2s,height .2s,background .2s;box-shadow:0 0 8px var(--accent); }
.cursor-ring { position:fixed;top:0;left:0;width:34px;height:34px;border:1.5px solid var(--accent);border-radius:50%;pointer-events:none;z-index:99998;margin-left:-17px;margin-top:-17px;transition:opacity .2s,width .3s ease,height .3s ease,border-color .3s,background .3s;opacity:.7; }
.cursor-ring.ring-hover { width:50px;height:50px;margin-left:-25px;margin-top:-25px;border-color:var(--accent-2);background:rgba(167,139,250,.06);opacity:1; }
.cursor-dot.dot-hover { width:5px;height:5px;margin-left:-2.5px;margin-top:-2.5px;background:var(--accent-2);box-shadow:0 0 12px var(--accent-2); }

/* ===================== SCROLL BAR ===================== */
.scroll-progress-bar { position:fixed;top:0;left:0;height:2px;width:0%;background:var(--progress-gradient);z-index:9999;transition:width .1s linear; }

/* ===================== NAVBAR ===================== */
#navbar { position:sticky;top:0;z-index:1000;transition:background .3s,box-shadow .3s; }
#navbar.scrolled { background:var(--nav-bg);backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);box-shadow:0 1px 0 var(--border); }
.nav-inner { display:flex;align-items:center;justify-content:space-between;padding:10px 24px;gap:12px; }
.nav-logo { display:flex;align-items:center;gap:4px;flex-shrink:0; }
.logo-text { font-family:'Space Mono',monospace;font-weight:700;font-size:16px;color:var(--accent);background:var(--tag-bg);border:1px solid var(--accent);border-radius:6px;padding:3px 8px;transition:all .3s; }
.nav-logo:hover .logo-text { background:var(--accent);color:#fff; }
.logo-dot { width:5px;height:5px;border-radius:50%;background:var(--accent-2);animation:pulseDot 2s infinite; }
@keyframes pulseDot { 0%,100%{transform:scale(1);opacity:1;} 50%{transform:scale(1.5);opacity:.5;} }
.nav-links { display:flex;align-items:center;flex-wrap:wrap;gap:0;flex:1;justify-content:center; }
.nav-links li { margin:0 6px; }
.nav-links li a { color:var(--text-2);font-weight:500;font-size:13px;padding:6px 2px;position:relative;transition:color .2s; }
.nav-links li a::after { content:'';position:absolute;bottom:0;left:0;width:0;height:1px;background:var(--accent);transition:width .3s; }
.nav-links li a:hover { color:var(--accent); }
.nav-links li a:hover::after { width:100%; }
.nav-actions { display:flex;align-items:center;gap:8px;flex-shrink:0; }
.theme-toggle { width:34px;height:34px;border-radius:50%;border:1px solid var(--border);background:var(--surface);color:var(--text-2);display:flex;align-items:center;justify-content:center;font-size:13px;transition:all .3s; }
.theme-toggle:hover { border-color:var(--accent);color:var(--accent); }
.hamburger { display:none;flex-direction:column;gap:5px;background:none;border:none;padding:6px; }
.hamburger span { display:block;width:20px;height:2px;background:var(--text-2);border-radius:2px;transition:all .3s; }
.hamburger.open span:nth-child(1) { transform:translateY(7px) rotate(45deg); }
.hamburger.open span:nth-child(2) { opacity:0; }
.hamburger.open span:nth-child(3) { transform:translateY(-7px) rotate(-45deg); }

/* ===================== HERO ===================== */
#hero { position:relative;overflow:hidden;min-height:72vh;display:flex;flex-direction:column;justify-content:center; }
.hero-bg { position:absolute;inset:0;z-index:1; }
.hero-grid { position:absolute;inset:0;background-image:linear-gradient(var(--border) 1px,transparent 1px),linear-gradient(90deg,var(--border) 1px,transparent 1px);background-size:56px 56px;mask-image:radial-gradient(ellipse 80% 80% at 50% 50%,black 30%,transparent 100%);-webkit-mask-image:radial-gradient(ellipse 80% 80% at 50% 50%,black 30%,transparent 100%); }
.hero-orb { position:absolute;border-radius:50%;filter:blur(90px); }
.orb-1 { width:450px;height:450px;background:var(--orb-1);top:-100px;left:-100px;animation:orbFloat 9s ease-in-out infinite; }
.orb-2 { width:350px;height:350px;background:var(--orb-2);bottom:-80px;right:-60px;animation:orbFloat 13s ease-in-out infinite reverse; }
.orb-3 { width:260px;height:260px;background:var(--orb-3);top:40%;left:55%;animation:orbFloat 7s ease-in-out infinite 2s; }
@keyframes orbFloat { 0%,100%{transform:translate(0,0) scale(1);} 50%{transform:translate(28px,-20px) scale(1.04);} }
.hero-background { position:relative;z-index:2;padding:52px 20px 40px; }
.hero-content { display:flex;align-items:center;gap:44px; }
.profile-pic-wrapper { position:relative;flex-shrink:0; }
.profile-pic { width:160px;height:160px;border-radius:50%;object-fit:cover;border:3px solid var(--accent);box-shadow:0 0 0 8px var(--accent-glow),0 12px 40px rgba(0,0,0,.4);display:block;transition:transform .4s; }
.profile-pic:hover { transform:scale(1.04); }
.profile-ring { position:absolute;inset:-10px;border-radius:50%;border:1px dashed var(--accent);opacity:.3;animation:ringRotate 20s linear infinite; }
@keyframes ringRotate { from{transform:rotate(0deg);} to{transform:rotate(360deg);} }
.hero-text { flex:1; }
.hero-greeting { font-size:13px;font-weight:500;color:var(--text-muted);letter-spacing:2px;text-transform:uppercase;margin-bottom:6px; }
.hero-content h1 { font-family:'Playfair Display',serif;font-size:42px;font-weight:700;color:var(--hero-h1);line-height:1.1;margin:0 0 14px 0;animation:fadeUp .8s ease both .2s; }
.roles-marquee-wrapper { margin:0 0 22px;overflow:hidden;-webkit-mask-image:linear-gradient(90deg,transparent 0%,black 10%,black 90%,transparent 100%);mask-image:linear-gradient(90deg,transparent 0%,black 10%,black 90%,transparent 100%);border-top:1px solid var(--border);border-bottom:1px solid var(--border);padding:10px 0; }
.roles-marquee { display:flex;overflow:hidden; }
.roles-track { display:flex;align-items:center;gap:18px;white-space:nowrap;animation:marqueeScroll 24s linear infinite; }
.roles-track:hover { animation-play-state:paused; }
@keyframes marqueeScroll { from{transform:translateX(0);} to{transform:translateX(-50%);} }
.role-pill { display:inline-flex;align-items:center;gap:7px;font-family:'Space Mono',monospace;font-size:12px;font-weight:700;color:var(--text-2);background:var(--surface);border:1px solid var(--border-hover);border-radius:20px;padding:5px 14px;flex-shrink:0;transition:color .3s,border-color .3s; }
.role-pill i { font-size:11px;color:var(--accent); }
.role-pill:hover { color:var(--accent);border-color:var(--accent); }
.role-sep { color:var(--accent);font-size:10px;opacity:.4;flex-shrink:0; }
.hero-cta { display:flex;gap:12px;flex-wrap:wrap;animation:fadeUp .8s ease both .5s; }
.btn-primary { padding:10px 22px;background:var(--accent);color:#fff;border-radius:8px;font-weight:600;font-size:14px;border:1px solid transparent;transition:all .3s; }
.btn-primary:hover { background:var(--accent-dark);transform:translateY(-2px);box-shadow:0 6px 20px var(--accent-glow); }
.btn-outline { padding:10px 22px;background:transparent;color:var(--text-2);border-radius:8px;font-weight:600;font-size:14px;border:1px solid var(--border-hover);transition:all .3s; }
.btn-outline:hover { border-color:var(--accent);color:var(--accent);transform:translateY(-2px); }
@keyframes fadeUp { from{opacity:0;transform:translateY(20px);} to{opacity:1;transform:translateY(0);} }

/* ===================== SECTIONS ===================== */
section { padding:0;border-bottom:1px solid var(--section-border);opacity:0;transform:translateY(40px);position:relative;z-index:1; }
.section-tag { display:inline-block;font-family:'Space Mono',monospace;font-size:10px;font-weight:700;letter-spacing:2px;text-transform:uppercase;color:var(--tag-color);background:var(--tag-bg);border:1px solid var(--accent-glow);padding:3px 10px;border-radius:4px;margin-bottom:6px; }
h2 { font-family:'Playfair Display',serif;font-size:26px;font-weight:700;color:var(--heading-color);line-height:1.2;margin:0; }
h3 { font-family:'DM Sans',sans-serif;font-size:16px;font-weight:600;color:var(--text); }
.collapsible-section { padding:0; }
.section-toggle-header { display:flex;align-items:center;justify-content:space-between;padding:22px 24px;cursor:none;transition:background .2s;border-radius:4px; }
.section-toggle-header:hover { background:rgba(255,255,255,.02); }
[data-theme="light"] .section-toggle-header:hover { background:rgba(0,0,0,.02); }
.section-toggle-left { display:flex;flex-direction:column;gap:5px; }
.section-toggle-btn { width:36px;height:36px;border-radius:50%;border:1px solid var(--border-hover);background:var(--surface);color:var(--text-2);display:flex;align-items:center;justify-content:center;font-size:14px;flex-shrink:0;transition:all .3s; }
.section-toggle-btn i { transition:transform .35s cubic-bezier(.4,0,.2,1); }
.section-toggle-header:hover .section-toggle-btn { border-color:var(--accent);color:var(--accent);background:var(--tag-bg); }
.section-body { overflow:hidden;max-height:4000px;padding:0 24px 24px;transition:max-height .5s cubic-bezier(.4,0,.2,1),padding .4s ease,opacity .35s ease;opacity:1; }
.section-body.collapsed { max-height:0;padding-top:0;padding-bottom:0;opacity:0; }

/* ===================== ABOUT ===================== */
.about-body-inner p { font-size:15px;color:var(--about-text);line-height:1.75; }
.about-stats { display:flex;gap:28px;margin-top:20px;flex-wrap:wrap; }
.stat { display:flex;flex-direction:column;gap:2px; }
.stat-num { font-family:'Space Mono',monospace;font-size:22px;font-weight:700;color:var(--accent); }
.stat-label { font-size:11px;color:var(--text-muted);text-transform:uppercase;letter-spacing:1px; }

/* ===================== SKILLS ===================== */
.skills-list { display:grid;grid-template-columns:repeat(auto-fit,minmax(165px,1fr));gap:14px; }
.skill-card { position:relative;padding:13px 16px;border-radius:12px;font-weight:500;font-size:13px;display:flex;align-items:center;gap:10px;background:var(--card-bg);border:1px solid var(--border);color:var(--text-2);transition:all .3s;overflow:hidden;opacity:0;transform:translateY(16px); }
.skill-card.card-in { opacity:1;transform:translateY(0);transition:opacity .45s ease,transform .45s ease,border-color .3s,box-shadow .3s; }
.skill-card::before { content:"";position:absolute;inset:0;background:linear-gradient(120deg,transparent,var(--accent-glow),transparent);opacity:0;transition:opacity .3s; }
.skill-card:hover { transform:translateY(-4px) scale(1.02);border-color:var(--accent);color:var(--text);box-shadow:0 8px 24px rgba(0,0,0,.3); }
.skill-card:hover::before { opacity:1; }
.skill-card i { font-size:15px;color:var(--accent);min-width:18px;position:relative;z-index:1; }
.skill-card span { flex:1;position:relative;z-index:1; }
.skill-card:nth-child(1)  { background:linear-gradient(135deg,rgba(20,184,166,.12),var(--card-bg)); }
.skill-card:nth-child(2)  { background:linear-gradient(135deg,rgba(167,139,250,.12),var(--card-bg)); }
.skill-card:nth-child(3)  { background:linear-gradient(135deg,rgba(100,181,246,.12),var(--card-bg)); }
.skill-card:nth-child(4)  { background:linear-gradient(135deg,rgba(149,117,205,.12),var(--card-bg)); }
.skill-card:nth-child(5)  { background:linear-gradient(135deg,rgba(79,195,247,.12),var(--card-bg)); }
.skill-card:nth-child(6)  { background:linear-gradient(135deg,rgba(255,183,77,.12),var(--card-bg)); }
.skill-card:nth-child(7)  { background:linear-gradient(135deg,rgba(3,169,244,.12),var(--card-bg)); }
.skill-card:nth-child(8)  { background:linear-gradient(135deg,rgba(20,184,166,.12),var(--card-bg)); }
.skill-card:nth-child(9)  { background:linear-gradient(135deg,rgba(240,98,146,.12),var(--card-bg)); }
.skill-card:nth-child(10) { background:linear-gradient(135deg,rgba(174,213,129,.12),var(--card-bg)); }
.skill-card:nth-child(11) { background:linear-gradient(135deg,rgba(255,138,101,.12),var(--card-bg)); }

/* ===================== PROJECTS ===================== */
.project-card { background:var(--card-bg);padding:22px 24px;border-radius:14px;box-shadow:var(--card-shadow);margin-bottom:16px;border:1px solid var(--border);transition:transform .3s,border-color .3s,box-shadow .3s;position:relative;overflow:hidden; }
.project-card::before { content:'';position:absolute;top:0;left:0;width:3px;height:100%;background:var(--accent);transform:scaleY(0);transition:transform .4s ease;transform-origin:bottom; }
.project-card:hover { transform:translateY(-4px);border-color:var(--accent);box-shadow:0 12px 36px rgba(0,0,0,.4); }
.project-card:hover::before { transform:scaleY(1); }
.project-tag { font-family:'Space Mono',monospace;font-size:10px;letter-spacing:1.5px;text-transform:uppercase;color:var(--accent-2);margin-bottom:8px;opacity:.8; }
.project-card h3 { font-size:16px;color:var(--text);margin-bottom:10px; }
.project-card p { color:var(--text-2);font-size:14px; }
.tools-used { font-size:12px;color:var(--text-muted);margin-top:4px; }
.dashboard-btn { margin-top:14px;padding:8px 16px;background:transparent;color:var(--accent);border:1px solid var(--accent);border-radius:8px;font-weight:600;font-size:13px;font-family:'DM Sans',sans-serif;transition:all .3s; }
.dashboard-btn:hover { background:var(--accent);color:#fff;transform:translateX(4px); }
.project-card-actions { display:flex;gap:10px;flex-wrap:wrap;margin-top:14px; }
.github-btn { display:inline-flex;align-items:center;gap:7px;color:var(--text-2);border-color:var(--border-hover); }
.github-btn:hover { background:var(--surface-2);color:var(--text);border-color:var(--accent-2); }

/* ===================== POPUP BASE ===================== */
.popup-overlay { display:none;position:fixed;top:0;left:0;width:100%;height:100%;background:rgba(0,0,0,.85);backdrop-filter:blur(10px);z-index:2000;justify-content:center;align-items:center;padding:10px;animation:popupFade .25s ease; }
@keyframes popupFade { from{opacity:0;} to{opacity:1;} }
.popup-content { position:relative;width:90%;max-width:820px;background:var(--surface);border-radius:14px;overflow:hidden;border:1px solid var(--border-hover);animation:popupSlide .3s ease; }
@keyframes popupSlide { from{transform:scale(.95);opacity:0;} to{transform:scale(1);opacity:1;} }
.popup-content img { width:100%;display:block;object-fit:contain; }
.popup-close { position:absolute;top:10px;right:10px;background:rgba(255,82,82,.9);color:#fff;font-size:18px;font-weight:bold;border-radius:50%;width:30px;height:30px;text-align:center;line-height:30px;cursor:none;z-index:10;transition:transform .2s; }
.popup-close:hover { transform:scale(1.15); }

/* PDF project popup */
.pdf-popup-overlay .popup-content, .pdf-popup-content { max-width:960px;width:92%;padding:0;overflow:hidden;background:var(--surface); }
.pdf-popup-header { padding:18px 24px 14px;border-bottom:1px solid var(--border);background:var(--surface-2); }
.pdf-popup-header h3 { font-size:15px;font-weight:700;color:var(--text);display:flex;align-items:center;gap:10px;margin-bottom:4px; }
.pdf-popup-header h3 i { color:var(--accent); }
.pdf-popup-header p { font-size:11px;color:var(--text-muted);margin:0;font-family:'Space Mono',monospace;letter-spacing:.5px; }
.pdf-viewer-wrap { padding:16px;background:var(--bg-2); }
.pdf-viewer-wrap iframe { border-radius:8px;display:block; }
.cert-popup-content { max-width:900px;padding:14px;background:var(--surface); }

/* ===================== EXP TILES ===================== */
.exp-tiles-grid { display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:24px;padding-bottom:8px; }
.exp-tile { position:relative;height:260px;perspective:1100px; }
.exp-tile-front,.exp-tile-back { position:absolute;inset:0;border-radius:16px;backface-visibility:hidden;-webkit-backface-visibility:hidden;transition:transform .65s cubic-bezier(.4,.2,.2,1);border:1px solid var(--border);overflow:hidden; }
.exp-tile-front { background:var(--card-bg);display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;padding:24px 20px 18px;cursor:none;transform:rotateY(0deg);box-shadow:var(--card-shadow);transition:transform .65s cubic-bezier(.4,.2,.2,1),border-color .3s,box-shadow .3s; }
.exp-tile-front::before { content:'';position:absolute;inset:0;background:linear-gradient(135deg,var(--accent-glow),transparent 60%);opacity:0;transition:opacity .4s; }
.exp-tile:hover .exp-tile-front { border-color:var(--accent);box-shadow:0 10px 32px rgba(0,0,0,.4); }
.exp-tile:hover .exp-tile-front::before { opacity:1; }
.exp-tile-logo-wrap { width:72px;height:72px;border-radius:14px;background:var(--surface-2);border:1px solid var(--border-hover);display:flex;align-items:center;justify-content:center;overflow:hidden;flex-shrink:0; }
.exp-tile-logo { width:56px;height:56px;object-fit:contain; }
.exp-tile-info { display:flex;flex-direction:column;align-items:center;gap:4px;text-align:center;flex:1; }
.exp-tile-role { font-family:'Space Mono',monospace;font-size:12px;font-weight:700;color:var(--accent);letter-spacing:.5px; }
.exp-tile-company { font-size:14px;font-weight:600;color:var(--text); }
.exp-tile-period { font-size:11px;color:var(--text-muted);margin-top:2px; }
.exp-tile-badge { position:absolute;top:14px;right:14px;font-family:'Space Mono',monospace;font-size:9px;font-weight:700;letter-spacing:1px;text-transform:uppercase;background:var(--accent);color:#fff;padding:3px 8px;border-radius:10px;animation:badgePulse 2.5s ease-in-out infinite; }
@keyframes badgePulse { 0%,100%{box-shadow:0 0 0 0 rgba(20,184,166,.4);} 50%{box-shadow:0 0 0 6px rgba(20,184,166,0);} }
.exp-tile-hint { font-size:10px;color:var(--text-muted);display:flex;align-items:center;gap:5px;opacity:.7;margin-top:2px; }
.exp-tile-hint i { font-size:10px; }
.exp-tile-back { background:var(--surface-2);transform:rotateY(180deg);display:flex;flex-direction:column;padding:20px;gap:10px;overflow-y:auto; }
.exp-tile.flipped .exp-tile-front { transform:rotateY(-180deg); }
.exp-tile.flipped .exp-tile-back  { transform:rotateY(0deg); }
.exp-back-header { display:flex;align-items:center;gap:12px;padding-bottom:10px;border-bottom:1px solid var(--border);flex-shrink:0; }
.exp-back-logo { width:40px;height:40px;object-fit:contain;border-radius:8px;background:var(--surface);padding:4px;flex-shrink:0; }
.exp-back-header h3 { font-size:14px;color:var(--text);margin:0; }
.exp-back-company { font-size:11px;color:var(--text-muted);margin:2px 0 0; }
.exp-back-list { list-style:disc;padding-left:16px;flex:1;overflow-y:auto; }
.exp-back-list li { font-size:12px;color:var(--text-2);line-height:1.55;margin-bottom:6px; }
.exp-back-list em { font-style:italic;color:var(--accent); }
.exp-close-btn { margin-top:auto;padding:7px 14px;background:transparent;color:var(--text-muted);border:1px solid var(--border-hover);border-radius:8px;font-size:12px;font-family:'DM Sans',sans-serif;font-weight:600;transition:all .25s;flex-shrink:0;align-self:flex-start; }
.exp-close-btn:hover { border-color:var(--accent);color:var(--accent); }

/* ===================== VIRTUAL TILES ===================== */
.virtual-hint { font-size:12px;color:var(--text-muted);margin-bottom:16px;display:flex;align-items:center;gap:7px;font-family:'Space Mono',monospace;letter-spacing:.5px; }
.virtual-hint i { color:var(--accent); }
.tiles-grid { display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:28px;justify-items:center;padding-bottom:10px; }
.tile { width:240px;height:240px;perspective:1000px;position:relative; }
.tile-front,.tile-back { width:100%;height:100%;border-radius:14px;box-shadow:var(--card-shadow);position:absolute;top:0;left:0;backface-visibility:hidden;transition:transform .6s ease;display:flex;justify-content:center;align-items:center;padding:20px;border:1px solid var(--border); }
.tile-front { background:var(--surface);flex-direction:column;gap:14px;cursor:none;transition:transform .6s ease,border-color .3s,box-shadow .3s;position:relative; }
.tile-front.deloitte { background-color:#a0eb3f;border-color:transparent; }
.tile-front.deloitte .tile-logo { width:110px; }
.tile-front.citi { background-color:#003b70;border-color:transparent; }
.tile-front.citi .tile-logo { width:110px; }
.tile-hint { position:absolute;left:0;right:0;bottom:14px;font-size:10px;color:var(--text-muted);display:flex;align-items:center;justify-content:center;gap:5px;opacity:.7;margin-top:0; }
.tile-hint i { font-size:10px; }
.tile-front.deloitte .tile-hint,
.tile-front.deloitte .tile-hint i { color:rgba(0,0,0,.55); }
.tile-front.citi .tile-hint,
.tile-front.citi .tile-hint i { color:rgba(255,255,255,.7); }
.tile:not(.active):hover .tile-front { border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-glow),0 12px 36px rgba(0,0,0,.5); }
.tile-back { background:var(--surface);transform:rotateY(180deg);flex-direction:column;justify-content:space-between;overflow-y:auto;text-align:center; }
.tile.active .tile-front { transform:rotateY(180deg); }
.tile.active .tile-back  { transform:rotateY(0deg); }
.back-content { display:flex;flex-direction:column;align-items:center; }
.back-content h3 { font-size:13px;margin:8px 0;color:var(--text);line-height:1.4; }
.back-content ul { text-align:left;padding-left:16px;font-size:12px;list-style:disc;color:var(--text-2); }
.back-content ul li { margin-bottom:4px;line-height:1.45; }
.tile-logo-small { width:70px;background:#f4f4f4;padding:5px;border-radius:6px; }
.close-tile { margin-top:10px;padding:5px 12px;background:var(--accent-dark);color:#fff;border:none;border-radius:6px;font-size:12px;font-family:'DM Sans',sans-serif;transition:background .2s; }
.close-tile:hover { background:var(--accent); }

/* =====================
   CERTIFICATIONS — BADGE GRID
===================== */
.cert-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(175px, 1fr));
    gap: 20px;
}

/* Each tile */
.cert-card-tile {
    position: relative;
    background: var(--cert-tile-bg);
    border: 1px solid var(--border);
    border-radius: 18px;
    padding: 22px 16px 18px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 14px;
    cursor: none;
    transition: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
    overflow: hidden;
    opacity: 0;
    transform: translateY(14px) scale(0.97);
    text-align: center;
}
.cert-card-tile.card-in {
    opacity: 1;
    transform: translateY(0) scale(1);
    transition: opacity 0.4s ease, transform 0.4s ease, border-color 0.3s, box-shadow 0.3s, background 0.3s;
}
.cert-card-tile::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, var(--accent-glow), transparent 65%);
    opacity: 0;
    transition: opacity 0.3s;
    pointer-events: none;
    border-radius: inherit;
}
.cert-card-tile:hover {
    background: var(--cert-tile-bg-hover);
    border-color: var(--accent);
    transform: translateY(-6px) scale(1.03);
    box-shadow: 0 14px 40px rgba(0,0,0,0.45), 0 0 0 2px var(--accent-glow);
}
.cert-card-tile:hover::before { opacity: 1; }

/* Badge image (circular badge icons from Credly/DataCamp/Google etc.) */
.cert-card-tile-badge-wrap {
    width: 90px;
    height: 90px;
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    z-index: 1;
    /* subtle glow ring */
    filter: drop-shadow(0 4px 12px rgba(20,184,166,0.25));
    transition: filter 0.3s, transform 0.3s;
}
.cert-card-tile:hover .cert-card-tile-badge-wrap {
    filter: drop-shadow(0 6px 20px rgba(20,184,166,0.45));
    transform: scale(1.07);
}
.cert-card-tile-badge {
    width: 90px;
    height: 90px;
    object-fit: contain;
    display: block;
}

/* Plain logo (Alteryx, Databricks, Microsoft) */
.cert-card-tile-logo-plain {
    width: 90px;
    height: 90px;
    border-radius: 16px;
    background: var(--logo-wrap-bg);
    border: 1px solid var(--border-hover);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}
.cert-card-tile-logo-img {
    width: 60px;
    height: 60px;
    object-fit: contain;
}

/* Text below the badge */
.cert-card-tile-info {
    display: flex;
    flex-direction: column;
    gap: 4px;
    position: relative;
    z-index: 1;
}
.cert-card-tile-issuer {
    font-family: 'Space Mono', monospace;
    font-size: 9px;
    font-weight: 700;
    letter-spacing: 1px;
    text-transform: uppercase;
    color: var(--accent);
    opacity: 0.85;
}
.cert-card-tile-name {
    font-size: 12px;
    font-weight: 600;
    color: var(--text);
    line-height: 1.4;
}

/* "Details" hover label */
.cert-card-tile-hover {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: 10px;
    background: linear-gradient(to top, rgba(20,184,166,0.18), transparent);
    font-size: 11px;
    font-weight: 700;
    font-family: 'Space Mono', monospace;
    color: var(--accent);
    letter-spacing: 0.5px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    opacity: 0;
    transform: translateY(4px);
    transition: opacity 0.3s, transform 0.3s;
}
.cert-card-tile:hover .cert-card-tile-hover {
    opacity: 1;
    transform: translateY(0);
}

/* =====================
   CERT DETAIL POPUP MODAL
===================== */
.cert-detail-overlay {
    z-index: 2100;
}
.cert-detail-popup-content {
    max-width: 640px;
    width: 92%;
    max-height: 88vh;
    overflow-y: auto;
    padding: 32px;
    background: var(--cert-detail-bg);
    border-radius: 20px;
    border: 1px solid var(--border-hover);
    position: relative;
    scrollbar-width: thin;
    scrollbar-color: var(--accent) transparent;
}
.cert-detail-popup-content::-webkit-scrollbar { width: 4px; }
.cert-detail-popup-content::-webkit-scrollbar-track { background: transparent; }
.cert-detail-popup-content::-webkit-scrollbar-thumb { background: var(--accent); border-radius: 2px; }

.cert-detail-close {
    position: absolute;
    top: 14px;
    right: 14px;
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: rgba(255,82,82,0.85);
    color: #fff;
    font-size: 18px;
    font-weight: bold;
    border: none;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: none;
    transition: transform 0.2s, background 0.2s;
    line-height: 1;
    z-index: 5;
}
.cert-detail-close:hover { transform: scale(1.15); background: #ff3232; }

/* Header inside popup */
.cdp-header {
    display: flex;
    align-items: flex-start;
    gap: 20px;
    margin-bottom: 24px;
    padding-bottom: 20px;
    border-bottom: 1px solid var(--border);
    flex-wrap: wrap;
}
.cdp-badge-wrap {
    width: 90px;
    height: 90px;
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    filter: drop-shadow(0 4px 16px rgba(20,184,166,0.3));
}
.cdp-badge-img {
    width: 90px;
    height: 90px;
    object-fit: contain;
    display: block;
}
.cdp-logo-wrap {
    width: 80px;
    height: 80px;
    flex-shrink: 0;
    border-radius: 16px;
    background: var(--logo-wrap-bg);
    border: 1px solid var(--border-hover);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}
.cdp-logo-img {
    width: 56px;
    height: 56px;
    object-fit: contain;
}
.cdp-header-text {
    flex: 1;
    min-width: 0;
    display: flex;
    flex-direction: column;
    gap: 5px;
}
.cdp-header-text h3 {
    font-size: 18px;
    font-weight: 700;
    color: var(--text);
    margin: 0;
    line-height: 1.3;
}
.cdp-issuer {
    font-size: 13px;
    color: var(--text-muted);
    display: flex;
    align-items: center;
    gap: 6px;
    margin: 0;
}
.cdp-issuer i { color: var(--accent); font-size: 12px; }

/* Modules list */
.cdp-modules {
    margin-bottom: 24px;
}

/* View button */
.cdp-view-btn {
    display: inline-flex;
    align-items: center;
    gap: 9px;
    padding: 11px 22px;
    background: var(--accent);
    color: #fff;
    border-radius: 10px;
    font-size: 14px;
    font-weight: 600;
    font-family: 'DM Sans', sans-serif;
    border: none;
    transition: all 0.25s;
}
.cdp-view-btn:hover {
    background: var(--accent-dark);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px var(--accent-glow);
}
.cdp-view-btn i { font-size: 13px; }

/* ===================== SHARED CERT STYLES ===================== */
.cert-status-badge { font-family:'Space Mono',monospace;font-size:9px;font-weight:700;letter-spacing:.5px;text-transform:uppercase;padding:4px 12px;border-radius:10px;flex-shrink:0;white-space:nowrap;align-self:flex-start; }
.cert-complete { background:rgba(20,184,166,.15);color:var(--accent);border:1px solid rgba(20,184,166,.3); }
.cert-modules { display:flex;flex-direction:column;gap:9px; }
.cert-modules li { display:flex;align-items:flex-start;gap:10px;font-size:13px;color:var(--text-2);line-height:1.5; }
.cert-modules li i { color:var(--accent);font-size:12px;margin-top:3px;flex-shrink:0; }
.cert-view-btn { display:inline-flex;align-items:center;gap:8px;padding:10px 20px;background:var(--accent);color:#fff;border-radius:10px;font-size:14px;font-weight:600;font-family:'DM Sans',sans-serif;transition:all .25s;border:none; }
.cert-view-btn:hover { background:var(--accent-dark);transform:translateY(-2px);box-shadow:0 6px 20px var(--accent-glow); }
.cert-view-btn i { font-size:12px; }

/* ===================== INTERESTS ===================== */
.interests-grid { display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:14px; }
.interest-card { position:relative;padding:16px 18px;border-radius:12px;font-weight:500;font-size:14px;display:flex;align-items:center;gap:12px;background:rgba(255,255,255,.04);backdrop-filter:blur(14px);border:1px solid var(--border);color:var(--text);transition:all .3s;overflow:hidden;opacity:0;transform:translateY(16px); }
.interest-card.card-in { opacity:1;transform:translateY(0);transition:opacity .45s ease,transform .45s ease,border-color .3s,box-shadow .3s; }
.interest-card.card-in:hover { transform:translateY(-5px) scale(1.02);border-color:var(--accent);box-shadow:0 8px 24px rgba(0,0,0,.25); }
.interest-card::before { content:"";position:absolute;inset:0;background:linear-gradient(120deg,transparent,var(--accent-glow),transparent);opacity:0;transition:opacity .3s; }
.interest-card:hover::before { opacity:1; }
.interest-card i { font-size:18px;color:var(--accent);min-width:20px;position:relative;z-index:1; }
.interest-card span { position:relative;z-index:1; }
.interest-card:nth-child(1) { background:linear-gradient(135deg,rgba(20,184,166,.1),rgba(255,255,255,.02)); }
.interest-card:nth-child(2) { background:linear-gradient(135deg,rgba(167,139,250,.1),rgba(255,255,255,.02)); }
.interest-card:nth-child(3) { background:linear-gradient(135deg,rgba(255,183,77,.1),rgba(255,255,255,.02)); }
.interest-card:nth-child(4) { background:linear-gradient(135deg,rgba(79,195,247,.1),rgba(255,255,255,.02)); }
.interest-card:nth-child(5) { background:linear-gradient(135deg,rgba(129,199,132,.1),rgba(255,255,255,.02)); }
.interest-card:nth-child(6) { background:linear-gradient(135deg,rgba(240,98,146,.1),rgba(255,255,255,.02)); }
.interest-card:nth-child(7) { background:linear-gradient(135deg,rgba(174,213,129,.1),rgba(255,255,255,.02)); }

/* ===================== VOLUNTEERING ===================== */
.volunteer { background:var(--job-bg);padding:18px 20px;border-radius:14px;margin-bottom:12px;border:1px solid var(--border);display:flex;align-items:center;gap:18px;transition:transform .3s,border-color .3s; }
.volunteer:hover { transform:translateY(-4px);border-color:var(--accent); }
.volunteer-info h3 { font-size:15px;margin-bottom:4px; }
.volunteer-info p { color:var(--text-2);font-size:13px;margin:3px 0; }
.volunteer-logo { width:52px;height:52px;object-fit:contain;flex-shrink:0;border-radius:8px; }

/* ===================== CONTACT ===================== */
.contact-list { padding:0; }
.contact-list li { margin-bottom:14px;font-size:16px;color:var(--text-2);display:flex;align-items:center;gap:12px;transition:color .2s; }
.contact-list li:hover { color:var(--accent); }
.contact-list li i { color:var(--accent);width:18px; }
.contact-list a { color:var(--text-2);transition:color .3s; }
.contact-list a:hover { color:var(--accent); }

/* ===================== FOOTER ===================== */
footer { padding:24px;background:var(--footer-bg);color:rgba(255,255,255,.8); }
.footer-inner { display:flex;align-items:center;justify-content:center;gap:14px; }
.footer-logo { font-family:'Space Mono',monospace;font-weight:700;font-size:14px;color:rgba(255,255,255,.9);border:1px solid rgba(255,255,255,.3);padding:2px 7px;border-radius:4px; }
footer p { font-size:13px;color:rgba(255,255,255,.6);margin:0; }

/* ===================== ANIMATION ===================== */
.fade-in { opacity:1 !important;transform:translateY(0) !important;transition:opacity .7s ease-out,transform .7s ease-out; }

/* ===================== RESPONSIVE ===================== */
@media (max-width: 768px) {
    .hamburger { display:flex; }
    .nav-links { position:fixed;top:54px;left:0;right:0;background:var(--bg);border-bottom:1px solid var(--border);flex-direction:column;align-items:flex-start;padding:12px 20px 20px;transform:translateY(-110%);transition:transform .3s;z-index:998;backdrop-filter:blur(20px); }
    .nav-links.open { transform:translateY(0); }
    .nav-links li { margin:0;width:100%; }
    .nav-links li a { display:block;padding:12px 8px;font-size:15px;border-bottom:1px solid var(--border); }
    .nav-links li:last-child a { border-bottom:none; }
    .hero-content { flex-direction:column;text-align:center;gap:24px; }
    .hero-cta { justify-content:center; }
    .profile-pic { width:130px;height:130px; }
    .hero-content h1 { font-size:32px; }
    .hero-background { padding:44px 20px 36px; }
    h2 { font-size:22px; }
    .section-toggle-header { padding:18px 20px; }
    .section-body { padding:0 20px 20px; }
    .section-body.collapsed { padding:0; }
    .exp-tiles-grid { grid-template-columns:1fr; }
    .exp-tile { height:220px; }
    .cert-grid { grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:14px; }
    .cert-card-tile-badge-wrap, .cert-card-tile-logo-plain { width:72px;height:72px; }
    .cert-card-tile-badge { width:72px;height:72px; }
    .cert-detail-popup-content { padding:20px; }
    .cdp-header { gap:14px; }
    .cdp-badge-wrap, .cdp-badge-img { width:70px;height:70px; }
}
@media (max-width: 600px) {
    .skills-list { grid-template-columns:repeat(2,1fr); }
    .interests-grid { grid-template-columns:1fr; }
    .volunteer { flex-direction:column;text-align:center; }
    .about-stats { gap:20px; }
    .cert-grid { grid-template-columns:repeat(2,1fr); }
    .tiles-grid { grid-template-columns:1fr;justify-items:center; }
    .cdp-header { flex-direction:column;align-items:center;text-align:center; }
    .cdp-issuer { justify-content:center; }
}
/* =====================================================================
   CERT DETAIL POPUP — INLINE VIEWER
   Add these rules to style.css (or paste at the bottom).
   They replace the old #cert-popup / cert-popup-content rules.
   ===================================================================== */

/* 1. Remove the old separate cert file popup entirely — it's no longer used.
      If you still have #cert-popup in your HTML you can delete that element,
      but leaving it in won't cause any harm since it's never opened now.     */

/* 2. The detail popup itself needs slightly more room to hold the viewer.    */
.cert-detail-popup-content {
    max-width:   660px;          /* was 640px — a touch wider for the viewer  */
    max-height:  92vh;           /* was 88vh — more vertical space            */
}

/* 3. "View Certificate" / "Hide Certificate" toggle button                   */
/*    Inherits most styles from .cert-view-btn / .cdp-view-btn already.       */
.cdp-view-btn[data-open="true"] {
    background: var(--surface-2);
    color:      var(--accent);
    border:     1px solid var(--accent);
}
.cdp-view-btn[data-open="true"]:hover {
    background: var(--tag-bg);
    transform:  translateY(-2px);
    box-shadow: 0 6px 20px var(--accent-glow);
}

/* 4. Inline viewer container — collapsed by default, expands with class      */
.cdp-inline-viewer {
    overflow:      hidden;
    max-height:    0;
    margin-top:    0;
    border-radius: 10px;
    transition:    max-height 0.45s cubic-bezier(0.4, 0, 0.2, 1),
                   margin-top 0.3s ease;
}
.cdp-inline-viewer--open {
    max-height:  70vh;            /* tall enough for a readable PDF page      */
    margin-top:  20px;
}

/* 5. The iframe / image inside the viewer                                    */
.cdp-inline-iframe {
    width:         100%;
    height:        62vh;
    border:        none;
    border-radius: 10px;
    display:       block;
    background:    #000;          /* prevents flash of white while PDF loads  */
}

.cdp-inline-img {
    width:         100%;
    max-height:    62vh;
    object-fit:    contain;
    border-radius: 10px;
    display:       block;
}

/* 6. Thin scrollbar on the detail popup (already in base CSS but repeated
      here for completeness — safe to keep both)                              */
.cert-detail-popup-content {
    scrollbar-width: thin;
    scrollbar-color: var(--accent) transparent;
}
.cert-detail-popup-content::-webkit-scrollbar       { width: 4px; }
.cert-detail-popup-content::-webkit-scrollbar-track { background: transparent; }
.cert-detail-popup-content::-webkit-scrollbar-thumb { background: var(--accent); border-radius: 2px; }

/* Prevent PDF iframe overflow on smaller screens */
.cdp-inline-iframe {
    min-height: 500px;
}

@media (max-width: 768px) {
    .cdp-inline-iframe {
        height: 55vh;
        min-height: 420px;
    }
}