/* ── VARIABLES ─────────────────────────────────────── */
:root {
  --bg:       #020810;
  --bg2:      #060f1e;
  --bg3:      #0a1628;
  --surface:  #0d1f3c;
  --border:   rgba(0, 200, 255, 0.12);
  --cyan:     #00d4ff;
  --blue:     #0066ff;
  --glow:     rgba(0, 212, 255, 0.15);
  --text:     #e8f4ff;
  --muted:    #6b8db5;
  --font-h:   'Syne', sans-serif;
  --font-b:   'Outfit', sans-serif;
  --font-m:   'JetBrains Mono', monospace;
}

/* ── RESET ─────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }

body {
  font-family: var(--font-b);
  background: var(--bg);
  color: var(--text);
  overflow-x: hidden;
  cursor: default;
}

/* ── SCROLLBAR ─────────────────────────────────────── */
::-webkit-scrollbar { width: 5px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb { background: var(--cyan); border-radius: 10px; }

/* ── NAV ───────────────────────────────────────────── */
#navbar {
  position: fixed; top: 0; left: 0; width: 100%; z-index: 90;
  padding: 16px 0;
  background: rgba(2, 8, 16, 0.7);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
  transition: padding .3s;
}
#navbar.scrolled { padding: 10px 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-family: var(--font-m);
  font-size: 13px; font-weight: 500;
  color: var(--cyan);
  letter-spacing: .5px;
}

.nav-logo img {
  height:82px;
  width: auto;
  object-fit: contain;
}

.logo-bracket { color: var(--cyan); }

.nav-links { display: flex; gap: 32px; }
.nav-links a {
  font-family: var(--font-b); font-size: 14px; font-weight: 500;
  color: var(--muted); text-decoration: none;
  transition: color .2s;
  position: relative;
}
.nav-links a::after {
  content: ''; position: absolute; bottom: -4px; left: 0;
  width: 0; height: 1px; background: var(--cyan);
  transition: width .3s;
}
.nav-links a:hover { color: var(--cyan); }
.nav-links a:hover::after { width: 100%; }

/* ── HERO ───────────────────────────────────────────── */
#hero {
  position: relative; min-height: 100vh;
  display: flex; flex-direction: column;
  align-items: center; justify-content: center;
  text-align: center; padding: 100px 24px 60px;
  overflow: hidden;
}

#particle-canvas {
  position: absolute; inset: 0;
  width: 100%; height: 100%;
  pointer-events: none;
}

/* subtle radial glow */
#hero::before {
  content: '';
  position: absolute; top: 10%; left: 50%;
  transform: translateX(-50%);
  width: 700px; height: 700px; border-radius: 50%;
  background: radial-gradient(circle, rgba(0,100,255,0.12) 0%, transparent 70%);
  pointer-events: none;
}

.hero-content { position: relative; z-index: 2; max-width: 780px; }

.hero-tag {
  display: inline-flex; align-items: center; gap: 8px;
  font-family: var(--font-m); font-size: 13px;
  color: var(--cyan);
  background: rgba(0, 212, 255, 0.08);
  border: 1px solid rgba(0, 212, 255, 0.2);
  padding: 7px 18px; border-radius: 100px;
  margin-bottom: 32px;
  letter-spacing: .5px;
}
.tag-dot {
  width: 7px; height: 7px; border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 10px var(--cyan);
  animation: pulse 2s infinite;
}
@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50%       { opacity: .5; transform: scale(0.8); }
}

.hero-title {
  font-family: var(--font-h);
  font-size: clamp(52px, 9vw, 96px);
  font-weight: 800;
  line-height: 1.0;
  letter-spacing: -2px;
  margin-bottom: 24px;
  display: flex; flex-direction: column; gap: 4px;
}
.title-line { display: block; }
.accent { color: var(--cyan); }

.year-badge {
  font-style: normal;
  background: linear-gradient(135deg, var(--blue), var(--cyan));
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-sub {
  font-size: 17px; font-weight: 300; color: var(--muted);
  line-height: 1.7; margin-bottom: 40px;
  max-width: 600px; margin-left: auto; margin-right: auto;
}

.hero-actions {
  display: flex; gap: 14px; justify-content: center; flex-wrap: wrap;
  margin-bottom: 48px;
}

.btn-primary {
  padding: 14px 32px;
  background: var(--cyan);
  color: #000; font-family: var(--font-b);
  font-size: 15px; font-weight: 700;
  border-radius: 8px; text-decoration: none;
  transition: all .25s;
  box-shadow: 0 0 24px rgba(0,212,255,0.3);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 0 40px rgba(0,212,255,0.5);
}

.btn-ghost {
  padding: 14px 32px;
  background: transparent;
  color: var(--text); font-family: var(--font-b);
  font-size: 15px; font-weight: 500;
  border: 1px solid var(--border);
  border-radius: 8px; text-decoration: none;
  transition: all .25s;
}
.btn-ghost:hover {
  border-color: var(--cyan); color: var(--cyan);
  background: rgba(0,212,255,0.05);
  transform: translateY(-2px);
}

.hero-stats {
  position: relative; z-index: 2;
  display: flex; gap: 12px; justify-content: center; flex-wrap: wrap;
}
.stat-pill {
  font-family: var(--font-b); font-size: 13px; font-weight: 500;
  color: var(--muted);
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--border);
  padding: 8px 18px; border-radius: 100px;
}

.scroll-hint {
  position: absolute; bottom: 28px; left: 50%; transform: translateX(-50%);
  font-family: var(--font-m); font-size: 11px; color: var(--muted);
  opacity: .5; animation: bounce 2s infinite;
  letter-spacing: 2px;
}
@keyframes bounce {
  0%, 100% { transform: translateX(-50%) translateY(0); }
  50%       { transform: translateX(-50%) translateY(6px); }
}

/* ── REVEAL ANIMATION ──────────────────────────────── */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity .7s ease, transform .7s ease;
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

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

/* ── SECTION COMMONS ───────────────────────────────── */
section { padding: 100px 0; }

.section-tag {
  font-family: var(--font-m); font-size: 13px;
  color: var(--cyan); margin-bottom: 16px;
  letter-spacing: 2px;
  display: inline-block;
  position: relative;
}

.section-tag::before {
  content: "> ";
  color: var(--cyan);
  opacity: 0.6;
}
.section-title {
  font-family: var(--font-h);
  font-size: clamp(36px, 5vw, 56px);
  font-weight: 800; line-height: 1.1;
  letter-spacing: -1.5px;
  margin-bottom: 16px;
}
.section-sub {
  font-size: 16px; color: var(--muted);
  max-width: 520px; line-height: 1.7;
  margin-bottom: 48px;
}

/* ── ABOUT ─────────────────────────────────────────── */
#about { background: var(--bg2); }

.about-grid {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 20px; margin-bottom: 40px;
}

.about-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 16px; padding: 32px 28px;
  transition: transform .3s, border-color .3s, box-shadow .3s;
  position: relative; overflow: hidden;
}
.about-card::before {
  content: ''; position: absolute; top: 0; left: 0; right: 0; height: 2px;
  background: linear-gradient(90deg, transparent, var(--cyan), transparent);
  opacity: 0; transition: opacity .3s;
}
.about-card:hover { transform: translateY(-6px); border-color: var(--cyan); }
.about-card:hover { box-shadow: 0 16px 40px rgba(0,212,255,0.1); }
.about-card:hover::before { opacity: 1; }

.about-icon { font-size: 36px; margin-bottom: 16px; }
.about-card h3 {
  font-family: var(--font-h); font-size: 19px; font-weight: 700;
  margin-bottom: 10px;
}
.about-card p { font-size: 14px; color: var(--muted); line-height: 1.7; }

.event-strip {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: 16px; padding: 28px 32px;
  display: flex; align-items: center;
  justify-content: space-around; flex-wrap: wrap; gap: 20px;
}
.strip-item { display: flex; align-items: center; gap: 14px; }
.strip-icon { font-size: 24px; }
.strip-label { font-family: var(--font-m); font-size: 11px; color: var(--muted); letter-spacing: 1px; text-transform: uppercase; }
.strip-val { font-family: var(--font-h); font-size: 16px; font-weight: 700; margin-top: 2px; }
.strip-divider { width: 1px; height: 40px; background: var(--border); }

/* ── SPEAKER ───────────────────────────────────────── */
#speaker { background: var(--bg); }

.speaker-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 24px; padding: 48px;
  display: flex; gap: 52px; align-items: flex-start;
  position: relative; overflow: hidden;
}
.speaker-card::before {
  content: '';
  position: absolute; top: -100px; right: -100px;
  width: 400px; height: 400px; border-radius: 50%;
  background: radial-gradient(circle, rgba(0,212,255,0.06) 0%, transparent 70%);
  pointer-events: none;
}

.speaker-left {
  flex-shrink: 0;
  display: flex; flex-direction: column; align-items: center; gap: 20px;
}

.speaker-img-wrap { position: relative; }
.speaker-img {
  width: 200px; height: 200px; border-radius: 20px;
  object-fit: cover;
  border: 2px solid var(--border);
  position: relative; z-index: 1;
  transition: border-color .3s;
}
.speaker-img-wrap:hover .speaker-img { border-color: var(--cyan); }
.img-ring {
  position: absolute; inset: -8px; border-radius: 26px;
  border: 1px solid rgba(0,212,255,0.2);
  animation: ringPulse 3s infinite;
}
@keyframes ringPulse {
  0%, 100% { opacity: .3; transform: scale(1); }
  50%       { opacity: .8; transform: scale(1.02); }
}

.linkedin-btn {
  display: flex; align-items: center; gap: 8px;
  padding: 11px 20px;
  background: #0a66c2; color: #fff;
  font-family: var(--font-b); font-size: 13px; font-weight: 600;
  border-radius: 10px; text-decoration: none;
  transition: all .25s; white-space: nowrap;
}
.linkedin-btn:hover { background: #004182; transform: translateY(-2px); box-shadow: 0 8px 20px rgba(10,102,194,0.4); }

.speaker-badge {
  display: inline-block;
  font-family: var(--font-m); font-size: 11px;
  color: var(--cyan); letter-spacing: 2px; text-transform: uppercase;
  background: rgba(0,212,255,0.08);
  border: 1px solid rgba(0,212,255,0.2);
  padding: 5px 14px; border-radius: 100px;
  margin-bottom: 18px;
}
.speaker-name {
  font-family: var(--font-h); font-size: 40px; font-weight: 800;
  line-height: 1.1; letter-spacing: -1px;
  margin-bottom: 8px;
}
.speaker-title { font-family: var(--font-m); font-size: 13px; color: var(--cyan); margin-bottom: 4px; }
.speaker-org { font-size: 13px; color: var(--muted); margin-bottom: 20px; }

.speaker-bio {
  font-size: 15px; color: var(--muted); line-height: 1.8;
  margin-bottom: 28px; max-width: 520px;
}

.speaker-stats {
  display: flex; gap: 24px; margin-bottom: 24px; flex-wrap: wrap;
}
.sp-stat { text-align: center; }
.sp-num {
  font-family: var(--font-h); font-size: 28px; font-weight: 800;
  color: var(--cyan);
}
.sp-lbl { font-size: 11px; color: var(--muted); margin-top: 2px; text-transform: uppercase; letter-spacing: 1px; }

.speaker-chips { display: flex; flex-wrap: wrap; gap: 8px; }
.speaker-chips span {
  font-family: var(--font-b); font-size: 12px; font-weight: 500;
  color: var(--muted);
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--border);
  padding: 5px 14px; border-radius: 100px;
  transition: all .2s;
}
.speaker-chips span:hover { border-color: var(--cyan); color: var(--cyan); }

/* ── VERIFY ────────────────────────────────────────── */
#verify { background: var(--bg2); }

.verify-wrap { max-width: 560px; margin: 0 auto; }

.verify-box {
  position: relative;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 24px; overflow: hidden;
  transition: all .4s;
}
.vbox-glow {
  position: absolute; top: -60px; left: 50%; transform: translateX(-50%);
  width: 300px; height: 120px;
  background: radial-gradient(ellipse, rgba(0,212,255,0.12), transparent 70%);
  pointer-events: none;
}
.vbox-inner { padding: 44px 40px; text-align: center; position: relative; z-index: 1; }
.vbox-icon { font-size: 48px; margin-bottom: 12px; }
.vbox-label {
  font-family: var(--font-m); font-size: 12px;
  color: var(--muted); letter-spacing: 2px;
  text-transform: uppercase; margin-bottom: 20px;
}

.input-row { display: flex; gap: 10px; margin-bottom: 14px; }

input[type=text] {
  flex: 1; padding: 14px 18px;
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--border);
  border-radius: 10px;
  font-family: var(--font-m); font-size: 17px; font-weight: 500;
  letter-spacing: 3px; text-align: center; text-transform: uppercase;
  color: var(--text); outline: none;
  transition: border-color .2s, box-shadow .2s;
}
input[type=text]:focus {
  border-color: var(--cyan);
  box-shadow: 0 0 0 3px rgba(0,212,255,0.1);
}
input[type=text]::placeholder {
  color: #2a4a6a; letter-spacing: 2px; font-size: 14px; text-transform: uppercase;
}

button {
  padding: 14px 22px;
  background: var(--cyan); color: #000;
  font-family: var(--font-b); font-size: 14px; font-weight: 700;
  border: none; border-radius: 10px; cursor: pointer;
  transition: all .2s; white-space: nowrap;
  display: flex; align-items: center; justify-content: center;
}
button:hover { background: #00eaff; transform: translateY(-1px); box-shadow: 0 6px 20px rgba(0,212,255,0.3); }
button:active { transform: scale(0.97); }

.vbox-hint { font-size: 12px; color: var(--muted); }

/* spinner */
.spinner {
  display: inline-block; width: 16px; height: 16px;
  border: 2px solid rgba(0,0,0,0.2);
  border-top-color: #000;
  border-radius: 50%;
  animation: spin .6s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* result */
.result-emoji { font-size: 60px; margin-bottom: 12px; animation: popIn .4s cubic-bezier(0.34,1.56,0.64,1); }
@keyframes popIn {
  from { transform: scale(0); opacity: 0; }
  to   { transform: scale(1); opacity: 1; }
}
.result-title {
  font-family: var(--font-h); font-size: 24px; font-weight: 800;
  margin-bottom: 8px;
}
.result-sub { font-size: 14px; color: var(--muted); margin-bottom: 24px; line-height: 1.6; }

.result-rows {
  background: rgba(255,255,255,0.03);
  border: 1px solid var(--border);
  border-radius: 12px; overflow: hidden;
  margin-bottom: 24px; text-align: left;
}
.result-row {
  display: flex; justify-content: space-between; align-items: center;
  padding: 12px 18px; border-bottom: 1px solid var(--border);
}
.result-row:last-child { border: none; }
.r-lbl { font-family: var(--font-m); font-size: 11px; color: var(--muted); letter-spacing: 1px; text-transform: uppercase; }
.r-val { font-size: 13px; font-weight: 600; text-align: right; }

.badge-yes { color: #4ade80; }
.badge-no  { color: #f87171; }

.btn-reset {
  background: transparent; color: var(--muted);
  border: 1px solid var(--border);
  font-size: 13px; width: 100%; padding: 12px;
  border-radius: 10px; font-family: var(--font-b); font-weight: 500;
}
.btn-reset:hover { border-color: var(--cyan); color: var(--cyan); background: rgba(0,212,255,0.05); transform: none; box-shadow: none; }

/* ── FOOTER ────────────────────────────────────────── */
footer {
  background: var(--bg); border-top: 1px solid var(--border);
  padding: 40px 0; text-align: center;
}
.footer-brand {
  font-family: var(--font-m); font-size: 18px; font-weight: 500;
  margin-bottom: 8px;
}
footer p { font-size: 13px; color: var(--muted); margin-bottom: 4px; }
.footer-small { font-size: 12px; color: #2a4a6a !important; }

/* ── UTILITY ───────────────────────────────────────── */
.hidden { display: none !important; }

/* ── RESPONSIVE ────────────────────────────────────── */
@media (max-width: 768px) {
  .speaker-card { flex-direction: column; padding: 32px 24px; gap: 32px; }
  .speaker-left { width: 100%; align-items: center; }
  .speaker-name { font-size: 30px; }
  .speaker-stats { justify-content: center; }
  .event-strip { flex-direction: column; align-items: flex-start; }
  .strip-divider { width: 100%; height: 1px; }
  .vbox-inner { padding: 32px 20px; }
  .input-row { flex-direction: column; }
  button { width: 100%; }
  .nav-links { gap: 20px; }
}

.cursor {
  color: var(--cyan);
  animation: blink .7s infinite;
}
@keyframes blink {
  0%, 100% { opacity: 1; }
  50%       { opacity: 0; }
}

body.light {
  --bg:      #e8f0fc;
  --bg2:     #dce7f9;
  --bg3:     #cfdaf5;
  --surface: #d0e1f7;
  --text:    #0a1628;
  --muted:   #2a4a7f;
  --border:  rgba(0, 80, 200, 0.18);
  --cyan:    #0055cc;
  --glow:    rgba(0, 80, 200, 0.1);
}

body.light #navbar {
  background: rgba(30, 80, 180, 0.92);
  border-bottom: 1px solid rgba(0, 80, 200, 0.2);
}

body.light .nav-links a { color: #ffffff; }
body.light .nav-links a:hover { color: #a8d4ff; }
body.light .nav-logo span { color: #a8d4ff; }

body.light .hero-title  { color: #0a1628; }
body.light .hero-sub    { color: #2a4a7f; }
body.light .stat-pill   { background: #c5d8f5; color: #0a1628; border-color: rgba(0,80,200,0.2); }
body.light .hero-tag    { background: rgba(0,80,200,0.1); border-color: rgba(0,80,200,0.25); }

body.light .about-card  { background: #cfdaf5; border-color: rgba(0,80,200,0.15); }
body.light .about-card p { color: #2a4a7f; }
body.light .about-card h3 { color: #0a1628; }

body.light .event-strip { background: #cfdaf5; border-color: rgba(0,80,200,0.15); }
body.light .strip-val   { color: #0a1628; }

body.light .speaker-card { background: #cfdaf5; border-color: rgba(0,80,200,0.15); }
body.light .speaker-bio  { color: #2a4a7f; }
body.light .speaker-org  { color: #2a4a7f; }
body.light .speaker-chips span { background: #bdd0f0; color: #0a1628; }

body.light .verify-box   { background: #cfdaf5; border-color: rgba(0,80,200,0.15); }
body.light input[type=text] {
  background: #bdd0f0;
  color: #0a1628;
  border-color: rgba(0,80,200,0.25);
}
body.light input[type=text]::placeholder { color: #5a7aab; }

body.light .result-rows  { background: #bdd0f0; border-color: rgba(0,80,200,0.15); }
body.light .result-row   { border-color: rgba(0,80,200,0.1); }
body.light .r-lbl        { color: #4a6a9f; }
body.light .r-val        { color: #0a1628; }

body.light .btn-reset    { background: #bdd0f0; color: #0a1628; border-color: rgba(0,80,200,0.2); }
body.light .btn-ghost    { color: #0a1628; border-color: rgba(0,80,200,0.25); }

body.light footer { background: #dce7f9; border-color: rgba(0,80,200,0.15); }
body.light footer p { color: #2a4a7f; }
body.light .footer-brand { color: #0a1628; }

body.light #theme-btn {
  background: #1e50b4;
  border-color: rgba(0,80,200,0.3);
  color: #ffffff;
}

body.light .nav-logo span {
  color: #a8d4ff !important;
}

@media (max-width: 640px) {
  #hamburger {
    display: flex !important;
  }

  .nav-links {
    display: none;
    position: fixed;
    top: 64px; left: 0; right: 0;
    background: rgba(6, 15, 30, 0.97);
    backdrop-filter: blur(16px);
    flex-direction: column;
    padding: 24px;
    gap: 0;
    border-bottom: 1px solid var(--border);
    z-index: 89;
  }

  .nav-links.open {
    display: flex;
  }

  .nav-links a {
    padding: 16px 0;
    font-size: 16px;
    border-bottom: 1px solid var(--border);
    width: 100%;
  }

  .nav-links a:last-child {
    border-bottom: none;
  }

  /* light mode mobile menu */
  body.light .nav-links {
    background: rgba(30, 80, 180, 0.97);
  }
}

/* Desktop — single line */
.concluded-badge {
  display: inline-block;
}

/* Mobile — two lines */
@media (max-width: 640px) {
  .concluded-badge {
    display: inline-flex;
    flex-direction: column;
    align-items: center;
    border-radius: 20px !important;
    gap: 4px;
    text-align: center;
  }
  .concluded-dot {
    display: none;
  }
}

.cert-id {
  font-family: 'JetBrains Mono', monospace;
  color: var(--cyan);
}

body.light .cert-id {
  color: #0a1628; /* or any dark color you want */
}