:root, [data-theme="dark"] {
  --bg: #060709;
  --panel: rgba(18, 20, 26, 0.9);
  --card: rgba(20, 23, 31, 0.9);
  --accent: #86f0c4;
  --accent-2: #7cd8ff;
  --ink: #e9edf5;
  --muted: #9aa3b5;
  --line: rgba(255,255,255,0.08);
  --shadow: 0 24px 90px rgba(0,0,0,0.35);
  --body-bg: radial-gradient(circle at 20% 20%, rgba(134,240,196,0.08), transparent 30%), radial-gradient(circle at 80% 10%, rgba(124,216,255,0.12), transparent 28%), linear-gradient(130deg, #0b0d12 0%, #0d1018 40%, #0a0c14 100%);
}

[data-theme="light"] {
  --bg: #f5f6fa;
  --panel: rgba(255, 255, 255, 0.92);
  --card: rgba(245, 247, 252, 0.95);
  --accent: #0d9668;
  --accent-2: #2b8abf;
  --ink: #1a1d26;
  --muted: #5a6170;
  --line: rgba(0,0,0,0.1);
  --shadow: 0 24px 90px rgba(0,0,0,0.08);
  --body-bg: linear-gradient(130deg, #f0f2f8 0%, #e8ecf4 40%, #f5f6fa 100%);
}

* { box-sizing: border-box; margin: 0; padding: 0; }

body {
  font-family: 'Space Grotesk', 'Inter', system-ui, sans-serif;
  background: var(--body-bg);
  color: var(--ink);
  min-height: 100vh;
  padding: 26px 16px 48px;
  position: relative;
  overflow-x: hidden;
}

body::after {
  content: "";
  position: fixed;
  inset: 14px;
  border: 1px solid rgba(255,255,255,0.04);
  border-radius: 28px;
  pointer-events: none;
  opacity: 0.5;
}
[data-theme="light"] body::after {
  border-color: rgba(0,0,0,0.06);
}

.page-shell {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  gap: 18px;
}

.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  padding: 14px 16px;
  background: rgba(18,20,26,0.75);
  border: 1px solid var(--line);
  border-radius: 16px;
  box-shadow: var(--shadow);
  backdrop-filter: blur(12px);
  position: relative;
  z-index: 1000;
}
[data-theme="light"] .site-header {
  background: rgba(255,255,255,0.85);
}

.brand-text { display: grid; gap: 2px; }
.brand-name { font-weight: 800; letter-spacing: 0.05em; color: var(--ink); }
.brand-tagline { color: var(--muted); font-size: 0.9rem; }
.brand { text-decoration: none; }

.site-nav {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}

.nav-link {
  color: var(--muted);
  text-decoration: none;
  padding: 9px 12px;
  border-radius: 12px;
  border: 1px solid transparent;
  transition: all 0.2s ease;
  font-weight: 600;
}

.nav-link:hover {
  color: var(--ink);
  border-color: var(--line);
  background: rgba(255,255,255,0.05);
}

.nav-actions { display: flex; gap: 10px; align-items: center; }

.chip {
  padding: 8px 12px;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: rgba(255,255,255,0.05);
  color: var(--muted);
  font-weight: 700;
  text-decoration: none;
  font-size: 0.85rem;
}

a.chip:hover {
  color: var(--ink);
  border-color: rgba(255,255,255,0.12);
}

.surface {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 20px;
  padding: 26px;
  box-shadow: var(--shadow);
  position: relative;
  overflow: hidden;
}

.surface::before {
  content: "";
  position: absolute;
  inset: -40% -10% auto auto;
  height: 80%;
  width: 60%;
  background: radial-gradient(circle at 30% 30%, rgba(134,240,196,0.15), transparent 60%);
  opacity: 0.6;
  pointer-events: none;
}

.hero { position: relative; z-index: 1; }

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 12px;
  border-radius: 999px;
  border: 1px solid var(--line);
  color: var(--muted);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-size: 0.82rem;
}

h1 {
  margin: 14px 0 12px;
  font-size: clamp(2.5rem, 5vw, 3.4rem);
  letter-spacing: -0.02em;
}

.lede {
  color: var(--muted);
  font-size: 1.05rem;
  line-height: 1.7;
  max-width: 900px;
}

.meta-row { display: flex; flex-wrap: wrap; gap: 10px; margin: 16px 0 12px; }

.badge {
  padding: 8px 12px;
  border-radius: 12px;
  border: 1px solid var(--line);
  background: rgba(255,255,255,0.05);
  font-weight: 700;
  color: var(--ink);
}

.cta-row { display: flex; flex-wrap: wrap; gap: 10px; margin: 10px 0; }

.button {
  padding: 12px 16px;
  border-radius: 12px;
  border: 1px solid var(--line);
  text-decoration: none;
  font-weight: 700;
  color: var(--ink);
  transition: all 0.2s ease;
  background: rgba(255,255,255,0.05);
}

.button.primary {
  background: linear-gradient(120deg, var(--accent), var(--accent-2));
  color: #041010;
  border: none;
  box-shadow: 0 16px 40px rgba(134,240,196,0.2);
}

.button:hover { transform: translateY(-1px); border-color: rgba(255,255,255,0.12); }

.grid { display: grid; gap: 14px; margin-top: 18px; }
.grid.two { grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); }

.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 16px;
  box-shadow: 0 16px 40px rgba(0,0,0,0.25);
  display: grid;
  gap: 10px;
}

.card h3 { margin: 0; }
.card p { margin: 0; color: var(--muted); }

.list { list-style: none; padding: 0; display: grid; gap: 10px; }
.list-item { display: flex; gap: 10px; align-items: flex-start; color: var(--muted); }
.list-dot { width: 8px; height: 8px; border-radius: 999px; background: var(--accent); margin-top: 6px; flex-shrink: 0; }
.list-link { color: inherit; text-decoration: none; }
.list-link:hover { color: var(--accent); }

.proj-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; }
.proj-card {
  display: flex; flex-direction: column; gap: 3px;
  padding: 10px 12px; border-radius: 10px;
  border: 1px solid var(--line); background: rgba(255,255,255,0.02);
  text-decoration: none; transition: border-color 0.2s, background 0.2s;
}
.proj-card:hover { border-color: rgba(134,240,196,0.35); background: rgba(134,240,196,0.05); }
.proj-card strong { color: var(--ink); font-size: 0.88rem; font-weight: 700; }
.proj-card span { color: var(--muted); font-size: 0.78rem; line-height: 1.4; }
@media (max-width: 500px) { .proj-grid { grid-template-columns: 1fr; } }

/* ── Certificates page ─────────────────────────────────────────── */
.cert-stats-row {
  display: flex; gap: 20px; flex-wrap: wrap; margin-top: 20px;
}
.cert-stat {
  display: flex; flex-direction: column; gap: 2px;
  padding: 12px 20px; border-radius: 12px;
  border: 1px solid var(--line); background: rgba(255,255,255,0.02);
  min-width: 90px; text-align: center;
}
.cert-stat-num { font-size: 1.6rem; font-weight: 800; color: var(--accent); line-height: 1; }
.cert-stat-label { font-size: 0.7rem; color: var(--muted); margin-top: 2px; }

.cert-group { display: flex; flex-direction: column; gap: 14px; }
.cert-group-label {
  display: flex; align-items: center; gap: 10px;
  font-size: 0.8rem; font-weight: 700; color: var(--muted); text-transform: uppercase; letter-spacing: 0.08em;
}
.cert-group-dot { width: 10px; height: 10px; border-radius: 50%; flex-shrink: 0; }
.cert-dot-langchain { background: linear-gradient(135deg,#86f0c4,#7cd8ff); }
.cert-dot-meta { background: #1877f2; }
.cert-dot-ibm { background: #1b4fff; }
.cert-dot-cisco { background: #1ba0d7; }
.cert-dot-google { background: linear-gradient(90deg,#ea4335,#fbbc05,#34a853,#4285f4); }
.cert-dot-hubspot { background: #ff5c35; }
.cert-dot-efset { background: linear-gradient(135deg,#6c3fcf,#9b59b6); }
.cert-profile-link {
  margin-left: auto; font-size: 0.75rem; font-weight: 700;
  color: var(--accent); text-decoration: none; text-transform: none; letter-spacing: 0;
  border: 1px solid rgba(134,240,196,0.25); padding: 4px 10px; border-radius: 8px;
  background: rgba(134,240,196,0.06); transition: background 0.2s;
}
.cert-profile-link:hover { background: rgba(134,240,196,0.14); }

/* Image certificate cards — compact Coursera-style */
.cert-img-grid { display: grid; grid-template-columns: repeat(4,1fr); gap: 12px; }
.cert-img-card {
  display: flex; flex-direction: column;
  border-radius: 10px; overflow: hidden;
  border: 1px solid var(--line); background: rgba(255,255,255,0.02);
  text-decoration: none; transition: transform 0.18s, border-color 0.18s, box-shadow 0.18s;
}
.cert-img-card:hover {
  transform: translateY(-3px);
  border-color: rgba(134,240,196,0.4);
  box-shadow: 0 8px 28px rgba(0,0,0,0.3);
}
.cert-img-wrap { position: relative; aspect-ratio: 16/10; overflow: hidden; background: #0d1018; }
.cert-badge-wrap { background: #0e2040; }
.cert-badge-wrap img { object-fit: contain !important; transform: none !important; padding: 10px; }
.cert-img-wrap img {
  width: 100%; height: 100%; object-fit: cover; display: block;
  transition: transform 0.3s;
}
.cert-img-card:hover .cert-img-wrap img { transform: scale(1.04); }
.cert-img-overlay {
  position: absolute; inset: 0;
  background: rgba(6,7,9,0.7);
  display: flex; align-items: center; justify-content: center;
  opacity: 0; transition: opacity 0.18s;
  -webkit-backdrop-filter: blur(2px);
  backdrop-filter: blur(2px);
}
.cert-img-card:hover .cert-img-overlay { opacity: 1; }
.cert-img-overlay span {
  color: var(--accent); font-weight: 700; font-size: 0.78rem;
  border: 1px solid rgba(134,240,196,0.4); padding: 6px 14px;
  border-radius: 8px; background: rgba(134,240,196,0.1);
}
.cert-img-footer { padding: 10px 11px; display: flex; flex-direction: column; gap: 3px; }
.cert-img-name { font-size: 0.76rem; font-weight: 700; color: var(--ink); line-height: 1.3; }
.cert-img-issuer { font-size: 0.65rem; color: var(--muted); margin-top: 1px; }

/* Styled (no-image) certificate cards */
.cert-styled-card {
  display: flex; align-items: center; gap: 14px;
  padding: 14px 16px; border-radius: 14px;
  border: 1px solid var(--line); background: rgba(255,255,255,0.02);
  text-decoration: none; transition: border-color 0.2s, background 0.2s;
}
.cert-styled-card:hover { border-color: rgba(134,240,196,0.3); background: rgba(134,240,196,0.03); }
.cert-styled-logo { flex-shrink: 0; width: 40px; height: 40px; display: flex; align-items: center; justify-content: center; }
.cert-styled-body { flex: 1; min-width: 0; display: flex; flex-direction: column; gap: 3px; }
.cert-styled-name { font-size: 0.83rem; font-weight: 700; color: var(--ink); line-height: 1.3; }
.cert-styled-issuer { font-size: 0.7rem; color: var(--muted); }
.cert-styled-verify {
  flex-shrink: 0; font-size: 0.75rem; font-weight: 700;
  color: var(--accent); padding: 5px 12px; border-radius: 8px;
  border: 1px solid rgba(134,240,196,0.2); background: rgba(134,240,196,0.06);
  white-space: nowrap;
}
/* Issuer accent borders on hover */
.cert-styled-langchain:hover { border-color: rgba(134,240,196,0.4); }
.cert-styled-meta:hover { border-color: rgba(24,119,242,0.4); }
.cert-styled-google:hover { border-color: rgba(66,133,244,0.4); }
.cert-styled-hubspot:hover { border-color: rgba(255,92,53,0.4); }
.cert-styled-cisco:hover { border-color: rgba(27,160,215,0.4); }

/* Certificates homepage CTA button */
.button.certs-cta {
  display: inline-flex; align-items: center; gap: 8px;
  background: linear-gradient(135deg, #f9c74f, #f3722c);
  color: #1a0800; font-weight: 800; font-size: 0.95rem;
  padding: 10px 22px; border-radius: 12px;
  text-decoration: none; border: none;
  box-shadow: 0 0 20px rgba(249,199,79,0.25), 0 0 40px rgba(249,199,79,0.10);
  transition: transform 0.2s, box-shadow 0.2s, opacity 0.2s;
  position: relative; overflow: hidden;
}
.button.certs-cta::before {
  content: '';
  position: absolute; inset: 0;
  background: linear-gradient(135deg, rgba(255,255,255,0.15), transparent);
  pointer-events: none;
}
.button.certs-cta:hover {
  transform: translateY(-2px);
  box-shadow: 0 0 28px rgba(249,199,79,0.45), 0 0 60px rgba(249,199,79,0.15);
  opacity: 0.95;
}
.button.certs-cta .certs-cta-icon { font-size: 1.1rem; }

@media (max-width: 900px) { .cert-img-grid { grid-template-columns: repeat(2,1fr); } }
@media (max-width: 600px) {
  .cert-img-grid { grid-template-columns: 1fr; }
  .cert-stats-row { gap: 10px; }
  .cert-stat { padding: 10px 14px; min-width: 72px; }
}

.notice {
  padding: 14px;
  border-radius: 12px;
  border: 1px dashed var(--line);
  background: rgba(255,255,255,0.03);
  color: var(--ink);
  font-family: 'JetBrains Mono', 'Courier New', monospace;
  line-height: 1.6;
}

code { font-family: 'JetBrains Mono', 'Courier New', monospace; }

.footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
  color: var(--muted);
  border: 1px solid var(--line);
  background: rgba(18,20,26,0.85);
  border-radius: 14px;
  padding: 12px 14px;
  box-shadow: var(--shadow);
}
[data-theme="light"] .footer {
  background: rgba(255,255,255,0.85);
}

.form-card { background: var(--panel); border: 1px solid var(--line); border-radius: 16px; padding: 22px; box-shadow: var(--shadow); display: grid; gap: 14px; max-width: 520px; margin: 0 auto; }
.form-card h1 { font-size: 1.8rem; }
.subtitle { color: var(--muted); }
.form-group { display: grid; gap: 6px; }
.form-card label { font-weight: 700; letter-spacing: 0.05em; font-size: 0.85rem; color: var(--muted); text-transform: uppercase; }
.form-card input { width: 100%; padding: 12px 14px; border: 1px solid var(--line); border-radius: 10px; font-size: 1rem; background: rgba(255,255,255,0.04); color: var(--ink); }
.form-card input:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px rgba(134,240,196,0.16); }
.primary-btn { display: inline-flex; justify-content: center; padding: 14px; border-radius: 12px; border: none; background: linear-gradient(120deg, var(--accent), var(--accent-2)); color: #041010; font-weight: 800; letter-spacing: 0.08em; cursor: pointer; }
.primary-btn:hover { filter: brightness(0.96); }
.back-link { text-align: center; color: var(--muted); }
.back-link a { color: var(--ink); font-weight: 700; }

.error-wrap { text-align: center; max-width: 600px; margin: 0 auto; background: var(--panel); border: 1px solid var(--line); border-radius: 16px; padding: 32px 24px; box-shadow: var(--shadow); }
.error-code { font-size: 4rem; font-weight: 800; color: var(--accent); }
.error-wrap p { color: var(--muted); margin: 12px 0 18px; }
.error-wrap .btn { background: var(--accent); color: #041010; }

@media (max-width: 780px) {
  body { padding: 18px 12px 32px; }
  .site-header { flex-direction: column; align-items: flex-start; }
  .cta-row .button, .nav-link { width: 100%; text-align: center; justify-content: center; }
}

/* Light mode adjustments */
[data-theme="light"] .surface::before { background: radial-gradient(circle at 30% 30%, rgba(13,150,104,0.08), transparent 60%); }
[data-theme="light"] .button.primary { color: #fff; box-shadow: 0 16px 40px rgba(13,150,104,0.15); }
[data-theme="light"] .nav-link:hover { background: rgba(0,0,0,0.05); }
[data-theme="light"] .chip { background: rgba(0,0,0,0.04); }
[data-theme="light"] a.chip:hover { border-color: rgba(0,0,0,0.15); }
[data-theme="light"] .badge { background: rgba(0,0,0,0.04); }
[data-theme="light"] .button { background: rgba(0,0,0,0.04); }
[data-theme="light"] .button:hover { border-color: rgba(0,0,0,0.15); }
[data-theme="light"] .form-card input { background: rgba(0,0,0,0.03); }
[data-theme="light"] .popup-overlay { background: rgba(0,0,0,0.4); }

/* Icon button (theme & lang toggles) */
.icon-btn {
  display: inline-flex; align-items: center; gap: 4px;
  padding: 8px 10px; border-radius: 10px; border: 1px solid var(--line);
  background: rgba(255,255,255,0.05); color: var(--muted);
  cursor: pointer; font-weight: 700; font-size: 0.82rem; font-family: inherit;
  transition: all 0.2s ease;
}
.icon-btn:hover { color: var(--ink); border-color: rgba(255,255,255,0.12); background: rgba(255,255,255,0.08); }
[data-theme="light"] .icon-btn { background: rgba(0,0,0,0.04); }
[data-theme="light"] .icon-btn:hover { background: rgba(0,0,0,0.08); border-color: rgba(0,0,0,0.15); }

/* Language dropdown */
.lang-dropdown { position: relative; z-index: 200; }
.lang-menu {
  display: none; position: absolute; top: calc(100% + 8px); right: 0;
  background: #12141a; border: 1px solid rgba(255,255,255,0.12); border-radius: 12px;
  padding: 6px 0; min-width: 170px; box-shadow: 0 12px 40px rgba(0,0,0,0.5); z-index: 201;
  -webkit-backdrop-filter: blur(20px); backdrop-filter: blur(20px);
  overflow: hidden;
}
.lang-menu.show { display: block; }
.lang-option {
  display: flex; align-items: center; gap: 8px;
  width: 100%; padding: 10px 16px; border: none;
  background: none; color: var(--muted); font-family: inherit;
  font-size: 0.9rem; cursor: pointer; text-align: left;
  transition: all 0.15s ease; white-space: nowrap;
}
.lang-option:hover { background: rgba(134,240,196,0.12); color: var(--ink); }
.lang-option.active { color: var(--accent); font-weight: 600; background: rgba(134,240,196,0.06); }
[data-theme="light"] .lang-menu { background: #fff; border-color: rgba(0,0,0,0.12); box-shadow: 0 12px 40px rgba(0,0,0,0.12); }
[data-theme="light"] .lang-option:hover { background: rgba(13,150,104,0.08); }

/* RTL support */
[dir="rtl"] .site-nav { direction: ltr; }
[dir="rtl"] .brand-text { text-align: right; }
[dir="rtl"] .popup-close { right: auto; left: 14px; }
[dir="rtl"] .card, [dir="rtl"] .hero, [dir="rtl"] .lede { text-align: right; }
[dir="rtl"] .meta-row, [dir="rtl"] .cta-row { justify-content: flex-end; }
[dir="rtl"] .list-dot { margin-right: 0; margin-left: 10px; }
[dir="rtl"] .lang-menu { right: auto; left: 0; }
[dir="rtl"] .lang-option { text-align: right; }

/* Welcome popup */
.popup-overlay {
  position: fixed; inset: 0; z-index: 9999;
  background: rgba(0,0,0,0.6); -webkit-backdrop-filter: blur(6px); backdrop-filter: blur(6px);
  display: flex; align-items: center; justify-content: center;
  padding: 20px; animation: fadeIn 0.3s ease;
}
.popup-card {
  background: var(--panel); border: 1px solid var(--line);
  border-radius: 20px; padding: 28px 24px; max-width: 480px; width: 100%;
  box-shadow: var(--shadow); position: relative; text-align: center;
}
.popup-card h2 { margin: 0 0 10px; font-size: 1.6rem; }
.popup-card p { color: var(--muted); line-height: 1.6; }
.popup-close {
  position: absolute; top: 12px; right: 14px;
  background: none; border: none; color: var(--muted); font-size: 1.6rem;
  cursor: pointer; line-height: 1; padding: 4px;
}
.popup-close:hover { color: var(--ink); }
@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }

/* ========================================
   AI Chat Popup (global)
   ======================================== */
.chat-overlay {
  position: fixed; inset: 0; background: rgba(0,0,0,0.6);
  -webkit-backdrop-filter: blur(4px); backdrop-filter: blur(4px); z-index: 9999;
  display: flex; justify-content: center; align-items: center;
  padding: 20px; transition: opacity 0.3s;
}
.chat-overlay.hidden { display: none; }
.chat-popup {
  background: var(--panel); border: 1px solid var(--line);
  border-radius: 20px; width: 100%; max-width: 440px; max-height: 80vh;
  display: grid; grid-template-rows: auto 1fr auto auto;
  box-shadow: 0 32px 80px rgba(0,0,0,0.5); overflow: hidden; position: relative;
}
.chat-close {
  position: absolute; top: 12px; right: 14px;
  background: none; border: none; color: var(--muted);
  font-size: 1.6rem; cursor: pointer; z-index: 1;
}
.chat-header {
  display: flex; align-items: center; gap: 12px;
  padding: 18px 20px 14px; border-bottom: 1px solid var(--line);
}
.chat-avatar { display: flex; align-items: center; justify-content: center; }
.chat-header h3 { margin: 0; font-size: 1.1rem; }
.chat-sub { margin: 0; color: var(--muted); font-size: 0.82rem; }
.chat-body {
  padding: 16px 20px; overflow-y: auto;
  display: flex; flex-direction: column; gap: 12px;
  min-height: 200px; max-height: 320px;
}
.chat-msg {
  padding: 10px 14px; border-radius: 12px;
  font-size: 0.92rem; line-height: 1.5; max-width: 85%;
}
.chat-msg.bot {
  background: rgba(134,240,196,0.1); border: 1px solid rgba(134,240,196,0.15);
  align-self: flex-start;
}
.chat-msg.user {
  background: rgba(124,216,255,0.1); border: 1px solid rgba(124,216,255,0.15);
  align-self: flex-end;
}
.chat-msg p { margin: 0; }
/* Typing indicator dots */
.typing-indicator .dot {
  display: inline-block; width: 8px; height: 8px;
  border-radius: 50%; background: var(--accent); opacity: 0.4;
  margin: 0 2px; animation: typingBounce 1.4s infinite ease-in-out both;
}
.typing-indicator .dot:nth-child(1) { animation-delay: 0s; }
.typing-indicator .dot:nth-child(2) { animation-delay: 0.2s; }
.typing-indicator .dot:nth-child(3) { animation-delay: 0.4s; }
@keyframes typingBounce {
  0%, 80%, 100% { transform: scale(0.6); opacity: 0.4; }
  40% { transform: scale(1); opacity: 1; }
}
.chat-input-wrap {
  display: flex; gap: 8px; padding: 12px 16px;
  border-top: 1px solid var(--line);
}
.chat-input {
  flex: 1; padding: 10px 14px;
  border: 1px solid var(--line); border-radius: 10px;
  background: rgba(255,255,255,0.04); color: var(--ink);
  font-size: 0.92rem; font-family: inherit;
}
.chat-input:focus { outline: none; border-color: var(--accent); }
.chat-send {
  padding: 10px 14px; border-radius: 10px; border: none;
  background: linear-gradient(120deg, var(--accent), var(--accent-2));
  color: #041010; font-weight: 800; cursor: pointer;
}
.subscribe-section {
  padding: 14px 20px 18px; border-top: 1px solid var(--line);
  background: rgba(255,255,255,0.02);
}
.subscribe-text { margin: 0 0 8px; font-size: 0.82rem; color: var(--muted); }
.subscribe-form { display: flex; gap: 8px; }
.subscribe-input {
  flex: 1; padding: 8px 12px;
  border: 1px solid var(--line); border-radius: 8px;
  background: rgba(255,255,255,0.04); color: var(--ink);
  font-size: 0.85rem; font-family: inherit;
}
.subscribe-input:focus { outline: none; border-color: var(--accent); }
.subscribe-btn {
  padding: 8px 16px; border-radius: 8px; border: none;
  background: var(--accent); color: #041010;
  font-weight: 700; font-size: 0.82rem; cursor: pointer;
}
.chat-fab {
  position: fixed; bottom: 24px; right: 24px; z-index: 9998;
  width: 60px; height: 60px; border-radius: 50%; border: none;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: #041010; font-size: 1.5rem; cursor: pointer;
  box-shadow: 0 8px 32px rgba(134,240,196,0.3);
  display: flex; align-items: center; justify-content: center;
  transition: transform 0.2s;
}
.chat-fab:hover { transform: scale(1.08); }
.fab-icon { position: relative; z-index: 1; }
.fab-pulse {
  position: absolute; inset: -4px; border-radius: 50%;
  background: rgba(134,240,196,0.3);
  animation: fabPulse 2s ease-in-out infinite;
}
@keyframes fabPulse {
  0%, 100% { transform: scale(1); opacity: 0.5; }
  50% { transform: scale(1.2); opacity: 0; }
}
@media (max-width: 780px) {
  .chat-popup { max-height: 90vh; }
  .chat-fab { bottom: 16px; right: 16px; width: 52px; height: 52px; }
}

/* ── Section labels & headers ──────────────────────────────────── */
.section-label {
  font-size: 0.75rem; font-weight: 700; text-transform: uppercase;
  letter-spacing: 0.1em; color: var(--muted);
}
.section-header {
  display: flex; align-items: center; justify-content: space-between; gap: 10px;
}

/* ── Layout spacing & utility helpers ───────────────────────────── */
.lede-sub { margin-top: 8px; }
.expertise-section { margin-top: 28px; }
.expertise-section .expertise-grid { margin-top: 12px; }
.expertise-card strong { color: var(--ink); }
.feat-projects { margin-top: 18px; }
.feat-projects .proj-grid-3 { margin-top: 12px; }
.stack-section { margin-top: 14px; }
.stack-section .stack-groups { margin-top: 14px; }
.button.sm { font-size: 0.82rem; padding: 6px 14px; }

/* Spacing utilities used across all pages */
.grid-top { margin-top: 28px; }
.card-mt { margin-top: 18px; }
.cta-mt { margin-top: 22px; }
.meta-row-sm { margin-top: 8px; }

/* SVG icons inside card headings */
.card-h3-icon { vertical-align: -3px; margin-right: 6px; }

/* ── Expertise cards (3-col grid with accent top bar) ──────────── */
.expertise-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 14px;
}
.expertise-card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 20px;
  display: grid;
  gap: 10px;
  position: relative;
  overflow: hidden;
  box-shadow: 0 8px 32px rgba(0,0,0,0.2);
  transition: transform 0.2s, border-color 0.2s;
}
.expertise-card:hover { transform: translateY(-3px); border-color: rgba(134,240,196,0.28); }
.expertise-card.alt:hover { border-color: rgba(124,216,255,0.28); }
.expertise-card::before {
  content: "";
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  border-radius: 16px 16px 0 0;
}
.expertise-card.alt::before { background: linear-gradient(90deg, var(--accent-2), var(--accent)); }
.expertise-icon {
  width: 38px; height: 38px; border-radius: 10px;
  background: rgba(134,240,196,0.08); border: 1px solid rgba(134,240,196,0.18);
  display: flex; align-items: center; justify-content: center;
}
.expertise-icon.blue {
  background: rgba(124,216,255,0.08); border-color: rgba(124,216,255,0.18);
}
.expertise-card h3 { font-size: 1rem; margin: 0; }
.expertise-card p { font-size: 0.875rem; color: var(--muted); line-height: 1.65; margin: 0; }

/* ── Project cards — 3-col grid with category tag ─────────────── */
.proj-grid-3 {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 10px;
}
.proj-card-3 {
  display: flex; flex-direction: column; gap: 5px;
  padding: 14px 16px; border-radius: 12px;
  border: 1px solid var(--line); background: rgba(255,255,255,0.02);
  text-decoration: none;
  transition: border-color 0.2s, background 0.2s, transform 0.18s;
}
.proj-card-3:hover {
  border-color: rgba(134,240,196,0.38);
  background: rgba(134,240,196,0.05);
  transform: translateY(-2px);
}
.proj-card-3-tag {
  font-size: 0.68rem; font-weight: 700; text-transform: uppercase;
  letter-spacing: 0.06em; color: var(--accent);
}
.proj-card-3 strong { color: var(--ink); font-size: 0.9rem; font-weight: 700; }
.proj-card-3 span { color: var(--muted); font-size: 0.79rem; line-height: 1.45; }

/* ── Tech stack — categorised groups ──────────────────────────── */
.stack-groups {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 12px;
}
.stack-group {
  background: rgba(255,255,255,0.02);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 14px 16px;
  display: grid;
  gap: 10px;
}
.stack-group-label {
  font-size: 0.7rem; font-weight: 700; text-transform: uppercase;
  letter-spacing: 0.09em; color: var(--accent);
}
.stack-chips { display: flex; flex-wrap: wrap; gap: 6px; }
.stack-chip {
  padding: 4px 10px; border-radius: 8px;
  border: 1px solid var(--line); background: rgba(255,255,255,0.04);
  font-size: 0.77rem; font-weight: 600; color: var(--muted);
}

/* ── Portfolio project category tag ───────────────────────────── */
.proj-cat-tag {
  display: inline-flex; align-items: center;
  font-size: 0.68rem; font-weight: 700; text-transform: uppercase;
  letter-spacing: 0.07em; color: var(--accent-2);
  margin-bottom: 2px;
}

/* ── About — hero stat row ────────────────────────────────────── */
.about-stats { display: flex; flex-wrap: wrap; gap: 20px; margin-top: 20px; }
.about-stat { display: flex; flex-direction: column; gap: 2px; }
.about-stat-num { font-size: 1.5rem; font-weight: 800; color: var(--accent); line-height: 1; }
.about-stat-label { font-size: 0.72rem; font-weight: 600; color: var(--muted); text-transform: uppercase; letter-spacing: 0.07em; }

/* ── Experience — company card ────────────────────────────────── */
.company-card {
  display: flex; align-items: center; gap: 16px;
  padding: 20px; background: var(--card);
  border: 1px solid var(--line); border-radius: 16px;
  position: relative;
}
.company-badge-current {
  position: absolute; top: 14px; right: 14px;
  padding: 4px 10px; border-radius: 8px;
  background: rgba(134,240,196,0.12); border: 1px solid rgba(134,240,196,0.3);
  font-size: 0.7rem; font-weight: 700; color: var(--accent);
  text-transform: uppercase; letter-spacing: 0.06em;
}
.company-logo {
  width: 48px; height: 48px; border-radius: 12px;
  background: rgba(255,255,255,0.05); border: 1px solid var(--line);
  display: flex; align-items: center; justify-content: center;
  font-weight: 800; font-size: 1.1rem; color: var(--ink); flex-shrink: 0;
}
.company-info { display: grid; gap: 3px; }
.company-name { font-weight: 700; color: var(--ink); font-size: 1rem; }
.company-role { color: var(--muted); font-size: 0.88rem; }

/* ── Compact cert mini-cards grid ────────────────────────────── */
.cert-mini-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(190px, 1fr));
  gap: 8px;
}
.cert-mini-card {
  display: flex; flex-direction: column; gap: 4px;
  padding: 12px 14px; border-radius: 10px;
  border: 1px solid var(--line); background: rgba(255,255,255,0.02);
  text-decoration: none; transition: border-color 0.2s, background 0.2s;
}
.cert-mini-card:hover {
  border-color: rgba(134,240,196,0.3);
  background: rgba(134,240,196,0.04);
}
.cert-mini-issuer {
  font-size: 0.63rem; font-weight: 700; text-transform: uppercase;
  letter-spacing: 0.07em;
}
.cert-mini-name { font-size: 0.79rem; font-weight: 600; color: var(--ink); line-height: 1.3; }
.cert-mini-date { font-size: 0.67rem; color: var(--muted); }
.cert-issuer-cisco   { color: #1ba0d7; }
.cert-issuer-langchain { color: var(--accent); }
.cert-issuer-meta    { color: #1877f2; }
.cert-issuer-ibm     { color: #4f88ff; }
.cert-issuer-google  { color: #4285f4; }
.cert-issuer-hubspot { color: #ff5c35; }
.cert-issuer-efset   { color: #9b59b6; }

/* ── Language cards ──────────────────────────────────────────── */
.lang-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
  gap: 10px;
}
.lang-card {
  display: flex; flex-direction: column; align-items: center; gap: 6px;
  padding: 16px 12px; border-radius: 12px;
  border: 1px solid var(--line); background: rgba(255,255,255,0.02);
  text-align: center;
}
.lang-flag { font-size: 1.8rem; }
.lang-name { font-weight: 700; color: var(--ink); font-size: 0.9rem; }
.lang-level { font-size: 0.71rem; color: var(--muted); }

/* ── Utility: card inner body spacing ────────────────────────── */
.section-body { margin-top: 14px; }
.section-header .section-label { margin-left: 8px; }
.btn-nowrap { white-space: nowrap; }

/* Light mode overrides for new components */
[data-theme="light"] .expertise-card { box-shadow: 0 4px 20px rgba(0,0,0,0.07); }
[data-theme="light"] .stack-group { background: rgba(0,0,0,0.02); }
[data-theme="light"] .stack-chip { background: rgba(0,0,0,0.04); }
[data-theme="light"] .proj-card-3 { background: rgba(0,0,0,0.02); }
[data-theme="light"] .cert-mini-card { background: rgba(0,0,0,0.02); }
[data-theme="light"] .lang-card { background: rgba(0,0,0,0.02); }
[data-theme="light"] .company-logo { background: rgba(0,0,0,0.04); }

@media (max-width: 640px) {
  .expertise-grid { grid-template-columns: 1fr; }
  .proj-grid-3 { grid-template-columns: 1fr 1fr; }
  .stack-groups { grid-template-columns: 1fr; }
  .cert-mini-grid { grid-template-columns: 1fr 1fr; }
  .lang-grid { grid-template-columns: repeat(2, 1fr); }
  .about-stats { gap: 14px; }
}
@media (max-width: 400px) {
  .proj-grid-3 { grid-template-columns: 1fr; }
  .cert-mini-grid { grid-template-columns: 1fr; }
}