/* ==========================================================================
   suhairiahmad.com — shared design system
   Dark premium: midnight navy / cyan. IBM Plex Mono (code/labels) + Plus
   Jakarta Sans (body/headings). Theme via [data-theme], lang via [data-lang].
   ========================================================================== */

:root {
  --font-body: 'Plus Jakarta Sans', system-ui, -apple-system, sans-serif;
  --font-mono: 'IBM Plex Mono', ui-monospace, monospace;

  /* Dark (default) palette */
  --bg: #05080f;
  --bg-elevated: #0b111e;
  --bg-card: #0e1626;
  --bg-card-hover: #121d31;
  --border: #1b2740;
  --border-soft: #141d30;
  --text: #e7edf7;
  --text-dim: #9aa8c2;
  --text-faint: #64729096;
  --accent: #22d3ee;
  --accent-soft: #22d3ee22;
  --accent-strong: #67e8f9;
  --gold: #d4af37;
  --success: #34d399;
  --shadow: 0 20px 60px -20px rgba(0,0,0,0.6);
}

:root[data-theme="light"] {
  --bg: #f6f8fc;
  --bg-elevated: #ffffff;
  --bg-card: #ffffff;
  --bg-card-hover: #eef2f9;
  --border: #dde4f0;
  --border-soft: #e7ecf5;
  --text: #0f1729;
  --text-dim: #4b5872;
  --text-faint: #8592aa;
  --accent: #0891b2;
  --accent-soft: #0891b21a;
  --accent-strong: #0e7490;
  --gold: #a6762a;
  --success: #059669;
  --shadow: 0 20px 50px -25px rgba(15,23,41,0.25);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  transition: background .25s ease, color .25s ease;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
.mono { font-family: var(--font-mono); }

.wrap {
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ---------- language toggle ---------- */
[data-lang="ms"] [data-en],
[data-lang="en"] [data-ms] { display: none !important; }

/* ---------- header / nav ---------- */
#site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: transparent;
  border-bottom: none;
  padding: 14px 20px 0;
  pointer-events: none;
  transition: padding .3s ease;
}
#site-header .nav-inner,
#site-header #mobile-nav {
  pointer-events: auto;
}
#site-header.scrolled { padding-top: 8px; }

/* floating capsule "dock" nav */
.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 26px;
  max-width: 1280px;
  margin: 0 auto;
  padding: 14px 14px 14px 28px;
  border-radius: 999px;
  background: color-mix(in srgb, var(--bg-elevated) 78%, transparent);
  backdrop-filter: blur(18px) saturate(140%);
  -webkit-backdrop-filter: blur(18px) saturate(140%);
  border: 1px solid var(--border-soft);
  box-shadow: 0 1px 0 0 rgba(255,255,255,0.02) inset, 0 12px 32px -16px rgba(0,0,0,0.5);
  transition: box-shadow .3s ease, border-color .3s ease;
}
#site-header.scrolled .nav-inner {
  border-color: var(--border);
  box-shadow: 0 1px 0 0 rgba(255,255,255,0.03) inset, 0 16px 40px -14px rgba(0,0,0,0.6);
}

.brand {
  font-family: var(--font-mono);
  font-weight: 800;
  font-size: 1.3rem;
  letter-spacing: -0.01em;
  text-transform: lowercase;
  display: flex;
  align-items: center;
  gap: 13px;
  padding-right: 10px;
  color: var(--text);
}
.brand .dot {
  color: var(--accent);
  font-weight: 800;
}
.brand .pulse {
  width: 12px; height: 12px;
  border-radius: 4px;
  background: var(--accent);
  box-shadow: 0 0 0 0 var(--accent-soft);
  animation: brand-pulse 2.4s ease-in-out infinite;
  flex-shrink: 0;
  transform: rotate(45deg);
}
@keyframes brand-pulse {
  0%, 100% { box-shadow: 0 0 0 0 color-mix(in srgb, var(--accent) 55%, transparent); }
  50% { box-shadow: 0 0 0 9px transparent; }
}
.brand:hover { color: var(--accent-strong); }
.brand:hover .pulse { background: var(--accent-strong); }

.navlinks-main {
  display: flex;
  gap: 2px;
  align-items: center;
  background: color-mix(in srgb, var(--bg) 35%, transparent);
  border-radius: 999px;
  padding: 6px;
}
.navlinks-main a {
  position: relative;
  font-size: .98rem;
  color: var(--text-dim);
  font-weight: 500;
  white-space: nowrap;
  padding: 11px 20px;
  border-radius: 999px;
  transition: color .2s ease, background .2s ease;
}
.navlinks-main a:hover { color: var(--text); background: color-mix(in srgb, var(--text) 6%, transparent); }
.navlinks-main a.active {
  color: var(--bg);
  background: var(--accent);
  font-weight: 600;
  box-shadow: 0 4px 16px -4px var(--accent-soft);
}
:root[data-theme="light"] .navlinks-main a.active { color: #fff; }

.nav-controls { display: flex; align-items: center; gap: 8px; }
.nav-toggle-btn {
  font-family: var(--font-mono);
  font-size: .85rem;
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text-dim);
  padding: 11px 16px;
  border-radius: 999px;
  cursor: pointer;
  transition: all .18s ease;
}
.nav-toggle-btn:hover { border-color: var(--accent); color: var(--accent); background: var(--accent-soft); }
.nav-burger {
  display: none;
  background: transparent;
  border: 1px solid var(--border);
  border-radius: 999px;
  color: var(--text);
  width: 46px; height: 46px;
  cursor: pointer;
  font-size: 1.3rem;
  align-items: center;
  justify-content: center;
}
#mobile-nav {
  display: none;
  flex-direction: column;
  max-width: 1280px;
  margin: 10px auto 0;
  padding: 12px 20px;
  border-radius: 22px;
  background: color-mix(in srgb, var(--bg-elevated) 92%, transparent);
  backdrop-filter: blur(18px);
  border: 1px solid var(--border-soft);
}
#mobile-nav a {
  padding: 15px 6px;
  color: var(--text-dim);
  border-bottom: 1px solid var(--border-soft);
  font-size: 1.05rem;
  border-radius: 8px;
}
#mobile-nav a.active { color: var(--accent); }
#mobile-nav a:last-child { border-bottom: none; }
#mobile-nav.open { display: flex; }

@media (max-width: 860px) {
  .navlinks-main { display: none; }
  .nav-burger { display: inline-flex; }
}

/* ---------- footer ---------- */
#site-footer {
  border-top: 1px solid var(--border-soft);
  margin-top: 100px;
  padding: 40px 24px 32px;
  color: var(--text-faint);
  font-size: .85rem;
}
.footer-inner {
  max-width: 1120px;
  margin: 0 auto;
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  justify-content: space-between;
  align-items: center;
}
.footer-links { display: flex; gap: 20px; }
.footer-links a { color: var(--text-dim); }
.footer-links a:hover { color: var(--accent); }

/* ---------- generic section rhythm (pattern from EngiLink-POLIMAS.html) ---------- */
.section { padding: 90px 0; }
.section-header {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-bottom: 40px;
}
.section-label {
  font-family: var(--font-mono);
  font-size: .78rem;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--accent);
}
.section-title {
  font-size: clamp(1.6rem, 3vw, 2.4rem);
  font-weight: 700;
  letter-spacing: -0.01em;
  margin: 0;
}
.section-sub { color: var(--text-dim); max-width: 640px; margin: 0; }
.section-divider {
  height: 1px;
  width: 100%;
  background: linear-gradient(90deg, var(--accent) 0%, transparent 60%);
  opacity: .5;
  margin: 18px 0 0;
}

/* ---------- buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 22px;
  border-radius: 10px;
  font-weight: 600;
  font-size: .92rem;
  cursor: pointer;
  border: 1px solid transparent;
  transition: transform .15s ease, box-shadow .15s ease, background .15s ease;
}
.btn:hover { transform: translateY(-1px); }
.btn-primary { background: var(--accent); color: #04141a; }
.btn-primary:hover { box-shadow: 0 10px 30px -10px var(--accent-soft); }
.btn-outline { background: transparent; border-color: var(--border); color: var(--text); }
.btn-outline:hover { border-color: var(--accent); color: var(--accent); }
.btn-whatsapp { background: #25D366; color: #06210f; }
.btn-email { background: var(--bg-card); border-color: var(--border); color: var(--text); }
.btn-whatsapp:hover, .btn-email:hover { box-shadow: var(--shadow); }

/* ---------- cards ---------- */
.card {
  display: block;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 26px;
  transition: border-color .2s ease, transform .2s ease, background .2s ease;
}
.card:hover { border-color: var(--accent); background: var(--bg-card-hover); transform: translateY(-3px); }
.card:has(form):hover { transform: none; border-color: var(--border); background: var(--bg-card); }

.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-mono);
  font-size: .74rem;
  letter-spacing: .04em;
  padding: 5px 10px;
  border-radius: 999px;
  border: 1px solid var(--border);
  color: var(--text-dim);
}
.badge.live { color: var(--success); border-color: var(--success); }
.badge-dot { width: 6px; height: 6px; border-radius: 50%; background: currentColor; }

.pill {
  display: inline-block;
  padding: 8px 16px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: var(--bg-card);
  font-size: .85rem;
  color: var(--text-dim);
}

/* ---------- hero ---------- */
.hero {
  padding: 60px 0 80px;
  position: relative;
  overflow: hidden;
}
.hero::before {
  content: '';
  position: absolute;
  inset: -20% -10% auto -10%;
  height: 500px;
  background: radial-gradient(circle at 30% 30%, var(--accent-soft), transparent 65%);
  pointer-events: none;
}
.hero-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 48px;
  align-items: center;
  position: relative;
}
@media (max-width: 800px) {
  .hero-grid { grid-template-columns: 1fr; }
  .hero-photo { order: -1; max-width: 220px; margin: 0 auto; }
}
.hero-eyebrow {
  font-family: var(--font-mono);
  color: var(--accent);
  font-size: .85rem;
  letter-spacing: .1em;
  text-transform: uppercase;
  margin-bottom: 14px;
}
.hero h1 {
  font-size: clamp(2.2rem, 5vw, 3.4rem);
  line-height: 1.1;
  margin: 0 0 18px;
  letter-spacing: -0.02em;
}
.hero p.lead { color: var(--text-dim); font-size: 1.1rem; max-width: 540px; text-align: justify; text-justify: inter-word; }
.hero-photo {
  position: relative;
}
.hero-photo::before {
  content: '';
  position: absolute;
  inset: -15%;
  background: radial-gradient(circle at 50% 35%, var(--accent-soft), transparent 70%);
  filter: blur(30px);
  z-index: 0;
  pointer-events: none;
}
.hero-photo img {
  position: relative;
  z-index: 1;
  width: 100%;
  -webkit-mask-image: linear-gradient(to bottom, #000 78%, transparent 100%),
                       linear-gradient(to right, transparent 0%, #000 8%, #000 92%, transparent 100%);
  -webkit-mask-composite: source-in;
  mask-image: linear-gradient(to bottom, #000 78%, transparent 100%),
              linear-gradient(to right, transparent 0%, #000 8%, #000 92%, transparent 100%);
  mask-composite: intersect;
  animation: photo-drift 7s ease-in-out infinite;
}
@keyframes photo-drift {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-10px); }
}
@media (prefers-reduced-motion: reduce) {
  .hero-photo img { animation: none; }
}
.hero-cta { display: flex; gap: 14px; margin-top: 30px; flex-wrap: wrap; }

/* ---------- grids ---------- */
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 22px; }
@media (max-width: 860px) { .grid-3, .grid-2 { grid-template-columns: 1fr; } }

/* ---------- CV / About tabs (pattern from EngiLink-POLIMAS.html) ---------- */
.navlinks {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  position: sticky;
  top: 74px;
  background: var(--bg);
  padding: 14px 0;
  z-index: 10;
  border-bottom: 1px solid var(--border-soft);
  margin-bottom: 30px;
}
.navlink {
  font-family: var(--font-mono);
  font-size: .8rem;
  padding: 8px 14px;
  border-radius: 8px;
  border: 1px solid var(--border);
  color: var(--text-dim);
}
.navlink:hover, .navlink.active { color: var(--accent); border-color: var(--accent); }
.cv-section { padding: 40px 0; border-bottom: 1px solid var(--border-soft); scroll-margin-top: 130px; }
.cv-item { display: grid; grid-template-columns: 190px 1fr; gap: 20px; padding: 14px 0; border-bottom: 1px dashed var(--border-soft); }
.cv-item:last-child { border-bottom: none; }
.cv-date { font-family: var(--font-mono); font-size: .82rem; color: var(--accent); }
.cv-role { font-weight: 700; }
.cv-org { color: var(--text-dim); font-size: .92rem; }
.cv-detail { color: var(--text-dim); font-size: .9rem; margin-top: 4px; }
@media (max-width: 700px) { .cv-item { grid-template-columns: 1fr; gap: 4px; } }

/* ---------- blog ---------- */
.blog-filters { display: flex; gap: 10px; flex-wrap: wrap; margin-bottom: 30px; }
.filter-btn {
  font-family: var(--font-mono);
  font-size: .82rem;
  padding: 8px 14px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: transparent;
  color: var(--text-dim);
  cursor: pointer;
}
.filter-btn.active { background: var(--accent); color: #04141a; border-color: var(--accent); }
.post-card { display: block; }
.post-meta { font-family: var(--font-mono); font-size: .76rem; color: var(--text-faint); display: flex; gap: 10px; margin-bottom: 10px; }
.post-cat { color: var(--accent); }
.post-title { font-size: 1.15rem; font-weight: 700; margin: 0 0 8px; }
.post-excerpt { color: var(--text-dim); font-size: .92rem; margin: 0; text-align: justify; text-justify: inter-word; }

.prose { max-width: 760px; }
.prose p, .prose li { text-align: justify; text-justify: inter-word; }
.prose h1, .prose h2, .prose h3 { letter-spacing: -0.01em; }
.prose pre { background: var(--bg-card); border: 1px solid var(--border); border-radius: 10px; padding: 16px; overflow-x: auto; font-family: var(--font-mono); font-size: .85rem; }
.prose code { font-family: var(--font-mono); background: var(--bg-card); padding: 2px 6px; border-radius: 4px; font-size: .88em; }
.prose pre code { background: none; padding: 0; }
.prose img { border-radius: 12px; margin: 20px 0; }
.prose blockquote { border-left: 3px solid var(--accent); margin: 20px 0; padding: 4px 20px; color: var(--text-dim); }
.prose a { color: var(--accent); text-decoration: underline; }

/* ---------- expertise pills ---------- */
.card-img {
  width: calc(100% + 52px);
  margin: -26px -26px 16px;
  aspect-ratio: 16/10;
  object-fit: cover;
  object-position: top;
  border-radius: 16px 16px 0 0;
  border-bottom: 1px solid var(--border);
}
.expertise-card { display: flex; flex-direction: column; gap: 10px; padding: 18px; }
.expertise-card-img {
  width: calc(100% + 36px);
  margin: -18px -18px 4px;
  aspect-ratio: 16/10;
  object-fit: cover;
  object-position: top;
  border-radius: 16px 16px 0 0;
  border-bottom: 1px solid var(--border);
}
.expertise-icon { font-size: 1.8rem; color: var(--accent); }

/* ---------- contact ---------- */
.contact-grid { display: grid; grid-template-columns: 0.85fr 1.15fr; gap: 32px; align-items: start; }
@media (max-width: 800px) { .contact-grid { grid-template-columns: 1fr; } }

/* ---------- booking form (pattern from EngiLink-POLIMAS.html booking tab) ---------- */
.form-group { margin-bottom: 20px; }
.form-label {
  display: block;
  font-family: var(--font-mono);
  font-size: .72rem;
  font-weight: 600;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--text-faint);
  margin-bottom: 8px;
}
.form-label .req { color: #f87171; }
.form-input {
  width: 100%;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 12px 14px;
  color: var(--text);
  font-family: var(--font-body);
  font-size: .92rem;
  transition: border-color .15s ease;
}
.form-input::placeholder { color: var(--text-faint); }
.form-input:focus { outline: none; border-color: var(--accent); }
.form-input[type="date"] { color-scheme: dark; }
:root[data-theme="light"] .form-input[type="date"] { color-scheme: light; }
.form-row-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
@media (max-width: 560px) { .form-row-2 { grid-template-columns: 1fr; } }

.radio-card-label { cursor: pointer; display: block; }
.radio-card-label input { position: absolute; opacity: 0; pointer-events: none; }
.radio-card {
  border: 2px solid var(--border);
  border-radius: 12px;
  padding: 14px;
  text-align: center;
  color: var(--text-faint);
  font-weight: 600;
  font-size: .88rem;
  transition: all .15s ease;
}
.radio-card i { display: block; font-size: 1.4rem; margin-bottom: 6px; }
.radio-card-label input:checked + .radio-card {
  border-color: var(--accent);
  background: var(--accent-soft);
  color: var(--accent);
}

.time-chip {
  border: 2px solid var(--border);
  border-radius: 12px;
  padding: 10px;
  text-align: center;
  background: transparent;
  color: var(--text-faint);
  font-weight: 600;
  font-size: .84rem;
  cursor: pointer;
  transition: all .15s ease;
  font-family: var(--font-body);
}
.time-chip i { display: block; font-size: 1.1rem; margin-bottom: 4px; }
.time-chip span.sub { display: block; font-weight: 400; font-size: .74rem; margin-top: 2px; }
.time-chip.active { border-color: var(--accent); background: var(--accent-soft); color: var(--accent); }

.priority-chip { border: 2px solid var(--border); border-radius: 10px; padding: 9px; text-align: center; font-size: .8rem; font-weight: 600; color: var(--text-faint); cursor: pointer; background: transparent; font-family: var(--font-body); transition: all .15s ease; }
.priority-chip.low.active { border-color: var(--success); background: color-mix(in srgb, var(--success) 15%, transparent); color: var(--success); }
.priority-chip.medium.active { border-color: #f59e0b; background: #f59e0b26; color: #f59e0b; }
.priority-chip.urgent.active { border-color: #ef4444; background: #ef444426; color: #f87171; }

.char-count { font-size: .74rem; color: var(--text-faint); text-align: right; margin-top: 6px; }

/* custom dropdown (replaces native <select> so styling/behaviour is fully
   ours — no dependency on the OS/browser's own popup rendering) */
.custom-select { position: relative; }
.custom-select-trigger {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  text-align: left;
  cursor: pointer;
  font-size: .92rem;
}
.custom-select-trigger .cs-value.placeholder { color: var(--text-faint); }
.custom-select-trigger .cs-caret { color: var(--text-faint); margin-left: 10px; flex-shrink: 0; transition: transform .15s ease; }
.custom-select.open .custom-select-trigger .cs-caret { transform: rotate(180deg); }
.custom-select.open .custom-select-trigger { border-color: var(--accent); }
.custom-select.invalid .custom-select-trigger { border-color: #f87171; }
.custom-select-menu {
  position: absolute;
  top: calc(100% + 6px);
  left: 0;
  right: 0;
  z-index: 30;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 10px;
  box-shadow: 0 20px 44px -16px rgba(0,0,0,0.6);
  max-height: 260px;
  overflow-y: auto;
  padding: 6px;
}
.custom-select-menu[hidden] { display: none; }
.custom-select-menu li {
  list-style: none;
  padding: 10px 12px;
  border-radius: 8px;
  font-size: .9rem;
  color: var(--text);
  cursor: pointer;
}
.custom-select-menu li:hover,
.custom-select-menu li.active { background: var(--accent-soft); color: var(--accent); }
.contact-row { display: flex; align-items: flex-start; gap: 14px; padding: 16px 0; border-bottom: 1px solid var(--border-soft); }
.contact-row:last-child { border-bottom: none; }
.contact-label { font-family: var(--font-mono); font-size: .72rem; letter-spacing: .06em; text-transform: uppercase; color: var(--text-faint); margin-bottom: 3px; }
.contact-value { font-size: .95rem; }
.contact-value a:hover { color: var(--accent); }

/* icon chip — pattern from EngiLink-POLIMAS.html contact card, adapted for dark theme */
.icon-chip {
  width: 38px; height: 38px;
  border-radius: 10px;
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
  font-size: 1.1rem;
  border: 1px solid var(--border);
  background: var(--bg-card);
  transition: background .15s ease, border-color .15s ease;
}
.icon-chip.teal { color: var(--accent); background: var(--accent-soft); border-color: color-mix(in srgb, var(--accent) 40%, transparent); }
.icon-chip.green { color: #25D366; background: #25D36622; border-color: #25D36655; }
.icon-chip.gray { color: var(--text-faint); }
.contact-row:hover .icon-chip.teal { background: color-mix(in srgb, var(--accent) 25%, transparent); }
.contact-row:hover .icon-chip.green { background: #25D36640; }

/* ---------- misc ---------- */
.text-dim { color: var(--text-dim); }
.card p.text-dim { text-align: justify; text-justify: inter-word; }
.text-accent { color: var(--accent); }
.center { text-align: center; }
.mt-0 { margin-top: 0; }
.placeholder-flag {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: .7rem;
  color: var(--gold);
  border: 1px dashed var(--gold);
  padding: 2px 8px;
  border-radius: 6px;
  margin-left: 8px;
}