/* =========================================================
   X T.ELIN — SMK Karya Guna 1 Kota Bekasi
   Tema: "Plat Nama Industri" — Teknik Elektronika Industri
   ========================================================= */

:root {
  --navy: #0B1220;
  --blue: #1D6FE0;
  --blue-bright: #47A9FF;
  --blue-soft: #E9F1FD;
  --amber: #F5A623;

  --paper: #F6F8FB;
  --surface: #FFFFFF;
  --text: #16202E;
  --text-secondary: #5B6B82;
  --border: #DEE5EE;

  --font-display: 'Oswald', system-ui, sans-serif;
  --font-body: 'Inter', system-ui, -apple-system, sans-serif;
  --font-mono: 'JetBrains Mono', ui-monospace, monospace;

  --radius-sm: 10px;
  --radius-lg: 20px;
  --shadow-sm: 0 1px 3px rgba(11, 18, 32, 0.07), 0 1px 2px rgba(11, 18, 32, 0.05);
  --shadow-md: 0 14px 32px rgba(11, 18, 32, 0.12);
  --container: min(1180px, 92vw);

  color-scheme: light;
}

html[data-theme="dark"] {
  --navy: #0A0F1A;
  --blue: #4E9CF5;
  --blue-bright: #7FC0FF;
  --blue-soft: rgba(78, 156, 245, 0.14);
  --amber: #FFB648;

  --paper: #0A0F1A;
  --surface: #121A28;
  --text: #E7ECF3;
  --text-secondary: #93A2B8;
  --border: #223049;

  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.35);
  --shadow-md: 0 16px 36px rgba(0, 0, 0, 0.45);

  color-scheme: dark;
}

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

html { scroll-behavior: smooth; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: 0.001ms !important; transition-duration: 0.001ms !important; }
}

body {
  background: var(--paper);
  color: var(--text);
  font-family: var(--font-body);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
  transition: background 0.25s ease, color 0.25s ease;
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button { font-family: inherit; cursor: pointer; }
ul { list-style: none; }

:focus-visible {
  outline: 2px solid var(--blue);
  outline-offset: 3px;
  border-radius: 4px;
}

/* ---------------------------------------------------------
   Decorative fixed "plate" texture background
--------------------------------------------------------- */
.plate-bg {
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background-image:
    repeating-linear-gradient(135deg, rgba(29, 111, 224, 0.035) 0 2px, transparent 2px 34px),
    radial-gradient(circle at 8% 4%, var(--blue-soft), transparent 42%),
    radial-gradient(circle at 96% 18%, rgba(245, 166, 35, 0.08), transparent 38%);
}

.brand-accent { color: var(--blue); }
.hero-title-accent { color: var(--blue); }

.eyebrow,
.section-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.76rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  color: var(--blue);
  text-transform: uppercase;
  margin-bottom: 0.9rem;
}
.eyebrow::before,
.section-eyebrow::before {
  content: '';
  width: 18px;
  height: 2px;
  background: var(--amber);
  display: inline-block;
}

/* =========================================================
   NAVBAR
   ========================================================= */
.navbar {
  position: sticky;
  top: 0;
  z-index: 100;
  background: color-mix(in srgb, var(--surface) 92%, transparent);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}

.nav-inner {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0.9rem 0;
  display: flex;
  align-items: center;
  gap: 1.75rem;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.55rem;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.15rem;
  letter-spacing: 0.02em;
  color: var(--navy);
  margin-right: 0.5rem;
  text-transform: uppercase;
}
html[data-theme="dark"] .brand { color: var(--text); }

.brand-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border-radius: 7px;
  background: var(--navy);
  color: var(--amber);
  font-family: var(--font-mono);
  font-size: 0.82rem;
  font-weight: 600;
  border: 1px solid var(--amber);
}

.nav-links {
  display: flex;
  gap: 1.6rem;
  flex: 1;
}
.nav-link {
  font-size: 0.9rem;
  color: var(--text-secondary);
  font-weight: 600;
  padding: 0.3rem 0;
  border-bottom: 2px solid transparent;
  transition: color 0.2s ease, border-color 0.2s ease;
}
.nav-link:hover { color: var(--navy); }
html[data-theme="dark"] .nav-link:hover { color: var(--text); }
.nav-link.active-link { color: var(--blue); border-color: var(--blue); }

.nav-ig {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: 999px;
  color: var(--text-secondary);
  border: 1px solid var(--border);
  transition: color 0.2s ease, border-color 0.2s ease;
}
.nav-ig svg { width: 18px; height: 18px; }
.nav-ig:hover { color: var(--blue); border-color: var(--blue); }

.theme-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: 999px;
  background: none;
  border: 1px solid var(--border);
  color: var(--text-secondary);
  transition: color 0.2s ease, border-color 0.2s ease;
}
.theme-toggle:hover { color: var(--amber); border-color: var(--amber); }
.theme-toggle svg { width: 18px; height: 18px; }
.theme-toggle .icon-moon { display: none; }
html[data-theme="dark"] .theme-toggle .icon-sun { display: none; }
html[data-theme="dark"] .theme-toggle .icon-moon { display: block; }

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  padding: 8px;
}
.nav-toggle span {
  width: 22px; height: 2px;
  background: var(--navy);
  transition: transform 0.25s ease, opacity 0.25s ease;
}
html[data-theme="dark"] .nav-toggle span { background: var(--text); }
.nav-toggle.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.open span:nth-child(2) { opacity: 0; }
.nav-toggle.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* =========================================================
   HERO
   ========================================================= */
.hero {
  position: relative;
  padding: 3.75rem 0 3rem;
  overflow: hidden;
}
.hero-inner {
  position: relative;
  z-index: 1;
  max-width: var(--container);
  margin: 0 auto;
  text-align: center;
}

.hero-title {
  font-family: var(--font-display);
  font-size: clamp(2.6rem, 7vw, 4.6rem);
  font-weight: 700;
  letter-spacing: 0.01em;
  line-height: 1.05;
  color: var(--navy);
  text-transform: uppercase;
  margin-bottom: 0.7rem;
}
html[data-theme="dark"] .hero-title { color: var(--text); }

.hero-sub {
  color: var(--text-secondary);
  font-size: 1.02rem;
  max-width: 52ch;
  margin: 0 auto 2.25rem;
}

.hero-banner {
  position: relative;
  max-width: 900px;
  margin: 0 auto;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  border: 1px solid var(--border);
  aspect-ratio: 16 / 8;
}
.hero-banner img {
  width: 100%; height: 100%;
  object-fit: cover;
}
.hero-banner-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(0deg, rgba(11,18,32,0.55) 0%, rgba(11,18,32,0) 45%);
}

.plate-tag {
  position: absolute;
  left: 50%;
  bottom: 1.25rem;
  transform: translateX(-50%);
  display: inline-flex;
  align-items: center;
  gap: 0.9rem;
  background: rgba(11, 18, 32, 0.82);
  color: var(--white, #fff);
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: 0.85rem;
  letter-spacing: 0.14em;
  padding: 0.65rem 1.4rem;
  border: 1px solid rgba(245, 166, 35, 0.6);
  border-radius: 4px;
  white-space: nowrap;
}
.plate-tag-corner {
  color: var(--amber);
  font-size: 0.7rem;
  opacity: 0.85;
}

/* ---------------------------------------------------------
   Spec strip — nameplate-style stat row under the hero
--------------------------------------------------------- */
.spec-strip {
  max-width: 900px;
  margin: -1.5rem auto 0;
  position: relative;
  z-index: 2;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-md);
  display: grid;
  grid-template-columns: repeat(4, 1fr);
}
.spec-item {
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
  padding: 1.15rem 1.25rem;
  border-right: 1px solid var(--border);
  text-align: left;
}
.spec-item:last-child { border-right: none; }
.spec-label {
  font-family: var(--font-mono);
  font-size: 0.66rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-secondary);
}
.spec-value {
  font-weight: 700;
  font-size: 0.95rem;
  color: var(--navy);
}
html[data-theme="dark"] .spec-value { color: var(--text); }

/* =========================================================
   SECTIONS (shared)
   ========================================================= */
.section { padding: 5rem 0; }
.section--alt { background: color-mix(in srgb, var(--surface) 55%, var(--paper)); }
.section-inner { max-width: var(--container); margin: 0 auto; }
.section-title {
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 3.6vw, 2.5rem);
  font-weight: 600;
  color: var(--navy);
  text-transform: uppercase;
  letter-spacing: 0.01em;
  margin-bottom: 0.6rem;
}
html[data-theme="dark"] .section-title { color: var(--text); }
.section-desc {
  color: var(--text-secondary);
  max-width: 62ch;
  margin-bottom: 2.75rem;
  font-size: 1rem;
}

/* =========================================================
   ORG / PENGURUS CARDS
   ========================================================= */
.org-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.25rem;
}

.org-card {
  position: relative;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 1.75rem 1.5rem;
  box-shadow: var(--shadow-sm);
  transition: box-shadow 0.2s ease, transform 0.2s ease, border-color 0.2s ease;
}
.org-card::before {
  content: '';
  position: absolute;
  top: 12px; left: 12px;
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--border);
}
.org-card:hover { box-shadow: var(--shadow-md); transform: translateY(-3px); border-color: var(--blue); }

.org-card--lead { background: var(--blue-soft); border-color: var(--blue); }

.org-badge {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--blue);
  background: var(--blue-soft);
  padding: 0.32rem 0.65rem;
  border-radius: 4px;
  margin-bottom: 1rem;
}
.org-card--lead .org-badge { background: var(--surface); }
.org-name { font-size: 1.08rem; font-weight: 700; color: var(--navy); margin-bottom: 0.3rem; line-height: 1.3; }
html[data-theme="dark"] .org-name { color: var(--text); }
.org-role { color: var(--text-secondary); font-size: 0.87rem; }

/* =========================================================
   PIKET
   ========================================================= */
.piket-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 1.1rem;
}

.piket-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 1.4rem 1.25rem;
  box-shadow: var(--shadow-sm);
  transition: border-color 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
}

.piket-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-bottom: 0.85rem;
  margin-bottom: 0.9rem;
  border-bottom: 1px dashed var(--border);
}
.piket-day {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.05rem;
  color: var(--navy);
  text-transform: uppercase;
}
html[data-theme="dark"] .piket-day { color: var(--text); }
.piket-status {
  font-family: var(--font-mono);
  font-size: 0.62rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text-secondary);
  background: var(--paper);
  border: 1px solid var(--border);
  padding: 0.22rem 0.5rem;
  border-radius: 999px;
  opacity: 0;
}
.piket-status::before { content: 'AKTIF'; }

.piket-list { display: flex; flex-direction: column; gap: 0.55rem; }
.piket-list li { font-size: 0.85rem; color: var(--text-secondary); line-height: 1.4; }
.piket-list li small { color: #94a3b8; }

.piket-card.piket-active {
  border-color: var(--amber);
  box-shadow: var(--shadow-md);
  background: var(--blue-soft);
}
.piket-card.piket-active .piket-status {
  opacity: 1;
  color: var(--navy);
  background: var(--amber);
  border-color: var(--amber);
}
.piket-card.piket-active .piket-day { color: var(--blue); }
.piket-card.piket-active .piket-list li { color: var(--text); }

/* =========================================================
   SEARCH BAR
   ========================================================= */
.search-bar {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 0.9rem 1.15rem;
  margin-bottom: 2rem;
  box-shadow: var(--shadow-sm);
  transition: border-color 0.2s ease;
}
.search-bar:focus-within { border-color: var(--blue); }
.search-icon { width: 18px; height: 18px; color: var(--text-secondary); flex-shrink: 0; }
.search-bar input {
  flex: 1;
  background: none;
  border: none;
  color: var(--text);
  font-family: var(--font-body);
  font-size: 0.95rem;
}
.search-bar input::placeholder { color: var(--text-secondary); }
.search-bar input:focus { outline: none; }
.search-count { font-family: var(--font-mono); font-size: 0.76rem; font-weight: 600; color: var(--text-secondary); white-space: nowrap; }

/* =========================================================
   STUDENT GRID
   ========================================================= */
.student-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1rem;
}

.student-card {
  display: flex;
  align-items: center;
  gap: 0.9rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 1rem 1.1rem;
  box-shadow: var(--shadow-sm);
  transition: border-color 0.2s ease, transform 0.2s ease;
}
.student-card:hover { border-color: var(--blue); transform: translateY(-2px); }
.student-num {
  font-family: var(--font-mono);
  font-size: 0.76rem;
  font-weight: 700;
  color: var(--blue);
  background: var(--blue-soft);
  border-radius: 6px;
  min-width: 2.1rem;
  text-align: center;
  padding: 0.32rem 0;
  flex-shrink: 0;
}
.student-name { font-size: 0.89rem; font-weight: 600; color: var(--text); }

.student-card.is-hidden { display: none; }

.student-empty { text-align: center; color: var(--text-secondary); padding: 2rem 0; font-size: 0.9rem; }

/* =========================================================
   GALERI — SLIDER
   ========================================================= */
.slider { position: relative; max-width: 820px; margin: 0 auto; }

.slider-viewport {
  overflow: hidden;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  border: 1px solid var(--border);
}
.slider-track {
  display: flex;
  transition: transform 0.5s cubic-bezier(0.65, 0, 0.35, 1);
}
.slide {
  flex: 0 0 100%;
  aspect-ratio: 4 / 3;
  position: relative;
}
.slide img {
  width: 100%; height: 100%;
  object-fit: cover;
}
.slide figcaption {
  position: absolute;
  left: 0; right: 0; bottom: 0;
  padding: 1.5rem 1.5rem 1.1rem;
  background: linear-gradient(0deg, rgba(11,18,32,0.78), rgba(11,18,32,0));
  color: #fff;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  letter-spacing: 0.03em;
  font-weight: 500;
}

.slider-btn {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 42px;
  height: 42px;
  border-radius: 50%;
  background: var(--surface);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--navy);
  transition: color 0.2s ease, border-color 0.2s ease;
}
html[data-theme="dark"] .slider-btn { color: var(--text); }
.slider-btn svg { width: 20px; height: 20px; }
.slider-btn:hover { color: var(--blue); border-color: var(--blue); }
.slider-prev { left: -21px; }
.slider-next { right: -21px; }

.slider-dots {
  display: flex;
  justify-content: center;
  gap: 0.5rem;
  margin-top: 1.25rem;
}
.slider-dots button {
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--border);
  border: none;
  padding: 0;
  transition: background 0.2s ease, transform 0.2s ease;
}
.slider-dots button.is-active { background: var(--amber); transform: scale(1.25); }

/* =========================================================
   KONTAK
   ========================================================= */
.contact-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.25rem;
}
.contact-card {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 1.6rem 1.5rem;
  box-shadow: var(--shadow-sm);
  transition: box-shadow 0.2s ease, transform 0.2s ease, border-color 0.2s ease;
}
.contact-card:not(.contact-card--admin):hover { box-shadow: var(--shadow-md); transform: translateY(-3px); border-color: var(--blue); }
.contact-icon {
  width: 42px; height: 42px;
  display: flex; align-items: center; justify-content: center;
  border-radius: 10px;
  background: var(--blue-soft);
  color: var(--blue);
  margin-bottom: 0.4rem;
}
.contact-icon svg { width: 22px; height: 22px; }
.contact-label { font-family: var(--font-mono); font-size: 0.72rem; letter-spacing: 0.05em; text-transform: uppercase; font-weight: 600; color: var(--text-secondary); }
.contact-value { font-size: 1.02rem; font-weight: 700; color: var(--navy); }
html[data-theme="dark"] .contact-value { color: var(--text); }
.contact-card--admin { background: var(--blue-soft); border-color: var(--blue); }

/* =========================================================
   FOOTER
   ========================================================= */
.footer { background: var(--navy); color: #fff; padding: 3rem 0 2rem; }
.footer-inner {
  max-width: var(--container);
  margin: 0 auto;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.6rem;
}
.footer-brand { font-family: var(--font-display); font-weight: 600; font-size: 1.2rem; text-transform: uppercase; }
.footer-text { color: rgba(255,255,255,0.6); font-size: 0.85rem; }
.footer-credit { color: rgba(255,255,255,0.45); font-size: 0.8rem; margin-bottom: 0.75rem; }
.back-to-top {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: none;
  border: 1px solid rgba(255,255,255,0.25);
  color: rgba(255,255,255,0.85);
  border-radius: 999px;
  padding: 0.5rem 1.05rem;
  font-size: 0.8rem;
  font-weight: 600;
  transition: border-color 0.2s ease, color 0.2s ease;
}
.back-to-top:hover { border-color: var(--amber); color: var(--amber); }
.back-to-top svg { width: 14px; height: 14px; }

/* =========================================================
   RESPONSIVE
   ========================================================= */
@media (max-width: 1024px) {
  .org-grid { grid-template-columns: repeat(2, 1fr); }
  .piket-grid { grid-template-columns: repeat(3, 1fr); }
  .student-grid { grid-template-columns: repeat(3, 1fr); }
  .contact-grid { grid-template-columns: 1fr; }
  .spec-strip { grid-template-columns: repeat(2, 1fr); }
  .spec-item:nth-child(2) { border-right: none; }
}

@media (max-width: 760px) {
  .nav-links {
    position: absolute;
    top: 100%; left: 0; right: 0;
    flex-direction: column;
    gap: 0;
    background: var(--surface);
    border-bottom: 1px solid var(--border);
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
  }
  .nav-links.open { max-height: 420px; }
  .nav-link {
    padding: 1rem var(--container);
    width: 100%;
    border-bottom: 1px solid var(--border);
    border-left: 2px solid transparent;
  }
  .nav-link.active-link { border-left-color: var(--blue); }
  .nav-toggle { display: flex; }

  .section { padding: 3.25rem 0; }
  .org-grid { grid-template-columns: 1fr; }
  .piket-grid { grid-template-columns: repeat(2, 1fr); }
  .student-grid { grid-template-columns: repeat(2, 1fr); }
  .slider-prev { left: 8px; }
  .slider-next { right: 8px; }
  .plate-tag { font-size: 0.68rem; padding: 0.5rem 1rem; gap: 0.5rem; letter-spacing: 0.08em; }
}

@media (max-width: 480px) {
  .piket-grid { grid-template-columns: 1fr; }
  .student-grid { grid-template-columns: 1fr; }
  .search-bar { flex-wrap: wrap; }
  .search-count { width: 100%; text-align: right; }
  .spec-strip { grid-template-columns: 1fr; }
  .spec-item { border-right: none; border-bottom: 1px solid var(--border); }
  .spec-item:last-child { border-bottom: none; }
}