/* =========================================================
   BITI Shared Stylesheet — High-Contrast Dark & Light Design
   Controls typography, layouts, cards, and interactive theme tokens.
   ========================================================= */

:root {
  --bg: #ffffff;
  --card-bg: #ffffff;
  --ink: #071a2f;
  --blue: #146ff5;
  --blue-hover: #0d5dd1;
  --lime: #b9f445;
  --muted: #5e7288;
  --line: #dce5ed;
  --cloud: #f4f8fb;
  --navy: #061b35;
  --dropdown-bg: #ffffff;
  --input-bg: #fafbfc;
  --nav-bg: #ffffff;
  --footer-bg: #031326;
  --footer-text: #afc1d0;
  --card-shadow: 0 10px 25px rgba(7, 26, 47, 0.06);
}

[data-theme="dark"], body.dark-theme {
  --bg: #08101a;
  --card-bg: #0f1c2c;
  --ink: #f1f6fa;
  --blue: #38bdf8;
  --blue-hover: #0284c7;
  --lime: #b9f445;
  --muted: #94a8bc;
  --line: #1c2e42;
  --cloud: #122133;
  --navy: #050b12;
  --dropdown-bg: #0f1c2c;
  --input-bg: #0a1422;
  --nav-bg: #08101a;
  --footer-bg: #040910;
  --footer-text: #8ea1b3;
  --card-shadow: 0 14px 35px rgba(0, 0, 0, 0.45);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: 'Manrope', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  color: var(--ink);
  background-color: var(--bg);
  transition: background-color 0.25s ease, color 0.25s ease;
  line-height: 1.6;
}

a {
  text-decoration: none;
  color: inherit;
}

h1, h2, h3, h4, h5, h6 {
  color: var(--ink);
  font-weight: 800;
  letter-spacing: -0.5px;
}

p, .copy, .section-intro {
  color: var(--muted);
  line-height: 1.75;
}

b, strong {
  color: var(--ink);
}

.container {
  width: min(1140px, calc(100% - 40px));
  margin: auto;
}

/* ── TOPBAR ──────────────────────────────── */
.topbar {
  height: 38px;
  background: var(--navy);
  color: #c9d7e5;
  font-size: 11px;
}
.topbar .container {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

/* ── NAVBAR ──────────────────────────────── */
.nav {
  height: 84px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: var(--nav-bg);
  transition: background-color 0.25s ease;
  position: relative;
  z-index: 100;
}
.logo img {
  display: block;
  width: 112px;
  height: auto;
}
.nav-links {
  display: flex;
  gap: 25px;
  align-items: center;
  font-size: 13px;
  font-weight: 700;
}
.nav-links a {
  color: var(--ink);
  transition: color 0.2s ease;
}
.nav-links > a:hover {
  color: var(--blue);
}

/* ── THEME TOGGLE BUTTON ─────────────────── */
.theme-toggle-btn {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 8px 15px;
  border-radius: 999px;
  background: var(--cloud);
  border: 1px solid var(--line);
  color: var(--ink);
  font: 700 12px 'DM Mono', monospace;
  cursor: pointer;
  transition: all 0.2s ease;
  white-space: nowrap;
}
.theme-toggle-btn:hover {
  border-color: var(--blue);
  color: var(--blue);
  transform: translateY(-1px);
}
.theme-toggle-btn .theme-icon {
  font-size: 14px;
}

/* ── NAV SIGN IN BUTTON ─────────────────── */
.nav-signin-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 14px;
  border-radius: 4px;
  background: var(--cloud);
  border: 1px solid var(--line);
  color: var(--ink);
  font: 700 12px 'Manrope', sans-serif;
  cursor: pointer;
  transition: all 0.2s ease;
  text-decoration: none;
  white-space: nowrap;
}
.nav-signin-btn:hover {
  border-color: var(--blue);
  color: var(--blue);
  transform: translateY(-1px);
}
.nav-actions {
  display: flex;
  align-items: center;
  gap: 10px;
}

/* ── BUTTONS ─────────────────────────────── */
.button {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: var(--blue);
  border: 1px solid var(--blue);
  border-radius: 4px;
  color: #fff;
  padding: 11px 18px;
  font-size: 12px;
  font-weight: 800;
  transition: all 0.2s ease;
}
.button:hover {
  background: var(--blue-hover);
  border-color: var(--blue-hover);
  transform: translateY(-1px);
}
.button.white {
  background: #ffffff;
  color: #071a2f;
  border: 1px solid #ffffff;
}
.button.white:hover {
  background: #e2ecf5;
  color: #071a2f;
  border-color: #e2ecf5;
}
[data-theme="dark"] .button.white,
body.dark-theme .button.white {
  background: rgba(255, 255, 255, 0.12);
  color: #ffffff;
  border: 1px solid rgba(255, 255, 255, 0.3);
  backdrop-filter: blur(8px);
}
[data-theme="dark"] .button.white:hover,
body.dark-theme .button.white:hover {
  background: rgba(255, 255, 255, 0.22);
  color: #ffffff;
  border-color: rgba(255, 255, 255, 0.5);
  box-shadow: 0 10px 20px rgba(0, 0, 0, 0.4);
}

/* ── DROPDOWNS ───────────────────────────── */
.dropdown {
  position: relative;
}
.dropdown-toggle {
  padding: 20px 0;
  border: 0;
  background: transparent;
  font: 700 13px 'Manrope', sans-serif;
  color: var(--ink);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
}
.dropdown-toggle:after {
  content: '';
  display: inline-block;
  width: 0;
  height: 0;
  border-left: 4px solid transparent;
  border-right: 4px solid transparent;
  border-top: 5px solid var(--blue);
  margin-left: 8px;
  vertical-align: middle;
}
.dropdown-menu {
  display: none;
  position: absolute;
  top: 60px;
  left: -18px;
  z-index: 150;
  width: 200px;
  padding: 8px;
  background: var(--dropdown-bg);
  border: 1px solid var(--line);
  box-shadow: 0 16px 36px rgba(0, 0, 0, 0.18);
  border-radius: 6px;
}
.dropdown:hover .dropdown-menu, .dropdown:focus-within .dropdown-menu {
  display: block;
}
.dropdown-menu a {
  display: block;
  padding: 10px 12px;
  font-size: 12px;
  font-weight: 600;
  color: var(--ink);
  border-radius: 4px;
  transition: background 0.15s ease, color 0.15s ease;
}
.dropdown-menu a:hover {
  background: var(--cloud);
  color: var(--blue);
}

/* ── HERO SECTION ────────────────────────── */
.hero {
  background: var(--navy);
  color: #fff;
  padding: 90px 0;
  position: relative;
  overflow: hidden;
}
.hero:after {
  content: '';
  position: absolute;
  right: -120px;
  top: -260px;
  width: 600px;
  height: 600px;
  border-radius: 50%;
  border: 1px solid rgba(255, 255, 255, 0.12);
  box-shadow: 0 0 0 60px rgba(255, 255, 255, 0.04), 0 0 0 120px rgba(255, 255, 255, 0.03);
}
.eyebrow {
  font: 600 11px 'DM Mono', monospace;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: var(--lime);
}
.hero h1 {
  font-size: clamp(38px, 5.5vw, 60px);
  line-height: 1.05;
  letter-spacing: -2.5px;
  margin: 16px 0;
  max-width: 760px;
  color: #ffffff;
  position: relative;
  z-index: 1;
}
.hero p {
  max-width: 580px;
  color: #b6c8dc;
  line-height: 1.75;
  font-size: 15px;
  position: relative;
  z-index: 1;
}

/* ── CONTENT SECTIONS ────────────────────── */
.content {
  padding: 80px 0;
}
.grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.courses-grid {
  grid-template-columns: repeat(2, 1fr);
  gap: 28px;
}

/* ── CARDS ───────────────────────────────── */
.card, .course-card, .accreditation-card, .client-logo-item {
  display: flex;
  flex-direction: column;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--card-bg);
  color: var(--ink);
  overflow: hidden;
  transition: all 0.25s ease;
  box-shadow: var(--card-shadow);
}
.card:hover, .course-card:hover, .accreditation-card:hover, .client-logo-item:hover {
  transform: translateY(-4px);
  border-color: var(--blue);
  box-shadow: 0 16px 36px rgba(0, 0, 0, 0.12);
}
.card-media {
  width: 100%;
  height: 200px;
  overflow: hidden;
  background: var(--navy);
  position: relative;
}
.card-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 0.35s ease;
}
.card:hover .card-media img, .course-card:hover .card-media img {
  transform: scale(1.05);
}
.card-body {
  padding: 24px;
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}
.card h2, .card h3, .course-card h2, .course-card h3 {
  margin: 10px 0;
  font-size: 20px;
  color: var(--ink);
  letter-spacing: -0.6px;
}
.card p, .course-card p {
  color: var(--muted);
  font-size: 14px;
  line-height: 1.7;
}

.tag {
  font: 600 11px 'DM Mono', monospace;
  letter-spacing: 1px;
  color: var(--blue);
}

/* ── TRACK BADGES ────────────────────────── */
.track-badge {
  display: inline-block;
  padding: 4px 12px;
  border-radius: 4px;
  font: 700 11px 'DM Mono', monospace;
  text-transform: uppercase;
  letter-spacing: 1px;
}
.badge-asset {
  background: #eaf3ff;
  color: #146ff5;
  border: 1px solid #c9e0ff;
}
[data-theme="dark"] .badge-asset, body.dark-theme .badge-asset {
  background: rgba(56, 189, 248, 0.15);
  color: #38bdf8;
  border: 1px solid rgba(56, 189, 248, 0.3);
}
.badge-sicip {
  background: #eafbf7;
  color: #00897b;
  border: 1px solid #b2dfdb;
}
[data-theme="dark"] .badge-sicip, body.dark-theme .badge-sicip {
  background: rgba(45, 212, 191, 0.15);
  color: #2dd4bf;
  border: 1px solid rgba(45, 212, 191, 0.3);
}

/* ── SPLIT & FACTS ───────────────────────── */
.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 55px;
  align-items: start;
}
.facts, .leadership-box {
  background: var(--cloud);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 30px;
  color: var(--ink);
}
.facts b {
  display: block;
  font-size: 32px;
  color: var(--blue);
  margin-top: 14px;
}
.list {
  padding: 0;
  margin: 0;
  list-style: none;
}
.list li {
  padding: 16px 0;
  border-bottom: 1px solid var(--line);
  font-size: 14px;
  font-weight: 700;
  color: var(--ink);
}
.list li span {
  display: block;
  font-size: 12px;
  font-weight: 400;
  color: var(--muted);
  margin-top: 5px;
}

/* ── EVENTS & STORIES ────────────────────── */
.team img, .story img {
  width: 54px;
  height: 54px;
  border-radius: 50%;
  object-fit: cover;
  float: left;
  margin-right: 15px;
  border: 2px solid var(--line);
}
.event {
  padding: 24px;
  border-left: 4px solid var(--blue);
  background: var(--cloud);
  border-top: 1px solid var(--line);
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  border-radius: 0 6px 6px 0;
  margin-bottom: 18px;
  color: var(--ink);
}
.event b {
  display: block;
  font: 600 11px 'DM Mono', monospace;
  color: var(--blue);
  margin-bottom: 8px;
}
.event h3 {
  margin: 0 0 6px;
  font-size: 19px;
  color: var(--ink);
}
.event p {
  margin: 0;
  font-size: 13px;
  color: var(--muted);
}

/* ── CONTACT BOXES ───────────────────────── */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}
.contact-box {
  padding: 30px;
  background: var(--cloud);
  border: 1px solid var(--line);
  border-radius: 8px;
  color: var(--ink);
}
.contact-box h3 {
  margin-top: 0;
  color: var(--ink);
}
.contact-box p, .contact-box a {
  font-size: 13px;
  line-height: 1.8;
  color: var(--muted);
  display: block;
}
.contact-box a:hover {
  color: var(--blue);
}

/* ── FORMS & INPUTS ──────────────────────── */
.form {
  background: var(--navy);
  padding: 32px;
  color: white;
  border-radius: 8px;
  border: 1px solid var(--line);
}
.form input, .form textarea {
  display: block;
  width: 100%;
  padding: 13px 0;
  margin: 10px 0;
  background: transparent;
  border: 0;
  border-bottom: 1px solid #4d6b88;
  color: white;
  font: 13px 'Manrope', sans-serif;
  outline: none;
}
.form button {
  margin-top: 15px;
}

.form-group label {
  color: var(--ink);
}
.form-group input, .form-group select, .form-group textarea {
  background: var(--input-bg);
  color: var(--ink);
  border: 1px solid var(--line);
}
option {
  background: var(--card-bg);
  color: var(--ink);
}

/* ── FOOTER ──────────────────────────────── */
.footer {
  background: var(--footer-bg);
  color: var(--footer-text);
  padding: 45px 0 25px;
  font-size: 12px;
  border-top: 1px solid var(--line);
}
.footer .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 15px;
  flex-wrap: wrap;
}
.footer a {
  color: var(--lime);
  text-decoration: none;
  transition: color 0.2s;
}
.footer a:hover {
  text-decoration: underline;
}
.footer img {
  width: 90px;
  filter: brightness(0) invert(1);
}

/* ── MOBILE MENU ─────────────────────────── */
.menu {
  display: none;
  border: 0;
  background: none;
  font-size: 22px;
  color: var(--ink);
  cursor: pointer;
}
.nav-links.open {
  display: flex !important;
  flex-direction: column;
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  background: var(--card-bg);
  padding: 20px 30px;
  box-shadow: 0 15px 35px rgba(0, 0, 0, 0.25);
  border-bottom: 1px solid var(--line);
  z-index: 200;
  gap: 0;
}
.nav-links.open a, .nav-links.open .dropdown-toggle {
  display: block;
  padding: 13px 0;
  border-bottom: 1px solid var(--line);
  width: 100%;
  color: var(--ink);
}
.nav-links.open .dropdown {
  width: 100%;
}
.nav-links.open .dropdown-menu {
  position: static;
  width: 100%;
  box-shadow: none;
  border: 0;
  padding: 0 0 0 16px;
}

@media (max-width: 800px) {
  .nav-links {
    display: none;
  }
  .menu {
    display: block;
  }
  .grid, .split, .contact-grid, .courses-grid {
    grid-template-columns: 1fr;
  }
  .topbar .container span {
    display: none;
  }
  .hero {
    padding: 70px 0;
  }
  .content {
    padding: 50px 0;
  }
}