/* THEME VARIABLES */
:root {
    --bg-900: #071023; /* deepest background */
    --bg-800: #0b1530;
    --panel: #0f1b2b; /* card background */
    --muted: #a8b3c7; /* secondary text */
    --text: #e8eef8; /* main text */
    --accent: #f6c94c; /* gold accent */
    --accent-2: #23d3ff; /* cyan accent for glow */
    --glass: rgba(255, 255, 255, 0.03);
    --radius: 12px;
    --container: 1100px;
    --shadow-1: 0 6px 18px rgba(2, 6, 23, 0.6);
    --shadow-2: 0 12px 30px rgba(2, 6, 23, 0.55);
    --glow: 0 8px 40px rgba(35, 211, 255, 0.08);
  }
  /* RESET + BASE */
  * {
    box-sizing: border-box;
  }
  html,
  body {
    height: 100%;
  }
  body {
    margin: 0;
    font-family: Inter, system-ui, -apple-system, "Segoe UI", Roboto,
      "Helvetica Neue", Arial;
    background: radial-gradient(
        1200px 400px at 10% 10%,
        rgba(35, 211, 255, 0.02),
        transparent
      ),
      linear-gradient(180deg, var(--bg-900), var(--bg-800));
    color: var(--text);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    line-height: 1.45;
  }
  /* LAYOUT CONTAINER */
  .container {
    max-width: var(--container);
    margin: 28px auto;
    padding: 0 20px;
  }
  
  /* NAVBAR */
  .navbar {
    background: linear-gradient(
      90deg,
      rgba(255, 255, 255, 0.02),
      rgba(255, 255, 255, 0.01)
    );
    border: 1px solid rgba(255, 255, 255, 0.03);
    padding: 12px 18px;
    border-radius: 14px;
    box-shadow: var(--shadow-1), 0 1px 0 rgba(255, 255, 255, 0.02) inset;
    backdrop-filter: blur(6px);
    margin-bottom: 18px;
  }
  .nav-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
  }
  .brand {
    display: flex;
    align-items: center;
    gap: 12px;
  }
  .logo {
    width: 56px;
    height: 56px;
    border-radius: 10px;
    object-fit: cover;
    background: linear-gradient(180deg, #0b2846, #082036);
    padding: 6px;
    border: 1px solid rgba(255, 255, 255, 0.02);
  }
  .brand-text .univ-name {
    font-weight: 700;
    color: var(--text);
  }
  .brand-text .univ-sub {
    font-size: 13px;
    color: var(--muted);
  }
  .main-nav {
    display: flex;
    align-items: center;
    gap: 10px;
  }
  .main-nav a {
    color: var(--muted);
    text-decoration: none;
    padding: 8px 12px;
    border-radius: 10px;
    font-weight: 600;
    transition: all 0.18s ease;
  }
  .main-nav a:hover {
    color: var(--text);
    background: rgba(255, 255, 255, 0.02);
    transform: translateY(-2px);
    box-shadow: var(--shadow-2);
  }
  .main-nav a.active {
    color: var(--text);
    background: linear-gradient(
      90deg,
      rgba(246, 201, 76, 0.08),
      rgba(35, 211, 255, 0.03)
    );
    box-shadow: 0 6px 20px rgba(246, 201, 76, 0.06);
  }
  /* BUTTONS */
  .btn {
    display: inline-block;
    padding: 10px 14px;
    border-radius: 10px;
    border: 0;
    cursor: pointer;
    font-weight: 700;
    background: linear-gradient(
      90deg,
      rgba(255, 255, 255, 0.02),
      rgba(255, 255, 255, 0.01)
    );
    color: var(--text);
    box-shadow: var(--shadow-1);
  }
  .btn.apply {
    background: linear-gradient(90deg, var(--accent), #ffd96f);
    color: #08101a;
    box-shadow: 0 10px 30px rgba(246, 201, 76, 0.12);
    border: 1px solid rgba(255, 255, 255, 0.04);
  }
  .btn:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-2), var(--glow);
  }
  /* CARD */
  .card {
    background: linear-gradient(
      180deg,
      rgba(255, 255, 255, 0.02),
      rgba(255, 255, 255, 0.01)
    );
    border-radius: var(--radius);
    padding: 16px;
    border: 1px solid rgba(255, 255, 255, 0.03);
    box-shadow: 0 8px 30px rgba(2, 6, 23, 0.6),
      0 2px 0 rgba(255, 255, 255, 0.012) inset;
  }
  /* HERO */
  .hero {
    display: grid;
    grid-template-columns: 1fr 360px;
    gap: 18px;
    align-items: start;
    margin-bottom: 18px;
  }
  .hero-left h1 {
    margin: 0;
    font-size: 28px;
    color: var(--text);
  }
  .muted {
    color: var(--muted);
  }
  .searchbar {
    display: flex;
    gap: 8px;
    margin-top: 14px;
  }
  .searchbar input {
    flex: 1;
    padding: 12px;
    border-radius: 10px;
    border: 1px solid rgba(255, 255, 255, 0.03);
    background: linear-gradient(
      180deg,
      rgba(255, 255, 255, 0.01),
      rgba(255, 255, 255, 0.005)
    );
    color: var(--text);
    box-shadow: 0 6px 18px rgba(2, 6, 23, 0.6) inset;
  }
  .searchbar button {
    padding: 10px 12px;
    border-radius: 10px;
    border: 0;
    background: transparent;
    color: var(--text);
    box-shadow: inset 0 -2px 0 rgba(255, 255, 255, 0.02);
  }
  /* CAMPUS PREVIEW */
  .campus-preview {
    border-radius: 12px;
    overflow: hidden;
    position: relative;
    min-height: 220px;
    background: linear-gradient(
      135deg,
      rgba(255, 255, 255, 0.02),
      rgba(255, 255, 255, 0.01)
    );
    border: 1px solid rgba(255, 255, 255, 0.03);
    box-shadow: var(--shadow-2);
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    padding: 12px;
  }
  .campus-preview img {
    width: 100%;
    height: 140px;
    object-fit: cover;
    border-radius: 8px;
    border: 1px solid rgba(255, 255, 255, 0.02);
    box-shadow: 0 8px 40px rgba(2, 6, 23, 0.55);
  }
  /* COMMENT: Replace the src in HTML where IMAGE comment is placed */
  /* GRID & SECTIONS */
  .grid-3 {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 18px;
    margin-top: 18px;
  }
  .course-list {
    display: flex;
    flex-direction: column;
    gap: 10px;
  }
  .course {
    display: flex;
    gap: 12px;
    align-items: center;
    background: linear-gradient(
      180deg,
      rgba(255, 255, 255, 0.012),
      rgba(255, 255, 255, 0.006)
    );
    padding: 12px;
    border-radius: 10px;
    border: 1px solid rgba(255, 255, 255, 0.02);
    box-shadow: 0 8px 24px rgba(2, 6, 23, 0.5);
  }
  .icon {
    width: 56px;
    height: 56px;
    border-radius: 10px;
    background: linear-gradient(135deg, #0e2b49, #06243a);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    color: var(--accent);
  }
  /* EVENTS */
  .events .event {
    padding: 12px;
    border-radius: 10px;
    background: linear-gradient(
      180deg,
      rgba(255, 255, 255, 0.015),
      rgba(255, 255, 255, 0.008)
    );
    border: 1px solid rgba(255, 255, 255, 0.02);
    box-shadow: 0 6px 20px rgba(2, 6, 23, 0.5);
  }
  
  /* FACULTY */
  .faculty-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 12px;
    margin-top: 12px;
  }
  .faculty {
    display: flex;
    gap: 12px;
    align-items: center;
    padding: 10px;
    border-radius: 10px;
    background: linear-gradient(
      180deg,
      rgba(255, 255, 255, 0.01),
      rgba(255, 255, 255, 0.005)
    );
    border: 1px solid rgba(255, 255, 255, 0.02);
    box-shadow: 0 8px 28px rgba(2, 6, 23, 0.5);
  }
  .faculty img {
    width: 64px;
    height: 64px;
    border-radius: 8px;
    object-fit: cover;
    border: 1px solid rgba(255, 255, 255, 0.03);
  }
  /* COURSES GRID (courses.html) */
  .courses-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 14px;
  }
  .course-card {
    display: flex;
    gap: 12px;
    background: linear-gradient(
      180deg,
      rgba(255, 255, 255, 0.01),
      rgba(255, 255, 255, 0.007)
    );
    padding: 12px;
    border-radius: 10px;
    border: 1px solid rgba(255, 255, 255, 0.02);
    box-shadow: 0 10px 30px rgba(2, 6, 23, 0.55);
  }
  .course-thumb img {
    width: 110px;
    height: 70px;
    object-fit: cover;
    border-radius: 8px;
    border: 1px solid rgba(255, 255, 255, 0.02);
  }
  
  /* FORMS (admissions.html) */
  .form {
    display: flex;
    flex-direction: column;
    gap: 12px;
    margin-top: 12px;
  }
  .form-row {
    display: flex;
    flex-direction: column;
    gap: 6px;
  }
  input,
  select,
  textarea {
    padding: 10px;
    border-radius: 8px;
    border: 1px solid rgba(255, 255, 255, 0.03);
    background: linear-gradient(
      180deg,
      rgba(255, 255, 255, 0.01),
      rgba(255, 255, 255, 0.005)
    );
    color: var(--text);
    box-shadow: inset 0 6px 12px rgba(2, 6, 23, 0.35);
  }
  input:focus,
  textarea:focus,
  select:focus {
    outline: none;
    box-shadow: 0 8px 30px rgba(35, 211, 255, 0.06);
    border-color: rgba(35, 211, 255, 0.12);
  }
  /* FOOTER */
  .site-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 20px;
    padding: 14px;
    border-radius: 10px;
    background: linear-gradient(
      90deg,
      rgba(255, 255, 255, 0.01),
      rgba(255, 255, 255, 0.005)
    );
    border: 1px solid rgba(255, 255, 255, 0.02);
    box-shadow: 0 10px 30px rgba(2, 6, 23, 0.6);
  }
  .small {
    color: var(--muted);
    font-size: 13px;
  }
  
  /* HOVER GLOWS & TRANSITIONS */
  a,
  button,
  input,
  select,
  textarea {
    transition: all 0.18s ease;
  }
  .course:hover,
  .course-card:hover,
  .faculty:hover {
    transform: translateY(-6px);
    box-shadow: 0 20px 50px rgba(2, 6, 23, 0.6), 0 0 40px rgba(35, 211, 255, 0.03);
  }
  .btn.apply:hover {
    box-shadow: 0 18px 50px rgba(246, 201, 76, 0.14),
      0 0 30px rgba(246, 201, 76, 0.06);
    transform: translateY(-4px);
  }
  /* SMALL SCREENS */
  @media (max-width: 980px) {
    .grid-3 {
      grid-template-columns: repeat(2, 1fr);
    }
    .faculty-grid {
      grid-template-columns: repeat(2, 1fr);
    }
    .courses-grid {
      grid-template-columns: repeat(2, 1fr);
    }
    .hero {
      grid-template-columns: 1fr;
    }
  }
  @media (max-width: 640px) {
    .nav-row {
      flex-direction: column;
      align-items: flex-start;
    }
    .main-nav a {
      display: none;
    } /* mobile menu handled by JS */
    .hamburger {
      display: inline-block;
    }
    .grid-3 {
      grid-template-columns: 1fr;
    }
    .courses-grid {
      grid-template-columns: 1fr;
    }
    .faculty-grid {
      grid-template-columns: 1fr;
    }
  }
  
  /* UTILITY */
  .tiny {
    font-size: 13px;
    color: var(--muted);
  }
  .pill {
    background: rgba(255, 255, 255, 0.02);
    padding: 6px 8px;
    border-radius: 999px;
    font-weight: 600;
    color: var(--muted);
  }
  
  /* Accessibility: focus visible */
  :focus {
    outline: 2px solid rgba(35, 211, 255, 0.12);
    outline-offset: 3px;
  }