/* ==========================================================================
   SHARED HEADER — Header, Navbar, Mega Menu, Sidebar,
   Panel Pengaturan Tampilan, Mode Gelap/Fullwidth.
   SATU SUMBER untuk index.html & semua sub-halaman.
   CATATAN: jangan edit aturan header/nav langsung di tiap halaman.
   ========================================================================== */

/* --- Tombol chalky (dipakai CTA di mega menu & konten) --- */
    .btn-chalky {
      background-color: var(--color-gold-chalky);
      color: #101820;
      border-color: var(--color-gold-chalky);
      font-weight: 700;
      box-shadow: 0 4px 14px rgba(236, 216, 152, 0.35);
    }
    .btn-chalky:hover {
      background-color: #f6eed5;
      color: #101820;
      border-color: #f6eed5;
      transform: translateY(-2px);
      box-shadow: 0 6px 18px rgba(236, 216, 152, 0.5);
    }
    .btn-chalky:active {
      transform: translateY(1px);
    }


/* --- Section 1: Header & Navigasi --- */
    /* ==========================================================================
       SECTION 1: HEADER & NAVIGATION
       ========================================================================== */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 1000;
      background-color: var(--color-header-bg);
      backdrop-filter: blur(12px);
      -webkit-backdrop-filter: blur(12px);
      border-bottom: 1px solid var(--color-shade-light);
      transition: background-color 0.2s ease;
      height: var(--header-height);
    }

    .navbar {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: var(--header-height);
      gap: var(--space-md);
      flex-wrap: nowrap; /* Menu dilarang melipat / menumpuk 2 baris */
      width: 100%;
    }

    .brand-link {
      display: flex;
      align-items: center;
      gap: 12px;
      text-decoration: none;
      flex-shrink: 0;
      white-space: nowrap;
    }
    .brand-logotype-img {
      height: 48px;
      width: auto;
      flex-shrink: 0;
    }
    .brand-logotype-img.logo-dark {
      display: none;
    }

    .nav-menu {
      display: flex;
      align-items: center;
      list-style: none;
      gap: 8px;
      flex-wrap: nowrap; /* Wajib satu baris */
      white-space: nowrap;
      margin: 0;
      padding: 0;
    }

    .nav-link {
      display: inline-flex;
      align-items: center;
      padding: 8px 14px;
      font-size: 0.9rem;
      font-weight: 500;
      color: var(--color-frosted-black);
      border-radius: var(--radius-full);
      transition: color 0.15s ease, background-color 0.15s ease;
      position: relative;
      white-space: nowrap;
      text-decoration: none;
    }
    .nav-link:hover {
      color: var(--color-primary);
      background-color: rgba(0, 71, 187, 0.05);
    }
    /* State active desktop: bullet dot emas */
    .nav-link.active {
      color: var(--color-primary);
      font-weight: 600;
    }
    .nav-link.active::before {
      content: "";
      width: 6px;
      height: 6px;
      border-radius: 9999px;
      background-color: var(--color-gold-bronze);
      margin-right: 8px;
      flex-shrink: 0;
    }

    /* Hamburger Button di Navbar */
    .hamburger-btn {
      display: none;
      background: transparent;
      border: 1px solid var(--color-shade-light);
      border-radius: var(--radius-sm);
      width: 42px;
      height: 42px;
      cursor: pointer;
      padding: 0;
      align-items: center;
      justify-content: center;
      color: var(--color-frosted-black);
      transition: all 0.2s ease;
      flex-shrink: 0;
    }
    .hamburger-btn:hover {
      background-color: var(--color-bright-snow);
      border-color: var(--color-gold-bronze);
      color: var(--color-primary);
    }
    .hamburger-btn:focus-visible {
      outline: none;
      box-shadow: 0 0 0 3px rgba(203, 160, 82, 0.35);
    }

    /* Mode paksa hamburger bila ruang sempit */
    .site-header.nav-force-hamburger .nav-menu {
      display: none !important;
    }
    .site-header.nav-force-hamburger .hamburger-btn {
      display: inline-flex !important;
    }

    /* ==========================================================================
       NAVBAR: DROPDOWN & MEGA MENU (Desktop)
       ========================================================================== */
    .nav-item {
      position: relative;
    }

    /* Panah kecil (.nav-caret) pada item ber-submenu, rotasi saat terbuka */
    .nav-caret {
      width: 13px;
      height: 13px;
      margin-left: 4px;
      flex-shrink: 0;
      transition: transform 0.2s ease;
    }
    .nav-item-mega.open .nav-caret {
      transform: rotate(180deg);
    }

    /* Panel Mega Menu: full-width tepat di bawah header */
    .mega-panel {
      position: fixed;
      top: var(--header-height);
      left: 0;
      right: 0;
      background-color: var(--color-header-bg);
      backdrop-filter: blur(12px);
      -webkit-backdrop-filter: blur(12px);
      white-space: normal;
      border-bottom: 1px solid var(--color-shade-light);
      box-shadow: var(--shadow-hover);
      opacity: 0;
      visibility: hidden;
      pointer-events: none;
      transform: translateY(-8px);
      transition: opacity 0.22s ease, transform 0.22s ease, visibility 0.22s ease;
      z-index: 1050;
    }
    .nav-item-mega:hover .mega-panel,
    .nav-item-mega:focus-within .mega-panel,
    .nav-item-mega.open .mega-panel {
      opacity: 1;
      visibility: visible;
      pointer-events: auto;
      transform: translateY(0);
    }

    .mega-container {
      padding-top: 26px;
      padding-bottom: 26px;
    }

    .mega-grid {
      display: grid;
      gap: 32px;
    }
    .mega-grid-akademik {
      grid-template-columns: 1.35fr 1fr 1fr 1fr;
    }
    .mega-grid-tentang {
      grid-template-columns: 1.4fr 1fr 1fr 1fr;
    }
    .mega-grid-mahasiswa {
      grid-template-columns: repeat(4, 1fr);
    }
    .mega-grid-fasilitas {
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
    }

    .mega-col {
      display: flex;
      flex-direction: column;
      gap: 6px;
      min-width: 0;
    }

    .mega-col-title {
      display: flex;
      align-items: center;
      justify-content: space-between;
      font-family: var(--font-heading);
      font-size: 0.72rem;
      font-weight: 700;
      text-transform: uppercase;
      letter-spacing: 0.04em;
      color: var(--color-gold-earth);
      padding-bottom: 10px;
      margin-bottom: 4px;
      border-bottom: 2px solid var(--color-gold-chalky);
      white-space: nowrap;
    }

    /* Kartu intro brand di mega menu Tentang */
    .mega-intro-card {
      display: flex;
      flex-direction: column;
      align-items: flex-start;
      gap: 14px;
      padding: 22px;
      border-radius: var(--radius-card);
      background: var(--grad-blue);
      color: #FFFFFF;
      box-shadow: var(--shadow-btn);
    }
    .mega-intro-logo {
      height: 34px;
      width: auto;
    }
    .mega-intro-badge {
      background-color: rgba(236, 216, 152, 0.16);
      border-color: rgba(236, 216, 152, 0.55);
      color: var(--color-gold-chalky);
    }
    .mega-intro-copy {
      font-size: 0.875rem;
      line-height: 1.65;
      color: rgba(255, 255, 255, 0.92);
      margin: 0;
    }
    .mega-intro-cta {
      margin-top: 4px;
    }

    /* Item prodi (button) di mega menu akademik */
    .mega-prodi-btn {
      display: flex;
      align-items: center;
      gap: 12px;
      width: 100%;
      padding: 9px 10px;
      border: 1px solid transparent;
      border-radius: var(--radius-sm);
      background: transparent;
      text-align: left;
      cursor: pointer;
      transition: background-color 0.15s ease, transform 0.15s ease;
    }
    .mega-prodi-btn:hover {
      background-color: rgba(0, 71, 187, 0.045);
      transform: translateX(2px);
    }
    .mega-prodi-logo {
      width: 40px;
      height: 40px;
      border-radius: 10px;
      flex-shrink: 0;
      object-fit: contain;
      padding: 4px;
      border: 1px solid var(--color-shade-light);
      background-color: var(--color-card-light);
    }
    .mega-prodi-logo-generic {
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--color-primary);
    }
    .mega-prodi-logo-generic .icon {
      width: 22px;
      height: 22px;
    }
    .mega-prodi-meta {
      display: flex;
      flex-direction: column;
      gap: 2px;
      min-width: 0;
    }
    .mega-prodi-meta strong {
      font-size: 0.8125rem;
      font-weight: 600;
      color: var(--color-frosted-black);
      line-height: 1.3;
    }
    .mega-prodi-meta em {
      font-family: var(--font-arabic);
      font-style: normal;
      font-size: 0.875rem;
      color: var(--color-grey-olive);
      line-height: 1.4;
      overflow: hidden;
      text-overflow: ellipsis;
      white-space: nowrap;
    }

    /* Tautan umum di dalam mega menu */
    .mega-link {
      display: flex;
      align-items: center;
      gap: 10px;
      padding: 8px 10px;
      border-radius: var(--radius-sm);
      font-size: 0.82rem;
      font-weight: 500;
      color: var(--color-body-text);
      transition: background-color 0.15s ease, color 0.15s ease;
    }
    .mega-link:hover {
      background-color: rgba(0, 71, 187, 0.05);
      color: var(--color-primary);
    }
    .mega-link .icon {
      width: 16px;
      height: 16px;
      color: var(--color-primary);
      flex-shrink: 0;
    }
    .mega-link-all {
      margin-top: 6px;
      font-weight: 700;
      color: var(--color-primary);
    }
    .mega-link-all:hover {
      background-color: rgba(0, 71, 187, 0.08);
    }

    .mega-cta {
      margin-top: 14px;
      width: 100%;
    }

    /* Kartu thumbnail fasilitas di mega menu */
    .mega-fasilitas-item {
      position: relative;
      display: block;
      border-radius: var(--radius-surface);
      overflow: hidden;
      border: 1px solid var(--color-shade-light);
      box-shadow: var(--shadow-card);
      aspect-ratio: 4 / 3;
    }
    .mega-fasilitas-item img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.35s ease;
    }
    .mega-fasilitas-item:hover img {
      transform: scale(1.06);
    }
    .mega-fasilitas-item:focus-visible {
      outline: none;
      box-shadow: 0 0 0 3px rgba(203, 160, 82, 0.45);
    }
    .mega-fasilitas-overlay {
      position: absolute;
      inset: 0;
      background: linear-gradient(180deg, rgba(0, 20, 137, 0) 30%, rgba(0, 20, 137, 0.88) 100%);
      display: flex;
      flex-direction: column;
      justify-content: flex-end;
      padding: 14px;
    }
    .mega-fasilitas-label {
      font-size: 0.625rem;
      font-weight: 700;
      text-transform: uppercase;
      letter-spacing: 0.05em;
      color: var(--color-gold-chalky);
    }
    .mega-fasilitas-title {
      font-family: var(--font-heading);
      font-size: 0.9rem;
      font-weight: 700;
      text-transform: uppercase;
      color: #FFFFFF;
      line-height: 1.3;
    }

    /* ==========================================================================
       SIDEBAR OFF-CANVAS (Bersih, Rapi, Standar Tanpa Header Berlebih)
       ========================================================================== */
    .sidebar-backdrop {
      position: fixed;
      inset: 0;
      background-color: rgba(16, 24, 32, 0.5);
      backdrop-filter: blur(3px);
      -webkit-backdrop-filter: blur(3px);
      z-index: 1001;
      opacity: 0;
      visibility: hidden;
      transition: opacity 0.25s ease, visibility 0.25s ease;
    }
    .sidebar-backdrop.is-open {
      opacity: 1;
      visibility: visible;
    }

    .sidebar-drawer {
      position: fixed;
      top: 0;
      right: 0;
      bottom: 0;
      width: min(320px, 85vw);
      height: 100dvh;
      height: 100vh;
      background-color: var(--color-card-light);
      z-index: 1002;
      padding: 24px 28px;
      display: flex;
      flex-direction: column;
      transform: translateX(100%);
      visibility: hidden;
      transition: transform 0.28s cubic-bezier(0.16, 1, 0.3, 1), visibility 0.28s;
      box-shadow: -10px 0 30px rgba(0, 0, 0, 0.12);
      overflow-y: auto;
      -webkit-overflow-scrolling: touch;
    }
    .sidebar-drawer.is-open {
      transform: translateX(0);
      visibility: visible;
    }

    /* Bagian Atas: Hanya tombol close standar */
    .sidebar-top {
      display: flex;
      justify-content: flex-end;
      align-items: center;
      margin-bottom: 28px;
    }
    .sidebar-close-btn {
      background: transparent;
      border: 1px solid var(--color-shade-light);
      border-radius: var(--radius-sm);
      width: 40px;
      height: 40px;
      cursor: pointer;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      color: var(--color-frosted-black);
      transition: all 0.15s ease;
    }
    .sidebar-close-btn:hover {
      background-color: var(--color-bright-snow);
      border-color: var(--color-gold-bronze);
      color: var(--color-primary);
    }
    .sidebar-close-btn:focus-visible {
      outline: none;
      box-shadow: 0 0 0 3px rgba(203, 160, 82, 0.35);
    }

    /* Navigasi Sidebar Bersih (Sama seperti Desktop, Tanpa Styling Berlebihan) */
    .sidebar-nav-list {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 12px;
      padding: 0;
      margin: 0;
    }

    .sidebar-nav-link {
      display: inline-flex;
      align-items: center;
      padding: 10px 0;
      font-size: 1.05rem;
      font-weight: 500;
      color: var(--color-frosted-black);
      text-decoration: none;
      transition: color 0.15s ease;
      position: relative;
    }
    .sidebar-nav-link:hover {
      color: var(--color-primary);
    }

    /* State active sidebar persis seperti desktop (dot emas kecil) */
    .sidebar-nav-link.active {
      color: var(--color-primary);
      font-weight: 600;
    }
    .sidebar-nav-link.active::before {
      content: "";
      width: 6px;
      height: 6px;
      border-radius: 9999px;
      background-color: var(--color-gold-bronze);
      margin-right: 10px;
      flex-shrink: 0;
    }

    /* Sidebar Accordion (Menu ber-submenu) */
    .sidebar-nav-group {
      border-bottom: 1px solid var(--color-shade-light);
    }
    .sidebar-nav-toggle {
      display: flex;
      align-items: center;
      justify-content: space-between;
      width: 100%;
      padding: 10px 0;
      background: transparent;
      border: none;
      cursor: pointer;
      font-family: var(--font-body);
      font-size: 1.05rem;
      font-weight: 500;
      color: var(--color-frosted-black);
      text-align: left;
      transition: color 0.15s ease;
    }
    .sidebar-nav-toggle:hover,
    .sidebar-nav-toggle.active {
      color: var(--color-primary);
    }
    .sidebar-nav-toggle.active {
      font-weight: 600;
    }
    .sidebar-caret {
      width: 16px;
      height: 16px;
      color: var(--color-grey-olive);
      transition: transform 0.2s ease;
    }
    .sidebar-nav-toggle[aria-expanded="true"] .sidebar-caret {
      transform: rotate(180deg);
      color: var(--color-primary);
    }
    .sidebar-subnav {
      list-style: none;
      margin: 0;
      padding: 0;
      max-height: 0;
      overflow: hidden;
      opacity: 0;
      transition: max-height 0.3s ease, opacity 0.2s ease;
    }
    .sidebar-nav-group.is-open .sidebar-subnav {
      opacity: 1;
    }
    .sidebar-sub-link {
      display: block;
      padding: 8px 0 8px 14px;
      font-size: 0.9rem;
      color: var(--color-body-text);
      border-left: 2px solid var(--color-shade-light);
      transition: color 0.15s ease, border-color 0.15s ease;
    }
    .sidebar-sub-link:hover,
    .sidebar-sub-link.active {
      color: var(--color-primary);
      border-left-color: var(--color-gold-bronze);
    }
    .sidebar-subnav .sidebar-sub-link:last-child {
      padding-bottom: 14px;
    }


/* --- Responsive: hamburger menggantikan nav-menu (<=960px) --- */
    @media (max-width: 960px) {
      .nav-menu {
        display: none !important;
      }
      .hamburger-btn {
        display: inline-flex !important;
      }
    }
@media (max-width: 480px) {
      :root {
        --header-height: 64px;
      }
      .navbar {
        height: 64px;
      }
      .brand-logotype-img {
        height: 42px;
      }
      .nav-cta-group .btn-secondary {
        display: none;
      }
      .nav-cta-group .btn-primary {
        padding: 7px 14px;
        font-size: 0.8125rem;
      }
      /* Padding kontainer header disamakan dengan kontainer halaman utama
         pada layar kecil, agar navbar kedua halaman benar-benar identik. */
      .site-header .container-wide {
        padding-left: 16px;
        padding-right: 16px;
      }
}

/* --- Tata Letak Fullwidth + Transisi --- */
    html[data-layout="full"] {
      --container-current: 100%;
      --container-current-wide: 100%;
    }

    /* Beri napas horizontal ekstra saat layar lebar */
    @media (min-width: 1025px) {
      html[data-layout="full"] .container,
      html[data-layout="full"] .container-wide {
        padding-left: clamp(24px, 3vw, 64px);
        padding-right: clamp(24px, 3vw, 64px);
      }
    }

    /* Readability guard: batasi panjang baris teks, bukan lebar kontainer */
    html[data-layout="full"] .value-copy,
    html[data-layout="full"] .prodi-card-copy,
    html[data-layout="full"] .ekosistem-copy,
    html[data-layout="full"] .ekosistem-visual-text,
    html[data-layout="full"] .footer-desc {
      max-width: 68ch;
    }

    /* Manfaatkan lebar ekstra lewat penambahan kolom grid */
    @media (min-width: 1400px) {
      html[data-layout="full"] .prodi-grid-s1 {
        grid-template-columns: repeat(4, 1fr);
      }
    }

    /* Ruang antar kartu lebih lega saat sangat lebar */
    @media (min-width: 1600px) {
      html[data-layout="full"] .values-grid,
      html[data-layout="full"] .stats-grid,
      html[data-layout="full"] .fasilitas-grid {
        gap: var(--space-lg);
      }
    }

    .container,
    .container-wide {
      transition: max-width 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    }

    /* Transisi warna saat ganti mode Terang/Gelap/Auto */
    html.theme-anim,
    html.theme-anim *,
    html.theme-anim *::before,
    html.theme-anim *::after {
      transition: background-color 0.8s ease, color 0.8s ease,
        border-color 0.8s ease, box-shadow 0.8s ease,
        fill 0.8s ease, stroke 0.8s ease !important;
    }

/* --- Panel Pengaturan Tampilan --- */
    .layout-toggle-btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      width: 26px;
      height: 26px;
      padding: 0;
      border: 1px solid var(--color-shade-light);
      border-radius: var(--radius-sm);
      background: transparent;
      color: var(--color-frosted-black);
      cursor: pointer;
      transition: background-color 0.2s, border-color 0.2s, color 0.2s, transform 0.15s;
    }
    .layout-toggle-btn:hover {
      background: var(--color-bright-snow);
      border-color: var(--color-gold-bronze);
      color: var(--color-primary);
    }
    .layout-toggle-btn:focus-visible {
      outline: none;
      box-shadow: 0 0 0 3px rgba(203, 160, 82, 0.35);
    }
    .layout-toggle-btn .layout-icon-expand,
    .layout-toggle-btn .layout-icon-minimize,
    .layout-toggle-btn .layout-icon-sliders {
      width: 13px;
      height: 13px;
    }
    .layout-toggle-btn .layout-icon-minimize {
      display: none;
    }
    html[data-layout="full"] .layout-toggle-btn .layout-icon-expand {
      display: none;
    }
    html[data-layout="full"] .layout-toggle-btn .layout-icon-minimize {
      display: inline;
    }

    /* ===== Panel Pengaturan Tampilan (#2) ===== */
    .layout-settings {
      position: relative;
      margin-left: 4px;
      display: inline-flex;
      align-items: center;
    }
    .layout-toggle-btn {
      position: relative;
      z-index: 2;
    }
    .layout-settings-panel {
      position: absolute;
      top: calc(100% + 9px);
      right: 0;
      width: min(340px, calc(100vw - 32px));
      background: var(--color-card-light);
      border: 1px solid var(--color-shade-light);
      border-radius: var(--radius-surface);
      box-shadow: var(--shadow-hover), 0 0 0 8px rgba(0, 0, 0, 0.03);
      padding: 18px;
      opacity: 0;
      visibility: hidden;
      transform: translateY(-6px) scale(0.98);
      transform-origin: top right;
      transition: opacity 0.2s ease, transform 0.2s ease, visibility 0.2s ease;
      z-index: 48;
    }
    .layout-settings.is-open .layout-settings-panel {
      opacity: 1;
      visibility: visible;
      transform: translateY(0) scale(1);
    }
    .layout-settings-close {
      margin-left: auto;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      width: 34px;
      height: 34px;
      gap: 6px;
      border: 1px solid transparent;
      border-radius: var(--radius-sm);
      background: transparent;
      color: var(--color-grey-olive);
      cursor: pointer;
      transition: background-color 0.2s, color 0.2s, border-color 0.2s;
    }
    .layout-settings-close:hover {
      background: var(--color-shade-light);
      color: var(--color-frosted-black);
    }
    .layout-settings-close:focus-visible {
      outline: 2px solid var(--color-primary);
      outline-offset: 2px;
    }
    .layout-settings-panel > .layout-settings-close {
      position: absolute;
      top: 14px;
      right: 14px;
    }
    .layout-settings-group {
      margin-top: 14px;
    }
    .layout-settings-group:first-of-type {
      margin-top: 0;
    }
    .layout-settings-title {
      display: block;
      font-family: var(--font-heading);
      font-size: 0.8rem;
      font-weight: 700;
      letter-spacing: 0.02em;
      text-transform: uppercase;
      color: var(--color-grey-olive);
      margin-bottom: 8px;
    }
    .layout-settings-options {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 6px;
    }
    .layout-setting-option {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 11px 12px;
      border: 1px solid var(--color-shade-light);
      border-radius: var(--radius-sm);
      background: var(--color-bright-snow);
      color: var(--color-frosted-black);
      font-family: var(--font-body);
      font-size: 0.85rem;
      font-weight: 600;
      cursor: pointer;
      transition: border-color 0.2s, background-color 0.2s, color 0.2s, box-shadow 0.2s;
    }
    .layout-setting-option .icon {
      width: 18px;
      height: 18px;
      flex-shrink: 0;
    }
    .layout-setting-option:hover {
      border-color: var(--color-primary);
    }
    .layout-setting-option[aria-pressed="true"] {
      border-color: var(--color-primary);
      background: var(--color-primary);
      color: var(--color-on-primary);
      box-shadow: var(--shadow-btn);
    }

/* --- Dark mode: penyesuaian khusus chrome --- */
html[data-theme="dark"] .logo-light { display: none; }
html[data-theme="dark"] .logo-dark { display: block; }
html[data-theme="dark"] .site-footer { background-color: #05090F; }
html[data-theme="dark"] .mega-prodi-logo { background-color: #F8F8F8; }
html[data-theme="dark"] .nav-link:hover,
html[data-theme="dark"] .mega-link:hover,
html[data-theme="dark"] .mega-prodi-btn:hover { background-color: rgba(111, 168, 228, 0.14); }

@media (prefers-color-scheme: dark) {
  html[data-theme="auto"] .logo-light { display: none; }
  html[data-theme="auto"] .logo-dark { display: block; }
  html[data-theme="auto"] .site-footer { background-color: #05090F; }
  html[data-theme="auto"] .mega-prodi-logo { background-color: #F8F8F8; }
  html[data-theme="auto"] .nav-link:hover,
  html[data-theme="auto"] .mega-link:hover,
  html[data-theme="auto"] .mega-prodi-btn:hover { background-color: rgba(111, 168, 228, 0.14); }
}