/* ==========================================
   GLOBAL CSS - HMTI
   Berisi: reset, variabel warna & font, header, footer, hamburger menu
   ========================================== */

:root {
  /* Warna Ikonik HMTI - WAJIB ada di seluruh website */
  --hmti-dark: #5d6470;
  --hmti-light: #a3b3c1;

  /* Warna pendukung tambahan (boleh dikreasikan) */
  --hmti-bg: #f4f6f8;
  --hmti-white: #ffffff;
  --hmti-text: #2d2f36;

  /* Semantic / derived colors */
  --card-bg: #ffffff;
  --card-shadow: rgba(0, 0, 0, 0.06);
  --card-hover-shadow: rgba(0, 0, 0, 0.12);
  --border-color: #dfe3e7;
  --text-secondary: #6b6f76;
  --text-muted: #8a8f98;
  --nav-bg: #ffffff;
  --footer-text: #ffffff;
  --header-shadow: rgba(0, 0, 0, 0.08);
  --section-alt-bg: #ffffff;
  --input-bg: #ffffff;
  --hover-bg: #f8f9fa;
  --overlay-bg: rgba(0, 0, 0, 0.5);
  --lightbox-bg: rgba(20, 22, 26, 0.92);
  --danger-color: #b23b3b;
  --danger-bg: #fdecea;
  --success-color: #1e7e42;
  --success-bg: #e6f7ed;
  --warning-color: #e8a317;
  --hero-overlay: linear-gradient(180deg, rgba(93, 100, 112, 0.75), rgba(93, 100, 112, 0.9));
  --detail-overlay: linear-gradient(180deg, rgba(93, 100, 112, 0.3), rgba(30, 32, 36, 0.9));

  --font-heading: "Montserrat", sans-serif;
  --font-body: "Poppins", sans-serif;
}

/* ==========================================
   DARK MODE
   ========================================== */
[data-theme="dark"] {
  --hmti-dark: #a3b3c1;
  --hmti-light: #5d6470;
  --hmti-bg: #0f1117;
  --hmti-white: #1a1d27;
  --hmti-text: #e2e4e9;

  --card-bg: #22252f;
  --card-shadow: rgba(0, 0, 0, 0.3);
  --card-hover-shadow: rgba(0, 0, 0, 0.5);
  --border-color: #2e313d;
  --text-secondary: #9ca0ac;
  --text-muted: #727682;
  --nav-bg: #161922;
  --footer-text: #e2e4e9;
  --header-shadow: rgba(0, 0, 0, 0.4);
  --section-alt-bg: #161922;
  --input-bg: #262a35;
  --hover-bg: #2a2e3a;
  --overlay-bg: rgba(0, 0, 0, 0.7);
  --lightbox-bg: rgba(10, 12, 18, 0.95);
  --danger-color: #e35d5d;
  --danger-bg: #2a1a1a;
  --success-color: #4ade80;
  --success-bg: #1a2a1a;
  --warning-color: #fbbf24;
  --hero-overlay: linear-gradient(180deg, rgba(15, 17, 23, 0.85), rgba(15, 17, 23, 0.95));
  --detail-overlay: linear-gradient(180deg, rgba(15, 17, 23, 0.5), rgba(10, 12, 18, 0.95));
}

/* Smooth transition for theme switching */
html {
  transition:
    background-color 0.3s ease,
    color 0.3s ease;
}

body {
  transition:
    background-color 0.3s ease,
    color 0.3s ease;
}

*,
*::before,
*::after {
  transition:
    background-color 0.25s ease,
    border-color 0.25s ease,
    color 0.25s ease,
    box-shadow 0.25s ease;
}

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

body {
  font-family: var(--font-body);
  color: var(--hmti-text);
  background-color: var(--hmti-bg);
  line-height: 1.6;
}

h1,
h2,
h3,
h4,
h5,
h6 {
  font-family: var(--font-heading);
}

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

img {
  max-width: 100%;
  display: block;
}

/* ==========================================
   HEADER
   ========================================== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background-color: var(--nav-bg);
  box-shadow: 0 2px 8px var(--header-shadow);
}

.header-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 12px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
}

.brand img {
  height: 40px;
  width: 40px;
}

.brand span {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1.3rem;
  color: var(--hmti-dark);
}

/* Menu Navigasi (Desktop) */
.nav-menu {
  display: flex;
  align-items: center;
  gap: 28px;
  list-style: none;
}

.nav-menu > li {
  position: relative;
}

.nav-menu > li > a {
  position: relative;
  display: flex;
  align-items: center;
  gap: 6px;
  font-weight: 500;
  color: var(--hmti-text);
  padding: 8px 0;
  min-height: 44px; /* target sentuh minimal, standar aksesibilitas mobile */
  transition: color 0.25s ease;
}

/* Garis bawah animasi saat hover - tumbuh dari kiri ke kanan */
.nav-menu > li > a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 4px;
  width: 0;
  height: 2px;
  background-color: var(--hmti-dark);
  border-radius: 2px;
  transition: width 0.3s ease;
}

.nav-menu > li > a:hover::after,
.nav-menu > li.active > a::after {
  width: 100%;
}

.dropdown-icon {
  font-size: 0.65rem;
  transition: transform 0.3s ease;
  color: var(--text-muted);
}

/* Desktop: chevron rotate saat hover */
.nav-menu > li:hover .dropdown-icon {
  transform: rotate(180deg);
}

/* Mobile: chevron rotate saat diklik (class 'rotate' ditambah lewat JS) */
.dropdown-toggle.rotate .dropdown-icon {
  transform: rotate(180deg);
}

.nav-menu > li > a:hover,
.nav-menu > li.active > a {
  color: var(--hmti-dark);
}

/* Dropdown (Desktop) */
.dropdown-menu {
  position: absolute;
  top: 100%;
  left: 0;
  background: var(--hmti-white);
  min-width: 220px;
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.12);
  border-radius: 8px;
  padding: 8px 0;
  margin: 0;
  list-style: none; /* hilangkan bullet lingkaran di item sub menu */
  opacity: 0;
  visibility: hidden;
  transform: translateY(8px);
  transition: all 0.25s ease;
}

.nav-menu > li:hover .dropdown-menu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.dropdown-menu li a {
  display: block;
  padding: 10px 18px;
  color: var(--hmti-text);
  transition: background 0.2s ease;
}

.dropdown-menu li a:hover {
  background-color: var(--hmti-bg);
  color: var(--hmti-dark);
}

/* Header Actions (theme toggle + hamburger) */
.header-actions {
  display: flex;
  align-items: center;
  gap: 10px;
}

/* Hamburger Icon (Mobile) */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 6px;
}

.hamburger span {
  width: 26px;
  height: 3px;
  background-color: var(--hmti-dark);
  border-radius: 2px;
  transition: all 0.3s ease;
}

.hamburger.active span:nth-child(1) {
  transform: translateY(8px) rotate(45deg);
}
.hamburger.active span:nth-child(2) {
  opacity: 0;
}
.hamburger.active span:nth-child(3) {
  transform: translateY(-8px) rotate(-45deg);
}

/* ==========================================
   THEME TOGGLE BUTTON
   ========================================== */
.theme-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: none;
  border: 2px solid var(--border-color);
  color: var(--hmti-text);
  cursor: pointer;
  font-size: 1.05rem;
  transition: all 0.3s ease;
  flex-shrink: 0;
}

.theme-toggle:hover {
  border-color: var(--hmti-dark);
  background-color: var(--hmti-bg);
  transform: rotate(15deg);
}

.theme-toggle .fa-sun {
  display: none;
}
.theme-toggle .fa-moon {
  display: inline-block;
}

[data-theme="dark"] .theme-toggle .fa-sun {
  display: inline-block;
}
[data-theme="dark"] .theme-toggle .fa-moon {
  display: none;
}

/* Toggle tema di dalam menu navigasi:
   DISEMBUNYIKAN, cukup satu tombol (#themeToggle) untuk semua ukuran layar,
   supaya tidak ada duplikasi tombol mode gelap */
.nav-mobile-theme {
  display: none;
}

/* ==========================================
   FOOTER
   ========================================== */
.site-footer {
  background-color: var(--hmti-dark);
  color: var(--hmti-white);
  padding: 50px 20px 20px;
  margin-top: 60px;
}

.footer-container {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 30px;
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 10px;
}

.footer-brand img {
  height: 36px;
  width: 36px;
}

.footer-brand span {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1.1rem;
}

.footer-tagline {
  color: var(--hmti-light);
  font-size: 0.9rem;
}

.footer-col h4 {
  margin-bottom: 14px;
  font-size: 1rem;
}

.footer-col ul {
  list-style: none;
}

.footer-col ul li {
  margin-bottom: 8px;
}

.footer-col ul li a:hover {
  color: var(--hmti-light);
}

.footer-social {
  display: flex;
  gap: 14px;
  margin-top: 10px;
}

.footer-social a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  border-radius: 50%;
  background-color: rgba(255, 255, 255, 0.1);
  transition: all 0.25s ease;
}

.footer-social a i {
  font-size: 1.1rem;
  color: var(--hmti-white);
}

.footer-social a:hover {
  background-color: var(--hmti-light);
}

.footer-social a:hover i {
  color: var(--hmti-dark);
}

.footer-bottom {
  text-align: center;
  margin-top: 40px;
  padding-top: 20px;
  border-top: 1px solid rgba(255, 255, 255, 0.15);
  font-size: 0.85rem;
  color: var(--hmti-light);
}

/* ==========================================
   LAYOUT UTILITY (global - dipakai di SEMUA halaman)
   ========================================== */
.section {
  max-width: 1200px;
  margin: 0 auto;
  padding: 70px 20px;
}

.section-heading {
  text-align: center;
  margin-bottom: 45px;
}

.section-heading span {
  color: var(--hmti-dark);
  font-weight: 600;
  letter-spacing: 1px;
  font-size: 0.9rem;
  text-transform: uppercase;
}

.section-heading h2 {
  font-size: clamp(1.5rem, 3vw, 2rem);
  margin-top: 8px;
}

/* ==========================================
   KOMPONEN KEGIATAN CARD (global - dipakai di Beranda & halaman Kegiatan)
   ========================================== */
.kegiatan-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 26px;
}

.kegiatan-card {
  background: var(--card-bg);
  border-radius: 14px;
  overflow: hidden;
  box-shadow: 0 4px 14px var(--card-shadow);
  transition:
    transform 0.3s ease,
    box-shadow 0.3s ease;
}

.kegiatan-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 14px 28px var(--card-hover-shadow);
}

.kegiatan-card img {
  width: 100%;
  height: 180px;
  object-fit: cover;
}

.kegiatan-card-body {
  padding: 20px;
}

.kegiatan-card-body .tanggal {
  font-size: 0.8rem;
  color: var(--hmti-dark);
  font-weight: 600;
  margin-bottom: 8px;
  display: block;
}

.kegiatan-card-body h3 {
  font-size: 1.05rem;
  margin-bottom: 10px;
  line-height: 1.4;
}

.kegiatan-card-body p {
  font-size: 0.9rem;
  color: var(--text-secondary);
}

.empty-state {
  text-align: center;
  color: var(--text-muted);
  padding: 30px;
  font-style: italic;
}

/* ==========================================
   KOMPONEN BUTTON & ALERT (global - dipakai di Kontak, Login, dll)
   ========================================== */
.btn-cta {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background-color: var(--hmti-dark);
  color: #fff;
  font-weight: 700;
  padding: 16px 32px;
  border-radius: 8px;
  font-size: 1rem;
  border: none;
  cursor: pointer;
  transition: all 0.25s ease;
}

.btn-cta:hover {
  background-color: var(--hmti-light);
  color: var(--hmti-dark);
  transform: translateY(-3px);
}

.btn-cta.full-width {
  width: 100%;
  justify-content: center;
}

.alert {
  padding: 14px 18px;
  border-radius: 8px;
  margin-bottom: 24px;
  font-size: 0.9rem;
  display: flex;
  align-items: center;
  gap: 10px;
  text-align: left;
}

.alert-success {
  background-color: var(--success-bg);
  color: var(--success-color);
  border-left: 4px solid var(--success-color);
}

.alert-error {
  background-color: var(--danger-bg);
  color: var(--danger-color);
  border-left: 4px solid var(--danger-color);
}

/* ==========================================
   PAGE BANNER (reusable - dipakai di semua sub-halaman)
   ========================================== */
.page-banner {
  background: linear-gradient(135deg, var(--hmti-dark), #4a505a);
  color: var(--footer-text);
  text-align: center;
  padding: 60px 20px 50px;
}

.page-banner span {
  color: var(--hmti-light);
  font-weight: 600;
  letter-spacing: 2px;
  font-size: 0.85rem;
  text-transform: uppercase;
}

.page-banner h1 {
  font-size: clamp(1.6rem, 3.5vw, 2.4rem);
  margin-top: 10px;
}

.page-banner .breadcrumb {
  margin-top: 12px;
  font-size: 0.85rem;
  color: var(--text-muted);
}

.page-banner .breadcrumb a {
  color: #fff;
  font-weight: 600;
}
@media (max-width: 860px) {
  .nav-menu {
    position: fixed;
    top: 65px;
    right: -100%;
    flex-direction: column;
    align-items: flex-start;
    background: var(--nav-bg);
    width: 280px;
    height: calc(100vh - 65px);
    padding: 20px;
    gap: 4px;
    box-shadow: -4px 0 20px rgba(0, 0, 0, 0.15);
    transition: right 0.35s ease;
    overflow-y: auto;
  }

  .nav-menu.active {
    right: 0;
  }

  .nav-menu > li {
    width: 100%;
  }

  .dropdown-menu {
    position: static;
    opacity: 1;
    visibility: visible;
    transform: none;
    box-shadow: none;
    display: none;
    padding-left: 16px;
    margin-left: 4px;
    border-left: 2px solid var(--hmti-light);
    transition: none;
  }

  .dropdown-menu.open {
    display: block;
  }

  .hamburger {
    display: flex;
  }

  /* Mobile theme toggle di dalam menu, tetap disembunyikan (pakai #themeToggle saja) */
  .nav-mobile-theme {
    display: none;
    padding: 8px 0;
    border-bottom: 1px solid var(--border-color);
    margin-bottom: 8px;
    width: 100%;
  }

  .nav-mobile-theme a {
    display: flex !important;
    align-items: center;
    gap: 10px;
    font-weight: 500;
    font-size: 0.95rem;
    color: var(--hmti-text);
    padding: 10px 0;
  }

  .nav-mobile-theme a i {
    font-size: 1rem;
    width: 20px;
    text-align: center;
  }

  .nav-mobile-theme a .fa-sun {
    display: none;
  }
  .nav-mobile-theme a .fa-moon {
    display: inline-block;
  }

  [data-theme="dark"] .nav-mobile-theme a .fa-sun {
    display: inline-block;
  }
  [data-theme="dark"] .nav-mobile-theme a .fa-moon {
    display: none;
  }

  .nav-mobile-theme .theme-label {
    font-size: 0.9rem;
  }
}

/* ==========================================
   MOBILE RESPONSIVE IMPROVEMENTS
   ========================================== */

/* Tablet & small laptop */
@media (max-width: 1024px) {
  .section {
    padding: 50px 20px;
  }

  .page-banner {
    padding: 50px 20px 40px;
  }

  .admin-content {
    padding: 20px;
  }

  .admin-form .form-row {
    grid-template-columns: 1fr;
  }
}

/* Smartphone */
@media (max-width: 600px) {
  .section {
    padding: 40px 16px;
  }

  .header-container {
    padding: 10px 16px;
  }

  .brand img {
    height: 34px;
    width: 34px;
  }

  .brand span {
    font-size: 1.1rem;
  }

  .page-banner {
    padding: 40px 16px 32px;
  }

  .hero-content h1 {
    font-size: 1.6rem;
  }

  .hero-content p {
    font-size: 0.9rem;
  }

  .btn-hero,
  .btn-cta {
    padding: 12px 22px;
    font-size: 0.9rem;
  }

  .kegiatan-grid {
    grid-template-columns: 1fr;
    gap: 18px;
  }

  .galeri-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
  }

  .galeri-item img {
    height: 140px;
  }

  .departemen-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 14px;
  }

  .departemen-card {
    padding: 24px 12px;
  }

  .departemen-card i {
    font-size: 1.4rem;
  }

  .departemen-card h4 {
    font-size: 0.85rem;
  }

  .footer-container {
    grid-template-columns: 1fr;
    gap: 24px;
    text-align: center;
  }

  .footer-brand {
    justify-content: center;
  }

  .footer-social {
    justify-content: center;
  }

  .kontak-info-grid {
    grid-template-columns: 1fr;
  }

  .site-footer {
    padding: 40px 16px 16px;
  }

  .page-banner h1 {
    font-size: 1.4rem;
  }

  .section-heading h2 {
    font-size: 1.3rem;
  }

  .section-heading {
    margin-bottom: 30px;
  }

  .admin-content {
    padding: 16px;
  }

  .admin-topbar {
    padding: 12px 16px;
  }

  .stat-grid {
    grid-template-columns: 1fr;
  }

  .quick-actions-grid {
    grid-template-columns: 1fr;
  }

  .admin-form {
    padding: 24px 20px;
  }

  .admin-table-wrapper {
    border-radius: 10px;
  }

  .admin-table th,
  .admin-table td {
    padding: 10px 12px;
    font-size: 0.8rem;
  }

  .auth-card {
    padding: 32px 24px;
  }

  .misi-grid {
    gap: 12px;
  }
}

/* Very small screens */
@media (max-width: 400px) {
  .brand span {
    display: none;
  }

  .galeri-grid {
    grid-template-columns: 1fr 1fr;
    gap: 8px;
  }

  .galeri-item img {
    height: 120px;
  }

  .departemen-grid {
    grid-template-columns: 1fr 1fr;
    gap: 10px;
  }

  .nav-menu {
    width: 100%;
    right: -100%;
  }

  .auth-card {
    padding: 24px 18px;
  }
}

/* ==========================================
   INTERAKSI & ANIMASI (Interactive UI)
   ========================================== */

/* Smooth scroll (nonaktif otomatis jika user meminta reduced motion) */
html {
  scroll-behavior: smooth;
}

/* ---------- SCROLL REVEAL ---------- */
/* Element baru tampil halus saat masuk viewport (dikelola oleh main.js) */
.js .reveal {
  opacity: 0;
  transform: translateY(28px);
  transition:
    opacity 0.7s ease,
    transform 0.7s ease;
  will-change: opacity, transform;
}

.js .reveal.in-view {
  opacity: 1;
  transform: none;
}

/* Variasi arah (opsional, dipakai manual) */
.js .reveal-left {
  transform: translateX(-40px);
}
.js .reveal-right {
  transform: translateX(40px);
}
.js .reveal-zoom {
  transform: scale(0.92);
}

/* ---------- HEADER STICKY (menyusut saat di-scroll) ---------- */
.site-header {
  transition: box-shadow 0.3s ease;
}

.site-header.scrolled {
  box-shadow: 0 6px 22px var(--header-shadow);
}

.site-header.scrolled .header-container {
  padding-top: 8px;
  padding-bottom: 8px;
}

.site-header.scrolled .brand img {
  height: 34px;
  width: 34px;
}

/* ---------- SECTION HEADING: garis coretan tangan ---------- */
/* SVG coretan digambar otomatis (stroke-dashoffset) saat heading terlihat,
   memberi kesan "digambar tangan" daripada garis template biasa */
.section-heading .scribble {
  display: block;
  width: 112px;
  height: 12px;
  margin: 12px auto 0;
  color: var(--hmti-dark);
}

.section-heading .scribble path {
  fill: none;
  stroke: currentColor;
  stroke-width: 2.6;
  stroke-linecap: round;
  stroke-dasharray: 300;
  stroke-dashoffset: 300;
  transition: stroke-dashoffset 1.1s ease;
}

.js .section-heading.in-view .scribble path {
  stroke-dashoffset: 0;
}

/* ---------- KEGIATAN CARD: zoom gambar saat hover ---------- */
.kegiatan-card img {
  transition: transform 0.5s ease;
}

.kegiatan-card:hover img {
  transform: scale(1.07);
}

/* ---------- TOMBOL: panah bergeser + ripple ---------- */
.btn-cta i,
.btn-hero i,
.btn-back i {
  transition: transform 0.3s ease;
}

.btn-cta:hover i,
.btn-hero:hover i {
  transform: translateX(5px);
}

.btn-back:hover i {
  transform: translateX(-5px);
}

.btn-cta,
.btn-hero,
.btn-back {
  position: relative;
  overflow: hidden;
}

.ripple {
  position: absolute;
  border-radius: 50%;
  background-color: rgba(255, 255, 255, 0.45);
  transform: scale(0);
  animation: ripple 0.6s ease-out forwards;
  pointer-events: none;
}

@keyframes ripple {
  to {
    transform: scale(1);
    opacity: 0;
  }
}

/* ---------- BACK TO TOP ---------- */
.back-to-top {
  position: fixed;
  right: 22px;
  bottom: 22px;
  width: 46px;
  height: 46px;
  border-radius: 12px;
  border: none;
  background-color: var(--hmti-dark);
  color: #fff;
  font-size: 1.05rem;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transform: translateY(12px);
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.25);
  transition: all 0.3s ease;
  z-index: 1200;
}

.back-to-top.visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.back-to-top:hover {
  background-color: var(--hmti-light);
  color: var(--hmti-dark);
  transform: translateY(-3px);
}

/* ---------- REDUCED MOTION: matikan semua animasi ---------- */
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  .js .reveal,
  .js .reveal-left,
  .js .reveal-right,
  .js .reveal-zoom {
    opacity: 1 !important;
    transform: none !important;
    transition: none !important;
  }

  .wave-hand,
  .confetti-piece,
  .click-sparkle,
  .btt-rocket,
  .nf-astro,
  .nf-ship,
  .nf-star {
    animation: none !important;
  }

  .brand img {
    animation: none !important;
  }

  .section-heading .scribble path {
    transition: none;
    stroke-dashoffset: 0;
  }
}

/* ==========================================
   FITUR INTERAKTIF
   ========================================== */

/* Bilah progres scroll (di atas halaman) */
.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  height: 3px;
  width: 0%;
  background: linear-gradient(90deg, var(--hmti-dark), var(--hmti-light));
  border-radius: 0 3px 3px 0;
  z-index: 1500;
  pointer-events: none;
  box-shadow: 0 0 8px rgba(93, 100, 112, 0.4);
}

/* Sapaan hero + tangan melambai */
.hero-greeting {
  font-weight: 600;
  color: #fff;
}

.wave-hand {
  display: inline-block;
  transform-origin: 70% 70%;
  animation: waveHand 2.6s ease-in-out infinite;
}

@keyframes waveHand {
  0%,
  60%,
  100% {
    transform: rotate(0);
  }
  10% {
    transform: rotate(18deg);
  }
  20% {
    transform: rotate(-8deg);
  }
  30% {
    transform: rotate(16deg);
  }
  40% {
    transform: rotate(-4deg);
  }
  50% {
    transform: rotate(10deg);
  }
}

/* Konfeti (easter egg: ketik "hmti") */
.confetti-piece {
  position: fixed;
  top: -20px;
  z-index: 1600;
  pointer-events: none;
  border-radius: 2px;
  opacity: 0.95;
  animation-name: konfetiFall;
  animation-timing-function: linear;
  animation-fill-mode: forwards;
}

@keyframes konfetiFall {
  0% {
    transform: translate3d(0, -10px, 0) rotate(0deg);
    opacity: 1;
  }
  100% {
    transform: translate3d(var(--drift, 0px), 105vh, 0) rotate(var(--spin, 360deg));
    opacity: 0.55;
  }
}

/* Toast kecil (selamat datang / easter egg) */
.site-toast {
  position: fixed;
  left: 50%;
  bottom: 28px;
  transform: translate(-50%, 20px);
  background: var(--hmti-dark);
  color: #fff;
  padding: 12px 22px;
  border-radius: 30px;
  font-size: 0.92rem;
  box-shadow: 0 10px 26px rgba(0, 0, 0, 0.25);
  opacity: 0;
  visibility: hidden;
  transition: all 0.35s ease;
  z-index: 1700;
  max-width: 90vw;
  text-align: center;
}

.site-toast.show {
  opacity: 1;
  visibility: visible;
  transform: translate(-50%, 0);
}

[data-theme="dark"] .site-toast {
  background: var(--hmti-light);
  color: var(--hmti-dark);
}

/* Kartu lucu: miring tipis saat hover + "mentok" saat tombol ditekan */
.kegiatan-card:hover {
  transform: translateY(-6px) rotate(-0.6deg);
}

.departemen-card:hover {
  transform: translateY(-6px) rotate(0.6deg);
}

.btn-hero:active,
.btn-hero-outline:active,
.btn-cta:active,
.btn-back:active {
  transform: scale(0.96);
}

/* Reveal dengan sedikit "pop" (overshoot halus, kesan luwes) */
.js .reveal.in-view {
  transition:
    opacity 0.6s ease,
    transform 0.6s cubic-bezier(0.34, 1.4, 0.64, 1);
}

/* Back-to-top dengan cincin progres */
.back-to-top {
  overflow: hidden;
}

.back-to-top i {
  position: relative;
  z-index: 2;
}

.btt-ring {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  transform: rotate(-90deg);
}

.btt-ring circle {
  fill: none;
  stroke-width: 3;
  stroke-linecap: round;
}

.btt-ring-bg {
  stroke: rgba(255, 255, 255, 0.25);
}

.btt-ring-fg {
  stroke: currentColor;
  stroke-dasharray: 125.6;
  stroke-dashoffset: 125.6;
}

[data-theme="dark"] .btt-ring-bg {
  stroke: rgba(0, 0, 0, 0.3);
}

/* Sparkle saat klik (sentuhan lucu) */
.click-sparkle {
  position: fixed;
  z-index: 1700;
  pointer-events: none;
  font-size: 1rem;
  transform: translate(-50%, -50%);
  animation: sparkleFly 0.6s ease-out forwards;
}

@keyframes sparkleFly {
  0% {
    opacity: 0;
    transform: translate(-50%, -50%) scale(0.3);
  }
  20% {
    opacity: 1;
  }
  100% {
    opacity: 0;
    transform: translate(calc(-50% + var(--sx)), calc(-50% + var(--sy))) scale(1);
  }
}

/* Roket kecil saat kembali ke atas */
.btt-rocket {
  position: fixed;
  z-index: 1700;
  font-size: 1.6rem;
  pointer-events: none;
  transform: translate(-50%, -50%);
  animation: rocketFly 0.8s ease-in forwards;
}

@keyframes rocketFly {
  0% {
    opacity: 1;
  }
  100% {
    opacity: 0;
    transform: translate(-50%, calc(-50% - 92vh)) rotate(-10deg);
  }
}

/* Jam digital footer */
.footer-clock {
  display: block;
  margin-top: 6px;
  font-size: 0.8rem;
  color: var(--hmti-light);
  font-variant-numeric: tabular-nums;
}

/* ==========================================
   HALAMAN 404 (lucu & ramah)
   ========================================== */
.notfound {
  text-align: center;
  padding: 90px 20px 120px;
  max-width: 640px;
  margin: 0 auto;
}

.notfound-scene {
  position: relative;
  height: 150px;
  margin-bottom: 20px;
}

.nf-astro {
  position: absolute;
  left: 50%;
  top: 20px;
  transform: translateX(-50%);
  font-size: 5rem;
  animation: nfFloat 3s ease-in-out infinite;
}

.nf-ship {
  position: absolute;
  right: 10%;
  top: 6px;
  font-size: 2.2rem;
  animation: nfShip 4s ease-in-out infinite;
}

.nf-star {
  position: absolute;
  color: var(--hmti-dark);
  font-size: 1.2rem;
  animation: nfTwinkle 2.4s ease-in-out infinite;
  animation-delay: var(--d, 0s);
}

.nf-star:nth-child(1) {
  left: 12%;
  top: 30px;
}
.nf-star:nth-child(2) {
  left: 30%;
  top: 95px;
}
.nf-star:nth-child(3) {
  right: 24%;
  top: 72px;
}

@keyframes nfFloat {
  0%,
  100% {
    transform: translateX(-50%) translateY(0);
  }
  50% {
    transform: translateX(-50%) translateY(-18px);
  }
}

@keyframes nfShip {
  0%,
  100% {
    transform: translate(0, 0) rotate(-6deg);
  }
  50% {
    transform: translate(-14px, -16px) rotate(8deg);
  }
}

@keyframes nfTwinkle {
  0%,
  100% {
    opacity: 0.2;
  }
  50% {
    opacity: 1;
  }
}

.nf-title {
  font-size: clamp(1.6rem, 4vw, 2.2rem);
  margin-bottom: 14px;
}

.nf-desc {
  color: var(--text-secondary);
  max-width: 480px;
  margin: 0 auto 32px;
  line-height: 1.7;
}

.notfound-actions {
  display: flex;
  gap: 14px;
  justify-content: center;
  flex-wrap: wrap;
}

/* Tombol outline generik (dipakai di 404, dll.) */
.btn-ghost {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 16px 28px;
  border-radius: 8px;
  font-weight: 700;
  font-size: 1rem;
  border: 2px solid var(--hmti-dark);
  color: var(--hmti-dark);
  transition: all 0.25s ease;
}

.btn-ghost:hover {
  background-color: var(--hmti-dark);
  color: #fff;
  transform: translateY(-3px);
}

/* ==========================================
   POLESAN "BUATAN TANGAN" (polish halus)
   ========================================== */

/* Pilihan teks berwarna khas */
::selection {
  background: var(--hmti-light);
  color: var(--hmti-dark);
}

/* Scrollbar halus (WebKit/Chromium) */
::-webkit-scrollbar {
  width: 10px;
}
::-webkit-scrollbar-track {
  background: var(--hmti-bg);
}
::-webkit-scrollbar-thumb {
  background: var(--hmti-light);
  border-radius: 8px;
  border: 2px solid var(--hmti-bg);
}
::-webkit-scrollbar-thumb:hover {
  background: var(--hmti-dark);
}

/* Garis fokus jelas untuk navigasi keyboard (aksesibel) */
:focus-visible {
  outline: 3px solid var(--hmti-dark);
  outline-offset: 2px;
  border-radius: 4px;
}

/* Logo: "pop" saat halaman dimuat + goyang halus saat hover */
.brand img {
  animation: logoPop 0.5s ease-out;
}

@keyframes logoPop {
  0% {
    transform: scale(0.6);
    opacity: 0;
  }
  70% {
    transform: scale(1.08);
  }
  100% {
    transform: scale(1);
    opacity: 1;
  }
}

.brand:hover img {
  animation: logoWiggle 0.5s ease;
}

@keyframes logoWiggle {
  0%,
  100% {
    transform: rotate(0);
  }
  25% {
    transform: rotate(-9deg);
  }
  75% {
    transform: rotate(9deg);
  }
}

/* Tilt 3D halus pada kartu (dikelola main.js) */
.tilt-card.kegiatan-card:hover,
.tilt-card.departemen-card:hover {
  transform: perspective(900px) rotateX(var(--rx, 0deg)) rotateY(var(--ry, 0deg)) translateY(-6px);
  transition: transform 0.15s ease-out;
}

/* Ikon sosial footer: goyang lucu saat hover */
.footer-social a {
  transition:
    transform 0.25s ease,
    background-color 0.25s ease;
}

.footer-social a:hover {
  transform: translateY(-4px) rotate(-8deg) scale(1.08);
}