:root {
  --bg: #f5f7ff;
  --surface: #ffffff;
  --surface-2: #f8fbff;
  --text: #081120;
  --muted: #647082;
  --accent: #6c8cff;
  --accent-2: #4ad7b5;
  --border: rgba(8, 17, 32, 0.08);
  --shadow: 0 20px 45px rgba(8, 17, 32, 0.08);
  --navbar-bg: rgba(255, 255, 255, 0.72);
  --hero-bg: linear-gradient(135deg, #132445 0%, #4c5dff 100%);
}

body.dark-theme {
  --bg: #060b14;
  --surface: #0f1726;
  --surface-2: #141d2e;
  --text: #f7f9ff;
  --muted: #95a0b8;
  --border: rgba(255, 255, 255, 0.1);
  --shadow: 0 20px 50px rgba(0, 0, 0, 0.28);
  --navbar-bg: rgba(8, 17, 32, 0.78);
  --hero-bg: linear-gradient(135deg, #0c1326 0%, #1d2f5a 100%);
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Poppins', sans-serif;
  color: var(--text);
  background: radial-gradient(circle at top left, rgba(108, 140, 255, 0.14), transparent 25%), linear-gradient(135deg, var(--bg), var(--surface-2));
  transition: background-color 0.35s ease, color 0.35s ease;
}

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

.text-accent {
  color: var(--accent-2);
}

.navbar-glass {
  background: var(--navbar-bg);
  border-bottom: 1px solid var(--border);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
}

.navbar-brand,
.nav-link,
.navbar-toggler {
  color: var(--text) !important;
}

.navbar-brand {
  letter-spacing: 0.04em;
  font-family: 'Poppins', sans-serif;
  text-transform: uppercase;
  font-size: 1.15rem;
  background: linear-gradient(90deg, var(--accent), #7c5cff 45%, var(--accent-2));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.nav-link {
  font-weight: 500;
  transition: color 0.25s ease, transform 0.25s ease;
  position: relative;
}

.nav-link:hover,
.nav-link.active {
  color: var(--accent-2) !important;
  transform: translateY(-1px);
}

.dropdown-menu {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 1rem;
  box-shadow: var(--shadow);
}

.dropdown-item {
  color: var(--text);
  border-radius: 0.7rem;
  transition: background-color 0.2s ease, color 0.2s ease;
}

.dropdown-item:hover {
  background: rgba(108, 140, 255, 0.14);
  color: var(--accent);
}

.mega-menu {
  min-width: 280px;
}

.search-shell {
  position: relative;
  display: flex;
  align-items: center;
  width: 42px;
  height: 42px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.08);
  overflow: hidden;
  transition: width 0.35s ease, background-color 0.35s ease;
}

.search-shell:focus-within {
  width: 220px;
  background: rgba(108, 140, 255, 0.14);
}

.search-btn {
  border: 0;
  width: 42px;
  height: 42px;
  background: transparent;
  color: var(--text);
}

.search-input {
  width: 100%;
  border: 0;
  outline: 0;
  background: transparent;
  color: var(--text);
  padding-right: 0.7rem;
}

.search-input::placeholder {
  color: var(--muted);
}

.theme-toggle {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  border: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.08);
  color: var(--text);
  display: grid;
  place-items: center;
  transition: transform 0.25s ease, background 0.25s ease;
}

.theme-toggle:hover {
  transform: rotate(12deg) scale(1.04);
}

.mobile-nav-overlay {
  position: fixed;
  inset: 0;
  background: rgba(4, 8, 20, 0.48);
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s ease, visibility 0.3s ease;
  z-index: 1040;
}

.mobile-nav-overlay.active {
  opacity: 1;
  visibility: visible;
}

.mobile-nav-panel {
  position: fixed;
  top: 0;
  right: 0;
  width: min(92vw, 320px);
  height: 100vh;
  padding: 1.2rem 1rem 1.5rem;
  background: var(--surface);
  border-left: 1px solid var(--border);
  box-shadow: var(--shadow);
  transform: translateX(100%);
  transition: transform 0.35s ease;
  z-index: 1050;
  overflow-y: auto;
}

.mobile-nav-panel.open {
  transform: translateX(0);
}

.mobile-nav-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1rem;
}

.mobile-nav-close {
  border: 0;
  background: transparent;
  color: var(--text);
  font-size: 1.5rem;
  line-height: 1;
}

.mobile-search {
  margin-bottom: 1rem;
}

.mobile-search .search-input {
  width: 100%;
  padding: 0.8rem 0.95rem;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.08);
}

.mobile-nav-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 0.3rem;
}

.mobile-nav-list a,
.mobile-nav-group span {
  display: block;
  color: var(--text);
  text-decoration: none;
  padding: 0.75rem 0.85rem;
  border-radius: 0.8rem;
}

.mobile-nav-list a:hover {
  background: rgba(108, 140, 255, 0.14);
  color: var(--accent);
}

.mobile-nav-group {
  display: grid;
  gap: 0.2rem;
  padding-top: 0.3rem;
}

.mobile-nav-group span {
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.16em;
  color: var(--accent-2);
  font-weight: 700;
}

body.mobile-nav-open {
  overflow: hidden;
}

.hero-section {
  padding-top: 2rem;
}

.hero-card {
  background: var(--hero-bg);
  min-height: 420px;
  position: relative;
  overflow: hidden;
}

.hero-card::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(120deg, transparent 0%, rgba(255,255,255,0.12) 100%);
  pointer-events: none;
}

.hero-thumb {
  height: 180px;
  object-fit: cover;
}

.section-label {
  color: var(--accent-2);
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  font-size: 0.78rem;
}

.section-title {
  font-size: clamp(1.5rem, 2.3vw, 2rem);
  font-weight: 700;
}

.card {
  background: var(--surface);
  color: var(--text);
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}

.card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow);
}

.img-hover-wrap {
  overflow: hidden;
  position: relative;
}

.img-hover-wrap::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(0,0,0,0.08) 0%, rgba(0,0,0,0.25) 100%);
  opacity: 0;
  transition: opacity 0.35s ease;
  pointer-events: none;
}

.post-card .card img {
  transition: transform 0.5s ease;
  min-height: 220px;
  object-fit: cover;
}

.post-card:hover .card img {
  transform: scale(1.08);
}

.post-card:hover .img-hover-wrap::after {
  opacity: 1;
}

.meta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem 0.7rem;
  color: var(--muted);
  font-size: 0.88rem;
}

.avatar {
  width: 46px;
  height: 46px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: white;
  font-weight: 700;
}

.ad-banner {
  background: linear-gradient(135deg, rgba(108, 140, 255, 0.18), rgba(74, 215, 181, 0.16));
}

.accordion-item {
  background: var(--surface);
  border-color: var(--border);
}

.accordion-button {
  background: var(--surface);
  color: var(--text);
}

.accordion-button:not(.collapsed) {
  background: var(--surface-2);
  color: var(--text);
  box-shadow: none;
}

.footer {
  background: #040814;
  color: #f2f6ff;
}

.footer h4,
.footer h5 {
  font-weight: 600;
  letter-spacing: 0.02em;
}

.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

@media (max-width: 991px) {
  .mega-menu {
    min-width: 100%;
  }
}

@media (max-width: 767px) {
  .hero-card {
    min-height: 360px;
  }

  .search-form .form-control {
    min-width: 100%;
  }
}