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

:root {
  --bg:          #0d0f14;
  --bg2:         #13161e;
  --bg3:         #191d27;
  --surface:     #1e2230;
  --surface2:    #252a38;
  --green:       #a3e635;
  --green-glow:  rgba(163, 230, 53, 0.18);
  --green-dim:   rgba(163, 230, 53, 0.08);
  --text:        #eef0f6;
  --text-muted:  #7a8099;
  --text-soft:   #b0b7cc;
  --border:      rgba(255,255,255,0.07);
  --border-green:rgba(163,230,53,0.25);
  --radius:      14px;
  --radius-sm:   8px;
  --radius-lg:   22px;
  --shadow:      0 4px 40px rgba(0,0,0,0.45);
  --transition:  0.28s cubic-bezier(.4,0,.2,1);
  --font-head:   'Syne', sans-serif;
  --font-body:   'DM Sans', sans-serif;
}

html { scroll-behavior: smooth; font-size: 16px; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  line-height: 1.6;
  overflow-x: hidden;
  min-height: 100vh;
}

a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
sup { font-size: 0.5em; vertical-align: super; }

/* ---------- Background Orbs ---------- */
.bg-orb {
  position: fixed;
  border-radius: 50%;
  filter: blur(90px);
  pointer-events: none;
  z-index: 0;
  animation: orb-drift 18s ease-in-out infinite alternate;
}
.orb1 { width: 500px; height: 500px; background: rgba(163,230,53,0.06); top: -120px; left: -100px; animation-duration: 20s; }
.orb2 { width: 400px; height: 400px; background: rgba(99,102,241,0.07); top: 40%; right: -80px; animation-duration: 25s; animation-delay: -5s; }
.orb3 { width: 350px; height: 350px; background: rgba(163,230,53,0.04); bottom: 10%; left: 30%; animation-duration: 30s; animation-delay: -10s; }

@keyframes orb-drift {
  0%   { transform: translate(0, 0) scale(1); }
  100% { transform: translate(30px, 40px) scale(1.1); }
}

/* ---------- Navbar ---------- */
.navbar {
  position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
  display: flex; align-items: center; justify-content: space-between;
  padding: 0 5%;
  height: 68px;
  background: rgba(13,15,20,0.75);
  backdrop-filter: blur(18px);
  border-bottom: 1px solid var(--border);
  transition: background var(--transition);
}
.navbar.scrolled {
  background: rgba(13,15,20,0.95);
  box-shadow: 0 2px 30px rgba(0,0,0,0.6);
}

.nav-logo {
  display: flex; align-items: center; gap: 10px;
  font-family: var(--font-head);
  font-weight: 800;
  font-size: 1.15rem;
  letter-spacing: -0.3px;
}
.logo-icon { font-size: 1.3rem; }
.accent { color: var(--green); }

.nav-links {
  display: flex; align-items: center; gap: 6px;
  list-style: none;
}
.nav-link {
  padding: 7px 15px;
  border-radius: 50px;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-soft);
  transition: background var(--transition), color var(--transition);
}
.nav-link:hover {
  background: var(--surface);
  color: var(--text);
}
.nav-yt-btn {
  display: flex; align-items: center; gap: 7px;
  padding: 7px 16px;
  background: var(--green);
  color: #0d0f14;
  border-radius: 50px;
  font-size: 0.875rem;
  font-weight: 700;
  transition: opacity var(--transition), transform var(--transition);
}
.nav-yt-btn:hover { opacity: 0.88; transform: translateY(-1px); }

.hamburger { display: none; flex-direction: column; gap: 5px; cursor: pointer; background: none; border: none; padding: 4px; }
.hamburger span { width: 24px; height: 2px; background: var(--text); border-radius: 2px; transition: var(--transition); display: block; }

/* ---------- Hero ---------- */
.hero {
  position: relative; z-index: 1;
  min-height: 100vh;
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  text-align: center;
  padding: 120px 5% 80px;
  background:
    radial-gradient(ellipse 70% 50% at 50% 0%, rgba(163,230,53,0.1) 0%, transparent 70%),
    var(--bg);
}

.hero-badge {
  display: inline-block;
  padding: 6px 18px;
  background: var(--green-dim);
  border: 1px solid var(--border-green);
  border-radius: 50px;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--green);
  letter-spacing: 0.5px;
  margin-bottom: 28px;
  animation: fade-up 0.6s ease both;
}

.hero-title {
  font-family: var(--font-head);
  font-size: clamp(2.8rem, 7vw, 5.5rem);
  font-weight: 800;
  line-height: 1.08;
  letter-spacing: -2px;
  margin-bottom: 22px;
  animation: fade-up 0.7s 0.1s ease both;
}
.hero-highlight {
  color: var(--green);
  position: relative;
  display: inline-block;
}
.hero-highlight::after {
  content: '';
  position: absolute;
  bottom: -4px; left: 0; right: 0;
  height: 3px;
  background: var(--green);
  border-radius: 3px;
  opacity: 0.5;
}

.hero-sub {
  max-width: 520px;
  font-size: 1.05rem;
  color: var(--text-muted);
  margin-bottom: 40px;
  animation: fade-up 0.7s 0.2s ease both;
}
.hero-sub strong { color: var(--text-soft); }

.hero-stats {
  display: flex; align-items: center; gap: 0;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 50px;
  padding: 10px 6px;
  margin-bottom: 36px;
  animation: fade-up 0.7s 0.3s ease both;
}
.stat { display: flex; flex-direction: column; align-items: center; padding: 4px 28px; }
.stat-num { font-family: var(--font-head); font-size: 1.5rem; font-weight: 800; color: var(--green); line-height: 1; }
.stat-label { font-size: 0.72rem; color: var(--text-muted); text-transform: uppercase; letter-spacing: 0.8px; margin-top: 2px; }
.stat-divider { width: 1px; height: 36px; background: var(--border); }

.hero-btns {
  display: flex; gap: 12px; flex-wrap: wrap; justify-content: center;
  animation: fade-up 0.7s 0.4s ease both;
}

.btn {
  padding: 13px 30px;
  border-radius: 50px;
  font-family: var(--font-head);
  font-size: 0.92rem;
  font-weight: 700;
  cursor: pointer;
  transition: transform var(--transition), box-shadow var(--transition), opacity var(--transition);
  display: inline-block;
}
.btn:hover { transform: translateY(-2px); }
.btn-primary {
  background: var(--green);
  color: #0d0f14;
  box-shadow: 0 4px 24px rgba(163,230,53,0.3);
}
.btn-primary:hover { box-shadow: 0 6px 32px rgba(163,230,53,0.45); }
.btn-outline {
  border: 1px solid var(--border);
  color: var(--text-soft);
  background: var(--surface);
}
.btn-outline:hover { border-color: var(--border-green); color: var(--green); }

.hero-scroll-hint {
  position: absolute; bottom: 32px; left: 50%; transform: translateX(-50%);
  display: flex; flex-direction: column; align-items: center; gap: 8px;
  color: var(--text-muted); font-size: 0.75rem;
  animation: fade-up 1s 1s ease both;
}
.scroll-arrow {
  width: 22px; height: 22px;
  border-right: 2px solid var(--text-muted);
  border-bottom: 2px solid var(--text-muted);
  transform: rotate(45deg);
  animation: bounce-down 1.5s ease-in-out infinite;
}
@keyframes bounce-down {
  0%,100% { transform: rotate(45deg) translateY(0); }
  50%      { transform: rotate(45deg) translateY(5px); }
}

/* ---------- Year Cards ---------- */
.year-cards {
  position: relative; z-index: 1;
  padding: 80px 5%;
  background: var(--bg2);
}

.section-label {
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 2px;
  color: var(--green);
  margin-bottom: 10px;
}

.cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 20px;
  margin-top: 32px;
}

.year-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px 28px 24px;
  position: relative;
  overflow: hidden;
  transition: transform var(--transition), border-color var(--transition), box-shadow var(--transition);
  cursor: pointer;
  display: flex; flex-direction: column; gap: 18px;
}
.year-card::before {
  content: '';
  position: absolute; inset: 0;
  background: radial-gradient(circle at top left, var(--green-dim) 0%, transparent 60%);
  opacity: 0;
  transition: opacity var(--transition);
}
.year-card:hover { transform: translateY(-4px); border-color: var(--border-green); box-shadow: 0 8px 40px rgba(163,230,53,0.1); }
.year-card:hover::before { opacity: 1; }
.year-card.featured {
  border-color: var(--border-green);
  background: linear-gradient(135deg, var(--surface) 0%, rgba(163,230,53,0.05) 100%);
}

.year-card-number {
  font-family: var(--font-head);
  font-size: 4.5rem;
  font-weight: 800;
  line-height: 1;
  color: rgba(255,255,255,0.04);
  position: absolute; top: 18px; right: 24px;
  pointer-events: none;
  user-select: none;
}
.year-card.featured .year-card-number { color: rgba(163,230,53,0.1); }

.year-card-content { position: relative; z-index: 1; }
.year-card-icon { font-size: 2rem; margin-bottom: 10px; }
.year-card-content h3 {
  font-family: var(--font-head);
  font-size: 1.3rem;
  font-weight: 700;
  margin-bottom: 5px;
}
.year-card-content p { font-size: 0.88rem; color: var(--text-muted); }

.year-card-tags { display: flex; gap: 8px; margin-top: 12px; }
.year-card-tags span {
  padding: 3px 12px;
  background: var(--bg3);
  border: 1px solid var(--border);
  border-radius: 50px;
  font-size: 0.75rem;
  color: var(--text-muted);
}

.year-card-btn {
  display: inline-block;
  font-family: var(--font-head);
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--green);
  transition: gap var(--transition);
  position: relative; z-index: 1;
}
.year-card-btn:hover { opacity: 0.8; }

/* ---------- Papers Sections ---------- */
.papers-section {
  position: relative; z-index: 1;
  padding: 80px 5%;
  background: var(--bg);
}
.papers-section.alt-bg { background: var(--bg2); }

.section-header {
  margin-bottom: 48px;
}
.section-title {
  font-family: var(--font-head);
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  font-weight: 800;
  letter-spacing: -1px;
  margin-bottom: 8px;
  margin-top: 6px;
}
.section-desc { color: var(--text-muted); font-size: 0.95rem; }

.sem-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}
.sem-grid.single { grid-template-columns: 1fr; max-width: 600px; }

.sem-block {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: border-color var(--transition);
}
.sem-block:hover { border-color: rgba(255,255,255,0.12); }

.sem-header {
  display: flex; align-items: center; justify-content: space-between;
  padding: 18px 24px;
  background: var(--surface2);
  border-bottom: 1px solid var(--border);
}
.sem-badge {
  font-family: var(--font-head);
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--green);
}
.sem-count {
  font-size: 0.78rem;
  color: var(--text-muted);
  background: var(--bg3);
  padding: 3px 10px;
  border-radius: 50px;
  border: 1px solid var(--border);
}

.subject-list { list-style: none; padding: 10px 0; }

.subject-link {
  display: flex; align-items: center; gap: 12px;
  padding: 11px 24px;
  font-size: 0.9rem;
  color: var(--text-soft);
  font-weight: 400;
  transition: background var(--transition), color var(--transition), padding-left var(--transition);
  border-bottom: 1px solid var(--border);
}
.subject-link:last-child { border-bottom: none; }
.subject-link:hover {
  background: var(--green-dim);
  color: var(--text);
  padding-left: 28px;
}

.subj-icon {
  font-size: 1rem;
  width: 28px; height: 28px;
  display: flex; align-items: center; justify-content: center;
  background: var(--bg3);
  border-radius: 7px;
  flex-shrink: 0;
  transition: background var(--transition);
}
.subject-link:hover .subj-icon { background: var(--green-glow); }

/* ---------- PYQ Banner ---------- */
.pyq-banner {
  position: relative; z-index: 1;
  padding: 40px 5%;
  background: linear-gradient(135deg, var(--surface) 0%, rgba(163,230,53,0.06) 100%);
  border-top: 1px solid var(--border-green);
  border-bottom: 1px solid var(--border-green);
}
.pyq-content {
  max-width: 900px; margin: 0 auto;
  display: flex; align-items: center; gap: 24px; flex-wrap: wrap;
}
.pyq-icon { font-size: 2.8rem; flex-shrink: 0; }
.pyq-text { flex: 1; min-width: 200px; }
.pyq-text h3 {
  font-family: var(--font-head);
  font-size: 1.25rem; font-weight: 700;
  margin-bottom: 6px;
}
.pyq-text p { font-size: 0.9rem; color: var(--text-muted); }

/* ---------- About ---------- */
.about-section {
  position: relative; z-index: 1;
  padding: 100px 5%;
  background: var(--bg);
  text-align: center;
}
.about-inner { max-width: 960px; margin: 0 auto; }
.about-badge {
  display: inline-block;
  padding: 6px 18px;
  background: var(--green-dim);
  border: 1px solid var(--border-green);
  border-radius: 50px;
  font-size: 0.8rem; font-weight: 600;
  color: var(--green);
  margin-bottom: 22px;
}
.about-title {
  font-family: var(--font-head);
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  font-weight: 800;
  letter-spacing: -1px;
  margin-bottom: 48px;
  line-height: 1.15;
}

.about-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 20px;
  margin-bottom: 36px;
}
.about-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 30px 24px;
  text-align: left;
  transition: border-color var(--transition), transform var(--transition);
}
.about-card:hover { border-color: var(--border-green); transform: translateY(-3px); }
.about-icon { font-size: 1.8rem; margin-bottom: 14px; }
.about-card h4 { font-family: var(--font-head); font-size: 1rem; font-weight: 700; margin-bottom: 8px; }
.about-card p { font-size: 0.875rem; color: var(--text-muted); line-height: 1.65; }

.about-note { font-size: 0.78rem; color: var(--text-muted); font-style: italic; }

/* ---------- Charity ---------- */
.charity-section {
  position: relative; z-index: 1;
  padding: 80px 5%;
  background: var(--bg2);
}
.charity-inner { max-width: 800px; margin: 0 auto; text-align: center; }
.charity-badge {
  display: inline-block;
  padding: 6px 18px;
  background: rgba(239,68,68,0.12);
  border: 1px solid rgba(239,68,68,0.25);
  border-radius: 50px;
  font-size: 0.8rem; font-weight: 600;
  color: #f87171;
  margin-bottom: 18px;
}
.charity-header h2 {
  font-family: var(--font-head);
  font-size: clamp(1.8rem, 4vw, 2.4rem);
  font-weight: 800; letter-spacing: -1px;
  margin-bottom: 10px;
}
.charity-header p { color: var(--text-muted); font-size: 1rem; margin-bottom: 24px; }

.charity-amount {
  display: inline-flex; flex-direction: column; align-items: center;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 14px 36px;
  margin-bottom: 36px;
}
.amount-label { font-size: 0.72rem; text-transform: uppercase; letter-spacing: 1px; color: var(--text-muted); }
.amount-value { font-family: var(--font-head); font-size: 2rem; font-weight: 800; color: var(--green); }

.charity-video-link { display: block; }
.charity-thumb {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--border);
  max-width: 560px; margin: 0 auto;
  transition: transform var(--transition);
}
.charity-thumb:hover { transform: scale(1.01); }
.charity-thumb img { width: 100%; aspect-ratio: 16/9; object-fit: cover; background: var(--surface); }
.play-overlay {
  position: absolute; inset: 0;
  background: rgba(0,0,0,0.5);
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  gap: 12px;
  color: white;
  font-size: 0.9rem;
  font-weight: 600;
  transition: background var(--transition);
}
.play-overlay:hover { background: rgba(0,0,0,0.4); }
.play-circle {
  width: 64px; height: 64px;
  background: rgba(255,255,255,0.15);
  border: 2px solid rgba(255,255,255,0.4);
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  transition: background var(--transition);
}
.charity-thumb:hover .play-circle { background: rgba(255,255,255,0.25); }

/* ---------- Footer ---------- */
.footer {
  position: relative; z-index: 1;
  background: var(--bg);
  border-top: 1px solid var(--border);
}
.footer-top {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr;
  gap: 40px;
  padding: 60px 5% 50px;
  max-width: 1200px; margin: 0 auto;
}
.footer-brand .logo-text {
  font-family: var(--font-head);
  font-size: 1.1rem;
  font-weight: 800;
}
.footer-brand p { color: var(--text-muted); font-size: 0.875rem; margin: 10px 0 18px; }
.footer-yt {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 8px 18px;
  background: rgba(255,0,0,0.12);
  border: 1px solid rgba(255,0,0,0.2);
  border-radius: 50px;
  color: #f87171;
  font-size: 0.825rem;
  font-weight: 600;
  transition: background var(--transition);
}
.footer-yt:hover { background: rgba(255,0,0,0.2); }

.footer-links-col h5 {
  font-family: var(--font-head);
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  color: var(--text-muted);
  margin-bottom: 18px;
}
.footer-links-col a {
  display: block;
  font-size: 0.875rem;
  color: var(--text-soft);
  margin-bottom: 10px;
  transition: color var(--transition);
}
.footer-links-col a:hover { color: var(--green); }

.footer-bottom {
  border-top: 1px solid var(--border);
  padding: 18px 5%;
  text-align: center;
  font-size: 0.78rem;
  color: var(--text-muted);
  max-width: 100%;
}
.footer-bottom a { color: var(--green); font-weight: 600; }

/* ---------- Animations ---------- */
@keyframes fade-up {
  from { opacity: 0; transform: translateY(20px); }
  to   { opacity: 1; transform: translateY(0); }
}

.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}
.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.3s; }

/* ---------- Mobile Responsive ---------- */
@media (max-width: 900px) {
  .sem-grid { grid-template-columns: 1fr; }
  .footer-top { grid-template-columns: 1fr 1fr; }
  .footer-brand { grid-column: 1 / -1; }
}

@media (max-width: 640px) {
  .navbar { padding: 0 4%; }
  .nav-links { display: none; flex-direction: column; position: absolute; top: 68px; left: 0; right: 0; background: var(--bg); border-bottom: 1px solid var(--border); padding: 16px; gap: 4px; }
  .nav-links.open { display: flex; }
  .hamburger { display: flex; }

  .hero { padding: 110px 4% 70px; }
  .hero-title { letter-spacing: -1px; }

  .year-cards, .papers-section, .about-section, .charity-section { padding: 60px 4%; }

  .hero-stats { flex-direction: column; border-radius: var(--radius); gap: 0; }
  .stat-divider { width: 80%; height: 1px; }
  .stat { padding: 12px 20px; }

  .footer-top { grid-template-columns: 1fr; gap: 32px; }

  .pyq-content { flex-direction: column; text-align: center; }
}

/* ---------- Subject Cards (firstyear.html + branch pages) ---------- */
.subjects-section {
  position: relative; z-index: 1;
  padding: 80px 5%;
  background: var(--bg2);
}
.subjects-section .section-title { margin-top: 6px; margin-bottom: 8px; }
.subjects-section .section-desc  { color: var(--text-muted); font-size: 0.95rem; margin-bottom: 40px; }
 
.subjects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 14px;
}
 
.subj-card {
  display: flex; align-items: center; gap: 16px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px 20px;
  color: inherit; text-decoration: none;
  transition: border-color var(--transition), transform var(--transition), background var(--transition);
  position: relative; overflow: hidden;
}
/* .reveal sets opacity:0 but IntersectionObserver never adds .visible to .subj-card,
   so override here to keep cards always visible */
.subj-card.reveal,
.subj-card.reveal.reveal-delay-1,
.subj-card.reveal.reveal-delay-2,
.subj-card.reveal.reveal-delay-3 {
  opacity: 1;
  transform: translateY(0);
}
.subj-card::before {
  content: '';
  position: absolute; inset: 0;
  background: linear-gradient(90deg, var(--green-dim) 0%, transparent 100%);
  opacity: 0; transition: opacity var(--transition);
}
.subj-card:hover { border-color: var(--border-green); transform: translateX(5px); }
.subj-card:hover::before { opacity: 1; }
 
.subj-card-icon {
  width: 44px; height: 44px; flex-shrink: 0;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.3rem;
  background: var(--bg3);
  border: 1px solid var(--border);
  border-radius: 11px;
  position: relative; z-index: 1;
  transition: background var(--transition), border-color var(--transition);
}
.subj-card:hover .subj-card-icon { background: var(--green-glow); border-color: var(--border-green); }
 
.subj-card-body { flex: 1; position: relative; z-index: 1; }
.subj-card-body h3 {
  font-family: var(--font-head);
  font-size: 0.95rem; font-weight: 700;
  margin-bottom: 4px; line-height: 1.3;
}
.subj-card-tag {
  font-size: 0.72rem; color: var(--text-muted);
  background: var(--bg3);
  border: 1px solid var(--border);
  border-radius: 50px; padding: 2px 10px;
  display: inline-block;
}
 
.subj-card-arrow {
  font-size: 1.1rem; color: var(--text-muted);
  position: relative; z-index: 1;
  transition: transform var(--transition), color var(--transition);
  flex-shrink: 0;
}
.subj-card:hover .subj-card-arrow { transform: translateX(4px); color: var(--green); }
 
@media (max-width: 640px) {
  .subjects-section { padding: 60px 4%; }
  .subjects-grid { grid-template-columns: 1fr; }
}
 
/* ---------- Branch Cards (Papers.html) ---------- */
.branches-grid { grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); }
 
/* Branch cards are <a> tags — reset link style, keep card style */
a.branch-card {
  display: flex; flex-direction: column;
  text-decoration: none; color: inherit;
  cursor: pointer;
}
a.branch-card:hover { color: inherit; }
 
/* Abbreviation watermark is wider text — shrink font a bit */
.branch-card .year-card-number {
  font-size: 2.8rem;
  right: 18px; top: 14px;
}
 
/* ---------- Social Pills (footer) ---------- */
.footer-social { display: flex; gap: 8px; flex-wrap: wrap; margin-top: 12px; }
.social-pill {
  padding: 5px 14px;
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: 50px;
  font-size: 0.78rem; color: var(--text-soft);
  transition: border-color var(--transition), color var(--transition);
}
.social-pill:hover { border-color: var(--border-green); color: var(--green); }


/* ---------- Notes Cards (notes.html) ---------- */
.notes-section {
  position: relative; z-index: 1;
  padding: 80px 5%;
  background: var(--bg2);
}
.notes-section .section-title { margin-top: 6px; margin-bottom: 8px; }
.notes-section .section-desc  { color: var(--text-muted); font-size: 0.95rem; margin-bottom: 44px; }
 
.notes-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(290px, 1fr));
  gap: 22px;
}
 
/* The card itself */
.note-card {
  display: flex; flex-direction: column;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  text-decoration: none; color: inherit;
  transition: border-color var(--transition), transform var(--transition), box-shadow var(--transition);
}
.note-card:hover {
  border-color: var(--border-green);
  transform: translateY(-5px);
  box-shadow: 0 12px 40px rgba(0,0,0,0.35);
}
 
/* Top strip: year badge + sems */
.note-card-header {
  display: flex; align-items: center; justify-content: space-between;
  padding: 14px 18px 0;
}
.note-year-badge {
  font-family: var(--font-head);
  font-size: 0.72rem; font-weight: 800;
  text-transform: uppercase; letter-spacing: 1.5px;
  color: var(--green);
  background: var(--green-dim);
  border: 1px solid var(--border-green);
  border-radius: 50px;
  padding: 3px 12px;
}
.featured-badge {
  background: rgba(250,204,21,0.1);
  border-color: rgba(250,204,21,0.3);
  color: #facc15;
}
.note-sems {
  font-size: 0.72rem; color: var(--text-muted);
}
 
/* Thumbnail with hover overlay */
.note-card-thumb {
  position: relative;
  margin: 12px 18px 0;
  border-radius: 10px;
  overflow: hidden;
  aspect-ratio: 16 / 9;
  background: var(--bg3);
  border: 1px solid var(--border);
}
.note-card-thumb img {
  width: 100%; height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
  display: block;
}
.note-card:hover .note-card-thumb img { transform: scale(1.04); }
 
.note-card-overlay {
  position: absolute; inset: 0;
  background: rgba(10,12,18,0.55);
  display: flex; align-items: center; justify-content: center;
  opacity: 0; transition: opacity var(--transition);
}
.note-card-overlay span {
  font-family: var(--font-head);
  font-size: 0.9rem; font-weight: 700;
  color: var(--green);
  background: rgba(0,0,0,0.5);
  padding: 8px 20px; border-radius: 50px;
  border: 1px solid var(--border-green);
}
.note-card:hover .note-card-overlay { opacity: 1; }
 
/* Body: title + subject chips */
.note-card-body {
  padding: 16px 18px 12px;
  flex: 1;
}
.note-card-body h3 {
  font-family: var(--font-head);
  font-size: 1.05rem; font-weight: 800;
  margin-bottom: 12px;
}
.note-subjects {
  display: flex; flex-wrap: wrap; gap: 6px;
}
.note-subjects span {
  font-size: 0.72rem; color: var(--text-muted);
  background: var(--bg3);
  border: 1px solid var(--border);
  border-radius: 50px;
  padding: 3px 10px;
  transition: border-color var(--transition), color var(--transition);
}
.note-card:hover .note-subjects span {
  border-color: rgba(163,230,53,0.15);
  color: var(--text-soft);
}
 
/* Footer: count + CTA */
.note-card-footer {
  display: flex; align-items: center; justify-content: space-between;
  padding: 12px 18px 16px;
  border-top: 1px solid var(--border);
  margin-top: auto;
}
.note-count { font-size: 0.78rem; color: var(--text-muted); }
.note-cta {
  font-family: var(--font-head);
  font-size: 0.82rem; font-weight: 700;
  color: var(--green);
  transition: opacity var(--transition);
}
.note-card:hover .note-cta { opacity: 0.75; }
 
@media (max-width: 640px) {
  .notes-section { padding: 60px 4%; }
  .notes-grid { grid-template-columns: 1fr; }
}
 
 
/* ---------- Download Note Cards (3rdyearnotes.html etc.) ---------- */
.dl-notes-section {
  position: relative; z-index: 1;
  padding: 80px 5%;
  background: var(--bg2);
}
.dl-notes-section .section-title { margin-top: 6px; margin-bottom: 8px; }
.dl-notes-section .section-desc  { color: var(--text-muted); font-size: 0.92rem; margin-bottom: 40px; }
.coming-label {
  display: inline-block;
  background: rgba(250,204,21,0.1);
  border: 1px solid rgba(250,204,21,0.25);
  color: #facc15;
  border-radius: 50px; padding: 2px 10px;
  font-size: 0.75rem; font-weight: 600;
}
 
.dl-notes-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 16px;
  margin-bottom: 36px;
}
 
.dl-note-card {
  display: flex; flex-direction: column; gap: 10px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 22px 20px 18px;
  text-decoration: none; color: inherit;
  position: relative; overflow: hidden;
  transition: border-color var(--transition), transform var(--transition),
              box-shadow var(--transition), opacity 0.65s ease;
}
.dl-note-card::before {
  content: '';
  position: absolute; inset: 0;
  background: radial-gradient(circle at top left, var(--green-dim) 0%, transparent 65%);
  opacity: 0; transition: opacity var(--transition);
}
.dl-note-card:not(.coming-soon):hover {
  border-color: var(--border-green);
  transform: translateY(-4px);
  box-shadow: 0 10px 36px rgba(0,0,0,0.35);
}
.dl-note-card:not(.coming-soon):hover::before { opacity: 1; }
 
.dl-note-card.coming-soon {
  opacity: 0.62;
  cursor: default;
  border-style: dashed;
}
.dl-note-card.coming-soon.visible { opacity: 0.62 !important; }
 
.dl-note-top {
  display: flex; align-items: center; justify-content: space-between;
  position: relative; z-index: 1;
}
.dl-badge {
  font-size: 0.65rem; font-weight: 800;
  text-transform: uppercase; letter-spacing: 1.5px;
  padding: 3px 10px; border-radius: 50px;
}
.dl-badge.free {
  background: var(--green-dim);
  border: 1px solid var(--border-green);
  color: var(--green);
}
.dl-badge.soon {
  background: rgba(250,204,21,0.1);
  border: 1px solid rgba(250,204,21,0.25);
  color: #facc15;
}
.dl-sem {
  font-size: 0.72rem; color: var(--text-muted);
  background: var(--bg3); border: 1px solid var(--border);
  border-radius: 50px; padding: 2px 10px;
}
.dl-note-icon { font-size: 1.8rem; position: relative; z-index: 1; }
.dl-note-card h3 {
  font-family: var(--font-head);
  font-size: 0.98rem; font-weight: 700;
  line-height: 1.3; position: relative; z-index: 1;
}
.dl-note-card p {
  font-size: 0.8rem; color: var(--text-muted);
  position: relative; z-index: 1; margin-top: -2px;
}
.dl-note-btn {
  display: flex; align-items: center; gap: 7px;
  margin-top: auto; padding: 9px 14px;
  background: var(--green); color: #0d0f14;
  border-radius: 10px;
  font-family: var(--font-head); font-size: 0.8rem; font-weight: 700;
  position: relative; z-index: 1;
  transition: opacity var(--transition);
}
.dl-note-card:hover .dl-note-btn { opacity: 0.88; }
.dl-note-btn.soon-btn {
  background: var(--surface2); color: var(--text-muted);
  border: 1px dashed var(--border); font-size: 0.78rem;
}
 
/* Contribute Card */
.contribute-card {
  background: linear-gradient(135deg, var(--surface) 0%, rgba(163,230,53,0.05) 100%);
  border: 1px solid var(--border-green);
  border-radius: var(--radius-lg);
  padding: 32px 28px;
  display: flex; flex-wrap: wrap;
  align-items: flex-start; gap: 28px;
  margin-top: 8px;
}
.contribute-left { display: flex; gap: 20px; flex: 1; min-width: 260px; }
.contribute-icon {
  font-size: 2.2rem; flex-shrink: 0;
  width: 56px; height: 56px;
  display: flex; align-items: center; justify-content: center;
  background: var(--green-dim); border: 1px solid var(--border-green);
  border-radius: 14px;
}
.contribute-text { flex: 1; }
.contribute-badge {
  display: inline-block;
  font-size: 0.68rem; font-weight: 800;
  text-transform: uppercase; letter-spacing: 1.5px;
  color: var(--green); background: var(--green-dim);
  border: 1px solid var(--border-green);
  border-radius: 50px; padding: 3px 12px; margin-bottom: 10px;
}
.contribute-text h3 {
  font-family: var(--font-head);
  font-size: 1.15rem; font-weight: 800;
  margin-bottom: 8px; line-height: 1.3;
}
.contribute-text p {
  font-size: 0.875rem; color: var(--text-muted);
  line-height: 1.65; margin-bottom: 14px;
}
.contribute-email {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 9px 18px; background: var(--green); color: #0d0f14;
  border-radius: 50px; font-family: var(--font-head);
  font-size: 0.85rem; font-weight: 700;
  transition: opacity var(--transition), transform var(--transition);
}
.contribute-email:hover { opacity: 0.88; transform: translateY(-1px); }
.contribute-tags { display: flex; flex-wrap: wrap; gap: 8px; align-items: flex-start; padding-top: 4px; }
.contribute-tags span {
  padding: 6px 14px; background: var(--bg3);
  border: 1px solid var(--border); border-radius: 50px;
  font-size: 0.78rem; color: var(--text-soft);
}
 
/* Other Years Strip */
.other-years-section {
  position: relative; z-index: 1;
  padding: 60px 5%; background: var(--bg);
}
.other-years-section .section-title { margin-top: 6px; margin-bottom: 28px; }
.other-years-grid { display: flex; flex-wrap: wrap; gap: 12px; }
.other-year-pill {
  padding: 12px 24px; background: var(--surface);
  border: 1px solid var(--border); border-radius: var(--radius);
  font-family: var(--font-head); font-size: 0.9rem; font-weight: 700;
  color: var(--text-soft);
  transition: border-color var(--transition), color var(--transition),
              transform var(--transition), background var(--transition);
}
.other-year-pill:hover {
  border-color: var(--border-green); color: var(--green);
  transform: translateY(-2px); background: var(--green-dim);
}
 
@media (max-width: 640px) {
  .dl-notes-section { padding: 60px 4%; }
  .dl-notes-grid { grid-template-columns: 1fr; }
  .contribute-card { flex-direction: column; padding: 24px 18px; }
  .contribute-left { flex-direction: column; }
  .other-years-section { padding: 50px 4%; }
  .other-years-grid { flex-direction: column; }
  .other-year-pill { text-align: center; }
}
 

/* ---------- Search Page ---------- */
.search-hero-wrap {
  width: 100%; max-width: 640px;
  margin: 32px auto 0;
  animation: fade-up 0.7s 0.3s ease both;
}
.search-hero-box {
  display: flex; align-items: center;
  background: var(--surface);
  border: 1.5px solid var(--border);
  border-radius: var(--radius);
  padding: 6px 10px 6px 18px;
  gap: 10px;
  transition: border-color var(--transition), box-shadow var(--transition);
}
.search-hero-box:focus-within {
  border-color: var(--border-green);
  box-shadow: 0 0 0 3px rgba(163,230,53,0.1);
}
.search-hero-icon { color: var(--text-muted); flex-shrink: 0; }
.search-hero-input {
  flex: 1; background: none; border: none; outline: none;
  font-family: var(--font-body); font-size: 1rem;
  color: var(--text); padding: 10px 0;
}
.search-hero-input::placeholder { color: var(--text-muted); }
.search-hero-clear {
  display: none; align-items: center; justify-content: center;
  width: 28px; height: 28px;
  background: var(--surface2); border: 1px solid var(--border);
  border-radius: 50%; color: var(--text-muted);
  font-size: 0.75rem; cursor: pointer; flex-shrink: 0;
  transition: background var(--transition), color var(--transition);
}
.search-hero-clear:hover { background: rgba(239,68,68,0.15); color: #f87171; border-color: rgba(239,68,68,0.3); }
 
.search-meta {
  margin-top: 10px;
  font-size: 0.8rem; color: var(--text-muted); text-align: center;
}
.search-meta strong { color: var(--green); }
 
.search-filters {
  display: flex; gap: 8px; flex-wrap: wrap; justify-content: center;
  margin-top: 20px;
  animation: fade-up 0.7s 0.4s ease both;
}
.filter-pill {
  padding: 7px 18px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 50px;
  font-family: var(--font-head); font-size: 0.8rem; font-weight: 700;
  color: var(--text-muted); cursor: pointer;
  transition: background var(--transition), border-color var(--transition), color var(--transition);
}
.filter-pill:hover { border-color: var(--border-green); color: var(--text); }
.filter-pill.active {
  background: var(--green); color: #0d0f14;
  border-color: var(--green);
}
 
.search-year-label {
  font-family: var(--font-head);
  font-size: 1rem; font-weight: 800;
  color: var(--text-soft);
  padding: 32px 0 14px;
  border-bottom: 1px solid var(--border);
  margin-bottom: 18px;
  letter-spacing: -0.3px;
}
 
.search-empty {
  text-align: center;
  padding: 60px 20px;
  color: var(--text-muted);
}
.search-empty h3 {
  font-family: var(--font-head);
  font-size: 1.2rem; font-weight: 700;
  margin: 12px 0 8px; color: var(--text-soft);
}
.search-empty p { font-size: 0.875rem; }
 

/* ============================================================
   Paper Subject Page — 6DIP.html etc.
   ============================================================ */
 
/* --- Paper Hero --- */
.paper-hero {
  position: relative; z-index: 1;
  padding: 110px 5% 60px;
  background: radial-gradient(ellipse 70% 55% at 50% 0%, rgba(163,230,53,0.09) 0%, transparent 70%), var(--bg);
}
.paper-breadcrumb {
  display: flex; align-items: center; gap: 8px;
  font-size: 0.78rem; color: var(--text-muted);
  margin-bottom: 28px;
}
.paper-breadcrumb a { color: var(--text-muted); transition: color var(--transition); }
.paper-breadcrumb a:hover { color: var(--green); }
.paper-breadcrumb span { opacity: 0.5; }
 
.paper-hero-inner {
  display: flex; align-items: flex-start;
  justify-content: space-between; gap: 40px; flex-wrap: wrap;
}
.paper-hero-left { flex: 1; min-width: 260px; }
.paper-title {
  font-family: var(--font-head);
  font-size: clamp(2.4rem, 5vw, 4.2rem);
  font-weight: 800; letter-spacing: -2px;
  line-height: 1.08; margin: 16px 0 18px;
}
.paper-sub { font-size: 1rem; color: var(--text-muted); margin-bottom: 22px; }
.paper-meta-pills { display: flex; flex-wrap: wrap; gap: 8px; }
.paper-meta-pills span {
  padding: 5px 14px;
  background: var(--surface); border: 1px solid var(--border);
  border-radius: 50px; font-size: 0.78rem; color: var(--text-soft);
}
 
/* Subject card (right side) */
.paper-hero-right { flex-shrink: 0; }
.paper-subject-card {
  background: var(--surface);
  border: 1px solid var(--border-green);
  border-radius: var(--radius-lg);
  padding: 24px 22px;
  min-width: 220px; text-align: center;
}
.psc-icon { font-size: 2.8rem; margin-bottom: 10px; }
.psc-code { font-size: 0.72rem; color: var(--text-muted); margin-bottom: 6px; }
.psc-name {
  font-family: var(--font-head); font-size: 0.95rem; font-weight: 700;
  margin-bottom: 14px;
}
.psc-tags { display: flex; flex-wrap: wrap; gap: 6px; justify-content: center; }
.psc-tags span {
  font-size: 0.68rem; color: var(--text-muted);
  background: var(--bg3); border: 1px solid var(--border);
  border-radius: 50px; padding: 2px 9px;
}
 
/* --- Ad Slot --- */
.ad-slot-wrap {
  padding: 16px 5%;
  background: var(--bg2);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}
.ad-label {
  font-size: 0.65rem; text-transform: uppercase; letter-spacing: 1.5px;
  color: var(--text-muted); text-align: center; margin-bottom: 8px;
}
 
/* --- Unlock Gate --- */
.unlock-section {
  position: relative; z-index: 1;
  padding: 60px 5%;
  background: var(--bg);
  display: flex; justify-content: center;
}
.unlock-card {
  background: var(--surface);
  border: 1px solid var(--border-green);
  border-radius: var(--radius-lg);
  padding: 44px 40px;
  max-width: 560px; width: 100%;
  text-align: center;
  box-shadow: 0 8px 50px rgba(163,230,53,0.08);
}
.unlock-icon { font-size: 3rem; margin-bottom: 16px; }
.unlock-card h2 {
  font-family: var(--font-head);
  font-size: 1.4rem; font-weight: 800;
  margin-bottom: 10px;
}
.unlock-card > p {
  font-size: 0.9rem; color: var(--text-muted);
  line-height: 1.65; margin-bottom: 28px;
}
 
.unlock-steps {
  display: flex; flex-direction: column; gap: 10px;
  margin-bottom: 28px; text-align: left;
}
.unlock-step {
  display: flex; align-items: center; gap: 12px;
  padding: 10px 16px;
  background: var(--bg3); border: 1px solid var(--border);
  border-radius: var(--radius); font-size: 0.88rem; color: var(--text-muted);
  transition: border-color var(--transition), color var(--transition);
}
.unlock-step.done {
  border-color: var(--border-green); color: var(--text);
}
.step-num {
  width: 26px; height: 26px; flex-shrink: 0;
  background: var(--surface2); border: 1px solid var(--border);
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-family: var(--font-head); font-size: 0.78rem; font-weight: 700;
}
.unlock-step.done .step-num {
  background: var(--green); color: #0d0f14; border-color: var(--green);
}
 
.unlock-btn {
  display: inline-flex; align-items: center; gap: 10px;
  padding: 14px 32px;
  background: var(--green); color: #0d0f14;
  border-radius: 50px;
  font-family: var(--font-head); font-size: 0.95rem; font-weight: 800;
  box-shadow: 0 4px 28px rgba(163,230,53,0.35);
  transition: opacity var(--transition), transform var(--transition), box-shadow var(--transition);
  margin-bottom: 20px;
}
.unlock-btn:hover { opacity: 0.9; transform: translateY(-2px); box-shadow: 0 6px 36px rgba(163,230,53,0.45); }
 
/* Timer */
.unlock-timer {
  display: flex; flex-direction: column; align-items: center; gap: 10px;
  margin-bottom: 20px;
}
.timer-ring {
  position: relative; width: 64px; height: 64px;
  display: flex; align-items: center; justify-content: center;
}
.timer-ring svg { position: absolute; inset: 0; width: 100%; height: 100%; }
.timer-ring span {
  font-family: var(--font-head); font-size: 1.3rem; font-weight: 800;
  color: var(--green); position: relative; z-index: 1;
}
.unlock-timer p { font-size: 0.85rem; color: var(--text-muted); }
 
.unlock-note { font-size: 0.78rem; color: var(--text-muted); margin-top: 16px; }
.unlock-already {
  background: none; border: none; color: var(--green);
  font-size: 0.78rem; font-weight: 600; cursor: pointer;
  text-decoration: underline; padding: 0;
}
 
/* --- Papers Section --- */
.papers-section {
  position: relative; z-index: 1;
  padding: 60px 5% 40px;
  background: var(--bg);
}
.papers-header {
  display: flex; align-items: center;
  justify-content: space-between; flex-wrap: wrap;
  gap: 16px; margin-bottom: 32px;
}
.papers-count-badge {
  padding: 6px 18px;
  background: var(--green-dim); border: 1px solid var(--border-green);
  border-radius: 50px;
  font-family: var(--font-head); font-size: 0.8rem; font-weight: 700;
  color: var(--green);
}
 
.papers-table-wrap {
  border: 1px solid var(--border);
  border-radius: var(--radius-lg); overflow: hidden;
}
.papers-table {
  width: 100%; border-collapse: collapse;
}
.papers-table thead tr {
  background: var(--surface2);
  border-bottom: 1px solid var(--border);
}
.papers-table th {
  padding: 14px 20px; text-align: left;
  font-family: var(--font-head); font-size: 0.78rem; font-weight: 700;
  text-transform: uppercase; letter-spacing: 1px; color: var(--text-muted);
}
.paper-row {
  border-bottom: 1px solid var(--border);
  transition: background var(--transition);
}
.paper-row:last-child { border-bottom: none; }
.paper-row:hover { background: var(--green-dim); }
.paper-row.latest { background: rgba(163,230,53,0.04); }
.papers-table td {
  padding: 14px 20px; font-size: 0.88rem; color: var(--text-soft);
}
 
.year-badge {
  display: inline-block;
  padding: 3px 12px;
  background: var(--surface2); border: 1px solid var(--border);
  border-radius: 50px;
  font-family: var(--font-head); font-size: 0.78rem; font-weight: 700;
  color: var(--text-soft);
}
.year-badge.new {
  background: var(--green-dim); border-color: var(--border-green);
  color: var(--green);
}
.type-tag {
  padding: 3px 10px; border-radius: 50px; font-size: 0.72rem; font-weight: 600;
}
.type-tag.regular {
  background: rgba(99,102,241,0.1); border: 1px solid rgba(99,102,241,0.25);
  color: #818cf8;
}
.type-tag.back {
  background: rgba(250,204,21,0.1); border: 1px solid rgba(250,204,21,0.25);
  color: #facc15;
}
 
.dl-btn {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 7px 16px;
  background: var(--green); color: #0d0f14;
  border-radius: 50px;
  font-family: var(--font-head); font-size: 0.78rem; font-weight: 700;
  transition: opacity var(--transition), transform var(--transition);
  white-space: nowrap;
}
.dl-btn:hover { opacity: 0.88; transform: translateY(-1px); }
 
/* Notes CTA card */
.notes-cta-card {
  display: flex; align-items: center; gap: 20px; flex-wrap: wrap;
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius-lg); padding: 24px 28px;
  margin-top: 20px;
}
.notes-cta-icon { font-size: 2rem; flex-shrink: 0; }
.notes-cta-text { flex: 1; }
.notes-cta-text h3 {
  font-family: var(--font-head); font-size: 1rem; font-weight: 700;
  margin-bottom: 4px;
}
.notes-cta-text p { font-size: 0.85rem; color: var(--text-muted); }
 
@media (max-width: 768px) {
  .paper-hero-right { width: 100%; }
  .paper-subject-card { min-width: auto; }
  .unlock-card { padding: 32px 20px; }
  .papers-table th:nth-child(2),
  .papers-table td:nth-child(2) { display: none; }
}
@media (max-width: 480px) {
  .papers-table th:nth-child(3),
  .papers-table td:nth-child(3) { display: none; }
}
 
/* --- Ad-Click Unlock UI --- */
.ad-instruction-box {
  display: flex; align-items: flex-start; gap: 16px;
  background: linear-gradient(135deg, rgba(163,230,53,0.07) 0%, var(--bg3) 100%);
  border: 1.5px solid var(--border-green);
  border-radius: var(--radius); padding: 18px 20px;
  margin-bottom: 20px; position: relative; overflow: hidden;
  text-align: left;
}
.ad-inst-pulse {
  position: absolute; top: -20px; right: -20px;
  width: 80px; height: 80px;
  background: rgba(163,230,53,0.12); border-radius: 50%;
  animation: pulse-ring 2s ease-in-out infinite;
}
@keyframes pulse-ring {
  0%,100% { transform: scale(1); opacity: 0.6; }
  50%      { transform: scale(1.3); opacity: 0.2; }
}
.ad-inst-text { flex: 1; }
.ad-inst-label {
  font-size: 0.7rem; font-weight: 800; text-transform: uppercase;
  letter-spacing: 1.5px; color: var(--green); display: block; margin-bottom: 6px;
}
.ad-inst-text h3 {
  font-family: var(--font-head); font-size: 1rem; font-weight: 800;
  margin-bottom: 6px; line-height: 1.3;
}
.ad-inst-text p { font-size: 0.82rem; color: var(--text-muted); line-height: 1.6; }
.ad-inst-arrow {
  display: flex; flex-direction: column; align-items: center;
  gap: 4px; flex-shrink: 0;
  font-size: 0.68rem; color: var(--green); font-weight: 700;
}
.bounce-arrow {
  font-size: 1.8rem; color: var(--green);
  animation: bounce-down 1s ease-in-out infinite;
}
 
/* Gate ad wrap */
.gate-ad-wrap {
  background: var(--bg3);
  border: 2px dashed var(--border-green);
  border-radius: var(--radius); padding: 12px;
  margin-bottom: 20px;
  cursor: pointer;
  transition: border-color var(--transition), background var(--transition);
}
.gate-ad-wrap:hover { border-color: var(--green); background: rgba(163,230,53,0.04); }
.gate-ad-label {
  font-size: 0.72rem; font-weight: 700; color: var(--green);
  text-align: center; margin-bottom: 8px; letter-spacing: 0.5px;
}
.gate-ad-unit { min-height: 120px; border-radius: 8px; overflow: hidden; }
 
/* After-ad message */
.after-ad-msg {
  padding: 16px;
  background: rgba(163,230,53,0.06);
  border: 1px solid var(--border-green);
  border-radius: var(--radius); margin-bottom: 16px;
}
.after-ad-msg .unlock-timer { flex-direction: row; gap: 16px; justify-content: center; }
.after-ad-msg .unlock-timer p { font-size: 0.88rem; color: var(--text-soft); text-align: left; }
 
/* Active step highlight */
.unlock-step.active {
  border-color: rgba(250,204,21,0.4); color: #facc15;
}
.unlock-step.active .step-num {
  background: rgba(250,204,21,0.15); border-color: rgba(250,204,21,0.4); color: #facc15;
}