/* =======================================================
   UNIFY EDUTECH — Master Stylesheet
   Clean, conflict-free, single source of truth
   ======================================================= */

/* ── Design Tokens ─────────────────────────────────────── */
:root {
  --primary:      #00ddff;
  --secondary:    #d946ef;
  --accent:       #8b5cf6;
  --bg:           #0f172a;
  --bg-deep:      #020617;
  --text:         #ffffff;
  --text-muted:   #94a3b8;
  --text-dim:     #64748b;
  --glass-bg:     rgba(255,255,255,0.06);
  --glass-border: rgba(255,255,255,0.12);
  --transition:   0.3s cubic-bezier(0.4,0,0.2,1);
  --font:         'Inter', sans-serif;
}

/* ── Reset ──────────────────────────────────────────────── */
*, *::before, *::after { margin:0; padding:0; box-sizing:border-box; }
html { scroll-behavior:smooth; }

/* ── Base ───────────────────────────────────────────────── */
body {
  font-family: var(--font);
  background-color: var(--bg);
  color: var(--text);
  line-height: 1.6;
  overflow-x: hidden;
  min-height: 100vh;
  position: relative;
  background-image:
    linear-gradient(rgba(255,255,255,0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.04) 1px, transparent 1px),
    linear-gradient(135deg, rgba(59,130,246,0.08) 25%, transparent 25%),
    linear-gradient(225deg, rgba(139,92,246,0.08) 25%, transparent 25%),
    linear-gradient(45deg,  rgba(37,99,235,0.08)  25%, transparent 25%),
    linear-gradient(315deg, rgba(236,72,153,0.04)  25%, transparent 25%);
  background-size: 40px 40px, 40px 40px, 100% 100%, 100% 100%, 100% 100%, 100% 100%;
  background-attachment: fixed;
}

/* Animated geometric decorators */
body::before {
  content: '';
  position: fixed; top:10%; right:-5%;
  width:400px; height:400px;
  border: 2px solid rgba(0,221,255,0.1);
  border-radius: 50%;
  animation: floatRotate 20s infinite linear;
  z-index: -1;
  background: conic-gradient(from 0deg, transparent, rgba(0,221,255,0.04), transparent);
}
body::after {
  content: '';
  position: fixed; bottom:10%; left:-5%;
  width:300px; height:300px;
  border: 1px solid rgba(217,70,239,0.12);
  transform: rotate(45deg);
  z-index: -1;
  background: linear-gradient(45deg, transparent, rgba(217,70,239,0.04));
  animation: floatSimple 15s infinite alternate ease-in-out;
}
.art-poly {
  position: fixed; top:30%; left:20%;
  width:60vw; height:60vw;
  background: radial-gradient(circle at center, rgba(59,130,246,0.03), transparent 60%);
  clip-path: polygon(50% 0%,100% 38%,82% 100%,18% 100%,0% 38%);
  z-index: -2;
  animation: spinSlow 60s infinite linear;
  pointer-events: none;
}

@keyframes floatRotate {
  0%   { transform: rotate(0deg)   translate(0,0); }
  50%  { transform: rotate(180deg) translate(20px,20px); }
  100% { transform: rotate(360deg) translate(0,0); }
}
@keyframes floatSimple {
  0%   { transform: translateY(0)     rotate(45deg); }
  100% { transform: translateY(-30px) rotate(50deg); }
}
@keyframes spinSlow {
  from { transform: rotate(0deg); }
  to   { transform: rotate(360deg); }
}
@keyframes shine {
  0%   { background-position: 200% 0; }
  100% { background-position:-200% 0; }
}

/* ── Typography ─────────────────────────────────────────── */
h1,h2,h3,h4,h5,h6 {
  font-weight: 800;
  line-height: 1.2;
  color: #fff;
  text-shadow: 0 4px 10px rgba(0,0,0,0.5);
  letter-spacing: -0.02em;
  margin-bottom: 1rem;
}
p  { color: var(--text-muted); }
a  { text-decoration:none; color:inherit; transition: all var(--transition); }
ul { list-style:none; }

/* ── Navbar ─────────────────────────────────────────────── */
.navbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1.2rem 5%;
  background: rgba(15,23,42,0.85);
  backdrop-filter: blur(18px);
  border-bottom: 1px solid var(--glass-border);
  position: sticky;
  top: 0;
  z-index: 1000;
}
.logo {
  font-size: 1.8rem;
  font-weight: 800;
  background: linear-gradient(to right, var(--primary), var(--secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  letter-spacing: -1px;
}
.nav-links {
  display: flex;
  gap: 2rem;
  list-style: none;
  align-items: center;
}
.nav-links a {
  font-weight: 500;
  font-size: 0.88rem;
  color: rgba(255,255,255,0.65);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  padding: 0.3rem 0;
  border-bottom: 2px solid transparent;
  transition: all var(--transition);
}
.nav-links a:hover,
.nav-links a.active {
  color: #fff;
  border-bottom-color: var(--primary);
  text-shadow: 0 0 8px rgba(0,221,255,0.5);
}
.menu-toggle {
  display: none;
  font-size: 1.5rem;
  cursor: pointer;
  color: white;
  background: none;
  border: none;
  padding: 0.3rem;
}

/* ── Page Header (shared by inner pages) ────────────────── */
.page-header {
  padding: 7rem 5% 4.5rem;
  text-align: center;
  border-bottom: 1px solid rgba(255,255,255,0.07);
  position: relative;
}
.page-header .eyebrow {
  display: inline-block;
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.2em;
  color: var(--primary);
  background: rgba(0,221,255,0.08);
  border: 1px solid rgba(0,221,255,0.2);
  padding: 0.35rem 1rem;
  border-radius: 2px;
  margin-bottom: 1.5rem;
}
.page-header h1 {
  font-size: clamp(2.2rem,5vw,3.8rem);
  background: linear-gradient(135deg,#fff 0%,var(--primary) 60%,var(--secondary) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  letter-spacing: -0.03em;
  margin-bottom: 1rem;
}
.page-header p {
  font-size: 1.05rem;
  max-width: 600px;
  margin: 0 auto;
  color: var(--text-muted);
}

/* ── Buttons ────────────────────────────────────────────── */
.cta-button, .btn-primary {
  display: inline-block;
  padding: 1rem 2.8rem;
  background: linear-gradient(90deg,#3b82f6,#8b5cf6);
  color: white;
  border-radius: 4px;
  font-weight: 600;
  font-family: var(--font);
  font-size: 0.95rem;
  box-shadow: 0 0 20px rgba(59,130,246,0.4);
  border: 1px solid rgba(255,255,255,0.15);
  position: relative;
  overflow: hidden;
  text-transform: uppercase;
  letter-spacing: 1px;
  cursor: pointer;
  transition: transform var(--transition), box-shadow var(--transition);
}
.cta-button::after, .btn-primary::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(45deg,transparent 40%,rgba(255,255,255,0.18) 50%,transparent 60%);
  background-size: 200% 200%;
  animation: shine 3s infinite;
}
.cta-button:hover, .btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 0 30px rgba(139,92,246,0.6);
  color: white;
}
.btn-outline {
  display: inline-block;
  padding: 0.85rem 2rem;
  background: transparent;
  color: var(--primary);
  border: 1px solid var(--primary);
  border-radius: 4px;
  font-weight: 700;
  font-size: 0.88rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  transition: all var(--transition);
}
.btn-outline:hover { background:var(--primary); color:var(--bg); }

/* ── Glass Card ─────────────────────────────────────────── */
.glass-card {
  background: var(--glass-bg);
  backdrop-filter: blur(12px);
  border: 1px solid var(--glass-border);
  border-radius: 14px;
  padding: 2rem 2.2rem;
  position: relative;
  transition: all var(--transition);
}
.glass-card::before {
  content:'';
  position:absolute; top:0; left:0;
  width:40px; height:40px;
  border-top: 2px solid var(--primary);
  border-left: 2px solid var(--primary);
  border-radius: 14px 0 0 0;
  transition: all var(--transition);
}
.glass-card::after {
  content:'';
  position:absolute; bottom:0; right:0;
  width:40px; height:40px;
  border-bottom: 2px solid var(--secondary);
  border-right:  2px solid var(--secondary);
  border-radius: 0 0 14px 0;
  transition: all var(--transition);
}
.glass-card:hover {
  border-color: rgba(0,221,255,0.25);
  transform: translateY(-4px);
  box-shadow: 0 16px 40px rgba(0,0,0,0.4);
}

/* ── Page Content Wrapper ───────────────────────────────── */
.page-content {
  max-width: 1100px;
  width: 100%;
  margin: 0 auto;
  padding: 0 clamp(1.5rem, 5%, 3rem) 6rem;
}

/* ── Section Divider ────────────────────────────────────── */
.section-divider {
  border: none;
  border-top: 1px solid rgba(255,255,255,0.07);
  margin: 3.5rem 0;
}

/* ── Section Title (general) ────────────────────────────── */
.section-heading {
  display: flex;
  align-items: center;
  gap: 0.8rem;
  font-size: 1.6rem;
  font-weight: 800;
  color: #fff;
  margin-bottom: 1.5rem;
  letter-spacing: -0.02em;
}
.section-heading .icon {
  font-size: 1.1rem;
  width: 36px; height: 36px;
  display: flex; align-items: center; justify-content: center;
  background: rgba(0,221,255,0.08);
  border: 1px solid rgba(0,221,255,0.2);
  border-radius: 8px;
  flex-shrink: 0;
}
.section-heading .accent { color: var(--primary); }

/* ── Hero (index.html) ──────────────────────────────────── */
.hero {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 8rem 5% 5rem;
  min-height: 80vh;
  gap: 3rem;
}
.hero-content { flex:1; max-width:600px; z-index:1; }
.hero h1 {
  font-size: clamp(3rem,5vw,4.5rem);
  margin-bottom: 1.5rem;
  background: linear-gradient(180deg,#fff 0%,#94a3b8 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}
.hero p { font-size:1.2rem; margin-bottom:2.5rem; color:#94a3b8; max-width:90%; }
.hero-image { flex:1; display:flex; justify-content:center; z-index:1; position:relative; }
.hero-image::before {
  content:'';
  position:absolute; width:100%; height:100%;
  border: 2px solid rgba(0,221,255,0.18);
  top:20px; right:-20px; z-index:-1; border-radius:20px;
}
.hero-image img {
  max-width:100%; height:auto; border-radius:20px;
  border: 1px solid rgba(255,255,255,0.08);
  box-shadow: 0 20px 50px rgba(0,0,0,0.5);
}

/* ── Splash / Zig-zag Cards (index.html) ────────────────── */
.splash-section {
  padding: 6rem 5%;
  max-width: 1200px;
  margin: 0 auto;
}
.splash-section .section-title {
  text-align: center;
  font-size: 3rem;
  margin-bottom: 5rem;
  color: #fff;
}
.splash-container { display:flex; flex-direction:column; gap:6rem; }
.splash-row       { display:flex; width:100%; padding:1rem 0; }
.splash-row.left  { justify-content:flex-start; }
.splash-row.right { justify-content:flex-end; }
.splash-card-boxed {
  width: 48%;
  background: linear-gradient(145deg,rgba(30,41,59,0.8),rgba(15,23,42,0.9));
  border-radius: 12px;
  border: 1px solid var(--glass-border);
  overflow: hidden;
  transition: all 0.4s cubic-bezier(0.4,0,0.2,1);
  position: relative;
  box-shadow: 0 4px 6px rgba(0,0,0,0.2);
}
.splash-card-boxed::before {
  content:''; position:absolute; top:0; left:0;
  width:40px; height:40px;
  border-top: 2px solid var(--primary);
  border-left: 2px solid var(--primary);
  z-index:2; transition:all 0.3s;
}
.splash-card-boxed::after {
  content:''; position:absolute; bottom:0; right:0;
  width:40px; height:40px;
  border-bottom: 2px solid var(--secondary);
  border-right:  2px solid var(--secondary);
  z-index:2; transition:all 0.3s;
}
.splash-card-boxed:hover { transform:translateY(-5px); border-color:rgba(255,255,255,0.2); }
.splash-card-boxed img  { width:100%; height:250px; object-fit:cover; filter:grayscale(15%); transition:filter 0.3s; }
.splash-card-boxed:hover img { filter:grayscale(0%); }
.splash-card-boxed .info { padding:2.5rem; }
.splash-card-boxed .info h3 { font-size:1.5rem; color:#fff; margin-bottom:1rem; }
.splash-card-boxed .info p  { color:var(--text-muted); }

/* ── Services Grid ──────────────────────────────────────── */
.services-section { padding:5rem 5%; max-width:1200px; margin:0 auto; }
.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit,minmax(260px,1fr));
  gap: 2rem;
}
.service-card {
  background: var(--glass-bg);
  backdrop-filter: blur(10px);
  padding: 2.5rem 2rem;
  border-radius: 14px;
  border: 1px solid var(--glass-border);
  text-align: center;
  transition: all var(--transition);
  position: relative;
  z-index: 1;
  display: block;
  text-decoration: none;
}
.service-card:hover {
  background: rgba(255,255,255,0.09);
  transform: translateY(-5px);
  border-color: var(--primary);
  box-shadow: 0 12px 30px rgba(0,221,255,0.1);
  color: inherit;
}
.service-icon {
  font-size: 2.8rem;
  margin-bottom: 1.4rem;
  text-shadow: 0 0 20px rgba(0,221,255,0.4);
}
.service-card h3 { font-size:1.2rem; margin-bottom:0.8rem; color:#fff; }
.service-card p  { font-size:0.9rem; color:var(--text-muted); }

/* ── About page ─────────────────────────────────────────── */
.about-content {
  max-width: 1100px;
  margin: 4rem auto;
  padding: 0 clamp(1.5rem, 5%, 3rem) 5rem;
  width: 100%;
}
.about-content h2 { font-size:1.8rem; color:#fff; margin-bottom:1rem; }
.about-content p  { color:var(--text-muted); margin-bottom:1.2rem; font-size:0.97rem; }

.team-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit,minmax(180px,1fr));
  gap: 2rem;
  margin-top: 3rem;
}
.team-member {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: 14px;
  padding: 2rem;
  text-align: center;
  transition: all var(--transition);
}
.team-member:hover { border-color:var(--primary); transform:translateY(-4px); }
.team-member img { width:80px; height:80px; border-radius:50%; object-fit:cover; margin-bottom:1rem; border:2px solid rgba(0,221,255,0.3); }
.team-member h3 { font-size:1.1rem; margin-bottom:0.3rem; }
.team-member p  { font-size:0.85rem; color:var(--text-dim); }

/* ── Footer ─────────────────────────────────────────────── */
footer {
  background-color: var(--bg-deep);
  border-top: 1px solid rgba(255,255,255,0.08);
  padding: 5rem 5% 2.5rem;
}
.footer-content {
  display: flex;
  justify-content: space-between;
  border-bottom: 1px solid rgba(255,255,255,0.08);
  padding-bottom: 3rem;
  margin-bottom: 2rem;
  flex-wrap: wrap;
  gap: 3rem;
}
.footer-col h4 {
  color: white;
  margin-bottom: 1.5rem;
  font-size: 1rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}
.footer-col ul li { margin-bottom:0.8rem; }
.footer-col ul li a { color:var(--text-dim); transition:color var(--transition); }
.footer-col ul li a:hover { color:var(--primary); }
.footer-col p { color:var(--text-dim); font-size:0.9rem; }
.copyright { font-size:0.82rem; color:var(--text-dim); text-align:center; }

/* ── Updates page ───────────────────────────────────────── */
.updates-hero {
  max-width: 1100px;
  width: calc(100% - clamp(3rem, 10%, 6rem));
  margin: 3rem auto;
  padding: 3rem 2.5rem;
  border-radius: 20px;
  background: linear-gradient(135deg, rgba(0,221,255,0.08), rgba(139,92,246,0.1));
  border: 1px solid var(--glass-border);
  backdrop-filter: blur(18px);
  position: relative;
  overflow: hidden;
}
.hero-glow {
  position: absolute; width:250px; height:250px;
  right:-80px; top:-80px;
  background: radial-gradient(circle,rgba(0,221,255,0.3),transparent 70%);
  opacity: 0.15; pointer-events:none;
}
.hero-badge {
  display: inline-block;
  padding: 0.4rem 1rem;
  border-radius: 50px;
  background: rgba(255,255,255,0.07);
  border: 1px solid rgba(255,255,255,0.15);
  margin-bottom: 1rem;
  font-size: 0.82rem;
  color: var(--primary);
  font-weight: 600;
}
.updates-hero h1 { font-size:clamp(2rem,4vw,3rem); margin-bottom:1rem; }
.updates-hero p  { max-width:650px; font-size:1rem; color:var(--text-muted); }
.updates-hero span { color:var(--primary); font-weight:700; }
.hero-stats { display:flex; gap:1rem; margin-top:2rem; flex-wrap:wrap; }
.hero-stats div {
  min-width:100px; padding:1rem 1.2rem;
  border-radius:12px;
  background:rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.12);
}
.hero-stats strong { display:block; font-size:1.3rem; color:var(--primary); }
.hero-stats small  { color:var(--text-muted); font-size:0.8rem; }

.updates-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit,minmax(270px,1fr));
  gap: 1.8rem;
  margin-bottom: 2.5rem;
}
.update-card {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  padding: 2rem;
  border-radius: 16px;
  backdrop-filter: blur(12px);
  transition: all var(--transition);
}
.update-card:hover { transform:translateY(-6px); border-color:var(--primary); }
.update-icon  { font-size:2.2rem; margin-bottom:1rem; }
.update-card h3 { color:var(--primary); margin-bottom:0.7rem; font-size:1.1rem; }
.update-card p  { font-size:0.9rem; color:var(--text-muted); line-height:1.7; }
.update-card a  { color:var(--secondary); font-weight:700; }
.update-card ul { list-style:disc; padding-left:1.2rem; margin-top:0.8rem; }
.update-card ul li { color:var(--text-muted); font-size:0.88rem; margin-bottom:0.4rem; }

.timeline {
  padding: 2rem 2.5rem;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: 16px;
}
.timeline h2 { font-size:1.4rem; margin-bottom:1.2rem; }
.timeline ul { list-style:none; }
.timeline ul li {
  color:var(--text-muted); font-size:0.92rem;
  padding: 0.6rem 0 0.6rem 1.4rem;
  border-bottom: 1px solid rgba(255,255,255,0.06);
  position: relative;
}
.timeline ul li:last-child { border-bottom:none; }
.timeline ul li::before { content:'›'; position:absolute; left:0; color:var(--primary); font-weight:700; }

/* ── Contact page ───────────────────────────────────────── */
.contact-wrapper {
  max-width: 1100px;
  width: 100%;
  margin: 4rem auto 6rem;
  padding: 0 clamp(1.5rem, 5%, 3rem);
  display: grid;
  grid-template-columns: 1fr 1.5fr;
  gap: 3rem;
  align-items: start;
}
.contact-info-block h2  { font-size:2rem; margin-bottom:1rem; }
.contact-info-block p   { color:var(--text-muted); margin-bottom:2rem; font-size:0.97rem; }
.contact-item           { margin-bottom:1.8rem; }
.contact-item span      { display:block; font-size:0.72rem; text-transform:uppercase; letter-spacing:0.14em; color:var(--primary); margin-bottom:0.3rem; font-weight:700; }
.contact-item a,
.contact-item strong    { font-size:1rem; color:#fff; font-weight:600; }
.contact-item a:hover   { color:var(--primary); }

.contact-form-block {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: 18px;
  padding: 2.5rem;
  backdrop-filter: blur(12px);
}
.contact-form-block h3  { font-size:1.3rem; margin-bottom:1.5rem; }
.form-group             { margin-bottom:1.2rem; }
.form-group label       { display:block; font-size:0.78rem; font-weight:700; text-transform:uppercase; letter-spacing:0.1em; color:var(--text-dim); margin-bottom:0.4rem; }
.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: 0.85rem 1.1rem;
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--glass-border);
  border-radius: 8px;
  color: #fff;
  font-family: var(--font);
  font-size: 0.95rem;
  transition: border-color var(--transition);
  outline: none;
}
.form-group input:focus,
.form-group textarea:focus { border-color:var(--primary); background:rgba(255,255,255,0.07); }
.form-group textarea { height:130px; resize:vertical; }

/* ── Downloads page ─────────────────────────────────────── */
.dl-filter-bar {
  display: flex;
  gap: 0.6rem;
  flex-wrap: wrap;
  margin-bottom: 2rem;
}
.dl-filter {
  padding: 0.45rem 1.1rem;
  border-radius: 50px;
  border: 1px solid var(--glass-border);
  background: rgba(255,255,255,0.04);
  color: var(--text-muted);
  font-size: 0.82rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition);
  font-family: var(--font);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}
.dl-filter:hover,
.dl-filter.active { background:var(--primary); color:var(--bg); border-color:var(--primary); }

.dl-section-label {
  font-size: 0.72rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  color: var(--text-dim);
  margin: 2.5rem 0 1.2rem;
  padding-bottom: 0.6rem;
  border-bottom: 1px solid rgba(255,255,255,0.07);
}

.dl-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill,minmax(280px,1fr));
  gap: 1.4rem;
}
.dl-card {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: 14px;
  padding: 1.6rem;
  transition: all var(--transition);
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 0.8rem;
}
.dl-card:hover { border-color:var(--primary); transform:translateY(-4px); box-shadow:0 12px 28px rgba(0,221,255,0.1); }
.dl-card-top   { display:flex; align-items:flex-start; gap:1rem; }
.dl-icon {
  font-size: 1.8rem;
  width:52px; height:52px;
  display:flex; align-items:center; justify-content:center;
  background: rgba(0,221,255,0.08);
  border: 1px solid rgba(0,221,255,0.15);
  border-radius: 10px;
  flex-shrink: 0;
}
.dl-meta { flex:1; min-width:0; }
.dl-title { font-size:0.97rem; font-weight:700; color:#fff; margin-bottom:0.25rem; line-height:1.3; }
.dl-sub   { font-size:0.78rem; color:var(--text-dim); }
.dl-tags  { display:flex; gap:0.4rem; flex-wrap:wrap; }
.dl-tag {
  font-size: 0.67rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  padding: 0.2rem 0.55rem;
  border-radius: 3px;
  border: 1px solid;
}
.tag-physics  { color:#00ddff; border-color:rgba(0,221,255,0.3);  background:rgba(0,221,255,0.07); }
.tag-chem     { color:#d946ef; border-color:rgba(217,70,239,0.3); background:rgba(217,70,239,0.07); }
.tag-math     { color:#8b5cf6; border-color:rgba(139,92,246,0.3); background:rgba(139,92,246,0.07); }
.tag-bio      { color:#34d399; border-color:rgba(52,211,153,0.3); background:rgba(52,211,153,0.07); }
.tag-general  { color:#fbbf24; border-color:rgba(251,191,36,0.3); background:rgba(251,191,36,0.07); }
.tag-pyq      { color:#f87171; border-color:rgba(248,113,113,0.3);background:rgba(248,113,113,0.07); }
.tag-notes    { color:#a5b4fc; border-color:rgba(165,180,252,0.3);background:rgba(165,180,252,0.07); }
.tag-card     { color:#6ee7b7; border-color:rgba(110,231,183,0.3);background:rgba(110,231,183,0.07); }
.tag-free     { color:#86efac; border-color:rgba(134,239,172,0.3);background:rgba(134,239,172,0.07); }
.tag-new      { color:#fde68a; border-color:rgba(253,230,138,0.3);background:rgba(253,230,138,0.07); }

.dl-footer    { display:flex; align-items:center; justify-content:space-between; gap:0.5rem; margin-top:auto; padding-top:0.6rem; border-top:1px solid rgba(255,255,255,0.06); }
.dl-size      { font-size:0.75rem; color:var(--text-dim); font-family:monospace; }
.dl-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.45rem 1rem;
  background: linear-gradient(90deg,#3b82f6,#8b5cf6);
  color: #fff;
  border-radius: 6px;
  font-size: 0.78rem;
  font-weight: 700;
  border: none;
  cursor: pointer;
  font-family: var(--font);
  transition: opacity var(--transition), transform var(--transition);
  text-decoration: none;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}
.dl-btn:hover { opacity:0.85; transform:translateY(-1px); color:#fff; }
.dl-btn.free  { background:rgba(134,239,172,0.12); color:#86efac; border:1px solid rgba(134,239,172,0.3); }
.dl-btn.free:hover { background:rgba(134,239,172,0.22); }

.dl-coming-soon {
  text-align:center;
  padding:3rem;
  color:var(--text-dim);
  font-size:0.9rem;
  border:1px dashed rgba(255,255,255,0.1);
  border-radius:14px;
}

/* ── UniKeep subdomain styles ───────────────────────────── */
.keep-body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  margin: 0;
  min-height: 100vh;
  background-image:
    linear-gradient(rgba(255,255,255,0.03) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,0.03) 1px,transparent 1px);
  background-size: 40px 40px;
  background-attachment: fixed;
}

/* ── Responsive ─────────────────────────────────────────── */
@media (max-width:1024px) {
  .contact-wrapper { grid-template-columns:1fr; }
}
@media (max-width:768px) {
  .hero        { flex-direction:column; text-align:center; padding-top:7rem; gap:2rem; }
  .hero p      { max-width:100%; }
  .nav-links {
    position: absolute; top:68px; left:0; width:100%;
    background: rgba(15,23,42,0.97);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--glass-border);
    flex-direction: column; text-align:center;
    padding: 1.5rem; gap:1.2rem; display:none;
  }
  .nav-links.active   { display:flex; }
  .menu-toggle        { display:block; }
  .splash-card-boxed  { width:100%; }
  .splash-row         { justify-content:center !important; }
  .updates-hero       { margin:1.5rem; }
  .dl-grid            { grid-template-columns:1fr; }
  .page-header h1     { font-size:2rem; }
}