/* ============ Design Tokens ============ */
:root {
  --bg: #f4f6fb;
  --surface: #ffffff;
  --text: #0b1426;
  --muted: #5a6377;
  --primary: #2563eb;
  --primary-dark: #1e40af;
  --violet: #7c3aed;
  --accent: #f59e0b;
  --green: #10b981;
  --whatsapp: #25d366;
  --border: #e6eaf3;
  --radius: 18px;
  --radius-sm: 11px;
  --shadow: 0 10px 30px rgba(15, 23, 42, 0.07);
  --shadow-lg: 0 24px 55px rgba(15, 23, 42, 0.15);
  --ring: 0 0 0 4px rgba(37, 99, 235, 0.16);
  --nav-h: 72px;
  --topbar-h: 38px;
  --header-h: calc(var(--topbar-h) + var(--nav-h));
  --container: 1200px;
  --hero-dark: #0a1128;
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-h) + 16px);
}

body {
  font-family: var(--font-body), "Hind Siliguri", system-ui, -apple-system, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

::selection {
  background: rgba(37, 99, 235, 0.2);
}

h1,
h2,
h3 {
  text-wrap: balance;
}

:focus-visible {
  outline: none;
  box-shadow: var(--ring);
  border-radius: 6px;
}

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

a {
  color: inherit;
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

.container {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 20px;
}

.section {
  padding: 92px 0;
}

.section.alt {
  background: var(--surface);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.section-head {
  max-width: 720px;
  margin: 0 auto 44px;
  text-align: center;
}

.section-head.left {
  margin-left: 0;
  text-align: left;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: linear-gradient(135deg, rgba(37, 99, 235, 0.12), rgba(124, 58, 237, 0.12));
  border: 1px solid rgba(37, 99, 235, 0.18);
  color: var(--primary);
  font-weight: 600;
  font-size: 0.82rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  padding: 6px 15px;
  border-radius: 999px;
  margin-bottom: 16px;
}

.section-head h2 {
  font-size: clamp(1.7rem, 3.4vw, 2.4rem);
  line-height: 1.25;
  letter-spacing: -0.01em;
  margin-bottom: 14px;
}

.section-head p {
  color: var(--muted);
  font-size: 1.03rem;
  max-width: 660px;
  margin: 0 auto;
}

.section-head.left p {
  margin-left: 0;
}

/* ============ Buttons ============ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 13px 26px;
  border-radius: 999px;
  font-family: inherit;
  font-size: 1rem;
  font-weight: 600;
  text-decoration: none;
  border: 1.5px solid transparent;
  cursor: pointer;
  transition: transform 0.2s, box-shadow 0.2s, background 0.2s, color 0.2s;
}

.btn:hover {
  transform: translateY(-2px);
}

.btn:active {
  transform: translateY(0) scale(0.98);
}

.btn:focus-visible {
  outline: none;
  box-shadow: var(--ring);
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary), var(--violet));
  color: #fff;
  box-shadow: 0 12px 26px rgba(37, 99, 235, 0.32);
}

.btn-primary:hover {
  box-shadow: 0 16px 34px rgba(37, 99, 235, 0.44);
  filter: brightness(1.05);
}

.btn-outline {
  background: transparent;
  color: var(--primary);
  border-color: rgba(37, 99, 235, 0.4);
}

.btn-outline:hover {
  background: rgba(37, 99, 235, 0.08);
}

.btn-light {
  background: #fff;
  color: var(--text);
}

.btn-whatsapp {
  background: var(--whatsapp);
  color: #062b12;
}

.btn-block {
  width: 100%;
}

.btn[disabled],
.btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  transform: none;
  box-shadow: none;
}

/* ============ Header (Topbar + Navbar) ============ */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
}

.topbar {
  height: var(--topbar-h);
  background: var(--hero-dark);
  color: #c3cff0;
  font-size: 0.83rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.topbar-inner {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
}

.topbar a {
  color: #c3cff0;
  text-decoration: none;
  transition: color 0.2s;
}

.topbar a:hover {
  color: #fff;
}

.tb-group {
  display: flex;
  align-items: center;
  gap: 20px;
  min-width: 0;
}

.tb-item {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.tb-socials {
  display: flex;
  align-items: center;
  gap: 12px;
}

.tb-socials a {
  width: 22px;
  height: 22px;
  display: grid;
  place-items: center;
  font-size: 0.75rem;
  border-radius: 6px;
  background: rgba(255, 255, 255, 0.08);
  transition: background 0.2s;
}

.tb-socials a:hover {
  background: var(--primary);
}

.navbar {
  height: var(--nav-h);
  background: rgba(255, 255, 255, 0.94);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border);
  transition: box-shadow 0.25s;
}

.site-header.scrolled .navbar {
  box-shadow: 0 8px 26px rgba(15, 23, 42, 0.09);
}

.nav-inner {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 11px;
  text-decoration: none;
  font-weight: 700;
  font-size: 1.16rem;
  color: var(--text);
  white-space: nowrap;
}

.logo-mark {
  width: 38px;
  height: 38px;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--primary), var(--violet));
  color: #fff;
  display: grid;
  place-items: center;
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  box-shadow: 0 6px 14px rgba(37, 99, 235, 0.3);
  flex-shrink: 0;
}

.logo-img {
  width: 38px;
  height: 38px;
  border-radius: 11px;
  object-fit: contain;
  background: #fff;
  border: 1px solid var(--border);
  flex-shrink: 0;
}

.logo small {
  display: block;
  font-size: 0.68rem;
  font-weight: 500;
  color: var(--muted);
  line-height: 1.1;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 30px;
  list-style: none;
}

.nav-links > li > a:not(.btn) {
  text-decoration: none;
  color: var(--muted);
  font-weight: 500;
  font-size: 0.97rem;
  position: relative;
  padding: 6px 0;
  transition: color 0.2s;
}

.nav-links > li > a:not(.btn)::after {
  content: "";
  position: absolute;
  left: 0;
  right: 100%;
  bottom: 0;
  height: 2.5px;
  border-radius: 2px;
  background: linear-gradient(90deg, var(--primary), var(--violet));
  transition: right 0.25s ease;
}

.nav-links > li > a:not(.btn):hover,
.nav-links > li > a:not(.btn).active {
  color: var(--primary);
}

.nav-links > li > a:not(.btn):hover::after,
.nav-links > li > a:not(.btn).active::after {
  right: 0;
}

/* ============ Nav dropdown (শাখা) ============ */
.nav-drop {
  position: relative;
}

.nav-drop > a .caret {
  display: inline-block;
  font-size: 0.68rem;
  margin-left: 3px;
  transform: translateY(-1px);
  transition: transform 0.25s;
}

.nav-drop:hover > a .caret {
  transform: translateY(-1px) rotate(180deg);
}

.nav-submenu {
  position: absolute;
  top: calc(100% + 14px);
  left: 50%;
  transform: translateX(-50%) translateY(8px);
  min-width: 264px;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 16px;
  box-shadow: var(--shadow-lg);
  padding: 10px;
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 2px;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.2s, transform 0.2s, visibility 0.2s;
  z-index: 60;
}

/* হোভার ব্রিজ (মেনু থেকে ড্রপডাউনে যাওয়ার ফাঁক ভরাট) */
.nav-submenu::before {
  content: "";
  position: absolute;
  top: -14px;
  left: 0;
  right: 0;
  height: 14px;
}

.nav-drop:hover .nav-submenu,
.nav-drop:focus-within .nav-submenu {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(0);
}

.nav-submenu a {
  display: flex;
  align-items: center;
  gap: 11px;
  padding: 10px 12px;
  border-radius: 11px;
  text-decoration: none;
  color: var(--text);
  font-weight: 500;
  font-size: 0.95rem;
  transition: background 0.18s, color 0.18s;
}

.nav-submenu a:hover {
  background: var(--bg);
  color: var(--primary);
}

.sub-emoji {
  width: 34px;
  height: 34px;
  flex-shrink: 0;
  display: grid;
  place-items: center;
  font-size: 1.05rem;
  background: linear-gradient(135deg, rgba(37, 99, 235, 0.12), rgba(124, 58, 237, 0.12));
  border-radius: 10px;
}

.sub-text small {
  display: block;
  font-size: 0.75rem;
  color: var(--muted);
  font-weight: 500;
}

.nav-submenu .sub-all {
  display: block;
  text-align: center;
  color: var(--primary);
  font-weight: 600;
  border-top: 1px solid var(--border);
  border-radius: 0;
  margin-top: 4px;
  padding-top: 12px;
}

.nav-cta {
  padding: 10px 20px;
  font-size: 0.93rem;
}

.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: 0;
  padding: 8px;
  cursor: pointer;
}

.hamburger span {
  width: 24px;
  height: 2.5px;
  background: var(--text);
  border-radius: 2px;
  transition: 0.25s;
}

/* ============ Hero ============ */
.hero {
  position: relative;
  padding: calc(var(--header-h) + 70px) 0 86px;
  background:
    radial-gradient(1100px 480px at 82% -12%, rgba(124, 58, 237, 0.55), transparent 62%),
    radial-gradient(800px 420px at 0% 115%, rgba(37, 99, 235, 0.5), transparent 60%),
    radial-gradient(600px 300px at 55% 120%, rgba(245, 158, 11, 0.16), transparent 60%),
    linear-gradient(140deg, #0a1128 0%, #101b42 55%, #17255e 100%);
  color: #fff;
  overflow: hidden;
}

/* subtle grid + glow overlay */
.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.035) 1px, transparent 1px);
  background-size: 44px 44px;
  mask-image: radial-gradient(720px 480px at 50% 0%, #000 20%, transparent 78%);
  -webkit-mask-image: radial-gradient(720px 480px at 50% 0%, #000 20%, transparent 78%);
  pointer-events: none;
}

.hero .container {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.18);
  backdrop-filter: blur(6px);
  padding: 8px 18px;
  border-radius: 999px;
  font-size: 0.86rem;
  font-weight: 500;
  letter-spacing: 0.02em;
  margin-bottom: 26px;
}

.hero-badge::before {
  content: "";
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--green);
  box-shadow: 0 0 0 4px rgba(16, 185, 129, 0.25);
}

.hero h1 {
  font-size: clamp(2.1rem, 5.2vw, 3.6rem);
  line-height: 1.18;
  letter-spacing: -0.015em;
  max-width: 860px;
  margin-bottom: 20px;
}

.hero-gradient {
  background: linear-gradient(92deg, #fbbf24 0%, #f472b6 55%, #60a5fa 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.hero p.lead {
  max-width: 680px;
  color: #c3cff0;
  font-size: 1.1rem;
  margin-bottom: 32px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 14px;
  margin-bottom: 30px;
}

.hero-note {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 8px;
  margin-bottom: 48px;
}

.hero-note .note-chip {
  font-size: 0.86rem;
  color: #bfcbea;
  background: rgba(255, 255, 255, 0.07);
  border: 1px solid rgba(255, 255, 255, 0.12);
  padding: 6px 13px;
  border-radius: 999px;
}

.stats {
  width: 100%;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--radius);
  padding: 8px 0;
  backdrop-filter: blur(8px);
}

.stat {
  text-align: center;
  padding: 20px 12px;
  position: relative;
}

.stat + .stat::before {
  content: "";
  position: absolute;
  left: 0;
  top: 22%;
  bottom: 22%;
  width: 1px;
  background: rgba(255, 255, 255, 0.14);
}

.stat b {
  display: block;
  font-size: clamp(1.55rem, 3vw, 2.15rem);
  background: linear-gradient(92deg, #fbbf24, #f472b6, #60a5fa);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  line-height: 1.2;
  margin-bottom: 4px;
}

.stat span {
  color: #c3cff0;
  font-size: 0.92rem;
}

/* ============ Grids & Cards ============ */
.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 26px;
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.grid-4 {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

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

.card:hover {
  border-color: rgba(37, 99, 235, 0.28);
}

.badge {
  position: absolute;
  top: 14px;
  left: 14px;
  background: var(--accent);
  color: #422006;
  font-size: 0.76rem;
  font-weight: 700;
  padding: 4px 12px;
  border-radius: 999px;
  z-index: 2;
}

/* ============ Course Card ============ */
.course-card {
  position: relative;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  text-decoration: none;
  color: inherit;
  transition: transform 0.25s, box-shadow 0.25s;
}

.course-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
}

.course-thumb {
  height: 160px;
  display: grid;
  place-items: center;
  font-size: 3.2rem;
  color: #fff;
  position: relative;
  overflow: hidden;
}

.course-thumb::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(380px 200px at 85% 0%, rgba(255, 255, 255, 0.35), transparent 60%);
  mix-blend-mode: overlay;
}

.course-thumb::after {
  content: "";
  position: absolute;
  inset: auto 0 0 0;
  height: 46px;
  background: linear-gradient(180deg, transparent, rgba(255, 255, 255, 0.18));
}

.course-body {
  padding: 20px 20px 22px;
  display: flex;
  flex-direction: column;
  flex: 1;
  gap: 10px;
}

.course-cat {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--primary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.course-body h3 {
  font-size: 1.13rem;
  line-height: 1.4;
}

.course-body p {
  color: var(--muted);
  font-size: 0.93rem;
  flex: 1;
}

.course-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 16px;
  color: var(--muted);
  font-size: 0.86rem;
  border-top: 1px dashed var(--border);
  padding-top: 12px;
}

.course-meta span {
  display: inline-flex;
  align-items: center;
  gap: 5px;
}

.course-foot {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
}

.price {
  font-weight: 700;
  color: var(--primary);
  font-size: 1.05rem;
}

.link-arrow {
  color: var(--primary);
  font-weight: 600;
  font-size: 0.93rem;
}

.arrow-btn {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  background: linear-gradient(135deg, var(--primary), var(--violet));
  color: #fff;
  font-size: 1.05rem;
  transition: transform 0.25s, box-shadow 0.25s;
  box-shadow: 0 8px 18px rgba(37, 99, 235, 0.3);
  flex-shrink: 0;
}

.course-card:hover .arrow-btn {
  transform: translateX(4px);
  box-shadow: 0 10px 22px rgba(37, 99, 235, 0.4);
}

/* ============ Filter chips ============ */
.filter-bar {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px;
  margin-bottom: 38px;
}

.chip {
  padding: 9px 20px;
  border-radius: 999px;
  border: 1.5px solid var(--border);
  background: var(--surface);
  color: var(--muted);
  font-family: inherit;
  font-size: 0.93rem;
  font-weight: 500;
  cursor: pointer;
  text-decoration: none;
  transition: border-color 0.2s, color 0.2s, transform 0.2s, box-shadow 0.2s;
}

.chip:hover {
  border-color: rgba(37, 99, 235, 0.45);
  color: var(--primary);
  transform: translateY(-2px);
  box-shadow: var(--shadow);
}

.chip.active {
  background: linear-gradient(135deg, var(--primary), var(--violet));
  border-color: transparent;
  color: #fff;
  box-shadow: 0 8px 18px rgba(37, 99, 235, 0.32);
}

/* ============ Feature cards ============ */
.feature-card {
  padding: 28px 26px;
  transition: transform 0.25s, box-shadow 0.25s, border-color 0.25s;
}

.feature-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
}

.feature-icon {
  width: 56px;
  height: 56px;
  border-radius: 15px;
  display: grid;
  place-items: center;
  font-size: 1.5rem;
  background: linear-gradient(135deg, rgba(37, 99, 235, 0.14), rgba(124, 58, 237, 0.14));
  border: 1px solid rgba(37, 99, 235, 0.12);
  margin-bottom: 16px;
  transition: transform 0.25s;
}

.feature-card:hover .feature-icon {
  transform: scale(1.08) rotate(-4deg);
}

.feature-card h3 {
  font-size: 1.08rem;
  margin-bottom: 7px;
}

.feature-card p {
  color: var(--muted);
  font-size: 0.94rem;
}

/* ============ Certificate ============ */
.cert-box {
  position: relative;
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 44px;
  align-items: center;
  background:
    radial-gradient(500px 280px at 88% -10%, rgba(124, 58, 237, 0.5), transparent 62%),
    linear-gradient(140deg, #0a1128, #17255e);
  color: #fff;
  border-radius: calc(var(--radius) + 6px);
  padding: 52px 48px;
  overflow: hidden;
}

.cert-box::before {
  content: "";
  position: absolute;
  inset: 0;
  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);
  background-size: 40px 40px;
  pointer-events: none;
}

.cert-box > * {
  position: relative;
}

.cert-box h2 {
  font-size: clamp(1.5rem, 3vw, 2.1rem);
  margin-bottom: 14px;
}

.cert-box > div > p {
  color: #c7d2ec;
  margin-bottom: 22px;
}

.cert-list {
  list-style: none;
  display: grid;
  gap: 12px;
}

.cert-list li {
  display: flex;
  gap: 10px;
  align-items: flex-start;
  color: #e2e8f0;
  font-size: 0.97rem;
}

.cert-list li::before {
  content: "✓";
  flex-shrink: 0;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: rgba(16, 185, 129, 0.2);
  color: #34d399;
  display: grid;
  place-items: center;
  font-weight: 700;
  font-size: 0.82rem;
  margin-top: 3px;
}

.cert-seal {
  background: #fff;
  color: var(--text);
  border-radius: var(--radius);
  padding: 34px 30px;
  text-align: center;
  box-shadow: var(--shadow-lg);
}

.cert-seal .seal {
  width: 92px;
  height: 92px;
  margin: 0 auto 16px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent), #ef4444);
  color: #fff;
  display: grid;
  place-items: center;
  font-size: 2.4rem;
  border: 5px solid #fef3c7;
}

.cert-seal h3 {
  font-size: 1.2rem;
  margin-bottom: 6px;
}

.cert-seal p {
  color: var(--muted);
  font-size: 0.92rem;
}

.cert-id {
  margin-top: 14px;
  font-size: 0.82rem;
  color: var(--muted);
  background: var(--bg);
  border: 1px dashed var(--border);
  border-radius: var(--radius-sm);
  padding: 8px;
}

/* ============ Story cards ============ */
.story-card {
  padding: 28px 26px;
  display: flex;
  flex-direction: column;
  gap: 14px;
  transition: transform 0.25s, box-shadow 0.25s;
}

.story-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
}

.story-top {
  display: flex;
  align-items: center;
  gap: 14px;
}

.story-top img {
  width: 60px;
  height: 60px;
  border-radius: 50%;
  object-fit: cover;
  border: 3px solid rgba(37, 99, 235, 0.2);
}

.story-top b {
  display: block;
  font-size: 1.02rem;
}

.story-top span {
  color: var(--muted);
  font-size: 0.88rem;
}

.stars {
  color: var(--accent);
  letter-spacing: 2px;
  font-size: 0.95rem;
}

.story-card p {
  color: var(--muted);
  font-size: 0.96rem;
}

.income {
  margin-top: auto;
  background: rgba(16, 185, 129, 0.1);
  color: #047857;
  border-radius: var(--radius-sm);
  padding: 8px 14px;
  font-weight: 600;
  font-size: 0.92rem;
}

/* ============ Mentors ============ */
.mentor-card {
  overflow: hidden;
  text-align: center;
  transition: transform 0.25s, box-shadow 0.25s;
}

.mentor-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
}

.mentor-card img {
  width: 100%;
  aspect-ratio: 1 / 1;
  object-fit: cover;
  transition: transform 0.4s;
}

.mentor-card:hover img {
  transform: scale(1.05);
}

.mentor-card .mentor-info {
  padding: 18px 16px 22px;
  position: relative;
}

.mentor-card .mentor-info::before {
  content: "";
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 44px;
  height: 3px;
  border-radius: 3px;
  background: linear-gradient(90deg, var(--primary), var(--violet));
}

.mentor-card h3 {
  font-size: 1.03rem;
}

.mentor-card span {
  color: var(--primary);
  font-size: 0.88rem;
  font-weight: 500;
}

.mentor-card small {
  display: block;
  color: var(--muted);
  font-size: 0.82rem;
  margin-top: 6px;
}

/* ============ Gallery ============ */
.gallery-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}

.gallery-item {
  position: relative;
  border-radius: var(--radius);
  overflow: hidden;
  aspect-ratio: 4 / 3;
  box-shadow: var(--shadow);
  transition: box-shadow 0.3s, transform 0.3s;
}

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

.gallery-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.45s;
}

.gallery-item:hover img {
  transform: scale(1.07);
}

.gallery-caption {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  padding: 30px 16px 13px;
  background: linear-gradient(transparent, rgba(2, 6, 23, 0.88));
  color: #fff;
  font-size: 0.93rem;
  font-weight: 600;
}

/* ============ FAQ ============ */
.faq-list {
  max-width: 800px;
  margin: 0 auto;
  display: grid;
  gap: 14px;
}

.faq-item {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 4px 22px;
  box-shadow: var(--shadow);
  transition: border-color 0.2s, box-shadow 0.2s;
}

.faq-item[open] {
  border-color: rgba(37, 99, 235, 0.3);
  box-shadow: var(--shadow-lg);
}

.faq-item summary {
  cursor: pointer;
  list-style: none;
  font-weight: 600;
  padding: 16px 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 14px;
}

.faq-item summary::-webkit-details-marker {
  display: none;
}

.faq-item summary::after {
  content: "+";
  font-size: 1.4rem;
  color: var(--primary);
  transition: transform 0.25s;
}

.faq-item[open] summary::after {
  transform: rotate(45deg);
}

.faq-item p {
  color: var(--muted);
  padding-bottom: 18px;
  font-size: 0.97rem;
}

/* ============ CTA band ============ */
.cta-band {
  position: relative;
  background:
    radial-gradient(560px 300px at 88% -20%, rgba(255, 255, 255, 0.22), transparent 60%),
    linear-gradient(135deg, var(--primary), var(--violet));
  border-radius: calc(var(--radius) + 6px);
  padding: 52px 44px;
  color: #fff;
  text-align: center;
  overflow: hidden;
  box-shadow: 0 24px 55px rgba(37, 99, 235, 0.35);
}

.cta-band::after {
  content: "";
  position: absolute;
  top: -70px;
  right: -70px;
  width: 240px;
  height: 240px;
  border-radius: 50%;
  border: 34px solid rgba(255, 255, 255, 0.08);
  pointer-events: none;
}

.cta-band > * {
  position: relative;
}

.cta-band h2 {
  font-size: clamp(1.5rem, 3vw, 2.1rem);
  margin-bottom: 12px;
}

.cta-band p {
  color: rgba(255, 255, 255, 0.88);
  max-width: 620px;
  margin: 0 auto 26px;
}

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

/* ============ Page hero (inner pages) ============ */
.page-hero {
  padding: calc(var(--header-h) + 52px) 0 54px;
  background:
    radial-gradient(700px 320px at 90% -30%, rgba(124, 58, 237, 0.45), transparent 60%),
    linear-gradient(140deg, #0a1128, #17255e);
  color: #fff;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.page-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  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);
  background-size: 40px 40px;
  pointer-events: none;
}

.page-hero .container {
  position: relative;
}

.page-hero h1 {
  font-size: clamp(1.7rem, 4vw, 2.6rem);
  margin-bottom: 10px;
}

.page-hero p {
  color: #c7d2ec;
  max-width: 640px;
  margin: 0 auto;
}

/* ============ Course detail ============ */
.course-detail-hero {
  padding: calc(var(--header-h) + 48px) 0 50px;
  color: #fff;
}

.course-detail-hero .crumbs {
  font-size: 0.88rem;
  color: #9fb3dd;
  margin-bottom: 16px;
}

.course-detail-hero .crumbs a {
  color: #9fb3dd;
  text-decoration: none;
}

.course-detail-hero .crumbs a:hover {
  color: #fff;
}

.course-detail-hero h1 {
  font-size: clamp(1.7rem, 4vw, 2.7rem);
  max-width: 760px;
  margin-bottom: 14px;
}

.course-detail-hero .desc {
  color: #dbe4f7;
  max-width: 700px;
  margin-bottom: 22px;
}

.meta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.meta-pill {
  background: rgba(255, 255, 255, 0.12);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 999px;
  padding: 7px 16px;
  font-size: 0.9rem;
}

.course-layout {
  display: grid;
  grid-template-columns: 1fr 340px;
  gap: 32px;
  align-items: start;
  padding: 56px 0 80px;
}

.content-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 30px;
  margin-bottom: 26px;
}

.content-card h2 {
  font-size: 1.3rem;
  margin-bottom: 16px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--border);
  position: relative;
}

.content-card h2::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -1px;
  width: 58px;
  height: 3px;
  border-radius: 3px;
  background: linear-gradient(90deg, var(--primary), var(--violet));
}

.learn-list {
  list-style: none;
  display: grid;
  gap: 11px;
}

.learn-list li {
  display: flex;
  gap: 10px;
  align-items: flex-start;
  color: var(--muted);
  font-size: 0.98rem;
}

.learn-list li::before {
  content: "✔";
  color: var(--green);
  font-weight: 700;
  flex-shrink: 0;
}

/* modules accordion */
.module {
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  margin-bottom: 12px;
  overflow: hidden;
  background: var(--surface);
  transition: box-shadow 0.2s, border-color 0.2s;
}

.module[open] {
  border-color: rgba(37, 99, 235, 0.32);
  box-shadow: var(--shadow);
}

.module summary {
  list-style: none;
  cursor: pointer;
  padding: 17px 18px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 14px;
  font-weight: 600;
  transition: background 0.2s;
}

.module summary:hover {
  background: var(--bg);
}

.module summary::-webkit-details-marker {
  display: none;
}

.module summary::after {
  content: "▾";
  color: var(--primary);
  transition: transform 0.25s;
}

.module[open] summary::after {
  transform: rotate(180deg);
}

.module .module-meta {
  display: flex;
  gap: 14px;
  font-size: 0.84rem;
  color: var(--muted);
  font-weight: 500;
}

.module-topics {
  padding: 0 18px 18px;
  display: grid;
  gap: 8px;
  list-style: none;
}

.module-topics li {
  color: var(--muted);
  font-size: 0.93rem;
  display: flex;
  gap: 9px;
}

.module-topics li::before {
  content: "▸";
  color: var(--primary);
}

/* sidebar */
.sidebar {
  position: sticky;
  top: calc(var(--header-h) + 20px);
  display: grid;
  gap: 20px;
}

.side-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 26px 24px;
  box-shadow: var(--shadow);
}

.side-card .big-price {
  font-size: 1.9rem;
  font-weight: 700;
  color: var(--primary);
}

.side-card .old-price {
  color: var(--muted);
  text-decoration: line-through;
  font-size: 1rem;
  margin-left: 8px;
}

.side-list {
  list-style: none;
  margin-top: 16px;
  display: grid;
  gap: 10px;
}

.side-list li {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  font-size: 0.93rem;
  border-bottom: 1px dashed var(--border);
  padding-bottom: 9px;
}

.side-list li span:first-child {
  color: var(--muted);
}

.side-list li span:last-child {
  font-weight: 600;
}

.side-card .btn + .btn {
  margin-top: 10px;
}

.instructor-row {
  display: flex;
  align-items: center;
  gap: 14px;
}

.instructor-row img {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  object-fit: cover;
}

.instructor-row b {
  display: block;
}

.instructor-row span {
  color: var(--muted);
  font-size: 0.88rem;
}

/* ============ Contact / Forms ============ */
.contact-layout {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 30px;
  align-items: start;
}

.info-card {
  padding: 24px;
  display: flex;
  gap: 16px;
  align-items: flex-start;
  margin-bottom: 16px;
}

.info-icon {
  flex-shrink: 0;
  width: 46px;
  height: 46px;
  border-radius: 12px;
  background: linear-gradient(135deg, rgba(37, 99, 235, 0.14), rgba(124, 58, 237, 0.14));
  display: grid;
  place-items: center;
  font-size: 1.2rem;
}

.info-card b {
  display: block;
  margin-bottom: 3px;
}

.info-card p,
.info-card a {
  color: var(--muted);
  font-size: 0.95rem;
  text-decoration: none;
  word-break: break-word;
}

.info-card a:hover {
  color: var(--primary);
}

.form-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px;
  box-shadow: var(--shadow);
}

.form-card h2 {
  font-size: 1.35rem;
  margin-bottom: 6px;
}

.form-card > p {
  color: var(--muted);
  font-size: 0.95rem;
  margin-bottom: 22px;
}

.form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.field {
  display: flex;
  flex-direction: column;
  gap: 7px;
}

.field.full {
  grid-column: 1 / -1;
}

.field label {
  font-size: 0.9rem;
  font-weight: 600;
}

.field label span {
  color: #ef4444;
}

.field input,
.field select,
.field textarea {
  font-family: inherit;
  font-size: 0.97rem;
  color: var(--text);
  padding: 12px 14px;
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--bg);
  outline: none;
  transition: border-color 0.2s, box-shadow 0.2s;
}

.field input:focus,
.field select:focus,
.field textarea:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 4px rgba(37, 99, 235, 0.12);
  background: #fff;
}

.field textarea {
  resize: vertical;
  min-height: 120px;
}

.form-status {
  grid-column: 1 / -1;
  border-radius: var(--radius-sm);
  padding: 12px 16px;
  font-size: 0.94rem;
}

.form-status.ok {
  background: rgba(16, 185, 129, 0.12);
  color: #047857;
  border: 1px solid rgba(16, 185, 129, 0.35);
}

.form-status.err {
  background: rgba(239, 68, 68, 0.1);
  color: #b91c1c;
  border: 1px solid rgba(239, 68, 68, 0.35);
}

.note {
  font-size: 0.85rem;
  color: var(--muted);
  margin-top: 12px;
}

/* ============ About page ============ */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: center;
}

.about-visual {
  position: relative;
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}

.about-visual::before {
  content: "";
  position: absolute;
  top: -22px;
  left: -22px;
  width: 170px;
  height: 170px;
  border-radius: 34px;
  background: linear-gradient(135deg, rgba(37, 99, 235, 0.3), rgba(124, 58, 237, 0.3));
  filter: blur(16px);
  z-index: -1;
}

.about-visual::after {
  content: "";
  position: absolute;
  bottom: -18px;
  right: -18px;
  width: 120px;
  height: 120px;
  border-radius: 28px;
  background: linear-gradient(135deg, rgba(245, 158, 11, 0.28), rgba(239, 68, 68, 0.26));
  filter: blur(16px);
  z-index: -1;
}

.about-grid > * {
  position: relative;
}

.about-visual img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
}

.about-text h2 {
  font-size: clamp(1.5rem, 3vw, 2.1rem);
  margin-bottom: 14px;
}

.about-text p {
  color: var(--muted);
  margin-bottom: 14px;
}

.value-list {
  list-style: none;
  display: grid;
  gap: 12px;
  margin-top: 18px;
}

.value-list li {
  display: flex;
  gap: 11px;
  font-weight: 500;
}

.value-list li::before {
  content: "★";
  color: var(--accent);
}

/* ============ Footer ============ */
.footer {
  position: relative;
  background: #0a1128;
  color: #aab7d4;
  padding: 64px 0 0;
  margin-top: 20px;
}

.footer::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--primary), var(--violet), var(--accent));
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
  gap: 34px;
  padding-bottom: 44px;
}

.footer h4 {
  color: #fff;
  font-size: 1.02rem;
  margin-bottom: 16px;
}

.footer .logo {
  color: #fff;
  margin-bottom: 14px;
}

.footer p {
  font-size: 0.93rem;
  line-height: 1.75;
}

.footer ul {
  list-style: none;
  display: grid;
  gap: 10px;
}

.footer ul a {
  text-decoration: none;
  color: #aab7d4;
  font-size: 0.94rem;
  transition: color 0.2s;
}

.footer ul a:hover {
  color: #fff;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding: 20px 0;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  justify-content: space-between;
  font-size: 0.88rem;
}

/* ============ Floating WhatsApp ============ */
.wa-float {
  position: fixed;
  right: 22px;
  bottom: 22px;
  z-index: 90;
  display: inline-flex;
  align-items: center;
  gap: 9px;
  background: var(--whatsapp);
  color: #fff;
  padding: 12px 18px;
  border-radius: 999px;
  font-weight: 600;
  font-size: 0.93rem;
  text-decoration: none;
  box-shadow: 0 14px 34px rgba(37, 211, 102, 0.45);
  transition: transform 0.25s, box-shadow 0.25s;
}

.wa-float:hover {
  transform: translateY(-3px);
  box-shadow: 0 18px 42px rgba(37, 211, 102, 0.55);
}

.socials {
  display: flex;
  gap: 10px;
  margin-top: 16px;
}

.socials a {
  width: 38px;
  height: 38px;
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.08);
  display: grid;
  place-items: center;
  text-decoration: none;
  font-size: 0.85rem;
  color: #fff;
  transition: background 0.2s;
}

.socials a:hover {
  background: var(--primary);
}

/* ============ Auth (Login) ============ */
.auth-wrap {
  min-height: calc(100vh - var(--header-h));
  display: grid;
  place-items: center;
  padding: calc(var(--header-h) + 40px) 20px 60px;
  background:
    radial-gradient(760px 380px at 85% -10%, rgba(124, 58, 237, 0.5), transparent 60%),
    radial-gradient(560px 320px at 0% 110%, rgba(37, 99, 235, 0.45), transparent 60%),
    linear-gradient(140deg, #0a1128, #17255e);
}

.auth-card {
  width: 100%;
  max-width: 440px;
  background: #fff;
  border-radius: 22px;
  padding: 38px 34px;
  box-shadow: 0 30px 70px rgba(2, 6, 23, 0.45);
  position: relative;
  overflow: hidden;
}

.auth-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--primary), var(--violet), var(--accent));
}

.demo-box {
  background: var(--bg);
  border: 1px dashed var(--border);
  border-radius: 12px;
  padding: 14px;
  font-size: 0.88rem;
  color: var(--muted);
  margin-top: 18px;
  line-height: 1.9;
}

/* ============ Admin dashboard ============ */
.admin-shell {
  padding: calc(var(--header-h) + 30px) 20px 70px;
}

.admin-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 14px;
  flex-wrap: wrap;
  margin-bottom: 22px;
}

.tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 24px;
  background: #fff;
  border: 1px solid var(--border);
  padding: 8px;
  border-radius: 14px;
}

.tab-btn {
  border: 0;
  background: none;
  font-family: inherit;
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--muted);
  padding: 9px 18px;
  border-radius: 10px;
  cursor: pointer;
  transition: 0.2s;
}

.tab-btn:hover {
  color: var(--primary);
}

.tab-btn.active {
  background: linear-gradient(135deg, var(--primary), var(--violet));
  color: #fff;
}

.panel {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  box-shadow: var(--shadow);
}

.table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.93rem;
}

.table th,
.table td {
  text-align: left;
  padding: 11px 12px;
  border-bottom: 1px solid var(--border);
  vertical-align: top;
}

.table th {
  color: var(--muted);
  font-size: 0.82rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.table tbody tr {
  transition: background 0.15s;
}

.table tbody tr:hover {
  background: var(--bg);
}

.module-editor {
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 16px;
  margin-bottom: 14px;
  background: var(--bg);
}

.module-editor-head {
  display: flex;
  justify-content: space-between;
  gap: 10px;
  align-items: center;
  margin-bottom: 12px;
  font-weight: 600;
}

.icon-btn {
  border: 0;
  background: #fee2e2;
  color: #b91c1c;
  border-radius: 8px;
  padding: 6px 12px;
  cursor: pointer;
  font-family: inherit;
  font-weight: 600;
  font-size: 0.86rem;
}

.icon-btn:hover {
  background: #fecaca;
}

.mini-btn {
  border: 1px solid var(--border);
  background: #fff;
  color: var(--primary);
  border-radius: 8px;
  padding: 8px 15px;
  cursor: pointer;
  font-family: inherit;
  font-weight: 600;
  font-size: 0.9rem;
}

.mini-btn:hover {
  border-color: var(--primary);
}

.check-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(230px, 1fr));
  gap: 10px;
}

.check-item {
  display: flex;
  gap: 9px;
  align-items: center;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 10px 13px;
  font-size: 0.92rem;
  cursor: pointer;
}

.toast {
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: 300;
  padding: 13px 20px;
  border-radius: 12px;
  color: #fff;
  box-shadow: var(--shadow-lg);
  font-weight: 600;
  font-size: 0.94rem;
}

.toast.ok {
  background: #059669;
}

.toast.err {
  background: #dc2626;
}

/* ============ Student dashboard ============ */
.student-grid {
  display: grid;
  grid-template-columns: 0.85fr 1.15fr;
  gap: 28px;
  align-items: start;
}

.module-body {
  padding: 4px 18px 18px;
  display: grid;
  gap: 14px;
}

.no-video {
  background: rgba(245, 158, 11, 0.1);
  border: 1px dashed rgba(245, 158, 11, 0.5);
  color: #92400e;
  border-radius: 10px;
  padding: 12px 14px;
  font-size: 0.92rem;
}

/* ============ Video player ============ */
.video-frame {
  position: relative;
  padding-top: 56.25%;
  border-radius: 14px;
  overflow: hidden;
  background: #000;
  box-shadow: 0 14px 34px rgba(2, 6, 23, 0.35);
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.video-frame iframe,
.video-frame video {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  border: 0;
}

/* ============ Certificate ============ */
.cert-card {
  background: linear-gradient(140deg, #fffdf7, #fff8e7);
  border: 3px solid var(--accent);
  border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
  overflow: hidden;
}

.cert-card-inner {
  margin: 12px;
  border: 1.5px dashed var(--accent);
  border-radius: 12px;
  padding: 34px 26px;
  text-align: center;
}

.cert-ribbon {
  display: inline-block;
  background: linear-gradient(135deg, var(--accent), #ef4444);
  color: #fff;
  font-weight: 700;
  font-size: 0.9rem;
  padding: 6px 18px;
  border-radius: 999px;
  letter-spacing: 0.03em;
}

.cert-card-inner h2 {
  font-size: clamp(1.5rem, 3vw, 2rem);
  color: var(--primary-dark);
}

.cert-course {
  font-size: 1.15rem;
  font-weight: 700;
  margin: 12px 0;
}

.cert-meta {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 8px 22px;
  color: var(--muted);
  font-size: 0.9rem;
  margin-bottom: 10px;
}

.cert-org {
  font-weight: 600;
  color: var(--text);
  margin-bottom: 18px;
}

@media print {
  .navbar,
  .footer,
  .page-hero,
  .cert-card .btn,
  .toast {
    display: none !important;
  }

  .cert-card {
    border-color: #000;
    box-shadow: none;
  }
}

/* ============ Certificate verification page ============ */
.verify-wrap {
  display: flex;
  flex-direction: column;
  gap: 26px;
  max-width: 820px;
  margin: 0 auto;
}

.verify-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 26px;
}

.verify-form {
  display: flex;
  gap: 12px;
}

.verify-form input {
  flex: 1;
  min-width: 0;
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 12px 16px;
  font-family: inherit;
  font-size: 1rem;
  color: var(--text);
  background: #fff;
  transition: border-color 0.2s, box-shadow 0.2s;
}

.verify-form input:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: var(--ring);
}

.verify-form-big input {
  padding: 14px 18px;
  font-size: 1.05rem;
}

.verify-form button {
  flex-shrink: 0;
}

.verify-note {
  color: var(--muted);
  font-size: 0.92rem;
  margin-top: 12px;
  text-align: center;
}

.verify-steps {
  display: grid;
  gap: 14px;
}

.step {
  display: flex;
  gap: 16px;
  align-items: flex-start;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 18px 20px;
}

.step-num {
  width: 38px;
  height: 38px;
  flex-shrink: 0;
  border-radius: 50%;
  display: grid;
  place-items: center;
  background: linear-gradient(135deg, var(--primary), var(--violet));
  color: #fff;
  font-weight: 700;
}

.step b {
  display: block;
  margin-bottom: 2px;
}

.step p {
  color: var(--muted);
  font-size: 0.92rem;
}

.verify-result {
  display: flex;
  flex-direction: column;
  gap: 18px;
  align-items: center;
}

.verify-result .cert-card {
  width: 100%;
}

.verify-valid-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(16, 185, 129, 0.12);
  border: 1px solid rgba(16, 185, 129, 0.35);
  color: #047857;
  font-weight: 700;
  padding: 9px 20px;
  border-radius: 999px;
  font-size: 0.95rem;
}

.verify-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  justify-content: center;
}

.verify-invalid,
.verify-disabled {
  text-align: center;
  background: var(--surface);
  border: 1px solid #fecaca;
  border-radius: var(--radius);
  padding: 34px 26px;
  color: var(--text);
}

.verify-disabled {
  border-color: var(--border);
}

.verify-invalid h2 {
  font-size: 1.25rem;
  margin-bottom: 8px;
  color: #b91c1c;
}

.verify-invalid p {
  color: var(--muted);
  max-width: 560px;
  margin: 0 auto;
}

.cert-cta {
  margin-top: 22px;
}

@media print {
  .verify-actions,
  .verify-valid-badge,
  .verify-card,
  .verify-form,
  .verify-steps,
  .verify-note,
  .verify-disabled,
  .verify-invalid,
  .content-card {
    display: none !important;
  }

  .verify-result {
    gap: 0;
  }
}

/* ============ Responsive ============ */
@media (max-width: 1020px) {
  .grid-4 {
    grid-template-columns: repeat(2, 1fr);
  }

  .course-layout {
    grid-template-columns: 1fr;
  }

  .sidebar {
    position: static;
  }

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

@media (max-width: 900px) {
  :root {
    --topbar-h: 0px;
  }

  .topbar {
    display: none;
  }

  .nav-links {
    position: absolute;
    top: var(--nav-h);
    left: 0;
    right: 0;
    background: #fff;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 8px 20px 18px;
    border-bottom: 1px solid var(--border);
    box-shadow: var(--shadow-lg);
    display: none;
  }

  .nav-links.open {
    display: flex;
  }

  .nav-links li a {
    display: block;
    padding: 13px 0;
    border-bottom: 1px solid var(--border);
  }

  /* মোবাইলে ড্রপডাউন দেখাবো না — "শাখা" লিংকে ট্যাপ করলে সোজা শাখা পেজে যাবে */
  .nav-submenu {
    display: none;
  }

  .nav-links .nav-cta {
    margin-top: 14px;
    text-align: center;
    border-bottom: 0;
  }

  .hamburger {
    display: flex;
  }

  .grid-3,
  .grid-2,
  .gallery-grid,
  .contact-layout,
  .about-grid,
  .cert-box,
  .student-grid {
    grid-template-columns: 1fr;
  }

  .cert-box {
    padding: 34px 26px;
  }

  .stats {
    grid-template-columns: repeat(2, 1fr);
    gap: 22px 12px;
  }

  .section {
    padding: 58px 0;
  }
}

@media (max-width: 560px) {
  .grid-4 {
    grid-template-columns: 1fr;
  }

  .verify-form {
    flex-direction: column;
  }

  .verify-form button {
    width: 100%;
  }

  .wa-float span {
    display: none;
  }

  .wa-float {
    padding: 13px;
  }

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

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

  .hero {
    padding-top: calc(var(--nav-h) + 52px);
  }

  .btn {
    width: 100%;
  }

  .hero-actions {
    flex-direction: column;
  }

  .cta-actions {
    flex-direction: column;
    align-items: stretch;
  }

  .form-card,
  .content-card {
    padding: 22px 18px;
  }
}

/* ---------- এডমিন: ছবি ফিল্ড ও কনটেন্ট এডিটর ---------- */
.image-field {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}

.image-field input {
  flex: 1;
  min-width: 200px;
}

.image-preview {
  width: 58px;
  height: 58px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: #fff;
  display: grid;
  place-items: center;
  overflow: hidden;
  flex-shrink: 0;
  font-size: 1.4rem;
}

.image-preview img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

details.module-editor > summary {
  list-style: none;
  margin-bottom: 0;
}

details.module-editor > summary::-webkit-details-marker {
  display: none;
}

details.module-editor[open] > summary {
  margin-bottom: 14px;
}

/* ============ Branches (????) ============ */
.branch-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 22px;
}

.branch-card {
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: 26px;
  text-decoration: none;
  overflow: hidden;
}

.branch-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 18px 40px rgba(15, 23, 42, 0.12);
}

.branch-thumb {
  position: relative;
  margin: -26px -26px 6px;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  background: var(--bg);
}

.branch-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.35s;
}

.branch-thumb::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 46%;
  background: linear-gradient(to top, rgba(10, 17, 40, 0.5), transparent);
  pointer-events: none;
}

.branch-thumb-badge {
  position: absolute;
  top: 12px;
  left: 12px;
  z-index: 1;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: linear-gradient(135deg, var(--primary), var(--violet));
  color: #fff;
  font-size: 0.74rem;
  font-weight: 600;
  padding: 5px 12px;
  border-radius: 999px;
  box-shadow: 0 8px 18px rgba(37, 99, 235, 0.35);
}

.branch-thumb-tag {
  position: absolute;
  left: 14px;
  bottom: 12px;
  z-index: 1;
  color: #fff;
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.01em;
}

.branch-card:hover .branch-thumb img {
  transform: scale(1.05);
}

.branch-emoji {
  width: 58px;
  height: 58px;
  display: grid;
  place-items: center;
  font-size: 1.75rem;
  background: linear-gradient(135deg, rgba(37, 99, 235, 0.12), rgba(124, 58, 237, 0.12));
  border: 1px solid rgba(37, 99, 235, 0.18);
  border-radius: 14px;
}

.branch-card h3 {
  margin: 0;
  font-size: 1.15rem;
  line-height: 1.4;
}

.branch-tag {
  color: var(--primary);
  font-weight: 600;
  font-size: 0.9rem;
}

.branch-addr {
  color: var(--muted);
  font-size: 0.93rem;
  margin: 0;
}

.branch-meta {
  display: flex;
  flex-direction: column;
  gap: 6px;
  color: var(--muted);
  font-size: 0.9rem;
  border-top: 1px dashed var(--border);
  padding-top: 12px;
}

.branch-batches {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.branch-batches span {
  background: linear-gradient(135deg, rgba(37, 99, 235, 0.08), rgba(124, 58, 237, 0.08));
  border: 1px dashed rgba(37, 99, 235, 0.28);
  border-radius: 10px;
  padding: 8px 12px;
  font-size: 0.88rem;
  color: var(--text);
}

/* Branch detail */
.branch-hero .crumbs {
  font-size: 0.88rem;
  color: #9fb3dd;
  margin-bottom: 18px;
}

.branch-hero .crumbs a {
  color: #9fb3dd;
  text-decoration: none;
}

.branch-hero .crumbs a:hover {
  color: #fff;
}

.branch-hero-emoji {
  width: 74px;
  height: 74px;
  margin: 0 auto 16px;
  display: grid;
  place-items: center;
  font-size: 2.2rem;
  background: rgba(255, 255, 255, 0.12);
  border: 1px solid rgba(255, 255, 255, 0.22);
  border-radius: 18px;
}

.branch-layout {
  padding: 56px 0 40px;
}

.branch-layout-inner {
  display: grid;
  grid-template-columns: 1fr 360px;
  gap: 32px;
  align-items: start;
}

.branch-detail-main {
  display: flex;
  flex-direction: column;
  gap: 26px;
}

.branch-photo {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  border-radius: var(--radius);
  border: 1px solid var(--border);
}

.info-list {
  display: grid;
  gap: 14px;
}

.info-row {
  display: flex;
  gap: 14px;
  align-items: flex-start;
  padding: 14px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--bg);
}

.info-ico {
  width: 44px;
  height: 44px;
  flex-shrink: 0;
  display: grid;
  place-items: center;
  font-size: 1.2rem;
  background: linear-gradient(135deg, rgba(37, 99, 235, 0.12), rgba(124, 58, 237, 0.12));
  border-radius: 12px;
}

.info-row b {
  display: block;
  margin-bottom: 3px;
}

.info-row span {
  color: var(--muted);
  font-size: 0.93rem;
  line-height: 1.6;
}

.info-action {
  display: inline-block;
  margin-top: 6px;
  color: var(--primary);
  font-weight: 600;
  font-size: 0.9rem;
}

.branch-batch-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
  gap: 16px;
}

.batch-card {
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 20px;
  background: var(--surface);
}

.batch-day {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-weight: 600;
  color: var(--primary);
  background: linear-gradient(135deg, rgba(37, 99, 235, 0.1), rgba(124, 58, 237, 0.1));
  border-radius: 999px;
  padding: 6px 13px;
  font-size: 0.9rem;
  margin-bottom: 12px;
}

.batch-card p {
  color: var(--muted);
  font-size: 0.92rem;
  margin: 0;
  line-height: 1.7;
}

.branch-side-card p {
  margin-bottom: 18px;
}

.branch-side .btn-block {
  margin-bottom: 10px;
}

@media (max-width: 940px) {
  .branch-layout-inner {
    grid-template-columns: 1fr;
  }
}