:root {
  --bg: #f8f9fd;
  --text: #1a1c2c;
  --muted: #555c79;
  --brand: #2f5bff;
  --brand-dark: #1d3bc0;
  --surface: #ffffff;
  --surface-alt: #eef2ff;
  --border: #d9e0ff;
  --shadow: 0 14px 35px rgba(25, 44, 110, 0.12);
  --radius: 16px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: "Inter", sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.6;
  position: relative;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  background-image:
    radial-gradient(circle at 10% 15%, rgba(88, 122, 255, 0.12), transparent 32%),
    radial-gradient(circle at 90% 80%, rgba(163, 110, 255, 0.1), transparent 30%),
    url("assets/images/bg-pattern.svg");
  background-size: auto, auto, cover;
  background-position: center;
  opacity: 0.22;
}

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

.container {
  width: min(1120px, calc(100% - 2rem));
  margin-inline: auto;
}

.section {
  padding: 4.5rem 0;
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.65s ease, transform 0.65s ease;
}

.section.in-view {
  opacity: 1;
  transform: translateY(0);
}

.section-alt {
  background: var(--surface-alt);
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 30;
  background: rgba(248, 249, 253, 0.92);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
}

.nav-wrap {
  min-height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.brand {
  font-weight: 800;
  letter-spacing: 0.02em;
}

.site-nav {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

.site-nav a {
  font-weight: 500;
  color: var(--muted);
  transition: color 0.25s ease, transform 0.25s ease;
}

.site-nav a:hover {
  color: var(--brand);
  transform: translateY(-1px);
}

.menu-toggle {
  display: none;
}

.hero {
  padding-top: 5.5rem;
  background-image: linear-gradient(rgba(248, 249, 253, 0.88), rgba(248, 249, 253, 0.9)), url("assets/images/hero-bg.svg");
  background-size: cover;
  background-position: center;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 2rem;
  align-items: center;
}

.eyebrow {
  margin: 0 0 0.5rem;
  font-size: 0.9rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--brand);
  font-weight: 700;
}

h1,
h2,
h3 {
  margin-top: 0;
  line-height: 1.2;
}

h1 {
  font-size: clamp(2rem, 5vw, 3.25rem);
  margin-bottom: 1rem;
}

h2 {
  font-size: clamp(1.55rem, 3vw, 2.2rem);
  margin-bottom: 1rem;
}

.lead {
  color: var(--muted);
  font-size: 1.08rem;
  max-width: 54ch;
}

.hero-actions,
.cta-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1.5rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid transparent;
  border-radius: 999px;
  padding: 0.72rem 1.2rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s ease;
}

.btn-primary {
  background: var(--brand);
  color: #fff;
}

.btn-primary:hover {
  background: var(--brand-dark);
}

.btn-secondary {
  background: transparent;
  border-color: var(--border);
}

.btn-secondary:hover {
  border-color: var(--brand);
  color: var(--brand);
}

.hero-card,
.program-card,
.course-card,
.testimonial-card,
.faq-item,
.contact-form,
.payment-form {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.hero-card {
  padding: 1.4rem;
}

.hero-card ul {
  margin: 0;
  padding-left: 1.1rem;
}

.program-grid,
.courses-grid,
.testimonials-grid {
  display: grid;
  gap: 1rem;
}

.program-grid {
  grid-template-columns: repeat(auto-fit, minmax(170px, 1fr));
}

.program-card {
  text-align: center;
  padding: 1rem;
  font-weight: 600;
}

.section-head p {
  color: var(--muted);
  margin-top: -0.25rem;
}

.courses-grid {
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
}

.courses-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
  align-items: start;
  transition: grid-template-columns 0.35s ease;
}

.courses-layout.payment-active {
  grid-template-columns: minmax(0, 1fr) 360px;
}

.course-card {
  padding: 1.2rem;
  display: grid;
  gap: 0.8rem;
  transition: transform 0.28s ease, box-shadow 0.28s ease;
}

.course-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 18px 35px rgba(25, 44, 110, 0.2);
}

.course-image {
  display: block;
  width: 100%;
  height: 170px;
  object-fit: cover;
  object-position: center;
  border-radius: 12px;
  border: 1px solid var(--border);
  background: #f2f5ff;
}

.course-meta {
  color: var(--muted);
  font-size: 0.95rem;
}

.price {
  font-size: 1.2rem;
  font-weight: 700;
}

.testimonials-grid {
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
}

.testimonial-card {
  padding: 1rem;
}

.testimonial-card span {
  display: block;
  margin-top: 0.5rem;
  color: var(--muted);
}

.faq-list {
  display: grid;
  gap: 0.9rem;
}

.faq-item {
  padding: 1rem 1.1rem;
}

.faq-item h3 {
  margin-bottom: 0.5rem;
  font-size: 1.05rem;
}

.faq-item p {
  margin: 0;
  color: var(--muted);
}

.cta {
  text-align: center;
  background: linear-gradient(135deg, #eff3ff, #f7f1ff);
}

.cta p {
  margin-inline: auto;
  max-width: 60ch;
  color: var(--muted);
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
}

.contact-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 0.5rem;
}

.contact-form,
.payment-form {
  padding: 1rem;
}

.contact-form label,
.payment-form label {
  display: grid;
  gap: 0.35rem;
  font-weight: 500;
  margin-bottom: 0.8rem;
}

input,
select,
textarea {
  width: 100%;
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 0.65rem 0.75rem;
  font: inherit;
}

input:focus,
select:focus,
textarea:focus {
  outline: 2px solid #98adff;
  border-color: transparent;
}

.form-status {
  min-height: 1.2em;
  margin: 0.6rem 0 0;
  color: var(--brand-dark);
  font-size: 0.95rem;
}

.site-footer {
  padding: 1.2rem 0 2rem;
  color: var(--muted);
}

.payment-panel {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 1rem;
  position: sticky;
  top: 88px;
  opacity: 1;
  transform: translateX(0);
  transition: opacity 0.32s ease, transform 0.32s ease;
}

.payment-panel.is-hidden {
  opacity: 0;
  transform: translateX(24px);
  visibility: hidden;
  pointer-events: none;
  max-height: 0;
  overflow: hidden;
  padding-top: 0;
  padding-bottom: 0;
  border-width: 0;
  box-shadow: none;
}

.selected-course {
  margin: 0 0 1rem;
  color: var(--muted);
}

.row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.8rem;
}

.buy-now {
  position: relative;
  overflow: hidden;
}

.buy-now::after {
  content: "";
  position: absolute;
  inset: 0;
  transform: translateX(-120%);
  background: linear-gradient(100deg, transparent 10%, rgba(255, 255, 255, 0.32) 50%, transparent 90%);
}

.buy-now:hover::after {
  transition: transform 0.5s ease;
  transform: translateX(120%);
}

.buy-now.buying {
  animation: buyPulse 0.5s ease;
}

@keyframes buyPulse {
  0% { transform: scale(1); }
  50% { transform: scale(1.04); }
  100% { transform: scale(1); }
}

.admin-main {
  padding: 3rem 0;
}

.admin-locked .site-header,
.admin-locked .admin-main {
  pointer-events: none;
  user-select: none;
  filter: blur(2px);
}

.admin-gate {
  position: fixed;
  inset: 0;
  z-index: 1000;
  display: grid;
  place-items: center;
  background: rgba(11, 16, 37, 0.58);
  padding: 1rem;
}

.admin-gate.hidden {
  display: none;
}

.admin-gate-card {
  width: min(420px, 100%);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 1.2rem;
}

.admin-gate-card h2 {
  margin-bottom: 0.5rem;
}

.admin-gate-card p {
  color: var(--muted);
  margin-top: 0;
}

.admin-layout {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 1.2rem;
}

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

.admin-card h2 {
  margin-bottom: 0.8rem;
}

.admin-list {
  display: grid;
  gap: 0.7rem;
}

.admin-item {
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 0.8rem;
}

.admin-item h3 {
  margin: 0 0 0.4rem;
  font-size: 1rem;
}

.admin-course-thumb {
  width: 100%;
  height: 120px;
  object-fit: cover;
  border-radius: 10px;
  border: 1px solid var(--border);
  margin-bottom: 0.6rem;
}

.admin-item p {
  margin: 0.15rem 0;
  color: var(--muted);
  font-size: 0.92rem;
}

.admin-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 0.6rem;
}

.btn-danger {
  background: #fff1f1;
  color: #b32020;
  border: 1px solid #f6b2b2;
}

.btn-danger:hover {
  background: #ffdede;
}

.admin-toolbar {
  display: flex;
  gap: 0.6rem;
  flex-wrap: wrap;
  margin-top: 0.6rem;
}

.image-dropzone {
  border: 2px dashed var(--border);
  border-radius: 12px;
  padding: 0.85rem;
  text-align: center;
  color: var(--muted);
  background: #f9fbff;
  cursor: pointer;
  margin-bottom: 0.8rem;
}

.image-dropzone.active {
  border-color: var(--brand);
  background: #eef3ff;
  color: var(--brand-dark);
}

.image-preview-wrap {
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 0.5rem;
  background: #fbfcff;
  margin-bottom: 0.8rem;
}

.image-preview {
  display: none;
  width: 100%;
  height: 170px;
  object-fit: cover;
  border-radius: 10px;
}

.image-preview.ready {
  display: block;
}

@media (max-width: 900px) {
  .hero-grid,
  .contact-grid,
  .admin-layout,
  .courses-layout {
    grid-template-columns: 1fr;
  }

  .payment-panel {
    position: static;
  }
}

@media (max-width: 760px) {
  .menu-toggle {
    display: inline-flex;
    border: 1px solid var(--border);
    background: var(--surface);
    border-radius: 10px;
    padding: 0.45rem 0.65rem;
    cursor: pointer;
  }

  .site-nav {
    position: absolute;
    inset: 72px 1rem auto;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 0.85rem;
    display: none;
    box-shadow: var(--shadow);
  }

  .site-nav.open {
    display: grid;
  }
}