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

body {
  margin: 0;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: #f5f7fb;
  color: #202330;
}

/* Color palette inspired by vibrant education / ALNOVA style */
:root {
  --alnova-primary: #5a4bff;
  --alnova-secondary: #ff6fb5;
  --alnova-accent: #25c4ff;
  --alnova-dark: #151827;
  --alnova-bg: #f5f7fb;
  --alnova-border: #e0e4f2;
}

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

a {
  color: var(--alnova-primary);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

.container {
  width: min(1120px, 100% - 2rem);
  margin: 0 auto;
}

/* Site header */
.site-header {
  background: #ffffff;
  border-bottom: 1px solid var(--alnova-border);
  position: sticky;
  top: 0;
  z-index: 10;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: .75rem 0;
  gap: 1rem;
}

.logo-area {
  display: flex;
  align-items: center;
  gap: .75rem;
}

.logo-img {
  width: 60px;
  height: 60px;
  object-fit: contain;
}

.logo-text {
  display: flex;
  flex-direction: column;
}

.logo-title {
  font-weight: 700;
  letter-spacing: .04em;
  font-size: 1rem;
  text-transform: uppercase;
  color: var(--alnova-dark);
}

.logo-subtitle {
  font-size: .8rem;
  color: #6b7280;
}

.main-nav a {
  margin-left: 1rem;
  font-size: .9rem;
  font-weight: 500;
  color: #4b5563;
}

.main-nav a:hover {
  color: var(--alnova-primary);
}

.admin-link {
  padding: .35rem .75rem;
  border-radius: 999px;
  border: 1px solid var(--alnova-border);
  background: linear-gradient(120deg, rgba(90,75,255,.08), rgba(255,111,181,.08));
}

/* Hero */
.hero {
  background: radial-gradient(circle at top left, rgba(90,75,255,.12), transparent 55%),
              radial-gradient(circle at bottom right, rgba(255,111,181,.16), transparent 55%);
  padding: 2.5rem 0 2rem;
}

.hero-inner {
  display: grid;
  grid-template-columns: minmax(0, 1.3fr) minmax(0, 1fr);
  gap: 2rem;
  align-items: center;
}

.hero h1 {
  font-size: clamp(2rem, 3vw, 2.6rem);
  margin-bottom: .75rem;
  color: var(--alnova-dark);
}

.hero p {
  font-size: 1rem;
  line-height: 1.7;
  max-width: 36rem;
  color: #4b5563;
}

.hero-tags {
  list-style: none;
  padding: 0;
  margin: 1.25rem 0 0;
  display: flex;
  flex-wrap: wrap;
  gap: .5rem;
}

.hero-tags li {
  font-size: .8rem;
  padding: .3rem .7rem;
  border-radius: 999px;
  border: 1px solid rgba(21,24,39,0.05);
  background: rgba(255,255,255,.9);
}

/* Slider */
.hero-slider {
  background: #111827;
  border-radius: 1.25rem;
  padding: .75rem;
  box-shadow: 0 14px 40px rgba(15,23,42,.35);
  position: relative;
  overflow: hidden;
}

.slider {
  position: relative;
  border-radius: .9rem;
  overflow: hidden;
}

.slide {
  display: none;
}

.slide.active {
  display: block;
}

.slide img {
  width: 100%;
  height: 260px;
  object-fit: cover;
}

.slide-caption {
  position: absolute;
  left: 1rem;
  bottom: 1rem;
  padding: .35rem .7rem;
  border-radius: 999px;
  background: rgba(15,23,42,.75);
  color: #e5e7eb;
  font-size: .8rem;
}

.slide-placeholder {
  height: 340px;
  display: grid;
  place-items: center;
  color: #9ca3af;
  background: repeating-linear-gradient(135deg, #020617, #020617 4px, #111827 4px, #111827 8px);
  font-size: .9rem;
}

/* Courses */
.courses {
  padding: 2.5rem 0 2rem;
}

.courses h2 {
  font-size: 1.6rem;
  margin-bottom: 1.5rem;
  color: var(--alnova-dark);
}

.course-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
  gap: 1.25rem;
}

.course-card {
  background: #ffffff;
  border-radius: 1rem;
  padding: 1rem 1.1rem;
  border: 1px solid var(--alnova-border);
  box-shadow: 0 10px 24px rgba(15,23,42,.04);
  display: flex;
  flex-direction: column;
  gap: .5rem;
  transition: transform .18s ease, box-shadow .18s ease, border-color .18s ease;
}

.course-card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.course-pill {
  font-size: .75rem;
  padding: .15rem .6rem;
  border-radius: 999px;
  background: rgba(90,75,255,.08);
  color: var(--alnova-primary);
}

.course-card h3 {
  margin: .35rem 0;
  font-size: 1rem;
  color: var(--alnova-dark);
}

.course-card p {
  font-size: .86rem;
  color: #4b5563;
  line-height: 1.6;
}

.course-link {
  margin-top: .4rem;
  font-size: .85rem;
  font-weight: 600;
  color: var(--alnova-primary);
}

.course-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 18px 40px rgba(15,23,42,.12);
  border-color: rgba(90,75,255,.4);
  text-decoration: none;
}

/* Info section */
.info {
  padding: 1.5rem 0 3rem;
}

.info-inner {
  display: grid;
  grid-template-columns: minmax(0, 1.3fr) minmax(0, 1fr);
  gap: 2rem;
  align-items: stretch;
}

.info-list {
  margin: .75rem 0 0;
  padding-left: 1.2rem;
  color: #4b5563;
  font-size: .95rem;
  line-height: 1.7;
}

.info-box {
  background: linear-gradient(135deg, rgba(90,75,255,.08), rgba(37,196,255,.08));
  padding: 1.5rem;
  border-radius: 1.1rem;
  border: 1px solid rgba(90,75,255,.18);
  font-size: .92rem;
  color: #111827;
}

/* Course detail */
.course-hero {
  padding: 2.25rem 0 1.5rem;
}

.back-link {
  font-size: .9rem;
  color: #6b7280;
}

.back-link:hover {
  color: var(--alnova-primary);
}

.course-hero h1 {
  margin-top: .75rem;
  font-size: 1.8rem;
  color: var(--alnova-dark);
}

.course-description {
  margin-top: .75rem;
  max-width: 48rem;
  font-size: .98rem;
  line-height: 1.8;
  color: #4b5563;
}

.course-gallery,
.course-video {
  padding: 1.5rem 0;
}

.course-gallery h2,
.course-video h2 {
  font-size: 1.4rem;
  margin-bottom: .3rem;
}

.section-subtitle {
  margin-top: 0;
  margin-bottom: 1rem;
  font-size: .88rem;
  color: #6b7280;
}

.gallery-grid {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: .6rem;
}

.gallery-item {
  border-radius: .6rem;
  overflow: hidden;
  background: #e5e7eb;
  position: relative;
}

.gallery-item img {
  width: 100%;
  height: 120px;
  object-fit: cover;
}

.gallery-empty {
  padding: 1rem 1.1rem;
  border-radius: .8rem;
  border: 1px dashed var(--alnova-border);
  background: rgba(255,255,255,.7);
  font-size: .9rem;
  color: #6b7280;
}

.video-wrapper {
  max-width: 720px;
}

.responsive-iframe {
  position: relative;
  width: 100%;
  padding-bottom: 56.25%;
}

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

.video-element {
  width: 100%;
  border-radius: .8rem;
  box-shadow: 0 10px 24px rgba(15,23,42,.15);
}

.video-link {
  display: inline-flex;
  padding: .5rem 1rem;
  border-radius: 999px;
  border: 1px solid var(--alnova-primary);
  font-size: .9rem;
}

/* Footer */
.site-footer {
  border-top: 1px solid var(--alnova-border);
  background: #ffffff;
  padding: 1rem 0;
  margin-top: 1.5rem;
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: .75rem;
  font-size: .8rem;
  color: #6b7280;
}

.footer-note {
  font-style: italic;
}

/* Buttons & alerts */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: .45rem .9rem;
  border-radius: .7rem;
  border: 1px solid transparent;
  font-size: .86rem;
  font-weight: 500;
  cursor: pointer;
  background: #e5e7eb;
  color: #111827;
}

.primary-btn {
  background: linear-gradient(135deg, var(--alnova-primary), var(--alnova-secondary));
  color: white;
  border-color: transparent;
}

.primary-btn:hover {
  opacity: .92;
}

.ghost-btn {
  background: #ffffff;
  border-color: var(--alnova-border);
}

.danger-btn {
  background: #fee2e2;
  border-color: #fecaca;
  color: #b91c1c;
}

.alert {
  padding: .6rem .8rem;
  border-radius: .7rem;
  font-size: .86rem;
  margin-bottom: 1rem;
}

.alert-success {
  background: #ecfdf3;
  border: 1px solid #bbf7d0;
  color: #166534;
}

.alert-error {
  background: #fef2f2;
  border: 1px solid #fecaca;
  color: #b91c1c;
}

/* Admin layout */
.admin-body {
  background: radial-gradient(circle at top, rgba(90,75,255,.18), transparent 55%), #020617;
  color: #e5e7eb;
  min-height: 100vh;
}

.admin-header {
  border-bottom: 1px solid rgba(148,163,184,.35);
  backdrop-filter: blur(10px);
  background: linear-gradient(90deg, rgba(15,23,42,.92), rgba(15,23,42,.75));
}

.admin-header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: .75rem 0;
}

.admin-logo-main {
  font-weight: 700;
  letter-spacing: .1em;
  font-size: .9rem;
  text-transform: uppercase;
}

.admin-logo-sub {
  display: block;
  font-size: .75rem;
  color: #9ca3af;
}

.admin-nav a {
  margin-left: 1rem;
  font-size: .85rem;
  color: #cbd5f5;
}

.admin-nav a:hover {
  color: var(--alnova-accent);
}

.logout-link {
  color: #fecaca;
}

.admin-user {
  font-size: .8rem;
  color: #cbd5f5;
}

.admin-main {
  padding: 1.5rem 0 2.5rem;
  color: #e5e7eb;
}

.admin-main h1 {
  font-size: 1.4rem;
  margin-bottom: .5rem;
}

.admin-main p {
  font-size: .88rem;
  color: #cbd5f5;
}

.admin-stats {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin: 1.25rem 0 1.75rem;
}

.stat-card {
  background: linear-gradient(135deg, rgba(90,75,255,.25), rgba(37,196,255,.22));
  border-radius: .9rem;
  padding: .9rem 1rem;
  min-width: 150px;
}

.stat-label {
  font-size: .75rem;
  color: #e5e7eb;
}

.stat-value {
  display: block;
  margin-top: .35rem;
  font-size: 1.4rem;
  font-weight: 700;
}

.admin-section {
  background: rgba(15,23,42,.9);
  border-radius: 1rem;
  padding: 1rem 1.1rem 1.1rem;
  border: 1px solid rgba(148,163,184,.4);
  margin-bottom: 1.25rem;
}

.admin-section h2 {
  margin-top: 0;
  font-size: 1.1rem;
}

.admin-section p {
  color: #cbd5f5;
}

.admin-links {
  display: flex;
  flex-wrap: wrap;
  gap: .7rem;
}

/* Admin login */
.admin-login-wrapper {
  min-height: 100vh;
  display: grid;
  place-items: center;
  background: radial-gradient(circle at top, rgba(90,75,255,.18), transparent 55%), #020617;
}

.admin-login-box {
  background: rgba(15,23,42,.96);
  padding: 1.6rem 1.8rem;
  border-radius: 1.1rem;
  border: 1px solid rgba(148,163,184,.55);
  width: min(380px, 100% - 2rem);
}

.admin-login-box h1 {
  margin-top: 0;
  margin-bottom: 1rem;
  font-size: 1.3rem;
}

.admin-login-box label {
  display: block;
  font-size: .85rem;
  margin-bottom: .8rem;
}

.admin-login-box input {
  width: 100%;
  margin-top: .3rem;
  padding: .4rem .45rem;
  border-radius: .6rem;
  border: 1px solid #4b5563;
  background: #020617;
  color: #e5e7eb;
}

.admin-login-box input:focus {
  outline: none;
  border-color: var(--alnova-accent);
}

.admin-hint {
  margin-top: .75rem;
  font-size: .75rem;
  color: #9ca3af;
}

.back-to-site {
  font-size: .78rem;
  color: #9ca3af;
}

/* Forms & tables */
.admin-section label,
.admin-form label {
  display: block;
  font-size: .85rem;
  margin-bottom: .75rem;
}

.admin-section textarea,
.admin-section input[type="text"],
.admin-section select,
.admin-form input[type="password"] {
  width: 100%;
  margin-top: .3rem;
  padding: .45rem .5rem;
  border-radius: .7rem;
  border: 1px solid #4b5563;
  background: #020617;
  color: #e5e7eb;
  font-size: .85rem;
}

.admin-section textarea {
  min-height: 120px;
}

.form-inline {
  display: flex;
  flex-wrap: wrap;
  gap: .6rem;
  align-items: flex-end;
}

.form-inline label {
  flex: 1;
}

.form-help {
  font-size: .78rem;
  color: #9ca3af;
  margin-top: .4rem;
}

.admin-table {
  width: 100%;
  border-collapse: collapse;
  font-size: .8rem;
  margin-top: .75rem;
}

.admin-table th,
.admin-table td {
  border-bottom: 1px solid rgba(148,163,184,.3);
  padding: .35rem .4rem;
  text-align: left;
}

.admin-table th {
  font-weight: 600;
}

.thumb {
  width: 60px;
  height: 40px;
  object-fit: cover;
  border-radius: .35rem;
}

.badge {
  display: inline-flex;
  padding: .1rem .45rem;
  border-radius: 999px;
  border: 1px solid rgba(148,163,184,.7);
  font-size: .7rem;
}

.url-cell {
  max-width: 260px;
  word-break: break-all;
}

/* Responsive */
@media (max-width: 880px) {
  .hero-inner,
  .info-inner {
    grid-template-columns: minmax(0, 1fr);
  }

  .hero-slider {
    margin-top: 1rem;
  }

  .gallery-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (max-width: 640px) {
  .header-inner {
    flex-direction: column;
    align-items: flex-start;
  }

  .main-nav {
    width: 100%;
    display: flex;
    justify-content: flex-start;
    flex-wrap: wrap;
  }

  .main-nav a {
    margin-left: 0;
    margin-right: 1rem;
    margin-top: .3rem;
  }

  .gallery-item img {
    height: 100px;
  }

  .footer-inner {
    flex-direction: column;
    align-items: flex-start;
  }

  .admin-header-inner {
    flex-direction: column;
    align-items: flex-start;
    gap: .5rem;
  }

  .admin-nav a {
    margin-left: 0;
    margin-right: 1rem;
  }
}


/* Contact page */
.contact-hero {
  padding: 2.25rem 0 1.25rem;
}

.contact-hero h1 {
  font-size: 1.7rem;
  color: var(--alnova-dark);
}

.contact-intro {
  max-width: 38rem;
  font-size: .95rem;
  color: #4b5563;
  line-height: 1.7;
}

.contact-content {
  padding: 1.5rem 0 2.5rem;
}

.contact-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr);
  gap: 2rem;
}

.contact-card {
  background: #ffffff;
  border-radius: 1rem;
  border: 1px solid var(--alnova-border);
  padding: 1.1rem 1.2rem;
  box-shadow: 0 10px 24px rgba(15,23,42,.06);
  font-size: .9rem;
}

.contact-note {
  font-size: .86rem;
  color: #6b7280;
}

.social-list {
  list-style: none;
  padding: 0;
  margin: .75rem 0 0;
}

.social-list li {
  margin-bottom: .4rem;
}

.social-list a {
  font-size: .9rem;
  font-weight: 500;
}

/* Footer social */
.footer-social {
  display: flex;
  flex-wrap: wrap;
  gap: .5rem;
  font-size: .8rem;
}

.footer-social a {
  padding: .25rem .6rem;
  border-radius: 999px;
  border: 1px solid var(--alnova-border);
  background: #f9fafb;
}

@media (max-width: 880px) {
  .contact-grid {
    grid-template-columns: minmax(0, 1fr);
  }
}


.course-card-thumb {
  border-radius: .8rem;
  overflow: hidden;
  margin: -.3rem -.3rem .6rem;
  max-height: 130px;
}

.course-card-thumb img {
  width: 100%;
  height: 130px;
  object-fit: cover;
}