:root {
  --bg: #071019;
  --bg-soft: #0d1723;
  --surface: rgba(11, 19, 31, 0.9);
  --surface-strong: rgba(15, 23, 36, 0.98);
  --surface-soft: rgba(148, 163, 184, 0.08);
  --border: rgba(148, 163, 184, 0.14);
  --border-strong: rgba(148, 163, 184, 0.2);
  --text: #e8edf4;
  --text-soft: #b7c4d4;
  --muted: #8ca0b8;
  --accent: #7dd3fc;
  --accent-soft: rgba(125, 211, 252, 0.12);
  --accent-strong: #d6f4ff;
  --success: #99f6e4;
  --success-soft: rgba(16, 185, 129, 0.14);
  --shadow-lg: 0 28px 70px rgba(2, 6, 23, 0.32);
  --shadow-md: 0 18px 38px rgba(2, 6, 23, 0.24);
  --title-font: "Space Grotesk", sans-serif;
  --body-font: "Manrope", sans-serif;
  --arabic-font: "IBM Plex Sans Arabic", sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  background:
    radial-gradient(circle at top left, rgba(125, 211, 252, 0.1), transparent 24%),
    radial-gradient(circle at top right, rgba(59, 130, 246, 0.08), transparent 22%),
    linear-gradient(180deg, #071019 0%, #0b1220 100%);
  color: var(--text);
  font-family: var(--body-font);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

a {
  color: inherit;
}

.shell {
  width: min(1080px, calc(100% - 1.5rem));
  margin: 0 auto;
  padding: 1.25rem 0 4rem;
}

.hero {
  position: relative;
  overflow: hidden;
  padding: clamp(1.5rem, 4vw, 2.75rem);
  border-radius: 30px;
  border: 1px solid var(--border);
  background:
    radial-gradient(circle at top left, rgba(125, 211, 252, 0.14), transparent 28%),
    linear-gradient(140deg, rgba(255, 255, 255, 0.04), rgba(255, 255, 255, 0.015)),
    var(--surface);
  box-shadow: var(--shadow-lg);
}

.hero__media {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(180deg, rgba(7, 16, 25, 0.14), rgba(7, 16, 25, 0.78)),
    linear-gradient(135deg, rgba(96, 165, 250, 0.16), rgba(15, 23, 36, 0.28)),
    var(--hero-image);
  background-size: cover;
  background-position: center;
}

.hero__top {
  position: relative;
  z-index: 1;
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  align-items: flex-start;
}

.hero__footer {
  position: relative;
  z-index: 1;
  margin-top: 1.25rem;
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.hero__intro {
  min-width: 0;
}

.hero__side-note {
  margin: 0;
  align-self: flex-start;
  padding: 0.7rem 1rem;
  border-radius: 18px;
  background: rgba(7, 16, 25, 0.58);
  border: 1px solid rgba(255, 255, 255, 0.14);
  color: var(--accent-strong);
  font-family: var(--arabic-font);
  font-size: 1rem;
  font-weight: 600;
  direction: rtl;
  text-align: right;
  white-space: nowrap;
}

.hero__eyebrow {
  display: inline-flex;
  align-items: center;
  padding: 0.4rem 0.75rem;
  border-radius: 999px;
  background: rgba(148, 163, 184, 0.08);
  color: var(--accent);
  font-family: var(--title-font);
  font-size: 0.82rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.hero h1 {
  margin: 0.9rem 0 0;
  font-family: var(--title-font);
  font-size: clamp(2rem, 5vw, 3.2rem);
  line-height: 1;
  letter-spacing: -0.04em;
  color: #f8fafc;
}

.hero__subtitle {
  max-width: 28ch;
  margin: 0.7rem 0 0;
  color: #f8fafc;
  font-family: var(--title-font);
  font-size: clamp(1.15rem, 2.5vw, 1.6rem);
  line-height: 1.1;
  letter-spacing: -0.03em;
  text-wrap: balance;
}

.hero__description {
  max-width: 64ch;
  margin: 1rem 0 0;
  color: var(--text-soft);
  font-size: 1rem;
}

.hero--with-image .hero__eyebrow,
.hero--with-image .hero__side-note,
.hero--with-image .back-link,
.hero--with-image .badge {
  background: rgba(7, 16, 25, 0.58);
  border-color: rgba(255, 255, 255, 0.14);
}

.hero--with-image .hero__eyebrow {
  font-size: 0.92rem;
}

.hero--with-image h1 {
  font-size: clamp(2.5rem, 6vw, 4rem);
}

.hero--with-image .hero__subtitle {
  font-size: clamp(1.45rem, 3vw, 2rem);
}

.hero--with-image .hero__description {
  font-size: 1.08rem;
}

.hero--with-image h1,
.hero--with-image .hero__subtitle,
.hero--with-image .hero__description {
  text-shadow: 0 10px 24px rgba(2, 6, 23, 0.34);
}

.back-link,
.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  padding: 0.7rem 0.95rem;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: rgba(10, 15, 22, 0.72);
  text-decoration: none;
  color: var(--text-soft);
  white-space: nowrap;
}

.back-link:hover {
  border-color: rgba(125, 211, 252, 0.28);
  color: var(--text);
}

.back-link svg,
.badge svg {
  width: 1rem;
  height: 1rem;
  flex-shrink: 0;
}

.home-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
  margin-top: 1.5rem;
}

.course-card {
  position: relative;
  display: block;
  min-height: 260px;
  border-radius: 26px;
  border: 1px solid var(--border);
  overflow: hidden;
  text-decoration: none;
  box-shadow: var(--shadow-md);
  transition: transform 160ms ease, border-color 160ms ease;
}

.course-card:hover,
.course-card:focus-visible {
  transform: translateY(-2px);
  border-color: rgba(125, 211, 252, 0.26);
  outline: none;
}

.panel__icon,
.resource-link__icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--accent);
  background: linear-gradient(180deg, #223147, #162131);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.03);
  flex-shrink: 0;
}

.panel__icon svg,
.resource-link__icon svg,
.course-card__arrow svg,
.resource-link__arrow svg {
  width: 1.2rem;
  height: 1.2rem;
}

.course-card__media {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(180deg, rgba(7, 16, 25, 0.08), rgba(7, 16, 25, 0.84)),
    linear-gradient(135deg, rgba(96, 165, 250, 0.18), rgba(15, 23, 36, 0.32)),
    var(--card-image);
  background-size: cover;
  background-position: center;
  transform: scale(1.01);
  transition: transform 220ms ease;
}

.course-card:hover .course-card__media,
.course-card:focus-visible .course-card__media {
  transform: scale(1.04);
}

.course-card__content {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  gap: 0.75rem;
  padding: 1.5rem;
  z-index: 1;
}

.course-card__code {
  align-self: flex-start;
  display: inline-flex;
  align-items: center;
  padding: 0.45rem 0.75rem;
  border-radius: 999px;
  background: rgba(7, 16, 25, 0.62);
  border: 1px solid rgba(255, 255, 255, 0.14);
  color: var(--accent-strong);
  font-family: var(--title-font);
  font-size: 0.9rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.course-card__title {
  margin: 0;
  font-family: var(--title-font);
  font-size: clamp(2rem, 5vw, 3rem);
  line-height: 0.98;
  letter-spacing: -0.03em;
  color: #f8fafc;
  max-width: 18ch;
  text-wrap: balance;
  text-shadow: 0 10px 24px rgba(2, 6, 23, 0.42);
}

.course-card__arrow {
  position: absolute;
  right: 1.35rem;
  bottom: 1.35rem;
  z-index: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 3rem;
  height: 3rem;
  border-radius: 999px;
  background: rgba(7, 16, 25, 0.62);
  border: 1px solid rgba(255, 255, 255, 0.14);
  color: #f8fafc;
  transition: transform 160ms ease, color 160ms ease;
}

.course-card:hover .course-card__arrow,
.course-card:focus-visible .course-card__arrow {
  transform: translateX(4px);
  color: var(--accent);
}

.panel {
  margin-top: 1.5rem;
  border-radius: 28px;
  border: 1px solid var(--border);
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.025), rgba(255, 255, 255, 0.01)),
    var(--surface-strong);
  box-shadow: var(--shadow-lg);
  overflow: hidden;
}

.resource-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.resource-list > li + li {
  border-top: 1px solid rgba(148, 163, 184, 0.08);
}

.group-item {
  padding: 1rem 1.25rem 0.8rem;
  background: linear-gradient(180deg, rgba(148, 163, 184, 0.08), rgba(148, 163, 184, 0.03));
}

.group-label > span:first-child {
  display: block;
  font-size: 0.84rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
}

.group-label > span:last-child {
  display: block;
  margin-top: 0.18rem;
  color: var(--text-soft);
  font-family: var(--arabic-font);
  font-size: 1.04rem;
  font-weight: 500;
  direction: rtl;
  text-align: right;
}

.resource-link {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  gap: 0.9rem;
  align-items: center;
  padding: 1rem 1.25rem;
  text-decoration: none;
  transition: background 160ms ease;
}

.resource-link:hover,
.resource-link:focus-visible {
  background: var(--accent-soft);
  outline: none;
}

.resource-link[data-variant="study"] {
  background: linear-gradient(90deg, var(--success-soft), rgba(16, 185, 129, 0.05));
}

.resource-link[data-variant="study"]:hover,
.resource-link[data-variant="study"]:focus-visible {
  background: linear-gradient(90deg, rgba(16, 185, 129, 0.2), rgba(16, 185, 129, 0.08));
}

.resource-link[data-variant="past-exam"] {
  background: linear-gradient(90deg, rgba(245, 158, 11, 0.2), rgba(120, 53, 15, 0.08));
}

.resource-link[data-variant="past-exam"]:hover,
.resource-link[data-variant="past-exam"]:focus-visible {
  background: linear-gradient(90deg, rgba(245, 158, 11, 0.28), rgba(120, 53, 15, 0.12));
}

.resource-link__icon {
  width: 2.65rem;
  height: 2.65rem;
  border-radius: 14px;
}

.resource-link[data-variant="study"] .resource-link__icon {
  background: linear-gradient(180deg, #134e4a, #0f2f33);
  color: var(--success);
}

.resource-link[data-variant="past-exam"] .resource-link__icon {
  background: linear-gradient(180deg, #78350f, #451a03);
  color: #fbbf24;
}

.resource-link__body {
  min-width: 0;
}

.resource-link__body strong {
  display: block;
  color: var(--text);
  font-size: 1.12rem;
}

.resource-link__body small {
  display: block;
  margin-top: 0.18rem;
  color: var(--accent);
  font-family: var(--arabic-font);
  font-size: 0.98rem;
  font-weight: 500;
  direction: rtl;
  text-align: left;
}

.resource-link[data-variant="study"] .resource-link__body small {
  color: var(--success);
}

.resource-link[data-variant="past-exam"] .resource-link__body small {
  color: #fbbf24;
}

.resource-link__arrow {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.15rem;
  height: 2.15rem;
  border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, 0.08);
  background: rgba(7, 16, 25, 0.32);
  color: rgba(248, 250, 252, 0.68);
  opacity: 0.82;
  flex-shrink: 0;
  transition: transform 160ms ease, color 160ms ease, background 160ms ease, border-color 160ms ease, opacity 160ms ease;
}

.resource-link:hover .resource-link__arrow,
.resource-link:focus-visible .resource-link__arrow {
  transform: translateX(4px);
  color: var(--accent);
  background: rgba(125, 211, 252, 0.08);
  border-color: rgba(125, 211, 252, 0.18);
  opacity: 1;
}

.empty-state {
  padding: 1.4rem 1.25rem;
  color: var(--muted);
}

@media (max-width: 760px) {
  .shell {
    width: min(100%, calc(100% - 1rem));
    padding-top: 1rem;
  }

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

@media (max-width: 560px) {
  .hero h1 {
    font-size: clamp(1.7rem, 7.5vw, 2.7rem);
  }

  .hero__subtitle {
    font-size: clamp(1rem, 4.5vw, 1.35rem);
  }

  .hero__description {
    font-size: 0.95rem;
  }

  .hero--with-image h1 {
    font-size: clamp(1.9rem, 7.5vw, 3rem);
  }

  .hero--with-image .hero__subtitle {
    font-size: clamp(1.2rem, 5vw, 1.65rem);
  }

  .hero--with-image .hero__description {
    font-size: 1rem;
  }

  .hero__eyebrow,
  .hero--with-image .hero__eyebrow {
    font-size: 0.78rem;
  }

  .hero__side-note {
    font-size: 0.9rem;
  }

  .course-card {
    min-height: 220px;
  }

  .course-card__code {
    font-size: 0.76rem;
  }

  .course-card__title {
    font-size: clamp(1.6rem, 7vw, 2.45rem);
  }

  .resource-link {
    grid-template-columns: auto 1fr auto;
  }

  .group-label > span:first-child {
    font-size: 0.78rem;
  }

  .group-label > span:last-child {
    font-size: 0.94rem;
  }

  .resource-link__body strong {
    font-size: 1rem;
  }

  .resource-link__body small {
    font-size: 0.9rem;
  }

  .badge,
  .back-link {
    font-size: 0.9rem;
  }

  .resource-link__body small {
    text-align: right;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  * {
    transition: none !important;
  }
}