/* File: assets/css/main.css */

/* ---------- Design tokens ---------- */
:root {
  color-scheme: dark;

  --color-bg: #0b1220;
  --color-surface: #111a2e;
  --color-surface-2: #16213a;
  --color-border: #24324f;
  --color-text: #e8edf7;
  --color-muted: #9fb0cc;
  --color-accent: #38bdf8;
  --color-accent-soft: #7dd3fc;
  --color-on-accent: #04111f;
  --color-danger-bg: #3b1219;
  --color-danger-border: #7f1d1d;
  --color-danger-text: #fecaca;

  --font-sans: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --radius: 14px;
  --radius-sm: 8px;
  --shadow: 0 10px 30px rgb(0 0 0 / 0.35);
  --container: 72rem;
  --header-h: 4.5rem;
  --gap: clamp(1rem, 2vw, 1.5rem);
}

/* ---------- Reset & base ---------- */
*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-h) + 1rem);
}

body {
  margin: 0;
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.6;
  color: var(--color-text);
  background: var(--color-bg);
}

main {
  flex: 1;
}

img,
svg {
  display: block;
  max-width: 100%;
  height: auto;
}

h1, h2, h3, p, dl, dd, ul {
  margin-block: 0;
}

h1, h2, h3 {
  line-height: 1.15;
  letter-spacing: -0.01em;
}

a {
  color: var(--color-accent);
  text-underline-offset: 0.2em;

  &:hover {
    color: var(--color-accent-soft);
  }
}

:focus-visible {
  outline: 3px solid var(--color-accent);
  outline-offset: 3px;
  border-radius: 4px;
}

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

.narrow {
  max-width: 40rem;
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  overflow: hidden;
  clip-path: inset(50%);
  white-space: nowrap;
  border: 0;
}

.skip-link {
  position: absolute;
  inset-block-start: 0.5rem;
  inset-inline-start: 0.5rem;
  z-index: 100;
  padding: 0.6rem 1rem;
  border-radius: var(--radius-sm);
  background: var(--color-accent);
  color: var(--color-on-accent);
  font-weight: 600;
  text-decoration: none;
  transform: translateY(-200%);

  &:focus {
    transform: translateY(0);
  }
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  min-height: 2.75rem;
  padding: 0.6rem 1.25rem;
  border: 1px solid transparent;
  border-radius: 999px;
  font: inherit;
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
  transition: background-color 0.15s ease, border-color 0.15s ease, color 0.15s ease;

  &.btn-primary {
    background: var(--color-accent);
    color: var(--color-on-accent);

    &:hover {
      background: var(--color-accent-soft);
      color: var(--color-on-accent);
    }
  }

  &.btn-ghost {
    background: transparent;
    color: var(--color-text);
    border-color: var(--color-border);

    &:hover {
      background: var(--color-surface-2);
      color: var(--color-text);
    }
  }
}

/* ---------- Header ---------- */
.site-header {
  position: sticky;
  inset-block-start: 0;
  z-index: 50;
  background: rgb(11 18 32 / 0.85);
  backdrop-filter: blur(12px);
  border-block-end: 1px solid var(--color-border);

  .header-bar {
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    align-items: center;
    gap: 1rem;
    min-height: var(--header-h);
  }

  .brand {
    display: inline-flex;
    align-items: center;
    gap: 0.75rem;
    justify-self: start;
    color: var(--color-text);
    text-decoration: none;
  }

  .brand-text {
    display: flex;
    flex-direction: column;
    line-height: 1.1;
  }

  .brand-name {
    font-size: 1.25rem;
    font-weight: 800;
    letter-spacing: 0.04em;
  }

  .brand-tag {
    font-size: 0.75rem;
    color: var(--color-muted);
    text-transform: uppercase;
    letter-spacing: 0.12em;
  }

  /* On desktop the wrapper disappears so nav and actions become grid items. */
  .site-nav {
    display: contents;
  }

  .nav-list {
    display: flex;
    gap: 0.25rem;
    padding: 0;
    list-style: none;

    a {
      display: block;
      padding: 0.5rem 1rem;
      border-radius: 999px;
      color: var(--color-muted);
      font-weight: 500;
      text-decoration: none;

      &:hover {
        color: var(--color-text);
        background: var(--color-surface-2);
      }

      &[aria-current="page"] {
        color: var(--color-on-accent);
        background: var(--color-accent);
      }
    }
  }

  .header-actions {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    justify-self: end;

    form {
      margin: 0;
    }
  }
}

.nav-toggle {
  display: none;
  align-items: center;
  justify-content: center;
  width: 2.75rem;
  height: 2.75rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--color-surface);
  color: var(--color-text);
  cursor: pointer;

  .nav-toggle-bars {
    position: relative;
    display: block;
    width: 1.25rem;
    height: 2px;
    background: currentColor;
    border-radius: 2px;

    &::before,
    &::after {
      content: "";
      position: absolute;
      inset-inline-start: 0;
      width: 100%;
      height: 2px;
      background: currentColor;
      border-radius: 2px;
    }

    &::before {
      inset-block-start: -6px;
    }

    &::after {
      inset-block-start: 6px;
    }
  }
}

@media (max-width: 54rem) {
  .site-header .header-bar {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    padding-block: 0.75rem;
  }

  .site-header .site-nav {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    width: 100%;
    padding-block: 1rem 0.5rem;
  }

  .site-header .nav-list {
    flex-direction: column;
  }

  .site-header .header-actions {
    flex-wrap: wrap;
    justify-self: stretch;
  }

  /* Collapse the menu only when JavaScript is available (progressive enhancement). */
  .js-ready .nav-toggle {
    display: inline-flex;
  }

  .js-ready .site-nav:not([data-open="true"]) {
    display: none;
  }
}

/* ---------- Alerts ---------- */
.alert {
  margin-block: 1rem 0;
  padding: 0.9rem 1.1rem;
  border: 1px solid var(--color-danger-border);
  border-radius: var(--radius-sm);
  background: var(--color-danger-bg);
  color: var(--color-danger-text);
}

/* ---------- Hero ---------- */
.hero {
  padding-block: clamp(4rem, 12vw, 9rem);
  text-align: center;
  background:
    radial-gradient(60rem 30rem at 80% -10%, rgb(56 189 248 / 0.18), transparent 60%),
    radial-gradient(40rem 25rem at 0% 100%, rgb(14 165 233 / 0.12), transparent 60%);

  .eyebrow {
    display: inline-block;
    padding: 0.3rem 0.9rem;
    border: 1px solid var(--color-border);
    border-radius: 999px;
    color: var(--color-accent);
    font-size: 0.85rem;
    font-weight: 600;
    letter-spacing: 0.12em;
    text-transform: uppercase;
  }

  h1 {
    margin-block: 1.25rem;
    font-size: clamp(2.25rem, 6vw, 4.5rem);
    letter-spacing: -0.02em;
  }

  .lead {
    max-width: 42rem;
    margin-inline: auto;
  }

  .hero-actions {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 0.75rem;
    margin-block-start: 2rem;
  }
}

.lead {
  color: var(--color-muted);
  font-size: clamp(1.05rem, 2vw, 1.25rem);
}

/* ---------- Sections ---------- */
.section {
  padding-block: clamp(3rem, 7vw, 5rem);
}

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

.section-head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 0.5rem 1rem;
  margin-block-end: 1.5rem;

  .section-title {
    margin-block-end: 0;
  }
}

.section-title {
  margin-block-end: 1.5rem;
  font-size: clamp(1.5rem, 3vw, 2.1rem);
}

.page-head {
  margin-block-end: 2.5rem;

  h1 {
    margin-block-end: 0.5rem;
    font-size: clamp(2rem, 5vw, 3rem);
  }
}

.empty {
  padding: 2rem;
  border: 1px dashed var(--color-border);
  border-radius: var(--radius);
  color: var(--color-muted);
  text-align: center;
}

.meta {
  color: var(--color-muted);
  font-size: 0.875rem;
}

.link-more {
  font-weight: 600;
  text-decoration: none;

  &:hover {
    text-decoration: underline;
  }
}

/* ---------- Cards ---------- */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 17rem), 1fr));
  gap: var(--gap);
}

.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: border-color 0.15s ease, transform 0.15s ease;

  &:hover {
    border-color: var(--color-accent);
  }
}

.section-alt .card {
  background: var(--color-bg);
}

.feature-card {
  padding: 1.75rem;

  .card-index {
    margin-block-end: 1rem;
    color: var(--color-accent);
    font-size: 0.9rem;
    font-weight: 800;
    letter-spacing: 0.15em;
  }

  h3 {
    margin-block-end: 0.6rem;
    font-size: 1.25rem;
  }

  p:last-child {
    color: var(--color-muted);
  }
}

/* ---------- News ---------- */
.news-card {
  display: flex;
  flex-direction: column;

  .news-card-image {
    width: 100%;
    aspect-ratio: 16 / 9;
    object-fit: cover;
  }

  .news-card-body {
    display: flex;
    flex: 1;
    flex-direction: column;
    gap: 0.6rem;
    padding: 1.25rem 1.5rem 1.5rem;
  }

  .news-card-title {
    font-size: 1.2rem;

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

      &:hover {
        color: var(--color-accent);
      }
    }
  }

  .news-card-excerpt {
    flex: 1;
    color: var(--color-muted);
  }
}

.article {
  max-width: 46rem;

  h1 {
    margin-block: 1rem 0.5rem;
    font-size: clamp(2rem, 5vw, 3rem);
  }

  .article-image {
    width: 100%;
    margin-block: 1.5rem;
    border-radius: var(--radius);
  }

  .article-body {
    margin-block-start: 1.5rem;
    font-size: 1.1rem;

    p + p {
      margin-block-start: 1.1em;
    }
  }
}

.pagination {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  margin-block-start: 2.5rem;

  .pagination-info {
    color: var(--color-muted);
  }
}

/* ---------- Contacts ---------- */
.contact-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 2rem 1.5rem;
  text-align: center;

  .avatar {
    width: 6rem;
    height: 6rem;
    margin-block-end: 1rem;
    border: 2px solid var(--color-border);
    border-radius: 50%;
    object-fit: cover;
  }

  .avatar-fallback {
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-surface-2);
    color: var(--color-accent);
    font-size: 2.25rem;
    font-weight: 800;
  }

  .contact-position {
    color: var(--color-accent);
    font-size: 0.85rem;
    font-weight: 600;
    letter-spacing: 0.08em;
    text-transform: uppercase;
  }

  .contact-name {
    margin-block: 0.25rem 1rem;
    font-size: 1.35rem;
  }

  .contact-details {
    display: grid;
    gap: 0.5rem;
    width: 100%;

    dt {
      color: var(--color-muted);
      font-size: 0.8rem;
      text-transform: uppercase;
      letter-spacing: 0.08em;
    }

    dd {
      overflow-wrap: anywhere;
    }
  }
}

/* ---------- Call-to-action band ---------- */
.band {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  padding: clamp(1.5rem, 4vw, 2.5rem);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  background: linear-gradient(135deg, var(--color-surface-2), var(--color-surface));

  h2 {
    margin-block-end: 0.25rem;
    font-size: 1.6rem;
  }

  p {
    color: var(--color-muted);
  }
}

/* ---------- Footer (always at the bottom, content centered) ---------- */
.main-footer {
  align-self: stretch;
  margin-block-start: auto;
  padding: 2rem 1rem;
  border-block-start: 1px solid var(--color-border);
  background: var(--color-surface);
  color: var(--color-muted);
  font-size: 0.9rem;
  text-align: center;

  .footer-info {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.35rem;
    max-width: var(--container);
    margin-inline: auto;
  }

  strong {
    color: var(--color-text);
    font-weight: 700;
  }

  a {
    color: var(--color-accent);
    text-decoration: none;

    &:hover {
      color: var(--color-accent-soft);
      text-decoration: underline;
    }
  }
}

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

  *,
  *::before,
  *::after {
    transition: none !important;
    animation: none !important;
  }
}