/* Component Styles — dark scientific aesthetic */

@layer components {

  /* ===== Layout ===== */

  .container {
    width: 100%;
    max-width: var(--max-width);
    margin-inline: auto;
    padding-inline: var(--space-5);
  }

  .content {
    max-width: var(--content-width);
    margin-inline: auto;
  }

  /* ===== Grain Overlay ===== */

  .grain {
    position: fixed;
    inset: 0;
    z-index: 9999;
    pointer-events: none;
    opacity: 0.03;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  }

  /* ===== Navigation ===== */

  .site-header {
    position: sticky;
    top: 0;
    z-index: 50;
    background: rgba(10, 12, 16, 0.92);
    backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--color-border);
  }

  .nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 4rem;
  }

  .nav-logo {
    font-family: var(--font-heading);
    font-size: var(--text-xl);
    font-weight: 400;
    text-decoration: none;
    color: var(--color-foreground);
    letter-spacing: -0.02em;
    transition: color var(--transition-fast);
    display: flex;
    align-items: center;
    gap: var(--space-2);
  }

  .nav-logo-avatar {
    width: 1.75rem;
    height: 1.75rem;
    border-radius: 50%;
    object-fit: cover;
    object-position: center center;
    border: 1.5px solid var(--color-neutral-700);
    transition: border-color var(--transition-fast);
  }

  .nav-logo:hover {
    color: var(--color-primary-300);
  }

  .nav-logo:hover .nav-logo-avatar {
    border-color: var(--color-primary-500);
  }

  .nav-links {
    display: flex;
    gap: var(--space-5);
  }

  .nav-links a {
    font-family: var(--font-body);
    font-size: var(--text-sm);
    font-weight: 500;
    text-decoration: none;
    color: var(--color-muted-foreground);
    transition: color var(--transition-fast);
    position: relative;

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

    &:hover::after {
      content: '';
      position: absolute;
      bottom: -4px;
      left: 0;
      right: 0;
      height: 1px;
      background: var(--color-primary-300);
    }

    &[aria-current="page"] {
      color: var(--color-primary-300);
    }

    &[aria-current="page"]::after {
      content: '';
      position: absolute;
      bottom: -4px;
      left: 0;
      right: 0;
      height: 1px;
      background: var(--color-primary-300);
    }
  }

  /* ===== Hero ===== */

  .hero {
    padding-block: var(--space-8);
    text-align: center;
  }

  .hero-title {
    font-family: var(--font-heading);
    font-size: clamp(var(--text-4xl), 5vw, var(--text-7xl));
    font-weight: 400;
    line-height: var(--leading-tight);
    color: var(--color-foreground);
    letter-spacing: -1px;
    margin-bottom: var(--space-4);
  }

  .hero-subtitle {
    font-family: var(--font-mono);
    font-size: var(--text-sm);
    line-height: var(--leading-relaxed);
    color: var(--color-muted-foreground);
    letter-spacing: 1px;
    text-transform: uppercase;
    max-width: 50ch;
    margin-inline: auto;
  }

  /* ===== Button ===== */

  .btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    padding: var(--space-2) var(--space-4);
    font-family: var(--font-mono);
    font-size: var(--text-xs);
    font-weight: 400;
    line-height: 1;
    text-decoration: none;
    letter-spacing: 0.5px;
    border: 1px solid transparent;
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
    cursor: pointer;

    &:disabled {
      opacity: 0.5;
      pointer-events: none;
    }
  }

  .btn-primary {
    background: rgba(78, 205, 196, 0.12);
    color: var(--color-primary-300);
    border-color: var(--color-primary-300);

    &:hover {
      background: rgba(78, 205, 196, 0.2);
      box-shadow: var(--shadow-glow-teal);
    }
  }

  .btn-secondary {
    background: var(--color-muted);
    color: var(--color-foreground);
    border-color: var(--color-border);

    &:hover {
      background: var(--color-neutral-700);
      border-color: var(--color-neutral-500);
    }
  }

  .btn-accent {
    background: rgba(255, 107, 107, 0.12);
    color: var(--color-accent-300);
    border-color: var(--color-accent-300);

    &:hover {
      background: rgba(255, 107, 107, 0.2);
      box-shadow: var(--shadow-glow-coral);
    }
  }

  .btn-ghost {
    background: transparent;
    color: var(--color-muted-foreground);

    &:hover {
      background: var(--color-muted);
      color: var(--color-foreground);
    }
  }

  .btn-lg {
    padding: var(--space-3) var(--space-5);
    font-size: var(--text-sm);
  }

  .btn-sm {
    padding: var(--space-1) var(--space-3);
    font-size: 0.6875rem;
  }

  /* ===== Card ===== */

  .card {
    background: var(--color-card);
    color: var(--color-card-foreground);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: border-color var(--transition-normal), box-shadow var(--transition-normal);
  }

  .card:hover {
    border-color: var(--color-neutral-500);
    box-shadow: var(--shadow-lg);
  }

  .card-header {
    padding: var(--space-5);
    border-bottom: 1px solid var(--color-border);
  }

  .card-title {
    font-family: var(--font-heading);
    font-size: var(--text-xl);
    font-weight: 400;
    line-height: var(--leading-tight);
  }

  .card-description {
    font-size: var(--text-sm);
    color: var(--color-muted-foreground);
    margin-top: var(--space-1);
  }

  .card-content {
    padding: var(--space-5);
  }

  .card-footer {
    padding: var(--space-5);
    border-top: 1px solid var(--color-border);
    display: flex;
    align-items: center;
    gap: var(--space-3);
  }

  /* ===== Section ===== */

  .section {
    padding-block: var(--space-7);
  }

  .section-header {
    margin-bottom: var(--space-6);
  }

  .section-label {
    font-family: var(--font-mono);
    font-size: 0.6875rem;
    text-transform: uppercase;
    letter-spacing: 2px;
    color: var(--color-muted-foreground);
    margin-bottom: var(--space-3);
  }

  .section-title {
    font-family: var(--font-heading);
    font-size: clamp(var(--text-2xl), 3vw, var(--text-4xl));
    font-weight: 400;
    line-height: var(--leading-tight);
    color: var(--color-foreground);
    letter-spacing: -0.5px;
  }

  .section-description {
    font-size: var(--text-base);
    color: var(--color-muted-foreground);
    margin-top: var(--space-3);
    max-width: 60ch;
  }

  /* ===== Input ===== */

  .input {
    width: 100%;
    padding: var(--space-2) var(--space-3);
    font-family: var(--font-body);
    font-size: var(--text-sm);
    color: var(--color-foreground);
    background: var(--color-input);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);

    &:focus {
      outline: none;
      border-color: var(--color-ring);
      box-shadow: 0 0 0 3px rgba(78, 205, 196, 0.15);
    }

    &::placeholder {
      color: var(--color-muted-foreground);
    }
  }

  /* ===== Badge ===== */

  .badge {
    display: inline-flex;
    align-items: center;
    padding: var(--space-1) var(--space-2);
    font-family: var(--font-mono);
    font-size: 0.6875rem;
    font-weight: 400;
    letter-spacing: 0.5px;
    border-radius: var(--radius-sm);
    border: 1px solid var(--color-border);
    background: var(--color-muted);
    color: var(--color-muted-foreground);
  }

  .badge-primary {
    background: rgba(78, 205, 196, 0.1);
    color: var(--color-primary-300);
    border-color: rgba(78, 205, 196, 0.25);
  }

  .badge-accent {
    background: rgba(255, 107, 107, 0.1);
    color: var(--color-accent-300);
    border-color: rgba(255, 107, 107, 0.25);
  }

  .badge-secondary {
    background: rgba(108, 155, 255, 0.1);
    color: var(--color-secondary-300);
    border-color: rgba(108, 155, 255, 0.25);
  }

  .badge-gold {
    background: rgba(255, 209, 102, 0.1);
    color: var(--color-gold-300);
    border-color: rgba(255, 209, 102, 0.25);
  }

  .badge-purple {
    background: rgba(192, 132, 252, 0.1);
    color: var(--color-purple-300);
    border-color: rgba(192, 132, 252, 0.25);
  }

  /* ===== Separator ===== */

  .separator {
    height: 1px;
    background: var(--color-border);
    border: none;
    margin-block: var(--space-5);
  }

  /* ===== Page Hero with Background Image ===== */

  .page-hero {
    padding-block: var(--space-8) var(--space-7);
    text-align: center;
    position: relative;
  }

  .page-hero::after {
    content: '';
    display: block;
    width: 100%;
    height: 1px;
    background: linear-gradient(to right, transparent, var(--color-border), var(--color-border), var(--color-border), transparent);
    margin-top: var(--space-7);
  }

  .page-hero-eyebrow {
    font-family: var(--font-mono);
    font-size: var(--text-xs);
    font-weight: 500;
    letter-spacing: 0.16em;
    text-transform: uppercase;
    color: var(--color-secondary-300);
    margin-bottom: var(--space-4);
  }

  .page-hero-title {
    font-family: var(--font-heading);
    font-size: clamp(var(--text-4xl), 6vw, var(--text-7xl));
    font-weight: 400;
    line-height: var(--leading-tight);
    color: var(--color-foreground);
    letter-spacing: -0.01em;
    margin-bottom: var(--space-5);
  }

  .page-hero-subtitle {
    font-family: var(--font-body);
    font-size: var(--text-xl);
    font-weight: 300;
    line-height: var(--leading-relaxed);
    color: var(--color-muted-foreground);
    max-width: 52ch;
    margin-inline: auto;
  }

  .page-hero--has-bg {
    min-height: 60vh;
    display: flex;
    align-items: center;
    overflow: hidden;
  }

  .page-hero--has-bg::after { display: none; }

  .page-hero--tall { min-height: 80vh; }

  .page-hero-bg {
    position: absolute;
    inset: 0;
    z-index: 0;
  }

  .page-hero-bg-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center center;
  }

  .page-hero-overlay {
    position: absolute;
    inset: 0;
    z-index: 1;
    background: linear-gradient(
      to bottom,
      rgba(10, 12, 16, 0.6) 0%,
      rgba(10, 12, 16, 0.75) 50%,
      rgba(10, 12, 16, 0.92) 100%
    );
  }

  .page-hero-content {
    position: relative;
    z-index: 2;
  }

  /* ===== Page Loader Bar ===== */

  page-loader {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    pointer-events: none;
  }

  .page-loader-bar {
    height: 2px;
    background: linear-gradient(to right, var(--color-primary-300), var(--color-secondary-300));
    width: 0;
    display: none;
  }

  /* ===== Prose (shared) ===== */

  .prose {
    font-family: var(--font-body);
    font-size: var(--text-lg);
    line-height: var(--leading-relaxed);
    color: var(--color-neutral-100);
    max-width: 68ch;
  }

  .prose p + p { margin-top: var(--space-5); }

  /* ===== Mobile Navigation ===== */

  .nav-toggle {
    display: none;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    padding: var(--space-2);
    width: 2.5rem;
    height: 2.5rem;
    background: none;
    border: 1px solid transparent;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: background var(--transition-fast), border-color var(--transition-fast);
  }

  .nav-toggle:hover {
    background: var(--color-muted);
    border-color: var(--color-border);
  }

  .nav-toggle-bar {
    display: block;
    width: 18px;
    height: 2px;
    background: var(--color-foreground);
    border-radius: 1px;
    transition: transform var(--transition-normal), opacity var(--transition-normal);
    transform-origin: center;
  }

  /* Animate to X when open */
  .nav-toggle--active .nav-toggle-bar:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
  }

  .nav-toggle--active .nav-toggle-bar:nth-child(2) {
    opacity: 0;
    transform: scaleX(0);
  }

  .nav-toggle--active .nav-toggle-bar:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
  }

  @media (max-width: 768px) {
    .nav-toggle {
      display: flex;
    }

    .nav-links {
      display: none;
      position: absolute;
      top: 100%;
      left: 0;
      right: 0;
      flex-direction: column;
      background: rgba(10, 12, 16, 0.98);
      backdrop-filter: blur(20px);
      border-bottom: 1px solid var(--color-border);
      padding: var(--space-5);
      gap: var(--space-1);
    }

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

    .nav-links a {
      display: block;
      padding: var(--space-3) var(--space-3);
      border-radius: var(--radius-md);
      font-size: var(--text-base);
      transition: background var(--transition-fast), color var(--transition-fast);
    }

    .nav-links a:hover {
      background: var(--color-muted);
    }

    .nav-links a:hover::after {
      display: none;
    }

    .nav-links a[aria-current="page"] {
      background: rgba(78, 205, 196, 0.08);
    }

    .nav-links a[aria-current="page"]::after {
      display: none;
    }
  }

  /* ===== Footer ===== */

  .site-footer {
    border-top: 1px solid var(--color-border);
    padding-block: var(--space-5);
    margin-top: auto;
  }

  .footer-text {
    font-family: var(--font-mono);
    font-size: var(--text-xs);
    color: var(--color-muted-foreground);
    text-align: center;
    letter-spacing: 0.5px;
  }

  /* ===== Prose (for long-form content) ===== */

  .prose {
    max-width: var(--content-width);
    font-family: var(--font-body);
    font-size: var(--text-base);
    line-height: var(--leading-normal);
    color: var(--color-neutral-100);

    & h1, & h2, & h3, & h4 {
      font-family: var(--font-heading);
      color: var(--color-foreground);
      margin-top: var(--space-6);
      margin-bottom: var(--space-3);
      font-weight: 400;
    }

    & h1 { font-size: var(--text-4xl); line-height: var(--leading-tight); }
    & h2 { font-size: var(--text-3xl); line-height: var(--leading-tight); }
    & h3 { font-size: var(--text-2xl); line-height: var(--leading-snug); }
    & h4 { font-size: var(--text-xl); line-height: var(--leading-snug); }

    & p { margin-bottom: var(--space-4); }

    & a {
      color: var(--color-primary-300);
      text-decoration: underline;
      text-underline-offset: 0.15em;

      &:hover { color: var(--color-primary-200); }
    }

    & blockquote {
      border-left: 2px solid var(--color-primary-300);
      padding-left: var(--space-4);
      color: var(--color-muted-foreground);
      font-style: italic;
      margin-block: var(--space-4);
    }

    & code {
      font-family: var(--font-mono);
      font-size: 0.9em;
      background: var(--color-muted);
      padding: 0.15em 0.3em;
      border-radius: var(--radius-sm);
      color: var(--color-primary-200);
    }

    & pre {
      background: var(--color-neutral-900);
      color: var(--color-neutral-100);
      padding: var(--space-4);
      border-radius: var(--radius-lg);
      border: 1px solid var(--color-border);
      overflow-x: auto;
      margin-block: var(--space-4);

      & code {
        background: none;
        padding: 0;
        color: inherit;
      }
    }

    & ul, & ol {
      padding-left: var(--space-5);
      margin-bottom: var(--space-4);
    }

    & li { margin-bottom: var(--space-2); }

    & img {
      border-radius: var(--radius-lg);
      margin-block: var(--space-5);
    }

    & hr {
      height: 1px;
      background: var(--color-border);
      border: none;
      margin-block: var(--space-6);
    }
  }
}