/* ═══════════════════════════════════════════════════════════════
   PROJECTS LIST PAGE — DARK THEME
   Matches the design system used in style.css
═══════════════════════════════════════════════════════════════ */
:root {
  --color-bg-0:          #060910;
  --color-bg-1:          #0d1117;
  --color-bg-2:          #161b22;
  --color-bg-3:          #1c2128;
  --color-bg-4:          #21262d;

  --color-accent:        #3b82f6;
  --color-accent-hover:  #60a5fa;
  --color-accent-dim:    rgba(59, 130, 246, 0.12);
  --color-accent-border: rgba(59, 130, 246, 0.35);

  --color-text-1:        #f0f6fc;
  --color-text-2:        #8b949e;
  --color-text-3:        #6e7681;

  --color-border:        #30363d;
  --color-border-hover:  #444c56;

  --badge-flagship-bg:     rgba(245, 158, 11, 0.12);
  --badge-flagship-text:   #f59e0b;
  --badge-flagship-border: rgba(245, 158, 11, 0.35);

  --badge-live-bg:         rgba(16, 185, 129, 0.12);
  --badge-live-text:       #10b981;
  --badge-live-border:     rgba(16, 185, 129, 0.35);

  --badge-repo-bg:         rgba(139, 148, 158, 0.1);
  --badge-repo-text:       #8b949e;
  --badge-repo-border:     rgba(139, 148, 158, 0.3);

  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;

  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;

  --transition-fast: 0.15s ease;
  --transition-base: 0.25s ease;
}

*,
*::before,
*::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-sans);
  background-color: var(--color-bg-1);
  color: var(--color-text-1);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  min-height: 100vh;
}

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

ul {
  list-style: none;
}

svg {
  flex-shrink: 0;
}

/* ── Back Navigation Link ── */
.back-link {
  position: fixed;
  top: 16px;
  left: 16px;
  z-index: 100;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--color-text-2);
  background: rgba(22, 27, 34, 0.9);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: 6px 12px;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  transition: all var(--transition-fast);
}

.back-link svg {
  width: 15px;
  height: 15px;
}

.back-link:hover {
  color: var(--color-text-1);
  border-color: var(--color-border-hover);
  background: var(--color-bg-3);
}

/* ── Page Header ── */
.page-header {
  padding: 7rem 1.5rem 2.5rem;
  background: linear-gradient(
    140deg,
    var(--color-bg-0) 0%,
    #0d1117 50%,
    #0f172a 100%
  );
  border-bottom: 1px solid var(--color-border);
}

.header-inner {
  max-width: 760px;
  margin: 0 auto;
}

.page-title {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 800;
  color: var(--color-text-1);
  letter-spacing: -0.03em;
  margin-bottom: 0.5rem;
}

.page-subtitle {
  font-size: 1rem;
  color: var(--color-text-2);
}

/* ── Main Content ── */
.list-main {
  padding: 3rem 1.5rem 5rem;
}

.list-container {
  max-width: 760px;
  margin: 0 auto;
}

/* ── Project List ── */
.project-list {
  display: flex;
  flex-direction: column;
  gap: 0;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

/* Individual project row */
.project-list-item {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 1.25rem 1.5rem;
  background: var(--color-bg-2);
  border-bottom: 1px solid var(--color-border);
  transition: background var(--transition-fast);
}

.project-list-item:last-child {
  border-bottom: none;
}

.project-list-item:hover {
  background: var(--color-bg-3);
}

/* Meta row (badges) */
.project-list-meta {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
}

/* Project name link */
.project-list-link {
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-text-1);
  transition: color var(--transition-fast);
}

.project-list-link:hover {
  color: var(--color-accent-hover);
}

/* Short description */
.project-list-caption {
  font-size: 0.875rem;
  color: var(--color-text-2);
  line-height: 1.5;
}

/* Sub-platform link (IBD) */
.project-sub-link {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  margin-top: 2px;
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--color-accent-hover);
  transition: color var(--transition-fast);
}

.project-sub-link svg {
  width: 12px;
  height: 12px;
  transition: transform var(--transition-fast);
}

.project-sub-link:hover {
  color: #ffffff;
}

.project-sub-link:hover svg {
  transform: translate(2px, -2px);
}

/* ── Badges ── */
.list-badge {
  display: inline-flex;
  align-items: center;
  font-size: 0.6875rem;
  font-weight: 700;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  padding: 2px 7px;
  border-radius: 4px;
  border: 1px solid transparent;
}

.list-badge-flagship {
  background: var(--badge-flagship-bg);
  color: var(--badge-flagship-text);
  border-color: var(--badge-flagship-border);
}

.list-badge-live {
  background: var(--badge-live-bg);
  color: var(--badge-live-text);
  border-color: var(--badge-live-border);
}

.list-badge-repo {
  background: var(--badge-repo-bg);
  color: var(--badge-repo-text);
  border-color: var(--badge-repo-border);
}

/* ── Bottom CTA ── */
.list-footer-cta {
  margin-top: 2rem;
  display: flex;
  justify-content: center;
}

.list-more-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 22px;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-text-2);
  background: var(--color-bg-3);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  transition: all var(--transition-base);
}

.list-more-link svg {
  width: 18px;
  height: 18px;
}

.list-more-link:hover {
  color: var(--color-text-1);
  background: var(--color-bg-4);
  border-color: var(--color-border-hover);
  transform: translateY(-2px);
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.4);
}

/* ── Responsive ── */
@media (max-width: 480px) {
  .page-header {
    padding: 6rem 1rem 2rem;
  }

  .list-main {
    padding: 2rem 1rem 4rem;
  }

  .project-list-item {
    padding: 1rem 1.125rem;
  }
}