/*
 * Changelog Timeline — Stylesheet
 * Created by: lautandigital.id
 * Website: https://lautandigital.id
 */

/* ─── Reset & Base ─────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --clr-bg:           #0d0f14;
  --clr-surface:      #13161e;
  --clr-surface-2:    #1a1e2a;
  --clr-border:       #252a38;
  --clr-border-hover: #3a4260;
  --clr-line:         #1e2330;

  --clr-text:         #e2e6f0;
  --clr-text-muted:   #6b738e;
  --clr-text-dim:     #9299b0;

  --clr-accent:       #6c63ff;
  --clr-accent-glow:  rgba(108, 99, 255, 0.18);
  --clr-accent-alt:   #4e97ff;

  --clr-feature:      #6c63ff;
  --clr-feature-bg:   rgba(108, 99, 255, 0.12);
  --clr-improve:      #22d3a8;
  --clr-improve-bg:   rgba(34, 211, 168, 0.10);
  --clr-fix:          #f59e42;
  --clr-fix-bg:       rgba(245, 158, 66, 0.12);
  --clr-breaking:     #f05263;
  --clr-breaking-bg:  rgba(240, 82, 99, 0.12);
  --clr-major:        #f7c948;
  --clr-major-bg:     rgba(247, 201, 72, 0.10);

  --radius-sm:   6px;
  --radius-md:   12px;
  --radius-lg:   18px;

  --shadow-card: 0 4px 24px rgba(0,0,0,0.35);
  --shadow-glow: 0 0 20px var(--clr-accent-glow);

  --font-sans: 'Inter', 'Segoe UI', system-ui, -apple-system, sans-serif;
  --font-mono: 'Fira Code', 'Cascadia Code', 'Consolas', monospace;

  --timeline-left: 200px;
  --dot-size: 14px;
}

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-sans);
  background-color: var(--clr-bg);
  color: var(--clr-text);
  line-height: 1.7;
  min-height: 100vh;
}

a { color: var(--clr-accent); text-decoration: none; }
a:hover { text-decoration: underline; }

kbd {
  font-family: var(--font-mono);
  font-size: 0.75em;
  background: var(--clr-surface-2);
  border: 1px solid var(--clr-border);
  border-radius: 4px;
  padding: 1px 5px;
  color: var(--clr-text-dim);
}

code {
  font-family: var(--font-mono);
  font-size: 0.85em;
  background: var(--clr-surface-2);
  border: 1px solid var(--clr-border);
  border-radius: 4px;
  padding: 1px 6px;
  color: var(--clr-accent-alt);
}

/* ─── Header ───────────────────────────────────────────────────────── */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(13, 15, 20, 0.85);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--clr-border);
}

.header-inner {
  max-width: 1080px;
  margin: 0 auto;
  padding: 0 2rem;
  height: 60px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.header-logo {
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 700;
  font-size: 1rem;
  letter-spacing: -0.01em;
}

.logo-icon {
  color: var(--clr-accent);
  font-size: 0.75rem;
}

.header-nav {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  font-size: 0.875rem;
}

.header-nav a { color: var(--clr-text-dim); }
.header-nav a:hover { color: var(--clr-text); text-decoration: none; }

.btn-cta {
  background: var(--clr-accent);
  color: #fff !important;
  padding: 6px 16px;
  border-radius: var(--radius-sm);
  font-weight: 600;
  transition: opacity 0.15s;
}
.btn-cta:hover { opacity: 0.88; text-decoration: none !important; }

/* ─── Page Layout ──────────────────────────────────────────────────── */
.changelog-page {
  max-width: 1080px;
  margin: 0 auto;
  padding: 0 2rem 6rem;
}

/* ─── Hero ─────────────────────────────────────────────────────────── */
.changelog-hero {
  text-align: center;
  padding: 5rem 1rem 3.5rem;
}

.hero-label {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--clr-accent);
  background: var(--clr-accent-glow);
  border: 1px solid rgba(108, 99, 255, 0.3);
  border-radius: 100px;
  padding: 3px 14px;
  margin-bottom: 1.25rem;
}

.hero-title {
  font-size: clamp(2.2rem, 5vw, 3.5rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.1;
  background: linear-gradient(135deg, #e2e6f0 30%, var(--clr-accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 1rem;
}

.hero-subtitle {
  color: var(--clr-text-muted);
  font-size: 1.05rem;
  max-width: 480px;
  margin: 0 auto 2.25rem;
}

.hero-search {
  position: relative;
  max-width: 440px;
  margin: 0 auto 1.5rem;
}

.hero-search input {
  width: 100%;
  padding: 12px 44px 12px 18px;
  background: var(--clr-surface);
  border: 1px solid var(--clr-border);
  border-radius: 100px;
  color: var(--clr-text);
  font-size: 0.9rem;
  font-family: var(--font-sans);
  outline: none;
  transition: border-color 0.2s, box-shadow 0.2s;
}

.hero-search input::placeholder { color: var(--clr-text-muted); }
.hero-search input:focus {
  border-color: var(--clr-accent);
  box-shadow: 0 0 0 3px var(--clr-accent-glow);
}

.search-icon {
  position: absolute;
  right: 16px;
  top: 50%;
  transform: translateY(-50%);
  pointer-events: none;
  font-size: 1rem;
  color: var(--clr-text-muted);
}

/* ─── Filter Bar ───────────────────────────────────────────────────── */
.filter-bar {
  display: flex;
  justify-content: center;
  gap: 8px;
  flex-wrap: wrap;
}

.filter-btn {
  background: var(--clr-surface);
  border: 1px solid var(--clr-border);
  color: var(--clr-text-dim);
  padding: 6px 16px;
  border-radius: 100px;
  font-size: 0.82rem;
  font-family: var(--font-sans);
  font-weight: 500;
  cursor: pointer;
  transition: all 0.18s;
}

.filter-btn:hover {
  border-color: var(--clr-border-hover);
  color: var(--clr-text);
}

.filter-btn.active {
  background: var(--clr-accent);
  border-color: var(--clr-accent);
  color: #fff;
  box-shadow: 0 2px 12px var(--clr-accent-glow);
}

/* ─── Timeline Layout ──────────────────────────────────────────────── */
.timeline-section {
  position: relative;
  padding-top: 1rem;
}

.timeline-line {
  position: absolute;
  left: calc(var(--timeline-left) + 30px);
  top: 1rem;
  bottom: 0;
  width: 2px;
  background: linear-gradient(to bottom, var(--clr-accent) 0%, var(--clr-line) 12%, var(--clr-line) 88%, transparent 100%);
  border-radius: 2px;
}

.timeline { display: flex; flex-direction: column; gap: 3rem; }

/* ─── Timeline Entry ───────────────────────────────────────────────── */
.timeline-entry {
  display: grid;
  grid-template-columns: var(--timeline-left) var(--dot-size) 1fr;
  column-gap: 28px;
  align-items: start;
  opacity: 0;
  transform: translateY(22px);
  transition: opacity 0.45s ease, transform 0.45s ease;
}

.timeline-entry.visible {
  opacity: 1;
  transform: translateY(0);
}

.entry-date-col {
  text-align: right;
  padding-top: 18px;
}

.entry-date {
  font-size: 0.82rem;
  color: var(--clr-text-muted);
  font-weight: 500;
  letter-spacing: 0.02em;
  white-space: nowrap;
}

.entry-dot {
  width: var(--dot-size);
  height: var(--dot-size);
  border-radius: 50%;
  background: var(--clr-surface-2);
  border: 2px solid var(--clr-accent);
  margin-top: 22px;
  flex-shrink: 0;
  position: relative;
  z-index: 1;
  transition: box-shadow 0.2s;
}

.timeline-entry:hover .entry-dot {
  box-shadow: 0 0 0 5px var(--clr-accent-glow);
}

.entry-dot-major {
  width: 20px;
  height: 20px;
  background: var(--clr-major);
  border-color: var(--clr-major);
  margin-top: 19px;
  box-shadow: 0 0 14px rgba(247, 201, 72, 0.4);
}

/* ─── Card ─────────────────────────────────────────────────────────── */
.entry-card {
  background: var(--clr-surface);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-lg);
  padding: 1.6rem 1.75rem;
  box-shadow: var(--shadow-card);
  transition: border-color 0.2s, box-shadow 0.2s;
}

.entry-card:hover {
  border-color: var(--clr-border-hover);
  box-shadow: var(--shadow-card), 0 0 30px rgba(108, 99, 255, 0.06);
}

.entry-card-major {
  border-color: rgba(247, 201, 72, 0.25);
  background: linear-gradient(135deg, var(--clr-surface) 0%, rgba(247, 201, 72, 0.04) 100%);
}

.entry-card-major:hover {
  border-color: rgba(247, 201, 72, 0.45);
}

.entry-header {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
  margin-bottom: 0.85rem;
}

/* ─── Version Badge ────────────────────────────────────────────────── */
.version-badge {
  font-size: 0.78rem;
  font-weight: 700;
  font-family: var(--font-mono);
  letter-spacing: 0.04em;
  padding: 3px 11px;
  border-radius: var(--radius-sm);
  background: var(--clr-accent-glow);
  color: var(--clr-accent);
  border: 1px solid rgba(108, 99, 255, 0.3);
}

.version-patch {
  background: rgba(78, 151, 255, 0.10);
  color: var(--clr-accent-alt);
  border-color: rgba(78, 151, 255, 0.25);
}

.version-major {
  background: var(--clr-major-bg);
  color: var(--clr-major);
  border-color: rgba(247, 201, 72, 0.3);
}

/* ─── Tags ─────────────────────────────────────────────────────────── */
.entry-tags { display: flex; gap: 6px; flex-wrap: wrap; }

.tag {
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 2px 9px;
  border-radius: 100px;
  border: 1px solid transparent;
}

.tag-feature   { color: var(--clr-feature);  background: var(--clr-feature-bg);  border-color: rgba(108, 99, 255, 0.25); }
.tag-improvement { color: var(--clr-improve); background: var(--clr-improve-bg); border-color: rgba(34, 211, 168, 0.25); }
.tag-fix       { color: var(--clr-fix);       background: var(--clr-fix-bg);      border-color: rgba(245, 158, 66, 0.25); }
.tag-breaking  { color: var(--clr-breaking);  background: var(--clr-breaking-bg); border-color: rgba(240, 82, 99, 0.25); }

/* ─── Entry Content ────────────────────────────────────────────────── */
.entry-title {
  font-size: 1.15rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--clr-text);
  margin-bottom: 0.55rem;
  line-height: 1.35;
}

.entry-summary {
  color: var(--clr-text-dim);
  font-size: 0.9rem;
  margin-bottom: 1rem;
}

.entry-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-bottom: 1.2rem;
  padding: 1rem 1.1rem;
  background: var(--clr-surface-2);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-md);
}

.entry-list li {
  font-size: 0.875rem;
  color: var(--clr-text-dim);
  padding-left: 1.1rem;
  position: relative;
}

.entry-list li::before {
  content: '›';
  position: absolute;
  left: 0;
  color: var(--clr-accent);
  font-weight: 700;
}

.entry-list li strong { color: var(--clr-text); font-weight: 600; }

/* ─── Migration Link ───────────────────────────────────────────────── */
.migration-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--clr-major);
  background: var(--clr-major-bg);
  border: 1px solid rgba(247, 201, 72, 0.25);
  border-radius: var(--radius-sm);
  padding: 7px 14px;
  margin-bottom: 1rem;
  transition: opacity 0.15s;
}
.migration-link:hover { opacity: 0.82; text-decoration: none; }

/* ─── Read More ────────────────────────────────────────────────────── */
.read-more-btn {
  background: none;
  border: none;
  color: var(--clr-accent);
  font-size: 0.82rem;
  font-family: var(--font-sans);
  font-weight: 600;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 2px 0;
  transition: opacity 0.15s;
}

.read-more-btn:hover { opacity: 0.75; }

.read-more-btn .arrow {
  font-size: 0.7rem;
  transition: transform 0.22s ease;
  display: inline-block;
}

.read-more-btn[aria-expanded="true"] .arrow {
  transform: rotate(-180deg);
}

.read-more-content {
  margin-top: 1rem;
  padding-top: 1rem;
  border-top: 1px solid var(--clr-border);
}

.read-more-content p {
  font-size: 0.875rem;
  color: var(--clr-text-dim);
  margin-bottom: 0.75rem;
}

.read-more-content p:last-child { margin-bottom: 0; }

/* ─── No Results ───────────────────────────────────────────────────── */
.no-results {
  text-align: center;
  padding: 4rem 2rem;
  color: var(--clr-text-muted);
  font-size: 0.95rem;
}

/* ─── Footer ───────────────────────────────────────────────────────── */
.site-footer {
  border-top: 1px solid var(--clr-border);
  background: var(--clr-surface);
}

.footer-inner {
  max-width: 1080px;
  margin: 0 auto;
  padding: 1.5rem 2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
}

.footer-credit {
  font-size: 0.82rem;
  color: var(--clr-text-muted);
}

.footer-credit a { color: var(--clr-accent); font-weight: 600; }

.footer-links {
  display: flex;
  gap: 1.25rem;
  font-size: 0.82rem;
}

.footer-links a { color: var(--clr-text-muted); }
.footer-links a:hover { color: var(--clr-text); text-decoration: none; }

/* ─── Responsive ───────────────────────────────────────────────────── */
@media (max-width: 720px) {
  :root { --timeline-left: 0px; }

  .timeline-line { display: none; }

  .timeline-entry {
    grid-template-columns: var(--dot-size) 1fr;
    column-gap: 16px;
  }

  .entry-date-col {
    display: none;
  }

  .entry-date-mobile {
    font-size: 0.78rem;
    color: var(--clr-text-muted);
    font-weight: 500;
    margin-bottom: 0.6rem;
    display: block;
  }

  .changelog-hero { padding: 3rem 0 2.5rem; }
  .hero-title { font-size: 2.2rem; }
}

@media (max-width: 480px) {
  .changelog-page { padding: 0 1rem 4rem; }
  .entry-card { padding: 1.2rem 1.1rem; }
  .header-nav a:not(.btn-cta) { display: none; }
}