/* ═══════════════════════════════════════════════════════════════
   DESIGN SYSTEM — John Bryan Valle Portfolio
   Fonts: Fraunces (display) + DM Mono (body/mono)
   Theme: Near-black + electric amber accent
═══════════════════════════════════════════════════════════════ */

:root {
  /* Palette */
  --bg:          #0a0b0d;
  --bg-raised:   #0f1113;
  --bg-card:     #13161a;
  --bg-card-hi:  #181c21;
  --border:      #1e2228;
  --border-hi:   #272e38;
  --text:        #e4ddd2;
  --text-2:      #8a9099;
  --text-3:      #3d4550;
  --accent:      #e8a020;
  --accent-dim:  #7a4f08;
  --accent-glow: rgba(232, 160, 32, 0.12);
  --accent-text: #f5c060;
  --red:         #cc4444;

  /* Type */
  --font-display: 'Fraunces', Georgia, serif;
  --font-mono:    'DM Mono', 'Courier New', monospace;

  /* Spacing */
  --max-w:   1100px;
  --nav-h:   60px;
  --radius:  4px;
  --radius-lg: 10px;

  /* Motion */
  --ease: cubic-bezier(0.4, 0, 0.2, 1);
  --dur:  0.2s;
}

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

html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 300;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
}

a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }
button { cursor: pointer; font-family: inherit; }

/* ═══════════════════════════════════════════════════════════════
   NAV
═══════════════════════════════════════════════════════════════ */

.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--nav-h);
  background: rgba(10, 11, 13, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 clamp(16px, 5vw, 48px);
  gap: 24px;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--text);
  transition: color var(--dur) var(--ease);
}

.nav-logo:hover { color: var(--accent-text); }

.nav-logo-mark {
  width: 28px;
  height: 28px;
  background: var(--accent);
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #0a0b0d;
  flex-shrink: 0;
  transition: background var(--dur) var(--ease);
}

.nav-logo:hover .nav-logo-mark { background: var(--accent-text); }

.nav-logo-name {
  font-family: var(--font-display);
  font-size: 16px;
  font-weight: 500;
  letter-spacing: 0.01em;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 4px;
}

.nav-link {
  font-size: 12px;
  font-weight: 400;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-2);
  padding: 6px 14px;
  border-radius: var(--radius);
  border: 1px solid transparent;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease), background var(--dur) var(--ease);
}

.nav-link:hover {
  color: var(--text);
  border-color: var(--border-hi);
}

.nav-link--accent {
  color: var(--accent-text);
  border-color: var(--accent-dim);
}

.nav-link--accent:hover {
  background: var(--accent-glow);
  color: var(--accent-text);
  border-color: var(--accent);
}

/* back link used in post page */
.nav-back {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-2);
  transition: color var(--dur);
}

.nav-back:hover { color: var(--accent-text); }
.nav-back-arrow { font-style: normal; }

/* ═══════════════════════════════════════════════════════════════
   HERO / BANNER
═══════════════════════════════════════════════════════════════ */

.hero {
  max-width: var(--max-w);
  margin: 48px auto 0;
  padding: 0 clamp(16px, 5vw, 48px);
}

.hero-banner-link {
  display: block;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--border);
  transition: border-color var(--dur) var(--ease);
}

.hero-banner-link:hover { border-color: var(--border-hi); }

.hero-banner {
  width: 100%;
  height: auto;
  object-fit: cover;
  transition: opacity var(--dur) var(--ease);
}

.hero-banner-link:hover .hero-banner { opacity: 0.92; }

.hero-meta {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-top: 16px;
  flex-wrap: wrap;
}

.hero-tag {
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-3);
  font-weight: 400;
}

.hero-sep { color: var(--text-3); opacity: 0.5; }

/* ═══════════════════════════════════════════════════════════════
   FILTER BAR
═══════════════════════════════════════════════════════════════ */

.filter-bar {
  max-width: var(--max-w);
  margin: 36px auto 0;
  padding: 0 clamp(16px, 5vw, 48px);
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--border);
}

.filter-tabs {
  display: flex;
  gap: 0;
}

.filter-tab {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 12px 18px;
  font-size: 12px;
  font-weight: 400;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text-2);
  background: none;
  border: none;
  border-bottom: 2px solid transparent;
  margin-bottom: -1px;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.filter-tab:hover { color: var(--text); }

.filter-tab.active {
  color: var(--accent-text);
  border-bottom-color: var(--accent);
}

.filter-tab-count {
  font-size: 10px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 1px 6px;
  color: var(--text-3);
  font-weight: 500;
  transition: color var(--dur), border-color var(--dur), background var(--dur);
}

.filter-tab.active .filter-tab-count {
  background: var(--accent-glow);
  border-color: var(--accent-dim);
  color: var(--accent-text);
}

/* ═══════════════════════════════════════════════════════════════
   PROJECT GRID
═══════════════════════════════════════════════════════════════ */

.grid-container {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 32px clamp(16px, 5vw, 48px) 80px;
}

.project-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

/* Featured card spans full width */
.project-card--featured {
  grid-column: 1 / -1;
}

@keyframes fadeUp {
  from { opacity: 0; transform: translateY(12px); }
  to   { opacity: 1; transform: translateY(0); }
}

.project-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  animation: fadeUp 0.35s var(--ease) both;
  transition: border-color var(--dur) var(--ease), transform var(--dur) var(--ease), background var(--dur) var(--ease);
}

.project-card:hover {
  border-color: var(--border-hi);
  transform: translateY(-3px);
  background: var(--bg-card-hi);
}

.card-link {
  display: flex;
  flex-direction: column;
  height: 100%;
  text-decoration: none;
  color: inherit;
}

/* Featured card is horizontal */
.project-card--featured .card-link {
  flex-direction: row;
}

.card-thumb {
  position: relative;
  overflow: hidden;
  background: var(--bg-raised);
  aspect-ratio: 16 / 10;
  flex-shrink: 0;
}

.project-card--featured .card-thumb {
  width: 46%;
  aspect-ratio: unset;
}

/* ─── Static thumbnail image ─── */
.card-thumb-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  /* Separate transitions: opacity for video crossfade, transform for the zoom */
  transition: opacity 0.35s var(--ease), transform 0.4s var(--ease);
}

/* When the card has a video, fade out the image on hover */
.project-card.has-video:hover .card-thumb-img {
  opacity: 0;
  /* Keep the scale-up so the transition back feels natural */
  transform: scale(1.04);
}

/* Cards WITHOUT video still get the zoom */
.project-card:hover .card-thumb-img { transform: scale(1.04); }

/* ─── Video layer (sits above the image, below the overlay) ─── */
.card-thumb-video {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0;
  transition: opacity 0.35s var(--ease);
  /* Pointer events off so the anchor click still works */
  pointer-events: none;
}

.project-card.has-video:hover .card-thumb-video {
  opacity: 1;
}

/* ─── "Preview" badge — signals a video exists; fades out on hover ─── */
.card-thumb-video-badge {
  position: absolute;
  bottom: 12px;
  right: 12px;
  display: flex;
  align-items: center;
  gap: 5px;
  font-size: 9px;
  font-weight: 400;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent-text);
  background: rgba(10, 11, 13, 0.78);
  border: 1px solid var(--accent-dim);
  border-radius: 20px;
  padding: 3px 10px 3px 8px;
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  transition: opacity 0.25s var(--ease);
  pointer-events: none;
  z-index: 2;
}

/* Badge disappears once video is playing */
.project-card.has-video:hover .card-thumb-video-badge {
  opacity: 0;
}

.card-thumb-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(10,11,13,0.4) 0%, transparent 50%);
  pointer-events: none;
  z-index: 1;
}

.card-cat {
  position: absolute;
  top: 12px;
  left: 12px;
  font-size: 9px;
  font-weight: 500;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--accent-text);
  background: rgba(10, 11, 13, 0.75);
  border: 1px solid var(--accent-dim);
  border-radius: 20px;
  padding: 3px 10px;
  backdrop-filter: blur(4px);
  z-index: 2;
}

.card-body {
  padding: 20px 22px 22px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  flex: 1;
}

.card-meta {
  display: flex;
  align-items: center;
  gap: 10px;
}

.card-date {
  font-size: 10px;
  letter-spacing: 0.1em;
  color: var(--text-3);
  text-transform: uppercase;
}

.card-title {
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 400;
  line-height: 1.3;
  color: var(--text);
  letter-spacing: -0.01em;
}

.project-card--featured .card-title {
  font-size: 24px;
}

.card-subtitle {
  font-size: 13px;
  color: var(--text-2);
  line-height: 1.6;
}

.card-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 4px;
}

.tag {
  font-size: 10px;
  font-weight: 400;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-3);
  border: 1px solid var(--border-hi);
  border-radius: 3px;
  padding: 2px 8px;
  transition: color var(--dur), border-color var(--dur);
}

.project-card:hover .tag {
  color: var(--text-2);
  border-color: var(--border-hi);
}

.card-cta {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent);
  margin-top: auto;
  padding-top: 12px;
  transition: gap var(--dur) var(--ease), color var(--dur);
}

.project-card:hover .card-cta { color: var(--accent-text); gap: 10px; }

.card-arrow { transition: transform var(--dur) var(--ease); }
.project-card:hover .card-arrow { transform: translateX(3px); }

/* ═══════════════════════════════════════════════════════════════
   EMPTY STATE
═══════════════════════════════════════════════════════════════ */

.empty-state {
  grid-column: 1 / -1;
  text-align: center;
  color: var(--text-3);
  font-size: 13px;
  letter-spacing: 0.08em;
  padding: 64px 0;
}

/* ═══════════════════════════════════════════════════════════════
   FOOTER
═══════════════════════════════════════════════════════════════ */

.footer {
  border-top: 1px solid var(--border);
  padding: 48px clamp(16px, 5vw, 48px) 32px;
}

.footer-inner {
  max-width: var(--max-w);
  margin: 0 auto 36px;
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 40px;
}

.footer-logo {
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 400;
  color: var(--text);
  margin-bottom: 10px;
}

.footer-desc {
  font-size: 12px;
  color: var(--text-2);
  line-height: 1.7;
  max-width: 280px;
}

.footer-label {
  font-size: 10px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text-3);
  margin-bottom: 12px;
  font-weight: 500;
}

.footer-link {
  display: block;
  font-size: 12px;
  color: var(--text-2);
  margin-bottom: 8px;
  transition: color var(--dur);
}

.footer-link:hover { color: var(--accent-text); }

.footer-bottom {
  max-width: var(--max-w);
  margin: 0 auto;
  padding-top: 24px;
  border-top: 1px solid var(--border);
  display: flex;
  justify-content: space-between;
  font-size: 11px;
  color: var(--text-3);
  letter-spacing: 0.06em;
}

/* ═══════════════════════════════════════════════════════════════
   POST PAGE
═══════════════════════════════════════════════════════════════ */

.post-shell {
  max-width: 720px;
  margin: 0 auto;
  padding: 48px clamp(16px, 5vw, 40px) 100px;
}

.post-header {
  margin-bottom: 40px;
  padding-bottom: 32px;
  border-bottom: 1px solid var(--border);
}

.post-cat-date {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 16px;
}

.post-cat {
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--accent-text);
  background: var(--accent-glow);
  border: 1px solid var(--accent-dim);
  border-radius: 20px;
  padding: 3px 12px;
}

.post-date {
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--text-3);
  text-transform: uppercase;
}

.post-title {
  font-family: var(--font-display);
  font-size: clamp(26px, 5vw, 42px);
  font-weight: 400;
  line-height: 1.2;
  color: var(--text);
  letter-spacing: -0.02em;
  margin-bottom: 14px;
}

.post-subtitle {
  font-size: 15px;
  color: var(--text-2);
  line-height: 1.6;
  margin-bottom: 18px;
}

.post-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

/* ─── Hero image in post ─── */
.post-hero-img {
  width: 100%;
  height: auto;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  margin-bottom: 44px;
}

/* ─── Markdown rendered content ─── */
.post-content {
  font-size: 15px;
  font-weight: 300;
  line-height: 1.85;
  color: var(--text-2);
}

.post-content h1,
.post-content h2,
.post-content h3,
.post-content h4 {
  font-family: var(--font-display);
  font-weight: 400;
  color: var(--text);
  letter-spacing: -0.01em;
  margin-top: 2.4em;
  margin-bottom: 0.6em;
  line-height: 1.25;
}

.post-content h1 { font-size: 30px; }
.post-content h2 { font-size: 22px; border-bottom: 1px solid var(--border); padding-bottom: 8px; }
.post-content h3 { font-size: 17px; }
.post-content h4 { font-size: 14px; text-transform: uppercase; letter-spacing: 0.1em; color: var(--text-2); }

.post-content p { margin-bottom: 1.2em; }

.post-content a {
  color: var(--accent-text);
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-color: var(--accent-dim);
  transition: text-decoration-color var(--dur), color var(--dur);
}

.post-content a:hover {
  color: var(--text);
  text-decoration-color: var(--accent);
}

.post-content strong {
  font-weight: 500;
  color: var(--text);
}

.post-content em { font-style: italic; }

.post-content ul, .post-content ol {
  padding-left: 1.4em;
  margin-bottom: 1.2em;
}

.post-content li { margin-bottom: 0.4em; }

.post-content blockquote {
  margin: 1.8em 0;
  padding: 14px 20px;
  border-left: 3px solid var(--accent);
  background: var(--bg-raised);
  border-radius: 0 var(--radius) var(--radius) 0;
  color: var(--text-2);
  font-style: italic;
}

.post-content pre {
  background: var(--bg-raised);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 20px 22px;
  overflow-x: auto;
  margin: 1.6em 0;
  font-size: 13px;
  line-height: 1.6;
}

.post-content code {
  font-family: var(--font-mono);
  font-size: 13px;
  background: var(--bg-raised);
  border: 1px solid var(--border);
  border-radius: 3px;
  padding: 1px 6px;
  color: var(--accent-text);
}

.post-content pre code {
  background: none;
  border: none;
  padding: 0;
  color: var(--text-2);
}

/* Images inside markdown — centered, captioned */
.post-content img {
  display: block;
  max-width: 100%;
  height: auto;
  margin: 2em auto;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
}

.post-content figure {
  margin: 2em 0;
  text-align: center;
}

.post-content figcaption {
  font-size: 12px;
  color: var(--text-3);
  margin-top: 8px;
  letter-spacing: 0.05em;
}

/* horizontal rule */
.post-content hr {
  border: none;
  border-top: 1px solid var(--border);
  margin: 2.4em 0;
}

/* table */
.post-content table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.6em 0;
  font-size: 13px;
}

.post-content th {
  text-align: left;
  font-weight: 500;
  color: var(--text);
  border-bottom: 1px solid var(--border-hi);
  padding: 8px 12px;
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.post-content td {
  border-bottom: 1px solid var(--border);
  padding: 9px 12px;
  color: var(--text-2);
}

/* ─── Loading / error states ─── */
.post-loading {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--text-3);
  font-size: 12px;
  letter-spacing: 0.08em;
  padding: 60px 0;
  justify-content: center;
}

.post-error {
  color: var(--red);
  font-size: 13px;
  padding: 40px 0;
  text-align: center;
}

/* ─── Post nav (prev/next) ─── */
.post-nav {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-top: 60px;
  padding-top: 32px;
  border-top: 1px solid var(--border);
}

.post-nav-link {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 16px 18px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  text-decoration: none;
  color: inherit;
  transition: border-color var(--dur), background var(--dur);
}

.post-nav-link:hover {
  border-color: var(--border-hi);
  background: var(--bg-card-hi);
}

.post-nav-link.next { text-align: right; }

.post-nav-label {
  font-size: 10px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text-3);
}

.post-nav-title {
  font-family: var(--font-display);
  font-size: 15px;
  color: var(--text);
  font-weight: 400;
}

/* ═══════════════════════════════════════════════════════════════
   SCROLLBAR
═══════════════════════════════════════════════════════════════ */

::-webkit-scrollbar { width: 5px; height: 5px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border-hi); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--text-3); }

/* ═══════════════════════════════════════════════════════════════
   RESPONSIVE
═══════════════════════════════════════════════════════════════ */

@media (max-width: 900px) {
  .project-grid { grid-template-columns: repeat(2, 1fr); }
  .project-card--featured .card-link { flex-direction: column; }
  .project-card--featured .card-thumb { width: 100%; aspect-ratio: 16 / 10; }
  .footer-inner { grid-template-columns: 1fr 1fr; }
  .footer-inner > .footer-col:first-child { grid-column: 1 / -1; }
}

@media (max-width: 600px) {
  .project-grid { grid-template-columns: 1fr; }
  .filter-tab { padding: 10px 12px; font-size: 11px; }
  .footer-inner { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; gap: 8px; }
  .post-nav { grid-template-columns: 1fr; }
}