/* =====================================================
   QTR Portfolio — Frontend CSS
   ===================================================== */

:root {
  --bg:             #0f172a;
  --bg-card:        #1e293b;
  --bg-card-hover:  #263348;
  --color-text:     #f1f5f9;
  --color-muted:    #64748b;
  --color-border:   #1e293b;
  --color-primary:  #6366f1;
  --color-success:  #22c55e;
  --color-warning:  #f59e0b;
  --color-info:     #38bdf8;
  --color-danger:   #ef4444;
  --header-h:       60px;
  --radius:         12px;
  --transition:     .2s ease;
}

/* ── Reset ────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
body {
  font-family: 'Inter', system-ui, sans-serif;
  background: var(--bg);
  color: var(--color-text);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }
img, video { display: block; max-width: 100%; }

/* ── Container ────────────────────────────────────── */
.container {
  width: 100%;
  max-width: 1140px;
  margin: 0 auto;
  padding: 0 24px;
}
.container-narrow { max-width: 780px; }

/* ── Header ───────────────────────────────────────── */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--header-h);
  background: rgba(15,23,42,.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(255,255,255,.06);
}
.header-inner {
  max-width: 1140px;
  margin: 0 auto;
  padding: 0 24px;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.header-logo {
  font-weight: 700;
  font-size: 1.1em;
  color: var(--color-primary);
  letter-spacing: .3px;
}
.header-nav { display: flex; gap: 8px; }
.nav-link {
  padding: 7px 14px;
  border-radius: 7px;
  font-size: .88em;
  font-weight: 500;
  color: var(--color-muted);
  transition: color var(--transition), background var(--transition);
}
.nav-link:hover { color: var(--color-text); background: rgba(255,255,255,.05); }
.nav-link.active { color: var(--color-text); background: rgba(99,102,241,.15); }

/* ── Main ─────────────────────────────────────────── */
.site-main { flex: 1; }

/* ── Footer ───────────────────────────────────────── */
.site-footer {
  padding: 32px 24px;
  border-top: 1px solid rgba(255,255,255,.06);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
}
.footer-links { display: flex; gap: 12px; flex-wrap: wrap; justify-content: center; }
.footer-icon-btn {
  width: 40px; height: 40px;
  border-radius: 50%;
  background: rgba(255,255,255,.06);
  border: 1px solid rgba(255,255,255,.1);
  display: flex; align-items: center; justify-content: center;
  font-size: 1.1em;
  color: var(--color-muted);
  transition: color var(--transition), background var(--transition), transform var(--transition);
}
.footer-icon-btn:hover {
  color: var(--color-text);
  background: rgba(99,102,241,.2);
  transform: translateY(-2px);
}
.footer-copy { font-size: .8em; color: var(--color-muted); }

/* ── Section ──────────────────────────────────────── */
.projects-section,
.about-section { padding: 52px 0; }

.section-head { margin-bottom: 32px; }
.section-title {
  font-size: 1.75em;
  font-weight: 700;
  letter-spacing: -.3px;
}

/* ── Filter bar ───────────────────────────────────── */
.filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: center;
  margin-bottom: 32px;
}
.filter-group { display: flex; }
.filter-select {
  padding: 7px 12px;
  background: var(--bg-card);
  border: 1px solid rgba(255,255,255,.08);
  border-radius: 8px;
  color: var(--color-text);
  font-size: .85em;
  cursor: pointer;
  appearance: none;
  -webkit-appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%2394a3b8' stroke-width='1.5' fill='none' stroke-linecap='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 10px center;
  padding-right: 30px;
  transition: border-color var(--transition);
}
.filter-select:focus { outline: none; border-color: var(--color-primary); }
.filter-btn {
  padding: 7px 16px;
  border: 1px solid rgba(255,255,255,.08);
  border-radius: 8px;
  background: var(--bg-card);
  color: var(--color-muted);
  font-size: .85em;
  cursor: pointer;
  transition: all var(--transition);
}
.filter-btn.active, .filter-btn:hover {
  background: rgba(99,102,241,.15);
  border-color: var(--color-primary);
  color: var(--color-text);
}

/* ── Projects Grid ────────────────────────────────── */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 20px;
}
.project-card {
  position: relative;
  display: flex;
  flex-direction: column;
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--card-bg, var(--bg-card));
  border: 1px solid rgba(255,255,255,.07);
  min-height: 200px;
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
  cursor: pointer;
}
.project-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 16px 40px rgba(0,0,0,.4);
  border-color: rgba(99,102,241,.3);
}
.card-bg-layer {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(255,255,255,.04) 0%, transparent 60%);
  pointer-events: none;
}
.card-icon-wrap {
  padding: 24px 20px 10px;
  flex-shrink: 0;
}
.card-icon {
  width: 52px; height: 52px;
  object-fit: contain;
  border-radius: 10px;
}
.card-body {
  flex: 1;
  padding: 16px 20px 12px;
}
.card-title {
  font-size: 1em;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 6px;
  line-height: 1.3;
}
.card-meta {
  font-size: .78em;
  color: rgba(241,245,249,.5);
  display: flex;
  align-items: center;
  gap: 6px;
}
.card-sep { opacity: .5; }
.card-footer {
  padding: 10px 20px 16px;
  display: flex;
  align-items: center;
  gap: 7px;
}
/* Status dot */
.status-dot {
  width: 7px; height: 7px;
  border-radius: 50%;
  flex-shrink: 0;
}
.status-dot.status-planned   { background: var(--color-muted); }
.status-dot.status-started   { background: var(--color-info);    box-shadow: 0 0 6px var(--color-info); }
.status-dot.status-finished  { background: var(--color-success); box-shadow: 0 0 6px var(--color-success); }
.status-dot.status-postponed { background: var(--color-warning); }
.status-label { font-size: .78em; color: rgba(241,245,249,.55); }
.empty-state { color: var(--color-muted); text-align: center; padding: 60px 0; }

/* ── Status pills ─────────────────────────────────── */
.status-pill {
  display: inline-block;
  padding: 3px 12px;
  border-radius: 20px;
  font-size: .78em;
  font-weight: 600;
  flex-shrink: 0;
}
.status-pill.status-planned   { background: rgba(148,163,184,.12); color: var(--color-muted); }
.status-pill.status-started   { background: rgba(56,189,248,.12);  color: var(--color-info); }
.status-pill.status-finished  { background: rgba(34,197,94,.12);   color: var(--color-success); }
.status-pill.status-postponed { background: rgba(245,158,11,.12);  color: var(--color-warning); }

/* ── About page ───────────────────────────────────── */
.about-content { margin-top: 8px; }

/* ── Prose (rich text içerik) ─────────────────────── */
.prose {
  font-size: .95em;
  line-height: 1.75;
  color: #cbd5e1;
}
.prose h1, .prose h2, .prose h3 {
  color: var(--color-text);
  font-weight: 700;
  line-height: 1.3;
  margin-top: 1.5em;
  margin-bottom: .5em;
}
.prose h1 { font-size: 1.6em; }
.prose h2 { font-size: 1.25em; }
.prose h3 { font-size: 1.05em; }
.prose p  { margin-bottom: 1em; }
.prose a  { color: var(--color-primary); text-decoration: underline; }
.prose a:hover { color: #818cf8; }
.prose ul, .prose ol { padding-left: 1.5em; margin-bottom: 1em; }
.prose li { margin-bottom: .3em; }
.prose pre {
  background: rgba(0,0,0,.35);
  border: 1px solid rgba(255,255,255,.08);
  border-radius: 8px;
  padding: 16px;
  overflow-x: auto;
  font-size: .85em;
  margin-bottom: 1em;
}
.prose code {
  background: rgba(0,0,0,.3);
  padding: 2px 6px;
  border-radius: 4px;
  font-size: .88em;
}
.prose blockquote {
  border-left: 3px solid var(--color-primary);
  padding-left: 16px;
  color: var(--color-muted);
  font-style: italic;
  margin: 1em 0;
}
.prose img { border-radius: 8px; margin: 12px 0; max-width: 100%; }
.prose table { width: 100%; border-collapse: collapse; margin-bottom: 1em; }
.prose th { text-align: left; padding: 8px 12px; border-bottom: 2px solid rgba(255,255,255,.1); font-size: .85em; }
.prose td { padding: 8px 12px; border-bottom: 1px solid rgba(255,255,255,.06); }

/* ── Project Detail ───────────────────────────────── */
.detail-hero {
  padding: 60px 0;
  border-bottom: 1px solid rgba(255,255,255,.06);
}
.detail-back { margin-bottom: 24px; }
.back-link {
  font-size: .85em;
  color: var(--color-muted);
  transition: color var(--transition);
}
.back-link:hover { color: var(--color-text); }
.detail-hero-content {}

.detail-blocks {}
.detail-block { padding: 48px 0; border-bottom: 1px solid rgba(255,255,255,.05); }
.block-windows {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
}
.block-window {}

.detail-meta-section { padding: 52px 0; }

.detail-info-card {
  background: var(--bg-card);
  border: 1px solid rgba(255,255,255,.07);
  border-radius: var(--radius);
  padding: 28px 32px;
  margin-bottom: 32px;
}
.detail-info-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 12px;
  flex-wrap: wrap;
}
.detail-title {
  font-size: 1.5em;
  font-weight: 700;
  letter-spacing: -.2px;
}
.detail-description {
  color: var(--color-muted);
  font-size: .9em;
  line-height: 1.6;
  margin-bottom: 16px;
}
.detail-tags { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 16px; }
.tag {
  padding: 4px 12px;
  border: 1px solid rgba(255,255,255,.1);
  border-radius: 20px;
  font-size: .78em;
  color: var(--color-muted);
}
.detail-dates {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  padding-top: 14px;
  border-top: 1px solid rgba(255,255,255,.06);
}
.date-item { display: flex; flex-direction: column; gap: 3px; }
.date-label { font-size: .72em; color: var(--color-muted); }
.date-value { font-size: .85em; font-weight: 500; }

.btn-visit {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 9px 18px;
  background: var(--color-primary);
  color: #fff;
  border-radius: 8px;
  font-size: .88em;
  font-weight: 500;
  transition: background var(--transition), transform var(--transition);
}
.btn-visit:hover { background: #4f46e5; transform: translateY(-1px); }

/* Detail sections */
.detail-section { margin-bottom: 40px; }
.detail-section-title {
  font-size: 1em;
  font-weight: 600;
  color: var(--color-muted);
  text-transform: uppercase;
  letter-spacing: .5px;
  margin-bottom: 16px;
  padding-bottom: 8px;
  border-bottom: 1px solid rgba(255,255,255,.06);
}

/* Project links */
.project-links { display: flex; flex-wrap: wrap; gap: 10px; }
.project-link-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  background: var(--bg-card);
  border: 1px solid rgba(255,255,255,.1);
  border-radius: 8px;
  font-size: .85em;
  color: var(--color-text);
  transition: all var(--transition);
}
.project-link-btn:hover {
  background: rgba(99,102,241,.15);
  border-color: var(--color-primary);
}

/* Media gallery */
.media-gallery {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 12px;
}
.media-item {
  position: relative;
  border-radius: 8px;
  overflow: hidden;
  aspect-ratio: 16/10;
  background: #0a1628;
  cursor: pointer;
}
.gallery-img {
  width: 100%; height: 100%;
  object-fit: cover;
  transition: transform var(--transition);
}
.gallery-video { width: 100%; height: 100%; object-fit: cover; }
.media-overlay {
  position: absolute;
  inset: 0;
  background: rgba(0,0,0,.4);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: opacity var(--transition);
  font-size: 1.4em;
  color: #fff;
}
.media-item:hover .gallery-img  { transform: scale(1.04); }
.media-item:hover .media-overlay { opacity: 1; }

/* Dev notes accordion */
.dev-notes {
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.note-item {
  background: var(--bg-card);
  border: 1px solid rgba(255,255,255,.07);
  border-radius: 8px;
  overflow: hidden;
}
.note-toggle {
  width: 100%;
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 18px;
  background: none;
  border: none;
  color: var(--color-text);
  cursor: pointer;
  text-align: left;
  font-family: inherit;
  transition: background var(--transition);
}
.note-toggle:hover { background: rgba(255,255,255,.03); }
.note-version { font-weight: 700; font-size: .95em; }
.note-type-badge {
  padding: 2px 10px;
  border-radius: 12px;
  font-size: .72em;
  font-weight: 600;
}
.note-date { font-size: .82em; color: var(--color-muted); margin-right: auto; }
.note-chevron {
  font-size: .78em;
  color: var(--color-muted);
  transition: transform .2s;
  flex-shrink: 0;
}
.note-body {
  padding: 0 18px 18px;
  border-top: 1px solid rgba(255,255,255,.06);
}
.note-body .prose { padding-top: 14px; }

/* ── Responsive ───────────────────────────────────── */
@media (max-width: 768px) {
  .projects-grid { grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); }
  .block-windows { grid-template-columns: 1fr; }
  .detail-info-card { padding: 20px; }
  .detail-info-header { flex-direction: column; }
  .section-title { font-size: 1.4em; }
}
@media (max-width: 480px) {
  .projects-grid { grid-template-columns: 1fr; }
  .media-gallery { grid-template-columns: repeat(2, 1fr); }
  .header-logo { font-size: .95em; }
}