:root {
  --bg: #0b1220;
  --bg-soft: #141c2f;
  --panel: rgba(20, 28, 47, 0.78);
  --panel-strong: rgba(17, 24, 39, 0.92);
  --line: rgba(255, 255, 255, 0.08);
  --text: #edf2ff;
  --muted: #a8b3cf;
  --primary: #e94560;
  --primary-dark: #b92d45;
  --secondary: #0f3460;
  --success: #22c55e;
  --danger: #ef4444;
  --warning: #f59e0b;
  --shadow: 0 25px 80px rgba(0, 0, 0, 0.3);
  --radius: 24px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: 'Inter', sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at top left, rgba(233, 69, 96, 0.18), transparent 32%),
    radial-gradient(circle at top right, rgba(15, 52, 96, 0.28), transparent 34%),
    linear-gradient(180deg, #09101c 0%, #0f172a 50%, #09101c 100%);
}

body::before {
  content: '';
  position: fixed;
  inset: 0;
  pointer-events: none;
  background-image: linear-gradient(rgba(255,255,255,.02) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.02) 1px, transparent 1px);
  background-size: 32px 32px;
  mask-image: radial-gradient(circle at center, black, transparent 85%);
}

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

button,
input,
textarea {
  font: inherit;
}

button {
  cursor: pointer;
}

.hidden {
  display: none !important;
}

.app-shell {
  width: min(1320px, calc(100% - 32px));
  margin: 0 auto;
  padding: 24px 0 48px;
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 18px 22px;
  position: sticky;
  top: 16px;
  z-index: 20;
  margin-bottom: 24px;
}

.glass,
.glass-soft,
.modal-card,
.login-card-panel,
.dashboard-card,
.part-card,
.admin-item,
.history-item,
.detail-card {
  border: 1px solid var(--line);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  box-shadow: var(--shadow);
}

.glass {
  background: var(--panel);
  border-radius: var(--radius);
}

.glass-soft {
  background: rgba(255, 255, 255, 0.04);
  border-radius: 20px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 14px;
}

.brand-logo,
.hero-logo,
.login-logo {
  width: 64px;
  height: 64px;
  border-radius: 18px;
  object-fit: cover;
  background: #fff;
}

.brand-kicker,
.eyebrow {
  margin: 0 0 6px;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 1.6px;
  font-size: 11px;
}

.brand h1,
.section-heading h2,
.login-card-panel h2,
.detail-content h3,
.modal-card h3 {
  margin: 0;
}

.topbar-action,
.primary-btn,
.secondary-btn,
.danger-btn,
.icon-btn {
  border: none;
  border-radius: 16px;
  transition: .25s ease;
}

.topbar-action,
.primary-btn,
.secondary-btn,
.danger-btn {
  padding: 12px 18px;
  font-weight: 600;
}

.topbar-action,
.primary-btn {
  background: linear-gradient(135deg, var(--primary), #ff6b6b);
  color: #fff;
}

.topbar-action.secondary,
.secondary-btn {
  background: rgba(255,255,255,.06);
  color: var(--text);
  border: 1px solid var(--line);
}

.topbar-action.danger,
.danger-btn {
  background: rgba(239, 68, 68, .18);
  color: #fecaca;
  border: 1px solid rgba(239,68,68,.25);
}

.topbar-action:hover,
.primary-btn:hover,
.secondary-btn:hover,
.danger-btn:hover,
.icon-btn:hover {
  transform: translateY(-1px);
  filter: brightness(1.05);
}

.hero {
  display: grid;
  grid-template-columns: 1.4fr .8fr;
  gap: 24px;
  padding: 28px;
  margin-bottom: 20px;
}

.hero-badge,
.category-chip,
.count-chip,
.meta-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 14px;
  border-radius: 999px;
  border: 1px solid rgba(233, 69, 96, .25);
  background: rgba(233, 69, 96, .12);
  color: #ffd5dc;
  font-size: 13px;
}

.hero-copy h2 {
  font-size: clamp(28px, 4vw, 48px);
  line-height: 1.08;
  margin: 18px 0 14px;
}

.hero-copy p,
.detail-content p,
.admin-item p,
.history-item p,
.login-card-panel p {
  color: var(--muted);
  line-height: 1.7;
}

.hero-card {
  display: grid;
  place-items: center;
  min-height: 240px;
}

.hero-logo {
  width: min(260px, 100%);
  height: auto;
  padding: 16px;
}

.toolbar {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  padding: 18px 20px;
  margin-bottom: 16px;
}

.search-box {
  display: flex;
  align-items: center;
  gap: 12px;
  flex: 1;
  padding: 14px 16px;
  border-radius: 18px;
  background: rgba(255,255,255,.04);
  border: 1px solid var(--line);
}

.search-box input,
.stack-form input,
.stack-form textarea {
  width: 100%;
  border: none;
  outline: none;
  background: transparent;
  color: var(--text);
}

.stack-form input,
.stack-form textarea {
  border: 1px solid var(--line);
  background: rgba(255,255,255,.03);
  border-radius: 16px;
  padding: 14px 16px;
}

.stack-form textarea {
  resize: vertical;
  min-height: 120px;
}

.stack-form label {
  display: grid;
  gap: 8px;
}

.stack-form {
  display: grid;
  gap: 14px;
}

.stats {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.stat-pill {
  min-width: 110px;
  padding: 10px 14px;
  border-radius: 18px;
  background: rgba(255,255,255,.04);
  border: 1px solid var(--line);
  display: grid;
  gap: 4px;
}

.stat-pill strong,
.dashboard-card strong {
  font-size: 24px;
}

.stat-pill span,
.dashboard-card span,
.meta-row {
  color: var(--muted);
  font-size: 13px;
}

.filters {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin-bottom: 18px;
}

.filter-btn {
  border: 1px solid var(--line);
  background: rgba(255,255,255,.04);
  color: var(--text);
  border-radius: 999px;
  padding: 10px 16px;
}

.filter-btn.active {
  background: rgba(233, 69, 96, .16);
  border-color: rgba(233, 69, 96, .35);
}

.parts-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 18px;
}

.part-card {
  overflow: hidden;
  border-radius: 24px;
  background: var(--panel-strong);
}

.part-media {
  height: 240px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: #fff;
  padding: 14px;
  overflow: hidden;
}

.part-media img,
.detail-media img,
.preview-image,
.admin-thumb img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  object-position: center center;
  display: block;
  margin: 0 auto;
}

.part-body {
  padding: 18px;
  display: grid;
  gap: 10px;
}

.part-body h3,
.admin-item h3 {
  margin: 0;
  font-size: 20px;
}

.part-body p {
  margin: 0;
  color: var(--muted);
  line-height: 1.6;
  display: -webkit-box;
  -webkit-line-clamp: 4;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

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

.detail-overlay,
.modal-overlay {
  position: fixed;
  inset: 0;
  display: none;
  place-items: center;
  background: rgba(3, 7, 18, .75);
  padding: 20px;
  z-index: 100;
}

.detail-overlay.active,
.modal-overlay.active {
  display: grid;
}

.detail-card {
  width: min(960px, 100%);
  border-radius: 28px;
  background: var(--panel-strong);
  padding: 22px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 22px;
  position: relative;
}

.detail-media {
  min-height: 340px;
  height: 340px;
  background: #fff;
  border-radius: 20px;
  display: grid;
  place-items: center;
  padding: 16px;
  overflow: hidden;
}

.close-btn,
.icon-btn {
  width: 42px;
  height: 42px;
  display: inline-grid;
  place-items: center;
  background: rgba(255,255,255,.08);
  color: var(--text);
}

.close-btn {
  position: absolute;
  right: 18px;
  top: 18px;
}

.admin-main {
  display: grid;
  gap: 20px;
}

.login-panel {
  min-height: calc(100vh - 180px);
  display: grid;
  place-items: center;
  padding: 20px;
}

.login-card-panel,
.modal-card {
  width: min(540px, 100%);
  padding: 28px;
  border-radius: 28px;
  background: var(--panel-strong);
}

.admin-layout {
  display: grid;
  gap: 20px;
}

.dashboard-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}

.dashboard-card,
.panel-section,
.admin-item,
.history-item {
  padding: 20px;
}

.admin-columns {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 20px;
}

.section-heading {
  margin-bottom: 18px;
}

.section-heading.split {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.upload-box {
  border: 1px dashed rgba(255,255,255,.2);
  border-radius: 18px;
  padding: 16px;
  background: rgba(255,255,255,.02);
}

.preview-image {
  width: 100%;
  height: 220px;
  padding: 12px;
  background: #fff;
  border-radius: 20px;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
}

.preview-image img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  object-position: center center;
  display: block;
  margin: 0 auto;
}

.admin-list,
.history-list {
  display: grid;
  gap: 14px;
}

.admin-item,
.history-item {
  border-radius: 20px;
  background: rgba(255,255,255,.04);
  display: grid;
  gap: 14px;
}

.admin-item-top {
  display: grid;
  grid-template-columns: 112px 1fr auto;
  gap: 16px;
  align-items: start;
}

.admin-thumb {
  width: 112px;
  height: 112px;
  border-radius: 18px;
  background: #fff;
  display: grid;
  place-items: center;
  overflow: hidden;
}

.admin-thumb img {
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
}

.admin-actions {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.error-text {
  color: #fca5a5;
  min-height: 20px;
  margin: 0;
}

.toast-container {
  position: fixed;
  right: 18px;
  bottom: 18px;
  display: grid;
  gap: 10px;
  z-index: 200;
}

.toast {
  padding: 14px 16px;
  border-radius: 18px;
  background: rgba(15, 23, 42, .94);
  border: 1px solid var(--line);
  min-width: 260px;
}

.toast.success { border-color: rgba(34,197,94,.35); }
.toast.error { border-color: rgba(239,68,68,.35); }
.toast.info { border-color: rgba(14,165,233,.35); }

@media (max-width: 1024px) {
  .hero,
  .admin-columns,
  .detail-card {
    grid-template-columns: 1fr;
  }

  .dashboard-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 720px) {
  .app-shell {
    width: min(100% - 20px, 1320px);
    padding-top: 12px;
  }

  .topbar,
  .toolbar {
    flex-direction: column;
    align-items: stretch;
  }

  .topbar-actions,
  .stats {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
  }

  .dashboard-grid {
    grid-template-columns: 1fr;
  }

  .admin-item-top {
    grid-template-columns: 1fr;
  }

  .admin-thumb {
    width: 100%;
    height: 180px;
  }
}