/* VulnShop PHP Lab — self-contained, dark theme, no external CDN */
:root {
  --bg: #0f1419;
  --bg-card: #1a222d;
  --border: #2d3a4a;
  --text: #e8edf4;
  --muted: #8b9cb3;
  --accent: #3d9eff;
  --accent-dim: #2a6fb8;
  --danger: #e85d6a;
  --ok: #4caf7c;
  --font: "Segoe UI", system-ui, -apple-system, sans-serif;
  --radius: 10px;
  --shadow: 0 4px 24px rgba(0, 0, 0, 0.35);
}

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

html { font-size: 16px; scroll-behavior: smooth; }

body {
  margin: 0;
  min-height: 100vh;
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.5;
}

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
a:focus-visible, button:focus-visible, .btn:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

code {
  background: #252d38;
  padding: 0.15em 0.4em;
  border-radius: 4px;
  font-size: 0.9em;
}

.container {
  width: min(1100px, 100% - 2rem);
  margin-inline: auto;
}

/* Header */
.site-header {
  background: linear-gradient(180deg, #1a222d 0%, var(--bg) 100%);
  border-bottom: 1px solid var(--border);
  padding: 0.75rem 0;
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: var(--shadow);
}

.header-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
}

.logo {
  font-weight: 700;
  font-size: 1.2rem;
  color: var(--text);
  letter-spacing: -0.02em;
}
.logo span { color: var(--accent); font-weight: 600; }
.logo:hover { text-decoration: none; color: var(--text); }

.nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem 1rem;
  align-items: center;
  font-size: 0.95rem;
}
.nav a { color: var(--muted); }
.nav a:hover, .nav a.active { color: var(--text); }
.nav a.active { font-weight: 600; }

.main-content { padding: 2rem 0 3rem; min-height: 50vh; }

.page-title { font-size: 1.75rem; font-weight: 700; margin: 0 0 0.5rem; }
.lead { color: var(--muted); font-size: 1.05rem; margin: 0 0 1.5rem; }

.muted { color: var(--muted); font-size: 0.95rem; }

/* Cards & grid */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 1.25rem;
  margin-top: 1.5rem;
}

.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.25rem;
  box-shadow: var(--shadow);
}
.card h2 { font-size: 1.1rem; margin: 0 0 0.5rem; }
.card h2 a { color: var(--text); }
.card h2 a:hover { color: var(--accent); }

.desc { color: var(--muted); font-size: 0.9rem; margin: 0.5rem 0; }
.price { color: var(--ok); font-weight: 600; }
.price.big { font-size: 1.4rem; }
.sku { color: var(--muted); font-size: 0.8rem; font-weight: 400; }

/* Buttons */
.btn, button.btn {
  display: inline-block;
  padding: 0.5rem 1.1rem;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--bg-card);
  color: var(--text);
  font-size: 0.95rem;
  cursor: pointer;
  font-family: inherit;
}
.btn-primary {
  background: var(--accent);
  border-color: var(--accent);
  color: #0a0e12;
  font-weight: 600;
}
.btn-primary:hover { background: #5aadff; border-color: #5aadff; }
.btn-ghost { background: transparent; color: var(--muted); }

.inline-form { margin-top: 0.75rem; }

/* Forms */
.form-card, .search-form {
  max-width: 420px;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
  margin: 1.5rem 0;
}
.form-card label, .search-form label { font-size: 0.85rem; color: var(--muted); }
.form-card input, .form-card textarea, .search-form input, .form-inline input {
  padding: 0.55rem 0.7rem;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: #121820;
  color: var(--text);
  font-family: inherit;
  font-size: 1rem;
}
.search-form { flex-direction: row; flex-wrap: wrap; align-items: flex-end; max-width: 100%; }
.search-form #q { flex: 1; min-width: 200px; }
.form-inline { display: flex; flex-wrap: wrap; gap: 0.75rem; align-items: flex-end; margin: 1rem 0; }

/* Alerts */
.alert { padding: 0.75rem 1rem; border-radius: var(--radius); margin: 1rem 0; }
.alert-warn { background: #2d2618; border: 1px solid #5c4a1a; color: #e8c96a; }
.alert-err { background: #2a1818; border: 1px solid #5a2a2a; color: #f0a0a8; }
.alert-ok { background: #15261c; border: 1px solid #1f5a3a; color: #8fd4a6; }
.search-echo { color: var(--accent); }

/* Tables */
.data-table, .log-table { width: 100%; border-collapse: collapse; font-size: 0.9rem; margin: 1rem 0; }
.data-table th, .data-table td, .log-table th, .log-table td {
  border: 1px solid var(--border);
  padding: 0.5rem 0.65rem;
  text-align: left;
  vertical-align: top;
  word-break: break-word;
}
.data-table th, .log-table th { background: #121820; color: var(--muted); }
.table-wrap { overflow-x: auto; }
.qty { width: 4rem; }
.total { font-size: 1.1rem; margin-top: 0.5rem; }
.actions { margin-top: 0.5rem; }

/* Product detail */
.product-detail { max-width: 640px; }
.prose { color: var(--muted); }

/* Def list */
.def-list { display: grid; grid-template-columns: auto 1fr; gap: 0.35rem 1.25rem; margin: 1rem 0; }
.def-list dt { color: var(--muted); }
.def-list dd { margin: 0; }

/* Stats */
.stat-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(140px, 1fr)); gap: 1rem; margin: 1.5rem 0; }
.stat { text-align: center; }
.stat .n { display: block; font-size: 1.8rem; font-weight: 700; color: var(--accent); }
.stat span:last-child { color: var(--muted); font-size: 0.85rem; }

.link-list { line-height: 1.8; }
.feedback-list { display: flex; flex-direction: column; gap: 0.75rem; margin-top: 1rem; }
.feedback-item .meta { font-size: 0.9rem; color: var(--muted); }
.fb-body { margin-top: 0.4rem; }

.file-list { list-style: none; padding: 0; }
.file-list li { padding: 0.35rem 0; border-bottom: 1px solid var(--border); }

.file-pre {
  background: #121820;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1rem;
  overflow: auto;
  max-height: 50vh;
  font-size: 0.88rem;
}

/* Footer */
.site-footer {
  border-top: 1px solid var(--border);
  padding: 1.5rem 0;
  margin-top: 2rem;
  font-size: 0.85rem;
  color: var(--muted);
  text-align: center;
}

@media (max-width: 600px) {
  .nav { width: 100%; flex-direction: column; align-items: flex-start; }
  .def-list { grid-template-columns: 1fr; }
}