:root {
  --bg: #f5f6f8;
  --surface: #ffffff;
  --border: #e2e4e9;
  --text: #14151a;
  --text-muted: #6b6f7b;
  --accent: #4839d1;
  --accent-hover: #392eb0;
  --danger: #c8402c;
  --success: #1c8a5a;
  --radius: 8px;
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Inter, Roboto, sans-serif;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  font-size: 15px;
  line-height: 1.5;
}

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

.shell { display: flex; min-height: 100vh; }

.sidebar {
  width: 220px;
  flex-shrink: 0;
  background: var(--surface);
  border-right: 1px solid var(--border);
  padding: 24px 16px;
  position: sticky;
  top: 0;
  height: 100vh;
}

.sidebar .brand {
  font-weight: 700;
  font-size: 18px;
  letter-spacing: -0.02em;
  margin-bottom: 28px;
  display: block;
  color: var(--text);
}

.sidebar nav a {
  display: block;
  padding: 9px 12px;
  border-radius: var(--radius);
  color: var(--text-muted);
  font-size: 14px;
  font-weight: 500;
  margin-bottom: 2px;
}

.sidebar nav a:hover { background: var(--bg); text-decoration: none; color: var(--text); }
.sidebar nav a.active { background: var(--accent); color: #fff; }

.main { flex: 1; padding: 32px 40px; max-width: 1100px; }

.page-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 24px;
  gap: 16px;
  flex-wrap: wrap;
}

.page-header h1 { font-size: 22px; margin: 0; letter-spacing: -0.01em; }
.page-header p { color: var(--text-muted); margin: 4px 0 0; font-size: 14px; }

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 20px;
  margin-bottom: 20px;
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 14px;
  margin-bottom: 28px;
}

.stat { background: var(--surface); border: 1px solid var(--border); border-radius: 12px; padding: 18px; }
.stat .value { font-size: 28px; font-weight: 700; letter-spacing: -0.02em; }
.stat .label { color: var(--text-muted); font-size: 13px; margin-top: 4px; }

table { width: 100%; border-collapse: collapse; font-size: 14px; }
th, td { text-align: left; padding: 10px 12px; border-bottom: 1px solid var(--border); }
th { color: var(--text-muted); font-weight: 600; font-size: 12px; text-transform: uppercase; letter-spacing: 0.04em; }
tr:last-child td { border-bottom: none; }

.badge {
  display: inline-block;
  padding: 3px 9px;
  border-radius: 100px;
  font-size: 12px;
  font-weight: 600;
}
.badge.published { background: #e3f6ec; color: var(--success); }
.badge.draft { background: #f0f1f4; color: var(--text-muted); }
.badge.featured { background: #efe9ff; color: var(--accent); }

.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 9px 16px;
  border-radius: var(--radius);
  border: 1px solid transparent;
  background: var(--accent);
  color: #fff;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  font-family: inherit;
}
.btn:hover { background: var(--accent-hover); text-decoration: none; }
.btn.secondary { background: var(--surface); border-color: var(--border); color: var(--text); }
.btn.secondary:hover { background: var(--bg); }
.btn.danger { background: var(--danger); }
.btn.small { padding: 5px 10px; font-size: 13px; }

.actions { display: flex; gap: 8px; flex-wrap: wrap; }

form.stack { display: flex; flex-direction: column; gap: 16px; }
.field { display: flex; flex-direction: column; gap: 6px; }
.field label { font-size: 13px; font-weight: 600; }
.field .hint { font-size: 12px; color: var(--text-muted); }
.field-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }

input[type=text], input[type=email], input[type=password], input[type=number],
input[type=url], textarea, select {
  font-family: inherit;
  font-size: 14px;
  padding: 9px 11px;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: var(--bg);
  color: var(--text);
  width: 100%;
}
input:focus, textarea:focus, select:focus {
  outline: 2px solid var(--accent);
  outline-offset: 1px;
  background: var(--surface);
}
textarea { resize: vertical; min-height: 90px; }

.checkbox-row { display: flex; align-items: center; gap: 8px; }
.checkbox-row input { width: auto; }

.alert { padding: 12px 14px; border-radius: var(--radius); font-size: 14px; margin-bottom: 18px; }
.alert.error { background: #fdeceA; color: var(--danger); border: 1px solid #f3c3ba; }
.alert.success { background: #e3f6ec; color: var(--success); border: 1px solid #b9e6cd; }

.login-shell {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg);
}
.login-card { width: 100%; max-width: 360px; padding: 32px; }
.login-card h1 { font-size: 20px; margin: 0 0 4px; }
.login-card p { color: var(--text-muted); font-size: 14px; margin: 0 0 24px; }

.empty-state { text-align: center; padding: 48px 20px; color: var(--text-muted); }

.gallery-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(120px, 1fr)); gap: 10px; }
.gallery-grid img { width: 100%; aspect-ratio: 4/3; object-fit: cover; border-radius: 8px; border: 1px solid var(--border); }

@media (max-width: 760px) {
  .shell { flex-direction: column; }
  .sidebar { width: 100%; height: auto; position: static; padding: 16px; }
  .sidebar nav { display: flex; overflow-x: auto; gap: 4px; }
  .main { padding: 20px; }
  .field-row { grid-template-columns: 1fr; }
}