:root[data-theme="dark"] {
  --bg: #000102;
  --card: #15161a;
  --border: #2a2b30;
  --text: #F7F7F7;
  --muted: #9a9a9a;
  --accent: #C9A646;
  --accent-hover: #b6923a;
  --input-bg: #0a0b0e;
}
:root[data-theme="light"] {
  --bg: #F7F7F7;
  --card: #ffffff;
  --border: #e5e5e5;
  --text: #000102;
  --muted: #6b6b6b;
  --accent: #C9A646;
  --accent-hover: #b6923a;
  --input-bg: #F7F7F7;
}

body { font-family: system-ui, -apple-system, sans-serif; background: var(--bg); color: var(--text); padding: 40px; margin: 0; transition: background 0.2s, color 0.2s; }
.container { max-width: 950px; margin: 0 auto; }
.header { border-bottom: 1px solid var(--border); padding-bottom: 20px; margin-bottom: 30px; display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 15px; }
.header h1 { margin: 0; font-size: 22px; color: var(--text); letter-spacing: -0.5px; }
.header h1 span { color: var(--accent); }
.nav-actions { display: flex; gap: 12px; align-items: center; flex-wrap: wrap; }
.tool-link, .admin-link { text-decoration: none; font-size: 13px; background: var(--card); padding: 8px 14px; border-radius: 6px; border: 1px solid var(--border); font-weight: 500; transition: all 0.2s; }
.tool-link { color: var(--muted); }
.admin-link { color: var(--accent); font-weight: 600; }
.tool-link:hover, .admin-link:hover { background: var(--border); }
.card { background: var(--card); border: 1px solid var(--border); border-radius: 12px; padding: 30px; box-shadow: 0 4px 6px -1px rgb(0 0 0 / 0.1); }
.grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; margin-bottom: 25px; }
@media (max-width: 700px) { .grid { grid-template-columns: 1fr; } }
.form-group { display: flex; flex-direction: column; }
label { font-size: 11px; font-weight: 700; text-transform: uppercase; margin-bottom: 8px; color: var(--muted); letter-spacing: 0.5px; }
input, select { padding: 12px; border: 1px solid var(--border); border-radius: 8px; font-size: 15px; background: var(--input-bg); color: var(--text); transition: border-color 0.2s; }
input:focus, select:focus { border-color: var(--accent); outline: none; }
.btn-submit { background: var(--accent); color: #000102; border: none; padding: 14px; border-radius: 8px; font-size: 16px; font-weight: 600; cursor: pointer; width: 100%; transition: background 0.2s; margin-top: 10px; }
.btn-submit:hover { background: var(--accent-hover); }
.alert-error { background: #fef2f2; border-left: 5px solid #ef4444; padding: 15px; border-radius: 6px; color: #991b1b; margin-bottom: 25px; font-size: 14px; }
.helper-text { color: var(--muted); font-size: 11px; margin-top: 4px; }

.theme-toggle { background: var(--card); border: 1px solid var(--border); color: var(--text); padding: 8px 12px; border-radius: 6px; cursor: pointer; font-size: 13px; font-weight: 600; }
.theme-toggle:hover { background: var(--border); }

/* Admin-specific */
.admin-container { max-width: 1400px; margin: 0 auto; }
.grid-form { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 20px; }
table { width: 100%; border-collapse: collapse; margin-top: 20px; text-align: left; }
th, td { padding: 12px 15px; border-bottom: 1px solid var(--border); font-size: 13px; }
th { background: var(--bg); color: var(--muted); font-size: 11px; }
.user-badge { font-size: 12px; background: var(--card); border: 1px solid var(--border); padding: 6px 12px; border-radius: 20px; color: var(--muted); font-weight: 600; margin-right: 15px; }
.logout-btn { color: #f87171; text-decoration: none; font-size: 13px; font-weight: 600; }
.delete-btn { color: #f87171; font-weight: 600; text-decoration: none; font-size: 12px; }
.delete-btn:hover { text-decoration: underline; }
.edit-btn { color: var(--accent); font-weight: 600; text-decoration: none; font-size: 12px; margin-right: 12px; }
.inline-form { display: flex; gap: 12px; align-items: flex-end; }
.tag-list { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 18px; }
.tag { background: var(--bg); border: 1px solid var(--border); border-radius: 20px; padding: 6px 14px; font-size: 13px; display: flex; align-items: center; gap: 10px; }
.two-col { display: grid; grid-template-columns: 1fr 1fr; gap: 30px; }
@media (max-width: 800px) { .two-col { grid-template-columns: 1fr; } }
.notice-success { background: #10b981; color: #fff; padding: 15px; border-radius: 6px; margin-bottom: 20px; font-weight: 600; }
.notice-error { background: #ef4444; color: #fff; padding: 15px; border-radius: 6px; margin-bottom: 20px; font-weight: 600; }

/* Logo swap */
.logo { height: 40px; width: auto; max-width: 160px; display: block; }
.logo-black { display: block; }
.logo-white { display: none; }
:root[data-theme="dark"] .logo-white { display: block; }
:root[data-theme="dark"] .logo-black { display: none; }

@media (max-width: 500px) {
  .logo { height: 32px; max-width: 130px; }
}