*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
[hidden] { display: none !important; }

:root {
  --bg: #0a0a0f; --bg-2: #0f0f1a; --bg-card: #141420;
  --border: rgba(255,255,255,0.07);
  --accent: #7c3aed; --accent-light: #9d65f5;
  --text: #f0f0f8; --text-2: #a0a0c0; --text-3: #6060a0;
  --green: #10b981; --red: #ef4444;
  --font: 'Inter', system-ui, sans-serif;
  --radius: 10px;
}

body { font-family: var(--font); background: var(--bg); color: var(--text); display: flex; min-height: 100vh; -webkit-font-smoothing: antialiased; }

.logo-mark { width:30px;height:30px;border-radius:7px;background:linear-gradient(135deg,var(--accent),#06b6d4);display:flex;align-items:center;justify-content:center;font-size:.875rem;font-weight:900;color:#fff;flex-shrink:0; }
.logo-text { font-weight:800;font-size:1rem;color:var(--text); }
.nav-logo { display:flex;align-items:center;gap:10px; }

/* Login */
.login-wrap { width:100%;display:flex;align-items:center;justify-content:center;padding:24px; }
.login-card { background:var(--bg-card);border:1px solid var(--border);border-radius:16px;padding:40px;width:100%;max-width:380px;display:flex;flex-direction:column;gap:16px; }

/* Sidebar */
.sidebar { width:220px;flex-shrink:0;background:var(--bg-2);border-right:1px solid var(--border);display:flex;flex-direction:column;padding:24px 16px;gap:8px; }
.sidebar-brand { margin-bottom:24px;padding:0 8px; }
.sidebar-nav { display:flex;flex-direction:column;gap:4px;flex:1; }
.sidebar-link { display:flex;align-items:center;gap:10px;padding:10px 12px;border-radius:var(--radius);font-size:.9rem;font-weight:500;color:var(--text-2);text-decoration:none;transition:all .15s; }
.sidebar-link:hover,.sidebar-link.active { background:rgba(124,58,237,.12);color:var(--text);border:1px solid rgba(124,58,237,.2); }
.sidebar-link { border:1px solid transparent; }
.sidebar-exit { margin-top:auto;color:var(--text-3);font-size:.8125rem; }

/* Main */
.admin-main { flex:1;padding:40px;overflow-y:auto;display:none; }
#admin-app { display:none;width:100%; }
#admin-app[style*="display: block"],
#admin-app:not([hidden]) { display:flex !important; }

.panel { display:none;flex-direction:column;gap:24px;max-width:900px; }
.panel.active { display:flex; }
.panel-title { font-size:1.5rem;font-weight:800;color:var(--text);margin-bottom:8px; }

/* Forms */
.input, textarea, select {
  width:100%;background:var(--bg-card);border:1px solid var(--border);
  border-radius:var(--radius);padding:11px 14px;color:var(--text);
  font-family:var(--font);font-size:.9375rem;transition:border-color .15s;
  outline:none;
}
.input:focus, textarea:focus { border-color:var(--accent); }
textarea { resize:vertical;min-height:80px; }

.settings-grid { display:grid;grid-template-columns:1fr 1fr;gap:16px; }
@media(max-width:640px){ .settings-grid{grid-template-columns:1fr;} }

.field { display:flex;flex-direction:column;gap:6px; }
.field label { font-size:.8125rem;font-weight:600;color:var(--text-3);text-transform:uppercase;letter-spacing:.08em; }
.field.full { grid-column:1/-1; }

.btn { display:inline-flex;align-items:center;gap:8px;font-family:var(--font);font-weight:600;font-size:.9375rem;border-radius:var(--radius);padding:11px 22px;border:none;cursor:pointer;transition:all .2s;text-decoration:none; }
.btn-primary { background:linear-gradient(135deg,var(--accent),#5b21b6);color:#fff;box-shadow:0 0 20px rgba(124,58,237,.3); }
.btn-primary:hover { transform:translateY(-1px);box-shadow:0 4px 24px rgba(124,58,237,.4); }
.btn-danger { background:rgba(239,68,68,.12);color:var(--red);border:1px solid rgba(239,68,68,.2); }
.btn-danger:hover { background:rgba(239,68,68,.2); }
.btn-sm { padding:7px 14px;font-size:.8125rem; }

/* Admin list */
.admin-list { display:flex;flex-direction:column;gap:12px; }
.admin-list-item { background:var(--bg-card);border:1px solid var(--border);border-radius:12px;padding:20px 24px;display:flex;align-items:center;justify-content:space-between;gap:16px; }
.admin-item-info { flex:1; }
.admin-item-title { font-weight:600;color:var(--text);margin-bottom:4px; }
.admin-item-sub { font-size:.875rem;color:var(--text-3); }
.admin-item-actions { display:flex;gap:8px; }

.success-msg { color:var(--green);font-size:.9rem;font-weight:600; }
.error-msg { color:var(--red);font-size:.875rem;font-weight:600; }