/* ===== Panel Admin CSS ===== */
:root {
    --primary: #2c6e9e;
    --primary-dark: #1d4f73;
    --accent: #f39c12;
    --dark: #1a1a2e;
    --light: #f4f6f9;
    --text: #333;
    --success: #2ecc71;
    --success-dark: #27ae60;
    --danger: #e74c3c;
    --danger-dark: #c0392b;
    --border: #e3e8ef;
    --sidebar-w: 250px;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

body {
    font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
    color: var(--text);
    background: var(--light);
    line-height: 1.6;
}

/* ===== Login ===== */
.login-body {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--primary-dark), var(--primary));
    padding: 20px;
}
.login-box {
    background: #fff;
    width: 100%;
    max-width: 400px;
    border-radius: 12px;
    padding: 35px;
    box-shadow: 0 15px 50px rgba(0,0,0,.25);
}
.login-logo { text-align: center; margin-bottom: 20px; }
.login-logo img { height: 70px; margin-bottom: 10px; }
.login-logo h1 { font-size: 1.3rem; color: var(--primary-dark); }
.login-logo p { color: #888; font-size: .9rem; }
.login-hint { text-align: center; margin-top: 15px; font-size: .8rem; color: #aaa; }
.login-hint code { background: #f0f0f0; padding: 2px 6px; border-radius: 4px; }

/* ===== Layout Admin ===== */
.admin-body { min-height: 100vh; }
.admin-sidebar {
    position: fixed;
    left: 0;
    top: 0;
    bottom: 0;
    width: var(--sidebar-w);
    background: var(--dark);
    color: #e0e0e0;
    display: flex;
    flex-direction: column;
    z-index: 1000;
    transition: transform .3s ease;
}
.admin-brand {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 20px;
    border-bottom: 1px solid rgba(255,255,255,.08);
}
.admin-brand img { height: 42px; border-radius: 6px; background: #fff; padding: 3px; }
.admin-brand strong { display: block; color: #fff; font-size: .95rem; }
.admin-brand span { font-size: .75rem; color: #aaa; }

.admin-nav { flex: 1; padding: 15px 0; overflow-y: auto; }
.admin-nav .nav-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 13px 20px;
    color: #ccc;
    text-decoration: none;
    font-size: .92rem;
    transition: .15s;
    border-left: 3px solid transparent;
}
.admin-nav .nav-item i { width: 20px; text-align: center; }
.admin-nav .nav-item:hover { background: rgba(255,255,255,.06); color: #fff; }
.admin-nav .nav-item.active {
    background: rgba(44,110,158,.35);
    color: #fff;
    border-left-color: var(--accent);
}

.admin-sidebar-footer { border-top: 1px solid rgba(255,255,255,.08); padding: 12px 0; }
.admin-sidebar-footer a {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 11px 20px;
    color: #bbb;
    text-decoration: none;
    font-size: .88rem;
}
.admin-sidebar-footer a i { width: 20px; text-align: center; }
.admin-sidebar-footer a:hover { color: #fff; background: rgba(255,255,255,.05); }
.admin-sidebar-footer a.logout:hover { color: var(--danger); }

.admin-main {
    margin-left: var(--sidebar-w);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}
.admin-topbar {
    height: 60px;
    background: #fff;
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 25px;
    position: sticky;
    top: 0;
    z-index: 900;
}
.admin-menu-toggle {
    display: none;
    background: none;
    border: none;
    font-size: 1.3rem;
    color: var(--primary-dark);
    cursor: pointer;
}
.admin-user { color: #666; font-size: .9rem; }
.admin-user i { color: var(--primary); margin-right: 6px; }

.admin-content { padding: 25px; flex: 1; }

/* ===== Page titles ===== */
.page-title { font-size: 1.5rem; color: var(--primary-dark); }
.page-sub { color: #888; margin-bottom: 20px; }
.page-header-row {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 15px;
    flex-wrap: wrap;
}

/* ===== Stat cards ===== */
.stat-cards {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
    margin-bottom: 25px;
}
.stat-card {
    background: #fff;
    border-radius: 10px;
    padding: 20px;
    display: flex;
    align-items: center;
    gap: 15px;
    box-shadow: 0 3px 12px rgba(0,0,0,.05);
    border-left: 4px solid var(--primary);
}
.stat-card i { font-size: 2.2rem; color: var(--primary); }
.stat-card .stat-value { display: block; font-size: 1.7rem; font-weight: 700; color: var(--primary-dark); }
.stat-card .stat-label { color: #888; font-size: .85rem; }

/* ===== Panel ===== */
.panel {
    background: #fff;
    border-radius: 10px;
    box-shadow: 0 3px 12px rgba(0,0,0,.05);
    margin-bottom: 25px;
    overflow: hidden;
}
.panel-header {
    padding: 15px 20px;
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: space-between;
}
.panel-header h2 { font-size: 1rem; color: var(--primary-dark); }
.panel-header h2 i { color: var(--primary); margin-right: 8px; }

/* ===== Table ===== */
.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; }
th, td { padding: 12px 15px; text-align: left; border-bottom: 1px solid var(--border); font-size: .9rem; }
th { background: var(--primary); color: #fff; font-weight: 600; white-space: nowrap; }
tbody tr:hover { background: #f8fafc; }
.empty { text-align: center; padding: 30px; color: #999; }
.badge {
    background: #eef3f8;
    color: var(--primary-dark);
    padding: 3px 10px;
    border-radius: 20px;
    font-size: .78rem;
}

/* ===== Forms ===== */
.admin-form { padding: 20px; }
.form-narrow { max-width: 480px; }
.form-group { margin-bottom: 16px; }
.form-group label { display: block; margin-bottom: 6px; font-size: .88rem; font-weight: 600; color: #555; }
.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 10px 12px;
    border: 1px solid var(--border);
    border-radius: 6px;
    font-size: .92rem;
    font-family: inherit;
    transition: .15s;
}
.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(44,110,158,.12);
}
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 15px; }
.form-actions { display: flex; gap: 10px; margin-top: 5px; }

/* ===== Buttons ===== */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 7px;
    padding: 10px 18px;
    border: none;
    border-radius: 6px;
    font-size: .9rem;
    font-weight: 600;
    cursor: pointer;
    text-decoration: none;
    transition: .15s;
    font-family: inherit;
}
.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-dark); }
.btn-secondary { background: #eef3f8; color: var(--primary-dark); }
.btn-secondary:hover { background: #dfe8f0; }
.btn-danger { background: var(--danger); color: #fff; }
.btn-danger:hover { background: var(--danger-dark); }
.btn-sm { padding: 6px 10px; font-size: .8rem; }
.btn-block { width: 100%; justify-content: center; }

/* ===== Alerts ===== */
.alert {
    padding: 12px 16px;
    border-radius: 6px;
    margin-bottom: 20px;
    font-size: .9rem;
}
.alert-success { background: #eafaf1; color: var(--success-dark); border: 1px solid #b7ebcd; }
.alert-danger { background: #fdecea; color: var(--danger-dark); border: 1px solid #f5b7b1; }

/* ===== Responsive ===== */
@media (max-width: 900px) {
    .admin-sidebar { transform: translateX(-100%); }
    .admin-sidebar.open { transform: translateX(0); }
    .admin-main { margin-left: 0; }
    .admin-menu-toggle { display: block; }
    .stat-cards { grid-template-columns: 1fr; }
    .form-row { grid-template-columns: 1fr; }
}