:root {
    --bg: #eef1f8;
    --bg-gradient: radial-gradient(circle at 20% 20%, #dbe4ff 0%, #eef1f8 45%), radial-gradient(circle at 80% 80%, #ffe8f3 0%, transparent 50%);
    --glass-bg: rgba(255, 255, 255, 0.55);
    --glass-border: rgba(255, 255, 255, 0.6);
    --text: #1c2333;
    --text-muted: #5b6478;
    --accent: #5c6bff;
    --accent-2: #8b5cf6;
    --success: #16a34a;
    --danger: #dc2626;
    --warning: #d97706;
    --shadow: 0 8px 32px rgba(31, 38, 135, 0.12);
    --sidebar-w: 250px;
}

[data-theme="dark"] {
    --bg: #0f1220;
    --bg-gradient: radial-gradient(circle at 20% 20%, #1c2140 0%, #0f1220 45%), radial-gradient(circle at 80% 80%, #241a35 0%, transparent 50%);
    --glass-bg: rgba(24, 27, 46, 0.55);
    --glass-border: rgba(255, 255, 255, 0.08);
    --text: #e9ecf7;
    --text-muted: #9aa2bd;
    --shadow: 0 8px 32px rgba(0, 0, 0, 0.45);
}

* { box-sizing: border-box; }

body {
    background: var(--bg-gradient), var(--bg);
    background-attachment: fixed;
    color: var(--text);
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    min-height: 100vh;
    transition: background 0.3s ease, color 0.3s ease;
}

.glass {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: 18px;
    box-shadow: var(--shadow);
    backdrop-filter: blur(18px) saturate(160%);
    -webkit-backdrop-filter: blur(18px) saturate(160%);
}

.text-muted-c { color: var(--text-muted) !important; }

/* ---------------- Sidebar ---------------- */
.sidebar {
    width: var(--sidebar-w);
    min-height: 100vh;
    padding: 24px 16px;
    position: fixed;
    top: 0; left: 0;
    margin: 12px;
    height: calc(100vh - 24px);
    display: flex;
    flex-direction: column;
    gap: 4px;
    z-index: 100;
}

.sidebar .brand {
    font-weight: 700;
    font-size: 1.15rem;
    margin-bottom: 24px;
    padding: 0 8px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.sidebar .nav-link {
    color: var(--text-muted);
    border-radius: 12px;
    padding: 10px 14px;
    font-size: 0.92rem;
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 10px;
    transition: all 0.15s ease;
}

.sidebar .nav-link:hover {
    background: rgba(92, 107, 255, 0.12);
    color: var(--text);
}

.sidebar .nav-link.active {
    background: linear-gradient(135deg, var(--accent), var(--accent-2));
    color: #fff;
}

.main-content {
    margin-left: calc(var(--sidebar-w) + 24px);
    padding: 24px 28px 60px;
}

@media (max-width: 900px) {
    .sidebar { position: static; width: 100%; height: auto; margin: 12px; }
    .main-content { margin-left: 0; padding: 16px; }
}

/* ---------------- Topbar ---------------- */
.topbar {
    padding: 14px 20px;
    margin-bottom: 22px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.theme-toggle {
    width: 40px; height: 40px;
    border-radius: 50%;
    display: flex; align-items: center; justify-content: center;
    cursor: pointer;
    border: 1px solid var(--glass-border);
    background: transparent;
    color: var(--text);
}

/* ---------------- Cards / stats ---------------- */
.stat-card {
    padding: 20px;
    transition: transform 0.15s ease;
}
.stat-card:hover { transform: translateY(-2px); }
.stat-card .value { font-size: 1.8rem; font-weight: 700; }
.stat-card .label { color: var(--text-muted); font-size: 0.85rem; }

/* ---------------- Buttons ---------------- */
.btn-glass {
    background: rgba(92, 107, 255, 0.12);
    border: 1px solid rgba(92, 107, 255, 0.25);
    color: var(--accent);
    border-radius: 10px;
    font-weight: 600;
}
.btn-glass:hover { background: rgba(92, 107, 255, 0.22); color: var(--accent); }

.btn-gradient {
    background: linear-gradient(135deg, var(--accent), var(--accent-2));
    border: none;
    color: #fff;
    border-radius: 10px;
    font-weight: 600;
}
.btn-gradient:hover { filter: brightness(1.08); color: #fff; }

/* ---------------- Table ---------------- */
.table-glass { color: var(--text); }
.table-glass thead th { color: var(--text-muted); font-weight: 600; font-size: 0.8rem; text-transform: uppercase; letter-spacing: 0.03em; border-bottom: 1px solid var(--glass-border); }
.table-glass td, .table-glass th { border-color: var(--glass-border); vertical-align: middle; }

.badge-status { border-radius: 8px; padding: 4px 10px; font-size: 0.75rem; font-weight: 600; }

/* ---------------- Login page ---------------- */
.login-wrapper { min-height: 100vh; display: flex; align-items: center; justify-content: center; }
.login-card { width: 100%; max-width: 380px; padding: 36px; }

.form-control, .form-select {
    background: rgba(255,255,255,0.5);
    border: 1px solid var(--glass-border);
    color: var(--text);
}
[data-theme="dark"] .form-control, [data-theme="dark"] .form-select {
    background: rgba(255,255,255,0.05);
    color: var(--text);
}
.form-control:focus, .form-select:focus {
    background: rgba(255,255,255,0.6);
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(92,107,255,0.15);
    color: var(--text);
}