/* Modern Dashboard Theme Styles */
:root {
    --bg-primary: #f4f6f9;
    --bg-surface: #ffffff;
    --bg-sidebar: #1e293b;
    --text-primary: #1e293b;
    --text-secondary: #64748b;
    --text-sidebar: #94a3b8;
    --text-sidebar-active: #ffffff;
    --accent-color: #2563eb;
    --accent-hover: #1d4ed8;
    --card-bg: #ffffff;
    --border-color: #e2e8f0;
    --table-hover: #f8fafc;
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
}

[data-theme="dark"] {
    --bg-primary: #0f172a;
    --bg-surface: #1e293b;
    --bg-sidebar: #090d16;
    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --text-sidebar: #64748b;
    --text-sidebar-active: #38bdf8;
    --accent-color: #38bdf8;
    --accent-hover: #0284c7;
    --card-bg: #1e293b;
    --border-color: #334155;
    --table-hover: #334155;
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.4);
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    transition: background-color 0.2s, color 0.2s;
}

body {
    background-color: var(--bg-primary);
    color: var(--text-primary);
    display: flex;
    min-height: 100vh;
}

.sidebar {
    width: 250px;
    background-color: var(--bg-sidebar);
    color: var(--text-sidebar);
    display: flex;
    flex-direction: column;
    position: fixed;
    height: 100vh;
    z-index: 100;
}

.sidebar-brand {
    padding: 20px;
    font-size: 1.25rem;
    font-weight: bold;
    color: #ffffff;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    display: flex;
    align-items: center;
    gap: 10px;
}

.sidebar-menu {
    list-style: none;
    padding: 15px 0;
    flex-grow: 1;
}

.sidebar-menu li a {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 20px;
    color: var(--text-sidebar);
    text-decoration: none;
    font-size: 0.95rem;
}

.sidebar-menu li a:hover, .sidebar-menu li.active a {
    background-color: rgba(255, 255, 255, 0.08);
    color: var(--text-sidebar-active);
    border-left: 4px solid var(--accent-color);
}

.main-wrapper {
    margin-left: 250px;
    flex-grow: 1;
    display: flex;
    flex-direction: column;
    min-width: 0;
}

.top-nav {
    height: 60px;
    background-color: var(--bg-surface);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 25px;
    position: sticky;
    top: 0;
    z-index: 90;
}

.top-nav .user-info {
    display: flex;
    align-items: center;
    gap: 15px;
}

.theme-toggle {
    background: none;
    border: none;
    cursor: pointer;
    font-size: 1.2rem;
    color: var(--text-primary);
}

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

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 20px;
    margin-bottom: 25px;
}

.stat-card {
    background-color: var(--card-bg);
    padding: 20px;
    border-radius: 10px;
    box-shadow: var(--shadow);
    border: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.stat-card .val {
    font-size: 1.8rem;
    font-weight: bold;
    margin-top: 5px;
}

.stat-card .lbl {
    color: var(--text-secondary);
    font-size: 0.85rem;
    text-transform: uppercase;
}

.card {
    background-color: var(--card-bg);
    border-radius: 10px;
    padding: 20px;
    box-shadow: var(--shadow);
    border: 1px solid var(--border-color);
    margin-bottom: 25px;
}

.card-title {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 15px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.table-responsive {
    width: 100%;
    overflow-x: auto;
}

table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 10px;
}

th, td {
    padding: 12px 15px;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

th {
    background-color: rgba(0, 0, 0, 0.02);
    color: var(--text-secondary);
    font-weight: 600;
}

tr:hover {
    background-color: var(--table-hover);
}

.btn {
    display: inline-block;
    padding: 8px 16px;
    border-radius: 6px;
    border: none;
    cursor: pointer;
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 500;
}

.btn-primary { background-color: var(--accent-color); color: #fff; }
.btn-primary:hover { background-color: var(--accent-hover); }
.btn-danger { background-color: #ef4444; color: #fff; }
.btn-danger:hover { background-color: #dc2626; }
.btn-success { background-color: #10b981; color: #fff; }
.btn-sm { padding: 4px 8px; font-size: 0.8rem; }

.form-group {
    margin-bottom: 15px;
}

.form-group label {
    display: block;
    margin-bottom: 5px;
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.form-control {
    width: 100%;
    padding: 10px;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    background-color: var(--bg-surface);
    color: var(--text-primary);
}

.form-control:focus {
    outline: 2px solid var(--accent-color);
}

.badge {
    padding: 4px 8px;
    border-radius: 12px;
    font-size: 0.75rem;
    font-weight: 600;
}

.badge-success { background: #dcfce7; color: #166534; }
.badge-warning { background: #fef9c3; color: #854d0e; }
.badge-danger { background: #fee2e2; color: #991b1b; }

.alert {
    padding: 12px;
    border-radius: 6px;
    margin-bottom: 15px;
}

.alert-danger { background-color: #fee2e2; color: #991b1b; border: 1px solid #fca5a5; }
.alert-success { background-color: #dcfce7; color: #166534; border: 1px solid #86efac; }

/* Login Container */
.login-body {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100vw;
    height: 100vh;
    background-color: var(--bg-primary);
}

.login-card {
    width: 380px;
    padding: 30px;
    background-color: var(--card-bg);
    border-radius: 10px;
    box-shadow: var(--shadow);
    border: 1px solid var(--border-color);
}