:root {
    --gold: #D4AF37;
    --gold-dark: #B8860B;
    --white: #FFFFFF;
    --charcoal: #333333;
    --light-gray: #F5F5F5;
    --medium-gray: #E0E0E0;
    --dark-gray: #4A4A4A;
    --danger: #E74C3C;
    --success: #2ECC71;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Inter', sans-serif;
}

body {
    background-color: var(--light-gray);
    color: var(--charcoal);
}

/* App Container */
.app-container {
    display: flex;
    min-height: 100vh;
}

/* Sidebar */
.sidebar {
    width: 260px;
    background: var(--charcoal);
    color: var(--white);
    position: fixed;
    height: 100%;
    left: 0;
    top: 0;
    transition: transform 0.3s ease;
    z-index: 1000;
    transform: translateX(-100%);
}

.sidebar-toggle {
    display: none;
}

.sidebar-toggle:checked ~ .sidebar {
    transform: translateX(0);
}

.sidebar-header {
    padding: 1.5rem;
    border-bottom: 1px solid rgba(255,255,255,0.1);
    text-align: center;
}

.sidebar-header h2 {
    color: var(--gold);
    font-weight: 600;
}

.sidebar-header h2 span {
    font-weight: 300;
    color: var(--white);
}

.sidebar-nav {
    list-style: none;
    padding: 1rem 0;
}

.sidebar-nav li a {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 24px;
    color: var(--white);
    text-decoration: none;
    transition: all 0.3s;
}

.sidebar-nav li a i {
    width: 24px;
    text-align: center;
    color: var(--gold);
}

.sidebar-nav li a:hover {
    background: rgba(212, 175, 55, 0.1);
    color: var(--gold);
}

/* Main Content */
.main-content {
    flex: 1;
    margin-left: 0;
    transition: margin 0.3s;
    width: 100%;
}

.top-bar {
    background: var(--white);
    padding: 1rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    position: sticky;
    top: 0;
    z-index: 999;
}

.menu-btn, .close-btn {
    cursor: pointer;
    font-size: 1.5rem;
    color: var(--gold);
}

.user-info {
    font-weight: 500;
    color: var(--charcoal);
}

.content {
    padding: 1rem;
}

/* Cards */
.card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1rem;
    margin-bottom: 2rem;
}

.card {
    background: var(--white);
    border-radius: 12px;
    padding: 1.5rem;
    box-shadow: 0 4px 6px rgba(0,0,0,0.05);
    border-left: 4px solid var(--gold);
}

.card h3 {
    font-size: 1rem;
    color: var(--dark-gray);
    margin-bottom: 0.5rem;
}

.card .value {
    font-size: 1rem;
    font-weight: 700;
    color: var(--charcoal);
}

/* Forms */
.form-container {
    background: var(--white);
    border-radius: 12px;
    padding: 1.5rem;
    box-shadow: 0 2px 4px rgba(0,0,0,0.05);
    margin-bottom: 1.5rem;
}

.form-group {
    margin-bottom: 1rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: var(--charcoal);
}

.form-group input, .form-group select, .form-group textarea {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid var(--medium-gray);
    border-radius: 8px;
    font-size: 1rem;
    transition: border 0.3s;
}

.form-group input:focus, .form-group select:focus {
    outline: none;
    border-color: var(--gold);
}

.btn {
    display: inline-block;
    background: var(--gold);
    color: var(--charcoal);
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: 8px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
    text-decoration: none;
    font-size: 1rem;
}

.btn:hover {
    background: var(--gold-dark);
    color: var(--white);
}

.btn-danger {
    background: var(--danger);
    color: white;
}

.btn-success {
    background: var(--success);
    color: white;
}

/* Tables */
.table-responsive {
    overflow-x: auto;
}

.data-table {
    width: 100%;
    background: var(--white);
    border-radius: 12px;
    border-collapse: collapse;
    overflow: hidden;
    box-shadow: 0 2px 4px rgba(0,0,0,0.05);
}

.data-table th, .data-table td {
    padding: 1rem;
    text-align: left;
    border-bottom: 1px solid var(--medium-gray);
}

.data-table th {
    background: var(--gold);
    color: var(--charcoal);
    font-weight: 600;
}

.data-table tr:hover {
    background: var(--light-gray);
}

/* Mobile Bottom Bar (visible only on mobile) */
@media (min-width: 768px) {
    .sidebar {
        transform: translateX(0);
        position: relative;
        height: auto;
    }
    .main-content {
        margin-left: 0;
    }
    .menu-btn {
        display: none;
    }
    .close-btn {
        display: none;
    }
}

@media (max-width: 767px) {
    .bottom-nav {
        position: fixed;
        bottom: 0;
        left: 0;
        right: 0;
        background: var(--white);
        display: flex;
        justify-content: space-around;
        padding: 0.5rem;
        box-shadow: 0 -2px 10px rgba(0,0,0,0.1);
        z-index: 1000;
    }
    .bottom-nav a {
        text-align: center;
        color: var(--dark-gray);
        text-decoration: none;
        font-size: 0.8rem;
    }
    .bottom-nav a i {
        font-size: 1.5rem;
        display: block;
        margin-bottom: 0.25rem;
    }
    .bottom-nav a.active {
        color: var(--gold);
    }
    .content {
        padding-bottom: 70px;
    }
}