:root {
    --primary: #0A192F;
    --primary-light: #172a45;
    --accent: #d4af37;
    --text-dark: #333333;
    --text-light: #ffffff;
    --bg-light: #f4f6f8;
    --white: #ffffff;
    --border: #e2e8f0;
    --danger: #ef4444;
    --success: #10b981;
}

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

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--bg-light);
    color: var(--text-dark);
}

.text-center { text-align: center; }
.mb-3 { margin-bottom: 1rem; }
.mt-3 { margin-top: 1rem; }
.mt-4 { margin-top: 1.5rem; }
.flex-between { display: flex; justify-content: space-between; align-items: center; }

/* Buttons */
.btn {
    padding: 10px 20px;
    border-radius: 5px;
    border: none;
    cursor: pointer;
    font-weight: 500;
    transition: all 0.3s;
}

.btn-primary {
    background-color: var(--primary);
    color: var(--text-light);
}

.btn-primary:hover {
    background-color: var(--primary-light);
}

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

.btn-block {
    display: block;
    width: 100%;
}

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

.form-group label {
    display: block;
    margin-bottom: 5px;
    font-weight: 500;
    font-size: 0.9rem;
}

.form-group input, .form-group textarea {
    width: 100%;
    padding: 10px;
    border: 1px solid var(--border);
    border-radius: 5px;
    font-family: inherit;
}

/* Login Screen */
.login-container {
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
}

.login-box {
    background: var(--white);
    padding: 40px;
    border-radius: 10px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
    width: 100%;
    max-width: 400px;
}

.login-box h2 {
    color: var(--primary);
    margin-bottom: 5px;
}

.login-box p {
    color: #666;
    margin-bottom: 20px;
}

.error-msg {
    color: var(--danger);
    margin-top: 10px;
    text-align: center;
    font-size: 0.9rem;
}

/* Dashboard Layout */
.admin-layout {
    display: flex;
    min-height: 100vh;
}

.sidebar {
    width: 250px;
    background-color: var(--primary);
    color: var(--text-light);
    flex-shrink: 0;
}

.sidebar-header {
    padding: 20px;
    background-color: var(--primary-light);
    border-bottom: 1px solid rgba(255,255,255,0.1);
}

.sidebar-menu {
    list-style: none;
    padding: 20px 0;
}

.sidebar-menu li {
    padding: 15px 20px;
    cursor: pointer;
    transition: all 0.3s;
    display: flex;
    align-items: center;
    gap: 10px;
}

.sidebar-menu li:hover, .sidebar-menu li.active {
    background-color: var(--primary-light);
    border-left: 4px solid var(--accent);
}

.main-content {
    flex-grow: 1;
    padding: 30px;
    overflow-y: auto;
}

.header {
    margin-bottom: 30px;
}

.header h1 {
    font-size: 1.8rem;
    color: var(--primary);
}

.header p {
    color: #666;
}

.card {
    background: var(--white);
    border-radius: 8px;
    padding: 20px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.05);
}

/* Stats */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: 20px;
}

.stat-card {
    background: var(--white);
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.05);
    display: flex;
    align-items: center;
    gap: 20px;
}

.stat-icon {
    width: 50px;
    height: 50px;
    background-color: rgba(10, 25, 47, 0.1);
    color: var(--primary);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
}

.stat-info h3 {
    font-size: 0.9rem;
    color: #666;
}

.stat-info p {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary);
}

/* Tables */
.data-table {
    width: 100%;
    border-collapse: collapse;
}

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

.data-table th {
    background-color: #f8fafc;
    font-weight: 600;
    color: #475569;
}

.data-table img {
    width: 60px;
    height: 40px;
    object-fit: cover;
    border-radius: 4px;
}

/* Modal */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0,0,0,0.5);
    z-index: 1000;
    align-items: center;
    justify-content: center;
}

.modal.active {
    display: flex;
}

.modal-content {
    background: var(--white);
    padding: 30px;
    border-radius: 8px;
    width: 100%;
    max-width: 500px;
    position: relative;
}

.close-modal {
    position: absolute;
    top: 15px;
    right: 20px;
    font-size: 1.5rem;
    cursor: pointer;
    color: #666;
}