@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&display=swap');

:root {
    --primary-color: #d4af37; /* Gold */
    --primary-hover: #b5952f;
    --secondary-color: #c0c0c0; /* Silver */
    --bg-color: #f4f7f6;
    --card-bg: #ffffff;
    --text-main: #333333;
    --text-muted: #777777;
    --sidebar-bg: #1a1a2e;
    --sidebar-hover: #16213e;
    --sidebar-text: #e0e0e0;
    --danger: #e74c3c;
    --success: #2ecc71;
    --border-color: #e2e8f0;
    
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.12), 0 1px 2px rgba(0,0,0,0.24);
    --shadow-md: 0 4px 6px rgba(0,0,0,0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.1), 0 4px 6px -2px rgba(0,0,0,0.05);
}

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

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

/* =========================================
   LOGIN PAGE STYLES
   ========================================= */
.login-body {
    justify-content: center;
    align-items: center;
    background: linear-gradient(135deg, #1a1a2e 0%, #16213e 100%);
}

.login-container {
    background: rgba(255, 255, 255, 0.95);
    padding: 2.5rem;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    width: 100%;
    max-width: 400px;
    backdrop-filter: blur(10px);
}

.login-header {
    text-align: center;
    margin-bottom: 2rem;
}

.login-header h1 {
    color: var(--primary-color);
    font-size: 1.8rem;
    font-weight: 700;
}

.login-header p {
    color: var(--text-muted);
    font-size: 0.9rem;
    margin-top: 0.5rem;
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    font-size: 0.9rem;
}

.form-control {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    font-size: 1rem;
    transition: all 0.3s ease;
}

.form-control:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(212, 175, 55, 0.2);
}

.btn {
    display: inline-block;
    font-weight: 500;
    text-align: center;
    cursor: pointer;
    border: 1px solid transparent;
    padding: 0.75rem 1.5rem;
    font-size: 1rem;
    border-radius: var(--radius-md);
    transition: all 0.3s ease;
    width: 100%;
}

.btn-primary {
    color: #fff;
    background-color: var(--primary-color);
    border-color: var(--primary-color);
}

.btn-primary:hover {
    background-color: var(--primary-hover);
    border-color: var(--primary-hover);
    transform: translateY(-1px);
}

.alert {
    padding: 0.75rem 1rem;
    margin-bottom: 1rem;
    border: 1px solid transparent;
    border-radius: var(--radius-md);
    font-size: 0.9rem;
}

.alert-danger {
    color: #721c24;
    background-color: #f8d7da;
    border-color: #f5c6cb;
}

/* =========================================
   LAYOUT (SIDEBAR & MAIN CONTENT)
   ========================================= */
.sidebar {
    width: 260px;
    background-color: var(--sidebar-bg);
    color: var(--sidebar-text);
    display: flex;
    flex-direction: column;
    height: 100vh;
    position: fixed;
    left: 0;
    top: 0;
    z-index: 100;
}

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

.sidebar-header h2 {
    color: var(--primary-color);
    font-size: 1.5rem;
    letter-spacing: 1px;
}

.sidebar-nav {
    flex-grow: 1;
    padding: 1.5rem 0;
    overflow-y: auto;
}

.sidebar-nav ul {
    list-style: none;
}

.sidebar-nav li a {
    display: flex;
    align-items: center;
    padding: 0.8rem 1.5rem;
    color: var(--sidebar-text);
    text-decoration: none;
    transition: all 0.3s ease;
    font-size: 0.95rem;
}

.sidebar-nav li a i {
    margin-right: 12px;
    font-size: 1.1rem;
    width: 20px;
    text-align: center;
}

.sidebar-nav li a:hover,
.sidebar-nav li a.active {
    background-color: var(--sidebar-hover);
    border-left: 4px solid var(--primary-color);
    color: #fff;
}

.sidebar-footer {
    padding: 1.5rem;
    border-top: 1px solid rgba(255,255,255,0.1);
}

.sidebar-footer a {
    color: var(--sidebar-text);
    text-decoration: none;
    display: flex;
    align-items: center;
    transition: color 0.3s ease;
}

.sidebar-footer a:hover {
    color: var(--primary-color);
}

.main-content {
    flex-grow: 1;
    margin-left: 260px;
    padding: 2rem;
    display: flex;
    flex-direction: column;
    height: 100vh;
    overflow-y: auto;
}

.page-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
}

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

.user-info {
    display: flex;
    align-items: center;
    gap: 10px;
}

.user-info .role-badge {
    background-color: var(--primary-color);
    color: #fff;
    padding: 3px 8px;
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
}

/* =========================================
   CARDS & GRIDS (Dashboard)
   ========================================= */
.dashboard-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.stat-card {
    background: var(--card-bg);
    padding: 1.5rem;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    display: flex;
    align-items: center;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.stat-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-md);
}

.stat-icon {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 1.8rem;
    margin-right: 1rem;
}

.stat-icon.gold { background: rgba(212, 175, 55, 0.15); color: var(--primary-color); }
.stat-icon.silver { background: rgba(192, 192, 192, 0.2); color: var(--secondary-color); }
.stat-icon.sales { background: rgba(46, 204, 113, 0.15); color: var(--success); }
.stat-icon.stock { background: rgba(52, 152, 219, 0.15); color: #3498db; }

.stat-details h3 {
    font-size: 0.9rem;
    color: var(--text-muted);
    font-weight: 500;
    margin-bottom: 0.2rem;
}

.stat-details p {
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--text-main);
}

/* Charts and Panels */
.panel {
    background: var(--card-bg);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    padding: 1.5rem;
    margin-bottom: 2rem;
}

.panel-header {
    margin-bottom: 1.5rem;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 0.8rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.panel-header h2 {
    font-size: 1.2rem;
    font-weight: 600;
}

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

.table {
    width: 100%;
    border-collapse: collapse;
}

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

.table th {
    background-color: #f8fafc;
    font-weight: 600;
    color: var(--text-muted);
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.table tbody tr {
    transition: background-color 0.2s;
}

.table tbody tr:hover {
    background-color: #f1f5f9;
}

.badge {
    padding: 0.3rem 0.6rem;
    border-radius: 2rem;
    font-size: 0.75rem;
    font-weight: 600;
}
.badge-warning { background: #fff3cd; color: #856404; }
.badge-danger { background: #f8d7da; color: #721c24; }
.badge-success { background: #d4edda; color: #155724; }
.badge-gold { background: rgba(212, 175, 55, 0.2); color: #8a7020; }
.badge-silver { background: rgba(192, 192, 192, 0.4); color: #555; }

/* =========================================
   FORMS & MODALS (Add later if needed)
   ========================================= */
.row {
    display: flex;
    flex-wrap: wrap;
    margin: -0.75rem;
}
.col-md-6 {
    width: 50%;
    padding: 0.75rem;
}
.col-md-4 {
    width: 33.333%;
    padding: 0.75rem;
}
.col-md-3 {
    width: 25%;
    padding: 0.75rem;
}
.col-md-12 {
    width: 100%;
    padding: 0.75rem;
}