/* Petrol Management System - Main Stylesheet */

:root {
    --primary-color: #2563eb;
    --primary-dark: #1e40af;
    --secondary-color: #64748b;
    --success-color: #10b981;
    --warning-color: #f59e0b;
    --danger-color: #ef4444;
    --info-color: #3b82f6;
    --light-bg: #f8fafc;
    --dark-text: #1e293b;
    --border-color: #e2e8f0;
    --sidebar-width: 260px;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background-color: var(--light-bg);
    color: var(--dark-text);
    line-height: 1.6;
}

/* Login Page */
.login-page {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
}

.login-container {
    width: 100%;
    max-width: 400px;
    padding: 20px;
}

.login-box {
    background: white;
    border-radius: 12px;
    padding: 40px;
    box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
}

.login-header {
    text-align: center;
    margin-bottom: 30px;
}

.login-header i {
    font-size: 48px;
    color: var(--primary-color);
    margin-bottom: 15px;
}

.login-header h1 {
    font-size: 24px;
    color: var(--dark-text);
    margin-bottom: 8px;
}

.login-header p {
    color: var(--secondary-color);
    font-size: 14px;
}

.login-form .form-group {
    margin-bottom: 20px;
}

.login-form label {
    display: block;
    margin-bottom: 8px;
    color: var(--dark-text);
    font-weight: 500;
}

.login-form input {
    width: 100%;
    padding: 12px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    font-size: 14px;
    transition: border-color 0.3s;
}

.login-form input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.login-footer {
    text-align: center;
    margin-top: 20px;
    color: var(--secondary-color);
    font-size: 12px;
}

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

/* Sidebar */
.sidebar {
    width: var(--sidebar-width);
    background: white;
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    position: fixed;
    height: 100vh;
    overflow-y: auto;
}

.sidebar-header {
    padding: 20px;
    border-bottom: 1px solid var(--border-color);
}

.sidebar-header h2 {
    font-size: 20px;
    color: var(--primary-color);
    display: flex;
    align-items: center;
    gap: 10px;
}

.sidebar-nav {
    flex: 1;
    padding: 10px 0;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 20px;
    color: var(--secondary-color);
    text-decoration: none;
    transition: all 0.3s;
    border-left: 3px solid transparent;
}

.nav-item:hover {
    background: var(--light-bg);
    color: var(--primary-color);
}

.nav-item.active {
    background: rgba(37, 99, 235, 0.1);
    color: var(--primary-color);
    border-left-color: var(--primary-color);
    font-weight: 500;
}

.sidebar-footer {
    padding: 20px;
    border-top: 1px solid var(--border-color);
}

.user-info {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 15px;
    padding: 10px;
    background: var(--light-bg);
    border-radius: 8px;
}

.user-info i {
    font-size: 32px;
    color: var(--primary-color);
}

.user-info strong {
    display: block;
    font-size: 14px;
}

.user-info small {
    display: block;
    color: var(--secondary-color);
    font-size: 12px;
}

.logout-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    width: 100%;
    padding: 10px;
    background: var(--danger-color);
    color: white;
    text-decoration: none;
    border-radius: 8px;
    transition: background 0.3s;
}

.logout-btn:hover {
    background: #dc2626;
}

/* Main Content */
.main-content {
    flex: 1;
    margin-left: var(--sidebar-width);
    padding: 30px;
}

.content-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 30px;
}

.content-header h1 {
    font-size: 28px;
    color: var(--dark-text);
}

.current-time {
    color: var(--secondary-color);
    font-size: 14px;
}

/* Cards */
.card {
    background: white;
    border-radius: 12px;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
    margin-bottom: 30px;
    overflow: hidden;
}

.card-header {
    padding: 20px;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.card-header h3 {
    font-size: 18px;
    color: var(--dark-text);
    display: flex;
    align-items: center;
    gap: 10px;
}

.card-body {
    padding: 20px;
}

/* Dashboard Grid */
.dashboard-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
    margin-bottom: 30px;
}

.stat-card {
    background: white;
    border-radius: 12px;
    padding: 20px;
    display: flex;
    align-items: center;
    gap: 20px;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s;
}

.stat-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

.stat-icon {
    width: 60px;
    height: 60px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    color: white;
}

.stat-primary .stat-icon {
    background: var(--primary-color);
}

.stat-success .stat-icon {
    background: var(--success-color);
}

.stat-info .stat-icon {
    background: var(--info-color);
}

.stat-warning .stat-icon {
    background: var(--warning-color);
}

.stat-content h3 {
    font-size: 14px;
    color: var(--secondary-color);
    margin-bottom: 5px;
    font-weight: 500;
}

.stat-value {
    font-size: 24px;
    font-weight: 700;
    color: var(--dark-text);
}

/* Forms */
.form {
    max-width: 800px;
}

.form-group {
    margin-bottom: 20px;
}

.form-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    color: var(--dark-text);
    font-weight: 500;
    font-size: 14px;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 10px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    font-size: 14px;
    transition: border-color 0.3s;
    font-family: inherit;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.form-group small {
    display: block;
    margin-top: 5px;
    color: var(--secondary-color);
    font-size: 12px;
}

.form-actions {
    display: flex;
    gap: 10px;
    margin-top: 30px;
}

.filter-form {
    margin-bottom: 20px;
    padding: 15px;
    background: var(--light-bg);
    border-radius: 8px;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 20px;
    border: none;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    text-decoration: none;
    transition: all 0.3s;
    font-family: inherit;
}

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

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

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

.btn-secondary:hover {
    background: #475569;
}

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

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

.btn-danger:hover {
    background: #dc2626;
}

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

.btn-sm {
    padding: 6px 12px;
    font-size: 12px;
}

.btn-lg {
    padding: 14px 28px;
    font-size: 16px;
}

.btn-block {
    width: 100%;
    justify-content: center;
}

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

.data-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 14px;
}

.data-table thead {
    background: var(--light-bg);
}

.data-table th {
    padding: 12px;
    text-align: left;
    font-weight: 600;
    color: var(--dark-text);
    border-bottom: 2px solid var(--border-color);
}

.data-table th:last-child {
    text-align: center;
    width: 80px;
}

.data-table td {
    padding: 12px;
    border-bottom: 1px solid var(--border-color);
}

.data-table td:last-child {
    text-align: center;
    width: 80px;
}

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

.data-table tbody tr.low-stock {
    background: #fef3c7;
}

.data-table tfoot {
    background: var(--light-bg);
    font-weight: 600;
}

/* Badges */
.badge {
    display: inline-block;
    padding: 4px 8px;
    border-radius: 4px;
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
}

.badge-success {
    background: #d1fae5;
    color: #065f46;
}

.badge-warning {
    background: #fef3c7;
    color: #92400e;
}

.badge-danger {
    background: #fee2e2;
    color: #991b1b;
}

.badge-info {
    background: #dbeafe;
    color: #1e40af;
}

.badge-primary {
    background: #dbeafe;
    color: #1e40af;
}

.badge-secondary {
    background: #e2e8f0;
    color: #475569;
}

/* Alerts */
.alert {
    padding: 12px 16px;
    border-radius: 8px;
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.alert-success {
    background: #d1fae5;
    color: #065f46;
    border: 1px solid #a7f3d0;
}

.alert-error {
    background: #fee2e2;
    color: #991b1b;
    border: 1px solid #fecaca;
}

.alert-info {
    background: #dbeafe;
    color: #1e40af;
    border: 1px solid #bfdbfe;
}

/* Page Actions */
.page-actions {
    margin-bottom: 20px;
}

/* Calculation Box */
.calculation-box {
    background: var(--light-bg);
    padding: 20px;
    border-radius: 8px;
    margin: 20px 0;
}

.calc-row {
    display: flex;
    justify-content: space-between;
    padding: 10px 0;
    border-bottom: 1px solid var(--border-color);
}

.calc-row.total {
    font-size: 18px;
    font-weight: 700;
    border-bottom: none;
    border-top: 2px solid var(--primary-color);
    margin-top: 10px;
    padding-top: 15px;
}

/* Report Summary */
.report-summary {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
    margin: 20px 0;
}

.summary-card {
    background: var(--light-bg);
    padding: 20px;
    border-radius: 8px;
    text-align: center;
}

.summary-card h4 {
    font-size: 14px;
    color: var(--secondary-color);
    margin-bottom: 10px;
}

.summary-value {
    font-size: 24px;
    font-weight: 700;
    color: var(--primary-color);
}

/* Info Box */
.info-box {
    background: var(--light-bg);
    padding: 15px;
    border-radius: 8px;
    border-left: 4px solid var(--primary-color);
}

/* Error Page */
.error-container {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    background: var(--light-bg);
}

.error-box {
    text-align: center;
    padding: 40px;
}

.error-box i {
    font-size: 64px;
    color: var(--danger-color);
    margin-bottom: 20px;
}

.error-box h1 {
    font-size: 32px;
    margin-bottom: 10px;
}

.error-box p {
    color: var(--secondary-color);
    margin-bottom: 30px;
}

/* Action Dropdown */
.action-dropdown {
    position: relative;
    display: inline-block;
}

.action-btn {
    background: var(--light-bg);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    padding: 8px 12px;
    cursor: pointer;
    color: var(--secondary-color);
    transition: all 0.2s;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 14px;
    min-width: 36px;
}

.action-btn:hover {
    background: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
    transform: scale(1.05);
}

.action-btn:active {
    transform: scale(0.95);
}

.dropdown-menu {
    display: none;
    position: absolute;
    right: 0;
    top: 100%;
    margin-top: 5px;
    background: white;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    min-width: 200px;
    z-index: 1000;
    overflow: hidden;
    animation: dropdownFadeIn 0.2s ease-out;
}

@keyframes dropdownFadeIn {
    from {
        opacity: 0;
        transform: translateY(-5px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.action-dropdown.active .dropdown-menu {
    display: block;
}

.dropdown-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 15px;
    color: var(--dark-text);
    text-decoration: none;
    transition: background 0.2s;
    font-size: 14px;
    border: none;
    width: 100%;
    text-align: left;
}

.dropdown-item:hover {
    background: var(--light-bg);
    color: var(--primary-color);
}

.dropdown-item i {
    width: 18px;
    text-align: center;
}

.dropdown-item-danger {
    color: var(--danger-color);
}

.dropdown-item-danger:hover {
    background: #fee2e2;
    color: #991b1b;
}

.dropdown-divider {
    height: 1px;
    background: var(--border-color);
    margin: 5px 0;
}

/* Utility Classes */
.text-center {
    text-align: center;
}

.text-muted {
    color: var(--secondary-color);
}

/* Responsive */
@media (max-width: 768px) {
    .sidebar {
        transform: translateX(-100%);
        transition: transform 0.3s;
    }
    
    .main-content {
        margin-left: 0;
        padding: 15px;
    }
    
    .dashboard-grid {
        grid-template-columns: 1fr;
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
}

/* Print Styles */
@media print {
    .sidebar,
    .page-actions,
    .btn,
    .card-header .btn {
        display: none !important;
    }
    
    .main-content {
        margin-left: 0;
    }
}