/* NexRen Solar - Admin Dashboard & System Custom CSS */

:root {
    --primary-color: #0b2545;
    --primary-hover: #134074;
    --accent-color: #134074;
    --secondary-color: #8da9c4;
    --bg-light: #f4f6f9;
    --card-bg: #ffffff;
    --text-dark: #1d2d44;
    --text-muted: #6c757d;
    --border-color: #e2e8f0;
    --success-color: #10b981;
    --warning-color: #f59e0b;
    --danger-color: #ef4444;
    --radius-sm: 6px;
    --radius-md: 10px;
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.08);
}

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

body {
    font-family: 'Segoe UI', system-ui, -apple-system, Roboto, sans-serif;
    background-color: var(--bg-light);
    color: var(--text-dark);
    line-height: 1.5;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* Navbar */
.navbar {
    background-color: var(--primary-color);
    color: #ffffff;
    padding: 0.85rem 1.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: 0 2px 8px rgba(0,0,0,0.15);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.navbar-brand {
    display: flex;
    align-items: center;
    gap: 12px;
    text-decoration: none;
    color: #ffffff;
    font-weight: 700;
    font-size: 1.25rem;
    letter-spacing: 0.5px;
}

.navbar-brand img {
    height: 34px;
    object-fit: contain;
    background: #fff;
    padding: 2px 6px;
    border-radius: 4px;
}

.navbar-menu {
    display: flex;
    align-items: center;
    gap: 8px;
    list-style: none;
}

.nav-link {
    color: #cbd5e1;
    text-decoration: none;
    padding: 8px 14px;
    border-radius: var(--radius-sm);
    font-size: 0.95rem;
    font-weight: 500;
    transition: all 0.2s ease;
}

.nav-link:hover,
.nav-link.active {
    color: #ffffff;
    background-color: rgba(255, 255, 255, 0.12);
}

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

.user-badge {
    font-size: 0.85rem;
    background-color: rgba(255, 255, 255, 0.15);
    padding: 4px 10px;
    border-radius: 20px;
}

.btn-logout {
    color: #fca5a5;
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 600;
    padding: 5px 12px;
    border: 1px solid rgba(252, 165, 165, 0.3);
    border-radius: var(--radius-sm);
    transition: all 0.2s;
}

.btn-logout:hover {
    background: #ef4444;
    color: #fff;
    border-color: #ef4444;
}

/* Container & Layout */
.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 1.5rem;
    width: 100%;
    flex: 1;
}

/* Page Header */
.page-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
    flex-wrap: wrap;
    gap: 1rem;
}

.page-title {
    font-size: 1.6rem;
    font-weight: 700;
    color: var(--primary-color);
}

/* Cards */
.card {
    background: var(--card-bg);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-color);
    margin-bottom: 1.5rem;
    overflow: hidden;
}

.card-header {
    padding: 1rem 1.25rem;
    background: #f8fafc;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.card-header h3 {
    font-size: 1.1rem;
    color: var(--primary-color);
    font-weight: 600;
}

.card-body {
    padding: 1.25rem;
}

/* Dashboard Stats Grid */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 1.25rem;
    margin-bottom: 1.5rem;
}

.stat-card {
    background: var(--card-bg);
    padding: 1.25rem;
    border-radius: var(--radius-md);
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-sm);
    display: flex;
    align-items: center;
    gap: 1rem;
}

.stat-icon {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: rgba(19, 64, 116, 0.1);
    color: var(--primary-color);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: bold;
}

.stat-info h4 {
    font-size: 0.85rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.stat-info .stat-value {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-dark);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    padding: 8px 16px;
    border-radius: var(--radius-sm);
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    border: 1px solid transparent;
    text-decoration: none;
    transition: all 0.2s ease;
}

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

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

.btn-secondary {
    background-color: #e2e8f0;
    color: #334155;
}

.btn-secondary:hover {
    background-color: #cbd5e1;
}

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

.btn-success:hover {
    background-color: #059669;
}

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

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

.btn-sm {
    padding: 4px 10px;
    font-size: 0.8rem;
}

/* Forms */
.form-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1rem;
}

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

.form-group.full-width {
    grid-column: 1 / -1;
}

.form-label {
    display: block;
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: 0.35rem;
    color: #334155;
}

.form-label .required {
    color: var(--danger-color);
}

.form-control {
    width: 100%;
    padding: 8px 12px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    font-size: 0.9rem;
    font-family: inherit;
    background-color: #ffffff;
    transition: border-color 0.2s;
}

.form-control:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(11, 37, 69, 0.1);
}

textarea.form-control {
    resize: vertical;
    min-height: 70px;
}

/* Split Layout for Receipt Creation (Form Left, Live Preview Right) */
.create-receipt-layout {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
    align-items: start;
}

.preview-column {
    position: sticky;
    top: 5rem;
    max-height: calc(100vh - 6rem);
    overflow-y: auto;
    background: #e2e8f0;
    padding: 1.25rem;
    border-radius: var(--radius-md);
    display: flex;
    justify-content: center;
    border: 1px solid #cbd5e1;
}

.preview-wrapper {
    transform-origin: top center;
    transition: transform 0.2s;
}

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

.data-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.9rem;
}

.data-table th,
.data-table td {
    padding: 10px 14px;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

.data-table th {
    background-color: #f8fafc;
    font-weight: 600;
    color: #475569;
    text-transform: uppercase;
    font-size: 0.75rem;
    letter-spacing: 0.5px;
}

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

/* Badges */
.badge {
    display: inline-block;
    padding: 3px 8px;
    border-radius: 12px;
    font-size: 0.75rem;
    font-weight: 600;
    text-align: center;
}

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

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

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

/* Alert Boxes */
.alert {
    padding: 10px 16px;
    border-radius: var(--radius-sm);
    margin-bottom: 1rem;
    font-size: 0.9rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

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

.alert-danger {
    background-color: #fee2e2;
    color: #991b1b;
    border: 1px solid #fca5a5;
}

/* Login Page Styling */
.login-body {
    background-color: var(--primary-color);
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
}

.login-card {
    background: #ffffff;
    width: 100%;
    max-width: 420px;
    padding: 2.25rem;
    border-radius: var(--radius-md);
    box-shadow: 0 10px 25px rgba(0,0,0,0.2);
    text-align: center;
}

.login-header {
    margin-bottom: 1.75rem;
}

.login-header img {
    max-height: 55px;
    margin-bottom: 10px;
}

.login-header h2 {
    color: var(--primary-color);
    font-size: 1.4rem;
}

.login-header p {
    font-size: 0.85rem;
    color: var(--text-muted);
}

/* Filter Bar */
.filter-bar {
    display: flex;
    gap: 10px;
    margin-bottom: 1rem;
    flex-wrap: wrap;
    background: #f8fafc;
    padding: 10px;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border-color);
}

.filter-bar input,
.filter-bar select {
    padding: 6px 12px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    font-size: 0.85rem;
}

/* Responsive Media Queries */
@media (max-width: 1024px) {
    .create-receipt-layout {
        grid-template-columns: 1fr;
    }
    .preview-column {
        position: static;
        max-height: none;
        overflow-x: auto;
    }
}

@media (max-width: 768px) {
    .navbar {
        flex-direction: column;
        gap: 10px;
    }
    .navbar-menu {
        flex-wrap: wrap;
        justify-content: center;
    }
    .signatures-container {
        flex-direction: column;
        gap: 20px;
        align-items: center;
    }
    .signature-box {
        width: 80%;
    }
}