/* Fakturační systém - Responzivní styly */

:root {
    --primary-color: #3498db;
    --primary-dark: #2980b9;
    --success-color: #27ae60;
    --warning-color: #f39c12;
    --danger-color: #e74c3c;
    --light-bg: #f8f9fa;
    --border-color: #dee2e6;
    --text-color: #333;
    --text-muted: #6c757d;
}

* {
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
    background-color: #f5f6fa;
    margin: 0;
    padding: 0;
    color: var(--text-color);
    line-height: 1.6;
}

/* Navigace */
.navbar {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    padding: 1rem;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.navbar-content {
    max-width: 1400px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
}

.navbar-brand {
    color: white;
    font-size: 1.5rem;
    font-weight: bold;
    text-decoration: none;
}

.navbar-nav {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
    align-items: center;
}

.navbar-nav a {
    color: rgba(255,255,255,0.9);
    text-decoration: none;
    padding: 0.5rem 1rem;
    border-radius: 5px;
    transition: all 0.3s;
}

.navbar-nav a:hover,
.navbar-nav a.active {
    background: rgba(255,255,255,0.2);
    color: white;
}

/* Hlavní obsah */
.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 2rem 1rem;
}

/* Karty */
.card {
    background: white;
    border-radius: 10px;
    box-shadow: 0 2px 15px rgba(0,0,0,0.05);
    margin-bottom: 1.5rem;
    overflow: hidden;
}

.card-header {
    background: var(--light-bg);
    padding: 1rem 1.5rem;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
}

.card-header h2 {
    margin: 0;
    font-size: 1.25rem;
    color: var(--text-color);
}

.card-body {
    padding: 1.5rem;
}

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

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

.form-control {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 1px solid var(--border-color);
    border-radius: 5px;
    font-size: 1rem;
    transition: border-color 0.3s, box-shadow 0.3s;
}

.form-control:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(52, 152, 219, 0.1);
}

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

/* Tlačítka */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: 5px;
    font-size: 1rem;
    cursor: pointer;
    transition: all 0.3s;
    text-decoration: none;
    white-space: nowrap;
}

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

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

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

.btn-success:hover {
    background: #219a52;
}

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

.btn-warning:hover {
    background: #d68910;
}

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

.btn-danger:hover {
    background: #c0392b;
}

.btn-secondary {
    background: #6c757d;
    color: white;
}

.btn-secondary:hover {
    background: #5a6268;
}

.btn-sm {
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
}

.btn-group {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}

/* Tabulky */
.table-responsive {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
}

.table {
    width: 100%;
    border-collapse: collapse;
    min-width: 600px;
}

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

.table th {
    background: var(--light-bg);
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    font-size: 0.75rem;
    letter-spacing: 0.5px;
}

.table tbody tr:hover {
    background: #f8f9fa;
}

/* Statusy */
.status {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
}

.status-draft {
    background: #e9ecef;
    color: #495057;
}

.status-issued {
    background: #fff3cd;
    color: #856404;
}

.status-paid {
    background: #d4edda;
    color: #155724;
}

.status-cancelled {
    background: #f8d7da;
    color: #721c24;
}

/* Stav zaplacení */
.pay-badge {
    display: inline-block;
    padding: 0.3rem 0.8rem;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 700;
    letter-spacing: 0.02em;
    white-space: nowrap;
    border: 1px solid transparent;
}

.pay-badge.pay-paid {
    background: #d4edda;
    color: #155724;
    border-color: #a3d3b0;
}

.pay-badge.pay-unpaid {
    background: #fff3cd;
    color: #856404;
    border-color: #ecd48a;
}

.pay-badge.pay-overdue {
    background: #f8d7da;
    color: #721c24;
    border-color: #e6a4ab;
}

.pay-badge.pay-cancelled {
    background: #e9ecef;
    color: #495057;
    border-color: #ced4da;
}

.pay-detail {
    display: block;
    margin-top: 0.2rem;
    font-size: 0.75rem;
    color: #777;
}

/* Velký pruh se stavem zaplacení */
.pay-banner {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.9rem 1.25rem;
    border-radius: 6px;
    margin-bottom: 1.25rem;
    font-size: 1.15rem;
    font-weight: 700;
    border-left: 6px solid;
}

.pay-banner .pay-banner-note {
    font-size: 0.9rem;
    font-weight: 400;
    opacity: 0.85;
}

.pay-banner.pay-paid {
    background: #d4edda;
    color: #155724;
    border-left-color: #28a745;
}

.pay-banner.pay-unpaid {
    background: #fff3cd;
    color: #856404;
    border-left-color: #ffc107;
}

.pay-banner.pay-overdue {
    background: #f8d7da;
    color: #721c24;
    border-left-color: #dc3545;
}

.pay-banner.pay-cancelled {
    background: #e9ecef;
    color: #495057;
    border-left-color: #adb5bd;
}

/* Alertu */
.alert {
    padding: 1rem 1.5rem;
    border-radius: 5px;
    margin-bottom: 1rem;
}

.alert-success {
    background: #d4edda;
    color: #155724;
    border: 1px solid #c3e6cb;
}

.alert-danger {
    background: #f8d7da;
    color: #721c24;
    border: 1px solid #f5c6cb;
}

.alert-warning {
    background: #fff3cd;
    color: #856404;
    border: 1px solid #ffeeba;
}

.alert-info {
    background: #d1ecf1;
    color: #0c5460;
    border: 1px solid #bee5eb;
}

/* Položky faktury */
.invoice-items {
    margin-top: 1rem;
}

.invoice-item {
    background: var(--light-bg);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 1rem;
    margin-bottom: 1rem;
    position: relative;
}

.invoice-item-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
}

.invoice-item-number {
    font-weight: 600;
    color: var(--primary-color);
}

.item-row {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr 1fr;
    gap: 1rem;
    align-items: end;
}

.item-totals {
    background: white;
    padding: 0.75rem;
    border-radius: 5px;
    margin-top: 1rem;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1rem;
    font-size: 0.875rem;
}

.item-totals span {
    text-align: center;
}

.item-totals .original {
    color: var(--text-muted);
    text-decoration: line-through;
}

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

.item-totals .final {
    color: var(--success-color);
    font-weight: 600;
}

/* Přihlašovací stránka */
.login-container {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1rem;
}

.login-box {
    background: white;
    border-radius: 10px;
    box-shadow: 0 10px 40px rgba(0,0,0,0.1);
    padding: 2rem;
    width: 100%;
    max-width: 400px;
}

.login-box h1 {
    text-align: center;
    margin-bottom: 2rem;
    color: var(--primary-color);
}

/* Statistiky */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
    margin-bottom: 2rem;
}

.stat-card {
    background: white;
    border-radius: 10px;
    padding: 1.5rem;
    box-shadow: 0 2px 15px rgba(0,0,0,0.05);
    text-align: center;
}

.stat-card .icon {
    font-size: 2rem;
    margin-bottom: 0.5rem;
}

.stat-card .value {
    font-size: 2rem;
    font-weight: bold;
    color: var(--primary-color);
}

.stat-card .label {
    color: var(--text-muted);
    font-size: 0.875rem;
}

/* QR kód */
.qr-code {
    text-align: center;
    padding: 1rem;
    background: white;
    border-radius: 10px;
    margin-top: 1rem;
}

.qr-code img {
    max-width: 200px;
}

/* Náhled faktury */
.invoice-preview {
    background: white;
    border: 1px solid var(--border-color);
    border-radius: 10px;
    padding: 2rem;
    max-width: 800px;
    margin: 0 auto;
}

.invoice-preview-header {
    display: flex;
    justify-content: space-between;
    margin-bottom: 2rem;
    flex-wrap: wrap;
    gap: 2rem;
}

.invoice-preview-parties {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
    margin-bottom: 2rem;
}

/* Responzivita */
@media (max-width: 992px) {
    .navbar-content {
        flex-direction: column;
    }
    
    .navbar-nav {
        width: 100%;
        justify-content: center;
    }
    
    .item-row {
        grid-template-columns: 1fr 1fr;
    }
    
    .item-row > div:first-child {
        grid-column: span 2;
    }
}

@media (max-width: 768px) {
    .container {
        padding: 1rem;
    }
    
    .card-header {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
    
    .invoice-preview-parties {
        grid-template-columns: 1fr;
    }
    
    .item-row {
        grid-template-columns: 1fr;
    }
    
    .item-row > div:first-child {
        grid-column: span 1;
    }
    
    .item-totals {
        grid-template-columns: 1fr;
    }
    
    .btn-group {
        width: 100%;
    }
    
    .btn-group .btn {
        flex: 1;
    }
    
    .stats-grid {
        grid-template-columns: 1fr 1fr;
    }
    
    .table th,
    .table td {
        padding: 0.75rem 0.5rem;
        font-size: 0.875rem;
    }
}

@media (max-width: 480px) {
    .navbar-brand {
        font-size: 1.25rem;
    }
    
    .navbar-nav a {
        padding: 0.5rem 0.75rem;
        font-size: 0.875rem;
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .login-box {
        padding: 1.5rem;
    }
}

/* Tisk */
@media print {
    .navbar,
    .btn,
    .no-print {
        display: none !important;
    }
    
    .container {
        max-width: 100%;
        padding: 0;
    }
    
    .card {
        box-shadow: none;
        border: none;
    }
}

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

.text-right {
    text-align: right;
}

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

.mb-0 {
    margin-bottom: 0;
}

.mb-1 {
    margin-bottom: 1rem;
}

.mt-1 {
    margin-top: 1rem;
}

.d-flex {
    display: flex;
}

.justify-between {
    justify-content: space-between;
}

.align-center {
    align-items: center;
}

.gap-1 {
    gap: 1rem;
}

.hidden {
    display: none;
}