/* ============================================
   Formatexport - Professionelles B2B Design
   Farben basierend auf Logo: Blau & Orange
   ============================================ */

/* === CSS Variables === */
:root {
    /* Primärfarben aus Logo */
    --color-primary: #1e4b7a;
    --color-primary-dark: #143856;
    --color-primary-light: #2a5f94;
    
    /* Akzentfarbe Orange */
    --color-accent: #e85d04;
    --color-accent-dark: #d45203;
    --color-accent-light: #f06c18;
    
    /* Neutrale Farben */
    --color-text: #2d3748;
    --color-text-light: #718096;
    --color-text-muted: #a0aec0;
    
    /* Hintergründe */
    --color-bg: #f8fafc;
    --color-bg-white: #ffffff;
    --color-bg-light: #f1f5f9;
    --color-border: #e2e8f0;
    --color-border-light: #edf2f7;
    
    /* Status */
    --color-success: #38a169;
    --color-error: #e53e3e;
    --color-warning: #dd6b20;
    
    /* Schatten */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    
    /* Abstände */
    --space-xs: 0.25rem;
    --space-sm: 0.5rem;
    --space-md: 1rem;
    --space-lg: 1.5rem;
    --space-xl: 2rem;
    --space-2xl: 3rem;
    
    /* Radien */
    --radius-sm: 4px;
    --radius-md: 6px;
    --radius-lg: 8px;
    
    /* Typografie */
    --font-sans: 'Source Sans 3', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-mono: 'JetBrains Mono', 'Fira Code', monospace;
}

/* === Reset & Base === */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-sans);
    font-size: 1rem;
    line-height: 1.6;
    color: var(--color-text);
    background-color: var(--color-bg);
    min-height: 100vh;
}

/* === Typography === */
h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: 1.3;
    color: var(--color-primary-dark);
}

h1 { font-size: 1.875rem; }
h2 { font-size: 1.5rem; }
h3 { font-size: 1.25rem; }
h4 { font-size: 1.125rem; }

p {
    margin-bottom: var(--space-md);
}

a {
    color: var(--color-primary);
    text-decoration: none;
    transition: color 0.2s;
}

a:hover {
    color: var(--color-accent);
}

/* === Layout === */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-lg);
}

.container-narrow {
    max-width: 480px;
}

.container-wide {
    max-width: 1400px;
}

/* === Header === */
.header {
    background: var(--color-bg-white);
    border-bottom: 1px solid var(--color-border);
    padding: var(--space-md) 0;
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    height: 40px;
    width: auto;
}

.logo-link {
    display: flex;
    align-items: center;
}

.header-nav {
    display: flex;
    align-items: center;
    gap: var(--space-lg);
}

.header-user {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    font-size: 0.9rem;
    color: var(--color-text-light);
}

.header-user strong {
    color: var(--color-text);
}

/* === Buttons === */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    padding: 0.625rem 1.25rem;
    font-family: inherit;
    font-size: 0.9375rem;
    font-weight: 500;
    line-height: 1.4;
    border-radius: var(--radius-md);
    border: 1px solid transparent;
    cursor: pointer;
    transition: all 0.2s ease;
    text-decoration: none;
}

.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

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

.btn-primary:hover:not(:disabled) {
    background-color: var(--color-primary-dark);
    border-color: var(--color-primary-dark);
    color: white;
}

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

.btn-accent:hover:not(:disabled) {
    background-color: var(--color-accent-dark);
    border-color: var(--color-accent-dark);
    color: white;
}

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

.btn-secondary:hover:not(:disabled) {
    background-color: var(--color-bg-light);
    border-color: var(--color-primary-light);
    color: var(--color-primary);
}

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

.btn-danger:hover:not(:disabled) {
    background-color: #c53030;
    border-color: #c53030;
    color: white;
}

.btn-ghost {
    background: transparent;
    color: var(--color-text-light);
    border-color: transparent;
}

.btn-ghost:hover:not(:disabled) {
    color: var(--color-primary);
    background-color: var(--color-bg-light);
}

.btn-sm {
    padding: 0.375rem 0.75rem;
    font-size: 0.8125rem;
}

.btn-lg {
    padding: 0.875rem 1.75rem;
    font-size: 1rem;
}

.btn-block {
    width: 100%;
}

/* === Forms === */
.form-group {
    margin-bottom: var(--space-lg);
}

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

.form-label {
    display: block;
    margin-bottom: var(--space-sm);
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--color-text);
}

.form-label .required {
    color: var(--color-error);
    margin-left: 2px;
}

.form-input,
.form-select,
.form-textarea {
    width: 100%;
    padding: 0.625rem 0.875rem;
    font-family: inherit;
    font-size: 0.9375rem;
    line-height: 1.5;
    color: var(--color-text);
    background-color: var(--color-bg-white);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    transition: border-color 0.2s, box-shadow 0.2s;
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(30, 75, 122, 0.1);
}

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

.form-input:disabled {
    background-color: var(--color-bg-light);
    cursor: not-allowed;
}

.form-textarea {
    min-height: 100px;
    resize: vertical;
}

.form-select {
    appearance: none;
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 20 20'%3e%3cpath stroke='%236b7280' stroke-linecap='round' stroke-linejoin='round' stroke-width='1.5' d='M6 8l4 4 4-4'/%3e%3c/svg%3e");
    background-position: right 0.5rem center;
    background-repeat: no-repeat;
    background-size: 1.5em 1.5em;
    padding-right: 2.5rem;
}

.form-hint {
    margin-top: var(--space-xs);
    font-size: 0.8125rem;
    color: var(--color-text-light);
}

.form-error {
    margin-top: var(--space-xs);
    font-size: 0.8125rem;
    color: var(--color-error);
}

/* === Cards === */
.card {
    background: var(--color-bg-white);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
}

.card-header {
    padding: var(--space-lg);
    border-bottom: 1px solid var(--color-border-light);
}

.card-header h2,
.card-header h3 {
    margin: 0;
}

.card-body {
    padding: var(--space-lg);
}

.card-footer {
    padding: var(--space-lg);
    border-top: 1px solid var(--color-border-light);
    background: var(--color-bg-light);
    border-radius: 0 0 var(--radius-lg) var(--radius-lg);
}

/* === Login Page === */
.login-wrapper {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-xl);
    background: linear-gradient(135deg, var(--color-bg) 0%, #e8f0f8 100%);
}

.login-card {
    width: 100%;
    max-width: 420px;
}

.login-logo {
    text-align: center;
    margin-bottom: var(--space-xl);
}

.login-logo img {
    height: 48px;
    width: auto;
}

.login-title {
    text-align: center;
    margin-bottom: var(--space-xl);
}

.login-title h1 {
    font-size: 1.5rem;
    margin-bottom: var(--space-sm);
}

.login-title p {
    color: var(--color-text-light);
    margin: 0;
}

/* === Alerts === */
.alert {
    padding: var(--space-md) var(--space-lg);
    border-radius: var(--radius-md);
    margin-bottom: var(--space-lg);
    font-size: 0.9375rem;
}

.alert-error {
    background-color: #fff5f5;
    border: 1px solid #feb2b2;
    color: #c53030;
}

.alert-success {
    background-color: #f0fff4;
    border: 1px solid #9ae6b4;
    color: #276749;
}

/* Animation für Import-Erfolg */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(-10px); }
    to { opacity: 1; transform: translateY(0); }
}
}

.alert-warning {
    background-color: #fffaf0;
    border: 1px solid #fbd38d;
    color: #c05621;
}

.alert-info {
    background-color: #ebf8ff;
    border: 1px solid #90cdf4;
    color: #2b6cb0;
}

/* === Main Content === */
.main {
    padding: var(--space-2xl) 0;
}

.page-header {
    margin-bottom: var(--space-xl);
}

.page-header h1 {
    margin-bottom: var(--space-sm);
}

.page-header p {
    color: var(--color-text-light);
    margin: 0;
    font-size: 1.0625rem;
}

/* === Section === */
.section {
    margin-bottom: var(--space-xl);
}

.section-title {
    font-size: 1rem;
    font-weight: 600;
    color: var(--color-primary);
    margin-bottom: var(--space-lg);
    padding-bottom: var(--space-sm);
    border-bottom: 2px solid var(--color-border-light);
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.section-title::before {
    content: '';
    width: 4px;
    height: 1.25em;
    background: var(--color-accent);
    border-radius: 2px;
}

/* === Invoice Items Table === */
.items-table {
    width: 100%;
    border-collapse: collapse;
    margin-bottom: var(--space-md);
}

.items-table th {
    text-align: left;
    padding: var(--space-sm) var(--space-md);
    font-size: 0.8125rem;
    font-weight: 600;
    color: var(--color-text-light);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    background: var(--color-bg-light);
    border-bottom: 1px solid var(--color-border);
}

.items-table td {
    padding: var(--space-sm) var(--space-md);
    border-bottom: 1px solid var(--color-border-light);
    vertical-align: top;
}

.items-table .form-input {
    margin: 0;
}

.items-table .col-description {
    width: 35%;
}

.items-table .col-quantity,
.items-table .col-unit,
.items-table .col-price,
.items-table .col-vat {
    width: 12%;
}

.items-table .col-actions {
    width: 60px;
    text-align: center;
}

.btn-remove-item {
    color: var(--color-text-muted);
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--space-xs);
    border-radius: var(--radius-sm);
    transition: color 0.2s, background 0.2s;
}

.btn-remove-item:hover {
    color: var(--color-error);
    background: #fff5f5;
}

/* === Admin Table === */
.admin-table {
    width: 100%;
    border-collapse: collapse;
}

.admin-table th {
    text-align: left;
    padding: var(--space-md);
    font-size: 0.8125rem;
    font-weight: 600;
    color: var(--color-text-light);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    background: var(--color-bg-light);
    border-bottom: 1px solid var(--color-border);
}

.admin-table td {
    padding: var(--space-md);
    border-bottom: 1px solid var(--color-border-light);
}

.admin-table tr:hover {
    background: var(--color-bg);
}

.badge {
    display: inline-flex;
    align-items: center;
    padding: 0.25rem 0.625rem;
    font-size: 0.75rem;
    font-weight: 600;
    border-radius: 9999px;
    text-transform: uppercase;
    letter-spacing: 0.3px;
}

.badge-admin {
    background: #ebf4ff;
    color: var(--color-primary);
}

.badge-user {
    background: var(--color-bg-light);
    color: var(--color-text-light);
}

.badge-active {
    background: #f0fff4;
    color: var(--color-success);
}

.badge-inactive {
    background: #fff5f5;
    color: var(--color-error);
}

/* === File Upload === */
.file-upload {
    border: 2px dashed var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--space-xl);
    text-align: center;
    background: var(--color-bg);
    transition: border-color 0.2s, background 0.2s;
    cursor: pointer;
}

.file-upload:hover {
    border-color: var(--color-primary-light);
    background: var(--color-bg-light);
}

.file-upload input[type="file"] {
    display: none;
}

.file-upload-icon {
    font-size: 2.5rem;
    color: var(--color-text-muted);
    margin-bottom: var(--space-md);
}

.file-upload-text {
    color: var(--color-text-light);
    font-size: 0.9375rem;
}

.file-upload-text strong {
    color: var(--color-primary);
}

/* File Info (nach Upload) */
.file-info {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    padding: var(--space-md) var(--space-lg);
    background: var(--color-bg-light);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    margin-top: var(--space-md);
}

.file-info-icon {
    font-size: 1.5rem;
}

.file-info-details {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.file-info .file-name {
    font-weight: 600;
    color: var(--color-text);
}

.file-info .file-size {
    font-size: 0.8125rem;
    color: var(--color-text-muted);
}

/* Toggle Switch */
.toggle-option {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.toggle-switch {
    position: relative;
    display: inline-block;
    width: 48px;
    height: 26px;
}

.toggle-switch input {
    opacity: 0;
    width: 0;
    height: 0;
}

.toggle-slider {
    position: absolute;
    cursor: pointer;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: #ccc;
    transition: 0.3s;
    border-radius: 26px;
}

.toggle-slider:before {
    position: absolute;
    content: "";
    height: 20px;
    width: 20px;
    left: 3px;
    bottom: 3px;
    background-color: white;
    transition: 0.3s;
    border-radius: 50%;
}

.toggle-switch input:checked + .toggle-slider {
    background-color: var(--color-primary);
}

.toggle-switch input:checked + .toggle-slider:before {
    transform: translateX(22px);
}

.toggle-label {
    font-size: 0.9rem;
    color: var(--color-text);
}

/* Modal */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
}

.modal-backdrop {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
}

.modal-content {
    position: relative;
    background: var(--color-bg);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl);
    max-width: 600px;
    width: 90%;
    max-height: 80vh;
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

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

.modal-header h3 {
    margin: 0;
    font-size: 1.125rem;
}

.modal-close {
    background: none;
    border: none;
    font-size: 1.25rem;
    cursor: pointer;
    color: var(--color-text-muted);
    padding: 0.25rem;
}

.modal-close:hover {
    color: var(--color-text);
}

.modal-body {
    padding: var(--space-lg);
    overflow-y: auto;
    flex: 1;
}

.modal-footer {
    display: flex;
    justify-content: flex-end;
    gap: var(--space-sm);
    padding: var(--space-lg);
    border-top: 1px solid var(--color-border);
}

/* Preview Sections */
.preview-section {
    margin-bottom: var(--space-lg);
}

.preview-section h4 {
    font-size: 0.875rem;
    color: var(--color-primary);
    margin-bottom: var(--space-sm);
    padding-bottom: var(--space-xs);
    border-bottom: 1px solid var(--color-border);
}

.preview-grid {
    display: grid;
    gap: var(--space-sm);
}

.preview-item {
    display: flex;
    gap: var(--space-sm);
}

.preview-label {
    font-size: 0.8125rem;
    color: var(--color-text-muted);
    min-width: 120px;
}

.preview-value {
    font-size: 0.875rem;
    color: var(--color-text);
    font-weight: 500;
}

.preview-value:empty::after,
.preview-value:contains("-")::after {
    content: "-";
    color: var(--color-text-muted);
}

.preview-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.8125rem;
}

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

.preview-table th {
    background: var(--color-bg-light);
    font-weight: 600;
    color: var(--color-text-muted);
}

/* Notification (kleine Benachrichtigung) */
.notification {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--space-sm) var(--space-md);
    margin: var(--space-sm) var(--space-md);
    border-radius: var(--radius-md);
    font-size: 0.875rem;
    transition: opacity 0.3s ease;
}

.notification button {
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.25rem;
    margin-left: var(--space-sm);
    opacity: 0.7;
}

.notification button:hover {
    opacity: 1;
}

.notification-error {
    background: #fff5f5;
    border: 1px solid #feb2b2;
    color: #c53030;
}

.notification-info {
    background: #ebf8ff;
    border: 1px solid #90cdf4;
    color: #2b6cb0;
}

.notification-success {
    background: #f0fff4;
    border: 1px solid #9ae6b4;
    color: #276749;
}

/* === Totals === */
.totals {
    display: flex;
    justify-content: flex-end;
    margin-top: var(--space-xl);
}

.totals-box {
    width: 300px;
    background: var(--color-bg-light);
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
}

.totals-row {
    display: flex;
    justify-content: space-between;
    padding: var(--space-sm) 0;
    font-size: 0.9375rem;
}

.totals-row.total {
    border-top: 2px solid var(--color-border);
    margin-top: var(--space-sm);
    padding-top: var(--space-md);
    font-weight: 600;
    font-size: 1.125rem;
}

.totals-row.total .totals-value {
    color: var(--color-primary);
}

/* === Actions === */
.actions {
    display: flex;
    gap: var(--space-md);
    margin-top: var(--space-xl);
    padding-top: var(--space-xl);
    border-top: 1px solid var(--color-border);
}

.actions-right {
    margin-left: auto;
}

/* === Utilities === */
.text-center { text-align: center; }
.text-right { text-align: right; }
.text-muted { color: var(--color-text-light); }
.text-error { color: var(--color-error); }
.text-success { color: var(--color-success); }

.mt-sm { margin-top: var(--space-sm); }
.mt-md { margin-top: var(--space-md); }
.mt-lg { margin-top: var(--space-lg); }
.mt-xl { margin-top: var(--space-xl); }

.mb-sm { margin-bottom: var(--space-sm); }
.mb-md { margin-bottom: var(--space-md); }
.mb-lg { margin-bottom: var(--space-lg); }
.mb-xl { margin-bottom: var(--space-xl); }

.hidden { display: none !important; }

/* === Responsive === */
@media (max-width: 768px) {
    :root {
        font-size: 15px;
    }
    
    .container {
        padding: 0 var(--space-md);
    }
    
    .header-inner {
        flex-wrap: wrap;
        gap: var(--space-md);
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
    
    .items-table {
        display: block;
        overflow-x: auto;
    }
    
    .totals {
        justify-content: stretch;
    }
    
    .totals-box {
        width: 100%;
    }
    
    .actions {
        flex-direction: column;
    }
    
    .actions-right {
        margin-left: 0;
    }
    
    .btn-block-mobile {
        width: 100%;
    }
}

/* === Print === */
@media print {
    .header,
    .actions,
    .btn {
        display: none !important;
    }
    
    .main {
        padding: 0;
    }
    
    .card {
        box-shadow: none;
        border: none;
    }
}