/* ==========================================================
   DSW Zahlenspiegel v2.0 - Design System
   Komplett eigenes CSS, keine externen Abhängigkeiten
   ========================================================== */

/* --- Fonts (selbst gehostet) --- */
@font-face {
    font-family: 'Open Sans';
    font-style: normal;
    font-weight: 400;
    font-display: swap;
    src: url('/assets/fonts/open-sans-v34-latin-regular.woff2') format('woff2'),
    url('/assets/fonts/open-sans-v34-latin-regular.woff') format('woff');
}
@font-face {
    font-family: 'Open Sans';
    font-style: normal;
    font-weight: 500;
    font-display: swap;
    src: url('/assets/fonts/open-sans-v34-latin-500.woff2') format('woff2'),
    url('/assets/fonts/open-sans-v34-latin-500.woff') format('woff');
}

/* --- CSS Custom Properties --- */
:root {
    /* Farben */
    --color-primary: #1a5276;
    --color-primary-light: #2471a3;
    --color-primary-dark: #0e3650;
    --color-secondary: #27ae60;
    --color-secondary-light: #2ecc71;
    --color-accent: #e67e22;
    --color-danger: #c0392b;
    --color-danger-light: #e74c3c;
    --color-warning: #f39c12;
    --color-info: #3498db;
    --color-success: #27ae60;

    /* Neutrals */
    --color-white: #ffffff;
    --color-gray-50: #f8f9fa;
    --color-gray-100: #f1f3f5;
    --color-gray-200: #e9ecef;
    --color-gray-300: #dee2e6;
    --color-gray-400: #ced4da;
    --color-gray-500: #adb5bd;
    --color-gray-600: #6c757d;
    --color-gray-700: #495057;
    --color-gray-800: #343a40;
    --color-gray-900: #212529;

    /* Text */
    --text-primary: var(--color-gray-900);
    --text-secondary: var(--color-gray-600);
    --text-muted: var(--color-gray-500);
    --text-inverse: var(--color-white);

    /* Hintergrund */
    --bg-body: var(--color-gray-50);
    --bg-card: var(--color-white);
    --bg-sidebar: var(--color-primary-dark);

    /* Abstände */
    --space-xs: 0.25rem;
    --space-sm: 0.5rem;
    --space-md: 1rem;
    --space-lg: 1.5rem;
    --space-xl: 2rem;
    --space-2xl: 3rem;

    /* Border */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-full: 9999px;
    --border-color: var(--color-gray-200);

    /* Schatten */
    --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
    --shadow-md: 0 4px 6px rgba(0,0,0,0.07);
    --shadow-lg: 0 10px 25px rgba(0,0,0,0.1);

    /* Layout */
    --sidebar-width: 280px;
    --header-height: 60px;
    --max-content-width: 1200px;

    /* Transition */
    --transition: 0.2s ease;
}

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

html {
    font-size: 16px;
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
}

body {
    font-family: 'Open Sans', system-ui, -apple-system, sans-serif;
    font-size: 0.9375rem;
    line-height: 1.6;
    color: var(--text-primary);
    background: var(--bg-body);
    min-height: 100vh;
}

a {
    color: var(--color-primary-light);
    text-decoration: none;
    transition: color var(--transition);
}
a:hover {
    color: var(--color-primary);
    text-decoration: underline;
}

img { max-width: 100%; height: auto; }

h1, h2, h3, h4, h5, h6 {
    font-weight: 500;
    line-height: 1.3;
    color: var(--text-primary);
}
h1 { font-size: 1.75rem; }
h2 { font-size: 1.375rem; }
h3 { font-size: 1.125rem; }
h4 { font-size: 1rem; }

p { margin-bottom: var(--space-md); }
p:last-child { margin-bottom: 0; }

ul, ol { padding-left: var(--space-lg); }

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

/* --- Layout --- */
.app-layout {
    display: flex;
    min-height: 100vh;
}

.app-sidebar {
    position: fixed;
    top: 0;
    left: 0;
    width: var(--sidebar-width);
    height: 100vh;
    background: var(--bg-sidebar);
    color: var(--text-inverse);
    overflow-y: auto;
    z-index: 100;
    transition: transform var(--transition);
    display: flex;
    flex-direction: column;
}

.app-main {
    flex: 1;
    margin-left: var(--sidebar-width);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.app-header {
    position: sticky;
    top: 0;
    z-index: 50;
    height: var(--header-height);
    background: var(--bg-card);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 var(--space-xl);
    box-shadow: var(--shadow-sm);
}

.app-content {
    flex: 1;
    padding: var(--space-xl);
    max-width: var(--max-content-width);
    width: 100%;
    margin: 0 auto;
}

/* --- Sidebar --- */
.sidebar-brand {
    padding: var(--space-lg) var(--space-lg);
    border-bottom: 1px solid rgba(255,255,255,0.1);
    text-align: center;
}
.sidebar-brand img {
    max-height: 40px;
    margin-bottom: var(--space-sm);
}
.sidebar-brand h2 {
    color: var(--text-inverse);
    font-size: 0.95rem;
    font-weight: 500;
}

.sidebar-nav {
    flex: 1;
    padding: var(--space-md) 0;
}

.nav-section {
    padding: var(--space-sm) var(--space-lg);
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: rgba(255,255,255,0.4);
    margin-top: var(--space-md);
}

.nav-link {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-sm) var(--space-lg);
    color: rgba(255,255,255,0.75);
    font-size: 0.875rem;
    transition: all var(--transition);
    border-left: 3px solid transparent;
}
.nav-link:hover {
    background: rgba(255,255,255,0.08);
    color: var(--text-inverse);
    text-decoration: none;
}
.nav-link.active {
    background: rgba(255,255,255,0.12);
    color: var(--text-inverse);
    border-left-color: var(--color-secondary);
}
.nav-link i {
    width: 20px;
    text-align: center;
    font-size: 0.95rem;
}

.sidebar-footer {
    padding: var(--space-md) var(--space-lg);
    border-top: 1px solid rgba(255,255,255,0.1);
    font-size: 0.8rem;
    color: rgba(255,255,255,0.4);
}

/* --- Header --- */
.header-left {
    display: flex;
    align-items: center;
    gap: var(--space-md);
}
.header-right {
    display: flex;
    align-items: center;
    gap: var(--space-lg);
}

.header-group-selector select {
    padding: var(--space-xs) var(--space-sm);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    font-size: 0.85rem;
    background: var(--bg-card);
}

.header-user {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    cursor: pointer;
    position: relative;
}
.header-user-avatar {
    width: 36px;
    height: 36px;
    border-radius: var(--radius-full);
    background: var(--color-primary);
    color: var(--text-inverse);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.85rem;
    font-weight: 500;
}

.notification-badge {
    position: relative;
}
.notification-badge .badge-count {
    position: absolute;
    top: -4px;
    right: -6px;
    background: var(--color-danger);
    color: var(--text-inverse);
    font-size: 0.65rem;
    padding: 1px 5px;
    border-radius: var(--radius-full);
    min-width: 16px;
    text-align: center;
}

/* --- Cards --- */
.card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
    margin-bottom: var(--space-lg);
}
.card-header {
    padding: var(--space-md) var(--space-lg);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
}
.card-header h3 {
    margin: 0;
}
.card-body {
    padding: var(--space-lg);
}
.card-footer {
    padding: var(--space-md) var(--space-lg);
    border-top: 1px solid var(--border-color);
    background: var(--color-gray-50);
    border-radius: 0 0 var(--radius-md) var(--radius-md);
}

/* --- Buttons --- */
.btn {
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    padding: 0.5rem 1rem;
    font-family: inherit;
    font-size: 0.875rem;
    font-weight: 500;
    line-height: 1.5;
    border: 1px solid transparent;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all var(--transition);
    text-decoration: none;
    white-space: nowrap;
}
.btn:hover { text-decoration: none; }
.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

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

.btn-success {
    background: var(--color-success);
    color: var(--text-inverse);
}
.btn-success:hover {
    background: #219a52;
    color: var(--text-inverse);
}

.btn-danger {
    background: var(--color-danger);
    color: var(--text-inverse);
}
.btn-danger:hover {
    background: #a93226;
    color: var(--text-inverse);
}

.btn-outline {
    background: transparent;
    border-color: var(--border-color);
    color: var(--text-primary);
}
.btn-outline:hover {
    background: var(--color-gray-100);
    color: var(--text-primary);
}

.btn-sm {
    padding: 0.3rem 0.6rem;
    font-size: 0.8rem;
}
.btn-lg {
    padding: 0.65rem 1.5rem;
    font-size: 1rem;
}

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

.btn-group {
    display: flex;
    gap: var(--space-sm);
    flex-wrap: wrap;
}

/* --- Forms --- */
.form-group {
    margin-bottom: var(--space-lg);
}
.form-group label {
    display: block;
    margin-bottom: var(--space-xs);
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--text-primary);
}
.form-group .form-hint {
    font-size: 0.78rem;
    color: var(--text-muted);
    margin-top: var(--space-xs);
}

.form-control {
    width: 100%;
    padding: 0.5rem 0.75rem;
    font-family: inherit;
    font-size: 0.9rem;
    color: var(--text-primary);
    background: var(--bg-card);
    border: 1px solid var(--color-gray-300);
    border-radius: var(--radius-sm);
    transition: border-color var(--transition), box-shadow var(--transition);
    line-height: 1.5;
}
.form-control:focus {
    outline: none;
    border-color: var(--color-primary-light);
    box-shadow: 0 0 0 3px rgba(36, 113, 163, 0.15);
}
.form-control:disabled, .form-control[readonly] {
    background: var(--color-gray-100);
    color: var(--text-secondary);
    cursor: not-allowed;
}
.form-control.is-invalid {
    border-color: var(--color-danger);
}

textarea.form-control {
    min-height: 80px;
    resize: vertical;
}

select.form-control {
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%236c757d' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 0.75rem center;
    padding-right: 2rem;
}

/* Checkbox & Radio */
.form-check {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    margin-bottom: var(--space-sm);
}
.form-check input[type="checkbox"],
.form-check input[type="radio"] {
    width: 18px;
    height: 18px;
    cursor: pointer;
    accent-color: var(--color-primary);
}
.form-check label {
    cursor: pointer;
    font-size: 0.875rem;
    margin-bottom: 0;
}

/* Inline fields */
.form-row {
    display: flex;
    gap: var(--space-md);
    flex-wrap: wrap;
}
.form-row .form-group,
.form-row .survey-field{
    flex: 1;
    min-width: 200px;
}

/* --- Survey Form specific --- */
.survey-section {
    margin-bottom: var(--space-xl);
}
.survey-section-header {
    background: var(--color-primary);
    color: var(--text-inverse);
    padding: var(--space-md) var(--space-lg);
    border-radius: var(--radius-md) var(--radius-md) 0 0;
    display: flex;
    align-items: center;
    justify-content: space-between;
}
.survey-section-header h2 {
    color: var(--text-inverse);
    font-size: 1.1rem;
    margin: 0;
}
.survey-section-body {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-top: none;
    border-radius: 0 0 var(--radius-md) var(--radius-md);
    padding: var(--space-lg);
}

.survey-subsection {
    margin-bottom: var(--space-lg);
    padding-bottom: var(--space-lg);
    border-bottom: 1px solid var(--color-gray-200);
}
.survey-subsection:last-child {
    margin-bottom: 0;
    padding-bottom: 0;
    border-bottom: none;
}
.survey-subsection h3 {
    color: var(--color-primary);
    margin-bottom: var(--space-md);
    padding-bottom: var(--space-sm);
    border-bottom: 2px solid var(--color-gray-200);
}

.survey-field {
    display: flex;
    align-items: flex-start;
    gap: var(--space-md);
    padding: var(--space-sm) 0;
    border-bottom: 1px solid var(--color-gray-100);
}
.survey-field:last-child { border-bottom: none; }

.survey-field-label {
    flex: 1;
    font-size: 0.875rem;
    padding-top: 0.5rem;
}
.survey-field-label .required-marker {
    color: var(--color-danger);
    margin-left: 2px;
}
.survey-field-label .info-icon {
    color: var(--color-info);
    cursor: help;
    margin-left: 4px;
}
.survey-field-input {
    flex: 0 0 250px;
}
.survey-field-prev {
    flex: 0 0 auto;
    font-size: 0.78rem;
    color: var(--text-muted);
    padding-top: 0.55rem;
}

.field-public {
    background: rgba(39, 174, 96, 0.06);
    padding: var(--space-sm) var(--space-sm);
    border-radius: var(--radius-sm);
    border-left: 3px solid var(--color-success);
}

/* --- Tables --- */
.table {
    width: 100%;
    border-collapse: collapse;
}
.table th, .table td {
    padding: 0.65rem 0.75rem;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
    font-size: 0.875rem;
}
.table th {
    font-weight: 500;
    color: var(--text-secondary);
    background: var(--color-gray-50);
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.03em;
}
.table tbody tr:hover {
    background: var(--color-gray-50);
}

/* --- Alerts / Flash Messages --- */
.alert {
    padding: var(--space-md) var(--space-lg);
    border-radius: var(--radius-md);
    margin-bottom: var(--space-lg);
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    font-size: 0.875rem;
}
.alert-success {
    background: #d4edda;
    color: #155724;
    border: 1px solid #c3e6cb;
}
.alert-error {
    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;
}
.alert-close {
    margin-left: auto;
    background: none;
    border: none;
    font-size: 1.2rem;
    cursor: pointer;
    opacity: 0.5;
    color: inherit;
}
.alert-close:hover { opacity: 1; }

/* --- Status Badges --- */
.badge {
    display: inline-flex;
    align-items: center;
    padding: 0.15rem 0.5rem;
    font-size: 0.75rem;
    font-weight: 500;
    border-radius: var(--radius-full);
}
.badge-draft { background: var(--color-gray-200); color: var(--text-secondary); }
.badge-open { background: #d1ecf1; color: #0c5460; }
.badge-complete { background: #d4edda; color: #155724; }
.badge-locked { background: #f8d7da; color: #721c24; }
.badge-pending { background: #fff3cd; color: #856404; }

/* --- Progress Bar --- */
.progress {
    width: 100%;
    height: 8px;
    background: var(--color-gray-200);
    border-radius: var(--radius-full);
    overflow: hidden;
}
.progress-bar {
    height: 100%;
    background: var(--color-success);
    border-radius: var(--radius-full);
    transition: width 0.3s ease;
}

/* --- Stats Grid (Dashboard) --- */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: var(--space-lg);
    margin-bottom: var(--space-xl);
}
.stat-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: var(--space-lg);
    box-shadow: var(--shadow-sm);
}
.stat-card-value {
    font-size: 1.75rem;
    font-weight: 500;
    color: var(--color-primary);
}
.stat-card-label {
    font-size: 0.8rem;
    color: var(--text-secondary);
    margin-top: var(--space-xs);
}

/* --- Modal --- */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.5);
    z-index: 1000;
    display: none;
    align-items: center;
    justify-content: center;
}
.modal-overlay.active { display: flex; }
.modal {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    width: 90%;
    max-width: 600px;
    max-height: 90vh;
    overflow-y: auto;
}
.modal-header {
    padding: var(--space-lg);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
}
.modal-body { padding: var(--space-lg); }
.modal-footer {
    padding: var(--space-md) var(--space-lg);
    border-top: 1px solid var(--border-color);
    display: flex;
    justify-content: flex-end;
    gap: var(--space-sm);
}
.modal-close {
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--text-secondary);
    line-height: 1;
}

/* --- Tooltip --- */
.tooltip {
    position: relative;
}
.tooltip .tooltip-text {
    visibility: hidden;
    position: absolute;
    bottom: 125%;
    left: 50%;
    transform: translateX(-50%);
    background: var(--color-gray-800);
    color: var(--text-inverse);
    padding: var(--space-xs) var(--space-sm);
    border-radius: var(--radius-sm);
    font-size: 0.78rem;
    white-space: nowrap;
    z-index: 10;
}
.tooltip:hover .tooltip-text { visibility: visible; }

/* --- Utility Classes --- */
.text-center { text-align: center; }
.text-right { text-align: right; }
.text-muted { color: var(--text-muted); }
.text-danger { color: var(--color-danger); }
.text-success { color: var(--color-success); }
.text-sm { font-size: 0.8rem; }
.text-xs { font-size: 0.75rem; }

.mt-0 { margin-top: 0; }
.mt-1 { margin-top: var(--space-sm); }
.mt-2 { margin-top: var(--space-md); }
.mt-3 { margin-top: var(--space-lg); }
.mb-0 { margin-bottom: 0; }
.mb-1 { margin-bottom: var(--space-sm); }
.mb-2 { margin-bottom: var(--space-md); }
.mb-3 { margin-bottom: var(--space-lg); }

.d-flex { display: flex; }
.d-grid { display: grid; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }
.gap-1 { gap: var(--space-sm); }
.gap-2 { gap: var(--space-md); }
.gap-3 { gap: var(--space-lg); }
.flex-1 { flex: 1; }
.flex-wrap { flex-wrap: wrap; }

.hidden { display: none !important; }
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0,0,0,0);
    border: 0;
}

/* --- Loading Spinner --- */
.spinner {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 2px solid var(--color-gray-300);
    border-top-color: var(--color-primary);
    border-radius: 50%;
    animation: spin 0.6s linear infinite;
}
@keyframes spin {
    to { transform: rotate(360deg); }
}

/* --- Responsive --- */
.sidebar-toggle {
    display: none;
    background: none;
    border: none;
    font-size: 1.4rem;
    cursor: pointer;
    color: var(--text-primary);
    padding: var(--space-sm);
}

@media (max-width: 1024px) {
    .app-sidebar {
        transform: translateX(-100%);
    }
    .app-sidebar.open {
        transform: translateX(0);
    }
    .app-main {
        margin-left: 0;
    }
    .sidebar-toggle {
        display: block;
    }
    .survey-field {
        flex-direction: column;
    }
    .survey-field-input {
        flex: none;
        width: 100%;
    }
}

@media (max-width: 640px) {
    .app-content {
        padding: var(--space-md);
    }
    .stats-grid {
        grid-template-columns: 1fr;
    }
    .form-row {
        flex-direction: column;
    }
    .form-row .form-group {
        min-width: 100%;
    }
    .btn-group {
        flex-direction: column;
    }
}

/* --- Print --- */
@media print {
    .app-sidebar, .app-header, .btn, .sidebar-toggle {
        display: none !important;
    }
    .app-main {
        margin-left: 0;
    }
    .card {
        box-shadow: none;
        border: 1px solid #ddd;
    }
}