:root {
    --bg-primary: #ffffff;
    --bg-secondary: #f8f9fa;
    --bg-card: #ffffff;
    --bg-card-hover: #f8f9fa;
    --accent: #0077b6;
    --accent-light: #0096c7;
    --accent-dark: #005f8a;
    --success: #198754;
    --warning: #e67e22;
    --danger: #dc3545;
    --text-primary: #212529;
    --text-secondary: #6c757d;
    --border: #dee2e6;
}

* { box-sizing: border-box; }

body {
    background: var(--bg-primary);
    color: var(--text-primary);
    font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
    min-height: 100vh;
}

/* Navbar */
.navbar {
    background: var(--accent);
    border-bottom: none;
    padding: 0.75rem 0;
}

.brand-icon {
    font-size: 1.5rem;
    color: #fff;
}

.navbar-brand span {
    font-size: 1.25rem;
    letter-spacing: 0.5px;
    color: #fff;
}

.nav-link {
    color: rgba(255,255,255,0.85) !important;
    transition: color 0.2s;
}
.nav-link:hover { color: #fff !important; }

.btn-outline-accent {
    color: var(--accent);
    border-color: var(--accent);
}
.btn-outline-accent:hover {
    background: var(--accent);
    color: #fff;
}

/* In Navbar: weißer Outline-Button */
.navbar .btn-outline-accent {
    color: #fff;
    border-color: #fff;
}
.navbar .btn-outline-accent:hover {
    background: #fff;
    color: var(--accent);
}

/* Cards */
.card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 12px;
    box-shadow: 0 1px 3px rgba(0,0,0,0.08);
    transition: box-shadow 0.2s;
}
.card:hover {
    box-shadow: 0 2px 8px rgba(0,0,0,0.12);
}
.card-header {
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border);
    font-weight: 600;
}

/* Stat cards */
.stat-card {
    padding: 1.25rem;
    border-radius: 12px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    text-align: center;
    box-shadow: 0 1px 3px rgba(0,0,0,0.08);
}
.stat-card .stat-number {
    font-size: 2rem;
    font-weight: 700;
    color: var(--accent);
}
.stat-card .stat-label {
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin-top: 0.25rem;
}
.stat-card.success .stat-number { color: var(--success); }
.stat-card.warning .stat-number { color: var(--warning); }

/* Buttons */
.btn-primary {
    background: var(--accent);
    border-color: var(--accent);
    color: #fff;
}
.btn-primary:hover {
    background: var(--accent-dark);
    border-color: var(--accent-dark);
}

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

/* Forms */
.form-control, .form-select {
    background: #fff;
    border: 1px solid var(--border);
    color: var(--text-primary);
    border-radius: 8px;
}
.form-select {
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3e%3cpath fill='none' stroke='%23343a40' stroke-linecap='round' stroke-linejoin='round' stroke-width='2' d='m2 5 6 6 6-6'/%3e%3c/svg%3e");
    background-repeat: no-repeat;
    background-position: right 0.75rem center;
    background-size: 16px 12px;
    padding-right: 2.25rem;
    -webkit-appearance: none;
    -moz-appearance: none;
    appearance: none;
}
.form-control:focus, .form-select:focus {
    background: #fff;
    border-color: var(--accent);
    color: var(--text-primary);
    box-shadow: 0 0 0 0.2rem rgba(0, 119, 182, 0.2);
}
.form-control::placeholder { color: #adb5bd; }

.form-label {
    color: var(--text-secondary);
    font-weight: 500;
    font-size: 0.9rem;
}

.form-check-input {
    background-color: #fff;
    border-color: var(--border);
}
.form-check-input:checked {
    background-color: var(--accent);
    border-color: var(--accent);
}

/* Tables */
.table { color: var(--text-primary); }
.table thead th {
    background: var(--bg-secondary);
    border-color: var(--border);
    color: var(--text-secondary);
    font-weight: 600;
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}
.table td {
    border-color: var(--border);
    vertical-align: middle;
}
.table-hover tbody tr:hover {
    background: var(--bg-secondary);
    color: var(--text-primary);
}

/* Status badges */
.badge-status {
    padding: 0.35em 0.75em;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 500;
}
.badge-offen { background: var(--warning); color: #fff; }
.badge-angefragt { background: var(--accent); color: #fff; }
.badge-bestaetigt { background: var(--success); color: #fff; }
.badge-abgelehnt { background: var(--danger); color: #fff; }
.badge-entwurf { background: #adb5bd; color: #fff; }

/* Hero */
.hero {
    text-align: center;
    padding: 4rem 0;
}
.hero h1 {
    font-size: 2.75rem;
    font-weight: 800;
    margin-bottom: 1rem;
    color: var(--text-primary);
}
.hero h1 .accent { color: var(--accent); }
.hero .lead {
    color: var(--text-secondary);
    font-size: 1.2rem;
    max-width: 600px;
    margin: 0 auto 2rem;
}

/* Feature cards */
.feature-card {
    padding: 2rem;
    text-align: center;
    border-radius: 16px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    height: 100%;
    box-shadow: 0 1px 3px rgba(0,0,0,0.08);
}
.feature-card .icon {
    font-size: 2.5rem;
    color: var(--accent);
    margin-bottom: 1rem;
}
.feature-card h5 { font-weight: 600; color: var(--text-primary); }
.feature-card p { color: var(--text-secondary); font-size: 0.95rem; }

/* Referenz-Ansicht */
.referenz-box {
    background: var(--bg-card);
    border: 2px solid var(--accent);
    border-radius: 16px;
    padding: 2rem;
    max-width: 700px;
    margin: 0 auto;
    box-shadow: 0 2px 12px rgba(0,0,0,0.08);
}
.referenz-box .ref-header {
    text-align: center;
    margin-bottom: 2rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--border);
}
.referenz-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.75rem 0;
    border-bottom: 1px solid var(--border);
}
.referenz-item:last-child { border-bottom: none; }
.referenz-item .label { color: var(--text-secondary); }
.referenz-item .value { font-weight: 600; }
.referenz-item .value.ja { color: var(--success); }
.referenz-item .value.nein { color: var(--danger); }

.ref-footer {
    margin-top: 1.5rem;
    padding-top: 1rem;
    border-top: 1px solid var(--border);
    font-size: 0.85rem;
    color: var(--text-secondary);
}

/* Alerts */
.alert { border-radius: 8px; }
.alert-success { background: #d1e7dd; color: #0f5132; border-color: #badbcc; }
.alert-danger { background: #f8d7da; color: #842029; border-color: #f5c2c7; }
.alert-warning { background: #fff3cd; color: #664d03; border-color: #ffecb5; }
.alert-info { background: #cff4fc; color: #055160; border-color: #b6effb; }

/* Link-Box */
.link-box {
    background: var(--bg-secondary);
    border: 1px dashed var(--accent);
    border-radius: 8px;
    padding: 1rem;
    word-break: break-all;
    font-family: monospace;
    font-size: 0.9rem;
    color: var(--text-primary);
}

/* Auth forms */
.auth-container {
    max-width: 480px;
    margin: 2rem auto;
}

/* Footer */
footer {
    border-top: 1px solid var(--border);
    background: var(--bg-secondary);
}
footer a { text-decoration: none; color: var(--text-secondary); }
footer a:hover { color: var(--accent) !important; }

/* Section header */
.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
}
.section-header h4 { margin: 0; font-weight: 600; }

/* Empty state */
.empty-state {
    text-align: center;
    padding: 3rem 1rem;
    color: var(--text-secondary);
}
.empty-state .icon { font-size: 3rem; opacity: 0.5; margin-bottom: 1rem; }

/* Modal */
.modal-content {
    background: #fff;
    border: 1px solid var(--border);
    color: var(--text-primary);
}
.modal-header { border-bottom-color: var(--border); }
.modal-footer { border-top-color: var(--border); }

/* text-info override for light theme */
.text-info { color: var(--accent) !important; }

/* Progress bar */
.progress {
    background: var(--bg-secondary);
    border: 1px solid var(--border);
}

/* Accordion (FAQ) */
.accordion-item {
    border-color: var(--border);
}
.accordion-button {
    background: var(--bg-card);
    color: var(--text-primary);
    font-weight: 500;
}
.accordion-button:not(.collapsed) {
    background: var(--bg-secondary);
    color: var(--accent);
    box-shadow: none;
}
.accordion-button:focus {
    box-shadow: 0 0 0 0.2rem rgba(0, 119, 182, 0.2);
    border-color: var(--accent);
}
.accordion-body {
    background: var(--bg-card);
    color: var(--text-primary);
}

/* Responsive */
@media (max-width: 768px) {
    .hero h1 { font-size: 2rem; }
    .stat-card .stat-number { font-size: 1.5rem; }
    .section-header { flex-direction: column; gap: 0.75rem; align-items: flex-start !important; }
    .section-header .d-flex { width: 100%; }
    .table-responsive { font-size: 0.9rem; }
    .referenz-box { padding: 1.25rem; }
    .hero { padding: 2rem 0; }
}

@media (max-width: 576px) {
    .hero h1 { font-size: 1.75rem; }
    .hero .lead { font-size: 1rem; }
    .feature-card { padding: 1.25rem; }
    .card-body { padding: 1rem; }
    main.container { padding-left: 0.75rem; padding-right: 0.75rem; }
}

/* Ad Slots */
.ad-slot {
    border: 2px dashed #c5d5e0;
    border-radius: 12px;
    background: var(--bg-secondary);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
    font-size: 0.85rem;
    text-align: center;
    transition: border-color 0.2s;
}
.ad-slot:hover {
    border-color: var(--accent-light);
}
.ad-slot .ad-icon {
    font-size: 1.5rem;
    opacity: 0.4;
    margin-bottom: 0.35rem;
}
.ad-slot .ad-label {
    font-weight: 500;
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    opacity: 0.6;
}
.ad-slot .ad-category {
    font-size: 0.7rem;
    opacity: 0.45;
    margin-top: 0.15rem;
}

/* Sidebar Ad (300x250) */
.ad-slot-sidebar {
    width: 300px;
    min-height: 250px;
    padding: 1.5rem;
}

/* Banner Ad (full width) */
.ad-slot-banner {
    width: 100%;
    min-height: 100px;
    padding: 1.25rem 2rem;
    flex-direction: row;
    gap: 1rem;
}
.ad-slot-banner .ad-icon {
    font-size: 2rem;
    margin-bottom: 0;
}
.ad-slot-banner .ad-text {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
}

/* Native Recommendation Ads */
.ad-slot-native {
    padding: 1.25rem;
    min-height: auto;
}
.ad-slot-native .ad-icon {
    font-size: 2rem;
    margin-bottom: 0.5rem;
    color: var(--accent);
    opacity: 0.5;
}

/* Footer Partner Bar */
.ad-partner-bar {
    border-top: 1px solid var(--border);
    background: var(--bg-secondary);
    padding: 1.25rem 0;
}
.ad-partner-bar .ad-partner-label {
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--text-secondary);
    opacity: 0.6;
    font-weight: 600;
}
.ad-partner-bar .ad-partner-slot {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0.4rem 1rem;
    border: 1px dashed #c5d5e0;
    border-radius: 6px;
    color: var(--text-secondary);
    font-size: 0.75rem;
    opacity: 0.6;
    transition: opacity 0.2s;
}
.ad-partner-bar .ad-partner-slot:hover {
    opacity: 0.85;
}

/* Dashboard with sidebar layout */
.dashboard-with-sidebar {
    display: flex;
    gap: 1.5rem;
}
.dashboard-main {
    flex: 1;
    min-width: 0;
}
.dashboard-sidebar {
    flex-shrink: 0;
    width: 300px;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

/* Responsive: hide sidebar ads on mobile */
@media (max-width: 992px) {
    .dashboard-with-sidebar {
        flex-direction: column;
    }
    .dashboard-sidebar {
        display: none;
    }
    .ad-slot-banner {
        flex-direction: column;
        text-align: center;
        padding: 1rem;
    }
    .ad-slot-banner .ad-text {
        align-items: center;
    }
}

/* PWA standalone mode */
@media (display-mode: standalone) {
    .navbar { padding-top: env(safe-area-inset-top); }
}