:root {
    --bg-primary: #0a192f;
    --bg-secondary: #112240;
    --bg-tertiary: #233554;
    --text-primary: #ccd6f6;
    --text-secondary: #8892b0;
    --accent-blue: #3b82f6;
    --accent-blue-hover: #2563eb;
    --accent-danger: #ef4444;
    --accent-danger-hover: #dc2626;
    --glass-bg: rgba(17, 34, 64, 0.7);
    --glass-border: rgba(255, 255, 255, 0.1);
    --shadow: 0 10px 30px -15px rgba(2, 12, 27, 0.7);
    --transition: all 0.25s cubic-bezier(0.645, 0.045, 0.355, 1);
    --border-radius: 8px;
    --font-sans: 'Inter', system-ui, -apple-system, sans-serif;
}

body[data-theme="light"] {
    --bg-primary: #f8fafc;
    --bg-secondary: #ffffff;
    --bg-tertiary: #f1f5f9;
    --text-primary: #0f172a;
    --text-secondary: #475569;
    --accent-blue: #2563eb;
    --accent-blue-hover: #1d4ed8;
    --glass-bg: rgba(255, 255, 255, 0.8);
    --glass-border: rgba(0, 0, 0, 0.1);
    --shadow: 0 10px 30px -15px rgba(0, 0, 0, 0.1);
}

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

body {
    font-family: var(--font-sans);
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

/* Typography */
h1, h2, h3, h4 { color: var(--text-primary); font-weight: 600; }
a { color: var(--accent-blue); text-decoration: none; transition: var(--transition); }
a:hover { color: var(--accent-blue-hover); }

/* Header & Nav */
.app-header {
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--glass-border);
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid var(--glass-border);
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
}
.icon {
    width: 24px;
    height: 24px;
}

.burger-btn {
    display: none;
    background: none;
    border: none;
    color: var(--text-primary);
    cursor: pointer;
    padding: 0.5rem;
}
.burger-btn svg {
    width: 28px;
    height: 28px;
}

.main-nav {
    display: flex;
    gap: 1rem;
}
.nav-btn {
    background: transparent;
    border: none;
    color: var(--text-secondary);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.25rem;
    font-size: 0.85rem;
    cursor: pointer;
    transition: var(--transition);
    padding: 0.5rem;
    border-radius: var(--border-radius);
}
.nav-btn:hover, .nav-btn.active {
    color: var(--accent-blue);
    background: rgba(59, 130, 246, 0.1);
}

/* Content Area */
.app-content {
    flex: 1;
    padding: 2rem;
    position: relative;
}

.view {
    display: none;
    animation: fadeIn 0.3s ease;
}
.view.active {
    display: block;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Stats */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1.5rem;
    margin-top: 2rem;
}
.stat-card {
    background: var(--bg-secondary);
    padding: 1.5rem;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    border: 1px solid var(--glass-border);
    text-align: center;
    cursor: pointer;
    transition: var(--transition);
}
.stat-card:hover {
    transform: translateY(-5px);
    border-color: var(--accent-blue);
}
.stat-card h3 { color: var(--text-secondary); font-size: 1rem; margin-bottom: 0.5rem;}
.stat-card p { font-size: 2.5rem; font-weight: 700; color: var(--accent-blue); }

/* Utility */
.view-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
}
.actions {
    display: flex;
    gap: 0.5rem;
}
.btn {
    padding: 0.5rem 1rem;
    border-radius: var(--border-radius);
    border: none;
    cursor: pointer;
    font-weight: 500;
    transition: var(--transition);
    font-size: 0.9rem;
}
.btn-primary { background: var(--accent-blue); color: #fff; }
.btn-primary:hover { background: var(--accent-blue-hover); }
.btn-secondary { background: var(--bg-tertiary); color: var(--text-primary); border: 1px solid var(--glass-border); }
.btn-secondary:hover { background: var(--glass-bg); }
.btn-danger { background: var(--accent-danger); color: #fff; }
.btn-danger:hover { background: var(--accent-danger-hover); }

/* Search Bar */
.search-bar {
    display: flex;
    gap: 1rem;
    margin-bottom: 1.5rem;
}
.search-bar input, .search-bar select, textarea, .form-input {
    background: var(--bg-secondary);
    border: 1px solid var(--glass-border);
    color: var(--text-primary);
    padding: 0.75rem 1rem;
    border-radius: var(--border-radius);
    outline: none;
    font-family: inherit;
    width: 100%;
}
.search-bar input:focus, .search-bar select:focus, textarea:focus, .form-input:focus {
    border-color: var(--accent-blue);
    box-shadow: 0 0 0 2px rgba(59, 130, 246, 0.2);
}

/* Grid Lists */
.grid-list {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 1.5rem;
}
.card {
    background: var(--bg-secondary);
    border: 1px solid var(--glass-border);
    border-radius: var(--border-radius);
    padding: 1.5rem;
    box-shadow: var(--shadow);
    transition: var(--transition);
    cursor: pointer;
    display: flex;
    flex-direction: column;
}
.card:hover {
    transform: translateY(-5px);
    border-color: var(--accent-blue);
}
.card-title {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}
.card-subtitle {
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin-bottom: 1rem;
}
.tags-container {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-top: auto;
}
.tag {
    background: var(--bg-tertiary);
    color: var(--accent-blue);
    padding: 0.2rem 0.5rem;
    border-radius: 4px;
    font-size: 0.75rem;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
}
.tag:hover {
    background: var(--accent-blue);
    color: #fff;
}

/* Detail View */
.detail-content {
    background: var(--bg-secondary);
    border: 1px solid var(--glass-border);
    border-radius: var(--border-radius);
    padding: 2rem;
    margin-bottom: 1.5rem;
}
.detail-content h2 {
    font-size: 2rem;
    margin-bottom: 0.5rem;
    color: var(--accent-blue);
}
.detail-meta {
    margin-top: 1rem;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
}
.meta-item {
    display: flex;
    flex-direction: column;
}
.meta-label {
    font-size: 0.8rem;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}
.meta-value {
    font-size: 1.1rem;
}

/* Collapsibles */
.collapsible {
    margin-bottom: 1rem;
    border: 1px solid var(--glass-border);
    border-radius: var(--border-radius);
    overflow: hidden;
}
.collapsible-btn {
    width: 100%;
    background: var(--bg-secondary);
    color: var(--text-primary);
    border: none;
    padding: 1rem;
    text-align: left;
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: var(--transition);
}
.collapsible-btn:hover {
    background: var(--bg-tertiary);
}
.collapsible-btn .arrow {
    transition: transform 0.3s ease;
}
.collapsible-btn.active .arrow {
    transform: rotate(180deg);
}
.collapsible-content {
    background: var(--bg-primary);
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease, padding 0.3s ease;
    padding: 0 1rem;
}
.collapsible-content.active {
    max-height: 1000px;
    padding: 1rem;
}

/* Form /* Modals */
.modal-overlay {
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    background: rgba(0,0,0,0.7);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s;
    z-index: 1000;
}
.modal-overlay.active {
    opacity: 1;
    pointer-events: auto;
}
.modal-content {
    background: var(--bg-secondary);
    border-radius: 8px;
    width: 90%;
    max-width: 600px;
    max-height: 90vh;
    overflow-y: auto;
    border: 1px solid var(--glass-border);
}
.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 1.5rem;
    border-bottom: 1px solid var(--glass-border);
}
#modal-body {
    padding: 1.5rem;
}
.btn-close {
    background: none;
    border: none;
    color: var(--text-primary);
    font-size: 1.2rem;
    cursor: pointer;
}
.btn-close:hover { color: var(--accent-danger); }
.modal-body {
    padding: 1.5rem;
}

.form-group {
    margin-bottom: 1.5rem;
}
.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    color: var(--text-secondary);
    font-size: 0.9rem;
}
.form-input {
    margin-top: 0.25rem;
}
.form-actions {
    margin-top: 1.5rem;
    display: flex;
    justify-content: flex-end;
    gap: 1rem;
}

/* IO Section */
.io-container {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2rem;
}
@media (min-width: 768px) {
    .io-container { grid-template-columns: 1fr 1fr; }
}
.io-card {
    background: var(--bg-secondary);
    padding: 1.5rem;
    border-radius: var(--border-radius);
    border: 1px solid var(--glass-border);
}
.io-card h3 { margin-bottom: 1rem; color: var(--accent-blue); }
.io-card p { margin-bottom: 1rem; color: var(--text-secondary); font-size: 0.9rem;}
.io-card textarea { margin-bottom: 1rem; font-family: monospace; font-size: 0.8rem; resize: vertical;}
.io-card button { margin-right: 0.5rem; margin-bottom: 0.5rem; }
.io-card input[type="file"] { margin-bottom: 1rem; width: 100%; color: var(--text-primary); }

/* Footer */
.app-footer {
    background: var(--bg-secondary);
    border-top: 1px solid var(--glass-border);
    padding: 1rem 2rem;
    text-align: center;
    font-size: 0.85rem;
    color: var(--text-secondary);
    z-index: 10;
    position: sticky;
    bottom: 0;
}
.app-footer .footer-text {
    cursor: pointer;
}
.app-footer .footer-text:hover {
    color: var(--text-primary);
}
.footer-collapsible {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease, padding 0.3s ease;
}
.footer-collapsible.active {
    max-height: 200px;
    padding-top: 1rem;
}

/* Responsive adjustments */
@media (max-width: 768px) {
    .app-header {
        flex-wrap: wrap;
        padding: 1rem;
        flex-direction: row;
        justify-content: space-between;
    }
    .burger-btn {
        display: block;
    }
    .main-nav {
        display: none;
        width: 100%;
        flex-direction: column;
        gap: 0.5rem;
        margin-top: 1rem;
    }
    .main-nav.open {
        display: flex;
    }
    .nav-btn {
        width: 100%;
        justify-content: center;
    }
    .nav-btn span {
        display: inline;
    }
    .search-bar { flex-direction: column; }
}

/* --- Major Update Additions --- */

/* Star Rating */
.star-rating {
    display: inline-flex;
    flex-direction: row;

    gap: 0.25rem;
    font-size: 1.5rem;
    cursor: pointer;
}
.star-rating .star {
    color: var(--text-secondary);
    transition: color 0.2s;
}
.star-rating .star.active {
    color: #fbbf24; /* gold */
}
.star-display {
    color: #fbbf24;
    font-size: 1rem;
    letter-spacing: 2px;
}

/* Advanced Filters */
.advanced-filters-panel {
    background: var(--bg-tertiary);
    border: 1px solid var(--glass-border);
    border-radius: var(--border-radius);
    padding: 1rem;
    margin-bottom: 1.5rem;
    display: none;
    animation: fadeIn 0.3s ease;
}
.advanced-filters-panel.active {
    display: block;
}
.filter-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 1rem;
    margin-bottom: 1rem;
}

/* Icon Buttons */
.btn-icon {
    background: none;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0.5rem;
    border-radius: 4px;
    transition: var(--transition);
}
.btn-icon:hover {
    color: var(--text-primary);
    background: var(--glass-bg);
}
.btn-icon.danger:hover {
    color: var(--accent-danger);
    background: rgba(239, 68, 68, 0.1);
}
.btn-icon.primary:hover {
    color: var(--accent-blue);
    background: rgba(59, 130, 246, 0.1);
}
.btn-icon svg {
    width: 20px;
    height: 20px;
}

/* Einordnung */
.einordnung-group {
    margin-bottom: 0.75rem;
}
.einordnung-category {
    font-weight: 600;
    color: var(--accent-blue);
    margin-bottom: 0.25rem;
    font-size: 0.9rem;
}

/* Candidate Section */
.candidate-section {
    background: linear-gradient(135deg, var(--bg-tertiary), var(--bg-secondary));
    border: 1px dashed var(--accent-blue);
    border-radius: var(--border-radius);
    padding: 1.5rem;
    margin-top: 2rem;
    text-align: center;
}
.candidate-section h3 {
    margin-bottom: 1rem;
}

/* Statistics Bar Charts */
.stats-container {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2rem;
    margin-top: 1.5rem;
}
@media (min-width: 768px) {
    .stats-container { grid-template-columns: 1fr 1fr; }
}
.chart-card {
    background: var(--bg-secondary);
    border: 1px solid var(--glass-border);
    border-radius: var(--border-radius);
    padding: 1.5rem;
}
.chart-card h3 {
    margin-bottom: 1.5rem;
    color: var(--accent-blue);
    border-bottom: 1px solid var(--glass-border);
    padding-bottom: 0.5rem;
}
.bar-row {
    display: flex;
    align-items: center;
    margin-bottom: 0.75rem;
}
.bar-label {
    width: 80px;
    font-size: 0.85rem;
    color: var(--text-secondary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    padding-right: 0.5rem;
}
.bar-track {
    flex: 1;
    height: 12px;
    background: var(--bg-tertiary);
    border-radius: 6px;
    overflow: hidden;
    position: relative;
}
.bar-fill {
    height: 100%;
    background: var(--accent-blue);
    border-radius: 6px;
    transition: width 0.5s ease;
}
.bar-value {
    width: 50px;
    text-align: right;
    font-size: 0.85rem;
    font-weight: 600;
    padding-left: 0.5rem;
}