:root {
    --bg-dark: #0b0f19;
    --bg-card: rgba(17, 24, 39, 0.75);
    --bg-card-hover: rgba(31, 41, 55, 0.85);
    --border-glass: rgba(255, 255, 255, 0.08);
    --border-highlight: rgba(255, 255, 255, 0.2);
    
    --text-primary: #f9fafb;
    --text-secondary: #9ca3af;
    --text-muted: #6b7280;
    
    --color-primary: #6366f1;
    --color-primary-hover: #4f46e5;
    --color-accent: #8b5cf6;
    
    /* Vokabel-Status Farben */
    --color-new-bg: rgba(56, 189, 248, 0.18);
    --color-new-border: #38bdf8;
    --color-new-text: #e0f2fe;
    
    --color-learning-bg: rgba(245, 158, 11, 0.25);
    --color-learning-border: #f59e0b;
    --color-learning-text: #fef3c7;
    
    --color-known-bg: transparent;
    --color-known-border: transparent;
    --color-known-text: #f3f4f6;

    --color-ignore-text: #4b5563;

    --shadow-glass: 0 8px 32px 0 rgba(0, 0, 0, 0.37);
    --radius-lg: 16px;
    --radius-md: 10px;
    --radius-sm: 6px;
    --transition-smooth: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

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

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--bg-dark);
    color: var(--text-primary);
    min-height: 100vh;
    overflow-x: hidden;
    position: relative;
}

h1, h2, h3, h4 {
    font-family: 'Outfit', sans-serif;
    font-weight: 700;
}

/* Ambient Hintergrund Glows */
.bg-glow {
    position: fixed;
    width: 600px;
    height: 600px;
    border-radius: 50%;
    filter: blur(140px);
    z-index: -1;
    opacity: 0.35;
    pointer-events: none;
    animation: floatGlow 20s infinite alternate ease-in-out;
}
.bg-glow-1 {
    top: -150px;
    left: -150px;
    background: radial-gradient(circle, var(--color-primary) 0%, transparent 70%);
}
.bg-glow-2 {
    bottom: -150px;
    right: -150px;
    background: radial-gradient(circle, var(--color-accent) 0%, transparent 70%);
}

@keyframes floatGlow {
    0% { transform: translate(0, 0) scale(1); }
    50% { transform: translate(100px, 80px) scale(1.15); }
    100% { transform: translate(-50px, 40px) scale(0.95); }
}

.app-container {
    max-width: 1440px;
    margin: 0 auto;
    padding: 20px;
    display: flex;
    flex-direction: column;
    gap: 24px;
    min-height: 100vh;
}

/* Glassmorphism Klassen */
.glass-header, .glass-card, .glass-modal {
    background: var(--bg-card);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid var(--border-glass);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-glass);
}

/* Header */
.glass-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px 28px;
    position: sticky;
    top: 20px;
    z-index: 100;
}

.logo-area {
    display: flex;
    align-items: center;
    gap: 12px;
}
.logo-icon {
    font-size: 28px;
    filter: drop-shadow(0 0 10px var(--color-primary));
}
.logo-area h1 {
    font-size: 26px;
    letter-spacing: -0.5px;
}
.logo-area .highlight {
    color: var(--color-new-border);
    text-shadow: 0 0 12px rgba(56, 189, 248, 0.5);
}
.badge {
    background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
    font-size: 11px;
    font-weight: 700;
    padding: 3px 8px;
    border-radius: 12px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* Navigation Tabs */
.nav-tabs {
    display: flex;
    background: rgba(0, 0, 0, 0.3);
    padding: 4px;
    border-radius: 12px;
    border: 1px solid rgba(255, 255, 255, 0.05);
}
.nav-btn {
    background: transparent;
    border: none;
    color: var(--text-secondary);
    padding: 10px 20px;
    font-family: 'Inter', sans-serif;
    font-weight: 500;
    font-size: 14px;
    border-radius: 8px;
    cursor: pointer;
    transition: var(--transition-smooth);
    display: flex;
    align-items: center;
    gap: 8px;
}
.nav-btn:hover {
    color: var(--text-primary);
    background: rgba(255, 255, 255, 0.05);
}
.nav-btn.active {
    background: linear-gradient(135deg, var(--color-primary), rgba(99, 102, 241, 0.8));
    color: #fff;
    box-shadow: 0 4px 15px rgba(99, 102, 241, 0.4);
}

/* Header Actions / Push Button */
.header-actions {
    display: flex;
    gap: 10px;
}
.push-btn, .glass-btn {
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid var(--border-glass);
    color: var(--text-primary);
    padding: 8px 16px;
    border-radius: var(--radius-sm);
    font-size: 13px;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition-smooth);
    display: flex;
    align-items: center;
    gap: 8px;
}
.push-btn:hover, .glass-btn:hover {
    background: rgba(255, 255, 255, 0.12);
    border-color: var(--border-highlight);
    transform: translateY(-1px);
}
.push-btn.active-push {
    border-color: #10b981;
    background: rgba(16, 185, 129, 0.15);
    color: #34d399;
}
.test-btn {
    border-color: #38bdf8;
    background: rgba(56, 189, 248, 0.15);
    color: #38bdf8;
}

/* Main Content Layout */
.main-content {
    flex: 1;
    display: flex;
    flex-direction: column;
}
.tab-content {
    display: none;
    animation: fadeIn 0.3s ease-out;
}
.tab-content.active {
    display: flex;
    gap: 24px;
}
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(6px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Sidebar Leseansicht */
.sidebar {
    width: 300px;
    flex-shrink: 0;
    display: flex;
    flex-direction: column;
    padding: 20px;
    max-height: calc(100vh - 120px);
}
.sidebar-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 16px;
    padding-bottom: 12px;
    border-bottom: 1px solid var(--border-glass);
}
.icon-btn {
    background: transparent;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    font-size: 16px;
    transition: var(--transition-smooth);
}
.icon-btn:hover {
    color: var(--text-primary);
    transform: rotate(45deg);
}
.text-list {
    list-style: none;
    overflow-y: auto;
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 8px;
    padding-right: 4px;
}
.text-list::-webkit-scrollbar {
    width: 6px;
}
.text-list::-webkit-scrollbar-thumb {
    background: rgba(255, 255, 255, 0.1);
    border-radius: 4px;
}
.text-item {
    padding: 12px 14px;
    border-radius: var(--radius-sm);
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid transparent;
    cursor: pointer;
    transition: var(--transition-smooth);
}
.text-item:hover {
    background: rgba(255, 255, 255, 0.07);
    border-color: rgba(255, 255, 255, 0.1);
}
.text-item.active {
    background: rgba(99, 102, 241, 0.2);
    border-color: var(--color-primary);
    box-shadow: 0 0 15px rgba(99, 102, 241, 0.2);
}
.text-item h4 {
    font-size: 15px;
    font-weight: 600;
    margin-bottom: 4px;
    color: var(--text-primary);
}
.text-item span {
    font-size: 12px;
    color: var(--text-muted);
}

.sidebar-footer {
    margin-top: 16px;
    padding-top: 16px;
    border-top: 1px solid var(--border-glass);
}
.legend {
    display: flex;
    justify-content: space-around;
    font-size: 12px;
    color: var(--text-secondary);
}
.legend-item {
    display: flex;
    align-items: center;
    gap: 6px;
}
.dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    display: inline-block;
}
.dot-new { background-color: var(--color-new-border); box-shadow: 0 0 8px var(--color-new-border); }
.dot-learning { background-color: var(--color-learning-border); box-shadow: 0 0 8px var(--color-learning-border); }
.dot-known { background-color: #10b981; }

/* Lese-Bereich */
.reading-area {
    flex: 1;
    padding: 32px 40px;
    display: flex;
    flex-direction: column;
    overflow-y: auto;
    max-height: calc(100vh - 120px);
}
.reading-header {
    border-bottom: 1px solid var(--border-glass);
    padding-bottom: 20px;
    margin-bottom: 24px;
}
.text-meta {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 6px;
}
.text-meta h2 {
    font-size: 28px;
    color: var(--text-primary);
}
.lang-badge {
    background: rgba(56, 189, 248, 0.2);
    color: #38bdf8;
    border: 1px solid rgba(56, 189, 248, 0.4);
    font-size: 12px;
    font-weight: 700;
    padding: 2px 8px;
    border-radius: 6px;
}
.date-text {
    color: var(--text-muted);
    font-size: 13px;
}

/* Interaktiver Text-Container & Word Spans */
.text-content-container {
    font-size: 20px;
    line-height: 2.1;
    letter-spacing: 0.3px;
    color: var(--text-primary);
    white-space: pre-wrap;
    word-break: break-word;
}
.word {
    display: inline-block;
    padding: 1px 4px;
    margin: 2px 1px;
    border-radius: 4px;
    cursor: pointer;
    transition: var(--transition-smooth);
    font-weight: 500;
}
.word:hover {
    transform: scale(1.06);
    filter: brightness(1.2);
    z-index: 10;
}

/* Wort Zustände */
.word.status-new {
    background-color: var(--color-new-bg);
    border-bottom: 2px solid var(--color-new-border);
    color: var(--color-new-text);
}
.word.status-1 {
    background-color: var(--color-learning-bg);
    border-bottom: 2px solid var(--color-learning-border);
    color: var(--color-learning-text);
    box-shadow: 0 0 10px rgba(245, 158, 11, 0.15);
}
.word.status-2 {
    background-color: var(--color-known-bg);
    border-bottom: 1px solid transparent;
    color: var(--color-known-text);
}
.word.status-0 {
    color: var(--color-ignore-text);
    text-decoration: line-through;
    opacity: 0.6;
}

.punct {
    color: var(--text-secondary);
    margin-right: 3px;
    user-select: none;
}

/* Empty State */
.empty-state {
    text-align: center;
    padding: 60px 20px;
    color: var(--text-secondary);
}
.empty-icon {
    font-size: 48px;
    margin-bottom: 16px;
}

/* Vokabel Übersicht Tabelle */
.vocab-container {
    width: 100%;
    padding: 28px;
}
.vocab-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 24px;
    flex-wrap: wrap;
    gap: 16px;
}
.vocab-filters {
    display: flex;
    gap: 8px;
}
.filter-btn {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border-glass);
    color: var(--text-secondary);
    padding: 6px 14px;
    border-radius: var(--radius-sm);
    font-size: 13px;
    cursor: pointer;
    transition: var(--transition-smooth);
}
.filter-btn:hover, .filter-btn.active {
    background: var(--color-primary);
    color: #fff;
    border-color: var(--color-primary);
}
.table-responsive {
    overflow-x: auto;
}
.vocab-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 14px;
}
.vocab-table th, .vocab-table td {
    padding: 14px 16px;
    text-align: left;
    border-bottom: 1px solid var(--border-glass);
}
.vocab-table th {
    font-weight: 600;
    color: var(--text-secondary);
    text-transform: uppercase;
    font-size: 12px;
    letter-spacing: 0.5px;
}
.vocab-table tr:hover {
    background: rgba(255, 255, 255, 0.03);
}
.vocab-word {
    font-weight: 700;
    font-size: 16px;
    color: var(--color-new-border);
}
.badge-status {
    padding: 4px 10px;
    border-radius: 12px;
    font-size: 11px;
    font-weight: 600;
}
.badge-status-1 { background: rgba(245, 158, 11, 0.2); color: #fcd34d; border: 1px solid rgba(245, 158, 11, 0.4); }
.badge-status-2 { background: rgba(16, 185, 129, 0.2); color: #6ee7b7; border: 1px solid rgba(16, 185, 129, 0.4); }
.badge-status-0 { background: rgba(107, 114, 128, 0.2); color: #9ca3af; border: 1px solid rgba(107, 114, 128, 0.4); }

.action-btn-sm {
    background: transparent;
    border: 1px solid var(--border-glass);
    color: var(--text-secondary);
    padding: 4px 8px;
    border-radius: 4px;
    font-size: 12px;
    cursor: pointer;
    transition: var(--transition-smooth);
}
.action-btn-sm:hover {
    border-color: var(--border-highlight);
    color: var(--text-primary);
}

/* Neuer Text Formular */
.form-container {
    max-width: 800px;
    margin: 0 auto;
    width: 100%;
    padding: 36px;
}
.form-subtitle {
    color: var(--text-secondary);
    font-size: 14px;
    margin-bottom: 28px;
}
.form-group {
    margin-bottom: 24px;
}
.form-group label {
    display: block;
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 8px;
    color: var(--text-primary);
}
.form-group input, .form-group textarea {
    width: 100%;
    background: rgba(0, 0, 0, 0.4);
    border: 1px solid var(--border-glass);
    border-radius: var(--radius-md);
    padding: 14px 18px;
    color: var(--text-primary);
    font-family: 'Inter', sans-serif;
    font-size: 15px;
    transition: var(--transition-smooth);
}
.form-group input:focus, .form-group textarea:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.2);
}
.form-actions {
    display: flex;
    justify-content: flex-end;
    gap: 14px;
}
.btn-cancel {
    background: transparent;
    border: 1px solid var(--border-glass);
    color: var(--text-secondary);
    padding: 12px 24px;
    border-radius: var(--radius-md);
    cursor: pointer;
    font-weight: 500;
}
.glass-btn-primary {
    background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
    border: none;
    color: #fff;
    padding: 12px 28px;
    border-radius: var(--radius-md);
    cursor: pointer;
    font-weight: 600;
    font-size: 15px;
    display: flex;
    align-items: center;
    gap: 8px;
    box-shadow: 0 4px 20px rgba(99, 102, 241, 0.4);
    transition: var(--transition-smooth);
}
.glass-btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 25px rgba(99, 102, 241, 0.6);
}

/* Modal Styling */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.65);
    backdrop-filter: blur(8px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    animation: fadeIn 0.2s ease-out;
}
.modal-overlay.hidden, .hidden {
    display: none !important;
}
.modal-card {
    width: 100%;
    max-width: 520px;
    padding: 32px;
    position: relative;
    border: 1px solid rgba(255, 255, 255, 0.15);
    background: rgba(15, 23, 42, 0.9);
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.6);
    animation: scaleUp 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}
@keyframes scaleUp {
    from { transform: scale(0.9); opacity: 0; }
    to { transform: scale(1); opacity: 1; }
}
.modal-close-btn {
    position: absolute;
    top: 20px;
    right: 20px;
    background: transparent;
    border: none;
    color: var(--text-secondary);
    font-size: 28px;
    cursor: pointer;
    line-height: 1;
}
.modal-close-btn:hover {
    color: #fff;
}

/* Modal Loading Spinner */
.modal-loading {
    text-align: center;
    padding: 40px 20px;
}
.spinner {
    width: 48px;
    height: 48px;
    border: 4px solid rgba(255, 255, 255, 0.1);
    border-left-color: var(--color-primary);
    border-radius: 50%;
    margin: 0 auto 20px;
    animation: spin 1s linear infinite;
}
@keyframes spin {
    to { transform: rotate(360deg); }
}
.loading-sub {
    display: block;
    font-size: 12px;
    color: var(--text-muted);
    margin-top: 8px;
}

/* Modal Content */
.word-header {
    display: flex;
    align-items: baseline;
    gap: 12px;
    margin-bottom: 12px;
}
.word-header h3 {
    font-size: 32px;
    color: var(--color-learning-border);
    text-transform: capitalize;
}
.pos-badge {
    background: rgba(139, 92, 246, 0.2);
    color: #c4b5fd;
    border: 1px solid rgba(139, 92, 246, 0.4);
    padding: 2px 10px;
    border-radius: 12px;
    font-size: 12px;
    font-weight: 600;
}
.base-form-box {
    font-size: 14px;
    color: var(--text-secondary);
    margin-bottom: 24px;
    padding-bottom: 16px;
    border-bottom: 1px solid var(--border-glass);
}
.base-form-box strong {
    color: var(--text-primary);
}
.translation-section, .example-section {
    margin-bottom: 20px;
}
.translation-section h4, .example-section h4 {
    font-size: 12px;
    text-transform: uppercase;
    color: var(--text-secondary);
    margin-bottom: 6px;
    letter-spacing: 0.5px;
}
.translation-highlight {
    font-size: 22px;
    font-weight: 700;
    color: #fff;
}
.example-box {
    background: rgba(0, 0, 0, 0.3);
    padding: 14px;
    border-radius: var(--radius-sm);
    border-left: 3px solid var(--color-primary);
    font-style: italic;
    color: var(--text-secondary);
    font-size: 14px;
    line-height: 1.6;
}

.modal-status-actions {
    display: flex;
    gap: 10px;
    margin-top: 28px;
    padding-top: 20px;
    border-top: 1px solid var(--border-glass);
}
.status-btn {
    flex: 1;
    padding: 10px;
    border-radius: var(--radius-sm);
    font-weight: 600;
    font-size: 13px;
    cursor: pointer;
    border: 1px solid transparent;
    transition: var(--transition-smooth);
}
.btn-learning { background: rgba(245, 158, 11, 0.2); color: #fcd34d; border-color: rgba(245, 158, 11, 0.4); }
.btn-learning:hover { background: rgba(245, 158, 11, 0.35); }
.btn-known { background: rgba(16, 185, 129, 0.2); color: #6ee7b7; border-color: rgba(16, 185, 129, 0.4); }
.btn-known:hover { background: rgba(16, 185, 129, 0.35); }
.btn-ignore { background: rgba(107, 114, 128, 0.2); color: #d1d5db; border-color: rgba(107, 114, 128, 0.4); }
.btn-ignore:hover { background: rgba(107, 114, 128, 0.35); }

/* Toasts */
.toast-container {
    position: fixed;
    bottom: 24px;
    right: 24px;
    z-index: 2000;
    display: flex;
    flex-direction: column;
    gap: 10px;
}
.toast {
    background: rgba(15, 23, 42, 0.95);
    border: 1px solid var(--border-highlight);
    color: #fff;
    padding: 14px 20px;
    border-radius: var(--radius-md);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    gap: 12px;
    animation: slideInRight 0.3s ease-out;
}
@keyframes slideInRight {
    from { transform: translateX(100%); opacity: 0; }
    to { transform: translateX(0); opacity: 1; }
}

/* ============================
   SYSTEM HEALTH & NEUE FEATURES
============================ */
.system-status {
    margin-top: 12px;
    padding: 8px 12px;
    border-radius: var(--radius-sm);
    background: rgba(0, 0, 0, 0.25);
    border: 1px solid rgba(255, 255, 255, 0.05);
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 11px;
    color: var(--text-secondary);
}
.status-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    display: inline-block;
}
.status-dot.online {
    background-color: #10b981;
    box-shadow: 0 0 8px #10b981;
    animation: pulseGlow 2s infinite;
}
.status-dot.degraded {
    background-color: #f59e0b;
    box-shadow: 0 0 8px #f59e0b;
}
.status-dot.offline {
    background-color: #ef4444;
    box-shadow: 0 0 8px #ef4444;
}
@keyframes pulseGlow {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.6; transform: scale(0.9); }
}

.reading-meta-bar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-top: 6px;
    flex-wrap: wrap;
    gap: 12px;
}
.font-controls {
    display: flex;
    gap: 6px;
    background: rgba(255, 255, 255, 0.04);
    padding: 3px;
    border-radius: 6px;
    border: 1px solid var(--border-glass);
}
.font-btn {
    background: transparent;
    border: none;
    color: var(--text-secondary);
    padding: 4px 8px;
    font-size: 12px;
    font-weight: 600;
    border-radius: 4px;
    cursor: pointer;
    transition: var(--transition-smooth);
}
.font-btn:hover {
    background: rgba(255, 255, 255, 0.1);
    color: var(--text-primary);
}

.vocab-header-controls {
    display: flex;
    align-items: center;
    gap: 16px;
    flex-wrap: wrap;
}
.vocab-search-input {
    background: rgba(0, 0, 0, 0.35);
    border: 1px solid var(--border-glass);
    border-radius: var(--radius-sm);
    padding: 8px 14px;
    color: var(--text-primary);
    font-size: 13px;
    width: 220px;
    transition: var(--transition-smooth);
}
.vocab-search-input:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.2);
    width: 260px;
}

.speak-btn {
    font-size: 20px;
    margin-left: 8px;
    vertical-align: middle;
}

@media (max-width: 768px) {
    .glass-header { flex-direction: column; gap: 14px; align-items: stretch; text-align: center; }
    .nav-tabs { flex-wrap: wrap; justify-content: center; }
    .nav-btn { flex: 1 1 auto; justify-content: center; white-space: nowrap; }
    .header-actions { flex-wrap: wrap; justify-content: center; }
    .push-btn, .glass-btn { flex: 1 1 auto; justify-content: center; white-space: nowrap; }
    .tab-content.active { flex-direction: column; }
    .sidebar { width: 100%; max-height: 250px; }
    .reading-area { padding: 20px; }
    .vocab-header-controls { flex-direction: column; align-items: stretch; }
    .vocab-search-input { width: 100%; }
    .vocab-search-input:focus { width: 100%; }
    .vocab-filters { flex-wrap: wrap; justify-content: center; }
    .filter-btn { flex: 1 1 auto; }
    .modal-status-actions { flex-direction: column; }
    .form-container { padding: 20px; }
    .form-actions { flex-direction: column; }
    .btn-cancel, .glass-btn-primary { width: 100%; justify-content: center; }
    .toast-container { bottom: 10px; right: 10px; left: 10px; }
}

/* ==========================================================================
   LOGIN SCREEN
   ========================================================================== */
.login-container {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    padding: 20px;
    z-index: 1000;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background: var(--bg-dark);
}

.login-card {
    width: 100%;
    max-width: 400px;
    padding: 40px;
}

.login-card h2 {
    text-align: center;
    margin-bottom: 24px;
    font-family: 'Outfit', sans-serif;
    color: var(--text-primary);
}

.login-container.hidden {
    display: none !important;
}