/* ============ CSS-VARIABLEN ============ */
:root {
    /* Light Mode */
    --bg-primary: #f0f2f5;
    --bg-secondary: #ffffff;
    --bg-card: #ffffff;
    --bg-input: #ffffff;
    --bg-hover: #f8f9fa;
    --text-primary: #333333;
    --text-secondary: #666666;
    --text-muted: #999999;
    --border-color: #dee2e6;
    --shadow: 0 2px 10px rgba(0,0,0,0.1);
    --shadow-hover: 0 4px 20px rgba(0,0,0,0.15);
    --gradient-start: #667eea;
    --gradient-end: #764ba2;
    --table-stripe: #f8f9fa;
    --modal-overlay: rgba(0,0,0,0.5);
    --status-gruen-bg: #d4edda;
    --status-gruen-text: #155724;
    --status-gelb-bg: #fff3cd;
    --status-gelb-text: #856404;
    --status-rot-bg: #f8d7da;
    --status-rot-text: #721c24;
    --scrollbar-track: #f1f1f1;
    --scrollbar-thumb: #c1c1c1;
    --captcha-bg: #f8f9fa;
    --captcha-text: #333;
    --success-bg: #d4edda;
    --success-text: #155724;
}

[data-theme="dark"] {
    --bg-primary: #0f0f1a;
    --bg-secondary: #1a1a2e;
    --bg-card: #1a1a2e;
    --bg-input: #2a2a4a;
    --bg-hover: #2a2a4a;
    --text-primary: #e8e8e8;
    --text-secondary: #b0b0b0;
    --text-muted: #888888;
    --border-color: #3a3a5a;
    --shadow: 0 2px 10px rgba(0,0,0,0.5);
    --shadow-hover: 0 4px 20px rgba(0,0,0,0.7);
    --gradient-start: #4a4a8a;
    --gradient-end: #6a4a8a;
    --table-stripe: #1e1e3e;
    --modal-overlay: rgba(0,0,0,0.8);
    --status-gruen-bg: #1a4a2a;
    --status-gruen-text: #8fdf9f;
    --status-gelb-bg: #4a3a0a;
    --status-gelb-text: #ffd75a;
    --status-rot-bg: #4a1a1a;
    --status-rot-text: #ff6b6b;
    --scrollbar-track: #1a1a2e;
    --scrollbar-thumb: #3a3a5a;
    --captcha-bg: #2a2a4a;
    --captcha-text: #e8e8e8;
    --success-bg: #1a4a2a;
    --success-text: #8fdf9f;
}

/* ============ ALLGEMEINE STYLES ============ */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    transition: background-color 0.3s ease, color 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    min-height: 100vh;
    padding: 20px;
    transition: background-color 0.3s ease, color 0.3s ease;
}

/* Scrollbar */
::-webkit-scrollbar {
    width: 10px;
    height: 10px;
}

::-webkit-scrollbar-track {
    background: var(--scrollbar-track);
    border-radius: 5px;
}

::-webkit-scrollbar-thumb {
    background: var(--scrollbar-thumb);
    border-radius: 5px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--gradient-start);
}

.container {
    max-width: 1400px;
    margin: 0 auto;
}

/* ============ THEME TOGGLE ============ */
.btn-theme {
    background: var(--bg-card);
    color: var(--text-primary);
    border: 2px solid var(--border-color);
    border-radius: 50%;
    width: 40px;
    height: 40px;
    cursor: pointer;
    font-size: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
}

.btn-theme:hover {
    transform: rotate(20deg) scale(1.1);
    box-shadow: var(--shadow);
}

.theme-toggle-login {
    text-align: right;
    margin-bottom: -20px;
}

.theme-toggle-login .btn-theme {
    display: inline-flex;
}

/* ============ LOGIN-BOX ============ */
.login-box {
    background: var(--bg-card);
    padding: 40px;
    border-radius: 10px;
    box-shadow: var(--shadow);
    max-width: 400px;
    margin: 100px auto;
    border: 1px solid var(--border-color);
}

.login-box h2 {
    margin-bottom: 30px;
    text-align: center;
    color: var(--text-primary);
}

/* ============ HEADER ============ */
.header {
    background: var(--bg-card);
    padding: 20px 30px;
    border-radius: 10px;
    margin-bottom: 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    box-shadow: var(--shadow);
    border: 1px solid var(--border-color);
}

.header-left {
    display: flex;
    align-items: center;
    gap: 20px;
    flex-wrap: wrap;
}

.header-left h1 {
    color: var(--text-primary);
    font-size: 24px;
}

.aktuelles-datum {
    color: var(--text-secondary);
    font-size: 14px;
    background: var(--bg-hover);
    padding: 5px 15px;
    border-radius: 20px;
    border: 1px solid var(--border-color);
}

.header-right {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-wrap: wrap;
}

.benutzer-info {
    color: var(--text-secondary);
    font-weight: 500;
}

/* ============ EINSTELLUNGEN - ZUGEKLAPPT ============ */
.einstellungen-section {
    background: var(--bg-card);
    border-radius: 10px;
    margin-bottom: 20px;
    box-shadow: var(--shadow);
    border: 1px solid var(--border-color);
    overflow: hidden;
}

.einstellungen-header {
    padding: 20px;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    user-select: none;
    transition: background 0.3s ease;
}

.einstellungen-header:hover {
    background: var(--bg-hover);
}

.einstellungen-header h3 {
    color: var(--text-primary);
    margin: 0;
}

.toggle-icon {
    font-size: 20px;
    transition: transform 0.3s ease;
    color: var(--text-secondary);
}

.toggle-icon.open {
    transform: rotate(90deg);
}

.einstellungen-body {
    padding: 0 20px 20px 20px;
    animation: slideDown 0.3s ease;
}

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

.einstellungen-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
}

.einstellung-item {
    display: flex;
    flex-direction: column;
    gap: 5px;
}

.einstellung-item label {
    font-size: 14px;
    color: var(--text-secondary);
    font-weight: 500;
}

.einstellung-item input {
    padding: 8px 12px;
    border: 1px solid var(--border-color);
    border-radius: 5px;
    font-size: 14px;
    background: var(--bg-input);
    color: var(--text-primary);
}

.einstellung-item input:focus {
    outline: none;
    border-color: var(--gradient-start);
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

/* ============ DASHBOARD ============ */
.dashboard-section {
    background: var(--bg-card);
    padding: 20px;
    border-radius: 10px;
    box-shadow: var(--shadow);
    border: 1px solid var(--border-color);
}

.dashboard-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
    flex-wrap: wrap;
    gap: 10px;
}

.dashboard-header h3 {
    color: var(--text-primary);
}

/* ============ FILTER SECTION ============ */
.filter-section {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 10px;
    margin-bottom: 20px;
    flex-wrap: wrap;
}

.filter-left {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
    flex: 1;
}

.filter-left input,
.filter-left select {
    padding: 8px 12px;
    border: 1px solid var(--border-color);
    border-radius: 5px;
    font-size: 14px;
    background: var(--bg-input);
    color: var(--text-primary);
}

.filter-left input:focus,
.filter-left select:focus {
    outline: none;
    border-color: var(--gradient-start);
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

.filter-left input {
    flex: 1;
    min-width: 200px;
}

.filter-left select option {
    background: var(--bg-card);
    color: var(--text-primary);
}

.filter-right {
    display: flex;
    align-items: center;
}

.sortier-checkbox {
    display: flex;
    align-items: center;
    gap: 8px;
    cursor: pointer;
    padding: 8px 12px;
    border-radius: 5px;
    background: var(--bg-hover);
    border: 1px solid var(--border-color);
    transition: all 0.3s ease;
    user-select: none;
    white-space: nowrap;
}

.sortier-checkbox:hover {
    background: var(--border-color);
}

.sortier-checkbox input[type="checkbox"] {
    width: 18px;
    height: 18px;
    accent-color: var(--gradient-start);
    cursor: pointer;
}

.sortier-checkbox span {
    color: var(--text-primary);
    font-size: 14px;
    font-weight: 500;
}

/* ============ TABELLE ============ */
#kundenTabelleContainer {
    overflow-x: auto;
}

.kunden-tabelle {
    width: 100%;
    border-collapse: collapse;
    margin-top: 10px;
}

.kunden-tabelle th {
    background: var(--bg-hover);
    padding: 12px;
    text-align: left;
    font-weight: 600;
    color: var(--text-primary);
    border-bottom: 2px solid var(--border-color);
}

.kunden-tabelle td {
    padding: 12px;
    border-bottom: 1px solid var(--border-color);
    color: var(--text-primary);
}

.kunden-tabelle tr:hover {
    background: var(--bg-hover);
}

.kunden-tabelle tr:nth-child(even) {
    background: var(--table-stripe);
}

.kunden-row {
    transition: background 0.3s ease;
}

/* ============ STATUS-BADGES ============ */
.status-badge {
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 600;
    display: inline-block;
    min-width: 100px;
    text-align: center;
}

.status-gruen {
    background: var(--status-gruen-bg);
    color: var(--status-gruen-text);
}

.status-gelb {
    background: var(--status-gelb-bg);
    color: var(--status-gelb-text);
}

.status-rot {
    background: var(--status-rot-bg);
    color: var(--status-rot-text);
}

.status-abgelaufen {
    background: var(--status-rot-bg);
    color: var(--status-rot-text);
    animation: blink 1s infinite;
}

@keyframes blink {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

/* Dringendkeits-Indikator */
.dringendkeits-indikator {
    display: inline-block;
    width: 10px;
    height: 10px;
    border-radius: 50%;
    margin-left: 8px;
    vertical-align: middle;
}

.dringend-hoch {
    background: #dc3545;
    box-shadow: 0 0 8px rgba(220, 53, 69, 0.5);
}

.dringend-mittel {
    background: #ffc107;
    box-shadow: 0 0 8px rgba(255, 193, 7, 0.5);
}

.dringend-niedrig {
    background: #28a745;
    box-shadow: 0 0 8px rgba(40, 167, 69, 0.5);
}

/* ============ BUTTONS ============ */
.btn-primary {
    background: linear-gradient(135deg, var(--gradient-start) 0%, var(--gradient-end) 100%);
    color: white;
    padding: 8px 20px;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    font-size: 14px;
    font-weight: 500;
    transition: all 0.3s ease;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(102, 126, 234, 0.4);
}

.btn-secondary {
    background: var(--bg-hover);
    color: var(--text-primary);
    padding: 8px 20px;
    border: 1px solid var(--border-color);
    border-radius: 5px;
    cursor: pointer;
    font-size: 14px;
    transition: all 0.3s ease;
}

.btn-secondary:hover {
    background: var(--border-color);
}

.btn-danger {
    background: #dc3545;
    color: white;
    padding: 8px 20px;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    font-size: 14px;
    transition: all 0.3s ease;
}

.btn-danger:hover {
    background: #c82333;
    transform: translateY(-2px);
}

.btn-small {
    padding: 4px 12px;
    font-size: 12px;
    margin: 0 2px;
}

/* ============ INTERVALL-GRUPPE ============ */
.intervall-group {
    display: flex;
    gap: 10px;
    align-items: center;
}

.intervall-group input {
    flex: 1;
    padding: 10px;
    border: 1px solid var(--border-color);
    border-radius: 5px;
    font-size: 14px;
    background: var(--bg-input);
    color: var(--text-primary);
}

.intervall-group select {
    padding: 10px;
    border: 1px solid var(--border-color);
    border-radius: 5px;
    font-size: 14px;
    background: var(--bg-input);
    color: var(--text-primary);
    cursor: pointer;
}

.intervall-group select:focus,
.intervall-group input:focus {
    outline: none;
    border-color: var(--gradient-start);
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

/* ============ FORMULARE ============ */
.form-group {
    margin-bottom: 15px;
}

.form-group label {
    display: block;
    margin-bottom: 5px;
    color: var(--text-primary);
    font-weight: 500;
}

.form-group input {
    width: 100%;
    padding: 10px;
    border: 1px solid var(--border-color);
    border-radius: 5px;
    font-size: 14px;
    background: var(--bg-input);
    color: var(--text-primary);
}

.form-group input:focus {
    outline: none;
    border-color: var(--gradient-start);
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

.form-group input[type="date"] {
    color-scheme: light dark;
}

/* ============ MODAL ============ */
.modal {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background: var(--modal-overlay);
    animation: fadeIn 0.3s;
}

.modal-content {
    background: var(--bg-card);
    margin: 50px auto;
    padding: 30px;
    border-radius: 10px;
    max-width: 500px;
    position: relative;
    animation: slideDown 0.3s;
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-hover);
}

.modal-close {
    position: absolute;
    right: 20px;
    top: 15px;
    font-size: 28px;
    font-weight: bold;
    color: var(--text-muted);
    cursor: pointer;
    transition: color 0.3s ease;
}

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

/* ============ LÖSCH-MODAL ============ */
.loesch-modal {
    max-width: 450px;
}

.loesch-schritte {
    margin-top: 20px;
}

.loesch-schritt {
    display: flex;
    flex-direction: column;
    gap: 15px;
    padding: 10px 0;
}

.loesch-schritt p {
    color: var(--text-primary);
    font-size: 15px;
}

.loesch-schritt .btn-danger,
.loesch-schritt .btn-secondary {
    width: 100%;
    padding: 12px;
}

.loesch-schritt .btn-danger {
    background: #dc3545;
}

.loesch-schritt .btn-danger:hover {
    background: #c82333;
}

/* ============ CAPTCHA ============ */
.captcha-box {
    display: flex;
    flex-direction: column;
    gap: 10px;
    align-items: center;
    padding: 15px;
    background: var(--captcha-bg);
    border-radius: 8px;
    border: 1px solid var(--border-color);
}

.captcha-code {
    font-size: 32px;
    font-weight: bold;
    letter-spacing: 8px;
    color: var(--captcha-text);
    font-family: 'Courier New', monospace;
    padding: 10px 20px;
    background: var(--bg-card);
    border-radius: 5px;
    border: 2px dashed var(--border-color);
    user-select: none;
}

.captcha-box input {
    width: 150px;
    text-align: center;
    padding: 10px;
    font-size: 20px;
    letter-spacing: 4px;
    border: 2px solid var(--border-color);
    border-radius: 5px;
    background: var(--bg-input);
    color: var(--text-primary);
    text-transform: uppercase;
}

.captcha-box input:focus {
    outline: none;
    border-color: var(--gradient-start);
}

/* ============ ANIMATIONEN ============ */
@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes slideDown {
    from {
        transform: translateY(-50px);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

/* ============ FEHLERMELDUNGEN ============ */
.fehler-meldung {
    color: #dc3545;
    margin-top: 10px;
    font-size: 14px;
}

/* ============ COOKIE-BANNER ============ */
.cookie-banner {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: var(--bg-card);
    color: var(--text-primary);
    padding: 20px;
    box-shadow: 0 -4px 20px rgba(0,0,0,0.2);
    z-index: 9999;
    border-top: 3px solid var(--gradient-start);
    animation: slideUp 0.5s ease;
}

@keyframes slideUp {
    from {
        transform: translateY(100%);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

.cookie-banner-content {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.cookie-banner-text h3 {
    margin-bottom: 8px;
    color: var(--text-primary);
}

.cookie-banner-text p {
    color: var(--text-secondary);
    font-size: 14px;
    line-height: 1.6;
}

.cookie-banner-options {
    display: flex;
    gap: 20px;
    flex-wrap: wrap;
    padding: 10px 0;
}

.cookie-option {
    display: flex;
    align-items: center;
    gap: 8px;
}

.cookie-option input[type="radio"] {
    accent-color: var(--gradient-start);
    width: 18px;
    height: 18px;
    cursor: pointer;
}

.cookie-option label {
    cursor: pointer;
    color: var(--text-primary);
    font-weight: 500;
}

.cookie-banner-buttons {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}

/* ============ TOAST ============ */
.toast {
    position: fixed;
    bottom: 20px;
    right: 20px;
    background: var(--bg-card);
    color: var(--text-primary);
    padding: 15px 25px;
    border-radius: 8px;
    box-shadow: var(--shadow-hover);
    border: 1px solid var(--border-color);
    z-index: 9999;
    animation: slideUp 0.5s ease;
    max-width: 350px;
}

/* ============ RESPONSIVE ============ */
@media (max-width: 768px) {
    body {
        padding: 10px;
    }
    
    .header {
        flex-direction: column;
        gap: 15px;
        padding: 15px;
    }
    
    .header-left {
        flex-direction: column;
        text-align: center;
        width: 100%;
    }
    
    .header-right {
        flex-direction: column;
        width: 100%;
    }
    
    .header-right button,
    .header-right .btn-theme {
        width: 100%;
    }
    
    .kunden-tabelle {
        font-size: 12px;
    }
    
    .kunden-tabelle th,
    .kunden-tabelle td {
        padding: 8px;
    }
    
    .einstellungen-grid {
        grid-template-columns: 1fr;
    }
    
    .modal-content {
        margin: 20px;
        padding: 20px;
    }
    
    .login-box {
        margin: 50px 20px;
        padding: 30px 20px;
    }
    
    .dashboard-header {
        flex-direction: column;
        align-items: stretch;
    }
    
    .filter-section {
        flex-direction: column;
        align-items: stretch;
    }
    
    .filter-left {
        flex-direction: column;
    }
    
    .filter-left input {
        min-width: auto;
    }
    
    .filter-right {
        justify-content: stretch;
    }
    
    .sortier-checkbox {
        justify-content: center;
        width: 100%;
    }
    
    .intervall-group {
        flex-direction: column;
    }
    
    .intervall-group select {
        width: 100%;
    }
    
    .cookie-banner-options {
        flex-direction: column;
        gap: 10px;
    }
    
    .cookie-banner-buttons {
        flex-direction: column;
    }
    
    .cookie-banner-buttons button {
        width: 100%;
    }
    
    .loesch-modal {
        margin: 10px;
        padding: 15px;
    }
}

@media (max-width: 480px) {
    .header-left h1 {
        font-size: 18px;
    }
    
    .aktuelles-datum {
        font-size: 12px;
    }
    
    .kunden-tabelle {
        font-size: 11px;
    }
    
    .kunden-tabelle th,
    .kunden-tabelle td {
        padding: 6px;
    }
    
    .btn-small {
        font-size: 10px;
        padding: 2px 8px;
    }
    
    .captcha-code {
        font-size: 24px;
        letter-spacing: 6px;
    }
}