:root {
    /* Farb-Palette */
    --bg-main: #000000;         /* Tiefschwarz für OLED Sparmodus */
    --bg-card: #121212;         /* Etwas helleres Schwarz für Karten */
    --text-main: #e0e0e0;       /* Sanftes Weiß (blendet weniger) */
    --text-muted: #888888;
    --accent: #007bff;          /* Standard Blau */
    --success: #28a745;
    --danger: #dc3545;
    --warning: #ffc107;
    --spass-color: #e83e8c;     /* Pink für Spaß-Stationen */
    --border: #333333;
    --input-bg: #000000;
}

/* Basis-Setup */
body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    background-color: var(--bg-main);
    color: var(--text-main);
    margin: 0;
    padding: 10px;
    line-height: 1.5;
}

.card {
    background: var(--bg-card);
    max-width: 600px;
    margin: 10px auto;
    padding: 20px;
    border-radius: 15px;
    border: 1px solid var(--border);
    box-shadow: 0 4px 15px rgba(0,0,0,0.5);
}

h2 { color: var(--accent); margin-top: 0; }
.spass-title { color: var(--spass-color) !important; }

/* Formular-Elemente (Extra groß für Finger-Bedienung) */
.form-group { margin-bottom: 20px; }
label { display: block; font-weight: bold; margin-bottom: 8px; font-size: 0.9rem; color: var(--text-muted); }

select, input, textarea {
    width: 100%;
    padding: 15px;
    background: var(--input-bg);
    color: #fff;
    border: 2px solid var(--border);
    border-radius: 10px;
    font-size: 1.1rem;
    box-sizing: border-box;
}

input:focus, select:focus {
    border-color: var(--accent);
    outline: none;
}

/* Buttons */
.btn {
    display: block;
    width: 100%;
    padding: 16px;
    border: none;
    border-radius: 10px;
    font-weight: bold;
    font-size: 1.1rem;
    cursor: pointer;
    text-align: center;
    text-decoration: none;
    margin-top: 10px;
    transition: opacity 0.2s;
}

.btn:active { opacity: 0.7; transform: scale(0.98); }
.btn-save { background: var(--success); color: white; }
.btn-start { background: var(--accent); color: white; }
.btn-stop { background: var(--danger); color: white; }
.btn-spass { background: var(--spass-color); color: white; }
.btn-back { background: transparent; color: var(--text-muted); font-size: 0.9rem; border: 1px solid var(--border); }

/* Tabellen & Historie */
.history-section { margin-top: 30px; border-top: 1px solid var(--border); padding-top: 20px; }
.history-table { width: 100%; border-collapse: collapse; font-size: 0.9rem; }
.history-table th { text-align: left; color: var(--text-muted); padding: 10px; font-size: 0.75rem; text-transform: uppercase; }
.history-table td { padding: 12px 10px; border-bottom: 1px solid var(--border); }

/* Utility */
.alert { padding: 15px; border-radius: 10px; margin-bottom: 20px; text-align: center; font-weight: bold; }
.alert-success { background: rgba(40, 167, 69, 0.2); color: #28a745; border: 1px solid #28a745; }
.time-display { background: #000; padding: 15px; border-radius: 10px; border: 1px solid var(--warning); color: var(--warning); font-family: monospace; margin-bottom: 15px; text-align: center; }

/* Responsive */
@media (max-width: 480px) {
    .card { padding: 15px; border: none; box-shadow: none; }
    .btn { padding: 20px; } /* Größere Buttons auf kleinen Handys */
}
/* Ergänzung für Admin-Bereich (Light Mode) */
.admin-body {
    background: #f4f7f6;
    color: #333;
}

.admin-card {
    background: white;
    color: #333;
    border: 1px solid #ddd;
    box-shadow: 0 4px 15px rgba(0,0,0,0.05);
}

.admin-table th {
    background: #444;
    color: white;
}

.admin-table tr:nth-child(even) {
    background: #f9f9f9;
}