:root {
    /* DER WICHTIGE FIX FÜR DUNKLE DROPDOWNS: */
    color-scheme: dark; 
    
    --bg-color: #121212;
    --glass-bg: rgba(255, 255, 255, 0.08);
    --glass-border: rgba(255, 255, 255, 0.1);
    --text-color: #e0e0e0;
    --accent-color: #00d2ff; /* Neon Blau */
    --success-color: #00ff88; /* Neon Grün */
    --danger-color: #ff4b4b;  /* Rot */
}

body {
    background-color: var(--bg-color);
    color: var(--text-color);
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    margin: 0;
    padding: 0;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

/* =========================================
   LAYOUT & CONTAINER
   ========================================= */
.container {
    width: 100%;
    max-width: 600px;
    margin: 0 auto;
    padding: 20px;
    box-sizing: border-box;
}

/* Glass Cards */
.card {
    background: var(--glass-bg);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--glass-border);
    border-radius: 16px;
    padding: 20px;
    margin-bottom: 20px;
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.5);
}

h1, h2, h3 { margin-top: 0; font-weight: 600; }
h1 { color: var(--accent-color); text-align: center; }
h2 { font-size: 1.5em; }
h3 { font-size: 1.2em; margin-bottom: 15px; }

/* =========================================
   BUTTONS
   ========================================= */
.btn {
    display: block;
    width: 100%;
    padding: 15px;
    margin: 10px 0;
    border: none;
    border-radius: 12px;
    font-size: 16px;
    font-weight: bold;
    text-align: center;
    cursor: pointer;
    text-decoration: none;
    transition: transform 0.1s, opacity 0.2s;
    color: #000;
    box-sizing: border-box;
}
.btn:active { transform: scale(0.98); }
.btn:hover { opacity: 0.9; }

.btn-primary { background: var(--accent-color); color: #000; }
.btn-success { background: var(--success-color); color: #000; }
.btn-danger { background: var(--danger-color); color: #fff; }

.btn-logout { 
    background: rgba(255,255,255,0.1); 
    color: #fff; 
    border: 1px solid rgba(255,255,255,0.2); 
    display: inline-block;
    padding: 8px 16px;
    border-radius: 8px;
    text-decoration: none;
    font-size: 0.9em;
    transition: background 0.2s;
}
.btn-logout:hover { background: rgba(255,255,255,0.2); }

/* =========================================
   FORMULARE & INPUTS
   ========================================= */
label {
    display: block;
    margin-bottom: 5px;
    font-size: 0.9em;
    opacity: 0.8;
    margin-top: 15px;
}

input, select, textarea {
    width: 100%;
    padding: 15px;
    margin-bottom: 10px;
    border-radius: 12px;
    border: 1px solid var(--glass-border);
    background: rgba(0,0,0,0.3);
    color: #fff;
    font-size: 16px;
    box-sizing: border-box;
    outline: none;
    font-family: inherit;
}

input:focus, select:focus {
    border-color: var(--accent-color);
    background: rgba(0,0,0,0.5);
}

/* FIX: Dropdown Menüs (Select) */
select {
    appearance: none;
    -webkit-appearance: none;
    -moz-appearance: none;
    cursor: pointer;
    background-image: url('data:image/svg+xml;charset=US-ASCII,%3Csvg%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%20width%3D%22292.4%22%20height%3D%22292.4%22%3E%3Cpath%20fill%3D%22%2300d2ff%22%20d%3D%22M287%2069.4a17.6%2017.6%200%200%200-13-5.4H18.4c-5%200-9.3%201.8-12.9%205.4A17.6%2017.6%200%200%200%200%2082.2c0%205%201.8%209.3%205.4%2012.9l128%20127.9c3.6%203.6%207.8%205.4%2012.8%205.4s9.2-1.8%2012.8-5.4L287%2095c3.5-3.5%205.4-7.8%205.4-12.8%200-5-1.9-9.2-5.5-12.8z%22%2F%3E%3C%2Fsvg%3E');
    background-repeat: no-repeat;
    background-position: right 1em top 50%;
    background-size: .65em auto;
    padding-right: 2.5em; 
}

select option {
    background-color: #121212;
    color: #fff;
}

/* =========================================
   DASHBOARD GRID
   ========================================= */
.grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 15px;
}

.tile {
    background: rgba(255,255,255,0.05);
    padding: 20px;
    border-radius: 12px;
    text-align: center;
    border: 1px solid var(--glass-border);
    color: #fff;
    text-decoration: none;
    font-size: 14px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    transition: background 0.2s, border-color 0.2s;
    min-height: 100px;
}
.tile:hover {
    background: rgba(255,255,255,0.1);
    border-color: var(--accent-color);
}
.tile strong {
    display: block;
    font-size: 24px;
    margin-bottom: 8px;
    color: var(--accent-color);
}

/* =========================================
   HELPER & ALERTS
   ========================================= */
.alert {
    background: rgba(255, 75, 75, 0.15);
    border: 1px solid var(--danger-color);
    color: #ffcccc;
    padding: 15px;
    border-radius: 12px;
    text-align: center;
    margin-bottom: 20px;
}
table td { vertical-align: middle; }
a { color: var(--accent-color); }