:root {
    /* --- LIGHT THEME (Modern Palette) --- */
    --bg-body: #f0f2f5;
    --bg-card: #ffffff;
    --text-main: #1a202c;
    --text-muted: #718096;
    --border-color: #e2e8f0;

    /* Modernes Blau */
    --primary-color: #3182ce;
    --primary-gradient: linear-gradient(135deg, #3182ce 0%, #2b6cb0 100%);

    --navbar-bg: rgba(255, 255, 255, 0.85);
    --input-bg: #f7fafc;
    --input-border: #cbd5e0;
    --input-text: #2d3748;

    --hover-row: #ebf8ff;
    --shadow-soft: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-hover: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);

    /* Farben für Light Mode (Feiertage/Wochenende) */
    --holiday-bg: #fff5f5;      /* Weiches Rot */
    --holiday-text: #c53030;    /* Dunkelrot Text */
    --sunday-bg: #edf2f7;       /* Dunkleres Grau */
    --saturday-bg: #f7fafc;     /* Helles Grau */

    --header-height: 70px;
}

[data-theme="dark"] {
    /* --- DARK THEME --- */
    --bg-body: #0f172a;
    --bg-card: #1e293b;
    --text-main: #f1f5f9;
    --text-muted: #94a3b8;
    --border-color: #334155;

    --primary-color: #60a5fa;
    --primary-gradient: linear-gradient(135deg, #60a5fa 0%, #3b82f6 100%);

    --navbar-bg: rgba(30, 41, 59, 0.85);
    --input-bg: #0f172a;
    --input-border: #334155;
    --input-text: #e2e8f0;

    --hover-row: #1e3a8a;
    --shadow-soft: 0 4px 6px -1px rgba(0, 0, 0, 0.5);
    --shadow-hover: 0 10px 15px -3px rgba(0, 0, 0, 0.6);

    /* Farben für Dark Mode */
    --holiday-bg: #451a1a;
    --holiday-text: #feb2b2;
    --sunday-bg: #2d3748;
    --saturday-bg: #1a202c;
}

/* --- BOOTSTRAP OVERRIDES --- */
[data-theme="dark"] .bg-light { background-color: var(--input-bg) !important; color: var(--text-main) !important; border-color: var(--border-color) !important; }
[data-theme="dark"] .border { border-color: var(--border-color) !important; }
[data-theme="dark"] ::-webkit-calendar-picker-indicator { filter: invert(1); }

/* --- GLOBAL SETTINGS --- */
body {
    background-color: var(--bg-body);
    color: var(--text-main);
    font-family: 'Inter', 'Roboto', -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif !important;
    font-size: 0.95rem;
    line-height: 1.6;
    transition: background-color 0.3s ease, color 0.3s ease;
}

/* --- HEADER --- */
header {
    background-color: var(--navbar-bg);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    box-shadow: var(--shadow-soft);
    height: var(--header-height);
    position: sticky; top: 0; z-index: 1000;
    display: flex; align-items: center;
    border-bottom: 1px solid var(--border-color);
}
.navbar { padding: 0 20px !important; width: 100%; }
.navbar-brand img { height: 38px !important; width: auto; filter: drop-shadow(0 2px 4px rgba(0,0,0,0.1)); }
.nav-link {
    color: var(--text-main) !important; font-weight: 600; padding: 8px 16px !important;
    border-radius: 8px; margin: 0 2px; transition: all 0.2s ease;
}
.nav-link:hover { color: var(--primary-color) !important; background-color: var(--hover-row); transform: translateY(-1px); }
.user-tools { display: flex; align-items: center; gap: 15px; }

/* --- CONTAINER & CARDS --- */
.container { max-width: 1400px !important; padding-top: 30px; padding-bottom: 60px; }
.main-card {
    background-color: var(--bg-card); border: 1px solid var(--border-color);
    border-radius: 16px; box-shadow: var(--shadow-soft); padding: 30px; margin-bottom: 25px;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}
.main-card:hover { box-shadow: var(--shadow-hover); }

/* --- FORMULARE --- */
.form-group { margin-bottom: 1.5rem; position: relative; }
label {
    color: var(--text-muted); font-size: 0.75rem; font-weight: 700; text-transform: uppercase;
    letter-spacing: 0.05em; margin-bottom: 6px; display: block;
}
.form-control, .custom-select, input {
    background-color: var(--input-bg) !important; border: 1px solid var(--input-border) !important;
    color: var(--input-text) !important; border-radius: 10px !important; padding: 10px 15px;
    height: auto !important; min-height: 45px; font-size: 0.95rem;
    transition: all 0.2s ease; box-shadow: inset 0 2px 4px rgba(0,0,0,0.02);
}
.form-control:focus, .custom-select:focus {
    border-color: var(--primary-color) !important;
    box-shadow: 0 0 0 4px rgba(49, 130, 206, 0.15) !important;
    background-color: var(--bg-card) !important;
}
textarea.form-control { min-height: 100px; }

/* --- BUTTONS --- */
.btn-primary {
    background: var(--primary-gradient) !important; border: none !important;
    box-shadow: 0 4px 6px rgba(50, 130, 206, 0.3); font-weight: 600; padding: 10px 24px;
    border-radius: 10px; transition: all 0.2s ease;
}
.btn-primary:hover {
    box-shadow: 0 7px 14px rgba(50, 130, 206, 0.4); transform: translateY(-2px); filter: brightness(110%);
}
.btn-secondary, .btn-outline-secondary { border-radius: 10px; padding: 10px 20px; font-weight: 500; }
.btn-sm { padding: 5px 12px; font-size: 0.85rem; border-radius: 8px; }

/* --- TABELLEN --- */
.table-responsive { border: 1px solid var(--border-color); border-radius: 16px; overflow-x: auto; }
table.dataTable, table.table {
    width: 100% !important; border-collapse: separate !important; border-spacing: 0; margin-bottom: 0;
}
table.dataTable thead th, table.table thead th {
    background-color: var(--bg-body); color: var(--text-muted); font-size: 0.75rem;
    font-weight: 800; text-transform: uppercase; letter-spacing: 0.05em;
    border-bottom: 2px solid var(--border-color) !important; padding: 15px 12px;
}
table.dataTable tbody td, table.table tbody td {
    border-bottom: 1px solid var(--border-color); color: var(--text-main);
    padding: 16px 12px; vertical-align: middle;
    background-color: var(--bg-card); /* Default Hintergrund */
    font-size: 0.9rem;
}
table tbody tr:last-child td { border-bottom: none; }
table tbody tr:hover td { background-color: var(--hover-row) !important; color: var(--primary-color); }

/* --- FIX: FEIERTAGS/WOCHENEND FARBEN --- */
/* Diese Regeln erkennen die PHP-Inline-Styles und erzwingen die korrekte Farbe auf den Zellen */

/* Feiertage (#ffadad) */
tr[style*="#ffadad"] td, tr[style*="rgb(255, 173, 173)"] td {
    background-color: var(--holiday-bg) !important;
    color: var(--holiday-text);
    border-top: 1px solid rgba(0,0,0,0.05);
    border-bottom: 1px solid rgba(0,0,0,0.05);
}

/* Sonntag (#d6d6d6) */
tr[style*="#d6d6d6"] td, tr[style*="rgb(214, 214, 214)"] td {
    background-color: var(--sunday-bg) !important;
}

/* Samstag (#f5f5f5) */
tr[style*="#f5f5f5"] td, tr[style*="rgb(245, 245, 245)"] td {
    background-color: var(--saturday-bg) !important;
}

/* --- THEME TOGGLE BUTTON --- */
.theme-btn {
    background: transparent; border: 2px solid var(--border-color); color: var(--text-muted);
    width: 40px; height: 40px; border-radius: 12px; cursor: pointer;
    display: flex; align-items: center; justify-content: center; transition: all 0.2s ease;
}
.theme-btn:hover {
    color: var(--primary-color); border-color: var(--primary-color);
    background-color: var(--hover-row); transform: rotate(15deg);
}

/* Utilities */
.text-right { text-align: right !important; }
.hidden { display: none; }
.urlaub_show {
    pointer-events: none;
    user-select: none; 
}