/* ==========================================================================
   1. Theme Variables
   ========================================================================== */
:root {
    /* Standard Accent Colors (Default: Blau) */
    --primary: #2563eb;
    --primary-hover: #1d4ed8;
    --primary-light: #e0f2fe;
    --brand-color: #38bdf8;

    /* Dark Mode Defaults */
    --bg-body: #0f172a;
    --bg-card: #1e293b;
    --bg-navbar: #0f172a;
    --border-color: #334155;
    --text-main: #f8fafc;
    --text-muted: #94a3b8;
    --input-bg: #0f172a;
}

/* Light Mode Overrides */
[data-theme="light"] {
    --bg-body: #f8fafc;
    --bg-card: #ffffff;
    --bg-navbar: #ffffff;
    --border-color: #e2e8f0;
    --text-main: #1e293b;
    --text-muted: #64748b;
    --input-bg: #ffffff;
    --brand-color: var(--primary);
}

/* Color Presets (Light Mode) */
[data-theme="light"][data-color="blue"] {
    --primary: #2563eb;
    --primary-hover: #1d4ed8;
    --primary-light: #eff6ff;
    --brand-color: #2563eb;
}

[data-theme="light"][data-color="rose"] {
    --primary: #e11d48;
    --primary-hover: #be123c;
    --primary-light: #fff1f2;
    --brand-color: #e11d48;
}

[data-theme="light"][data-color="green"] {
    --primary: #16a34a;
    --primary-hover: #15803d;
    --primary-light: #f0fdf4;
    --brand-color: #16a34a;
}

/* ==========================================================================
   2. Base Styles
   ========================================================================== */
* { box-sizing: border-box; margin: 0; padding: 0; font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif; }

body { 
    background-color: var(--bg-body); 
    color: var(--text-main); 
    min-height: 100vh; 
    display: flex; 
    flex-direction: column; 
    transition: background-color 0.3s, color 0.3s;
}

.container { max-width: 1100px; width: 100%; margin: 0 auto; padding: 1.5rem 1rem; flex: 1; }

/* Responsive Navigation Bar */
.navbar { 
    background: var(--bg-navbar); 
    color: var(--text-main); 
    padding: 0.75rem 1.25rem; 
    display: flex; 
    justify-content: space-between; 
    align-items: center; 
    position: relative; 
    z-index: 100; 
    border-bottom: 1px solid var(--border-color);
    transition: background-color 0.3s, border-color 0.3s;
}

.brand { font-size: 1.25rem; font-weight: bold; color: var(--brand-color); text-decoration: none; }
.nav-links { display: flex; gap: 1rem; align-items: center; }
.nav-links a { color: var(--text-muted); text-decoration: none; font-size: 0.95rem; font-weight: 500; transition: color 0.2s, background-color 0.2s; }
.nav-links a:hover, .nav-links a.active { color: var(--text-main); }

.btn-logout { background: #ef4444; color: white !important; padding: 0.4rem 0.8rem; border-radius: 6px; }
.btn-logout:hover { background: #dc2626; }

.menu-toggle { display: none; background: none; border: none; color: var(--text-main); font-size: 1.5rem; cursor: pointer; }

/* Cards & UI Elements */
.card { 
    background: var(--bg-card); 
    border-radius: 12px; 
    padding: 1.25rem; 
    border: 1px solid var(--border-color); 
    box-shadow: 0 1px 3px rgba(0,0,0,0.05); 
    color: var(--text-main);
    transition: background-color 0.3s, border-color 0.3s;
}

.btn { display: inline-block; padding: 0.5rem 1rem; border-radius: 6px; text-decoration: none; font-weight: 500; cursor: pointer; border: none; text-align: center; }
.btn-primary { background: var(--primary); color: white; }
.btn-primary:hover { background: var(--primary-hover); }
.btn-secondary { background: var(--border-color); color: var(--text-main); }
.btn-secondary:hover { opacity: 0.9; }
.btn-sm { padding: 0.25rem 0.6rem; font-size: 0.85rem; }

.form-group { margin-bottom: 1rem; }
.form-group label { display: block; font-weight: 500; margin-bottom: 0.4rem; font-size: 0.9rem; color: var(--text-main); }
.form-group input, .form-group select { 
    width: 100%; 
    padding: 0.6rem; 
    border: 1px solid var(--border-color); 
    background-color: var(--input-bg);
    color: var(--text-main);
    border-radius: 6px; 
    font-size: 1rem; 
}

/* Theme Switcher Controls */
.theme-controls {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.theme-toggle-btn {
    background: transparent;
    border: 1px solid var(--border-color);
    color: var(--text-main);
    padding: 0.35rem 0.65rem;
    border-radius: 6px;
    cursor: pointer;
    font-size: 0.9rem;
}

.color-picker {
    display: none; /* Nur sichtbar im Light-Theme */
    align-items: center;
    gap: 0.35rem;
}

[data-theme="light"] .color-picker {
    display: flex;
}

.color-dot {
    width: 18px;
    height: 18px;
    border-radius: 50%;
    border: 2px solid transparent;
    cursor: pointer;
    transition: transform 0.1s;
}

.color-dot:hover { transform: scale(1.15); }
.color-dot.active { border-color: var(--text-main); }
.color-dot.blue { background-color: #2563eb; }
.color-dot.rose { background-color: #e11d48; }
.color-dot.green { background-color: #16a34a; }

/* ==========================================================================
   3. Mobile Optimierungen
   ========================================================================== */
@media (max-width: 768px) {
    .menu-toggle { display: block; }

    .nav-links { 
        display: none; 
        flex-direction: column; 
        position: absolute; 
        top: calc(100% + 0.5rem); 
        right: 1rem; 
        left: auto;
        width: 250px; 
        background: var(--bg-card); 
        backdrop-filter: blur(8px);
        padding: 0.85rem; 
        border: 1px solid var(--border-color); 
        border-radius: 12px;
        gap: 0.4rem;
        box-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.3);
        z-index: 1000;
    }

    .nav-links.active { display: flex; }

    .nav-links a { 
        width: 100%; 
        padding: 0.55rem 0.75rem; 
        font-size: 0.95rem; 
        border-radius: 6px;
        display: block;
    }

    .nav-links a:hover {
        background: var(--border-color);
    }

    .nav-links a[href*="admin"] {
        color: var(--brand-color);
        background: var(--primary-light);
        font-weight: 600;
    }

    .btn-logout { 
        text-align: center; 
        margin-top: 0.3rem; 
        padding: 0.55rem 0.75rem;
    }

    .mobile-theme-wrapper {
        padding: 0.5rem 0.75rem;
        border-bottom: 1px solid var(--border-color);
        margin-bottom: 0.25rem;
    }
}

/* ==========================================================================
   4. Modal & Kostenansicht Fixes (Dark Mode & Usability)
   ========================================================================== */

/* Modals an Theme-Farben anpassen */
.modal-box, .modal-content {
    background-color: var(--bg-card) !important;
    color: var(--text-main) !important;
    border: 1px solid var(--border-color);
}

.modal-header, .modal-title, #modalDateTitle {
    color: var(--text-main) !important;
    border-bottom-color: var(--border-color) !important;
}

.modal-close {
    color: var(--text-muted) !important;
}

/* Kalendertage im Modal */
#modalEventsList p, 
#modalEventsList span, 
#modalEventsList div {
    color: var(--text-main) !important;
}

/* Tabellen & Listen in Karten (z.B. Fixkosten-Übersicht) */
table, td, th, tr {
    color: var(--text-main) !important;
    border-color: var(--border-color) !important;
}

/* Texte in Formularen & Tabellenkarten lesbar machen */
.card span, 
.card div, 
.card label, 
.card td, 
.card th {
    color: var(--text-main);
}

.card .text-muted, 
.modal-box .text-muted {
    color: var(--text-muted) !important;
}