/* --- MODERN & CLEAN STYLING (v10 - Correcte Wisseldag Kleuren) --- */

/* 1. VARIABELEN & BASIS */
:root {
    --primary-color: #007bff;
    --primary-hover: #0056b3;
    --secondary-color: #6c757d;
    --success-color: #28a745;
    --success-hover: #218838;
    --danger-color: #dc3545;
    --warning-color: #fd7e14;
    --light-bg: #f8f9fa;
    --white: #ffffff;
    --dark-text: #212529;
    --border-color: #dee2e6;
    --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    --box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
    --border-radius: 0.375rem; /* 6px */
}

*, *::before, *::after {
    box-sizing: border-box;
}

body {
    font-family: var(--font-family);
    background-color: var(--light-bg);
    color: var(--dark-text);
    margin: 0;
    font-size: 16px;
    line-height: 1.6;
}

/* 2. CONTAINER & LAYOUT */
.container {
    max-width: 1200px;
    margin: 30px auto;
    padding: 0 20px;
}

.content-box {
    background-color: var(--white);
    padding: 30px 40px;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
}

/* 3. TYPOGRAFIE & BASIS ELEMENTEN */
h1, h2, h3 {
    color: var(--dark-text);
    margin-top: 0;
    margin-bottom: 1.5rem;
    line-height: 1.2;
}
h1 { font-size: 2.25rem; }
h2 { font-size: 1.75rem; border-bottom: 1px solid var(--border-color); padding-bottom: 1rem; }
h3 { font-size: 1.25rem; }
a { color: var(--primary-color); text-decoration: none; transition: color 0.2s; }
a:hover { color: var(--primary-hover); }
hr { border: 0; border-top: 1px solid var(--border-color); margin: 2rem 0; }

/* 4. KNOPPEN */
.button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    background-color: var(--success-color);
    color: var(--white) !important;
    padding: 12px 25px;
    border: none;
    border-radius: var(--border-radius);
    cursor: pointer;
    font-size: 1rem;
    font-weight: 500;
    text-decoration: none;
    text-align: center;
    transition: background-color 0.2s, transform 0.1s;
    line-height: 1.5;
}
.button:hover {
    background-color: var(--success-hover);
    transform: translateY(-1px);
}
.button.secondary {
    background-color: var(--secondary-color);
}
.button.secondary:hover {
    background-color: #5a6268;
}

.nav-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background-color: #e9ecef;
    border: 1px solid #ced4da;
    color: var(--secondary-color);
    padding: 0;
    line-height: 1;
    cursor: pointer;
    transition: background-color 0.2s, color 0.2s, transform 0.1s;
}
.nav-btn:hover {
    background-color: #ced4da;
    color: var(--dark-text);
    transform: scale(1.05);
}

/* 5. FORMULIEREN & MELDINGEN */
.form-group { margin-bottom: 1.25rem; }
.form-group label { display: block; margin-bottom: 0.5rem; font-weight: 500; }
.form-group input, .form-group textarea, .form-group select {
    width: 100%;
    padding: 12px 15px;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    box-sizing: border-box;
    font-size: 1rem;
    transition: border-color 0.2s, box-shadow 0.2s;
}
.form-group input:focus, .form-group textarea:focus, .form-group select:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(0, 123, 255, 0.25);
}
.form-group input[type="checkbox"] {
    width: auto;
    margin-right: 0.5rem;
}
.form-row {
    display: flex;
    gap: 1.5rem;
}
.form-row .form-group {
    flex: 1;
}

.error-box {
    background-color: #f8d7da;
    color: #721c24;
    border: 1px solid #f5c6cb;
    padding: 1rem 1.5rem;
    margin-bottom: 1.5rem;
    border-radius: var(--border-radius);
    display: flex;
    align-items: center;
    gap: 0.75rem;
}
.error-box i {
    font-size: 1.2rem;
}

/* 6. KALENDER STIJLEN (FRONTEND) */
#global-calendar-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
    padding: 0 1rem;
}
#global-calendar-header .nav-btn {
    width: 44px;
    height: 44px;
    font-size: 1rem;
    border-radius: 50%;
    flex-shrink: 0;
}
#global-month-year-title {
    font-size: 1.5rem;
    font-weight: 600;
    margin: 0;
    padding: 0;
    border: none;
    text-align: center;
    flex-grow: 1;
}

#multi-calendar-container {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}
.calendar-wrapper { margin-bottom: 0; }
.calendar-header { display: flex; justify-content: center; align-items: center; padding-bottom: 0.8rem; }
.calendar-header h2 { font-size: 1.1rem; border: none; padding: 0; margin: 0; font-weight: 500; color: var(--secondary-color); }
.calendar-grid { display: grid; grid-template-columns: repeat(7, 1fr); gap: 1px; background-color: var(--border-color); border: 1px solid var(--border-color); border-radius: var(--border-radius); overflow: hidden;}
.calendar-day-header { text-align: center; padding: 6px 2px; font-weight: 600; background-color: #e9ecef; font-size: 0.75rem; }
.calendar-day { position: relative; min-height: 50px; background-color: var(--white); display: flex; flex-direction: column; justify-content: center; align-items: center; padding: 2px; overflow: hidden; }
.calendar-day.not-current-month { background-color: #fdfdfd; color: #ccc; }
.day-number { font-size: 0.9rem; font-weight: 600; z-index: 2; color: var(--dark-text); }
.day-price { display: none; }
.calendar-day.not-current-month .day-number { color: #ccc; }

:root {
    --color-available: var(--success-color);
    --color-booked: var(--danger-color);
    --color-pending: var(--warning-color);
}
.day-status-overlay { position: absolute; top: 0; left: 0; width: 100%; height: 100%; z-index: 1; opacity: 0.8; }
.status-full-available { background-color: var(--color-available); }
.status-full-booked { background-color: var(--color-booked); }
.status-full-pending { background-color: var(--color-pending); }
.status-full-available .day-number, .status-full-booked .day-number, .status-full-pending .day-number { color: var(--white); }

/* AANGEPASTE GRADIENTEN VOOR WISSELDAGEN */
.status-start-booked { background: linear-gradient(to bottom right, var(--color-available) 49.5%, var(--color-booked) 50.5%); }
.status-start-pending { background: linear-gradient(to bottom right, var(--color-available) 49.5%, var(--color-pending) 50.5%); }
.status-end-booked { background: linear-gradient(to top left, var(--color-available) 49.5%, var(--color-booked) 50.5%); }
.status-end-pending { background: linear-gradient(to top left, var(--color-available) 49.5%, var(--color-pending) 50.5%); }

.legend { display: flex; flex-wrap: wrap; gap: 20px; margin: 2rem 0; padding-top: 1.5rem; border-top: 1px solid var(--border-color); }
.legend-item { display: flex; align-items: center; gap: 8px; }
.legend-box { width: 25px; height: 25px; border-radius: 4px; }
.legend-box.available { background-color: var(--color-available); }
.legend-box.booked { background-color: var(--color-booked); }
.legend-box.pending { background-color: var(--color-pending); }

/* 7. WIZARD (FRONTEND) */
.wizard-steps { display: flex; justify-content: space-around; margin-bottom: 2.5rem; list-style: none; padding: 0; border-bottom: 1px solid var(--border-color); }
.wizard-step { padding: 1rem; color: var(--secondary-color); border-bottom: 3px solid transparent; }
.wizard-step.active { color: var(--primary-color); font-weight: 600; border-bottom-color: var(--primary-color); }
.summary-box { background-color: var(--light-bg); border: 1px solid var(--border-color); padding: 20px; border-radius: var(--border-radius); margin-bottom: 2rem; }
.button-group { display: flex; justify-content: space-between; margin-top: 2rem; }

/* 8. ADMIN TABEL */
table { width: 100%; border-collapse: collapse; margin-top: 20px; background-color: var(--white); box-shadow: var(--box-shadow); border-radius: var(--border-radius); overflow: hidden; }
th, td { padding: 1rem; text-align: left; border-bottom: 1px solid var(--border-color); }
th { background-color: #f8f9fa; font-weight: 600; }
tbody tr:last-child td { border-bottom: 0; }
tbody tr:hover { background-color: #f1f3f5; }
.status-pending { color: var(--warning-color); font-weight: bold; }
.status-confirmed { color: var(--success-color); font-weight: bold; }
.status-cancelled { color: var(--danger-color); text-decoration: line-through; }
.actions a { margin-right: 15px; font-size: 1.2rem; }
.actions a.confirm { color: var(--success-color); }
.actions a.cancel { color: var(--danger-color); }
.actions a:hover { transform: scale(1.1); }

/* 9. RESPONSIVE DESIGN */
@media (max-width: 1024px) {
    #multi-calendar-container {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    h1 { font-size: 1.8rem; }
    h2 { font-size: 1.5rem; }
    .content-box { padding: 20px; }
    .button-group { flex-direction: column; gap: 1rem; }
    #multi-calendar-container { grid-template-columns: 1fr; }
    .form-row {
        flex-direction: column;
        gap: 0;
    }
    #global-calendar-header {
        gap: 1rem;
    }
    #global-month-year-title {
        font-size: 1.2rem;
    }
}