/* Lernlabor Booking Frontend CSS - Museum Arbeitswelt Design */

:root {
    --llb-primary: #1a1a1a;
    --llb-primary-dark: #000000;
    --llb-accent: #c8102e;
    --llb-accent-hover: #a00d25;
    --llb-success: #5cb85c;
    --llb-danger: #c8102e;
    --llb-warning: #f0ad4e;
    --llb-border: #d0d0d0;
    --llb-light-bg: #f5f5f5;
    --llb-text: #1a1a1a;
    --llb-text-light: #666666;
}

/* Base Typography */
.llb-offer-selection,
.llb-booking-form-container {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    color: var(--llb-text);
    line-height: 1.6;
}

/* Offer Selection */
.llb-offer-selection {
    max-width: 800px;
    margin: 0 auto;
    padding: 20px;
}

.llb-offer-selection h2 {
    background: var(--llb-primary);
    color: white;
    padding: 40px 30px;
    margin: 0 0 30px 0;
    border-radius: 0;
    font-size: 32px;
    font-weight: 700;
    text-align: left;
    letter-spacing: -0.5px;
}

.llb-offer-card {
    background: white;
    border: 1px solid var(--llb-border);
    border-radius: 0;
    padding: 30px;
    margin-bottom: 20px;
    transition: box-shadow 0.3s ease;
}

.llb-offer-card:hover {
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.llb-offer-card h3 {
    color: var(--llb-primary);
    margin-top: 0;
    font-size: 24px;
    font-weight: 700;
    letter-spacing: -0.3px;
}

.llb-offer-details {
    margin: 20px 0;
}

.llb-offer-details p {
    margin: 10px 0;
    display: flex;
    align-items: center;
    gap: 8px;
}

.llb-offer-details svg {
    flex-shrink: 0;
}

.llb-select-offer {
    background: var(--llb-accent);
    color: white;
    border: none;
    padding: 15px 40px;
    font-size: 16px;
    font-weight: 600;
    border-radius: 0;
    cursor: pointer;
    transition: background-color 0.3s;
    width: 100%;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.llb-select-offer:hover {
    background: var(--llb-accent-hover);
}

/* Booking Form */
.llb-booking-form-container {
    max-width: 800px;
    margin: 0 auto;
    background: white;
    border: 1px solid var(--llb-border);
    border-radius: 0;
    overflow: hidden;
}

.llb-booking-form-container h2 {
    background: var(--llb-primary);
    color: white;
    padding: 40px 30px;
    margin: 0;
    font-size: 32px;
    font-weight: 700;
    letter-spacing: -0.5px;
}

.llb-offer-info {
    padding: 20px 30px;
    background: var(--llb-light-bg);
    border-bottom: 1px solid var(--llb-border);
}

.llb-offer-info p {
    margin: 5px 0;
    color: var(--llb-text-light);
}

.llb-form-section {
    padding: 30px;
}

.llb-form-section h3 {
    color: var(--llb-primary);
    margin-top: 0;
    margin-bottom: 20px;
    font-size: 22px;
    font-weight: 700;
    letter-spacing: -0.3px;
}

.llb-form-section h4 {
    color: var(--llb-primary);
    margin-top: 30px;
    margin-bottom: 15px;
    font-size: 18px;
    font-weight: 600;
}

/* Calendar */
.llb-calendar-navigation {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
    gap: 20px;
}

#llb-current-month {
    font-weight: bold;
    font-size: 18px;
    color: var(--llb-primary);
    text-align: center;
    flex: 1;
}

.llb-nav-button {
    background: var(--llb-primary);
    color: white;
    border: none;
    padding: 12px 24px;
    border-radius: 0;
    cursor: pointer;
    font-size: 14px;
    font-weight: 600;
    transition: background-color 0.3s;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.llb-nav-button:hover {
    background: var(--llb-primary-dark);
}

#llb-calendar {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    gap: 5px;
    margin-top: 15px;
}

.llb-calendar-header {
    font-weight: bold;
    padding: 10px;
    text-align: center;
    color: var(--llb-primary);
    font-size: 14px;
}

.llb-calendar-day {
    aspect-ratio: 1;
    border: 1px solid var(--llb-border);
    border-radius: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.2s;
    font-size: 16px;
    font-weight: 500;
    background: white;
}

.llb-calendar-day:hover:not(.disabled):not(.other-month) {
    border-color: var(--llb-primary);
    background: var(--llb-light-bg);
    transform: scale(1.05);
}

.llb-calendar-day.selected {
    background: var(--llb-accent);
    color: white;
    border-color: var(--llb-accent);
    font-weight: 700;
}

.llb-calendar-day.disabled {
    opacity: 0.3;
    cursor: not-allowed;
    background: #f5f5f5;
}

.llb-calendar-day.other-month {
    opacity: 0.3;
    cursor: default;
}

.llb-calendar-day.today {
    font-weight: bold;
    border-color: var(--llb-primary);
}

/* Timeslots */
#llb-timeslot-container {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
    gap: 10px;
}

.llb-timeslot {
    border: 1px solid var(--llb-border);
    background: white;
    padding: 15px;
    text-align: center;
    border-radius: 0;
    cursor: pointer;
    transition: all 0.2s;
    font-size: 16px;
    font-weight: 600;
}

.llb-timeslot:hover {
    background: var(--llb-light-bg);
    border-color: var(--llb-primary);
    transform: scale(1.03);
}

.llb-timeslot.selected {
    background: var(--llb-accent);
    color: white;
    border-color: var(--llb-accent);
}

.llb-timeslot.disabled {
    opacity: 0.3;
    cursor: not-allowed;
}

/* Form Fields */
.llb-form-row {
    margin-bottom: 20px;
}

.llb-form-row label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    color: var(--llb-text);
    font-size: 14px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.llb-form-row input[type="text"],
.llb-form-row input[type="email"],
.llb-form-row input[type="tel"],
.llb-form-row input[type="number"],
.llb-form-row select,
.llb-form-row textarea {
    width: 100%;
    padding: 12px 16px;
    border: 1px solid var(--llb-border);
    border-radius: 0;
    font-size: 16px;
    box-sizing: border-box;
    transition: border-color 0.3s, box-shadow 0.3s;
    font-family: inherit;
}

.llb-form-row input:focus,
.llb-form-row select:focus,
.llb-form-row textarea:focus {
    outline: none;
    border-color: var(--llb-primary);
    box-shadow: 0 0 0 2px rgba(26, 26, 26, 0.1);
}

/* Participants Hint */
.llb-participants-hint {
    margin: 6px 0 0 0;
    font-size: 13px;
    color: var(--llb-text-light);
    font-weight: 400;
}

.llb-checkbox-row label {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    font-weight: normal;
}

.llb-checkbox-row input[type="checkbox"] {
    margin-top: 3px;
    width: 18px;
    height: 18px;
    flex-shrink: 0;
}

.llb-checkbox-row a {
    color: var(--llb-primary);
    text-decoration: underline;
}

/* Form Actions */
.llb-form-actions {
    margin-top: 30px;
    text-align: right;
}

.llb-submit-button {
    background: var(--llb-accent);
    color: white;
    border: none;
    padding: 16px 50px;
    font-size: 16px;
    font-weight: 600;
    border-radius: 0;
    cursor: pointer;
    transition: background-color 0.3s;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.llb-submit-button:hover {
    background: var(--llb-accent-hover);
}

.llb-submit-button:disabled {
    background: #ccc;
    cursor: not-allowed;
}

/* Messages */
.llb-messages {
    margin-top: 20px;
}

.llb-message {
    padding: 15px 20px;
    border-radius: 4px;
    margin-bottom: 15px;
}

.llb-message.success {
    background: #d4edda;
    border: 1px solid #c3e6cb;
    color: #155724;
}

.llb-message.error {
    background: #f8d7da;
    border: 1px solid #f5c6cb;
    color: #721c24;
}

.llb-error {
    color: var(--llb-danger);
    padding: 20px;
    text-align: center;
    font-weight: 600;
}

/* Loading State */
.llb-loading {
    position: relative;
    opacity: 0.6;
    pointer-events: none;
}

.llb-loading::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 40px;
    height: 40px;
    margin: -20px 0 0 -20px;
    border: 4px solid var(--llb-primary);
    border-top-color: transparent;
    border-radius: 50%;
    animation: llb-spin 0.8s linear infinite;
}

@keyframes llb-spin {
    to { transform: rotate(360deg); }
}

/* Responsive */
@media (max-width: 768px) {
    .llb-booking-form-container,
    .llb-offer-selection {
        border: none;
        border-radius: 0;
    }
    
    .llb-form-section,
    .llb-offer-card {
        padding: 20px;
    }
    
    #llb-calendar {
        gap: 3px;
    }
    
    .llb-calendar-day {
        font-size: 14px;
    }
    
    #llb-timeslot-container {
        grid-template-columns: repeat(auto-fill, minmax(100px, 1fr));
    }
    
    .llb-calendar-navigation {
        flex-direction: column;
    }
    
    .llb-nav-button {
        width: 100%;
    }
}

.llb-duration-hint {
    font-size: 0.85em;
    color: #666;
    font-style: italic;
}