* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: #fafafa;
    color: #333;
    line-height: 1.6;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
}

header {
    background: #2c3e50;
    color: white;
    padding: 25px;
    margin-bottom: 30px;
    border-bottom: 3px solid #34495e;
}

header h1 {
    font-size: 1.8rem;
    text-align: center;
    font-weight: 400;
}

.main-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 25px;
}

/* Section des événements */
.events-section {
    background: white;
    padding: 25px;
    border: 1px solid #ddd;
}

.events-section h2 {
    color: #2c3e50;
    margin-bottom: 20px;
    font-size: 1.3rem;
    font-weight: 500;
    border-bottom: 2px solid #e0e0e0;
    padding-bottom: 10px;
}

.loading {
    text-align: center;
    padding: 40px;
    color: #666;
    font-style: italic;
}

.events-list {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.event-card {
    border: 1px solid #e0e0e0;
    border-left: 3px solid #3498db;
    padding: 15px;
    cursor: pointer;
    transition: all 0.2s ease;
    background: white;
}

.event-card:hover {
    border-left-color: #2c3e50;
    background: #f9f9f9;
}

.event-card.selected {
    border-left-color: #2c3e50;
    background: #f5f5f5;
}

.event-title {
    font-size: 1.1rem;
    font-weight: 600;
    color: #2c3e50;
    margin-bottom: 10px;
}

.event-details {
    display: flex;
    flex-direction: column;
    gap: 5px;
    color: #555;
    font-size: 0.9rem;
}

.event-type {
    display: inline-block;
    padding: 3px 10px;
    font-size: 0.8rem;
    font-weight: 500;
    margin-top: 8px;
    border: 1px solid;
    width: fit-content;
}

.event-type.visio {
    background: #ecf0f1;
    color: #34495e;
    border-color: #bdc3c7;
}

.event-type.physique {
    background: #ecf0f1;
    color: #34495e;
    border-color: #bdc3c7;
}

.event-register-btn {
    margin-top: 12px;
    padding: 8px 16px;
    background: #2c3e50;
    color: white;
    border: none;
    cursor: pointer;
    font-size: 0.9rem;
    font-weight: 500;
    transition: background 0.2s ease;
}

.event-register-btn:hover {
    background: #34495e;
}

/* État vide - Aucun événement */
.empty-state {
    text-align: center;
    padding: 60px 40px;
    background: white;
    border-radius: 12px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    margin: 20px;
}

.empty-state-icon {
    font-size: 4rem;
    margin-bottom: 20px;
    opacity: 0.5;
}

.empty-state h3 {
    color: #2c3e50;
    font-size: 1.5rem;
    margin-bottom: 15px;
    font-weight: 600;
}

.empty-state p {
    color: #7f8c8d;
    font-size: 1rem;
    line-height: 1.6;
    margin-bottom: 10px;
}

.empty-state-hint {
    color: #95a5a6;
    font-size: 0.9rem;
    font-style: italic;
    margin-top: 20px;
}

/* Formations avec tooltip */
.formations-line {
    position: relative;
}

.formations-tooltip {
    color: #667eea;
    font-weight: 600;
    cursor: help;
    position: relative;
    font-size: 0.85em;
}

/* Tooltip dynamique créé en JavaScript */
.formations-tooltip-content {
    position: fixed;
    background: #2c3e50;
    color: white;
    padding: 12px 16px;
    border-radius: 8px;
    font-size: 0.9rem;
    min-width: 250px;
    max-width: 350px;
    z-index: 1000;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    font-weight: normal;
    line-height: 1.8;
    text-align: left;
    animation: tooltipFadeIn 0.2s ease;
    pointer-events: none;
}

.formations-tooltip-content div {
    margin: 4px 0;
}

.formations-tooltip-content::after {
    content: '';
    position: absolute;
    bottom: -8px;
    left: 50%;
    transform: translateX(-50%);
    border: 8px solid transparent;
    border-top-color: #2c3e50;
}

@keyframes tooltipFadeIn {
    from {
        opacity: 0;
        transform: translate(-50%, -100%) translateY(5px);
    }
    to {
        opacity: 1;
        transform: translate(-50%, -100%) translateY(0);
    }
}

/* Section calendrier */
.calendar-section {
    background: white;
    padding: 25px;
    border: 1px solid #ddd;
    position: sticky;
    top: 20px;
    height: fit-content;
}

.calendar-section h2 {
    color: #2c3e50;
    margin-bottom: 20px;
    font-size: 1.3rem;
    font-weight: 500;
    border-bottom: 2px solid #e0e0e0;
    padding-bottom: 10px;
}

.calendar-controls {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
}

.calendar-controls button {
    background: #2c3e50;
    color: white;
    border: none;
    padding: 8px 16px;
    cursor: pointer;
    font-size: 0.95rem;
    transition: background 0.2s ease;
}

.calendar-controls button:hover {
    background: #34495e;
}

#current-month {
    font-weight: 500;
    font-size: 1rem;
    color: #2c3e50;
}

.calendar {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    gap: 8px;
}

.calendar-day-header {
    text-align: center;
    font-weight: 600;
    padding: 12px 5px;
    color: #2c3e50;
    font-size: 0.85rem;
    background: #f5f5f5;
}

.calendar-day {
    aspect-ratio: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 1px solid #e0e0e0;
    cursor: pointer;
    transition: all 0.2s ease;
    font-size: 1rem;
    min-height: 50px;
}

.calendar-day:hover {
    background: #f5f5f5;
    border-color: #bbb;
}

.calendar-day.other-month {
    color: #ccc;
}

.calendar-day.has-event {
    background: #3498db;
    border: 1px solid #2980b9;
    font-weight: 600;
    color: white;
    transition: background 0.2s ease, transform 0.1s ease;
}

.calendar-day.has-event:hover {
    background: #2980b9;
    transform: scale(1.05);
}

/* Tooltip pour les événements du calendrier */
.calendar-tooltip {
    position: fixed;
    background: #2c3e50;
    color: white;
    padding: 12px 16px;
    border-radius: 8px;
    font-size: 0.9rem;
    min-width: 200px;
    max-width: 300px;
    z-index: 1000;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
    transform: translate(-50%, -100%);
    animation: tooltipFadeIn 0.2s ease;
    pointer-events: none;
}

.calendar-tooltip-item {
    padding: 6px 0;
}

.calendar-tooltip-item + .calendar-tooltip-item {
    border-top: 1px solid rgba(255, 255, 255, 0.2);
}

.calendar-tooltip-item strong {
    display: block;
    margin-bottom: 4px;
    color: #3498db;
}

.calendar-tooltip-item div {
    font-size: 0.85rem;
    color: #bdc3c7;
}

.calendar-tooltip::after {
    content: '';
    position: absolute;
    bottom: -8px;
    left: 50%;
    transform: translateX(-50%);
    border: 8px solid transparent;
    border-top-color: #2c3e50;
}

/* Modal */
.modal {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    animation: fadeIn 0.3s ease;
}

.modal.show {
    display: flex;
    justify-content: center;
    align-items: center;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

.modal-content {
    background: white;
    padding: 35px;
    max-width: 550px;
    width: 90%;
    max-height: 90vh;
    overflow-y: auto;
    animation: slideUp 0.3s ease;
    border: 1px solid #ddd;
}

@keyframes slideUp {
    from {
        transform: translateY(50px);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

.close {
    float: right;
    font-size: 28px;
    font-weight: bold;
    color: #999;
    cursor: pointer;
    line-height: 1;
}

.close:hover {
    color: #333;
}

.modal-content h2 {
    color: #2c3e50;
    margin-bottom: 20px;
    clear: both;
    font-weight: 500;
}

#selected-event-info {
    background: #f9f9f9;
    padding: 15px;
    margin-bottom: 25px;
    border-left: 3px solid #3498db;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 15px;
    margin-bottom: 20px;
}

.form-group {
    margin-bottom: 20px;
}

.form-row .form-group {
    margin-bottom: 0;
}

.form-group label {
    display: block;
    margin-bottom: 5px;
    font-weight: 600;
    color: #333;
}

.form-group input,
.form-group select {
    width: 100%;
    padding: 10px;
    border: 1px solid #ddd;
    font-size: 0.95rem;
    transition: border-color 0.2s ease;
    background: white;
}

.form-group input:focus,
.form-group select:focus {
    outline: none;
    border-color: #3498db;
}

/* Checkbox RGPD */
.form-group-checkbox {
    margin: 25px 0;
    padding: 15px;
    background: #f8f9fa;
    border-radius: 8px;
    border: 1px solid #e0e0e0;
}

.checkbox-label {
    display: flex;
    align-items: flex-start;
    cursor: pointer;
    gap: 12px;
}

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

.checkbox-text {
    font-size: 0.9rem;
    line-height: 1.5;
    color: #555;
}

.checkbox-text a {
    color: #3498db;
    text-decoration: underline;
    font-weight: 500;
}

.checkbox-text a:hover {
    color: #2980b9;
}

.form-actions {
    display: flex;
    gap: 15px;
    margin-top: 30px;
}

.btn-cancel,
.btn-submit {
    flex: 1;
    padding: 10px;
    border: none;
    font-size: 0.95rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
}

.btn-cancel {
    background: #ecf0f1;
    color: #555;
    border: 1px solid #bdc3c7;
}

.btn-cancel:hover {
    background: #bdc3c7;
}

.btn-submit {
    background: #2c3e50;
    color: white;
}

.btn-submit:hover {
    background: #34495e;
}

.btn-submit:disabled {
    background: #95a5a6;
    cursor: not-allowed;
}

.success-message {
    background: #d5f4e6;
    color: #27ae60;
    padding: 15px;
    margin-top: 20px;
    border-left: 3px solid #27ae60;
    font-weight: 500;
}

.hidden {
    display: none;
}

/* Responsive */
@media (max-width: 900px) {
    .main-content {
        grid-template-columns: 1fr;
    }

    .calendar-section {
        position: relative;
        top: 0;
    }
}

@media (max-width: 600px) {
    header h1 {
        font-size: 1.5rem;
    }

    .modal-content {
        padding: 20px;
    }

    .form-row {
        grid-template-columns: 1fr;
        gap: 0;
    }

    .form-row .form-group {
        margin-bottom: 20px;
    }

    .form-actions {
        flex-direction: column;
    }
}