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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background: #f9fafb;
    color: #1f2937;
    line-height: 1.5;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 1rem;
}

.header {
    background: white;
    padding: 1rem;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
    margin-bottom: 1rem;
}

h1 {
    font-size: 1.5rem;
    text-align: center;
    color: #1f2937;
}

/* Écran d'upload */
.upload-screen {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1rem;
}

.upload-box {
    background: white;
    padding: 2rem;
    border-radius: 0.5rem;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    text-align: center;
    max-width: 400px;
    width: 100%;
}

.upload-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto 1rem;
    color: #ef4444;
}

/* Boutons */
.btn {
    background: #ef4444;
    color: white;
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: 0.5rem;
    cursor: pointer;
    font-size: 1rem;
    font-weight: 600;
    transition: background 0.2s;
}

.btn:hover {
    background: #dc2626;
}

.btn-secondary {
    background: transparent;
    color: #ef4444;
    border: none;
    cursor: pointer;
    text-decoration: underline;
    font-size: 0.875rem;
}

.btn-secondary:hover {
    color: #dc2626;
}

/* Calendrier */
.calendar-header {
    background: white;
    padding: 1rem;
    border-radius: 0.5rem;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
    margin-bottom: 1rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.month-nav {
    background: transparent;
    border: none;
    padding: 0.5rem;
    cursor: pointer;
    border-radius: 50%;
    transition: background 0.2s;
    display: flex;
    align-items: center;
    justify-content: center;
}

.month-nav:hover {
    background: #f3f4f6;
}

.month-title {
    font-size: 1.25rem;
    font-weight: 600;
    text-transform: capitalize;
}

.calendar {
    background: white;
    padding: 1rem;
    border-radius: 0.5rem;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}

.calendar-grid {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    gap: 0.25rem;
}

.day-header {
    padding: 0.5rem;
    text-align: center;
    font-weight: 600;
    color: #6b7280;
    font-size: 0.875rem;
}

.day-cell {
    min-height: 64px;
    padding: 0.5rem;
    text-align: center;
    border: 1px solid #e5e7eb;
    cursor: pointer;
    transition: all 0.2s;
    background: white;
    border-radius: 0.25rem;
}

.day-cell:hover {
    background: #f9fafb;
}

.day-cell.hike-day {
    background: #ef4444;
    color: white;
    font-weight: 600;
    border-color: #ef4444;
}

.day-cell.hike-day:hover {
    background: #dc2626;
    border-color: #dc2626;
}

.day-cell-date {
    font-size: 0.875rem;
}

.day-cell-name {
    font-size: 0.75rem;
    margin-top: 0.25rem;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

/* Modal */
.modal {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.5);
    z-index: 1000;
    align-items: center;
    justify-content: center;
    padding: 1rem;
}

.modal.show {
    display: flex;
}

.modal-content {
    background: white;
    border-radius: 0.5rem;
    max-width: 800px;
    width: 100%;
    max-height: 85vh;
    overflow-y: auto;
    box-shadow: 0 20px 25px rgba(0, 0, 0, 0.1);
}

.modal-header {
    background: #ef4444;
    color: white;
    padding: 1rem;
    border-radius: 0.5rem 0.5rem 0 0;
    display: flex;
    justify-content: space-between;
    align-items: start;
}

.modal-header h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 0.25rem;
}

.modal-header p {
    font-size: 0.875rem;
    color: rgba(255, 255, 255, 0.9);
}

.close-btn {
    background: transparent;
    border: none;
    color: white;
    font-size: 2rem;
    line-height: 1;
    cursor: pointer;
    padding: 0;
    width: 2rem;
    height: 2rem;
}

.close-btn:hover {
    opacity: 0.8;
}

.modal-body {
    padding: 1rem;
}

.info-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 0.5rem;
}

@media (min-width: 768px) {
    .info-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

.info-item {
    display: flex;
    gap: 0.5rem;
    font-size: 0.875rem;
}

.info-label {
    font-weight: 600;
    color: #374151;
    white-space: nowrap;
}

.info-value {
    color: #6b7280;
}

/* Responsive */
@media (max-width: 640px) {
    h1 {
        font-size: 1.25rem;
    }
    
    .month-title {
        font-size: 1rem;
    }
    
    .day-cell {
        min-height: 50px;
        padding: 0.25rem;
    }
    
    .day-cell-date {
        font-size: 0.75rem;
    }
    
    .day-cell-name {
        font-size: 0.625rem;
    }
}