/* ===== BOUTONS MODERNES 2025 ===== */
.btn {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md) var(--spacing-xl);
    border: none;
    border-radius: var(--border-radius-lg);
    font-family: var(--font-primary);
    font-size: var(--font-size-base);
    font-weight: 600;
    text-decoration: none;
    cursor: pointer;
    transition: all var(--transition-bounce);
    position: relative;
    overflow: hidden;
    backdrop-filter: var(--blur-sm);
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
}

.btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left var(--transition-slow);
}

.btn:hover::before {
    left: 100%;
}

.btn--primary {
    background: var(--gradient-primary);
    color: white;
    border: 2px solid transparent;
}

.btn--primary:hover {
    transform: translateY(-2px) scale(1.02);
    box-shadow: 0 20px 25px -5px rgba(99, 102, 241, 0.3), 0 10px 10px -5px rgba(99, 102, 241, 0.2);
}

.btn--secondary {
    background: var(--gradient-secondary);
    color: white;
    border: 2px solid transparent;
}

.btn--secondary:hover {
    transform: translateY(-2px) scale(1.02);
    box-shadow: 0 20px 25px -5px rgba(245, 158, 11, 0.3), 0 10px 10px -5px rgba(245, 158, 11, 0.2);
}

.btn--outline {
    background: transparent;
    color: var(--primary-color);
    border: 2px solid var(--primary-color);
    backdrop-filter: var(--blur-md);
}

.btn--outline:hover {
    background: var(--primary-color);
    color: white;
    transform: translateY(-2px);
    box-shadow: 0 10px 15px -3px rgba(99, 102, 241, 0.3);
}

.btn--glass {
    background: var(--gradient-glass);
    color: var(--text-dark);
    border: 1px solid rgba(255, 255, 255, 0.2);
    backdrop-filter: var(--blur-lg);
}

.btn--glass:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: translateY(-1px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1);
}

.btn--small {
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: var(--font-size-sm);
}

.btn--large {
    padding: var(--spacing-lg) var(--spacing-2xl);
    font-size: var(--font-size-lg);
}

/* ===== CARDS MODERNES ===== */
.card {
    background: var(--background-light);
    border-radius: var(--border-radius-xl);
    padding: var(--spacing-xl);
    box-shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06);
    transition: all var(--transition-base);
    border: 1px solid var(--border-color);
    position: relative;
    overflow: hidden;
}

.card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--gradient-primary);
    transform: scaleX(0);
    transition: transform var(--transition-base);
}

.card:hover::before {
    transform: scaleX(1);
}

.card:hover {
    transform: translateY(-4px);
    box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
}

.card--glass {
    background: var(--gradient-glass);
    backdrop-filter: var(--blur-lg);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.card--gradient {
    background: var(--gradient-primary);
    color: white;
}

.card--gradient h3,
.card--gradient p {
    color: white;
}

/* ===== BADGES ===== */
.badge {
    display: inline-flex;
    align-items: center;
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--border-radius-full);
    font-size: var(--font-size-xs);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.badge--primary {
    background: var(--gradient-primary);
    color: white;
}

.badge--secondary {
    background: var(--gradient-secondary);
    color: white;
}

.badge--success {
    background: var(--accent-emerald);
    color: white;
}

.badge--warning {
    background: var(--secondary-color);
    color: white;
}

/* ===== ALERTS ===== */
.alert {
    padding: var(--spacing-md);
    border-radius: var(--border-radius-lg);
    border-left: 4px solid;
    margin-bottom: var(--spacing-md);
    backdrop-filter: var(--blur-sm);
}

.alert--success {
    background: rgba(16, 185, 129, 0.1);
    border-left-color: var(--accent-emerald);
    color: var(--accent-emerald);
}

.alert--warning {
    background: rgba(245, 158, 11, 0.1);
    border-left-color: var(--secondary-color);
    color: var(--secondary-color);
}

.alert--error {
    background: rgba(239, 68, 68, 0.1);
    border-left-color: #ef4444;
    color: #ef4444;
}

.alert--info {
    background: rgba(99, 102, 241, 0.1);
    border-left-color: var(--primary-color);
    color: var(--primary-color);
}

/* ===== LOADING SPINNER ===== */
.spinner {
    width: 40px;
    height: 40px;
    border: 4px solid var(--border-color);
    border-top: 4px solid var(--primary-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* ===== PROGRESS BAR ===== */
.progress {
    width: 100%;
    height: 8px;
    background: var(--background-gray);
    border-radius: var(--border-radius-full);
    overflow: hidden;
    position: relative;
}

.progress__bar {
    height: 100%;
    background: var(--gradient-primary);
    border-radius: var(--border-radius-full);
    transition: width var(--transition-base);
    position: relative;
}

.progress__bar::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
    animation: shimmer 2s infinite;
}

@keyframes shimmer {
    0% { transform: translateX(-100%); }
    100% { transform: translateX(100%); }
}

/* ===== TOOLTIPS ===== */
.tooltip {
    position: relative;
    display: inline-block;
}

.tooltip__content {
    position: absolute;
    bottom: 125%;
    left: 50%;
    transform: translateX(-50%);
    background: var(--background-dark);
    color: white;
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--border-radius-md);
    font-size: var(--font-size-sm);
    white-space: nowrap;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-base);
    z-index: 1000;
    backdrop-filter: var(--blur-md);
}

.tooltip__content::after {
    content: '';
    position: absolute;
    top: 100%;
    left: 50%;
    transform: translateX(-50%);
    border: 5px solid transparent;
    border-top-color: var(--background-dark);
}

.tooltip:hover .tooltip__content {
    opacity: 1;
    visibility: visible;
    transform: translateX(-50%) translateY(-5px);
}

/* ===== MODAL ===== */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    backdrop-filter: var(--blur-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-base);
}

.modal.active {
    opacity: 1;
    visibility: visible;
}

.modal__content {
    background: var(--background-light);
    border-radius: var(--border-radius-xl);
    padding: var(--spacing-2xl);
    max-width: 500px;
    width: 90%;
    max-height: 90vh;
    overflow-y: auto;
    position: relative;
    transform: scale(0.9);
    transition: transform var(--transition-base);
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
}

.modal.active .modal__content {
    transform: scale(1);
}

.modal__close {
    position: absolute;
    top: var(--spacing-md);
    right: var(--spacing-md);
    background: none;
    border: none;
    font-size: var(--font-size-xl);
    cursor: pointer;
    color: var(--text-light);
    transition: color var(--transition-base);
}

.modal__close:hover {
    color: var(--text-dark);
}

/* ===== TABS ===== */
.tabs {
    width: 100%;
}

.tabs__nav {
    display: flex;
    border-bottom: 2px solid var(--border-color);
    margin-bottom: var(--spacing-xl);
    gap: var(--spacing-sm);
}

.tabs__btn {
    padding: var(--spacing-md) var(--spacing-lg);
    background: none;
    border: none;
    cursor: pointer;
    font-weight: 600;
    color: var(--text-light);
    transition: all var(--transition-base);
    position: relative;
    border-radius: var(--border-radius-md) var(--border-radius-md) 0 0;
}

.tabs__btn::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--gradient-primary);
    transform: scaleX(0);
    transition: transform var(--transition-base);
}

.tabs__btn.active {
    color: var(--primary-color);
    background: rgba(99, 102, 241, 0.05);
}

.tabs__btn.active::after {
    transform: scaleX(1);
}

.tabs__content {
    display: none;
}

.tabs__content.active {
    display: block;
    animation: fadeIn 0.3s ease-out;
}

/* ===== ACCORDION ===== */
.accordion {
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-lg);
    overflow: hidden;
}

.accordion__item {
    border-bottom: 1px solid var(--border-color);
}

.accordion__item:last-child {
    border-bottom: none;
}

.accordion__header {
    padding: var(--spacing-lg);
    background: var(--background-gray);
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: background var(--transition-base);
}

.accordion__header:hover {
    background: rgba(99, 102, 241, 0.05);
}

.accordion__title {
    font-weight: 600;
    color: var(--text-dark);
    margin: 0;
}

.accordion__icon {
    transition: transform var(--transition-base);
    color: var(--primary-color);
}

.accordion__item.active .accordion__icon {
    transform: rotate(180deg);
}

.accordion__content {
    padding: 0 var(--spacing-lg);
    max-height: 0;
    overflow: hidden;
    transition: all var(--transition-base);
}

.accordion__item.active .accordion__content {
    padding: var(--spacing-lg);
    max-height: 500px;
}