/* ===================================
   COMPOSANTS RÉUTILISABLES
   =================================== */

/* ===== BOUTONS ===== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    padding: var(--space-3) var(--space-6);
    font-weight: 700;
    font-size: var(--font-base);
    line-height: 1;
    border-radius: var(--radius-full);
    cursor: pointer;
    transition: all var(--transition-fast);
    text-align: center;
    text-decoration: none;
    white-space: nowrap;
    position: relative;
    overflow: hidden;
}

.btn:focus {
    outline: none;
    box-shadow: 0 0 0 3px rgba(249, 115, 22, 0.3);
}

/* Bouton principal */
.btn--primary {
    background: var(--gradient-primary);
    color: white;
    border: none;
}

.btn--primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn--primary:active {
    transform: translateY(0);
}

.btn--primary::before {
    content: '';
    position: absolute;
    inset: 0;
    background: rgba(255, 255, 255, 0.2);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform var(--transition-slow);
}

.btn--primary:hover::before {
    transform: scaleX(1);
}

/* Bouton secondaire */
.btn--secondary {
    background: transparent;
    color: var(--text-primary);
    border: 2px solid rgba(255, 255, 255, 0.3);
}

.btn--secondary:hover {
    background: white;
    color: var(--bg-primary);
    border-color: white;
}

/* Bouton outline */
.btn--outline {
    background: transparent;
    color: var(--primary-orange);
    border: 2px solid var(--primary-orange);
}

.btn--outline:hover {
    background: var(--primary-orange);
    color: white;
}

/* Tailles de boutons */
.btn--sm {
    padding: var(--space-2) var(--space-4);
    font-size: var(--font-sm);
}

.btn--lg {
    padding: var(--space-4) var(--space-8);
    font-size: var(--font-lg);
}

.btn--hero {
    padding: var(--space-4) var(--space-8);
    font-size: var(--font-lg);
    font-weight: 800;
    letter-spacing: 0.05em;
}

.btn--hero-secondary {
    padding: var(--space-4) var(--space-8);
    font-size: var(--font-lg);
    font-weight: 600;
}

.btn--nav {
    padding: var(--space-3) var(--space-8);
    font-weight: 700;
    letter-spacing: 0.05em;
}

.btn--program {
    padding: var(--space-2) var(--space-4);
    font-size: var(--font-sm);
    font-weight: 600;
}

.btn--full {
    width: 100%;
}

/* ===== CARTES ===== */
.card {
    background: var(--bg-card);
    border-radius: var(--radius-2xl);
    padding: var(--space-6);
    border: 1px solid var(--border-primary);
    transition: all var(--transition-normal);
}

.card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-xl);
    border-color: var(--border-accent);
}

.card--gradient-border {
    position: relative;
    background: var(--bg-card);
    border: none;
}

.card--gradient-border::before {
    content: '';
    position: absolute;
    inset: 0;
    padding: 1px;
    background: var(--gradient-primary);
    border-radius: inherit;
    mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
    mask-composite: xor;
    -webkit-mask-composite: xor;
}

/* ===== BADGES ===== */
.badge {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-2) var(--space-4);
    font-size: var(--font-sm);
    font-weight: 600;
    border-radius: var(--radius-full);
    background: rgba(249, 115, 22, 0.2);
    color: var(--primary-orange);
    border: 1px solid rgba(249, 115, 22, 0.3);
}

.badge--success {
    background: rgba(16, 185, 129, 0.2);
    color: var(--success);
    border-color: rgba(16, 185, 129, 0.3);
}

.badge--warning {
    background: rgba(245, 158, 11, 0.2);
    color: var(--warning);
    border-color: rgba(245, 158, 11, 0.3);
}

.badge--error {
    background: rgba(239, 68, 68, 0.2);
    color: var(--error);
    border-color: rgba(239, 68, 68, 0.3);
}

/* ===== FORMULAIRES ===== */
.form-group {
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
}

.form-label {
    font-weight: 600;
    color: var(--text-primary);
    font-size: var(--font-sm);
}

.form-input,
.form-textarea,
.form-select {
    width: 100%;
    padding: var(--space-3) var(--space-4);
    background: var(--bg-secondary);
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-lg);
    color: var(--text-primary);
    font-size: var(--font-base);
    transition: all var(--transition-fast);
}

.form-input::placeholder,
.form-textarea::placeholder {
    color: var(--text-muted);
}

.form-input:focus,
.form-textarea:focus,
.form-select:focus {
    border-color: var(--primary-orange);
    box-shadow: 0 0 0 3px rgba(249, 115, 22, 0.1);
}

.form-textarea {
    resize: vertical;
    min-height: 120px;
}

.form-select {
    cursor: pointer;
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 20 20'%3e%3cpath stroke='%236b7280' stroke-linecap='round' stroke-linejoin='round' stroke-width='1.5' d='M6 8l4 4 4-4'/%3e%3c/svg%3e");
    background-position: right 8px center;
    background-repeat: no-repeat;
    background-size: 16px;
    padding-right: 40px;
    appearance: none;
}

.form-error {
    color: var(--error);
    font-size: var(--font-sm);
    margin-top: var(--space-1);
}

.form-success {
    color: var(--success);
    font-size: var(--font-sm);
    margin-top: var(--space-1);
}

/* ===== SECTIONS ===== */
.section-header {
    text-align: center;
    margin-bottom: var(--space-16);
}

.section-title {
    font-size: var(--font-5xl);
    font-weight: 900;
    letter-spacing: -0.025em;
    line-height: 1;
    margin-bottom: var(--space-6);
}

.section-subtitle {
    font-size: var(--font-xl);
    color: var(--text-muted);
    max-width: 48rem;
    margin: 0 auto;
    line-height: 1.6;
}

/* ===== CONTAINER ===== */
.container {
    width: 100%;
    max-width: var(--container-xl);
    margin: 0 auto;
    padding: 0 var(--space-6);
}

.container--sm {
    max-width: var(--container-sm);
}

.container--md {
    max-width: var(--container-md);
}

.container--lg {
    max-width: var(--container-lg);
}

.container--xl {
    max-width: var(--container-xl);
}

.container--2xl {
    max-width: var(--container-2xl);
}

.container--full {
    max-width: none;
}

/* ===== GRILLES ===== */
.grid {
    display: grid;
    gap: var(--space-6);
}

.grid--2 {
    grid-template-columns: repeat(2, 1fr);
}

.grid--3 {
    grid-template-columns: repeat(3, 1fr);
}

.grid--4 {
    grid-template-columns: repeat(4, 1fr);
}

.grid--auto {
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
}

.grid--responsive {
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

/* ===== FLEXBOX ===== */
.flex {
    display: flex;
}

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

.flex--between {
    justify-content: space-between;
    align-items: center;
}

.flex--col {
    flex-direction: column;
}

.flex--wrap {
    flex-wrap: wrap;
}

.flex--gap-2 {
    gap: var(--space-2);
}

.flex--gap-4 {
    gap: var(--space-4);
}

.flex--gap-6 {
    gap: var(--space-6);
}

/* ===== LOADER ===== */
.loader {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    border-top-color: var(--primary-orange);
    animation: spin 1s linear infinite;
}

.loader--lg {
    width: 40px;
    height: 40px;
    border-width: 4px;
}

/* ===== OVERLAY ===== */
.overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(4px);
    z-index: var(--z-modal-backdrop);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-normal);
}

.overlay--active {
    opacity: 1;
    visibility: visible;
}

/* ===== MODAL ===== */
.modal {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%) scale(0.9);
    background: var(--bg-card);
    border-radius: var(--radius-2xl);
    padding: var(--space-8);
    max-width: 90vw;
    max-height: 90vh;
    overflow-y: auto;
    z-index: var(--z-modal);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-normal);
}

.modal--active {
    opacity: 1;
    visibility: visible;
    transform: translate(-50%, -50%) scale(1);
}

/* ===== TOOLTIPS ===== */
.tooltip {
    position: relative;
}

.tooltip::before {
    content: attr(data-tooltip);
    position: absolute;
    bottom: 100%;
    left: 50%;
    transform: translateX(-50%);
    background: var(--bg-secondary);
    color: var(--text-primary);
    padding: var(--space-2) var(--space-3);
    border-radius: var(--radius-md);
    font-size: var(--font-sm);
    white-space: nowrap;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-fast);
    z-index: var(--z-tooltip);
    margin-bottom: var(--space-2);
}

.tooltip::after {
    content: '';
    position: absolute;
    bottom: 100%;
    left: 50%;
    transform: translateX(-50%);
    border: 4px solid transparent;
    border-top-color: var(--bg-secondary);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-fast);
    z-index: var(--z-tooltip);
}

.tooltip:hover::before,
.tooltip:hover::after {
    opacity: 1;
    visibility: visible;
}

/* ===== RESPONSIVE ===== */
@media (max-width: 768px) {
    .container {
        padding: 0 var(--space-4);
    }
    
    .section-title {
        font-size: var(--font-4xl);
    }
    
    .section-subtitle {
        font-size: var(--font-lg);
    }
    
    .grid--2,
    .grid--3,
    .grid--4 {
        grid-template-columns: 1fr;
    }
    
    .btn--hero,
    .btn--hero-secondary {
        padding: var(--space-3) var(--space-6);
        font-size: var(--font-base);
    }
    
    .flex--col-mobile {
        flex-direction: column;
    }
    
    .modal {
        margin: var(--space-4);
        padding: var(--space-6);
    }
}

@media (max-width: 640px) {
    .section-header {
        margin-bottom: var(--space-12);
    }
    
    .grid--responsive {
        grid-template-columns: 1fr;
    }
}