/* ============================================================
   Partage-Thicar — components.css
   Boutons, champs, cartes, modales, toasts, filtres
   ============================================================ */

/* ============================================================
   Boutons
   ============================================================ */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    padding: 0.625rem var(--space-5);
    border-radius: var(--radius-md);
    font-weight: 600;
    font-size: 0.9rem;
    font-family: inherit;
    cursor: pointer;
    border: none;
    transition: background var(--transition-fast),
                transform var(--transition-fast),
                box-shadow var(--transition-fast),
                opacity var(--transition-fast);
    white-space: nowrap;
    user-select: none;
    -webkit-tap-highlight-color: transparent;
}

.btn:active {
    transform: scale(0.97);
}

.btn:disabled {
    opacity: 0.55;
    cursor: not-allowed;
    transform: none;
}

/* Primaire */
.btn--primary {
    background: var(--c-primary);
    color: white;
    box-shadow: 0 2px 8px rgba(45,91,227,.25);
}
.btn--primary:hover:not(:disabled) {
    background: var(--c-primary-dark);
    box-shadow: 0 4px 14px rgba(45,91,227,.35);
}

/* Secondaire / Ghost */
.btn--ghost {
    background: transparent;
    color: var(--c-text-muted);
    border: 1px solid var(--c-border);
}
.btn--ghost:hover:not(:disabled) {
    background: var(--c-surface-2);
    color: var(--c-text);
    border-color: var(--c-text-light);
}

/* Danger */
.btn--danger {
    background: var(--c-error-light);
    color: var(--c-error);
}
.btn--danger:hover:not(:disabled) {
    background: var(--c-error);
    color: white;
}

/* Pleine largeur */
.btn--full {
    width: 100%;
}

/* Petit */
.btn--sm {
    padding: 0.4rem var(--space-3);
    font-size: 0.8125rem;
    border-radius: var(--radius-sm);
}

/* Icône seule */
.btn--icon {
    width: 36px;
    height: 36px;
    padding: 0;
    border-radius: var(--radius-sm);
    font-size: 1rem;
}

/* Loading state */
.btn--loading {
    position: relative;
    color: transparent !important;
    pointer-events: none;
}
.btn--loading::after {
    content: '';
    position: absolute;
    width: 16px;
    height: 16px;
    border: 2px solid rgba(255,255,255,.4);
    border-top-color: white;
    border-radius: 50%;
    animation: spin 0.7s linear infinite;
}
.btn--ghost.btn--loading::after {
    border-color: rgba(0,0,0,.15);
    border-top-color: var(--c-text-muted);
}

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

/* ============================================================
   Champs de formulaire avec label flottant
   ============================================================ */
.field {
    position: relative;
    margin-bottom: var(--space-4);
}

.field__input {
    width: 100%;
    padding: 1.375rem var(--space-4) 0.5rem;
    border: 1.5px solid var(--c-border);
    border-radius: var(--radius-md);
    background: var(--c-surface);
    color: var(--c-text);
    font-size: 0.9375rem;
    transition: border-color var(--transition-fast),
                box-shadow var(--transition-fast);
    outline: none;
    appearance: none;
}

.field__input::placeholder {
    color: transparent; /* Masqué par défaut — sert uniquement pour :placeholder-shown */
}

.field__input:focus {
    border-color: var(--c-border-focus);
    box-shadow: 0 0 0 3px var(--c-primary-glow);
}

.field__input.is-error {
    border-color: var(--c-error);
    box-shadow: 0 0 0 3px rgba(220,38,38,.1);
}

/* Label flottant */
.field__label {
    position: absolute;
    left: var(--space-4);
    top: 50%;
    transform: translateY(-50%);
    font-size: 0.9375rem;
    color: var(--c-text-muted);
    pointer-events: none;
    transition: top var(--transition-fast),
                transform var(--transition-fast),
                font-size var(--transition-fast),
                color var(--transition-fast);
    transform-origin: left;
}

/* Label monté : focus OU valeur saisie */
.field__input:focus + .field__label,
.field__input:not(:placeholder-shown) + .field__label {
    top: 0.55rem;
    transform: translateY(0);
    font-size: 0.72rem;
    color: var(--c-primary);
    font-weight: 600;
    letter-spacing: 0.02em;
}

.field__input.is-error:focus + .field__label,
.field__input.is-error:not(:placeholder-shown) + .field__label {
    color: var(--c-error);
}

/* Message d'erreur */
.field__error {
    display: none;
    font-size: 0.8rem;
    color: var(--c-error);
    margin-top: var(--space-1);
    padding-left: var(--space-1);
}

.field__error.is-visible {
    display: block;
    animation: fade-in 0.2s ease;
}

/* Alerte globale de formulaire */
.form-alert {
    padding: var(--space-3) var(--space-4);
    border-radius: var(--radius-md);
    font-size: 0.875rem;
    margin-bottom: var(--space-4);
    display: none;
}

.form-alert.is-visible {
    display: block;
    animation: fade-in 0.2s ease;
}

.form-alert--error {
    background: var(--c-error-light);
    color: var(--c-error);
    border: 1px solid rgba(220,38,38,.2);
}

/* ============================================================
   Cartes de document
   ============================================================ */
.doc-card {
    background: var(--c-surface);
    border: 1px solid var(--c-border);
    border-radius: var(--radius-lg);
    padding: var(--space-5);
    cursor: pointer;
    transition: box-shadow var(--transition-base),
                transform var(--transition-base),
                border-color var(--transition-base);
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
    text-align: left;
    width: calc(100% - 3rem);
    position: relative;
    overflow: hidden;
}

.doc-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--c-primary);
    transform: scaleX(0);
    transition: transform var(--transition-base);
    transform-origin: left;
}

.doc-card:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
    border-color: var(--c-primary-light);
}

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

.doc-card__icon {
    width: 40px;
    height: 40px;
    background: var(--c-primary-light);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.15rem;
}

.doc-card__title {
    font-weight: 600;
    font-size: 0.95rem;
    color: var(--c-text);
    line-height: 1.3;
    overflow: hidden;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
}

.doc-card__meta {
    font-size: 0.78rem;
    color: var(--c-text-muted);
    display: flex;
    align-items: center;
    gap: var(--space-2);
    margin-top: auto;
}

.doc-card__actions {
    position: absolute;
    top: var(--space-3);
    right: var(--space-3);
    display: flex;
    gap: var(--space-1);
    opacity: 0;
    transition: opacity var(--transition-fast);
}

.doc-card:hover .doc-card__actions {
    opacity: 1;
}

/* Carte "Nouveau document" */
.doc-card--new {
    border: 2px dashed var(--c-border);
    background: transparent;
    align-items: center;
    justify-content: center;
    color: var(--c-text-muted);
    min-height: 140px;
    gap: var(--space-2);
}

.doc-card--new:hover {
    border-color: var(--c-primary);
    color: var(--c-primary);
    background: var(--c-primary-light);
    transform: translateY(-2px);
}

.doc-card--new:hover::before {
    display: none;
}

.doc-card--new__icon {
    font-size: 1.5rem;
    line-height: 1;
}

.doc-card--new__text {
    font-size: 0.875rem;
    font-weight: 600;
}

/* ============================================================
   Onglets de filtre
   ============================================================ */
.filter-tab {
    padding: var(--space-2) var(--space-4);
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--c-text-muted);
    border-bottom: 2px solid transparent;
    margin-bottom: -2px;
    cursor: pointer;
    transition: color var(--transition-fast),
                border-color var(--transition-fast);
    background: none;
    border-radius: 0;
    white-space: nowrap;
}

.filter-tab:hover {
    color: var(--c-text);
}

.filter-tab.is-active {
    color: var(--c-primary);
    border-bottom-color: var(--c-primary);
    font-weight: 600;
}

/* ============================================================
   Modale
   ============================================================ */
.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(15, 23, 42, 0.5);
    backdrop-filter: blur(4px);
    z-index: 200;
    display: flex;
    align-items: flex-end;
    justify-content: center;
    padding: 0;
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--transition-base),
                visibility var(--transition-base);
}

.modal-overlay.is-open {
    opacity: 1;
    visibility: visible;
}

.modal {
    background: var(--c-surface);
    border-radius: var(--radius-xl) var(--radius-xl) 0 0;
    padding: var(--space-6);
    width: 100%;
    max-width: 480px;
    transform: translateY(100%);
    transition: transform var(--transition-slow);
}

.modal-overlay.is-open .modal {
    transform: translateY(0);
}

.modal__header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--space-5);
}

.modal__title {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--c-text);
}

.modal__close {
    width: 32px;
    height: 32px;
    border-radius: var(--radius-full);
    background: var(--c-surface-2);
    border: 1px solid var(--c-border);
    font-size: 1rem;
    color: var(--c-text-muted);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: background var(--transition-fast);
}

.modal__close:hover {
    background: var(--c-border);
    color: var(--c-text);
}

.modal__actions {
    display: flex;
    gap: var(--space-3);
    margin-top: var(--space-5);
}

.modal__actions .btn {
    flex: 1;
}

/* ============================================================
   Toasts (notifications)
   ============================================================ */
.toast-container {
    position: fixed;
    bottom: var(--space-6);
    left: 50%;
    transform: translateX(-50%);
    z-index: 300;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-2);
    pointer-events: none;
    width: calc(100% - var(--space-8));
    max-width: 360px;
}

.toast {
    background: var(--c-text);
    color: white;
    padding: var(--space-3) var(--space-4);
    border-radius: var(--radius-md);
    font-size: 0.875rem;
    font-weight: 500;
    box-shadow: var(--shadow-lg);
    width: 100%;
    text-align: center;
    animation: toast-in 0.3s ease both;
    pointer-events: all;
}

.toast--success { background: var(--c-success); }
.toast--error   { background: var(--c-error); }
.toast--warning { background: var(--c-warning); }

.toast.is-leaving {
    animation: toast-out 0.3s ease both;
}

@keyframes toast-in {
    from { opacity: 0; transform: translateY(10px) scale(.95); }
    to   { opacity: 1; transform: translateY(0) scale(1); }
}

@keyframes toast-out {
    from { opacity: 1; transform: translateY(0) scale(1); }
    to   { opacity: 0; transform: translateY(10px) scale(.95); }
}

/* ============================================================
   Animations communes
   ============================================================ */
@keyframes fade-in {
    from { opacity: 0; }
    to   { opacity: 1; }
}

/* ============================================================
   Responsive — tablette+
   ============================================================ */
@media (min-width: 640px) {
    .modal-overlay {
        align-items: center;
        padding: var(--space-4);
    }

    .modal {
        border-radius: var(--radius-xl);
        transform: translateY(20px) scale(0.97);
    }

    .modal-overlay.is-open .modal {
        transform: translateY(0) scale(1);
    }
}