/* projet-chat — tunnel projet conversationnel.
   Écrit avec les tokens sémantiques (--surface, --text…) : le mode sombre
   est couvert sans règle dédiée. */

/* Libellé réservé aux lecteurs d'écran (pas encore dans le CSS global). */
.pchat-panel .sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* ── Hero ─────────────────────────────────────────────── */

.pchat-hero {
    background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 55%, var(--accent) 160%);
    color: #fff;
    padding: 6.5rem 0 4rem;
    text-align: center;
}

.pchat-hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.45rem;
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid rgba(255, 255, 255, 0.18);
    color: rgba(255, 255, 255, 0.9);
    font-size: 0.82rem;
    font-weight: 600;
    letter-spacing: 0.04em;
    text-transform: uppercase;
    padding: 0.45rem 1.1rem;
    border-radius: 999px;
    margin-bottom: 1.5rem;
}

.pchat-hero h1 {
    font-size: clamp(1.9rem, 4vw, 3rem);
    line-height: 1.15;
    margin: 0 0 1rem;
    color: #fff;
}

.pchat-hero-sub {
    max-width: 46rem;
    margin: 0 auto 1.75rem;
    font-size: 1.08rem;
    color: rgba(255, 255, 255, 0.85);
}

.pchat-hero-advantages {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 0.6rem 1.4rem;
    font-size: 0.92rem;
    color: rgba(255, 255, 255, 0.9);
}

.pchat-hero-advantages span {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
}

.pchat-hero-advantages i {
    color: var(--accent);
    font-size: 1.05rem;
}

/* ── Mise en page ─────────────────────────────────────── */

.pchat-section {
    background: var(--surface-alt);
    padding: 3rem 1.25rem 5rem;
}

.pchat-wrapper {
    max-width: 1180px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: minmax(0, 1.6fr) minmax(0, 1fr);
    gap: 1.75rem;
    align-items: start;
}

/* ── Panneau conversation ─────────────────────────────── */

.pchat-panel {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.pchat-head {
    display: flex;
    align-items: center;
    gap: 0.85rem;
    padding: 1rem 1.25rem;
    border-bottom: 1px solid var(--border);
}

.pchat-avatar {
    width: 42px;
    height: 42px;
    flex: 0 0 42px;
    border-radius: 50%;
    display: grid;
    place-items: center;
    background: var(--brand);
    color: var(--brand-contrast);
    font-size: 1.25rem;
}

.pchat-head-id {
    display: flex;
    flex-direction: column;
    line-height: 1.3;
    flex: 1 1 auto;
    min-width: 0;
}

.pchat-head-id strong {
    color: var(--text-strong);
}

.pchat-head-id span {
    font-size: 0.85rem;
    color: var(--text-muted);
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
}

.pchat-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--success);
    display: inline-block;
}

.pchat-restart {
    background: none;
    border: 1px solid var(--border);
    color: var(--text-muted);
    border-radius: 999px;
    padding: 0.35rem 0.8rem;
    font-size: 0.82rem;
    cursor: pointer;
    white-space: nowrap;
}

.pchat-restart:hover {
    color: var(--brand);
    border-color: var(--brand);
}

.pchat-progress {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem 1.25rem;
    border-bottom: 1px solid var(--border);
    font-size: 0.82rem;
    color: var(--text-muted);
}

.pchat-progress-track {
    flex: 1 1 auto;
    height: 6px;
    background: var(--surface-inset);
    border-radius: 999px;
    overflow: hidden;
}

.pchat-progress-fill {
    height: 100%;
    width: 0;
    background: linear-gradient(90deg, var(--primary), var(--accent));
    border-radius: 999px;
    transition: width 0.4s ease;
}

/* Messages */

.pchat-messages {
    padding: 1.5rem 1.25rem;
    display: flex;
    flex-direction: column;
    gap: 1rem;
    min-height: 340px;
    max-height: 58vh;
    overflow-y: auto;
    overscroll-behavior: contain;
}

.pchat-msg {
    display: flex;
    gap: 0.65rem;
    max-width: 88%;
}

.pchat-msg-user {
    margin-left: auto;
    flex-direction: row-reverse;
}

.pchat-msg-avatar {
    width: 32px;
    height: 32px;
    flex: 0 0 32px;
    border-radius: 50%;
    display: grid;
    place-items: center;
    background: var(--surface-inset);
    color: var(--brand);
    font-size: 1rem;
}

.pchat-msg-content {
    background: var(--surface-inset);
    color: var(--text);
    padding: 0.8rem 1rem;
    border-radius: var(--radius-lg);
    border-bottom-left-radius: 4px;
    white-space: pre-wrap;
    line-height: 1.55;
}

.pchat-msg-user .pchat-msg-content {
    background: var(--brand);
    color: var(--brand-contrast);
    border-bottom-left-radius: var(--radius-lg);
    border-bottom-right-radius: 4px;
}

/* Indicateur de frappe */

.pchat-typing {
    display: flex;
    gap: 5px;
    padding: 0 1.25rem 0.75rem 3.9rem;
}

.pchat-typing span {
    width: 7px;
    height: 7px;
    border-radius: 50%;
    background: var(--text-muted);
    animation: pchat-bounce 1.2s infinite ease-in-out;
}

.pchat-typing span:nth-child(2) { animation-delay: 0.15s; }
.pchat-typing span:nth-child(3) { animation-delay: 0.3s; }

@keyframes pchat-bounce {
    0%, 60%, 100% { transform: translateY(0); opacity: 0.4; }
    30% { transform: translateY(-5px); opacity: 1; }
}

/* Réponses rapides */

.pchat-suggestions {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    padding: 0 1.25rem;
}

.pchat-suggestions:not(:empty) {
    padding-bottom: 0.75rem;
}

.pchat-chip {
    background: var(--surface);
    border: 1px solid var(--border-strong);
    color: var(--text);
    border-radius: 999px;
    padding: 0.45rem 0.9rem;
    font-size: 0.88rem;
    cursor: pointer;
    transition: all 0.15s ease;
}

.pchat-chip:hover {
    border-color: var(--brand);
    color: var(--brand);
}

.pchat-chip.is-selected {
    background: var(--brand);
    border-color: var(--brand);
    color: var(--brand-contrast);
}

.pchat-chip-validate {
    background: var(--success);
    border-color: var(--success);
    color: #fff;
    font-weight: 700;
    min-width: 3rem;
}

/* Raccourci « j'ai fini » */

.pchat-finish {
    padding: 0 1.25rem 0.85rem;
}

.pchat-finish-btn {
    background: none;
    border: 1px dashed var(--border-strong);
    color: var(--text-muted);
    border-radius: var(--radius);
    padding: 0.5rem 0.9rem;
    font-size: 0.85rem;
    cursor: pointer;
    width: 100%;
}

.pchat-finish-btn:hover {
    border-color: var(--success);
    color: var(--success);
}

/* Erreur */

.pchat-error {
    margin: 0 1.25rem 0.75rem;
    padding: 0.7rem 0.9rem;
    border-radius: var(--radius-sm);
    background: rgba(239, 68, 68, 0.1);
    border: 1px solid rgba(239, 68, 68, 0.35);
    color: var(--danger);
    font-size: 0.9rem;
}

/* Saisie */

.pchat-input {
    display: flex;
    align-items: flex-end;
    gap: 0.6rem;
    padding: 0.9rem 1.25rem;
    border-top: 1px solid var(--border);
}

.pchat-input.is-hidden {
    display: none;
}

.pchat-input textarea {
    flex: 1 1 auto;
    resize: none;
    border: 1px solid var(--border-strong);
    border-radius: var(--radius);
    background: var(--surface);
    color: var(--text);
    padding: 0.7rem 0.9rem;
    font: inherit;
    line-height: 1.45;
    max-height: 140px;
}

.pchat-input textarea:focus {
    outline: none;
    border-color: var(--brand);
    box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.15);
}

.pchat-send {
    flex: 0 0 44px;
    width: 44px;
    height: 44px;
    border: none;
    border-radius: 50%;
    background: var(--brand);
    color: var(--brand-contrast);
    font-size: 1.15rem;
    cursor: pointer;
    display: grid;
    place-items: center;
}

.pchat-send:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.pchat-fallback {
    margin: 0;
    padding: 0 1.25rem 1.1rem;
    font-size: 0.85rem;
    color: var(--text-muted);
}

.pchat-fallback a {
    color: var(--brand);
}

/* ── Brief en direct ──────────────────────────────────── */

.pchat-brief {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    padding: 1.5rem;
    position: sticky;
    top: 6rem;
    max-height: calc(100vh - 8rem);
    overflow-y: auto;
}

.pchat-brief h2 {
    font-size: 1.05rem;
    margin: 0 0 1rem;
    color: var(--text-strong);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.pchat-brief h2 i {
    color: var(--brand);
}

.pchat-brief-empty {
    color: var(--text-muted);
    font-size: 0.9rem;
    margin: 0;
}

.pchat-brief-list {
    margin: 0;
    display: grid;
    gap: 0.15rem;
}

.pchat-brief-list dt {
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    color: var(--text-muted);
    margin-top: 0.8rem;
}

.pchat-brief-list dd {
    margin: 0;
    color: var(--text-strong);
    font-weight: 500;
    overflow-wrap: anywhere;
}

.pchat-submit-card {
    margin-top: 1.5rem;
    padding: 1.25rem;
    border-radius: var(--radius);
    background: var(--surface-alt);
    border: 1px solid var(--border);
}

.pchat-submit-card h3 {
    margin: 0 0 0.5rem;
    font-size: 1rem;
    color: var(--text-strong);
}

.pchat-submit-card p {
    margin: 0 0 1rem;
    font-size: 0.9rem;
    color: var(--text-muted);
}

.pchat-consent {
    display: flex;
    gap: 0.6rem;
    align-items: flex-start;
    font-size: 0.88rem;
    color: var(--text);
    margin-bottom: 1rem;
    cursor: pointer;
}

.pchat-consent input {
    width: 18px;
    height: 18px;
    margin-top: 2px;
    flex: 0 0 18px;
}

.pchat-consent a {
    color: var(--brand);
}

.pchat-submit {
    width: 100%;
}

.pchat-reassure {
    display: flex;
    gap: 0.55rem;
    align-items: flex-start;
    margin-top: 1.25rem;
    padding-top: 1.25rem;
    border-top: 1px solid var(--border);
    font-size: 0.83rem;
    color: var(--text-muted);
}

.pchat-reassure i {
    color: var(--success);
    font-size: 1rem;
}

/* ── Responsive ───────────────────────────────────────── */

@media (max-width: 960px) {
    .pchat-wrapper {
        grid-template-columns: 1fr;
    }

    .pchat-brief {
        position: static;
        max-height: none;
        order: 2;
    }

    .pchat-panel {
        order: 1;
    }
}

@media (max-width: 600px) {
    .pchat-hero {
        padding: 5rem 0 3rem;
    }

    .pchat-section {
        padding: 1.5rem 0.75rem 3rem;
    }

    .pchat-messages {
        max-height: none;
        min-height: 300px;
        padding: 1.1rem 0.9rem;
    }

    .pchat-msg {
        max-width: 95%;
    }

    .pchat-head,
    .pchat-progress,
    .pchat-input,
    .pchat-suggestions {
        padding-left: 0.9rem;
        padding-right: 0.9rem;
    }
}