:root {
    --theme-color: 0, 49, 83;       /* Bleu foncé: rgb(0, 49, 83) */
    --title-color: 32, 35, 38;      /* Gris très foncé: rgb(32, 35, 38) */
    --content-color: 153, 153, 153; /* Gris moyen: rgb(153, 153, 153) */
    --secondary-color: 124, 185, 232; /* Bleu clair: rgb(124, 185, 232) */
}

/* Styles généraux */
.chat-detail-page {
    padding: 15px 15px 100px;
    min-height: 100vh;
    background: #f8f9fa;
}

/* Header fixe */
.chat-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: white;
    border-bottom: 1px solid #e9ecef;
    padding: 15px;
    z-index: 1000;
    display: flex;
    align-items: center;
    gap: 12px;
    box-shadow: 0 2px 8px rgba(var(--theme-color), 0.08);
}

/* Bandeau de progression des étapes */
.steps-navigation {
    background: white;
    border-radius: 12px;
    padding: 16px 20px 10px 20px;
    margin-bottom: 10px;
    box-shadow: 0 2px 8px rgba(var(--theme-color), 0.08);
    position: relative;
    z-index: 999;
}
.steps-progress {
    margin-bottom: 10px;
}
.progress-bar {
    height: 6px;
    background-color: #e0e0e0;
    border-radius: 3px;
    margin-bottom: 8px;
    overflow: hidden;
}
.progress-fill {
    height: 100%;
    background-color: rgb(var(--theme-color));
    border-radius: 3px;
    transition: width 0.3s ease;
}
.steps-labels {
    display: flex;
    justify-content: space-between;
    position: relative;
}
.step-label {
    font-size: 11px;
    color: rgb(var(--content-color));
    text-align: center;
    position: relative;
    flex: 1;
}
.step-label.active {
    color: rgb(var(--theme-color));
    font-weight: 600;
}
.current-step-info {
    text-align: center;
    padding-top: 6px;
    border-top: 1px solid #eee;
    font-size: 13px;
    color: rgb(var(--content-color));
}
.current-step-info strong {
    color: rgb(var(--title-color));
    font-size: 15px;
}

.back-btn {
    background: none;
    border: none;
    font-size: 20px;
    color: rgb(var(--theme-color));
    cursor: pointer;
    padding: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    transition: all 0.3s;
}

.back-btn:hover {
    background: rgba(var(--theme-color), 0.1);
    transform: scale(1.1);
}

.user-info {
    flex: 1;
    display: flex;
    align-items: center;
    gap: 12px;
}

.user-avatar {
    width: 45px;
    height: 45px;
    border-radius: 50%;
    overflow: hidden;
    background: rgba(var(--theme-color), 0.1);
    flex-shrink: 0;
    border: 2px solid white;
    box-shadow: 0 2px 8px rgba(var(--theme-color), 0.08);
}

.user-avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.user-details {
    flex: 1;
}

.user-name {
    font-size: 16px;
    font-weight: 600;
    color: rgb(var(--title-color));
    margin-bottom: 2px;
    display: flex;
    align-items: center;
    gap: 6px;
}

.user-status {
    font-size: 12px;
    color: rgb(var(--secondary-color));
    display: flex;
    align-items: center;
    gap: 4px;
}

.certified-badge {
    background: rgb(var(--theme-color));
    color: white;
    padding: 2px 8px;
    border-radius: 12px;
    font-size: 9px;
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: 3px;
}

.header-actions {
    display: flex;
    gap: 8px;
}

.header-action-btn {
    background: rgba(var(--theme-color), 0.1);
    border: none;
    font-size: 18px;
    color: rgb(var(--theme-color));
    cursor: pointer;
    padding: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    transition: all 0.3s;
    width: 44px;
    height: 44px;
}

.header-action-btn:hover {
    background: rgba(var(--theme-color), 0.2);
    color: rgb(var(--theme-color));
    transform: translateY(-2px);
}

/* Barre du produit */
.product-bar {
    position: fixed;
    top: 76px;
    left: 0;
    right: 0;
    background: white;
    border-bottom: 1px solid #e9ecef;
    padding: 12px 15px;
    z-index: 999;
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: 0 2px 8px rgba(var(--theme-color), 0.08);
    backdrop-filter: blur(10px);
}

.product-info {
    display: flex;
    align-items: center;
    gap: 12px;
    flex: 1;
    cursor: pointer;
    transition: all 0.3s;
}

.product-info:hover {
    opacity: 0.8;
}

.product-image {
    width: 60px;
    height: 60px;
    border-radius: 10px;
    overflow: hidden;
    background: rgba(var(--theme-color), 0.1);
    flex-shrink: 0;
    border: 2px solid white;
    box-shadow: 0 4px 12px rgba(var(--theme-color), 0.08);
}

.product-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.product-details {
    flex: 1;
    overflow: hidden;
}

.product-title {
    font-size: 14px;
    font-weight: 600;
    color: rgb(var(--title-color));
    margin-bottom: 4px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    line-height: 1.3;
}

.product-price {
    font-size: 16px;
    font-weight: 700;
    color: rgb(var(--theme-color));
    display: flex;
    align-items: center;
    gap: 5px;
}

.price-discounted {
    color: rgb(var(--content-color));
    text-decoration: line-through;
    font-size: 13px;
    font-weight: 500;
}

.offer-btn {
    background: rgb(var(--theme-color));
    color: white;
    border: none;
    padding: 10px 20px;
    border-radius: 25px;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
    white-space: nowrap;
    flex-shrink: 0;
    box-shadow: 0 4px 12px rgba(var(--theme-color), 0.2);
    display: flex;
    align-items: center;
    gap: 8px;
}

.offer-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(var(--theme-color), 0.3);
    background: rgba(var(--theme-color), 0.9);
}

.offer-btn:disabled {
    background: rgb(var(--content-color));
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
}

/* Zone de chat */
.chat-container {
    padding-top: 150px;
    padding-bottom: 100px;
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.date-separator {
    text-align: center;
    margin: 20px 0;
    position: relative;
}

.date-separator::before {
    content: '';
    position: absolute;
    left: 15px;
    right: 15px;
    top: 50%;
    height: 1px;
    background: linear-gradient(90deg, transparent, #e9ecef, transparent);
}

.date-label {
    background: white;
    padding: 6px 16px;
    border-radius: 20px;
    font-size: 12px;
    color: rgb(var(--content-color));
    position: relative;
    display: inline-block;
    border: 1px solid #e9ecef;
    box-shadow: 0 2px 6px rgba(var(--theme-color), 0.05);
}

/* Messages */
.message-container {
    display: flex;
    flex-direction: column;
    max-width: 85%;
    animation: messageAppear 0.3s ease-out;
}

@keyframes messageAppear {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.message-container.sender {
    align-self: flex-end;
    align-items: flex-end;
}

.message-container.receiver {
    align-self: flex-start;
    align-items: flex-start;
}

.message-bubble {
    padding: 12px 16px;
    border-radius: 18px;
    font-size: 14px;
    line-height: 1.4;
    position: relative;
    box-shadow: 0 2px 8px rgba(var(--theme-color), 0.08);
    word-wrap: break-word;
    animation: bubbleAppear 0.3s ease-out;
}

@keyframes bubbleAppear {
    from {
        opacity: 0;
        transform: scale(0.9);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

.message-container.sender .message-bubble {
    background: rgb(var(--theme-color));
    color: white;
    border-bottom-right-radius: 4px;
}

.message-container.receiver .message-bubble {
    background: white;
    color: rgb(var(--title-color));
    border: 1px solid #e9ecef;
    border-bottom-left-radius: 4px;
}

.message-time {
    font-size: 11px;
    color: rgb(var(--content-color));
    margin-top: 4px;
    padding: 0 4px;
    display: flex;
    align-items: center;
    gap: 4px;
}

.message-container.sender .message-time {
    text-align: right;
}

.message-container.receiver .message-time {
    text-align: left;
}

.message-read {
    color: rgb(var(--secondary-color));
    font-size: 10px;
}

/* Message système (offre, transaction) */
.system-message {
    background: white;
    border: 1px solid #e9ecef;
    border-radius: 16px;
    padding: 20px;
    width: 90%;
    margin: 20px auto;
    text-align: center;
    box-shadow: 0 4px 20px rgba(var(--theme-color), 0.08);
    animation: systemMessageAppear 0.4s ease-out;
}

@keyframes systemMessageAppear {
    from {
        opacity: 0;
        transform: translateY(20px) scale(0.95);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

.system-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 16px;
    padding-bottom: 12px;
    border-bottom: 1px solid #e9ecef;
}

.system-title {
    font-size: 15px;
    font-weight: 600;
    color: rgb(var(--title-color));
    margin: 0;
    display: flex;
    align-items: center;
    gap: 8px;
}

.system-status {
    display: inline-flex;
    padding: 6px 12px;
    border-radius: 20px;
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 0.3px;
    text-transform: uppercase;
    align-items: center;
    gap: 4px;
}

.status-pending {
    background: rgba(var(--secondary-color), 0.15);
    color: rgb(var(--secondary-color));
    border: 1px solid rgba(var(--secondary-color), 0.3);
}

.status-accepted {
    background: rgba(var(--theme-color), 0.15);
    color: rgb(var(--theme-color));
    border: 1px solid rgba(var(--theme-color), 0.3);
}

.status-rejected {
    background: rgba(220, 53, 69, 0.15);
    color: #dc3545;
    border: 1px solid rgba(220, 53, 69, 0.3);
}

.status-negotiating {
    background: rgba(var(--secondary-color), 0.15);
    color: rgb(var(--secondary-color));
    border: 1px solid rgba(var(--secondary-color), 0.3);
}

.status-completed {
    background: rgba(32, 201, 151, 0.15);
    color: #20c997;
    border: 1px solid rgba(32, 201, 151, 0.3);
}

.system-content {
    margin-bottom: 16px;
}

.offer-price {
    font-size: 28px;
    font-weight: 700;
    color: rgb(var(--theme-color));
    margin: 12px 0;
    display: flex;
    align-items: baseline;
    justify-content: center;
    gap: 10px;
}

.original-price {
    font-size: 14px;
    color: rgb(var(--content-color));
    text-decoration: line-through;
}

.discount-badge {
    background: rgb(var(--theme-color));
    color: white;
    padding: 3px 8px;
    border-radius: 12px;
    font-size: 12px;
    font-weight: 600;
    margin-left: 8px;
}

.offer-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 16px;
    justify-content: center;
}

.offer-action-btn {
    flex: 1;
    padding: 12px;
    border-radius: 12px;
    border: none;
    font-size: 13px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    min-width: 120px;
}

.accept-offer {
    background: rgb(var(--theme-color));
    color: white;
}

.accept-offer:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(var(--theme-color), 0.3);
    background: rgba(var(--theme-color), 0.9);
}

.reject-offer {
    background: #dc3545;
    color: white;
}

.reject-offer:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(220, 53, 69, 0.3);
    background: #c82333;
}

.counter-offer {
    background: rgb(var(--secondary-color));
    color: white;
}

.counter-offer:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(var(--secondary-color), 0.3);
    background: rgba(var(--secondary-color), 0.9);
}

.view-details {
    background: rgb(var(--theme-color));
    color: white;
}

.view-details:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(var(--theme-color), 0.3);
    background: rgba(var(--theme-color), 0.9);
}

.report-btn {
    background: #dc3545;
    color: white;
}

.report-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(220, 53, 69, 0.3);
    background: #c82333;
}

.negotiate-btn {
    background: rgb(var(--content-color));
    color: white;
}

.negotiate-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(var(--content-color), 0.3);
    background: rgba(var(--content-color), 0.8);
}

/* Message de sécurité */
.security-alert {
    background: rgba(var(--secondary-color), 0.1);
    border: 1px solid rgba(var(--secondary-color), 0.3);
    color: rgb(var(--theme-color));
    padding: 14px;
    border-radius: 12px;
    font-size: 12px;
    text-align: center;
    margin: 20px 15px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    box-shadow: 0 2px 8px rgba(var(--secondary-color), 0.2);
    animation: alertPulse 2s infinite;
}

@keyframes alertPulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.9; }
}

/* Zone de saisie */
.input-container {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: white;
    border-top: 1px solid #e9ecef;
    padding: 15px;
    z-index: 1000;
    display: flex;
    flex-direction: column;
    gap: 12px;
    box-shadow: 0 -4px 20px rgba(var(--theme-color), 0.1);
    backdrop-filter: blur(10px);
}

.quick-actions {
    display: flex;
    gap: 8px;
    overflow-x: auto;
    padding-bottom: 4px;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
}

.quick-actions::-webkit-scrollbar {
    display: none;
}

.quick-action-btn {
    background: rgba(var(--theme-color), 0.1);
    border: 1px solid rgba(var(--theme-color), 0.2);
    padding: 8px 16px;
    border-radius: 20px;
    font-size: 13px;
    color: rgb(var(--theme-color));
    cursor: pointer;
    transition: all 0.3s;
    white-space: nowrap;
    flex-shrink: 0;
    display: flex;
    align-items: center;
    gap: 6px;
}

.quick-action-btn:hover {
    background: rgba(var(--theme-color), 0.2);
    border-color: rgb(var(--theme-color));
    transform: translateY(-2px);
}

.input-wrapper {
    display: flex;
    align-items: center;
    gap: 10px;
}

.attachment-btn {
    background: rgba(var(--theme-color), 0.1);
    border: none;
    font-size: 20px;
    color: rgb(var(--theme-color));
    cursor: pointer;
    padding: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    transition: all 0.3s;
    width: 50px;
    height: 50px;
}

.attachment-btn:hover {
    background: rgba(var(--theme-color), 0.2);
    color: rgb(var(--theme-color));
    transform: rotate(15deg);
}

.message-input {
    flex: 1;
    padding: 14px 20px;
    border: 2px solid rgba(var(--theme-color), 0.2);
    border-radius: 25px;
    font-size: 14px;
    font-family: inherit;
    background: rgba(var(--theme-color), 0.05);
    transition: all 0.3s;
    min-height: 50px;
    max-height: 120px;
    resize: none;
}

.message-input:focus {
    outline: none;
    border-color: rgb(var(--theme-color));
    background: white;
    box-shadow: 0 0 0 4px rgba(var(--theme-color), 0.1);
}

.send-btn {
    background: rgb(var(--theme-color));
    border: none;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    cursor: pointer;
    transition: all 0.3s;
    flex-shrink: 0;
    box-shadow: 0 4px 12px rgba(var(--theme-color), 0.3);
}

.send-btn:hover {
    transform: translateY(-2px) scale(1.05);
    box-shadow: 0 6px 16px rgba(var(--theme-color), 0.4);
    background: rgba(var(--theme-color), 0.9);
}

.send-btn:active {
    transform: translateY(0) scale(0.98);
}

.send-btn:disabled {
    background: rgb(var(--content-color));
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
}

/* Modals */
.modal-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(var(--theme-color), 0.5);
    z-index: 2000;
    align-items: center;
    justify-content: center;
    padding: 20px;
    backdrop-filter: blur(5px);
}

.modal-overlay.active {
    display: flex;
}

.modal-container {
    background: white;
    border-radius: 16px;
    width: 100%;
    max-width: 400px;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: 0 10px 40px rgba(var(--theme-color), 0.2);
    animation: modal-slide-up 0.3s ease-out;
}

@keyframes modal-slide-up {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.modal-header {
    padding: 20px;
    border-bottom: 1px solid #e9ecef;
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: white;
    color: rgb(var(--title-color));
    border-radius: 16px 16px 0 0;
}

.modal-title {
    font-size: 18px;
    font-weight: 600;
    margin: 0;
    display: flex;
    align-items: center;
    gap: 10px;
    color: rgb(var(--title-color));
}

.modal-close {
    background: none;
    border: none;
    font-size: 24px;
    color: rgb(var(--content-color));
    cursor: pointer;
    padding: 0;
    width: 30px;
    height: 30px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    transition: all 0.3s;
}

.modal-close:hover {
    background: rgba(var(--theme-color), 0.1);
    color: rgb(var(--title-color));
}

.modal-body {
    padding: 20px;
}

.modal-message {
    color: rgb(var(--content-color));
    line-height: 1.5;
    margin-bottom: 20px;
    font-size: 14px;
}

.modal-footer {
    padding: 20px;
    border-top: 1px solid #e9ecef;
    display: flex;
    gap: 10px;
    justify-content: flex-end;
    background: white;
    border-radius: 0 0 16px 16px;
}

.modal-btn {
    padding: 10px 20px;
    border-radius: 8px;
    border: none;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s;
    min-width: 100px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.modal-btn.cancel {
    background: rgb(var(--content-color));
    color: white;
}

.modal-btn.cancel:hover {
    background: rgba(var(--content-color), 0.8);
    transform: translateY(-2px);
}

.modal-btn.confirm {
    background: rgb(var(--theme-color));
    color: white;
}

.modal-btn.confirm:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(var(--theme-color), 0.3);
    background: rgba(var(--theme-color), 0.9);
}

.modal-btn.success {
    background: rgb(var(--theme-color));
    color: white;
}

.modal-btn.success:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(var(--theme-color), 0.3);
    background: rgba(var(--theme-color), 0.9);
}

.modal-btn.error {
    background: #dc3545;
    color: white;
}

.modal-btn.error:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(220, 53, 69, 0.3);
    background: #c82333;
}

/* Modal d'offre */
.offer-form {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.form-label {
    font-size: 14px;
    font-weight: 500;
    color: rgb(var(--title-color));
    display: flex;
    align-items: center;
    gap: 8px;
}

.price-input-container {
    position: relative;
}

.price-input {
    width: 100%;
    padding: 20px;
    border: 2px solid rgba(var(--theme-color), 0.2);
    border-radius: 12px;
    font-size: 28px;
    text-align: center;
    font-weight: 700;
    transition: all 0.3s;
    font-family: inherit;
    background: rgba(var(--theme-color), 0.05);
}

.price-input:focus {
    outline: none;
    border-color: rgb(var(--theme-color));
    background: white;
    box-shadow: 0 0 0 4px rgba(var(--theme-color), 0.1);
}

.price-currency {
    position: absolute;
    right: 20px;
    top: 50%;
    transform: translateY(-50%);
    font-size: 16px;
    color: rgb(var(--content-color));
    font-weight: 600;
}

.price-info {
    display: flex;
    justify-content: space-between;
    font-size: 13px;
    color: rgb(var(--content-color));
    margin-top: 8px;
}

.offer-message {
    min-height: 100px;
    resize: vertical;
    padding: 16px;
    border: 2px solid rgba(var(--theme-color), 0.2);
    border-radius: 12px;
    font-size: 14px;
    font-family: inherit;
    transition: all 0.3s;
}

.offer-message:focus {
    outline: none;
    border-color: rgb(var(--theme-color));
    box-shadow: 0 0 0 4px rgba(var(--theme-color), 0.1);
}

.modal-section {
    background: rgba(var(--theme-color), 0.05);
    border-radius: 12px;
    padding: 20px;
    margin-bottom: 20px;
    border: 1px solid rgba(var(--theme-color), 0.1);
}

.section-title {
    font-size: 13px;
    font-weight: 600;
    color: rgb(var(--content-color));
    margin-bottom: 12px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.transaction-info {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
}

.info-item {
    display: flex;
    flex-direction: column;
}

.info-label {
    font-size: 12px;
    color: rgb(var(--content-color));
    margin-bottom: 4px;
}

.info-value {
    font-size: 14px;
    font-weight: 600;
    color: rgb(var(--title-color));
}

/* Options de transaction */
.transaction-options {
    display: grid;
    gap: 12px;
}

.action-btn {
    background: white;
    border: 2px solid rgba(var(--theme-color), 0.2);
    padding: 18px;
    border-radius: 12px;
    font-size: 15px;
    font-weight: 600;
    color: rgb(var(--title-color));
    cursor: pointer;
    transition: all 0.3s;
    display: flex;
    align-items: center;
    gap: 12px;
    text-align: left;
}

.action-btn:hover {
    border-color: rgb(var(--theme-color));
    background: rgba(var(--theme-color), 0.05);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(var(--theme-color), 0.08);
}

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

.action-btn i {
    font-size: 20px;
    color: rgb(var(--theme-color));
}

/* Options de négociation */
.negotiation-options {
    display: grid;
    gap: 12px;
}

.negotiation-option {
    background: white;
    border: 2px solid rgba(var(--theme-color), 0.2);
    padding: 16px;
    border-radius: 12px;
    cursor: pointer;
    transition: all 0.3s;
}

.negotiation-option:hover {
    border-color: rgb(var(--theme-color));
    background: rgba(var(--theme-color), 0.05);
    transform: translateY(-2px);
}

.negotiation-title {
    font-size: 15px;
    font-weight: 600;
    color: rgb(var(--title-color));
    margin-bottom: 4px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.negotiation-description {
    font-size: 13px;
    color: rgb(var(--content-color));
}

/* Signalement */
.report-options {
    display: grid;
    gap: 12px;
}

.report-option {
    background: white;
    border: 2px solid rgba(var(--theme-color), 0.2);
    padding: 16px;
    border-radius: 12px;
    cursor: pointer;
    transition: all 0.3s;
}

.report-option:hover {
    border-color: #dc3545;
    background: #fff5f5;
}

.report-option.selected {
    border-color: #dc3545;
    background: #fff5f5;
}

.report-title {
    font-size: 15px;
    font-weight: 600;
    color: #dc3545;
    margin-bottom: 4px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.report-description {
    font-size: 13px;
    color: rgb(var(--content-color));
}

.report-textarea {
    width: 100%;
    min-height: 120px;
    padding: 16px;
    border: 2px solid rgba(var(--theme-color), 0.2);
    border-radius: 12px;
    font-size: 14px;
    font-family: inherit;
    resize: vertical;
    transition: all 0.3s;
}

.report-textarea:focus {
    outline: none;
    border-color: #dc3545;
    box-shadow: 0 0 0 4px rgba(220, 53, 69, 0.1);
}

/* Bouton d'achat direct */
.direct-purchase-btn {
    background: rgb(var(--theme-color));
    color: white;
    border: none;
    padding: 12px 24px;
    border-radius: 25px;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
    display: flex;
    align-items: center;
    gap: 8px;
    margin-left: 10px;
    box-shadow: 0 4px 12px rgba(var(--theme-color), 0.3);
}

.direct-purchase-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(var(--theme-color), 0.4);
    background: rgba(var(--theme-color), 0.9);
}

.direct-purchase-btn:disabled {
    background: rgb(var(--content-color));
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
}

/* Options de transaction améliorées */
.transaction-option {
    background: white;
    border: 2px solid rgba(var(--theme-color), 0.2);
    padding: 18px;
    border-radius: 12px;
    font-size: 15px;
    font-weight: 600;
    color: rgb(var(--title-color));
    cursor: pointer;
    transition: all 0.3s;
    display: flex;
    align-items: center;
    gap: 12px;
    text-align: left;
    margin-bottom: 10px;
    width: 100%;
}

.transaction-option:hover {
    border-color: rgb(var(--theme-color));
    background: rgba(var(--theme-color), 0.05);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(var(--theme-color), 0.08);
}

.transaction-option.primary {
    border-color: rgb(var(--theme-color));
    background: rgba(var(--theme-color), 0.05);
}

.transaction-option.success {
    border-color: rgb(var(--theme-color));
    background: rgba(var(--theme-color), 0.05);
}

.transaction-option.warning {
    border-color: rgb(var(--secondary-color));
    background: rgba(var(--secondary-color), 0.05);
}

/* Badge de statut amélioré */
.status-badge {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    padding: 6px 12px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.3px;
}

.status-pending { background: rgba(var(--secondary-color), 0.15); color: rgb(var(--secondary-color)); border: 1px solid rgba(var(--secondary-color), 0.3); }
.status-accepted { background: rgba(var(--theme-color), 0.15); color: rgb(var(--theme-color)); border: 1px solid rgba(var(--theme-color), 0.3); }
.status-rejected { background: rgba(220, 53, 69, 0.15); color: #dc3545; border: 1px solid rgba(220, 53, 69, 0.3); }
.status-negotiating { background: rgba(var(--secondary-color), 0.15); color: rgb(var(--secondary-color)); border: 1px solid rgba(var(--secondary-color), 0.3); }
.status-completed { background: rgba(var(--theme-color), 0.15); color: rgb(var(--theme-color)); border: 1px solid rgba(var(--theme-color), 0.3); }
.status-terms-agreed { background: rgba(var(--secondary-color), 0.15); color: rgb(var(--secondary-color)); border: 1px solid rgba(var(--secondary-color), 0.3); }
.status-payment-pending { background: rgba(var(--secondary-color), 0.15); color: rgb(var(--secondary-color)); border: 1px solid rgba(var(--secondary-color), 0.3); }

/* PROGRESSION DES ÉTAPES */
.transaction-progress {
    background: rgba(var(--theme-color), 0.05);
    border-radius: 12px;
    padding: 16px;
    margin: 15px 0;
    border: 1px solid rgba(var(--theme-color), 0.1);
}

.progress-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 12px;
}

.progress-header span {
    font-weight: 600;
    color: rgb(var(--title-color));
}

.progress-header span:last-child {
    color: rgb(var(--theme-color));
    font-size: 18px;
}

.progress-bar {
    height: 8px;
    background: rgba(var(--theme-color), 0.1);
    border-radius: 4px;
    margin-bottom: 20px;
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, rgb(var(--theme-color)) 0%, rgb(var(--secondary-color)) 100%);
    border-radius: 4px;
    transition: width 0.5s ease;
}

.progress-steps {
    display: flex;
    justify-content: space-between;
    position: relative;
}

.progress-step {
    position: relative;
    text-align: center;
    flex: 1;
    z-index: 1;
}

.progress-step::before {
    content: '';
    position: absolute;
    top: 14px;
    left: -50%;
    width: 100%;
    height: 2px;
    background: rgba(var(--theme-color), 0.1);
    z-index: -1;
}

.progress-step:first-child::before {
    display: none;
}

.progress-step.completed::before {
    background: rgb(var(--theme-color));
}

.step-dot {
    width: 30px;
    height: 30px;
    border-radius: 50%;
    background: rgba(var(--theme-color), 0.1);
    border: 2px solid white;
    margin: 0 auto 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 12px;
    font-weight: 600;
    color: rgb(var(--content-color));
    box-shadow: 0 2px 4px rgba(var(--theme-color), 0.1);
    transition: all 0.3s ease;
}

.progress-step.completed .step-dot {
    background: rgb(var(--theme-color));
    color: white;
    border-color: rgb(var(--theme-color));
}

.progress-step.completed .step-dot::after {
    content: '✓';
    font-size: 14px;
}

.progress-step.current .step-dot {
    background: rgb(var(--theme-color));
    color: white;
    border-color: rgb(var(--theme-color));
    transform: scale(1.1);
}

.progress-step.current .step-dot::after {
    content: '●';
    font-size: 16px;
}

.step-label {
    font-size: 12px;
    color: rgb(var(--content-color));
    font-weight: 500;
    margin-top: 4px;
}

.progress-step.completed .step-label,
.progress-step.current .step-label {
    color: rgb(var(--title-color));
    font-weight: 600;
}

/* Timeline pour l'offre */
.offer-timeline {
    margin: 20px 0;
}

.timeline-step {
    display: flex;
    align-items: flex-start;
    margin-bottom: 20px;
    position: relative;
}

.timeline-step:not(:last-child)::after {
    content: '';
    position: absolute;
    left: 15px;
    top: 35px;
    bottom: -25px;
    width: 2px;
    background: rgba(var(--theme-color), 0.1);
}

.timeline-step.completed:not(:last-child)::after {
    background: rgb(var(--theme-color));
}

.timeline-icon {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: rgba(var(--theme-color), 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-right: 15px;
    flex-shrink: 0;
    z-index: 1;
}

.timeline-step.completed .timeline-icon {
    background: rgb(var(--theme-color));
    color: white;
}

.timeline-step.current .timeline-icon {
    background: rgb(var(--theme-color));
    color: white;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0% { box-shadow: 0 0 0 0 rgba(var(--theme-color), 0.4); }
    70% { box-shadow: 0 0 0 10px rgba(var(--theme-color), 0); }
    100% { box-shadow: 0 0 0 0 rgba(var(--theme-color), 0); }
}

.timeline-content {
    flex: 1;
}

.timeline-title {
    font-weight: 600;
    margin-bottom: 4px;
    color: rgb(var(--title-color));
}

.timeline-step.completed .timeline-title {
    color: rgb(var(--theme-color));
}

.timeline-step.current .timeline-title {
    color: rgb(var(--theme-color));
}

.timeline-date {
    font-size: 12px;
    color: rgb(var(--content-color));
    margin-bottom: 4px;
}

.timeline-description {
    font-size: 14px;
    color: rgb(var(--content-color));
}

/* Étapes de confirmation */
.confirmation-steps {
    margin: 20px 0;
}

.step {
    display: flex;
    align-items: flex-start;
    margin-bottom: 20px;
    opacity: 0.5;
    transition: opacity 0.3s ease;
}

.step.active {
    opacity: 1;
}

.step.completed {
    opacity: 1;
}

.step-number {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: rgba(var(--theme-color), 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-right: 15px;
    flex-shrink: 0;
    font-weight: 600;
    color: rgb(var(--content-color));
}

.step.active .step-number {
    background: rgb(var(--theme-color));
    color: white;
    animation: pulse 2s infinite;
}

.step.completed .step-number {
    background: rgb(var(--theme-color));
    color: white;
}

.step.completed .step-number::after {
    content: '✓';
}

.step-content {
    flex: 1;
}

.step-content h4 {
    margin: 0 0 4px 0;
    font-weight: 600;
    color: rgb(var(--title-color));
}

.step-content p {
    margin: 0;
    color: rgb(var(--content-color));
    font-size: 14px;
}

/* Messages système avec progression */
.system-message .offer-actions {
    margin-top: 12px;
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

.offer-action-btn.view-details {
    background: rgba(var(--theme-color), 0.1);
    color: rgb(var(--title-color));
}

.offer-action-btn.accept-terms,
.offer-action-btn.accept-offer {
    background: rgb(var(--theme-color));
    color: white;
}

.offer-action-btn.reject-offer {
    background: #dc3545;
    color: white;
}

.offer-action-btn.counter-offer {
    background: rgb(var(--secondary-color));
    color: white;
}

.offer-action-btn.confirm-receipt {
    background: rgb(var(--theme-color));
    color: white;
}

.offer-action-btn.confirm-delivery {
    background: rgb(var(--secondary-color));
    color: white;
}

.offer-action-btn:hover {
    opacity: 0.9;
    transform: translateY(-1px);
}

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

/* États de chargement */
.skeleton {
    background: linear-gradient(90deg, rgba(var(--theme-color), 0.1) 25%, rgba(var(--theme-color), 0.05) 50%, rgba(var(--theme-color), 0.1) 75%);
    background-size: 200% 100%;
    animation: loading 1.5s infinite;
    border-radius: 12px;
}

@keyframes loading {
    0% { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}

.skeleton-avatar {
    width: 45px;
    height: 45px;
    border-radius: 50%;
}

.skeleton-text {
    height: 12px;
    border-radius: 6px;
    margin-bottom: 4px;
}

.skeleton-text.short {
    width: 60%;
}

.skeleton-text.medium {
    width: 80%;
}

.skeleton-bubble {
    height: 60px;
    border-radius: 18px;
    margin-bottom: 10px;
}

/* Améliorations pour les modals */
.modal-overlay {
    backdrop-filter: blur(5px);
    animation: fadeIn 0.3s ease-out;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

.modal-overlay.active {
    display: flex;
}

.modal-container.closing {
    animation: modal-slide-down 0.3s ease-out forwards;
}

@keyframes modal-slide-down {
    from {
        opacity: 1;
        transform: translateY(0);
    }
    to {
        opacity: 0;
        transform: translateY(20px);
    }
}

/* Responsive */
@media (max-width: 576px) {
    .chat-header {
        padding: 12px;
    }
    
    .product-bar {
        padding: 10px 12px;
    }
    
    .product-image {
        width: 50px;
        height: 50px;
    }
    
    .input-container {
        padding: 12px;
    }
    
    .modal-container {
        max-width: 100%;
        border-radius: 16px;
    }
    
    .modal-header {
        padding: 20px;
    }
    
    .modal-body {
        padding: 20px;
    }
    
    .modal-footer {
        padding: 20px;
    }
    
    .offer-price {
        font-size: 24px;
    }
    
    .offer-action-btn {
        min-width: 100px;
        font-size: 12px;
        padding: 10px;
    }
    
    .direct-purchase-btn {
        margin-left: 5px;
        padding: 10px 16px;
        font-size: 13px;
    }
}

@media (max-width: 480px) {
    .offer-actions {
        flex-direction: column;
    }
    
    .offer-action-btn {
        width: 100%;
    }
    
    .transaction-info {
        grid-template-columns: 1fr;
    }
}

/* Indicateur de modal actif */
body.modal-open {
    overflow: hidden;
}

    /* Variables CSS avec les couleurs spécifiées */
    :root {
        --theme-color: 0, 49, 83;
        --title-color: 32, 35, 38;
        --content-color: 153, 153, 153;
        --secondary-color: 124, 185, 232;
        --success-color: 40, 167, 69;
        --warning-color: 255, 193, 7;
        --danger-color: 220, 53, 69;
        --light-color: 248, 249, 250;
        --dark-color: 33, 37, 41;
        --border-color: 220, 223, 226;
        --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
        --shadow-md: 0 2px 6px rgba(0,0,0,0.08);
        --shadow-lg: 0 4px 12px rgba(0,0,0,0.1);
        --radius-sm: 4px;
        --radius-md: 6px;
        --radius-lg: 8px;
        --white: 255, 255, 255;
        --black: 0, 0, 0;
    }

    /* Boutons d'action principaux - Style compact */
    .action-buttons-container {
        display: flex;
        gap: 8px;
        padding: 12px 16px;
        background: rgb(var(--white));
        border-top: 1px solid rgb(var(--border-color));
        position: sticky;
        bottom: 0;
        z-index: 100;
        flex-wrap: nowrap;
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
        scrollbar-width: none;
        -ms-overflow-style: none;
    }

    .action-buttons-container::-webkit-scrollbar {
        display: none;
    }

    .action-btn {
        flex: 1;
        min-width: 120px;
        max-width: 200px;
        height: 44px;
        border: none;
        border-radius: var(--radius-md);
        font-size: 14px;
        font-weight: 600;
        cursor: pointer;
        transition: all 0.2s ease;
        display: flex;
        align-items: center;
        justify-content: center;
        gap: 8px;
        padding: 0 16px;
        white-space: nowrap;
        text-decoration: none;
    }

    .offer-btn {
        background: rgba(var(--secondary-color), 0.1);
        color: rgb(var(--theme-color));
        border: 1px solid rgba(var(--secondary-color), 0.5);
    }

    .offer-btn:hover {
        background: rgba(var(--secondary-color), 0.2);
        transform: translateY(-1px);
    }

    .purchase-btn {
        background: rgb(var(--theme-color));
        color: rgb(var(--white));
        border: 1px solid rgb(var(--theme-color));
    }

    .purchase-btn:hover {
        background: rgba(var(--theme-color), 0.9);
        transform: translateY(-1px);
    }

    .offer-btn i {
        color: rgb(var(--theme-color));
    }

    .purchase-btn i {
        color: rgb(var(--white));
    }

    /* Modals avec les nouvelles couleurs */
    .modal-overlay {
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        background: rgba(var(--black), 0.5);
        display: none;
        align-items: center;
        justify-content: center;
        z-index: 1000;
        padding: 20px;
    }

    .modal-overlay.active {
        display: flex;
    }

    .modal-container {
        background: rgb(var(--white));
        border-radius: var(--radius-lg);
        border: 1px solid rgb(var(--border-color));
        box-shadow: var(--shadow-lg);
        width: 100%;
        max-width: 500px;
        max-height: 80vh;
        overflow: hidden;
        display: flex;
        flex-direction: column;
    }

    .modal-header {
        background: rgba(var(--theme-color), 0.05);
        border-bottom: 1px solid rgb(var(--border-color));
        padding: 20px;
        display: flex;
        align-items: center;
        justify-content: space-between;
    }

    .modal-title {
        color: rgb(var(--theme-color));
        font-size: 18px;
        font-weight: 600;
        margin: 0;
    }

    .modal-close {
        background: none;
        border: none;
        font-size: 24px;
        color: rgb(var(--content-color));
        cursor: pointer;
        line-height: 1;
        padding: 0;
        width: 30px;
        height: 30px;
        display: flex;
        align-items: center;
        justify-content: center;
        border-radius: var(--radius-sm);
    }

    .modal-close:hover {
        background: rgb(var(--border-color));
    }

    .modal-body {
        padding: 20px;
        flex: 1;
        overflow-y: auto;
        color: rgb(var(--title-color));
    }

    .modal-footer {
        padding: 20px;
        border-top: 1px solid rgb(var(--border-color));
        background: rgba(var(--light-color), 0.5);
        display: flex;
        justify-content: flex-end;
        gap: 10px;
    }

    .modal-btn {
        background: rgb(var(--theme-color));
        color: rgb(var(--white));
        border: none;
        border-radius: var(--radius-sm);
        padding: 10px 20px;
        font-size: 14px;
        font-weight: 600;
        cursor: pointer;
        transition: background 0.2s ease;
    }

    .modal-btn:hover {
        background: rgba(var(--theme-color), 0.9);
    }

    .modal-btn.cancel {
        background: rgba(var(--content-color), 0.1);
        color: rgb(var(--title-color));
    }

    .modal-btn.cancel:hover {
        background: rgba(var(--content-color), 0.2);
    }

    /* Boutons dans les modals */
    .offer-action-btn {
        background: rgba(var(--secondary-color), 0.1);
        color: rgb(var(--theme-color));
        border: 1px solid rgba(var(--secondary-color), 0.3);
        border-radius: var(--radius-sm);
        padding: 8px 16px;
        font-size: 14px;
        font-weight: 500;
        cursor: pointer;
        transition: all 0.2s ease;
        display: inline-flex;
        align-items: center;
        gap: 6px;
    }

    .offer-action-btn:hover {
        background: rgba(var(--secondary-color), 0.2);
        transform: translateY(-1px);
    }

    .offer-action-btn.accept-offer,
    .offer-action-btn.accept-terms {
        background: rgba(var(--success-color), 0.1);
        color: rgb(var(--success-color));
        border-color: rgba(var(--success-color), 0.3);
    }

    .offer-action-btn.reject-offer {
        background: rgba(var(--danger-color), 0.1);
        color: rgb(var(--danger-color));
        border-color: rgba(var(--danger-color), 0.3);
    }

    /* Styles pour les boutons de transaction */
    .transaction-option {
        background: rgb(var(--white));
        border: 1px solid rgb(var(--border-color));
        border-radius: var(--radius-md);
        padding: 12px;
        text-align: left;
        width: 100%;
        transition: all 0.2s ease;
        color: rgb(var(--title-color));
        margin-bottom: 8px;
        cursor: pointer;
    }

    .transaction-option:hover {
        background: rgba(var(--secondary-color), 0.1);
        border-color: rgba(var(--secondary-color), 0.5);
        transform: translateY(-1px);
    }

    .transaction-option.primary {
        background: rgb(var(--theme-color));
        color: rgb(var(--white));
        border-color: rgb(var(--theme-color));
    }

    .transaction-option.primary:hover {
        background: rgba(var(--theme-color), 0.9);
    }

    .option-title {
        font-weight: 600;
        margin-bottom: 4px;
        color: inherit;
    }

    .option-subtitle {
        font-size: 13px;
        color: rgb(var(--content-color));
    }

    /* Quick actions */
    .quick-action-btn {
        background: rgba(var(--light-color), 1);
        border: 1px solid rgb(var(--border-color));
        border-radius: 20px;
        padding: 6px 12px;
        font-size: 13px;
        color: rgb(var(--title-color));
        transition: all 0.2s ease;
        white-space: nowrap;
        cursor: pointer;
    }

    .quick-action-btn:hover {
        background: rgba(var(--secondary-color), 0.1);
        border-color: rgba(var(--secondary-color), 0.5);
    }

    /* Messages système */
    .system-message {
        background: rgba(var(--light-color), 1);
        border: 1px solid rgb(var(--border-color));
        border-radius: var(--radius-lg);
        margin: 12px auto;
        max-width: 90%;
        color: rgb(var(--title-color));
        padding: 16px;
    }

    .system-header {
        background: rgba(var(--theme-color), 0.05);
        border-bottom: 1px solid rgb(var(--border-color));
        padding: 12px 16px;
        margin: -16px -16px 16px -16px;
        border-radius: var(--radius-lg) var(--radius-lg) 0 0;
        display: flex;
        align-items: center;
        justify-content: space-between;
    }

    .system-title {
        color: rgb(var(--theme-color));
        font-size: 16px;
        margin: 0;
        display: flex;
        align-items: center;
        gap: 8px;
    }

    /* Avatar initials */
    .avatar-initials {
        width: 100%;
        height: 100%;
        background: rgb(var(--theme-color));
        display: flex;
        align-items: center;
        justify-content: center;
        color: rgb(var(--white));
        font-size: 16px;
        font-weight: 600;
        border-radius: 50%;
    }

    /* Online indicator */
    .online-indicator {
        color: rgb(var(--success-color));
        font-size: 8px;
    }

    /* Empty chat icon */
    .empty-chat-icon {
        font-size: 48px;
        color: rgb(var(--border-color));
        margin-bottom: 16px;
    }

    /* Previous offer container */
    .previous-offer-container {
        text-align: center;
        padding: 15px;
        background: rgba(var(--light-color), 1);
        border-radius: var(--radius-md);
        margin-bottom: 15px;
        border: 1px solid rgb(var(--border-color));
    }

    .previous-offer-amount {
        font-size: 18px;
        font-weight: 600;
        color: rgb(var(--danger-color));
    }

    .previous-offer-label {
        font-size: 14px;
        color: rgb(var(--content-color));
    }

    /* Context menu */
    .context-menu-item {
        padding: 8px 16px;
        cursor: pointer;
        border-bottom: 1px solid rgb(var(--border-color));
        transition: background 0.2s ease;
        color: rgb(var(--title-color));
    }

    .context-menu-item:hover {
        background: rgba(var(--light-color), 1);
    }

    .context-menu-item.delete {
        color: rgb(var(--danger-color));
    }

    /* Progress bar */
    .transaction-progress {
        margin: 16px 0;
        padding: 16px;
        background: rgb(var(--white));
        border-radius: var(--radius-md);
        border: 1px solid rgb(var(--border-color));
    }

    .progress-header {
        display: flex;
        justify-content: space-between;
        margin-bottom: 8px;
        font-size: 14px;
        color: rgb(var(--title-color));
    }

    .progress-bar {
        height: 6px;
        background: rgb(var(--border-color));
        border-radius: 3px;
        overflow: hidden;
        margin-bottom: 16px;
    }

    .progress-fill {
        height: 100%;
        background: rgb(var(--theme-color));
        border-radius: 3px;
        transition: width 0.3s ease;
    }

    .progress-steps {
        display: flex;
        justify-content: space-between;
        gap: 8px;
    }

    .progress-step {
        flex: 1;
        text-align: center;
        position: relative;
    }

    .step-dot {
        width: 24px;
        height: 24px;
        background: rgb(var(--border-color));
        border-radius: 50%;
        margin: 0 auto 8px;
        display: flex;
        align-items: center;
        justify-content: center;
        font-size: 12px;
        color: rgb(var(--content-color));
    }

    .progress-step.completed .step-dot {
        background: rgb(var(--theme-color));
        color: rgb(var(--white));
    }

    .progress-step.current .step-dot {
        background: rgb(var(--theme-color));
        color: rgb(var(--white));
        box-shadow: 0 0 0 3px rgba(var(--theme-color), 0.2);
    }

    .step-label {
        font-size: 12px;
        color: rgb(var(--content-color));
    }

    .progress-step.completed .step-label,
    .progress-step.current .step-label {
        color: rgb(var(--title-color));
        font-weight: 500;
    }

    /* Timeline */
    .offer-timeline {
        margin: 16px 0;
    }

    .timeline-step {
        display: flex;
        gap: 12px;
        padding: 12px 0;
        border-left: 2px solid rgb(var(--border-color));
        margin-left: 12px;
        position: relative;
    }

    .timeline-step:last-child {
        border-left: 2px solid transparent;
    }

    .timeline-step.completed {
        border-left-color: rgb(var(--theme-color));
    }

    .timeline-icon {
        width: 24px;
        height: 24px;
        background: rgb(var(--border-color));
        border-radius: 50%;
        display: flex;
        align-items: center;
        justify-content: center;
        margin-left: -13px;
        flex-shrink: 0;
        color: rgb(var(--content-color));
    }

    .timeline-step.completed .timeline-icon {
        background: rgb(var(--theme-color));
        color: rgb(var(--white));
    }

    .timeline-step.current .timeline-icon {
        background: rgb(var(--theme-color));
        color: rgb(var(--white));
        box-shadow: 0 0 0 3px rgba(var(--theme-color), 0.2);
    }

    .timeline-content {
        flex: 1;
    }

    .timeline-title {
        font-weight: 600;
        margin-bottom: 4px;
        color: rgb(var(--title-color));
    }

    .timeline-date {
        font-size: 12px;
        color: rgb(var(--content-color));
        margin-bottom: 4px;
    }

    .timeline-description {
        font-size: 13px;
        color: rgb(var(--content-color));
    }

    /* Offer summary */
    .offer-summary {
        background: rgba(var(--light-color), 1);
        border-radius: var(--radius-md);
        padding: 16px;
        border: 1px solid rgb(var(--border-color));
    }

    .offer-summary h4 {
        margin: 0 0 16px 0;
        color: rgb(var(--title-color));
    }

    .summary-item {
        display: flex;
        justify-content: space-between;
        margin-bottom: 8px;
        font-size: 14px;
    }

    .summary-label {
        color: rgb(var(--content-color));
    }

    .summary-value {
        font-weight: 500;
        color: rgb(var(--title-color));
    }

    /* Decision process steps */
    .decision-steps {
        margin: 16px 0;
    }

    .decision-step {
        display: flex;
        gap: 12px;
        padding: 12px;
        border-radius: var(--radius-md);
        background: rgb(var(--white));
        border: 1px solid rgb(var(--border-color));
        margin-bottom: 8px;
        transition: all 0.3s ease;
    }

    .decision-step.completed {
        background: rgba(var(--success-color), 0.05);
        border-color: rgba(var(--success-color), 0.3);
    }

    .decision-step.active {
        background: rgba(var(--theme-color), 0.05);
        border-color: rgba(var(--theme-color), 0.3);
        box-shadow: var(--shadow-sm);
    }

    .step-icon {
        width: 24px;
        height: 24px;
        flex-shrink: 0;
        display: flex;
        align-items: center;
        justify-content: center;
    }

    .decision-step.completed .step-icon {
        color: rgb(var(--success-color));
    }

    .decision-step.active .step-icon {
        color: rgb(var(--theme-color));
    }

    .step-text {
        flex: 1;
        font-size: 14px;
        color: rgb(var(--title-color));
    }

    /* Status badges */
    .system-status {
        font-size: 12px;
        padding: 4px 8px;
        border-radius: 12px;
        font-weight: 600;
        text-transform: uppercase;
        letter-spacing: 0.5px;
    }

    .status-pending {
        background: rgba(var(--warning-color), 0.1);
        color: rgb(var(--warning-color));
    }

    .status-accepted {
        background: rgba(var(--success-color), 0.1);
        color: rgb(var(--success-color));
    }

    .status-rejected {
        background: rgba(var(--danger-color), 0.1);
        color: rgb(var(--danger-color));
    }

    .status-negotiating {
        background: rgba(var(--secondary-color), 0.1);
        color: rgb(var(--theme-color));
    }

    /* Discount badge */
    .discount-badge {
        background: rgb(var(--success-color));
        color: rgb(var(--white));
        padding: 2px 6px;
        border-radius: 10px;
        font-size: 11px;
        margin-left: 8px;
        font-weight: 600;
    }

    /* Original price */
    .original-price {
        font-size: 13px;
        color: rgb(var(--content-color));
        text-decoration: line-through;
        margin-top: 4px;
    }

    /* Offer price */
    .offer-price {
        font-size: 18px;
        font-weight: 700;
        color: rgb(var(--theme-color));
        margin: 8px 0;
    }

    /* Offer actions container */
    .offer-actions {
        display: flex;
        gap: 8px;
        margin-top: 16px;
        flex-wrap: wrap;
    }

    /* Text button */
    .text-btn {
        background: none;
        border: none;
        color: rgb(var(--theme-color));
        cursor: pointer;
        padding: 0;
        font-size: inherit;
        text-decoration: underline;
    }

    .text-btn:hover {
        color: rgba(var(--theme-color), 0.8);
    }

    /* Status button in action container */
    .status-btn {
        background: rgba(var(--warning-color), 0.1);
        color: rgb(var(--warning-color));
        border: 1px solid rgba(var(--warning-color), 0.3);
        border-radius: var(--radius-md);
        padding: 8px 16px;
        font-size: 14px;
        font-weight: 500;
        cursor: pointer;
        display: flex;
        align-items: center;
        gap: 6px;
    }

    .status-btn:hover {
        background: rgba(var(--warning-color), 0.2);
        transform: translateY(-1px);
    }

    /* Responsive adjustments */
    @media (max-width: 480px) {
        .action-btn {
            min-width: 100px;
            font-size: 13px;
            padding: 0 12px;
            height: 40px;
        }
        
        .action-buttons-container {
            padding: 10px 12px;
            gap: 6px;
        }
        
        .modal-container {
            margin: 10px;
            width: calc(100% - 20px);
        }

        .offer-actions {
            flex-direction: column;
        }

        .offer-action-btn {
            width: 100%;
            justify-content: center;
        }
    }

    @media (max-width: 360px) {
        .action-btn {
            min-width: 90px;
            font-size: 12px;
            padding: 0 10px;
            height: 36px;
        }
        
        .offer-btn, .purchase-btn {
            font-size: 12px;
        }

        .modal-title {
            font-size: 16px;
        }
    }

    /* Pour les très grands écrans */
    @media (min-width: 1200px) {
        .action-buttons-container {
            justify-content: center;
            padding: 16px;
        }
        
        .action-btn {
            max-width: 180px;
        }
    }

    /* Body modal open */
    body.modal-open {
        overflow: hidden;
    }