/* ===== Support Chat Layout ===== */
.chat-layout {
    display: grid;
    grid-template-columns: 1fr 280px;
    gap: 1.5rem;
    max-width: 960px;
    margin: 0 auto;
}

.chat-card {
    display: flex;
    flex-direction: column;
    height: 640px;
    overflow: hidden;
    padding: 0;
}

/* ===== Messages Area ===== */
.chat-messages {
    flex: 1;
    overflow-y: auto;
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.chat-messages::-webkit-scrollbar {
    width: 6px;
}

.chat-messages::-webkit-scrollbar-track {
    background: transparent;
}

.chat-messages::-webkit-scrollbar-thumb {
    background: var(--border-color, #e2e8f0);
    border-radius: 3px;
}

/* ===== Welcome State ===== */
.chat-welcome {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    flex: 1;
    padding: 2rem 1rem;
}

.chat-welcome-icon {
    color: var(--accent, #2563EB);
    margin-bottom: 1rem;
    opacity: 0.7;
}

.chat-welcome h3 {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

.chat-welcome p {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-bottom: 1.5rem;
    max-width: 400px;
}

.chat-suggestions {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    justify-content: center;
    max-width: 480px;
}

.chat-suggestion {
    background: var(--bg-primary, #fff);
    border: 1px solid var(--border-color, #e2e8f0);
    border-radius: var(--radius-md, 8px);
    padding: 0.5rem 0.85rem;
    font-size: 0.82rem;
    color: var(--text-primary);
    cursor: pointer;
    transition: border-color 0.15s, background 0.15s;
    text-align: left;
}

.chat-suggestion:hover {
    border-color: var(--accent, #2563EB);
    background: var(--bg-secondary, #f8fafc);
}

/* ===== Message Bubbles ===== */
.chat-message {
    display: flex;
    gap: 0.65rem;
    align-items: flex-start;
}

.chat-message-avatar {
    flex-shrink: 0;
    width: 32px;
    height: 32px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.chat-message-user .chat-message-avatar {
    background: var(--border-color, #e2e8f0);
    color: var(--text-secondary);
}

.chat-message-assistant .chat-message-avatar {
    background: #2563EB;
    color: #fff;
}

.chat-message-content {
    flex: 1;
    font-size: 0.9rem;
    line-height: 1.55;
    color: var(--text-primary);
    min-width: 0;
    word-break: break-word;
}

.chat-message-user .chat-message-content {
    background: var(--bg-secondary, #f1f5f9);
    border-radius: var(--radius-md, 8px);
    padding: 0.65rem 0.85rem;
}

.chat-message-content code {
    background: var(--bg-secondary, #f1f5f9);
    padding: 0.15rem 0.35rem;
    border-radius: 4px;
    font-size: 0.82rem;
    font-family: 'Consolas', 'Monaco', monospace;
}

.chat-message-content a {
    color: var(--accent, #2563EB);
    text-decoration: underline;
}

/* ===== Streaming Cursor ===== */
.chat-cursor {
    display: inline-block;
    width: 2px;
    height: 1em;
    background: var(--accent, #2563EB);
    margin-left: 2px;
    vertical-align: text-bottom;
    animation: blink 0.8s infinite;
}

@keyframes blink {
    0%, 50% { opacity: 1; }
    51%, 100% { opacity: 0; }
}

/* ===== Input Area ===== */
.chat-input-area {
    border-top: 1px solid var(--border-color, #e2e8f0);
    padding: 0.85rem 1.25rem;
}

.chat-input-row {
    display: flex;
    gap: 0.5rem;
    align-items: flex-end;
}

.chat-input-row textarea {
    flex: 1;
    border: 1px solid var(--border-color, #e2e8f0);
    border-radius: var(--radius-md, 8px);
    padding: 0.6rem 0.75rem;
    font-size: 0.9rem;
    font-family: inherit;
    resize: none;
    min-height: 40px;
    max-height: 120px;
    background: var(--bg-primary, #fff);
    color: var(--text-primary);
    outline: none;
    transition: border-color 0.15s;
}

.chat-input-row textarea:focus {
    border-color: var(--accent, #2563EB);
}

.chat-input-row textarea:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.chat-send-btn {
    flex-shrink: 0;
    width: 40px;
    height: 40px;
    padding: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-md, 8px);
}

.chat-send-btn:disabled {
    opacity: 0.4;
    cursor: not-allowed;
}

.chat-input-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 0.4rem;
    font-size: 0.72rem;
    color: var(--text-secondary);
}

.chat-char-count {
    opacity: 0.7;
}

.chat-disclaimer a {
    color: var(--accent, #2563EB);
}

/* ===== Sidebar ===== */
.chat-sidebar .checkout-card {
    position: sticky;
    top: 5rem;
}

.chat-sidebar-links {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-direction: column;
    gap: 0.65rem;
}

.chat-sidebar-links a {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--text-primary);
    text-decoration: none;
    font-size: 0.9rem;
    padding: 0.4rem 0;
    transition: color 0.15s;
}

.chat-sidebar-links a:hover {
    color: var(--accent, #2563EB);
}

.chat-sidebar-links svg {
    flex-shrink: 0;
    opacity: 0.6;
}

/* ===== Responsive ===== */
@media (max-width: 768px) {
    .chat-layout {
        grid-template-columns: 1fr;
    }

    .chat-card {
        height: 520px;
    }

    .chat-sidebar {
        order: -1;
    }

    .chat-sidebar .checkout-card {
        position: static;
    }
}

@media (max-width: 480px) {
    .chat-card {
        height: 460px;
    }

    .chat-messages {
        padding: 1rem;
    }

    .chat-input-area {
        padding: 0.65rem 0.85rem;
    }

    .chat-suggestions {
        flex-direction: column;
    }

    .chat-suggestion {
        width: 100%;
    }
}