body {
    background: #f3f6fb;
}

.ai-page {
    min-height: calc(100vh - 140px);
}

.ai-hero {
    padding: 120px 0 36px;
    background: linear-gradient(135deg, #0f4c81, #1b6fb1);
    color: #fff;
}

.ai-hero h1 {
    margin: 0 0 10px;
    font-size: 38px;
}

.ai-hero p {
    margin: 0;
    opacity: 0.92;
    font-size: 16px;
}

.ai-chat-section {
    padding: 26px 0 44px;
}

.ai-chat-card {
    display: grid;
    grid-template-columns: 1fr;
    gap: 16px;
    background: #fff;
    border: 1px solid #e7edf7;
    border-radius: 14px;
    padding: 16px;
    box-shadow: 0 10px 24px rgba(12, 37, 74, 0.08);
}

.ai-chat-sidebar {
    border: 1px solid #e9eef8;
    border-radius: 12px;
    padding: 14px;
    background: #f9fbff;
}

.ai-chat-sidebar h3 {
    margin: 0 0 10px;
    font-size: 16px;
    color: #20324f;
}

.ai-chat-sidebar ul {
    margin: 0;
    padding-left: 18px;
    color: #5d6a82;
    line-height: 1.7;
    font-size: 14px;
}

.ai-model-row {
    margin-top: 14px;
    display: grid;
    gap: 6px;
}

.ai-model-row label {
    font-size: 13px;
    color: #4f5d77;
}

.ai-model-row select {
    border: 1px solid #d8e0ef;
    border-radius: 8px;
    padding: 9px 10px;
    font-size: 14px;
    background: #fff;
}

.ai-chat-main {
    display: grid;
    grid-template-rows: 1fr auto;
    min-height: 560px;
}

.ai-chat-messages {
    border: 1px solid #e8edf7;
    border-radius: 12px;
    background: #f9fbff;
    padding: 14px;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.chat-msg {
    display: flex;
    align-items: flex-start;
}

.chat-msg.user {
    justify-content: flex-end;
}

.chat-msg.ai {
    justify-content: flex-start;
}

.chat-bubble {
    display: inline-block;
    width: fit-content;
    max-width: 84%;
    border-radius: 12px;
    padding: 8px 12px;
    line-height: 1.5;
    font-size: 14px;
    white-space: pre-wrap;
    overflow-wrap: anywhere;
}

.chat-msg.user .chat-bubble {
    background: linear-gradient(135deg, #2678d9, #1f66bb);
    color: #fff;
}

.chat-msg.ai .chat-bubble {
    background: #fff;
    color: #2e3b53;
    border: 1px solid #e3e9f4;
}

.ai-chat-input-wrap {
    margin-top: 12px;
    display: grid;
    gap: 10px;
}

#aiChatInput {
    border: 1px solid #d9e2f1;
    border-radius: 12px;
    padding: 12px 14px;
    font-size: 14px;
    resize: vertical;
    min-height: 86px;
    font-family: inherit;
}

#aiChatInput:focus {
    outline: none;
    border-color: #2f7dd6;
    box-shadow: 0 0 0 3px rgba(47, 125, 214, 0.14);
}

.ai-chat-actions {
    display: flex;
    justify-content: flex-end;
    gap: 10px;
}

.btn-outline,
.btn-primary {
    border-radius: 10px;
    border: 1px solid transparent;
    padding: 10px 14px;
    font-size: 14px;
    cursor: pointer;
}

.btn-outline {
    border-color: #d5deee;
    background: #fff;
    color: #44516a;
}

.btn-primary {
    background: linear-gradient(135deg, #2678d9, #1f66bb);
    color: #fff;
}

.btn-primary:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

@media (max-width: 900px) {
    .ai-chat-card {
        grid-template-columns: 1fr;
    }

    .ai-chat-main {
        min-height: 520px;
    }

    .ai-hero {
        padding-top: 104px;
    }
}