:root {
    color-scheme: dark;
    font-family: "Segoe UI", Arial, sans-serif;
    background: #101827;
    color: #f8fafc;
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    min-height: 100vh;
    background: radial-gradient(
        circle at top,
        #233c61 0%,
        #101827 65%
    );
}

header {
    max-width: 960px;
    margin: 0 auto;
    padding: 28px 24px;
}

header h1 {
    margin: 0;
    color: #67e8f9;
    font-size: 30px;
}

header p {
    margin: 6px 0 0;
    color: #9caac5;
}

main {
    width: 100%;
    max-width: 960px;
    margin: 0 auto;
    padding: 32px 24px;
}

#chat {
    min-height: 480px;
    padding: 36px;
    background: #1c2940;
    border: 1px solid #34445d;
    border-radius: 24px;
    box-shadow: 0 18px 48px #00000035;
}

#chat h2 {
    font-size: 28px;
    margin: 0 0 12px;
}

#chat p {
    color: #a9b6cf;
    line-height: 1.6;
}

#messages {
    min-height: 160px;
    margin: 24px 0;
}

#chat-form {
    display: flex;
    gap: 12px;
    padding: 8px;
    background: #121d30;
    border: 1px solid #35435b;
    border-radius: 16px;
}

#message-input {
    flex: 1;
    min-width: 0;
    padding: 14px;
    border: none;
    outline: none;
    background: transparent;
    color: white;
    font-size: 15px;
}

#chat-form button {
    padding: 12px 24px;
    border: none;
    border-radius: 12px;
    background: #67e8f9;
    color: #102033;
    font-weight: 700;
}

#chat-form button:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

@media (max-width: 600px) {
    main {
        padding: 12px;
    }

    #chat {
        padding: 22px;
        min-height: 400px;
    }

    #chat h2 {
        font-size: 23px;
    }

    #chat-form button {
        padding: 12px 16px;
    }
}

/* HANAI_AUTH_UI_V1 */

#auth-panel {
    width: 100%;
    max-width: 520px;
    margin: 12px auto 48px;
    padding: 36px;
    background: #1c2940;
    border: 1px solid #34445d;
    border-radius: 24px;
    box-shadow: 0 18px 48px #00000035;
}

#auth-panel h2 {
    margin: 0 0 12px;
    font-size: 28px;
    color: #f8fafc;
}

#auth-panel p {
    color: #a9b6cf;
    line-height: 1.6;
}

#login-form,
#register-form {
    display: flex;
    flex-direction: column;
    gap: 12px;
    margin-top: 24px;
}

#auth-panel label {
    font-size: 14px;
    font-weight: 600;
    color: #cbd5e1;
}

#auth-panel input {
    width: 100%;
    padding: 14px 16px;
    background: #121d30;
    border: 1px solid #42536b;
    border-radius: 12px;
    color: #f8fafc;
    font: inherit;
}

#auth-panel input:focus {
    outline: 2px solid #67e8f9;
    outline-offset: 2px;
}

#auth-panel button {
    width: 100%;
    margin-top: 12px;
    padding: 14px;
    background: #67e8f9;
    color: #102033;
    border: none;
    border-radius: 12px;
    font: inherit;
    font-weight: 700;
    cursor: pointer;
}

#auth-panel button:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

#register-section {
    margin-top: 24px;
    padding-top: 20px;
    border-top: 1px solid #34445d;
}

#register-section summary {
    color: #67e8f9;
    text-align: center;
    cursor: pointer;
    font-weight: 600;
}

#auth-message {
    margin-top: 16px;
    text-align: center;
}

#auth-message:empty {
    display: none;
}

[hidden] {
    display: none !important;
}

@media (max-width: 600px) {
    #auth-panel {
        padding: 24px;
        margin-top: 8px;
    }

    #auth-panel h2 {
        font-size: 24px;
    }
}

/* HanAI 2.0 - responsive chat history interface */
body.h2-authenticated { background: #0b1120; }
body.h2-authenticated > header { display: none; }
body.h2-authenticated > main { width: 100%; max-width: none; margin: 0; padding: 0; }
body.h2-authenticated #chat {
    height: 100dvh; min-height: 100dvh; padding: 0; margin: 0;
    border: 0; border-radius: 0; box-shadow: none; background: #0b1120;
}
.h2-shell { display: grid; grid-template-columns: 280px minmax(0, 1fr); height: 100dvh; min-height: 100dvh; }
.h2-sidebar {
    min-height: 0; display: flex; flex-direction: column;
    padding: 22px 14px 14px; border-right: 1px solid #25344f;
    background: #111c2f;
}
.h2-brand { display: flex; align-items: center; gap: 12px; padding: 0 12px 22px; }
.h2-logo { display: grid; place-items: center; width: 39px; height: 39px; border-radius: 14px; background: #163f4e; color: #67e8f9; font-size: 26px; }
.h2-brand strong { display: block; font-size: 19px; }
.h2-brand small { display: block; margin-top: 2px; color: #9cb0cd; font-size: 12px; }
#chat .h2-new { width: 100%; border: 1px solid #376073; border-radius: 13px; padding: 12px 14px; background: #17394b; color: #e0faff; cursor: pointer; text-align: left; font: inherit; font-weight: 650; }
#chat button:hover:not(:disabled) { filter: brightness(1.14); }
#chat button:disabled { opacity: .55; cursor: not-allowed; }
.h2-sidebar-label { color: #879bb9; font-size: 11px; font-weight: 750; letter-spacing: .08em; padding: 26px 12px 10px; }
.h2-history { overflow-y: auto; flex: 1; min-height: 0; display: flex; flex-direction: column; gap: 5px; }
.h2-empty-list { color: #91a4c2; font-size: 13px; padding: 8px 12px; }
.h2-history-item { display: grid; grid-template-columns: minmax(0, 1fr) 28px 28px; gap: 2px; align-items: center; border-radius: 10px; }
.h2-history-item.is-active { background: #23364f; }
#chat .h2-history-item button { border: 0; color: #d9e5f7; background: transparent; border-radius: 9px; cursor: pointer; }
#chat .h2-history-name { min-width: 0; padding: 11px 9px; text-align: left; white-space: nowrap; text-overflow: ellipsis; overflow: hidden; font: inherit; font-size: 13px; }
#chat .h2-history-tool { padding: 6px 2px; font-size: 17px; }
#chat .h2-sidebar-foot { color: #8295b3; border-top: 1px solid #2b3a55; padding: 14px 10px 0; margin: 8px 0 0; font-size: 12px; line-height: 1.4; }
.h2-main { min-width: 0; min-height: 0; height: 100dvh; display: flex; flex-direction: column; }
.h2-topbar { height: 65px; flex: 0 0 65px; display: flex; align-items: center; gap: 12px; padding: 0 25px; border-bottom: 1px solid #20304a; }
.h2-current-title { flex: 1; min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; font-weight: 650; color: #f0f8ff; }
#chat .h2-topbutton { border: 1px solid #374b68; border-radius: 11px; padding: 9px 13px; background: #1b2c46; color: #f5f9ff; cursor: pointer; white-space: nowrap; }
.h2-mobile-menu { display: none; }
.h2-status { max-width: 820px; width: calc(100% - 36px); margin: 10px auto 0; padding: 10px 14px; border: 1px solid #735d36; border-radius: 10px; background: #332a1b; color: #ffe0a2; font-size: 13px; }
.h2-status:empty, .h2-status[hidden] { display: none !important; }
#chat .h2-messages { flex: 1; width: 100%; max-width: 900px; margin: 0 auto; padding: 27px 30px; min-height: 0; overflow-y: auto; display: flex; flex-direction: column; gap: 21px; }
.h2-line { display: flex; flex-direction: column; max-width: 88%; gap: 7px; }
.h2-line.h2-user { align-self: flex-end; align-items: flex-end; }
.h2-line.h2-assistant { align-self: flex-start; align-items: flex-start; }
.h2-speaker { color: #9caec9; font-size: 12px; font-weight: 700; }
#chat .h2-bubble { color: #ecf4ff; background: #1b2940; border: 1px solid #293b57; border-radius: 17px; padding: 13px 17px; line-height: 1.7; font-size: 15px; white-space: pre-wrap; overflow-wrap: anywhere; }
#chat .h2-user .h2-bubble { background: #17475a; border-color: #246078; }
.h2-welcome { margin: auto; padding: 30px 10px; max-width: 580px; text-align: center; }
.h2-welcome-icon { color: #67e8f9; font-size: 46px; margin-bottom: 15px; }
#chat .h2-welcome h2 { color: #f3f8ff; font-size: clamp(22px, 3vw, 31px); margin: 0 0 12px; }
#chat .h2-welcome p { color: #9eb0cc; max-width: 450px; margin: 0 auto; font-size: 14px; }
.h2-composer-area { width: 100%; max-width: 880px; margin: 0 auto; padding: 13px 24px 18px; }
#chat #chat-form { display: flex; gap: 9px; margin: 0; padding: 9px 9px 9px 15px; align-items: flex-end; background: #182842; border: 1px solid #3d526e; border-radius: 18px; }
#chat #message-input { flex: 1; width: 100%; min-width: 0; min-height: 47px; max-height: 170px; padding: 10px 5px; border: 0; outline: none; resize: vertical; background: transparent; color: #fff; font: inherit; font-size: 15px; line-height: 1.5; }
#chat #message-input::placeholder { color: #9eb0c8; }
#chat #chat-form button { flex: 0 0 auto; background: #67e8f9; color: #0e2534; border: 0; border-radius: 12px; padding: 12px 16px; font-weight: 750; min-height: 43px; cursor: pointer; }
#chat .h2-disclaimer { text-align: center; color: #7f92b2; margin: 10px 0 0; font-size: 11px; }
.h2-overlay[hidden] { display: none !important; }
@media (max-width: 800px) {
    .h2-shell { grid-template-columns: minmax(0, 1fr); }
    .h2-sidebar { position: fixed; inset: 0 auto 0 0; width: min(85vw, 310px); z-index: 40; transform: translateX(-105%); transition: transform .18s ease; box-shadow: 10px 0 35px #0005; }
    .h2-sidebar.h2-sidebar-open { transform: translateX(0); }
    .h2-overlay { position: fixed; z-index: 39; inset: 0; background: #020711a8; }
    .h2-mobile-menu { display: inline-block; }
    .h2-topbar { padding: 0 13px; }
    #chat .h2-messages { padding: 22px 15px; }
    .h2-composer-area { padding: 9px 12px 15px; }
    .h2-line { max-width: 96%; }
}
@media (prefers-reduced-motion: reduce) {
    .h2-sidebar { transition: none; }
}


/* HANAI_RICH_MESSAGES_612 - Rich answers, safe fenced code and copy buttons */
#chat .h3-rich-content { white-space: normal; min-width: 0; }
#chat .h3-rich-content .h3-paragraph { color: inherit; margin: 0 0 11px; white-space: pre-wrap; overflow-wrap: anywhere; }
#chat .h3-rich-content .h3-paragraph:last-child { margin-bottom: 0; }
#chat .h3-rich-content .h3-heading { margin: 14px 0 8px; color: #f0f8ff; line-height: 1.4; font-size: 1.07em; }
#chat .h3-rich-content .h3-list { padding-left: 22px; margin: 8px 0 12px; }
#chat .h3-rich-content .h3-list li { margin: 5px 0; overflow-wrap: anywhere; }
#chat .h3-rich-content .h3-inline-code { border: 1px solid #425679; border-radius: 5px; background: #102035; padding: 2px 5px; color: #bff9ff; font: .92em Consolas, 'Cascadia Code', monospace; }
#chat .h3-rich-content .h3-codeblock { min-width: 0; max-width: 100%; overflow: hidden; border: 1px solid #3b4f6a; border-radius: 11px; background: #0c1829; margin: 12px 0; }
#chat .h3-rich-content .h3-codebar { display: flex; align-items: center; justify-content: space-between; gap: 12px; padding: 9px 12px; background: #162a41; color: #a9bfd9; font-size: 12px; }
#chat .h3-rich-content pre { max-width: 100%; overflow-x: auto; overflow-y: hidden; margin: 0; padding: 15px; background: transparent; color: #e2f4ff; font: 13px/1.65 Consolas, 'Cascadia Code', monospace; white-space: pre; tab-size: 4; }
#chat .h3-rich-content pre code { font: inherit; color: inherit; white-space: pre; }
#chat .h3-copy-code, #chat .h3-copy-answer { border: 1px solid #435a77; border-radius: 8px; padding: 6px 10px; background: #223550; color: #e6f4ff; font: 12px 'Segoe UI', Arial, sans-serif; cursor: pointer; }
#chat .h3-actions { display: flex; align-items: center; gap: 8px; margin-top: 2px; padding-left: 3px; }
#chat .h3-copy-answer { background: transparent; color: #a5bad6; border-color: #344761; }
#chat .h3-copy-answer:hover, #chat .h3-copy-code:hover { filter: brightness(1.2); }
@media (max-width: 600px) { #chat .h3-rich-content pre { font-size: 12px; padding: 12px; } }

/* HANAI_FRONTEND_STREAM_616: Stop control next to the composer Send button */
#chat #chat-form #stop-generation-button {
    background: #392f45;
    color: #f9dfeb;
    border: 1px solid #956b85;
    white-space: nowrap;
}
#chat #chat-form #stop-generation-button:not(:disabled) { cursor: pointer; }
#chat #chat-form #stop-generation-button:disabled { cursor: wait; opacity: .55; }
#chat .h3-actions[hidden], #chat #stop-generation-button[hidden] { display: none !important; }
@media (max-width: 600px) {
    #chat #chat-form #stop-generation-button { font-size: 12px; padding: 10px; }
}


/* HANAI_MODEL_SELECTOR_621 */
.hanai-model-label {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    min-width: 0;
    margin-left: auto;
}
.hanai-model-label-text {
    font-size: 12px;
    color: #a9b6cf;
    white-space: nowrap;
}
#hanai-model-select {
    max-width: 205px;
    min-width: 0;
    padding: 9px 10px;
    border-radius: 10px;
    border: 1px solid #42536b;
    background: #19283f;
    color: #f8fafc;
    font: inherit;
    font-size: 13px;
    cursor: pointer;
}
#hanai-model-select:focus-visible {
    outline: 2px solid #67e8f9;
    outline-offset: 2px;
}
@media (max-width: 600px) {
    .hanai-model-label-text {
        display: none;
    }
    #hanai-model-select {
        max-width: 155px;
        font-size: 12px;
        padding: 8px 5px;
    }
}

/* HANAI_MODEL_COMPOSER_622 — model selector inside the prompt box, ChatGPT-style. */
#chat #chat-form {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    column-gap: 9px;
    row-gap: 5px;
    padding: 10px 12px 10px 14px;
}
#chat #chat-form > #message-input {
    order: 0;
    flex: 1 0 100%;
    width: 100%;
    min-width: 0;
    min-height: 45px;
    padding: 7px 4px;
}
#chat #chat-form > .hanai-model-label {
    order: 1;
    display: flex;
    flex: 1 1 0;
    align-items: center;
    justify-content: flex-start;
    min-width: 0;
    max-width: none;
    width: auto;
    margin: 0 auto 0 0;
}
#chat #chat-form .hanai-model-label-text { display: none; }
#chat #chat-form #hanai-model-select {
    width: 187px;
    max-width: 100%;
    min-height: 36px;
    padding: 7px 10px;
    border-radius: 10px;
    border: 1px solid #445b79;
    background: #243650;
    color: #eef7ff;
    font-size: 13px;
    cursor: pointer;
}
#chat #chat-form #hanai-model-select:hover { border-color: #6f8bab; }
#chat #chat-form > button[type="submit"],
#chat #chat-form > #stop-generation-button {
    order: 2;
    align-self: center;
    margin: 0;
}
@media (max-width: 600px) {
    #chat #chat-form { column-gap: 6px; padding: 9px 10px; }
    #chat #chat-form #hanai-model-select {
        width: 155px;
        max-width: min(45vw, 155px);
        font-size: 12px;
        padding: 7px 5px;
    }
}

/* HANAI_REGENERATE_UI_626: latest answer action, no other chat CSS changes. */
#chat .h3-actions { flex-wrap: wrap; }
#chat .h3-regenerate-answer {
    background: transparent;
    color: #bad4ee;
    border: 1px solid #344761;
    border-radius: 8px;
    padding: 6px 10px;
    font: 12px 'Segoe UI', Arial, sans-serif;
    cursor: pointer;
}
#chat .h3-regenerate-answer:hover:not(:disabled) {
    color: #f1faff;
    border-color: #7692b1;
}
#chat .h3-regenerate-answer:disabled { opacity: .46; cursor: not-allowed; }
#chat .h3-regenerating .h2-bubble { opacity: .82; }

/* HANAI_EDIT_UI_631: inline editing of saved user messages. */
#chat .h4-edit-message {
    background: transparent; color: #bdd6e8;
    border: 1px solid #416077; border-radius: 8px;
    padding: 5px 10px; font: 12px 'Segoe UI', Arial, sans-serif;
    cursor: pointer;
}
#chat .h4-edit-message:hover:not(:disabled) { border-color: #8cc7df; color: #fff; }
#chat .h4-edit-message:disabled { opacity: .48; cursor: not-allowed; }
#chat .h2-user .h4-edit-actions { display: flex; align-items: center; justify-content: flex-end; padding-right: 3px; }
#chat .h2-user .h4-editing { width: min(540px, 78vw); max-width: 100%; box-sizing: border-box; }
#chat .h4-edit-input {
    display: block; box-sizing: border-box; width: 100%; min-height: 110px;
    max-height: 270px; overflow-y: auto; resize: vertical;
    background: #122b40; color: #f2f9ff; border: 1px solid #6094b1;
    border-radius: 10px; padding: 11px; font: inherit; line-height: 1.6;
}
#chat .h4-edit-input:focus-visible { outline: 2px solid #67e8f9; outline-offset: 2px; }
#chat .h4-edit-tools { display: flex; justify-content: flex-end; flex-wrap: wrap; gap: 8px; margin-top: 11px; }
#chat .h4-edit-tools button {
    border: 1px solid #56839b; border-radius: 10px;
    padding: 7px 12px; background: #214c62; color: #f1f9ff;
    font: 13px 'Segoe UI', Arial, sans-serif; cursor: pointer;
}
#chat .h4-edit-tools button.h4-save { background: #177991; border-color: #2699b7; font-weight: 600; }
#chat .h4-edit-tools button:disabled { opacity: .5; cursor: not-allowed; }
@media (max-width: 600px) {
    #chat .h2-user .h4-editing { width: 72vw; }
    #chat .h4-edit-tools button { padding: 8px; font-size: 12px; }
}

/* HANAI_VERSION_UI_639: authenticated versions viewer and copy-only restore */
#chat .h5-versions-trigger { white-space: nowrap; font-size: 13px; }
#chat .h5-versions-trigger[hidden] { display: none !important; }
#chat .h5-versions-overlay[hidden] { display: none !important; }
#chat .h5-versions-overlay {
    position: fixed; inset: 0; z-index: 1000;
    background: rgba(5, 13, 24, .82);
    display: flex; align-items: center; justify-content: center;
    padding: 16px; box-sizing: border-box;
}
#chat .h5-versions-dialog {
    display: flex; flex-direction: column; width: min(960px, 96vw);
    max-height: min(88vh, 850px); overflow: hidden;
    background: #0d2032; border: 1px solid #426079;
    color: #ecf4fc; border-radius: 16px; box-shadow: 0 24px 70px rgba(0,0,0,.4);
    padding: 18px; gap: 12px; box-sizing: border-box;
}
#chat .h5-versions-header { display: flex; align-items: center; justify-content: space-between; gap: 12px; }
#chat .h5-versions-header h2 { font-size: 19px; font-weight: 650; margin: 0; }
#chat .h5-versions-header button,
#chat .h5-versions-footer button {
    font: inherit; font-size: 13px; color: #f3fcff; background: #21506c;
    border: 1px solid #58839d; border-radius: 9px; padding: 9px 12px; cursor: pointer;
}
#chat .h5-versions-footer button { background: #147f92; border-color: #24a1b5; font-weight: 650; }
#chat .h5-versions-dialog button:focus-visible { outline: 2px solid #67e8f9; outline-offset: 2px; }
#chat .h5-versions-dialog button:disabled { opacity: .48; cursor: not-allowed; }
#chat .h5-versions-intro { color: #b2c7d7; margin: 0; line-height: 1.5; font-size: 13px; }
#chat .h5-versions-status { min-height: 20px; margin: 0; color: #a2dfec; font-size: 13px; }
#chat .h5-versions-columns { display: grid; grid-template-columns: minmax(180px, .8fr) minmax(0, 2fr); gap: 12px; min-height: 0; flex: 1; }
#chat .h5-versions-list { display: flex; flex-direction: column; gap: 7px; overflow-y: auto; padding: 2px; min-height: 0; }
#chat .h5-version-item {
    display: flex; flex-direction: column; gap: 4px; align-items: flex-start;
    background: #192f42; color: #eff7ff; text-align: left;
    border: 1px solid #3a5770; border-radius: 10px; padding: 10px; cursor: pointer;
}
#chat .h5-version-item small { color: #a6c0d3; font-size: 11px; }
#chat .h5-version-item[aria-pressed="true"] { border-color: #59c2d6; background: #174154; }
#chat .h5-empty { font-size: 13px; color: #b7cada; line-height: 1.5; }
#chat .h5-versions-preview-wrap { display: flex; min-height: 0; flex-direction: column; gap: 7px; }
#chat .h5-versions-preview-wrap h3 { font-size: 14px; margin: 0; }
#chat .h5-versions-preview { flex: 1; min-height: 0; overflow: auto; padding: 10px; background: #101e2c; border: 1px solid #2e4a61; border-radius: 10px; }
#chat .h5-preview-info { color: #9eb5c8; font-size: 12px; margin: 4px 0 10px; }
#chat .h5-version-message { border-radius: 9px; background: #1a3448; padding: 10px; margin: 8px 0; }
#chat .h5-version-message.h5-user { background: #244355; }
#chat .h5-version-message strong { font-size: 12px; }
#chat .h5-version-message p { white-space: pre-wrap; overflow-wrap: anywhere; font-size: 13px; line-height: 1.55; margin: 6px 0 0; }
#chat .h5-versions-footer { display: flex; align-items: center; justify-content: space-between; gap: 12px; }
#chat .h5-versions-footer p { font-size: 12px; line-height: 1.5; color: #aac4d5; margin: 0; }
@media (max-width: 660px) {
    #chat .h5-versions-trigger { font-size: 11px; padding: 7px 8px; }
    #chat .h5-versions-dialog { padding: 12px; max-height: 92vh; }
    #chat .h5-versions-columns { grid-template-columns: 1fr; grid-template-rows: minmax(90px, 25%) minmax(130px, 1fr); }
    #chat .h5-versions-list { flex-direction: row; overflow-x: auto; overflow-y: hidden; }
    #chat .h5-version-item { min-width: 142px; }
    #chat .h5-versions-footer { flex-direction: column; align-items: stretch; }
}

/* HANAI_FILES_UI_711: private file manager (no chat-context binding yet). */
#chat .h6-files-overlay[hidden] { display: none !important; }
#chat .h6-files-overlay {
    position: fixed; inset: 0; z-index: 1100;
    display: flex; align-items: center; justify-content: center;
    padding: 14px; background: rgba(5, 13, 24, .82); box-sizing: border-box;
}
#chat .h6-files-dialog {
    width: min(680px, 96vw); max-height: 86vh; overflow: hidden;
    display: flex; flex-direction: column; gap: 12px;
    padding: 19px; border-radius: 16px; box-sizing: border-box;
    color: #eff8ff; background: #102335; border: 1px solid #456479;
    box-shadow: 0 24px 70px rgba(0,0,0,.43);
}
#chat .h6-files-header { display: flex; align-items: center; justify-content: space-between; gap: 12px; }
#chat .h6-files-header h2 { font-size: 19px; margin: 0; }
#chat .h6-files-dialog button, #chat .h6-file-item-actions a {
    color: #f3fbff; background: #214d68; border: 1px solid #56829c;
    border-radius: 9px; padding: 8px 12px; font: inherit; font-size: 13px;
    text-decoration: none; cursor: pointer;
}
#chat .h6-files-dialog button:disabled { opacity: .5; cursor: not-allowed; }
#chat .h6-files-dialog button:focus-visible, #chat .h6-file-item-actions a:focus-visible,
#chat .h6-files-upload:focus-visible { outline: 2px solid #67e8f9; outline-offset: 2px; }
#chat .h6-files-help { margin: 0; color: #b8cddb; font-size: 13px; line-height: 1.55; }
#chat .h6-files-actions { display: flex; gap: 8px; flex-wrap: wrap; }
#chat .h6-files-status { margin: 0; color: #a4d8e7; font-size: 13px; min-height: 18px; }
#chat .h6-files-list { overflow-y: auto; min-height: 80px; display: flex; flex-direction: column; gap: 8px; }
#chat .h6-file-item {
    display: flex; align-items: center; justify-content: space-between; gap: 12px;
    padding: 10px; border: 1px solid #3a566b; background: #1a3345; border-radius: 10px;
}
#chat .h6-file-info { display: flex; flex-direction: column; gap: 5px; min-width: 0; overflow: hidden; }
#chat .h6-file-info strong { overflow-wrap: anywhere; font-size: 13px; }
#chat .h6-file-info small { color: #a5c5d5; font-size: 11px; }
#chat .h6-file-item-actions { display: flex; gap: 7px; flex-shrink: 0; }
#chat .h6-files-upload {
    font-size: 13px; color: #dcf7ff; background: #16415d;
    border: 1px solid #4c8fab; border-radius: 9px; padding: 9px 12px;
    cursor: pointer; white-space: nowrap;
}
#chat .h6-files-upload:disabled { opacity: .5; cursor: not-allowed; }
#chat .h6-files-hint { font-size: 11px; color: #afc4d4; margin: 5px 0 2px; line-height: 1.5; }
@media (max-width: 660px) {
    #chat .h6-files-top { font-size: 11px; padding: 7px 8px; }
    #chat .h6-files-dialog { padding: 12px; max-height: 92vh; }
    #chat .h6-file-item { align-items: flex-start; flex-direction: column; }
    #chat .h6-file-item-actions { flex-wrap: wrap; }
    #chat .h6-files-upload { font-size: 11px; padding: 7px 9px; }
}

/* HANAI_COMPOSER_PREVIEW_712: ChatGPT-like file tile above text input. */
#chat #chat-form > #hanai-attachment-card[hidden] { display: none !important; }
#chat #chat-form > #hanai-attachment-card {
    order: -1; flex: 1 0 100%; min-width: 0;
    display: flex; flex-direction: column; align-items: flex-start;
    padding: 0 0 5px; margin: 0;
}
#chat .h7-attachment-row {
    position: relative; width: min(100%, 290px); min-height: 84px;
    display: flex; gap: 10px; align-items: center;
    background: #263449; border: 1px solid #506176; border-radius: 13px;
    padding: 8px 34px 8px 8px; box-sizing: border-box;
    box-shadow: 0 5px 18px rgba(0,0,0,.12);
}
#chat .h7-attachment-thumbnail {
    flex: 0 0 70px; width: 70px; height: 68px;
    display: flex; justify-content: center; align-items: center;
    border-radius: 9px; overflow: hidden;
    background: #35495e; color: #f2faff;
}
#chat .h7-attachment-thumbnail img {
    width: 100%; height: 100%; object-fit: cover; display: block;
}
#chat .h7-attachment-fileicon {
    font-size: 19px; font-weight: 800; letter-spacing: -.5px;
}
#chat .h7-attachment-info {
    display: flex; flex-direction: column; gap: 6px; min-width: 0;
}
#chat .h7-attachment-info strong {
    color: #fff; font-size: 12px; font-weight: 650;
    overflow: hidden; text-overflow: ellipsis;
    display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical;
    overflow-wrap: anywhere;
}
#chat .h7-attachment-info span { color: #b5cfe1; font-size: 10.5px; line-height: 1.4; }
#chat #chat-form #hanai-attachment-remove {
    position: absolute; top: 4px; right: 4px;
    width: 24px; height: 24px; min-height: 24px; padding: 0;
    border-radius: 50%; background: #536376; color: white;
    font-size: 14px; display: grid; place-items: center;
}
#chat #chat-form #hanai-attachment-remove:focus-visible {
    outline: 2px solid #67e8f9; outline-offset: 2px;
}
#chat #chat-form #hanai-attachment-remove:disabled {
    cursor: wait; opacity: .45;
}
#chat .h7-attachment-disclaimer {
    color: #b4c4d5; font-size: 10.5px; margin: 7px 0 0;
    line-height: 1.45;
}
#chat #hanai-attachment-card[data-status="uploading"] .h7-attachment-thumbnail { opacity: .7; }
#chat #hanai-attachment-card[data-status="failed"] .h7-attachment-row { border-color: #e99a93; }
@media (max-width: 600px) {
    #chat .h7-attachment-row { width: min(100%, 260px); }
    #chat .h7-attachment-thumbnail { flex-basis: 60px; width: 60px; height: 62px; }
}

/* HANAI_FILE_PREVIEW_UI_718: safe extracted content displayed inside a modal. */
#chat .h8-preview-overlay[hidden], #chat #hanai-attachment-open[hidden] { display: none !important; }
#chat .h8-preview-overlay {
    position: fixed; inset: 0; z-index: 1250; display: flex;
    align-items: center; justify-content: center; box-sizing: border-box;
    padding: 14px; background: rgba(3,11,23,.86);
}
#chat .h8-preview-dialog {
    width: min(820px, 96vw); max-height: 90vh; overflow: hidden;
    display: flex; flex-direction: column; gap: 10px; box-sizing: border-box;
    background: #112638; border: 1px solid #4c667b; border-radius: 17px;
    color: #f1f8fe; padding: 18px; box-shadow: 0 20px 60px rgba(0,0,0,.5);
}
#chat .h8-preview-header { display: flex; align-items: center; justify-content: space-between; gap: 10px; }
#chat .h8-preview-header h2 { margin: 0; font-size: 18px; }
#chat .h8-preview-header button, #chat .h8-preview-card-open {
    border: 1px solid #6390a7; border-radius: 9px; color: #e4faff;
    background: #214e68; padding: 7px 10px; font: inherit;
    font-size: 12px; cursor: pointer;
}
#chat .h8-preview-header button:focus-visible, #chat .h8-preview-card-open:focus-visible {
    outline: 2px solid #67e8f9; outline-offset: 2px;
}
#chat #chat-form #hanai-attachment-open {
    position: absolute; right: 8px; bottom: 8px; z-index: 2;
    font-size: 10px; padding: 5px 7px; border-radius: 8px;
    background: #21576a; color: white; border: 1px solid #78a5b2;
}
#chat #hanai-attachment-open:disabled { opacity: .5; cursor: not-allowed; }
#chat .h8-preview-filename { margin: 0; font-size: 12px; color: #a6d7ee; overflow-wrap: anywhere; }
#chat .h8-preview-status { margin: 0; font-size: 13px; color: #a0d9ea; min-height: 20px; }
#chat .h8-preview-text {
    margin: 0; overflow: auto; min-height: 70px; max-height: 60vh;
    padding: 14px; border-radius: 10px; background: #0c1a2b; color: #eef8ff;
    font-family: ui-monospace, Consolas, monospace; font-size: 12px;
    line-height: 1.55; white-space: pre-wrap; overflow-wrap: anywhere;
    border: 1px solid #34506b; user-select: text;
}
#chat .h8-preview-warnings { margin: 0; white-space: pre-wrap; overflow-wrap: anywhere; color: #f3ca9b; font-size: 12px; }
#chat .h8-preview-disclaimer { margin: 0; font-size: 11px; color: #aac3d6; line-height: 1.5; }
@media (max-width: 600px) {
    #chat .h8-preview-dialog { padding: 11px; max-height: 95vh; }
    #chat .h8-preview-text { padding: 10px; max-height: 58vh; }
    #chat .h6-file-item-actions { gap: 4px; }
}
/* HANAI_CHAT_FILE_CONTEXT_720: chat sends owner-scoped stored file ID; existing styles retained. */

/* HANAI_MESSAGE_FILE_LINKS_721: visible owner-scoped chat attachment cards */
.h21-message-file { display:flex; align-items:center; gap:9px; padding:9px;
    margin-bottom:11px; max-width:380px; border:1px solid var(--border, #424d5d);
    border-radius:12px; background:rgba(127,127,127,.075); flex-wrap:wrap; }
.h21-message-file-icon { background:rgba(95,143,180,.14); border-radius:8px;
    padding:9px; font-size:12px; font-weight:700; letter-spacing:.2px; }
.h21-message-file-info { display:flex; flex-direction:column; gap:3px;
    min-width:0; flex:1 1 110px; }
.h21-message-file-name { overflow-wrap:anywhere; font-size:12px; font-weight:600; }
.h21-message-file-info small { font-size:11px; opacity:.7; }
.h21-message-file button, .h21-message-file a { font-size:11px; cursor:pointer;
    border:1px solid var(--border, #485064); border-radius:7px;
    padding:5px 7px; color:inherit; background:transparent; text-decoration:none; }
.h21-message-file button:hover, .h21-message-file a:hover { background:rgba(127,127,127,.17); }

/* HANAI_MULTI_ATTACHMENTS_723: multi-file composer rail */
.h23-attachment-rail { display:flex; gap:8px; flex-wrap:wrap; margin:7px 0; }
.h23-attachment-card { display:flex; align-items:center; gap:7px; min-width:0;
    max-width:340px; border:1px solid var(--border, #455062); border-radius:11px;
    background:rgba(127,127,127,.075); padding:7px 9px; }
.h23-attachment-icon { font-weight:700; font-size:11px; padding:8px;
    background:rgba(95,143,180,.14); border-radius:7px; }
.h23-attachment-name { min-width:0; overflow-wrap:anywhere; font-size:12px; }
.h23-attachment-card button { border:1px solid var(--border,#455062); border-radius:7px;
    color:inherit; background:transparent; cursor:pointer; padding:5px; }
.h23-attachment-card button:disabled { opacity:.5; cursor:default; }
/* HANAI_VISION_725: image requests use local vision; existing styles unchanged. */

/* HANAI_WORD_EDITOR_UI_727: explicit, owner-scoped .docx editing dialog. */
#chat .h27-overlay[hidden], #chat .h27-result[hidden] {display:none!important}
#chat .h27-overlay {position:fixed;inset:0;z-index:1450;display:flex;align-items:center;
  justify-content:center;padding:14px;background:rgba(3,11,23,.88);box-sizing:border-box}
#chat .h27-dialog {display:flex;flex-direction:column;gap:10px;max-height:92vh;overflow:auto;
  width:min(620px,96vw);box-sizing:border-box;background:#112638;color:#eef9ff;
  border:1px solid #50738d;border-radius:16px;padding:19px;box-shadow:0 24px 70px rgba(0,0,0,.5)}
#chat .h27-header {display:flex;justify-content:space-between;align-items:center;gap:12px}
#chat .h27-header h2 {font-size:19px;margin:0}
#chat .h27-note {margin:0;color:#acc7d9;font-size:12px;line-height:1.55}
#chat .h27-label {font-weight:650;font-size:13px}
#chat .h27-dialog select,#chat .h27-dialog textarea {width:100%;box-sizing:border-box;min-height:40px;
  font:inherit;font-size:14px;border:1px solid #59778d;border-radius:9px;padding:9px;
  background:#0e2033;color:#eef9ff}
#chat .h27-dialog textarea {resize:vertical;min-height:95px}
#chat .h27-dialog button,#chat .h27-result a,#chat #hanai-word-edit-selected {cursor:pointer;
  font:inherit;font-size:12px;color:#eefbff;background:#18536b;border:1px solid #5596af;
  border-radius:9px;padding:8px 12px;text-decoration:none}
#chat .h27-dialog button:disabled {opacity:.5;cursor:not-allowed}
#chat .h27-status {margin:2px 0;color:#c6e9fb;font-size:12px;line-height:1.5;overflow-wrap:anywhere}
#chat .h27-actions {display:flex;gap:8px;flex-wrap:wrap;justify-content:flex-end}
#chat .h27-result {display:flex;flex-direction:column;gap:8px;padding:12px;
  background:#13384a;border:1px solid #4d95ac;border-radius:10px}
#chat .h27-result strong {font-size:13px;overflow-wrap:anywhere}
#chat .h27-result p {font-size:12px;margin:0;color:#a9ddec}
#chat .h27-result a {display:inline-flex;width:fit-content}
#chat .h27-dialog button:focus-visible,#chat .h27-result a:focus-visible,
#chat #hanai-word-edit-selected:focus-visible {outline:2px solid #79eeff;outline-offset:2px}
@media(max-width:600px){#chat .h27-dialog{padding:12px}}