style.css

:root {
    --bg: #0f1117;
    --panel: #151926;
    --panel-2: #1c2130;
    --line: #2a3144;
    --text: #e8edf8;
    --muted: #9ca6bd;
    --accent: #fbbf24;
    --accent-strong: #f59e0b;
}

html,
body {
    margin: 0 !important;
    padding: 0 !important;
    overflow: hidden !important;
    height: 100dvh !important;
    max-height: 100dvh !important;
    background: var(--bg);
    color: var(--text);
    position: fixed !important;
    inset: 0 !important;
    width: 100vw !important;
}

/* HF Spaces iframe guard: force all Gradio wrappers to stay viewport-locked */
.gradio-container,
.gradio-container > *,
.gradio-container > .main,
.gradio-container > .main > .wrap,
.gradio-container > .main > .wrap > *,
.app,
.app > * {
    height: 100dvh !important;
    max-height: 100dvh !important;
    overflow: hidden !important;
    margin: 0 !important;
}

.gradio-container,
.gradio-container > .main,
.gradio-container > .main > .wrap {
    position: fixed !important;
    inset: 0 !important;
    width: 100vw !important;
    max-width: 100vw !important;
    padding: 0 !important;
    gap: 0 !important;
}

footer {
    display: none !important;
}

#sidebar {
    position: fixed;
    left: 0;
    top: 0;
    bottom: 0;
    width: 272px;
    background: linear-gradient(180deg, #101420 0%, #0f1117 100%);
    border-right: 1px solid var(--line);
    display: flex;
    flex-direction: column;
    padding: 10px;
    box-sizing: border-box;
    z-index: 200;
}

.sb-top {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 12px;
}

.sb-logo {
    font-size: 0.9rem;
    font-weight: 650;
    color: #dce4f7;
}

.sb-icon-btn,
.sb-new-chat,
.sb-item,
.sb-bottom-item {
    border: 1px solid transparent;
    background: transparent;
    color: var(--muted);
    cursor: pointer;
    transition: all 0.15s ease;
}

.sb-icon-btn {
    width: 34px;
    height: 34px;
    border-radius: 9px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.sb-icon-btn:hover {
    color: var(--text);
    background: var(--panel-2);
    border-color: var(--line);
}

.sb-new-chat {
    width: 100%;
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 10px;
    border-radius: 10px;
    font-size: 0.85rem;
    margin-bottom: 8px;
    text-align: left;
}

.sb-new-chat svg {
    width: 16px;
    height: 16px;
}

.sb-new-chat:hover {
    color: var(--text);
    background: var(--panel-2);
    border-color: var(--line);
}

.sb-section-label {
    color: #7f8aa5;
    font-size: 0.72rem;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    margin: 8px 8px 4px;
}

.sb-item {
    width: 100%;
    text-align: left;
    padding: 9px 10px;
    border-radius: 9px;
    font-size: 0.83rem;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.sb-item:hover,
.sb-item.is-active {
    color: var(--text);
    background: var(--panel-2);
    border-color: var(--line);
}

.sb-spacer {
    flex: 1;
}

.sb-bottom {
    display: grid;
    gap: 6px;
}

.sb-bottom-item {
    width: 100%;
    text-align: left;
    padding: 9px 10px;
    border-radius: 9px;
    font-size: 0.8rem;
}

.sb-bottom-item:hover {
    color: var(--text);
    background: var(--panel-2);
    border-color: var(--line);
}

#main-col {
    position: fixed !important;
    top: 0;
    bottom: 0;
    left: 272px;
    right: 0;
    display: flex;
    flex-direction: column;
    background: radial-gradient(circle at 20% 0%, #151a2b 0%, #0f1117 45%);
    overflow: hidden;
    padding: 0 !important;
    margin: 0 !important;
}

#welcome {
    flex: 1;
    min-height: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 10px;
    padding: 0 24px 150px;
}

#welcome-kicker {
    margin: 0;
    color: #f6d88e;
    font-size: 0.84rem;
    letter-spacing: 0.05em;
    text-transform: uppercase;
}

#welcome-title {
    margin: 0;
    color: #f5f7fd;
    font-size: clamp(1.5rem, 2.7vw, 2.2rem);
    font-weight: 680;
    text-align: center;
}

#welcome-sub {
    margin: 0;
    color: var(--muted);
    font-size: 0.92rem;
    text-align: center;
}

#pills-row {
    margin-top: 10px;
    max-width: 760px;
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 8px;
}

.pill {
    background: rgba(28, 33, 48, 0.92);
    border: 1px solid var(--line);
    border-radius: 999px;
    padding: 8px 14px;
    color: #d1d9eb;
    font-size: 0.82rem;
    cursor: pointer;
}

.pill:hover {
    background: #22283a;
    border-color: #39445f;
}

#chatbot {
    flex: 1;
    min-height: 0;
    overflow-y: auto;
    border: none !important;
    border-radius: 0 !important;
    box-shadow: none !important;
    background: transparent !important;
    padding-bottom: 170px !important;
}

#chatbot > div {
    max-width: 860px;
    margin: 0 auto;
    padding: 20px 14px;
    background: transparent !important;
}

#chatbot .bubble-wrap {
    background: transparent !important;
}

#chatbot [data-testid="user"] > div {
    background: #1c2130 !important;
    border: 1px solid var(--line);
    border-radius: 14px !important;
}

#chatbot [data-testid="assistant"] > div {
    background: transparent !important;
}

#chatbot .prose {
    color: #e7ecf7 !important;
    line-height: 1.55;
}

#chatbot img {
    border-radius: 12px;
    margin-top: 8px;
    border: 1px solid var(--line);
}

#steps-box {
    max-width: 860px;
    width: 100%;
    margin: 0 auto 8px;
    background: transparent !important;
    border: none !important;
    padding: 0 14px !important;
}

.steps-toggle {
    background: none;
    border: none;
    color: #7f8aa5;
    font-size: 0.73rem;
    cursor: pointer;
    padding: 3px 2px;
    display: flex;
    align-items: center;
    gap: 4px;
}

.steps-toggle:hover {
    color: #abb6cf;
}

.steps-content {
    display: none;
    margin-top: 6px;
    background: #151927;
    border: 1px solid var(--line);
    border-radius: 10px;
    padding: 11px 12px;
    color: #c8d1e5;
    font-size: 0.78rem;
}

.steps-content pre {
    margin: 0;
    background: #1d2434;
    border: 1px solid #303b55;
    border-radius: 8px;
    padding: 7px 8px;
    color: #dce5f8;
    white-space: pre-wrap;
}

.step-tool {
    font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
    background: #29314a;
    border: 1px solid #3a4665;
    color: #f7d794;
    border-radius: 7px;
    padding: 2px 6px;
    margin-left: 8px;
    font-size: 0.72rem;
}

#input-bar {
    position: fixed !important;
    left: 272px;
    right: 0;
    bottom: 0;
    z-index: 110;
    padding: 20px clamp(14px, calc(50% - 430px), 110px) 12px;
    background: linear-gradient(to top, #0f1117 74%, rgba(15, 17, 23, 0));
}

#input-container {
    display: flex;
    flex-direction: column;
    border-radius: 16px;
    background: #161b29;
    border: 1px solid #2f3850;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.25);
}

#input-container:focus-within {
    border-color: #4a5980;
}

#input-container #msg-box {
    border: none !important;
    box-shadow: none !important;
    background: transparent;
}

#input-container #msg-box textarea {
    min-height: 48px !important;
    max-height: 160px !important;
    padding: 14px 16px 6px !important;
    border: none !important;
    outline: none !important;
    box-shadow: none !important;
    background: transparent !important;
    color: var(--text) !important;
    font-size: 0.95rem !important;
    line-height: 1.4;
    resize: none !important;
}

#input-container #msg-box textarea::placeholder {
    color: #73809f !important;
}

#input-bottom {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 10px 10px;
}

.input-left,
.input-right {
    display: flex;
    align-items: center;
    gap: 8px;
}

.add-btn {
    width: 30px;
    height: 30px;
    border-radius: 8px;
    border: 1px solid #394560;
    background: #20273a;
    color: #bcc7e2;
    font-size: 1rem;
    cursor: pointer;
}

.add-btn:hover {
    background: #27304a;
}

.mcp-pill {
    display: flex;
    align-items: center;
    gap: 6px;
    border-radius: 999px;
    border: 1px solid #394560;
    background: #20273a;
    padding: 4px 10px;
    color: #c7d2ec;
    font-size: 0.75rem;
}

.mcp-dot {
    width: 7px;
    height: 7px;
    border-radius: 999px;
    background: #34d399;
}

#send-btn {
    display: none !important;
}

.send-visual-btn {
    width: 34px;
    height: 34px;
    border-radius: 10px;
    border: none;
    background: var(--accent);
    color: #1b1300;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
}

.send-visual-btn:hover {
    background: var(--accent-strong);
}

#input-note {
    text-align: center;
    color: #73809f;
    font-size: 0.7rem;
    padding: 5px 0 7px;
}

@media (max-width: 880px) {
    #sidebar {
        width: 76px;
        padding: 10px 8px;
    }

    .sb-logo,
    .sb-section-label,
    .sb-item,
    .sb-bottom-item,
    .sb-new-chat span {
        display: none;
    }

    .sb-new-chat {
        justify-content: center;
    }

    #main-col,
    #input-bar {
        left: 76px;
    }
}

@media (max-width: 620px) {
    #sidebar {
        display: none;
    }

    #main-col,
    #input-bar {
        left: 0;
    }

    #input-bar {
        padding-left: 10px;
        padding-right: 10px;
    }

    #chatbot > div {
        padding-left: 10px;
        padding-right: 10px;
    }

    .mcp-pill {
        display: none;
    }
}