:root {
    color-scheme: light;
    --bg: #ffffff;
    --surface: #f8fafd;
    --surface-strong: #f1f3f4;
    --text: #1f1f1f;
    --muted: #5f6368;
    --border: #e8eaed;
    --primary: #1a73e8;
    --primary-soft: #e8f0fe;
    --shadow: 0 18px 50px rgba(60, 64, 67, 0.12);
}

* {
    box-sizing: border-box;
}

body {
    background: var(--bg);
    color: var(--text);
    font-family: Inter, "Segoe UI", system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
    margin: 0;
}

.brand-link,
.nav-link {
    color: inherit;
    text-decoration: none;
}

.quota-card,
.support-ticket-detail {
    background: rgba(255,255,255,.82);
    border: 1px solid #d2e3fc;
    border-radius: 18px;
    display: grid;
    gap: 8px;
    margin: 10px auto 0;
    max-width: 820px;
    padding: 12px;
}

.quota-plans,
.support-ticket-list,
.support-thread,
.support-reply-box {
    display: grid;
    gap: 8px;
}

.quota-plans {
    grid-template-columns: repeat(4, minmax(0, 1fr));
}

.quota-plans span {
    background: #e8f0fe;
    border-radius: 999px;
    color: #174ea6;
    font-size: .78rem;
    padding: 6px 8px;
    text-align: center;
}

.support-ticket-card {
    background: #f8fafd;
    border: 1px solid #e8eaed;
    border-radius: 14px;
    color: inherit;
    cursor: pointer;
    display: grid;
    gap: 4px;
    padding: 10px;
    text-align: left;
    width: 100%;
}

.support-ticket-card.active {
    border-color: #174ea6;
}

.support-thread-message {
    background: #fff;
    border-radius: 14px;
    padding: 9px 10px;
}

.support-thread-message.admin {
    background: #e6f4ea;
}

.message-actions {
    display: flex;
    gap: 6px;
    margin-top: 6px;
}

.brand-home {
    align-items: center;
    display: inline-flex;
    gap: 8px;
    min-width: 0;
}

.top-actions form {
    align-items: center;
    display: flex;
    margin: 0;
}

.history-search {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 14px;
    margin: 0 0 12px;
    outline: none;
    padding: 10px 12px;
    width: 100%;
}

.sidebar-section-title {
    color: var(--muted);
    font-size: 0.72rem;
    font-weight: 700;
    letter-spacing: 0.1em;
    margin: 16px 0 8px;
    text-transform: uppercase;
}

.favorites-box {
    border-top: 1px solid var(--border);
    display: grid;
    gap: 10px;
    margin-top: 20px;
    padding-top: 16px;
}

.favorites-list {
    display: grid;
    gap: 8px;
}

.favorite-item {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 14px;
    color: inherit;
    cursor: pointer;
    display: grid;
    gap: 4px;
    padding: 10px;
    text-align: left;
    width: 100%;
}

.password-field {
    display: grid;
    grid-template-columns: 1fr auto;
    gap: 8px;
}

.password-field input {
    min-width: 0;
}

.password-toggle {
    align-items: center;
    justify-content: center;
    min-width: 44px;
}

.checkbox-field {
    align-items: center;
    color: var(--muted);
    display: flex;
    gap: 8px;
    font-size: 0.92rem;
}

.checkbox-field input {
    width: auto;
}

.text-button {
    background: transparent !important;
    color: var(--primary) !important;
    justify-content: center;
    padding-inline: 0 !important;
}

.panel-note {
    color: var(--muted);
    line-height: 1.45;
    margin: 0;
}

.response-mode {
    border: 0;
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin: 14px 0 0;
    padding: 0;
}

.response-mode label {
    align-items: center;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 999px;
    color: var(--muted);
    display: inline-flex;
    gap: 7px;
    padding: 8px 12px;
}

.response-mode label:has(input:checked) {
    background: var(--primary-soft);
    border-color: #d2e3fc;
    color: #174ea6;
}

.language-select-hidden {
    display: none !important;
}

.language-chip {
    white-space: nowrap;
}

.language-dialog {
    align-items: center;
    background: rgba(32, 33, 36, 0.42);
    display: none;
    inset: 0;
    justify-content: center;
    padding: 18px;
    position: fixed;
    z-index: 100;
}

.language-dialog.open,
.language-dialog[aria-hidden="false"] {
    display: flex;
}

.language-dialog-card {
    background: #fff;
    border: 1px solid var(--border);
    border-radius: 28px;
    box-shadow: var(--shadow);
    display: grid;
    gap: 14px;
    max-width: 620px;
    padding: 26px;
    width: 100%;
}

.language-dialog-card h2,
.language-dialog-card p {
    margin: 0;
}

.language-options {
    display: grid;
    gap: 8px;
    grid-template-columns: repeat(2, minmax(0, 1fr));
}

.language-option {
    align-items: center;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 16px;
    cursor: pointer;
    display: flex;
    gap: 8px;
    padding: 10px 12px;
}

.language-option.active,
.language-option:has(input:checked) {
    background: var(--primary-soft);
    border-color: #d2e3fc;
    color: #174ea6;
}

.language-confirm {
    align-items: center;
    background: var(--primary);
    border: 0;
    border-radius: 999px;
    color: #fff;
    display: inline-flex;
    justify-content: center;
    padding: 11px 18px;
}

.message-actions button {
    align-items: center;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 999px;
    color: var(--muted);
    display: inline-flex;
    height: 34px;
    justify-content: center;
    padding: 0;
    width: 34px;
}

.message-actions button.active {
    background: var(--primary-soft);
    color: #174ea6;
}

.message-actions svg {
    fill: none;
    height: 17px;
    stroke: currentColor;
    stroke-linecap: round;
    stroke-linejoin: round;
    stroke-width: 2;
    width: 17px;
}

.source-panel,
.followup-suggestions,
.feedback-reasons {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 16px;
    display: grid;
    gap: 8px;
    margin-top: 8px;
    padding: 10px;
}

.followup-suggestions button,
.feedback-reasons button {
    background: #fff;
    border: 1px solid var(--border);
    border-radius: 999px;
    color: var(--text);
    padding: 8px 12px;
    text-align: left;
}

@media (max-width: 720px) {
    .quota-plans {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}

/* Final responsive guard: prevent horizontal overflow on web and Android WebView. */
html,
body {
    max-width: 100% !important;
    overflow-x: hidden !important;
    width: 100% !important;
}

body,
.app-shell,
.topbar,
.panel-grid,
.hero,
.chat,
.composer,
.quota-card,
.landing-shell,
.landing-card {
    max-width: 100% !important;
}

.app-shell {
    overflow-x: hidden !important;
    width: 100% !important;
}

.topbar,
.brand,
.brand-home,
.top-actions,
.composer,
.quota-card,
.quota-plans,
.bubble {
    min-width: 0 !important;
}

.topbar {
    width: 100% !important;
}

.top-actions {
    min-width: 0 !important;
}

.top-actions button,
.top-actions .nav-link {
    white-space: nowrap !important;
}

.composer {
    box-sizing: border-box !important;
}

.composer textarea {
    min-width: 0 !important;
    width: 100% !important;
}

@media (max-width: 720px) {
    .app-shell {
        padding-left: max(8px, env(safe-area-inset-left)) !important;
        padding-right: max(8px, env(safe-area-inset-right)) !important;
    }

    .topbar {
        align-items: center !important;
        display: grid !important;
        gap: 4px !important;
        grid-template-columns: auto minmax(0, 1fr) !important;
        padding: 6px 0 10px !important;
    }

    .brand {
        gap: 5px !important;
        max-width: 122px !important;
    }

    .brand-home {
        gap: 5px !important;
    }

    .hamburger {
        height: 30px !important;
        width: 30px !important;
    }

    .brand img {
        height: 28px !important;
        width: 28px !important;
    }

    .brand span {
        font-size: 0.9rem !important;
        max-width: 58px !important;
        overflow: hidden !important;
        text-overflow: clip !important;
        white-space: nowrap !important;
    }

    .top-actions {
        align-items: center !important;
        display: flex !important;
        flex-wrap: nowrap !important;
        gap: 3px !important;
        justify-content: flex-end !important;
        width: 100% !important;
    }

    .top-actions form {
        display: flex !important;
        flex: 0 0 auto !important;
        margin: 0 !important;
    }

    .top-actions button,
    .top-actions .nav-link {
        border-radius: 999px !important;
        flex: 0 0 auto !important;
        font-size: 0.7rem !important;
        line-height: 1 !important;
        min-height: 30px !important;
        padding: 6px 6px !important;
    }

    .user-pill {
        display: none !important;
    }

    .composer,
    .quota-card,
    .chat {
        width: 100% !important;
    }
}

@media (max-width: 390px) {
    .brand {
        max-width: 76px !important;
    }

    .brand span {
        display: inline !important;
    }

    .top-actions button,
    .top-actions .nav-link {
        font-size: 0.68rem !important;
        padding-left: 5px !important;
        padding-right: 5px !important;
    }
}

/* Header repair: keep the brand visible and avoid clipped hero text. */
.hero,
.hero h1,
.response-mode,
.response-mode span {
    overflow: visible !important;
}

.hero h1 {
    line-height: 1.12 !important;
    padding-bottom: 0.08em !important;
}

.response-mode {
    width: min(100%, 560px) !important;
}

.response-mode span {
    white-space: nowrap !important;
}

@media (max-width: 720px) {
    .topbar {
        align-items: stretch !important;
        display: grid !important;
        gap: 6px !important;
        grid-template-columns: 1fr !important;
    }

    .brand {
        max-width: none !important;
        width: 100% !important;
    }

    .brand-home {
        min-width: 0 !important;
    }

    .brand span {
        display: inline !important;
        font-size: 1rem !important;
        max-width: none !important;
        overflow: visible !important;
        text-overflow: clip !important;
        white-space: nowrap !important;
    }

    .top-actions {
        display: flex !important;
        flex-wrap: nowrap !important;
        gap: 5px !important;
        justify-content: flex-start !important;
        overflow: visible !important;
        width: 100% !important;
    }

    .top-actions button,
    .top-actions .nav-link {
        font-size: 0.76rem !important;
        padding: 7px 9px !important;
    }

    .hero {
        margin-top: 18px !important;
    }

    .hero h1 {
        font-size: clamp(1.8rem, 8.2vw, 2.45rem) !important;
        line-height: 1.14 !important;
    }

    .response-mode {
        grid-template-columns: repeat(2, minmax(0, 1fr)) !important;
        width: 100% !important;
    }

    .response-mode span {
        font-size: clamp(0.72rem, 3.1vw, 0.84rem) !important;
        min-height: 34px !important;
        padding: 7px 6px !important;
        white-space: nowrap !important;
    }
}

@media (max-width: 390px) {
    .brand {
        max-width: none !important;
    }

    .brand img {
        height: 30px !important;
        width: 30px !important;
    }

    .brand span {
        font-size: 0.95rem !important;
    }

    .top-actions button,
    .top-actions .nav-link {
        font-size: 0.7rem !important;
        padding: 6px 7px !important;
    }
}

/* Final header/hero correction requested after mobile review. */
.hero {
    padding-top: 10px !important;
}

.hero h1 {
    display: block !important;
    line-height: 1.22 !important;
    margin: 0 !important;
    min-height: auto !important;
    overflow: visible !important;
    padding: 0.08em 0 0.14em !important;
    transform: none !important;
}

@media (max-width: 720px) {
    .topbar {
        align-items: center !important;
        display: flex !important;
        flex-wrap: nowrap !important;
        gap: 6px !important;
        justify-content: space-between !important;
        padding: 8px 0 12px !important;
    }

    .brand {
        flex: 0 1 auto !important;
        gap: 5px !important;
        max-width: 44% !important;
        width: auto !important;
    }

    .brand-home {
        flex: 0 1 auto !important;
        gap: 5px !important;
    }

    .hamburger {
        flex: 0 0 30px !important;
        height: 30px !important;
        width: 30px !important;
    }

    .brand img {
        flex: 0 0 30px !important;
        height: 30px !important;
        width: 30px !important;
    }

    .brand span {
        display: inline !important;
        flex: 0 1 auto !important;
        font-size: 0.98rem !important;
        max-width: 96px !important;
        overflow: hidden !important;
        text-overflow: clip !important;
        white-space: nowrap !important;
    }

    .top-actions {
        align-items: center !important;
        display: flex !important;
        flex: 1 1 auto !important;
        flex-wrap: nowrap !important;
        gap: 4px !important;
        justify-content: flex-end !important;
        overflow: visible !important;
        width: auto !important;
    }

    .top-actions form {
        flex: 0 0 auto !important;
    }

    .top-actions button,
    .top-actions .nav-link {
        flex: 0 0 auto !important;
        font-size: 0.8rem !important;
        min-height: 32px !important;
        padding: 7px 8px !important;
    }

    .hero {
        margin-top: 24px !important;
        padding-top: 8px !important;
    }

    .hero h1 {
        font-size: clamp(1.85rem, 8vw, 2.45rem) !important;
        line-height: 1.24 !important;
        padding-top: 0.1em !important;
        padding-bottom: 0.16em !important;
    }
}

@media (max-width: 390px) {
    .brand {
        max-width: 48% !important;
    }

    .brand span {
        font-size: 0.92rem !important;
        max-width: none !important;
        overflow: visible !important;
        text-overflow: clip !important;
    }

    .top-actions button,
    .top-actions .nav-link {
        font-size: 0.74rem !important;
        padding-left: 6px !important;
        padding-right: 6px !important;
    }
}

/* Prefer preserving the full brand text over showing every logo detail. */
@media (max-width: 360px) {
    .brand {
        max-width: 44% !important;
    }

    .brand img {
        display: none !important;
    }

    .brand span {
        display: inline !important;
        max-width: none !important;
        overflow: visible !important;
        white-space: nowrap !important;
    }

    .top-actions button,
    .top-actions .nav-link {
        font-size: 0.7rem !important;
        padding-left: 5px !important;
        padding-right: 5px !important;
    }
}

/* User questions follow the same left-to-right reading flow requested for the app. */
.message.user {
    align-items: flex-start !important;
    justify-content: flex-start !important;
}

.message.user .bubble {
    margin-left: 0 !important;
    margin-right: auto !important;
}

.landing-body {
    background: var(--bg) !important;
    min-height: 100vh;
}

.landing-shell {
    align-items: center;
    display: flex;
    flex-direction: column;
    justify-content: center;
    margin: 0 auto;
    min-height: 100vh;
    padding: 42px 20px;
    text-align: center;
}

.landing-logo {
    border-radius: 28px;
    height: 150px;
    margin-bottom: 26px;
    object-fit: contain;
    width: 150px;
}

.landing-card {
    background: #fff;
    border: 1px solid #d2e3fc;
    border-radius: 34px;
    box-shadow: 0 18px 50px rgba(26, 115, 232, 0.15);
    display: grid;
    gap: 18px;
    max-width: 720px;
    padding: 34px;
}

.landing-card h1 {
    color: #1418fc;
    font-size: clamp(2.1rem, 7vw, 4rem);
    letter-spacing: -0.06em;
    line-height: 1;
    margin: 0;
}

.landing-card p:not(.eyebrow) {
    color: var(--muted);
    font-size: 1.08rem;
    margin: 0 auto;
    max-width: 560px;
}

.landing-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    justify-content: center;
}

.landing-button {
    background: var(--primary-soft);
    border-radius: 999px;
    color: #174ea6;
    font-weight: 600;
    padding: 12px 18px;
    text-decoration: none;
}

.landing-button.primary {
    background: var(--primary);
    color: #fff;
}

.landing-card small {
    color: var(--muted);
}

button,
input,
select,
textarea {
    font: inherit;
}

button {
    cursor: pointer;
}

.app-shell {
    margin: 0 auto;
    max-width: 980px;
    min-height: 100vh;
    padding: 18px 22px 118px;
}

.topbar {
    align-items: center;
    background: rgba(255, 255, 255, 0.86);
    backdrop-filter: blur(18px);
    border-bottom: 1px solid var(--border);
    display: flex;
    justify-content: space-between;
    padding: 10px 0 16px;
    position: sticky;
    top: 0;
    z-index: 20;
}

.brand {
    align-items: center;
    display: flex;
    gap: 12px;
}

.brand-link,
.nav-link {
    color: inherit;
    text-decoration: none;
}

.brand img {
    border-radius: 12px;
    height: 34px;
    object-fit: contain;
    width: 34px;
}

.brand span {
    color: #1418fc;
    font-size: 1.05rem;
    font-weight: 500;
}

.hamburger {
    align-items: center;
    background: transparent;
    border: 0;
    border-radius: 999px;
    display: inline-flex;
    flex-direction: column;
    gap: 4px;
    height: 38px;
    justify-content: center;
    width: 38px;
}

.hamburger:hover {
    background: var(--surface-strong);
}

.hamburger span {
    background: var(--muted);
    border-radius: 999px;
    display: block;
    height: 2px;
    width: 18px;
}

.top-actions {
    align-items: center;
    display: flex;
    gap: 8px;
}

.top-actions button,
.top-actions .nav-link,
.composer button,
.floating-panel button,
.new-chat,
.pricing-card button {
    background: var(--primary-soft);
    border: 1px solid transparent;
    border-radius: 999px;
    color: #174ea6;
    display: inline-flex;
    padding: 9px 16px;
    text-decoration: none;
}

.top-actions button:hover,
.top-actions .nav-link:hover,
.composer button:hover,
.floating-panel button:hover,
.new-chat:hover,
.pricing-card button:hover {
    background: #d2e3fc;
}

.subscribe-link {
    background: #e6f4ea;
    color: #137333;
}

.user-pill {
    background: var(--surface-strong);
    border-radius: 999px;
    color: var(--muted);
    font-size: 0.9rem;
    padding: 8px 12px;
}

.sidebar {
    background: #fff;
    border-right: 1px solid var(--border);
    bottom: 0;
    box-shadow: var(--shadow);
    left: 0;
    max-width: 88vw;
    overflow-y: auto;
    padding: 28px 20px;
    position: fixed;
    top: 0;
    transform: translateX(-105%);
    transition: transform 180ms ease;
    width: 340px;
    z-index: 50;
}

.sidebar.open {
    transform: translateX(0);
}

.overlay {
    background: rgba(32, 33, 36, 0.26);
    inset: 0;
    opacity: 0;
    pointer-events: none;
    position: fixed;
    transition: opacity 180ms ease;
    z-index: 40;
}

.overlay.open {
    opacity: 1;
    pointer-events: auto;
}

.sidebar-header {
    border-bottom: 1px solid var(--border);
    display: grid;
    gap: 4px;
    margin-bottom: 18px;
    padding-bottom: 18px;
}

.sidebar-header span {
    color: var(--muted);
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 0.12em;
    text-transform: uppercase;
}

.sidebar-header strong {
    font-size: 1.35rem;
}

.new-chat {
    margin-bottom: 14px;
    width: 100%;
}

.conversation-link {
    align-items: center;
    border-radius: 16px;
    color: var(--text);
    display: flex;
    gap: 10px;
    margin-bottom: 8px;
    padding: 11px 12px;
    text-decoration: none;
}

.conversation-link:hover,
.conversation-link.active {
    background: var(--surface-strong);
}

.muted,
.login-hint {
    color: var(--muted);
}

.flash-list {
    display: grid;
    gap: 8px;
    margin: 18px 0;
}

.flash {
    border-radius: 16px;
    padding: 12px 14px;
}

.flash.success {
    background: #e6f4ea;
    color: #137333;
}

.flash.error {
    background: #fce8e6;
    color: #a50e0e;
}

.panel-grid {
    display: grid;
    gap: 14px;
    margin-top: 20px;
}

.floating-panel {
    background: #fff;
    border: 1px solid var(--border);
    border-radius: 26px;
    box-shadow: 0 8px 28px rgba(60, 64, 67, 0.08);
    display: none;
    gap: 10px;
    margin: 0 auto;
    max-width: 560px;
    padding: 22px;
    width: 100%;
}

.floating-panel.open {
    display: grid;
}

.floating-panel h2 {
    margin: 0 0 8px;
}

.floating-panel input,
.floating-panel textarea,
.composer select,
.composer textarea {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 16px;
    color: var(--text);
    outline: none;
    padding: 12px 14px;
}

.floating-panel textarea {
    min-height: 110px;
    resize: vertical;
}

.hero {
    margin: 92px auto 28px;
    max-width: 760px;
}

.hero.compact {
    margin-top: 28px;
}

.hero h1 {
    color: #1418fc;
    font-size: clamp(1.1rem, 3.5vw, 2.4rem);
    font-weight: 500;
    letter-spacing: -0.05em;
    line-height: 1;
    margin: 0;
}

.hero p {
    color: #6b6eff;
    font-size: 1.1rem;
}

.chat {
    display: grid;
    gap: 18px;
    margin: 0 auto 24px;
    max-width: 820px;
}

.message {
    display: flex;
}

.message.user {
    justify-content: flex-end;
}

.bubble {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 24px;
    line-height: 1.55;
    max-width: 82%;
    padding: 14px 18px;
    white-space: pre-wrap;
}

.bubble.typing::after {
    animation: blink 1s steps(2, start) infinite;
    content: "▌";
    margin-left: 2px;
}

@keyframes blink {
    50% {
        opacity: 0;
    }
}

.message.user .bubble {
    background: var(--primary-soft);
    border-color: #d2e3fc;
}

.composer {
    align-items: center;
    background: #fff;
    border: 1px solid var(--border);
    border-radius: 32px;
    bottom: 18px;
    box-shadow: var(--shadow);
    display: grid;
    gap: 10px;
    grid-template-columns: 1fr auto auto;
    left: 50%;
    max-width: 900px;
    padding: 10px;
    position: fixed;
    transform: translateX(-50%);
    width: calc(100% - 36px);
    z-index: 30;
}

.composer textarea {
    max-height: 160px;
    resize: none;
}

.login-hint {
    text-align: center;
}

.pricing-hero {
    margin: 84px auto 34px;
    max-width: 760px;
    text-align: center;
}

.eyebrow {
    color: var(--primary);
    font-size: 0.78rem;
    font-weight: 700;
    letter-spacing: 0.12em;
    margin: 0 0 10px;
    text-transform: uppercase;
}

.pricing-hero h1 {
    font-size: clamp(2.3rem, 6vw, 4.6rem);
    font-weight: 500;
    letter-spacing: -0.05em;
    line-height: 1;
    margin: 0;
}

.pricing-hero p:not(.eyebrow),
.pricing-note {
    color: var(--muted);
}

.pricing-grid {
    display: grid;
    gap: 20px;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    margin: 0 auto;
    max-width: 860px;
}

.pricing-card {
    background: #fff;
    border: 1px solid var(--border);
    border-radius: 30px;
    box-shadow: 0 12px 36px rgba(60, 64, 67, 0.08);
    display: grid;
    gap: 18px;
    padding: 28px;
    position: relative;
}

.pricing-card.featured {
    border-color: #d2e3fc;
    box-shadow: 0 18px 52px rgba(26, 115, 232, 0.16);
}

.badge {
    background: var(--primary);
    border-radius: 999px;
    color: #fff;
    font-size: 0.78rem;
    font-weight: 700;
    padding: 7px 12px;
    position: absolute;
    right: 22px;
    top: 22px;
}

.pricing-card h2 {
    margin: 0;
}

.price {
    display: grid;
    gap: 4px;
}

.price strong {
    font-size: 2.4rem;
    letter-spacing: -0.04em;
}

.price span {
    color: var(--muted);
}

.pricing-card ul {
    color: var(--muted);
    display: grid;
    gap: 10px;
    margin: 0;
    padding-left: 20px;
}

.pricing-card form,
.pricing-card button {
    width: 100%;
}

.pricing-card button {
    justify-content: center;
}

.pricing-note {
    margin: 28px auto;
    max-width: 680px;
    text-align: center;
}

@media (max-width: 720px) {
    .app-shell {
        padding: 10px 12px 150px;
    }

    .topbar {
        align-items: center;
        gap: 8px;
        padding: 8px 0 10px;
        top: max(8px, env(safe-area-inset-top));
    }

    .brand {
        min-width: 0;
    }

    .brand img {
        height: 38px;
        width: 38px;
    }

    .brand span {
        font-size: 1.08rem;
        white-space: nowrap;
    }

    .top-actions {
        align-items: center;
        display: grid;
        flex: 1;
        gap: 6px;
        grid-template-columns: repeat(3, minmax(0, auto));
        justify-content: end;
    }

    .top-actions button,
    .top-actions .nav-link {
        font-size: 0.82rem;
        padding: 7px 9px;
    }

    .user-pill {
        display: none;
    }

    .composer {
        border-radius: 24px;
        grid-template-columns: 1fr auto;
        padding: 8px;
    }

    .composer textarea {
        grid-column: 1 / -1;
        min-height: 58px;
    }

    .language-chip,
    .composer button[type="submit"] {
        justify-content: center;
        padding: 9px 10px;
    }

    .hero {
        margin: 28px auto 16px;
    }

    .hero h1 {
        font-size: clamp(1.65rem, 9vw, 2.25rem);
    }

    .response-mode {
        gap: 6px;
    }

    .response-mode label {
        font-size: 0.86rem;
        padding: 7px 9px;
    }

    .bubble {
        max-width: 100%;
    }

    .quota-card {
        margin-bottom: 12px;
    }

    .quota-plans {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .language-options {
        grid-template-columns: 1fr;
    }

    .pricing-grid {
        grid-template-columns: 1fr;
    }
}

/* Restored polished app layout */
:root {
    --bg: #f7faff;
    --surface: #f8fbff;
    --surface-strong: #eef5ff;
    --text: #172033;
    --muted: #65738a;
    --border: #dce8f8;
    --primary: #1a73e8;
    --primary-strong: #134fc2;
    --primary-soft: #e8f2ff;
    --gold: #b8860b;
    --shadow: 0 22px 60px rgba(34, 66, 112, 0.14);
}

html {
    min-height: 100%;
}

body {
    background:
        radial-gradient(circle at 20% 4%, rgba(232, 242, 255, 0.95), transparent 32rem),
        radial-gradient(circle at 88% 18%, rgba(255, 247, 219, 0.72), transparent 24rem),
        linear-gradient(180deg, #ffffff 0%, #f5f9ff 52%, #eef5ff 100%);
    min-height: 100%;
    overflow-x: hidden;
}

.app-shell {
    max-width: 1120px;
    padding: 18px 24px 190px;
}

.topbar {
    background: rgba(255, 255, 255, 0.78);
    border: 1px solid rgba(220, 232, 248, 0.9);
    border-radius: 28px;
    box-shadow: 0 12px 36px rgba(34, 66, 112, 0.08);
    gap: 18px;
    margin: 0 auto 10px;
    padding: 10px 14px;
}

.brand {
    min-width: 0;
}

.brand-home {
    gap: 10px;
}

.brand img {
    border-radius: 16px;
    box-shadow: 0 10px 28px rgba(184, 134, 11, 0.18);
    height: 48px;
    width: 48px;
}

.brand span {
    color: #1424d8;
    font-size: 1.55rem;
    font-weight: 650;
    letter-spacing: -0.04em;
    white-space: nowrap;
}

.hamburger {
    background: rgba(248, 251, 255, 0.9);
    border: 1px solid var(--border);
    box-shadow: 0 6px 18px rgba(34, 66, 112, 0.08);
}

.top-actions {
    flex-wrap: wrap;
    justify-content: flex-end;
}

.top-actions button,
.top-actions .nav-link,
.composer button,
.floating-panel button,
.new-chat,
.pricing-card button,
.quota-card button,
.quota-card a {
    align-items: center;
    background: rgba(232, 242, 255, 0.95);
    border: 1px solid rgba(204, 222, 247, 0.9);
    border-radius: 999px;
    box-shadow: 0 6px 18px rgba(34, 66, 112, 0.06);
    color: #174ea6;
    font-weight: 650;
    justify-content: center;
    line-height: 1;
    min-height: 40px;
    padding: 10px 16px;
    text-decoration: none;
}

.subscribe-link,
.quota-card a {
    background: linear-gradient(135deg, #e9f7ef, #d9f2e2) !important;
    color: #137333 !important;
}

.user-pill {
    max-width: 230px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.sidebar {
    border-radius: 0 28px 28px 0;
}

.history-search,
.floating-panel input,
.floating-panel select,
.floating-panel textarea {
    background: #f8fbff;
    border: 1px solid var(--border);
    border-radius: 18px;
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.8);
}

.conversation-link,
.favorite-item,
.support-ticket-card {
    transition: background 160ms ease, border-color 160ms ease, transform 160ms ease;
}

.conversation-link:hover,
.favorite-item:hover,
.support-ticket-card:hover {
    transform: translateY(-1px);
}

.panel-grid {
    margin-top: 0;
}

.floating-panel {
    backdrop-filter: blur(18px);
    background: rgba(255, 255, 255, 0.94);
    border: 1px solid rgba(220, 232, 248, 0.95);
    border-radius: 28px;
    box-shadow: var(--shadow);
}

.floating-panel.open {
    display: grid;
    left: 50%;
    max-height: min(76vh, 720px);
    overflow-y: auto;
    position: fixed;
    top: 94px;
    transform: translateX(-50%);
    z-index: 45;
}

.support-panel.open {
    max-width: min(720px, calc(100vw - 28px));
}

.hero {
    margin: 64px auto 18px;
    max-width: 820px;
    text-align: center;
}

.initial-view .hero {
    margin-top: clamp(42px, 9vh, 92px);
}

.hero h1 {
    color: #1220c8;
    font-size: clamp(2.25rem, 7vw, 4.25rem);
    font-weight: 680;
    letter-spacing: -0.07em;
}

.hero p {
    color: #5468ff;
    font-size: clamp(1rem, 2vw, 1.25rem);
    margin: 12px auto 0;
}

.response-mode {
    justify-content: center;
    margin-top: 16px;
}

.response-mode label {
    background: rgba(255, 255, 255, 0.92);
    border-color: rgba(210, 227, 252, 0.95);
    box-shadow: 0 8px 22px rgba(34, 66, 112, 0.06);
    color: #526175;
    font-weight: 650;
}

.response-mode label:has(input:checked) {
    background: linear-gradient(135deg, #e8f2ff, #dceaff);
    border-color: #bcd5fb;
    color: #174ea6;
}

.chat {
    max-width: 880px;
}

.message {
    align-items: flex-start;
    flex-direction: column;
}

.message.user {
    align-items: flex-end;
}

.bubble {
    background: rgba(255, 255, 255, 0.92);
    border: 1px solid rgba(220, 232, 248, 0.95);
    border-radius: 26px;
    box-shadow: 0 10px 30px rgba(34, 66, 112, 0.07);
    color: #263447;
    max-width: min(82%, 760px);
}

.message.user .bubble {
    background: linear-gradient(135deg, #e8f2ff, #dceaff);
    border-color: #c9ddfb;
}

.composer {
    background: rgba(255, 255, 255, 0.9);
    border: 1px solid rgba(197, 217, 245, 0.95);
    border-radius: 30px;
    bottom: calc(20px + env(safe-area-inset-bottom));
    box-shadow: 0 24px 70px rgba(34, 66, 112, 0.2);
    max-width: 920px;
    padding: 12px;
}

.composer textarea {
    background: #eef7ff;
    border: 1px solid #cfe2f8;
    border-radius: 22px;
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.9);
    min-height: 64px;
    padding: 16px 18px;
}

.composer textarea:focus {
    border-color: #7fb0f3;
    box-shadow: 0 0 0 4px rgba(26, 115, 232, 0.1);
}

.language-chip {
    background: #f7fbff !important;
    color: #174ea6 !important;
}

.quota-card {
    background: rgba(255, 255, 255, 0.82);
    border: 1px solid rgba(210, 227, 252, 0.96);
    border-radius: 24px;
    box-shadow: 0 14px 42px rgba(34, 66, 112, 0.08);
    max-width: 920px;
}

.quota-card strong {
    color: #174ea6;
}

.quota-card p {
    color: var(--muted);
    margin: 4px 0 0;
}

.quota-plans span {
    background: linear-gradient(135deg, #eef7ff, #e3efff);
    border: 1px solid #d2e3fc;
    font-weight: 650;
}

.login-hint {
    margin-top: 12px;
}

.language-dialog-card {
    background: rgba(255, 255, 255, 0.96);
    border-radius: 30px;
}

@media (max-width: 720px) {
    .app-shell {
        padding: calc(12px + env(safe-area-inset-top)) 12px 170px;
    }

    .topbar {
        border-radius: 22px;
        gap: 8px;
        padding: 8px;
    }

    .brand-home {
        gap: 7px;
    }

    .brand img {
        height: 40px;
        width: 40px;
    }

    .brand span {
        font-size: 1.2rem;
    }

    .hamburger {
        height: 36px;
        width: 36px;
    }

    .top-actions {
        align-items: center;
        display: flex;
        flex: 1 1 auto;
        gap: 5px;
        justify-content: flex-end;
    }

    .top-actions button,
    .top-actions .nav-link {
        font-size: 0.78rem;
        min-height: 34px;
        padding: 7px 8px;
    }

    .floating-panel.open {
        max-width: calc(100vw - 24px);
        top: calc(74px + env(safe-area-inset-top));
    }

    .hero,
    .initial-view .hero {
        margin: 28px auto 14px;
    }

    .hero h1 {
        font-size: clamp(1.9rem, 10vw, 2.65rem);
    }

    .hero p {
        font-size: 0.96rem;
    }

    .response-mode {
        margin-top: 12px;
    }

    .response-mode label {
        font-size: 0.82rem;
        padding: 7px 9px;
    }

    .composer {
        border-radius: 24px;
        bottom: calc(10px + env(safe-area-inset-bottom));
        grid-template-columns: 1fr auto;
        padding: 8px;
        width: calc(100% - 18px);
    }

    .composer textarea {
        grid-column: 1 / -1;
        min-height: 74px;
        padding: 13px 14px;
    }

    .composer button {
        min-height: 38px;
    }

    .quota-card {
        border-radius: 20px;
        padding: 10px;
    }

    .quota-plans {
        gap: 6px;
    }

    .quota-plans span {
        font-size: 0.72rem;
        padding: 6px;
    }
}

@media (max-width: 420px) {
    .brand span {
        font-size: 1.08rem;
    }

    .topbar {
        align-items: center;
    }

    .top-actions button,
    .top-actions .nav-link {
        font-size: 0.74rem;
        padding: 7px 7px;
    }
}

/* Historical layout restoration: light-blue page, white central question card. */
:root {
    --bg: #eef6ff;
    --surface: #f8fafd;
    --surface-strong: #e8f0fe;
    --text: #1f1f1f;
    --muted: #5f6368;
    --border: #d7e5fb;
    --primary: #1a73e8;
    --primary-soft: #e8f0fe;
    --shadow: 0 18px 50px rgba(26, 115, 232, 0.14);
}

html,
body {
    min-height: 100%;
}

body {
    background: var(--bg) !important;
    color: var(--text);
    overflow-x: hidden;
}

.app-shell {
    margin: 0 auto;
    max-width: 980px;
    min-height: 100vh;
    padding: 18px 22px 52px;
}

.topbar {
    align-items: center;
    background: rgba(238, 246, 255, 0.9) !important;
    border: 0 !important;
    border-bottom: 1px solid var(--border) !important;
    border-radius: 0 !important;
    box-shadow: none !important;
    display: flex;
    gap: 14px;
    justify-content: space-between;
    margin: 0 !important;
    padding: 10px 0 16px !important;
    position: sticky;
    top: 0;
    z-index: 20;
}

.brand,
.brand-home {
    align-items: center;
    display: flex;
    gap: 12px;
    min-width: 0;
}

.brand img {
    border-radius: 12px !important;
    box-shadow: none !important;
    height: 40px !important;
    object-fit: contain;
    width: 40px !important;
}

.brand span {
    color: #1418fc;
    font-size: 1.25rem !important;
    font-weight: 600;
    letter-spacing: -0.04em;
    white-space: nowrap;
}

.top-actions {
    align-items: center;
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    justify-content: flex-end;
}

.top-actions button,
.top-actions .nav-link,
.floating-panel button,
.new-chat,
.quota-card button,
.quota-card a {
    background: var(--primary-soft) !important;
    border: 1px solid transparent !important;
    border-radius: 999px;
    box-shadow: none !important;
    color: #174ea6 !important;
    display: inline-flex;
    font-weight: 500;
    min-height: 0;
    padding: 9px 16px;
    text-decoration: none;
}

.subscribe-link,
.quota-card a {
    background: #e6f4ea !important;
    color: #137333 !important;
}

.floating-panel.open {
    display: grid;
    left: auto !important;
    max-height: none !important;
    overflow-y: visible !important;
    position: static !important;
    top: auto !important;
    transform: none !important;
    z-index: auto !important;
}

.hero {
    margin: 42px auto 14px !important;
    max-width: 760px;
    text-align: center;
}

.hero.compact {
    margin-top: 22px !important;
}

.hero h1 {
    color: #1418fc;
    font-size: clamp(2rem, 6vw, 3.6rem) !important;
    font-weight: 500;
    letter-spacing: -0.05em;
    line-height: 1;
    margin: 0;
}

.hero p {
    color: #6b6eff;
    font-size: 1.1rem;
    margin: 12px 0 0;
}

.hero .response-mode {
    margin: 18px auto 0;
    width: min(100%, 460px);
}

.response-mode {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 18px;
    display: inline-grid;
    gap: 4px;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    padding: 4px;
}

.response-mode label {
    background: transparent !important;
    border: 0 !important;
    box-shadow: none !important;
    cursor: pointer;
    padding: 0 !important;
}

.response-mode input {
    opacity: 0;
    position: absolute;
}

.response-mode span {
    align-items: center;
    border-radius: 14px;
    color: var(--muted);
    display: flex;
    font-size: 0.84rem;
    justify-content: center;
    min-height: 38px;
    padding: 8px 10px;
}

.response-mode input:checked + span {
    background: #fff;
    box-shadow: 0 4px 14px rgba(60, 64, 67, 0.12);
    color: #174ea6;
}

.chat {
    display: grid;
    gap: 18px;
    margin: 28px auto 24px !important;
    max-width: 820px;
}

.message {
    display: flex;
}

.message.assistant {
    align-items: flex-start;
    flex-direction: column;
}

.message.user {
    align-items: flex-end;
    justify-content: flex-end;
}

.bubble {
    background: var(--surface) !important;
    border: 1px solid var(--border) !important;
    border-radius: 24px;
    box-shadow: none !important;
    line-height: 1.55;
    max-width: 82%;
    padding: 14px 18px;
    white-space: pre-wrap;
}

.message.user .bubble {
    background: var(--primary-soft) !important;
    border-color: #d2e3fc !important;
}

.composer {
    align-items: stretch !important;
    background: #fff !important;
    border: 1px solid #d2e3fc !important;
    border-radius: 34px !important;
    bottom: auto !important;
    box-shadow: 0 18px 50px rgba(26, 115, 232, 0.15) !important;
    display: grid;
    gap: 10px;
    grid-template-columns: minmax(0, 1fr) auto auto !important;
    left: auto !important;
    margin: 16px auto 8px !important;
    max-width: 820px !important;
    padding: 14px !important;
    position: static !important;
    transform: none !important;
    width: min(100%, 820px) !important;
    z-index: auto !important;
}

.composer textarea {
    background: #fff !important;
    border: 1px solid #c9ddff !important;
    border-radius: 16px;
    color: var(--text);
    grid-column: 1 / -1;
    max-height: 220px;
    min-height: clamp(128px, 22vh, 210px) !important;
    outline: none;
    padding: 12px 14px;
    resize: none;
}

.composer button {
    align-items: center;
    background: var(--primary-soft) !important;
    border: 1px solid transparent !important;
    border-radius: 999px;
    box-shadow: none !important;
    color: #174ea6 !important;
    display: inline-flex;
    justify-content: center;
    padding: 9px 16px;
}

.language-chip {
    justify-content: center;
    white-space: nowrap;
}

.quota-card {
    background: rgba(255, 255, 255, 0.78) !important;
    border: 1px solid #d2e3fc !important;
    border-radius: 18px !important;
    box-shadow: none !important;
    margin: 16px auto 0;
    max-width: 820px;
    padding: 12px;
}

.quota-plans span {
    background: #e8f0fe !important;
    border: 0 !important;
    color: #174ea6;
    font-weight: 500;
}

.message-actions button {
    align-items: center;
    background: rgba(255, 255, 255, 0.85) !important;
    border: 1px solid var(--border) !important;
    border-radius: 999px;
    box-shadow: none !important;
    color: var(--muted) !important;
    display: inline-flex;
    font-size: 1rem;
    height: 34px;
    justify-content: center;
    padding: 0;
    width: 34px;
}

@media (max-width: 720px) {
    .app-shell {
        padding: calc(18px + env(safe-area-inset-top)) 14px 42px !important;
    }

    .topbar {
        gap: 8px;
        padding: 6px 0 12px !important;
        top: max(8px, env(safe-area-inset-top));
    }

    .brand img {
        height: 34px !important;
        width: 34px !important;
    }

    .brand span {
        font-size: 1rem !important;
    }

    .top-actions {
        flex: 1;
        gap: 5px;
        justify-content: flex-end;
    }

    .top-actions button,
    .top-actions .nav-link {
        font-size: 0.82rem;
        padding: 7px 9px;
    }

    .hero {
        margin: 24px auto 14px !important;
    }

    .hero h1 {
        font-size: clamp(1.7rem, 9vw, 2.5rem) !important;
    }

    .response-mode {
        width: 100%;
    }

    .response-mode span {
        min-height: 36px;
        white-space: normal;
    }

    .composer {
        border-radius: 24px !important;
        grid-template-columns: minmax(0, 1fr) auto !important;
        padding: 8px !important;
        width: 100% !important;
    }

    .composer textarea {
        grid-column: 1 / -1;
        min-height: min(34vh, 220px) !important;
        width: 100%;
    }

    .bubble {
        max-width: 100%;
        overflow-wrap: anywhere;
    }

    .quota-plans {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}