:root {
    color-scheme: dark;
    --page: #151810;
    --panel: #1a1e15;
    --panel-deep: #10130d;
    --panel-raised: #20251a;
    --lime: #d5ff36;
    --lime-strong: #c9f21f;
    --lime-wash: rgba(213, 255, 54, 0.11);
    --ink: #f3f1e9;
    --ink-soft: #b8b9ad;
    --ink-muted: #7f8277;
    --line: rgba(243, 241, 233, 0.16);
    --line-strong: rgba(243, 241, 233, 0.34);
    --danger: #ff766f;
    --danger-wash: rgba(255, 118, 111, 0.12);
    --sidebar-width: 256px;
    --context-width: 354px;
    --header-height: 72px;
    --ease: cubic-bezier(0.16, 1, 0.3, 1);
    --motion: 220ms var(--ease);
    --font-sans: "Space Grotesk", "HarmonyOS Sans SC", "MiSans", "PingFang SC", "Microsoft YaHei", sans-serif;
    --font-display: "Playfair Display", "Songti SC", "STSong", Georgia, serif;
    --font-mono: "DM Mono", "Cascadia Code", "JetBrains Mono", Consolas, monospace;
    font-family: var(--font-sans);
}

* {
    box-sizing: border-box;
}

html {
    min-width: 320px;
    background: var(--page);
}

body {
    margin: 0;
    min-height: 100dvh;
    overflow: hidden;
    background: var(--page);
    color: var(--ink);
    font-size: 14px;
    line-height: 1.55;
    text-rendering: optimizeLegibility;
    -webkit-font-smoothing: antialiased;
}

body::before {
    position: fixed;
    inset: 0;
    z-index: -1;
    opacity: 0.24;
    background-image: url("data:image/svg+xml,%3Csvg width='420' height='280' viewBox='0 0 420 280' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' stroke='%23f3f1e9' stroke-opacity='.14' stroke-width='.7'%3E%3Cpath d='M-28 67C39 13 105 19 137 62s101 52 149 18 110-35 157 2'/%3E%3Cpath d='M-35 84C36 27 99 32 126 72s96 60 151 24 122-42 174 5'/%3E%3Cpath d='M-44 103C32 44 91 47 116 86s92 66 151 29 130-50 188 5'/%3E%3Cpath d='M-18 216c54-62 119-79 169-48s105 24 141-15 96-62 155-36'/%3E%3Cpath d='M-11 234c49-57 111-73 160-43s108 29 150-11 96-55 143-33'/%3E%3Cpath d='M8 253c43-51 98-65 144-39s105 31 151-5 88-45 128-28'/%3E%3C/g%3E%3C/svg%3E");
    background-size: 420px 280px;
    content: "";
    pointer-events: none;
}

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

button,
select {
    color: inherit;
}

button {
    -webkit-tap-highlight-color: transparent;
}

button:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible,
a:focus-visible {
    outline: 2px solid var(--lime);
    outline-offset: 3px;
}

[hidden] {
    display: none !important;
}

.skip-link {
    position: fixed;
    top: 12px;
    left: 12px;
    z-index: 100;
    transform: translateY(-160%);
    padding: 9px 13px;
    background: var(--lime);
    color: #10130d;
    font-weight: 700;
    text-decoration: none;
    transition: transform var(--motion);
}

.skip-link:focus {
    transform: translateY(0);
}

.app-shell {
    display: grid;
    grid-template-columns: var(--sidebar-width) minmax(0, 1fr) var(--context-width);
    width: 100%;
    height: 100dvh;
    min-height: 100dvh;
    overflow: hidden;
    background: rgba(21, 24, 16, 0.94);
    transition: grid-template-columns var(--motion);
}

.app-shell.context-closed {
    grid-template-columns: var(--sidebar-width) minmax(0, 1fr) 0;
}

.conversation-sidebar,
.context-panel,
.workspace {
    min-width: 0;
    min-height: 0;
}

/* Navigation */
.conversation-sidebar {
    position: relative;
    z-index: 10;
    display: flex;
    flex-direction: column;
    padding: 20px 18px 16px;
    overflow: hidden;
    border-right: 1px solid var(--line);
    background: rgba(16, 19, 13, 0.9);
}

.conversation-sidebar::after {
    position: absolute;
    right: -1px;
    bottom: 0;
    width: 1px;
    height: 28%;
    background: var(--lime);
    content: "";
}

.brand-block {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    min-height: 58px;
}

.brand-lockup {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    color: var(--ink);
    text-decoration: none;
}

.brand-cn {
    padding-top: 1px;
    font-family: var(--font-display);
    font-size: 32px;
    font-style: italic;
    font-weight: 600;
    letter-spacing: -0.09em;
    line-height: 0.95;
}

.brand-en {
    padding-left: 10px;
    border-left: 1px solid var(--lime);
    color: var(--lime);
    font-family: var(--font-mono);
    font-size: 9px;
    font-weight: 500;
    letter-spacing: 0.12em;
    line-height: 1.08;
}

.sidebar-manifesto {
    margin: 22px 0 24px;
    color: var(--ink-soft);
    font-size: 12px;
    line-height: 1.65;
}

.new-session-button {
    display: grid;
    grid-template-columns: auto minmax(0, 1fr) auto;
    align-items: center;
    gap: 10px;
    width: 100%;
    min-height: 48px;
    padding: 0 13px;
    border: 1px solid var(--lime);
    border-radius: 0;
    background: var(--lime);
    color: #11140e;
    cursor: pointer;
    font-size: 12px;
    font-weight: 700;
    text-align: left;
    transition: background var(--motion), color var(--motion), transform var(--motion);
}

.new-session-button:hover {
    background: transparent;
    color: var(--lime);
}

.new-session-button > span:first-child {
    font-size: 18px;
    line-height: 1;
}

kbd {
    border: 0;
    color: currentColor;
    font-family: var(--font-mono);
    font-size: 8px;
    font-weight: 500;
    opacity: 0.68;
}

.sidebar-section-heading {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-top: 30px;
    padding: 0 2px 10px;
    border-bottom: 1px solid var(--line-strong);
    color: var(--ink-muted);
    font-family: var(--font-mono);
    font-size: 9px;
    letter-spacing: 0.12em;
}

.count-label {
    color: var(--lime);
    font-variant-numeric: tabular-nums;
}

.conversation-list {
    flex: 1;
    min-height: 0;
    margin: 7px -5px 0;
    padding: 0 5px;
    overflow-y: auto;
}

.conversation-item {
    position: relative;
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
    gap: 2px 10px;
    width: 100%;
    margin: 0;
    padding: 12px 7px 12px 12px;
    border: 0;
    border-bottom: 1px solid var(--line);
    border-radius: 0;
    background: transparent;
    color: var(--ink-soft);
    cursor: pointer;
    text-align: left;
    transition: color var(--motion), background var(--motion), padding var(--motion);
}

.conversation-item::before {
    position: absolute;
    top: 50%;
    left: 0;
    width: 4px;
    height: 4px;
    transform: translateY(-50%);
    background: var(--line-strong);
    content: "";
    transition: height var(--motion), background var(--motion);
}

.conversation-item:hover {
    padding-left: 16px;
    background: rgba(243, 241, 233, 0.035);
    color: var(--ink);
}

.conversation-item.active {
    background: var(--lime-wash);
    color: var(--ink);
}

.conversation-item.active::before {
    height: calc(100% - 14px);
    background: var(--lime);
}

.conversation-item strong {
    min-width: 0;
    overflow: hidden;
    font-size: 11px;
    font-weight: 600;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.conversation-item small {
    color: var(--ink-muted);
    font-family: var(--font-mono);
    font-size: 8px;
}

.conversation-item .message-count {
    grid-row: 1 / 3;
    grid-column: 2;
    align-self: center;
    color: var(--ink-muted);
    font-family: var(--font-mono);
    font-size: 8px;
}

.conversation-list-empty {
    margin: 12px 4px;
    padding: 14px 10px;
    border-left: 1px solid var(--line-strong);
    color: var(--ink-muted);
    font-size: 10px;
}

.sidebar-footer {
    display: grid;
    margin-top: 14px;
    border-top: 1px solid var(--line-strong);
}

.sidebar-action {
    display: grid;
    grid-template-columns: 25px minmax(0, 1fr) auto auto;
    align-items: center;
    gap: 8px;
    min-height: 52px;
    padding: 8px 3px;
    border: 0;
    border-bottom: 1px solid var(--line);
    border-radius: 0;
    background: transparent;
    color: var(--ink);
    cursor: pointer;
    text-align: left;
    transition: color var(--motion), padding var(--motion);
}

.sidebar-action:hover {
    padding-left: 7px;
    color: var(--lime);
}

.action-index {
    color: var(--lime);
    font-family: var(--font-mono);
    font-size: 8px;
}

.sidebar-action strong,
.sidebar-action small {
    display: block;
}

.sidebar-action strong {
    font-size: 11px;
    font-weight: 600;
}

.sidebar-action small {
    margin-top: 1px;
    color: var(--ink-muted);
    font-family: var(--font-mono);
    font-size: 7px;
    letter-spacing: 0.1em;
}

.action-arrow {
    font-size: 12px;
}

.notification-badge {
    display: grid;
    place-items: center;
    min-width: 18px;
    height: 18px;
    padding: 0 4px;
    background: var(--lime);
    color: #11140e;
    font-family: var(--font-mono);
    font-size: 8px;
    font-weight: 700;
}

/* Main workspace */
.workspace {
    position: relative;
    display: grid;
    grid-template-rows: var(--header-height) minmax(0, 1fr) auto;
    overflow: hidden;
    background: rgba(21, 24, 16, 0.76);
}

.workspace::before {
    position: absolute;
    top: var(--header-height);
    left: 24px;
    z-index: 0;
    width: 1px;
    height: 70px;
    background: linear-gradient(var(--lime), transparent);
    content: "";
    pointer-events: none;
}

.workspace-header {
    position: relative;
    z-index: 5;
    display: flex;
    align-items: center;
    justify-content: space-between;
    min-width: 0;
    gap: 16px;
    padding: 0 22px;
    border-bottom: 1px solid var(--line);
    background: rgba(21, 24, 16, 0.86);
    backdrop-filter: blur(14px);
}

.conversation-heading {
    display: grid;
    grid-template-columns: auto auto;
    align-items: center;
    gap: 1px 7px;
    min-width: 0;
}

.conversation-heading h1 {
    grid-column: 1 / 3;
    max-width: min(42vw, 510px);
    margin: 0;
    overflow: hidden;
    color: var(--ink);
    font-size: 15px;
    font-weight: 600;
    letter-spacing: -0.025em;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.live-dot {
    width: 5px;
    height: 5px;
    background: var(--lime);
    box-shadow: 0 0 0 4px var(--lime-wash);
}

.scene-status,
.context-kicker,
.dialog-label {
    color: var(--lime);
    font-family: var(--font-mono);
    font-size: 8px;
    font-weight: 500;
    letter-spacing: 0.13em;
    text-transform: uppercase;
}

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

.system-status {
    display: flex;
    align-items: center;
    gap: 6px;
    margin-right: 5px;
    color: var(--ink-muted);
    font-family: var(--font-mono);
    font-size: 7px;
    letter-spacing: 0.08em;
}

.system-status i {
    width: 4px;
    height: 4px;
    border-radius: 50%;
    background: var(--lime);
    box-shadow: 0 0 8px var(--lime);
}

.text-button,
.icon-button,
.secondary-button,
.primary-button,
.context-button,
.send-button,
.danger-confirm-button {
    border-radius: 0;
    cursor: pointer;
    transition: color var(--motion), background var(--motion), border-color var(--motion), transform var(--motion);
}

.text-button {
    display: flex;
    align-items: center;
    gap: 13px;
    min-height: 36px;
    padding: 0 11px;
    border: 1px solid var(--line-strong);
    background: transparent;
    color: var(--ink);
    font-size: 10px;
    font-weight: 600;
}

.text-button b {
    color: var(--lime);
    font-size: 12px;
}

.text-button:hover,
.secondary-button:hover,
.context-button:hover {
    border-color: var(--lime);
    color: var(--lime);
}

.icon-button {
    display: grid;
    place-items: center;
    width: 36px;
    height: 36px;
    padding: 0;
    border: 1px solid var(--line-strong);
    background: transparent;
    color: var(--ink-soft);
    font-size: 18px;
}

.icon-button:hover {
    border-color: var(--lime);
    color: var(--lime);
}

.danger-button:hover {
    border-color: var(--danger);
    background: var(--danger-wash);
    color: var(--danger);
}

.chat-messages {
    position: relative;
    z-index: 1;
    min-width: 0;
    min-height: 0;
    padding: 30px clamp(24px, 4.5vw, 72px);
    overflow-y: auto;
    scroll-behavior: smooth;
}

/* Empty state */
.empty-state {
    position: relative;
    display: grid;
    grid-template-columns: minmax(300px, 0.92fr) minmax(320px, 1.08fr);
    gap: clamp(34px, 5vw, 74px);
    align-content: center;
    width: min(1050px, 100%);
    min-height: 100%;
    margin: 0 auto;
    padding: 22px 0;
}

.hero-ghost {
    position: absolute;
    top: 5%;
    right: -2%;
    z-index: -1;
    color: transparent;
    font-family: var(--font-display);
    font-size: clamp(68px, 9vw, 144px);
    font-weight: 600;
    letter-spacing: -0.08em;
    line-height: 0.72;
    opacity: 0.07;
    -webkit-text-stroke: 1px var(--ink);
    user-select: none;
}

.hero-ghost i {
    color: var(--lime);
    font-weight: 600;
    -webkit-text-stroke: 0;
}

.empty-copy {
    align-self: center;
}

.empty-route {
    display: flex;
    align-items: center;
    width: 86%;
    margin-bottom: clamp(42px, 7vh, 78px);
    color: var(--ink-muted);
    font-family: var(--font-mono);
    font-size: 7px;
    letter-spacing: 0.1em;
}

.empty-route i {
    position: relative;
    flex: 1;
    height: 1px;
    margin: 0 10px;
    background: var(--line-strong);
}

.empty-route i::after {
    position: absolute;
    top: -2px;
    right: 0;
    width: 5px;
    height: 5px;
    background: var(--lime);
    content: "";
}

.empty-route b {
    color: var(--lime);
    font-size: 9px;
}

.empty-eyebrow {
    display: flex;
    align-items: center;
    gap: 9px;
    margin: 0 0 16px;
    color: var(--ink-muted);
    font-family: var(--font-mono);
    font-size: 8px;
    letter-spacing: 0.12em;
}

.empty-eyebrow span {
    width: 22px;
    height: 2px;
    background: var(--lime);
}

.empty-state h2 {
    margin: 0;
    color: var(--ink);
    font-family: var(--font-display);
    font-size: clamp(42px, 5.2vw, 76px);
    font-weight: 600;
    letter-spacing: -0.065em;
    line-height: 0.97;
}

.empty-state h2 em {
    color: var(--lime);
    font-weight: 600;
}

.empty-copy > p:last-child {
    max-width: 490px;
    margin: 26px 0 0;
    color: var(--ink-soft);
    font-size: 12px;
    line-height: 1.85;
}

.suggestion-grid {
    align-self: end;
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    border-top: 1px solid var(--line-strong);
    border-left: 1px solid var(--line-strong);
}

.suggestion-card {
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    min-height: 155px;
    padding: 17px 18px 20px;
    border: 0;
    border-right: 1px solid var(--line-strong);
    border-bottom: 1px solid var(--line-strong);
    border-radius: 0;
    background: rgba(16, 19, 13, 0.44);
    color: var(--ink);
    cursor: pointer;
    text-align: left;
    transition: color var(--motion), background var(--motion), transform var(--motion);
}

.suggestion-card::after {
    position: absolute;
    right: 0;
    bottom: 0;
    width: 0;
    height: 2px;
    background: var(--lime);
    content: "";
    transition: width var(--motion);
}

.suggestion-card:hover {
    z-index: 1;
    background: var(--lime);
    color: #11140e;
    transform: translateY(-3px);
}

.suggestion-card:hover::after {
    width: 100%;
}

.suggestion-card .card-index {
    margin-bottom: auto;
    color: var(--lime);
    font-family: var(--font-mono);
    font-size: 7px;
    letter-spacing: 0.08em;
}

.suggestion-card:hover .card-index,
.suggestion-card:hover > span:last-of-type {
    color: rgba(17, 20, 14, 0.66);
}

.suggestion-card strong {
    margin-top: 34px;
    font-family: var(--font-display);
    font-size: 20px;
    font-weight: 600;
    letter-spacing: -0.04em;
}

.suggestion-card > span:last-of-type {
    margin-top: 5px;
    color: var(--ink-muted);
    font-size: 9px;
}

.suggestion-card b {
    position: absolute;
    right: 16px;
    bottom: 18px;
    color: var(--lime);
    font-size: 15px;
}

.suggestion-card:hover b {
    color: #11140e;
}

/* Messages */
.message {
    position: relative;
    display: grid;
    grid-template-columns: 34px minmax(0, 1fr);
    gap: 12px;
    width: min(860px, 100%);
    margin: 0 auto 30px;
    animation: message-enter 300ms var(--ease) both;
}

.message + .message {
    padding-top: 24px;
    border-top: 1px solid var(--line);
}

.message.user {
    grid-template-columns: minmax(0, 1fr) 34px;
}

.message-avatar {
    display: grid;
    place-items: center;
    width: 34px;
    height: 34px;
    border: 1px solid var(--lime);
    background: transparent;
    color: var(--lime);
    font-family: var(--font-display);
    font-size: 13px;
    font-style: italic;
    font-weight: 600;
}

.message.user .message-avatar {
    grid-column: 2;
    grid-row: 1;
    border-color: var(--line-strong);
    color: var(--ink-soft);
    font-family: var(--font-sans);
    font-size: 10px;
    font-style: normal;
}

.message-content {
    min-width: 0;
    padding: 5px 0;
    color: var(--ink-soft);
    font-size: 13px;
    line-height: 1.78;
}

.message.bot .message-content::before,
.message.user .message-content::before {
    display: block;
    margin-bottom: 9px;
    color: var(--lime);
    font-family: var(--font-mono);
    font-size: 7px;
    letter-spacing: 0.12em;
    content: "CODEMATE / RESPONSE";
}

.message.user .message-content {
    grid-column: 1;
    grid-row: 1;
    justify-self: end;
    max-width: 84%;
    color: var(--ink);
    text-align: right;
}

.message.user .message-content::before {
    color: var(--ink-muted);
    content: "YOU / INPUT";
}

.message-content p {
    margin: 0 0 10px;
}

.message-content p:last-child {
    margin-bottom: 0;
}

.message-content h2,
.message-content h3 {
    margin: 21px 0 8px;
    color: var(--ink);
    font-family: var(--font-display);
    font-weight: 600;
    letter-spacing: -0.035em;
}

.message-content ul,
.message-content ol {
    margin: 10px 0;
    padding-left: 20px;
}

.message-content li + li {
    margin-top: 5px;
}

.message-content code,
.code-input,
.error-input {
    font-family: var(--font-mono);
    font-variant-ligatures: none;
}

.message-content :not(pre) > code {
    padding: 2px 5px;
    border-bottom: 1px solid var(--lime);
    background: var(--lime-wash);
    color: var(--lime);
    font-size: 0.9em;
}

.code-block,
.error-block {
    position: relative;
    max-width: 100%;
    margin: 14px 0;
    padding: 31px 15px 15px;
    overflow-x: auto;
    border: 1px solid var(--line-strong);
    border-left: 3px solid var(--lime);
    border-radius: 0;
    background: #0c0f0a;
    color: #dce7cc;
    font-family: var(--font-mono);
    font-size: 11px;
    line-height: 1.75;
    white-space: pre;
}

.code-block::before,
.error-block::before {
    position: absolute;
    top: 0;
    right: 0;
    left: 0;
    padding: 6px 10px;
    border-bottom: 1px solid var(--line);
    color: var(--ink-muted);
    font-family: var(--font-mono);
    font-size: 7px;
    letter-spacing: 0.1em;
    content: "SOURCE / CODE";
}

.error-block {
    border-left-color: var(--danger);
    color: #f6c4bf;
}

.error-block::before {
    color: var(--danger);
    content: "RUNTIME / ERROR";
}

.motivation-note {
    width: min(814px, calc(100% - 46px));
    margin: -16px auto 28px;
    padding: 10px 14px;
    border-left: 2px solid var(--lime);
    background: var(--lime-wash);
    color: var(--ink-soft);
    font-size: 10px;
}

.motivation-note::before {
    margin-right: 8px;
    color: var(--lime);
    content: "◆";
}

.typing .message-content {
    width: min(360px, 70%);
}

.typing-lines {
    display: grid;
    gap: 7px;
    padding-top: 6px;
}

.typing-lines span {
    display: block;
    height: 2px;
    background: linear-gradient(90deg, var(--line), var(--lime), var(--line));
    background-size: 220% 100%;
    animation: telemetry 1.25s ease infinite;
}

.typing-lines span:nth-child(1) { width: 72%; }
.typing-lines span:nth-child(2) { width: 100%; }
.typing-lines span:nth-child(3) { width: 48%; }

/* Composer */
.composer-shell {
    position: relative;
    z-index: 4;
    min-width: 0;
    padding: 10px clamp(20px, 4vw, 58px) 14px;
    border-top: 1px solid var(--line);
    background: rgba(16, 19, 13, 0.9);
    backdrop-filter: blur(18px);
}

.scene-selector {
    display: flex;
    align-items: center;
    gap: 0;
    width: min(880px, 100%);
    margin: 0 auto 8px;
    overflow-x: auto;
    scrollbar-width: none;
}

.scene-selector::-webkit-scrollbar {
    display: none;
}

.selector-label {
    flex: 0 0 auto;
    margin-right: 9px;
    color: var(--ink-muted);
    font-family: var(--font-mono);
    font-size: 7px;
    letter-spacing: 0.1em;
}

.action-chip {
    position: relative;
    flex: 0 0 auto;
    padding: 6px 10px;
    border: 0;
    border-right: 1px solid var(--line);
    border-radius: 0;
    background: transparent;
    color: var(--ink-muted);
    cursor: pointer;
    font-size: 9px;
    transition: color var(--motion), background var(--motion);
}

.action-chip:hover {
    color: var(--ink);
}

.action-chip.active {
    background: var(--lime-wash);
    color: var(--lime);
}

.action-chip.active::before {
    position: absolute;
    right: 6px;
    bottom: 3px;
    width: 3px;
    height: 3px;
    background: var(--lime);
    content: "";
}

.composer {
    position: relative;
    width: min(880px, 100%);
    min-width: 0;
    margin: 0 auto;
    border: 1px solid var(--line-strong);
    border-left: 3px solid var(--lime);
    background: rgba(27, 31, 22, 0.96);
    box-shadow: 0 16px 48px rgba(0, 0, 0, 0.16);
    transition: border-color var(--motion), box-shadow var(--motion);
}

.composer::before,
.composer::after {
    position: absolute;
    right: -1px;
    width: 12px;
    height: 1px;
    background: var(--lime);
    content: "";
}

.composer::before { top: -1px; }
.composer::after { bottom: -1px; }

.composer:focus-within {
    border-color: var(--lime);
    box-shadow: 0 0 0 1px var(--lime-wash), 0 20px 55px rgba(0, 0, 0, 0.28);
}

.composer-corner {
    position: absolute;
    top: 10px;
    right: 12px;
    color: var(--ink-muted);
    font-family: var(--font-mono);
    font-size: 7px;
    letter-spacing: 0.1em;
    pointer-events: none;
}

.message-input {
    display: block;
    width: 100%;
    min-height: 59px;
    max-height: 180px;
    padding: 14px 72px 7px 15px;
    resize: none;
    overflow-y: auto;
    border: 0;
    outline: 0;
    background: transparent;
    color: var(--ink);
    font-size: 13px;
    line-height: 1.6;
}

.message-input::placeholder,
.code-input::placeholder,
.error-input::placeholder,
input::placeholder,
textarea::placeholder {
    color: var(--ink-muted);
    opacity: 0.82;
}

.composer-toolbar,
.composer-submit {
    display: flex;
    align-items: center;
}

.composer-toolbar {
    justify-content: space-between;
    min-width: 0;
    gap: 12px;
    padding: 6px 7px 7px 12px;
}

.context-button {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 5px 4px;
    border: 0;
    background: transparent;
    color: var(--ink-muted);
    font-size: 9px;
}

.context-button span {
    color: var(--lime);
    font-size: 14px;
}

.composer-submit {
    flex: 0 0 auto;
    gap: 10px;
}

.input-count,
.keyboard-hint {
    color: var(--ink-muted);
    font-family: var(--font-mono);
    font-size: 7px;
    font-variant-numeric: tabular-nums;
}

.keyboard-hint {
    padding-left: 9px;
    border-left: 1px solid var(--line);
}

.send-button {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
    min-width: 100px;
    height: 39px;
    padding: 0 12px;
    border: 1px solid var(--lime);
    background: var(--lime);
    color: #11140e;
    font-size: 10px;
    font-weight: 700;
}

.send-button b {
    font-size: 14px;
}

.send-button:hover {
    background: transparent;
    color: var(--lime);
}

.send-button:disabled {
    border-color: var(--line-strong);
    background: var(--line);
    color: var(--ink-muted);
    cursor: not-allowed;
}

.composer-note {
    width: min(880px, 100%);
    margin: 6px auto 0;
    color: var(--ink-muted);
    font-size: 8px;
    text-align: center;
}

.context-summary {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
    width: min(880px, 100%);
    margin: 0 auto 8px;
    padding: 7px 10px;
    border: 1px solid rgba(213, 255, 54, 0.28);
    background: var(--lime-wash);
    color: var(--lime);
    font-size: 9px;
}

.context-summary > span {
    display: flex;
    align-items: center;
    gap: 8px;
}

.context-summary i {
    width: 4px;
    height: 4px;
    background: var(--lime);
}

.context-summary button {
    padding: 1px 4px;
    border: 0;
    border-bottom: 1px solid currentColor;
    background: transparent;
    color: inherit;
    cursor: pointer;
    font-size: 8px;
}

/* Context panel and sheets */
.context-panel {
    position: relative;
    z-index: 8;
    display: grid;
    grid-template-rows: auto minmax(0, 1fr) auto;
    overflow: hidden;
    border-left: 1px solid var(--line);
    background: rgba(12, 15, 10, 0.96);
    opacity: 1;
    transition: opacity var(--motion), transform var(--motion);
}

.context-panel::before {
    position: absolute;
    top: 0;
    right: 0;
    width: 44%;
    height: 2px;
    background: var(--lime);
    content: "";
}

.context-closed .context-panel {
    pointer-events: none;
    opacity: 0;
    transform: translateX(18px);
}

.context-header,
.sheet-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    min-height: var(--header-height);
    padding: 0 18px;
    border-bottom: 1px solid var(--line);
}

.context-header h2,
.sheet-header h2 {
    margin: 2px 0 0;
    font-family: var(--font-display);
    font-size: 24px;
    font-style: italic;
    font-weight: 600;
    letter-spacing: -0.05em;
}

.context-body,
.sheet-content {
    min-height: 0;
    padding: 20px 18px;
    overflow-y: auto;
}

.panel-intro,
.sheet-lead {
    margin: 0 0 26px;
    padding: 0 0 17px;
    border-bottom: 1px solid var(--line);
    color: var(--ink-muted);
    font-size: 10px;
    line-height: 1.7;
}

.field-group {
    display: grid;
    gap: 8px;
    margin-bottom: 22px;
}

.field-group label,
.field-heading label {
    color: var(--ink-soft);
    font-size: 10px;
    font-weight: 600;
}

.field-group label > span,
.field-heading label > span {
    margin-right: 7px;
    color: var(--lime);
    font-family: var(--font-mono);
    font-size: 7px;
}

.field-group small {
    color: var(--ink-muted);
    font-size: 9px;
}

.field-heading {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
}

.field-heading > span {
    color: var(--ink-muted);
    font-family: var(--font-mono);
    font-size: 7px;
    font-variant-numeric: tabular-nums;
}

input,
select,
.sheet-content textarea,
.code-input,
.error-input {
    width: 100%;
    border: 1px solid var(--line-strong);
    border-radius: 0;
    background: rgba(27, 31, 22, 0.7);
    color: var(--ink);
    transition: border-color var(--motion), box-shadow var(--motion);
}

input,
select,
.sheet-content textarea {
    min-height: 43px;
    padding: 10px 11px;
    font-size: 11px;
}

select {
    appearance: none;
    background-image: linear-gradient(45deg, transparent 50%, var(--lime) 50%), linear-gradient(135deg, var(--lime) 50%, transparent 50%);
    background-position: calc(100% - 14px) 18px, calc(100% - 10px) 18px;
    background-repeat: no-repeat;
    background-size: 4px 4px, 4px 4px;
}

input:focus,
select:focus,
textarea:focus {
    border-color: var(--lime);
    box-shadow: 0 0 0 1px var(--lime-wash);
    outline: 0;
}

.code-input,
.error-input {
    display: block;
    min-height: 210px;
    padding: 12px;
    resize: vertical;
    background: #0b0e09;
    color: #dce7cc;
    font-size: 10px;
    line-height: 1.7;
}

.error-input {
    min-height: 128px;
    border-left: 2px solid var(--danger);
    color: #f5c6c1;
}

.context-footer {
    padding: 13px 18px 16px;
    border-top: 1px solid var(--line);
}

.context-footer p {
    margin: 0 0 10px;
    color: var(--ink-muted);
    font-size: 8px;
}

.context-footer p span {
    margin-right: 5px;
    color: var(--lime);
}

.secondary-button,
.primary-button,
.danger-confirm-button {
    min-height: 40px;
    padding: 8px 13px;
    font-size: 10px;
    font-weight: 600;
}

.secondary-button {
    width: 100%;
    border: 1px solid var(--line-strong);
    background: transparent;
    color: var(--ink-soft);
}

.primary-button {
    border: 1px solid var(--lime);
    background: var(--lime);
    color: #11140e;
}

.primary-button:hover {
    background: transparent;
    color: var(--lime);
}

.sheet-backdrop {
    position: fixed;
    inset: 0;
    z-index: 30;
    background: rgba(5, 7, 4, 0.68);
    backdrop-filter: blur(5px);
    animation: fade 180ms ease both;
}

.utility-sheet {
    position: fixed;
    top: 0;
    right: 0;
    bottom: 0;
    z-index: 40;
    display: grid;
    grid-template-rows: auto minmax(0, 1fr);
    width: min(440px, 94vw);
    border-left: 1px solid var(--lime);
    background: #10130d;
    box-shadow: -28px 0 80px rgba(0, 0, 0, 0.4);
    animation: slide-in 280ms var(--ease) both;
}

.utility-sheet::before {
    position: absolute;
    top: 0;
    left: 0;
    width: 48%;
    height: 3px;
    background: var(--lime);
    content: "";
}

.sheet-content textarea {
    resize: vertical;
}

.sheet-actions {
    display: grid;
    grid-template-columns: 1fr 1.25fr;
    gap: 9px;
    margin-top: 28px;
}

.sheet-actions .secondary-button {
    width: auto;
}

.learning-metrics {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    margin-bottom: 30px;
    border-top: 1px solid var(--line-strong);
    border-left: 1px solid var(--line-strong);
}

.metric-block {
    position: relative;
    min-height: 118px;
    padding: 13px;
    border-right: 1px solid var(--line-strong);
    border-bottom: 1px solid var(--line-strong);
    background: rgba(27, 31, 22, 0.55);
}

.metric-block::after {
    position: absolute;
    top: 0;
    right: 0;
    width: 12px;
    height: 2px;
    background: var(--lime);
    content: "";
}

.metric-block span,
.metric-block small {
    display: block;
}

.metric-block span {
    color: var(--ink-muted);
    font-family: var(--font-mono);
    font-size: 7px;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.metric-block strong {
    display: block;
    margin: 13px 0 5px;
    color: var(--lime);
    font-family: var(--font-display);
    font-size: 31px;
    font-style: italic;
    font-weight: 600;
    font-variant-numeric: tabular-nums;
    letter-spacing: -0.06em;
}

.metric-block small {
    overflow: hidden;
    color: var(--ink-muted);
    font-size: 8px;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.learning-section {
    margin-top: 28px;
}

.learning-section h3 {
    margin: 0 0 12px;
    padding-bottom: 10px;
    border-bottom: 1px solid var(--line-strong);
    font-family: var(--font-display);
    font-size: 20px;
    font-style: italic;
    font-weight: 600;
}

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

.reminder-item {
    padding: 12px;
    border: 1px solid var(--line);
    background: var(--panel);
}

.reminder-item p {
    margin: 0 0 11px;
    color: var(--ink-soft);
    font-size: 10px;
}

.reminder-actions {
    display: flex;
    gap: 7px;
}

.reminder-actions button {
    padding: 5px 8px;
    border: 1px solid var(--line-strong);
    border-radius: 0;
    background: transparent;
    color: var(--ink-muted);
    cursor: pointer;
    font-size: 8px;
}

.reminder-actions button:hover {
    border-color: var(--lime);
    color: var(--lime);
}

.learning-empty {
    padding: 30px 10px;
    color: var(--ink-muted);
    font-size: 10px;
    text-align: center;
}

.toast-region {
    position: fixed;
    right: 18px;
    bottom: 18px;
    z-index: 80;
    display: grid;
    gap: 8px;
    width: min(340px, calc(100vw - 36px));
}

.toast {
    padding: 12px 14px;
    border: 1px solid var(--lime);
    border-left-width: 3px;
    background: #10130d;
    color: var(--ink);
    box-shadow: 0 18px 50px rgba(0, 0, 0, 0.32);
    font-size: 10px;
    animation: message-enter 220ms var(--ease) both;
}

.toast.error {
    border-color: var(--danger);
    color: #ffd3cf;
}

.confirm-dialog {
    width: min(410px, calc(100vw - 32px));
    padding: 0;
    border: 1px solid var(--line-strong);
    border-top: 3px solid var(--danger);
    border-radius: 0;
    background: #10130d;
    color: var(--ink);
    box-shadow: 0 28px 90px rgba(0, 0, 0, 0.5);
}

.confirm-dialog::backdrop {
    background: rgba(5, 7, 4, 0.72);
    backdrop-filter: blur(5px);
}

.confirm-dialog form {
    padding: 24px;
}

.confirm-dialog .dialog-label {
    color: var(--danger);
}

.confirm-dialog h2 {
    margin: 6px 0 8px;
    font-family: var(--font-display);
    font-size: 25px;
    font-style: italic;
    letter-spacing: -0.04em;
}

.confirm-dialog p {
    margin: 0;
    color: var(--ink-muted);
    font-size: 11px;
}

.dialog-actions {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 9px;
    margin-top: 25px;
}

.dialog-actions .secondary-button {
    width: auto;
}

.danger-confirm-button {
    border: 1px solid var(--danger);
    background: var(--danger);
    color: #18100f;
}

.danger-confirm-button:hover {
    background: transparent;
    color: var(--danger);
}

.navigation-scrim,
.mobile-only {
    display: none;
}

@keyframes message-enter {
    from { opacity: 0; transform: translateY(8px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes fade {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes slide-in {
    from { opacity: 0; transform: translateX(26px); }
    to { opacity: 1; transform: translateX(0); }
}

@keyframes telemetry {
    from { background-position: 100% 0; }
    to { background-position: -100% 0; }
}

::-webkit-scrollbar {
    width: 7px;
    height: 7px;
}

::-webkit-scrollbar-track {
    background: transparent;
}

::-webkit-scrollbar-thumb {
    border: 2px solid transparent;
    background: rgba(213, 255, 54, 0.28);
    background-clip: padding-box;
}

@media (max-width: 1440px) {
    :root {
        --sidebar-width: 232px;
        --context-width: 326px;
    }

    .empty-state {
        grid-template-columns: 1fr;
        gap: 26px;
        align-content: center;
        max-width: 850px;
        padding-top: 26px;
    }

    .empty-route {
        width: 55%;
        margin-bottom: 24px;
    }

    .empty-copy > p:last-child {
        max-width: 620px;
    }

    .suggestion-grid {
        align-self: auto;
        grid-template-columns: repeat(4, minmax(0, 1fr));
    }

    .suggestion-card {
        min-height: 116px;
        padding: 13px 14px 15px;
    }

    .suggestion-card strong {
        margin-top: 22px;
        font-size: 17px;
    }

    .suggestion-card b {
        right: 12px;
        bottom: 13px;
    }

    .hero-ghost {
        top: 3%;
    }
}

@media (max-width: 980px) {
    .app-shell,
    .app-shell.context-closed {
        grid-template-columns: var(--sidebar-width) minmax(0, 1fr) 0;
    }

    .context-panel {
        position: fixed;
        top: 0;
        right: 0;
        bottom: 0;
        z-index: 18;
        width: min(390px, 94vw);
        box-shadow: -24px 0 70px rgba(0, 0, 0, 0.42);
        transform: translateX(0);
    }

    .context-closed .context-panel {
        transform: translateX(105%);
    }

    .system-status {
        display: none;
    }
}

@media (max-width: 760px) {
    :root {
        --header-height: 64px;
    }

    .app-shell,
    .app-shell.context-closed {
        grid-template-columns: minmax(0, 1fr);
    }

    .mobile-only {
        display: grid;
    }

    .conversation-sidebar {
        position: fixed;
        inset: 0 auto 0 0;
        z-index: 25;
        width: min(294px, 88vw);
        transform: translateX(-105%);
        box-shadow: 26px 0 70px rgba(0, 0, 0, 0.45);
        transition: transform var(--motion);
    }

    body.navigation-open .conversation-sidebar {
        transform: translateX(0);
    }

    body.navigation-open .navigation-scrim {
        position: fixed;
        inset: 0;
        z-index: 20;
        display: block;
        border: 0;
        background: rgba(5, 7, 4, 0.72);
        backdrop-filter: blur(4px);
    }

    .workspace-header {
        padding: 0 12px;
    }

    .conversation-heading h1 {
        max-width: 43vw;
        font-size: 13px;
    }

    .chat-messages {
        padding: 22px 16px;
    }

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

    .empty-state {
        padding-top: 24px;
    }

    .empty-route {
        width: 70%;
        margin-bottom: 36px;
    }

    .empty-state h2 {
        font-size: clamp(40px, 11vw, 58px);
    }

    .hero-ghost {
        font-size: 86px;
    }

    .composer-shell {
        padding-right: 12px;
        padding-left: 12px;
    }
}

@media (max-width: 520px) {
    .workspace-actions .danger-button {
        display: none;
    }

    .text-button {
        min-height: 34px;
        padding: 0 9px;
    }

    .text-button b {
        display: none;
    }

    .empty-state {
        display: block;
        min-height: auto;
        padding-top: 18px;
    }

    .empty-route {
        margin-bottom: 32px;
    }

    .empty-copy > p:last-child {
        margin-top: 20px;
        font-size: 11px;
    }

    .suggestion-grid {
        grid-template-columns: 1fr;
        margin-top: 30px;
    }

    .suggestion-card {
        min-height: 96px;
        padding: 13px 15px 15px;
    }

    .suggestion-card strong {
        margin-top: 20px;
        font-size: 18px;
    }

    .hero-ghost {
        top: 0;
        right: -20px;
        font-size: 67px;
    }

    .message {
        grid-template-columns: 28px minmax(0, 1fr);
        gap: 9px;
        margin-bottom: 24px;
    }

    .message.user {
        grid-template-columns: minmax(0, 1fr) 28px;
    }

    .message-avatar {
        width: 28px;
        height: 28px;
    }

    .message.user .message-content {
        max-width: 92%;
    }

    .message-content {
        font-size: 12px;
    }

    .scene-selector {
        margin-bottom: 6px;
    }

    .selector-label {
        display: none;
    }

    .action-chip {
        padding: 5px 8px;
    }

    .message-input {
        min-height: 54px;
        padding-right: 55px;
    }

    .composer-corner,
    .input-count,
    .keyboard-hint,
    .composer-note {
        display: none;
    }

    .send-button {
        min-width: 45px;
        width: 45px;
        padding: 0;
        justify-content: center;
    }

    .send-button span {
        display: none;
    }

    .context-button {
        max-width: 170px;
        overflow: hidden;
        text-overflow: ellipsis;
        white-space: nowrap;
    }

    .utility-sheet {
        width: 100vw;
    }

    .learning-metrics {
        grid-template-columns: 1fr 1fr;
    }
}

/* 2026 conversation-first shell */
:root {
    --rail-width: 72px;
    --history-width: 320px;
}

.app-shell,
.app-shell.context-closed {
    grid-template-columns: var(--rail-width) minmax(0, 1fr) 0;
}

.app-rail {
    position: relative;
    z-index: 14;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    min-width: 0;
    padding: 16px 10px 14px;
    border-right: 1px solid var(--line);
    background: rgba(13, 16, 11, 0.94);
}

.rail-brand,
.rail-button {
    display: grid;
    place-items: center;
    width: 50px;
    min-height: 50px;
    padding: 5px 2px;
    border: 1px solid transparent;
    border-radius: 8px;
    background: transparent;
    color: var(--ink-muted);
    cursor: pointer;
    transition: color var(--motion), border-color var(--motion), background var(--motion), transform var(--motion);
}

.rail-brand {
    width: 48px;
    height: 48px;
    margin-bottom: 12px;
    border-color: var(--line-strong);
    color: var(--ink);
    font-family: var(--font-display);
    font-size: 17px;
    font-style: italic;
    font-weight: 600;
    letter-spacing: -0.08em;
}

.rail-button span:first-child {
    font-family: var(--font-mono);
    font-size: 18px;
    line-height: 1;
}

.rail-button small {
    margin-top: 3px;
    font-size: 9px;
}

.rail-button:hover,
.rail-button[aria-expanded="true"] {
    border-color: var(--line-strong);
    background: var(--panel-raised);
    color: var(--ink);
    transform: translateY(-1px);
}

.rail-button:active,
.rail-brand:active {
    transform: translateY(1px) scale(0.98);
}

.rail-primary {
    background: var(--lime);
    color: #11140e;
}

.rail-primary:hover {
    border-color: var(--lime);
    background: transparent;
    color: var(--lime);
}

.rail-spacer {
    flex: 1;
}

.rail-button {
    position: relative;
}

.rail-badge {
    position: absolute;
    top: 3px;
    right: 2px;
}

.conversation-sidebar {
    position: fixed;
    top: 0;
    bottom: 0;
    left: var(--rail-width);
    z-index: 24;
    width: min(var(--history-width), calc(100vw - var(--rail-width)));
    box-shadow: 24px 0 70px rgba(0, 0, 0, 0.34);
    opacity: 0;
    pointer-events: none;
    transform: translateX(calc(-100% - 12px));
    transition: opacity var(--motion), transform var(--motion);
}

body.navigation-open .conversation-sidebar {
    opacity: 1;
    pointer-events: auto;
    transform: translateX(0);
}

body.navigation-open .navigation-scrim {
    position: fixed;
    inset: 0;
    z-index: 20;
    display: block;
    border: 0;
    background: rgba(5, 7, 4, 0.46);
    backdrop-filter: blur(3px);
}

.workspace {
    grid-column: 2;
}

.context-panel {
    position: fixed;
    top: 0;
    right: 0;
    bottom: 0;
    z-index: 28;
    width: min(var(--context-width), 94vw);
    box-shadow: -24px 0 70px rgba(0, 0, 0, 0.42);
    transform: translateX(0);
}

.context-closed .context-panel {
    transform: translateX(105%);
}

.conversation-title-button {
    grid-column: 1 / 3;
    display: flex;
    align-items: center;
    gap: 8px;
    max-width: min(42vw, 510px);
    padding: 0;
    overflow: hidden;
    border: 0;
    background: transparent;
    color: var(--ink);
    cursor: pointer;
    text-align: left;
}

.conversation-title-button span {
    overflow: hidden;
    font-size: 15px;
    font-weight: 600;
    letter-spacing: -0.025em;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.conversation-title-button i {
    color: var(--ink-muted);
    font-family: var(--font-sans);
    font-size: 10px;
    font-style: normal;
    opacity: 0;
    transition: opacity var(--motion), color var(--motion);
}

.conversation-title-button:hover i,
.conversation-title-button:focus-visible i {
    color: var(--lime);
    opacity: 1;
}

.conversation-title-input {
    grid-column: 1 / 3;
    width: min(42vw, 510px);
    height: 29px;
    padding: 2px 7px;
    border: 1px solid var(--lime);
    border-radius: 4px;
    background: var(--panel-deep);
    color: var(--ink);
    font-size: 14px;
    font-weight: 600;
}

.conversation-menu-wrap {
    position: relative;
}

.conversation-menu {
    position: absolute;
    top: calc(100% + 8px);
    right: 0;
    z-index: 12;
    width: 148px;
    padding: 5px;
    border: 1px solid var(--line-strong);
    border-radius: 6px;
    background: #11140e;
    box-shadow: 0 18px 42px rgba(0, 0, 0, 0.36);
}

.conversation-menu button {
    width: 100%;
    padding: 9px 10px;
    border: 0;
    border-radius: 4px;
    background: transparent;
    color: var(--ink-soft);
    cursor: pointer;
    font-size: 11px;
    text-align: left;
}

.conversation-menu button:hover {
    background: var(--panel-raised);
    color: var(--ink);
}

.conversation-menu .menu-danger:hover {
    background: var(--danger-wash);
    color: var(--danger);
}

.home-intro {
    display: none;
}

.home-watermark {
    display: none;
}

.app-shell.home-mode .workspace {
    display: block;
}

.app-shell.home-mode .home-watermark {
    position: absolute;
    top: -76px;
    left: 50%;
    z-index: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    width: min(1120px, calc(100vw - var(--rail-width) - 48px));
    overflow: hidden;
    color: transparent;
    font-family: var(--font-display);
    font-size: clamp(80px, 10.4vw, 160px);
    font-weight: 600;
    letter-spacing: -0.075em;
    line-height: 0.62;
    opacity: 0.055;
    pointer-events: none;
    text-align: center;
    transform: translateX(-50%);
    user-select: none;
    -webkit-text-stroke: 1px var(--ink);
}

.app-shell.home-mode .home-watermark span:last-child {
    margin-left: 0;
    white-space: nowrap;
}

.app-shell.home-mode .home-watermark i {
    color: var(--lime);
    font-weight: 600;
    -webkit-text-stroke: 0;
}

.app-shell.home-mode .workspace::before,
.app-shell.home-mode .workspace-header,
.app-shell.home-mode .chat-messages {
    display: none;
}

.app-shell.home-mode .composer-shell {
    position: absolute;
    top: 48%;
    left: 50%;
    width: min(760px, calc(100% - 40px));
    padding: 0;
    border: 0;
    background: transparent;
    backdrop-filter: none;
    z-index: 2;
    transform: translate(-50%, -50%);
}

.app-shell.home-mode .home-intro {
    position: relative;
    z-index: 1;
    display: block;
    margin-bottom: 28px;
    text-align: center;
}

.home-intro > span {
    color: var(--lime);
    font-family: var(--font-mono);
    font-size: 8px;
    letter-spacing: 0.16em;
}

.home-intro h2 {
    margin: 13px 0 8px;
    font-family: var(--font-display);
    font-size: clamp(34px, 4vw, 54px);
    font-weight: 600;
    letter-spacing: -0.055em;
    line-height: 1.08;
    text-wrap: balance;
}

.home-intro p {
    margin: 0;
    color: var(--ink-muted);
    font-size: 12px;
}

.app-shell.home-mode .scene-selector,
.app-shell.home-mode .composer-note,
.app-shell.home-mode .composer-corner,
.app-shell.home-mode .keyboard-hint {
    display: none;
}

.app-shell.home-mode .composer {
    z-index: 1;
    width: 100%;
    border: 1px solid var(--line-strong);
    border-radius: 18px;
    background: rgba(27, 31, 22, 0.94);
    box-shadow: 0 0 0 1px rgba(213, 255, 54, 0.03), 0 34px 100px rgba(0, 0, 0, 0.34);
}

.app-shell.home-mode .composer::before,
.app-shell.home-mode .composer::after {
    display: none;
}

.app-shell.home-mode .message-input {
    min-height: 76px;
    padding: 19px 76px 8px 20px;
    font-size: 14px;
}

.app-shell.home-mode .composer-toolbar {
    padding: 7px 10px 10px 17px;
}

.app-shell.home-mode .send-button {
    min-width: 46px;
    width: 46px;
    border-radius: 10px;
    justify-content: center;
}

.app-shell.home-mode .send-button span {
    display: none;
}

.app-shell.home-mode .context-summary {
    border-radius: 9px;
}

.empty-state {
    display: grid;
    grid-template-columns: 1fr;
    place-items: center;
    width: min(680px, 100%);
    text-align: center;
}

.empty-state h2 {
    font-size: clamp(30px, 4vw, 48px);
}

.empty-copy > p:last-child {
    margin: 14px auto 0;
}

.conversation-list-empty {
    line-height: 1.7;
}

@media (max-width: 760px) {
    :root {
        --rail-width: 58px;
    }

    .app-shell,
    .app-shell.context-closed {
        grid-template-columns: var(--rail-width) minmax(0, 1fr) 0;
    }

    .app-rail {
        padding: 12px 5px 10px;
    }

    .rail-brand,
    .rail-button {
        width: 46px;
        min-height: 46px;
    }

    .rail-brand {
        font-size: 15px;
    }

    .rail-button small {
        display: none;
    }

    .conversation-sidebar {
        left: var(--rail-width);
        width: min(294px, calc(100vw - var(--rail-width)));
    }

    .workspace-header {
        padding-left: 10px;
    }

    #btn-open-navigation {
        display: none;
    }

    .conversation-title-button,
    .conversation-title-input {
        max-width: 43vw;
        width: 43vw;
    }

    .conversation-title-button span {
        font-size: 13px;
    }

    .app-shell.home-mode .composer-shell {
        top: 44%;
        width: calc(100% - 26px);
    }

    .app-shell.home-mode .home-watermark {
        top: -56px;
        left: 50%;
        width: calc(100vw - var(--rail-width) - 20px);
        font-size: clamp(62px, 22vw, 96px);
        line-height: 0.68;
        opacity: 0.045;
    }

    .home-intro {
        padding: 0 8px;
    }

    .home-intro h2 {
        font-size: clamp(30px, 8vw, 42px);
    }

    .app-shell.home-mode .message-input {
        min-height: 66px;
        padding: 16px 56px 6px 16px;
    }
}

@media (max-width: 520px) {
    .workspace-actions .danger-button {
        display: grid;
    }

    .workspace-actions .text-button span {
        display: none;
    }

    .workspace-actions .text-button b {
        display: inline;
    }

    .system-status {
        display: none;
    }

    .app-shell.home-mode .input-count {
        display: none;
    }
}

@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        scroll-behavior: auto !important;
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}