* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

:root {
    --bg: #080a10;
    --bg2: #0d1018;
    --bg3: #111520;
    --glass: rgba(255, 255, 255, 0.04);
    --glass2: rgba(255, 255, 255, 0.07);
    --border: rgba(255, 255, 255, 0.07);
    --border2: rgba(255, 255, 255, 0.12);
    --accent: #00c8ff;
    --accent2: #7c5cfc;
    --accent3: #00ffb3;
    --text: #dde4f0;
    --text2: #8892a4;
    --text3: #4a5568;
    --danger: #ff4757;
    --success: #00e676;
    --warning: #ffb020;
    --user-msg: #1a1f35;
    --ai-msg: #0f1420;
}

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

body {
    background: var(--bg);
    color: var(--text);
    font-family: "Segoe UI", system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
    font-size: 14px;
}

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

button {
    color: inherit;
}

a {
    color: var(--accent);
}

::-webkit-scrollbar {
    width: 4px;
}

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

::-webkit-scrollbar-thumb {
    background: rgba(255, 255, 255, 0.12);
    border-radius: 2px;
}

.hud-grid::before {
    background-image:
        linear-gradient(rgba(0, 200, 255, 0.025) 1px, transparent 1px),
        linear-gradient(90deg, rgba(0, 200, 255, 0.025) 1px, transparent 1px);
    background-size: 44px 44px;
    content: "";
    inset: 0;
    pointer-events: none;
    position: fixed;
    z-index: 0;
}

.ambient-layer {
    inset: 0;
    overflow: hidden;
    pointer-events: none;
    position: fixed;
    z-index: 0;
}

.ambient-layer::before,
.ambient-layer::after {
    content: "";
    filter: blur(90px);
    opacity: 0.56;
    position: absolute;
}

.ambient-layer::before {
    background: radial-gradient(circle, rgba(124, 92, 252, 0.18), transparent 64%);
    height: 420px;
    left: -130px;
    top: -110px;
    width: 420px;
}

.ambient-layer::after {
    background: radial-gradient(circle, rgba(0, 200, 255, 0.14), transparent 66%);
    bottom: -140px;
    height: 420px;
    right: -130px;
    width: 420px;
}

.logo-icon {
    align-items: center;
    background: linear-gradient(135deg, var(--accent2), var(--accent));
    display: flex;
    justify-content: center;
}

.logo-icon svg {
    fill: none;
    stroke: currentColor;
    stroke-linecap: round;
    stroke-linejoin: round;
    stroke-width: 2;
}

.logo-version {
    background: rgba(0, 200, 255, 0.1);
    border: 1px solid rgba(0, 200, 255, 0.2);
    border-radius: 4px;
    color: var(--accent);
    font-size: 9px;
    font-weight: 700;
    letter-spacing: 0.15em;
    padding: 2px 7px;
}

.status-row {
    align-items: center;
    display: flex;
    gap: 6px;
}

.status-dot {
    background: var(--success);
    border-radius: 50%;
    box-shadow: 0 0 6px var(--success);
    flex-shrink: 0;
    height: 6px;
    width: 6px;
}

.status-dot.pulse {
    animation: pulse 2s ease infinite;
}

@keyframes pulse {
    0%,
    100% {
        box-shadow: 0 0 6px var(--success);
    }

    50% {
        box-shadow: 0 0 12px var(--success), 0 0 20px rgba(0, 230, 118, 0.3);
    }
}

.badge {
    border-radius: 4px;
    font-size: 10px;
    font-weight: 700;
    letter-spacing: 0.06em;
    padding: 3px 8px;
    white-space: nowrap;
}

.badge-cyan {
    background: rgba(0, 200, 255, 0.1);
    border: 1px solid rgba(0, 200, 255, 0.25);
    color: var(--accent);
}

.badge-purple {
    background: rgba(124, 92, 252, 0.12);
    border: 1px solid rgba(124, 92, 252, 0.3);
    color: #a78bfa;
}

.badge-green {
    background: rgba(0, 255, 179, 0.08);
    border: 1px solid rgba(0, 255, 179, 0.2);
    color: var(--accent3);
}

.badge-gray {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border2);
    color: var(--text2);
}

.badge-danger {
    background: rgba(255, 71, 87, 0.08);
    border: 1px solid rgba(255, 71, 87, 0.22);
    color: #ff7d89;
}

.spinner {
    animation: spin 0.7s linear infinite;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    border-top-color: #fff;
    height: 16px;
    width: 16px;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

/* Login */
.login-page {
    align-items: center;
    display: flex;
    justify-content: center;
    min-height: 100vh;
    overflow: hidden;
    position: relative;
}

.login-shell {
    max-width: 440px;
    padding: 20px;
    position: relative;
    width: 100%;
    z-index: 1;
}

.login-logo {
    align-items: center;
    display: flex;
    flex-direction: column;
    gap: 10px;
    margin-bottom: 28px;
}

.login-logo .logo-icon {
    border-radius: 14px;
    box-shadow: 0 0 28px rgba(0, 200, 255, 0.25), 0 0 60px rgba(124, 92, 252, 0.15);
    color: #fff;
    height: 54px;
    width: 54px;
}

.login-logo .logo-icon svg {
    height: 24px;
    width: 24px;
}

.logo-name {
    color: #fff;
    font-size: 22px;
    font-weight: 800;
    letter-spacing: 0.1em;
}

.logo-status {
    color: var(--text3);
    font-size: 11px;
    letter-spacing: 0.03em;
}

.badges-row {
    display: flex;
    gap: 6px;
    justify-content: center;
    margin-bottom: 24px;
}

.login-card {
    background: rgba(13, 16, 24, 0.86);
    border: 1px solid var(--border2);
    border-radius: 14px;
    overflow: hidden;
    padding: 30px;
    position: relative;
}

.login-card::before {
    background: linear-gradient(90deg, transparent, var(--accent), var(--accent2), transparent);
    content: "";
    height: 1px;
    left: 0;
    opacity: 0.5;
    position: absolute;
    right: 0;
    top: 0;
}

.tabs {
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid var(--border);
    border-radius: 9px;
    display: flex;
    gap: 2px;
    margin-bottom: 24px;
    padding: 3px;
}

.tab {
    background: transparent;
    border: 1px solid transparent;
    border-radius: 7px;
    color: var(--text2);
    cursor: pointer;
    flex: 1;
    font-size: 12px;
    font-weight: 600;
    letter-spacing: 0.03em;
    padding: 7px;
    transition: all 0.2s;
}

.tab.active {
    background: linear-gradient(135deg, rgba(124, 92, 252, 0.3), rgba(0, 200, 255, 0.2));
    border-color: rgba(0, 200, 255, 0.25);
    color: #fff;
}

.card-title {
    color: #fff;
    font-size: 17px;
    font-weight: 700;
    letter-spacing: 0.02em;
    margin-bottom: 4px;
}

.card-sub {
    color: var(--text3);
    font-size: 12px;
    line-height: 1.6;
    margin-bottom: 24px;
}

.field {
    margin-bottom: 16px;
}

.field-label {
    align-items: center;
    color: var(--text3);
    display: flex;
    font-size: 11px;
    font-weight: 700;
    gap: 6px;
    letter-spacing: 0.07em;
    margin-bottom: 7px;
    text-transform: uppercase;
}

.field-label svg {
    height: 12px;
    stroke: var(--accent2);
    width: 12px;
}

.field-wrap {
    position: relative;
}

.field-input {
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid var(--border2);
    border-radius: 9px;
    color: var(--text);
    outline: none;
    padding: 11px 42px 11px 40px;
    transition: all 0.2s;
    width: 100%;
}

.field-input::placeholder {
    color: var(--text3);
}

.field-input:focus {
    background: rgba(0, 200, 255, 0.04);
    border-color: rgba(0, 200, 255, 0.4);
    box-shadow: 0 0 0 3px rgba(0, 200, 255, 0.07);
}

.field-input.err {
    background: rgba(255, 71, 87, 0.04);
    border-color: rgba(255, 71, 87, 0.45);
}

.field-icon {
    left: 12px;
    pointer-events: none;
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
}

.field-icon svg {
    height: 15px;
    stroke: var(--text3);
    width: 15px;
}

.field-toggle {
    background: none;
    border: none;
    cursor: pointer;
    padding: 2px;
    position: absolute;
    right: 12px;
    top: 50%;
    transform: translateY(-50%);
}

.field-toggle svg {
    display: block;
    height: 15px;
    stroke: var(--text3);
    transition: stroke 0.15s;
    width: 15px;
}

.field-toggle:hover svg {
    stroke: var(--text);
}

.field-error {
    align-items: center;
    color: var(--danger);
    display: none;
    font-size: 11px;
    gap: 4px;
    margin-top: 5px;
}

.field-error.show {
    display: flex;
}

.opts-row {
    align-items: center;
    display: flex;
    justify-content: space-between;
    margin: -4px 0 22px;
}

.remember {
    align-items: center;
    color: var(--text2);
    cursor: pointer;
    display: flex;
    font-size: 12px;
    gap: 7px;
    user-select: none;
}

.remember input {
    display: none;
}

.check-box {
    align-items: center;
    background: var(--glass);
    border: 1px solid var(--border2);
    border-radius: 4px;
    display: flex;
    height: 16px;
    justify-content: center;
    transition: all 0.2s;
    width: 16px;
}

.remember input:checked + .check-box {
    background: linear-gradient(135deg, var(--accent2), var(--accent));
    border-color: var(--accent);
}

.remember input:checked + .check-box::after {
    border-bottom: 2px solid #fff;
    border-right: 2px solid #fff;
    content: "";
    display: block;
    height: 7px;
    transform: rotate(45deg) translateY(-1px);
    width: 4px;
}

.forgot {
    color: var(--accent);
    font-size: 12px;
    opacity: 0.85;
    text-decoration: none;
}

.forgot:hover {
    opacity: 1;
}

.submit-btn {
    align-items: center;
    background: linear-gradient(135deg, var(--accent2), var(--accent));
    border: none;
    border-radius: 10px;
    color: #fff;
    cursor: pointer;
    display: flex;
    font-size: 14px;
    font-weight: 700;
    gap: 9px;
    justify-content: center;
    letter-spacing: 0.05em;
    min-height: 44px;
    padding: 12px;
    transition: all 0.25s;
    width: 100%;
}

.submit-btn:hover {
    box-shadow: 0 4px 24px rgba(0, 200, 255, 0.35), 0 2px 12px rgba(124, 92, 252, 0.3);
    transform: translateY(-1px);
}

.submit-btn.loading,
.submit-btn:disabled {
    cursor: not-allowed;
    opacity: 0.72;
    transform: none;
}

.submit-btn svg {
    height: 15px;
    stroke: currentColor;
    width: 15px;
}

.divider {
    align-items: center;
    color: var(--text3);
    display: flex;
    font-size: 11px;
    gap: 12px;
    letter-spacing: 0.06em;
    margin: 22px 0 18px;
    text-transform: uppercase;
}

.divider::before,
.divider::after {
    background: var(--border);
    content: "";
    flex: 1;
    height: 1px;
}

.oauth-row {
    display: flex;
    gap: 8px;
    margin-bottom: 18px;
}

.oauth-btn {
    align-items: center;
    background: var(--glass);
    border: 1px solid var(--border2);
    border-radius: 9px;
    color: var(--text2);
    cursor: pointer;
    display: flex;
    flex: 1;
    font-size: 12px;
    gap: 7px;
    justify-content: center;
    padding: 9px;
    transition: all 0.2s;
}

.oauth-btn:hover {
    background: var(--glass2);
    color: var(--text);
}

.oauth-btn svg {
    height: 14px;
    width: 14px;
}

.alert {
    align-items: flex-start;
    border-radius: 9px;
    display: none;
    font-size: 12px;
    gap: 9px;
    line-height: 1.5;
    margin-bottom: 18px;
    padding: 10px 13px;
}

.alert.show {
    display: flex;
}

.alert svg {
    flex-shrink: 0;
    height: 14px;
    margin-top: 2px;
    width: 14px;
}

.alert-error {
    background: rgba(255, 71, 87, 0.08);
    border: 1px solid rgba(255, 71, 87, 0.2);
    color: #ff7d89;
}

.alert-success {
    background: rgba(0, 230, 118, 0.07);
    border: 1px solid rgba(0, 230, 118, 0.2);
    color: var(--accent3);
}

.alert-info {
    background: rgba(0, 200, 255, 0.08);
    border: 1px solid rgba(0, 200, 255, 0.22);
    color: #8ce7ff;
}

.card-footer {
    color: var(--text3);
    font-size: 12px;
    line-height: 1.6;
    margin-top: 18px;
    text-align: center;
}

.meta-row {
    align-items: center;
    display: flex;
    gap: 16px;
    justify-content: center;
    margin-top: 20px;
}

.meta-item {
    align-items: center;
    color: var(--text3);
    display: flex;
    font-size: 10px;
    gap: 4px;
    letter-spacing: 0.04em;
}

.meta-item svg {
    height: 10px;
    stroke: var(--text3);
    width: 10px;
}

.panel-hidden {
    display: none;
}

.register-note {
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid var(--border2);
    border-radius: 10px;
    color: var(--text2);
    font-size: 13px;
    line-height: 1.7;
    margin-bottom: 18px;
    padding: 14px;
}

/* Chat */
.chat-page {
    display: flex;
    height: 100vh;
    overflow: hidden;
}

.sidebar {
    background: var(--bg2);
    border-right: 1px solid var(--border);
    display: flex;
    flex-direction: column;
    height: 100vh;
    min-width: 260px;
    overflow: hidden;
    position: relative;
    width: 260px;
    z-index: 5;
}

.sidebar::before {
    background: linear-gradient(90deg, transparent, var(--accent), transparent);
    content: "";
    height: 1px;
    left: 0;
    opacity: 0.4;
    position: absolute;
    right: 0;
    top: 0;
}

.sidebar-header {
    border-bottom: 1px solid var(--border);
    padding: 20px 16px 16px;
}

.sidebar .logo {
    align-items: center;
    display: flex;
    gap: 10px;
    margin-bottom: 12px;
}

.sidebar .logo-icon {
    border-radius: 8px;
    color: #fff;
    height: 32px;
    width: 32px;
}

.sidebar .logo-icon svg {
    height: 16px;
    width: 16px;
}

.logo-text {
    color: #fff;
    font-size: 15px;
    font-weight: 800;
    letter-spacing: 0.08em;
}

.status-text {
    color: var(--text2);
    font-size: 11px;
    letter-spacing: 0.04em;
}

.module-switcher {
    display: grid;
    gap: 6px;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    padding: 12px 12px 0;
}

.module-switcher-item {
    align-items: center;
    background: rgba(255, 255, 255, 0.035);
    border: 1px solid var(--border);
    border-radius: 7px;
    color: var(--text2);
    display: flex;
    font-size: 11px;
    font-weight: 700;
    justify-content: center;
    min-height: 32px;
    text-decoration: none;
    transition: background 0.16s ease, border-color 0.16s ease, color 0.16s ease;
}

.module-switcher-item:hover {
    background: var(--glass2);
    border-color: var(--border2);
    color: var(--text);
}

.module-switcher-item.active {
    background: rgba(0, 200, 255, 0.1);
    border-color: rgba(0, 200, 255, 0.28);
    box-shadow: inset 0 0 0 1px rgba(0, 200, 255, 0.05);
    color: #fff;
}

.module-switcher-item.disabled {
    cursor: not-allowed;
    opacity: 0.46;
    pointer-events: none;
}

.new-chat-btn {
    align-items: center;
    background: linear-gradient(135deg, rgba(124, 92, 252, 0.2), rgba(0, 200, 255, 0.15));
    border: 1px solid rgba(0, 200, 255, 0.25);
    border-radius: 8px;
    color: var(--text);
    cursor: pointer;
    display: flex;
    font-size: 12px;
    font-weight: 700;
    gap: 8px;
    letter-spacing: 0.04em;
    margin: 14px 16px 0;
    padding: 9px 14px;
    transition: all 0.2s;
    width: calc(100% - 32px);
}

.new-chat-btn:hover {
    background: linear-gradient(135deg, rgba(124, 92, 252, 0.35), rgba(0, 200, 255, 0.25));
    border-color: rgba(0, 200, 255, 0.45);
    color: #fff;
}

.new-chat-btn svg {
    height: 14px;
    stroke: var(--accent);
    width: 14px;
}

.section-label {
    color: var(--text3);
    font-size: 10px;
    font-weight: 700;
    letter-spacing: 0.12em;
    padding: 16px 16px 8px;
    text-transform: uppercase;
}

.chat-list {
    flex: 1;
    overflow-y: auto;
    padding: 0 8px;
}

.chat-item {
    align-items: center;
    background: transparent;
    border: 1px solid transparent;
    border-radius: 7px;
    color: inherit;
    cursor: pointer;
    display: flex;
    gap: 9px;
    margin-bottom: 2px;
    padding: 9px 10px;
    position: relative;
    text-align: left;
    transition: all 0.15s;
    width: 100%;
}

.chat-item:hover {
    background: var(--glass2);
    border-color: var(--border);
}

.chat-item.active {
    background: rgba(0, 200, 255, 0.08);
    border-color: rgba(0, 200, 255, 0.2);
}

.chat-item.active::before {
    background: var(--accent);
    border-radius: 0 2px 2px 0;
    content: "";
    height: 60%;
    left: 0;
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 2px;
}

.chat-icon {
    align-items: center;
    background: var(--glass2);
    border-radius: 6px;
    color: var(--accent);
    display: flex;
    flex-shrink: 0;
    font-size: 10px;
    font-weight: 800;
    height: 28px;
    justify-content: center;
    width: 28px;
}

.chat-info {
    flex: 1;
    min-width: 0;
    overflow: hidden;
}

.chat-name {
    color: var(--text);
    font-size: 12px;
    font-weight: 600;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.chat-preview {
    color: var(--text3);
    font-size: 11px;
    margin-top: 1px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.chat-time {
    color: var(--text3);
    flex-shrink: 0;
    font-size: 10px;
}

.sidebar-empty,
.sidebar-error {
    color: var(--text3);
    font-size: 12px;
    line-height: 1.6;
    padding: 12px 10px;
}

.sidebar-error {
    color: #ff7d89;
}

.sidebar-footer {
    border-top: 1px solid var(--border);
    padding: 12px 16px;
}

.user-row {
    align-items: center;
    display: flex;
    gap: 9px;
}

.user-avatar {
    align-items: center;
    background: linear-gradient(135deg, var(--accent2), var(--accent));
    border-radius: 50%;
    color: #fff;
    display: flex;
    flex-shrink: 0;
    font-size: 11px;
    font-weight: 800;
    height: 30px;
    justify-content: center;
    width: 30px;
}

.user-name {
    color: var(--text);
    font-size: 12px;
    font-weight: 600;
}

.user-role {
    color: var(--text3);
    font-size: 10px;
}

.logout-link {
    background: transparent;
    border: 0;
    color: var(--text3);
    cursor: pointer;
    display: inline-block;
    font-size: 10px;
    margin-top: 3px;
    padding: 0;
    text-decoration: none;
}

.logout-link:hover {
    color: var(--accent);
}

.main {
    background: var(--bg);
    display: flex;
    flex: 1;
    flex-direction: column;
    height: 100vh;
    min-width: 0;
    position: relative;
}

.main::before {
    background-image:
        linear-gradient(rgba(0, 200, 255, 0.02) 1px, transparent 1px),
        linear-gradient(90deg, rgba(0, 200, 255, 0.02) 1px, transparent 1px);
    background-size: 40px 40px;
    content: "";
    inset: 0;
    pointer-events: none;
    position: fixed;
    z-index: 0;
}

.main > * {
    position: relative;
    z-index: 1;
}

.main-header {
    align-items: center;
    background: rgba(8, 10, 16, 0.82);
    border-bottom: 1px solid var(--border);
    display: flex;
    flex-shrink: 0;
    height: 56px;
    justify-content: space-between;
    overflow: visible;
    padding: 0 24px;
    z-index: 60;
}

.header-left {
    align-items: center;
    display: flex;
    gap: 12px;
    min-width: 0;
}

.header-title {
    color: #fff;
    font-size: 14px;
    font-weight: 700;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.header-sub {
    color: var(--text3);
    font-size: 11px;
    margin-top: 2px;
}

.badges {
    align-items: center;
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    justify-content: flex-end;
}

.chat-actions {
    flex-wrap: nowrap;
    position: relative;
    z-index: 70;
}

.chat-menu {
    position: relative;
    z-index: 80;
}

.chat-menu-button {
    align-items: center;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border2);
    border-radius: 7px;
    color: var(--text2);
    cursor: pointer;
    display: flex;
    font-size: 11px;
    font-weight: 700;
    gap: 6px;
    height: 28px;
    letter-spacing: 0.04em;
    padding: 0 10px;
}

.chat-menu-button:hover,
.chat-menu.open .chat-menu-button {
    background: rgba(0, 200, 255, 0.08);
    border-color: rgba(0, 200, 255, 0.25);
    color: var(--text);
}

.chat-menu-button svg {
    fill: none;
    height: 13px;
    stroke: currentColor;
    stroke-linecap: round;
    stroke-linejoin: round;
    stroke-width: 2;
    width: 13px;
}

.chat-menu-panel {
    background: #111725;
    border: 1px solid var(--border2);
    border-radius: 8px;
    box-shadow: 0 16px 40px rgba(0, 0, 0, 0.36);
    display: none;
    min-width: 170px;
    padding: 6px;
    position: absolute;
    right: 0;
    top: 34px;
    z-index: 1000;
}

.chat-menu.open .chat-menu-panel {
    display: block;
}

.chat-menu-panel button {
    background: transparent;
    border: 1px solid transparent;
    border-radius: 6px;
    color: var(--text2);
    cursor: pointer;
    display: block;
    font-size: 12px;
    padding: 8px 9px;
    text-align: left;
    width: 100%;
}

.chat-menu-panel button:hover {
    background: var(--glass2);
    color: var(--text);
}

.chat-menu-panel .danger-action {
    color: #ff9aa4;
}

.chat-menu-panel .danger-action:hover {
    background: rgba(255, 71, 87, 0.08);
    border-color: rgba(255, 71, 87, 0.16);
    color: #ffc2c7;
}

.mobile-menu-btn {
    align-items: center;
    background: var(--glass2);
    border: 1px solid var(--border);
    border-radius: 7px;
    color: var(--text2);
    cursor: pointer;
    display: none;
    height: 32px;
    justify-content: center;
    width: 32px;
}

.chat-area {
    display: flex;
    flex: 1;
    flex-direction: column;
    gap: 20px;
    overflow-y: auto;
    padding: 24px;
    z-index: 1;
}

.msg-group {
    animation: msgIn 0.25s ease forwards;
    display: flex;
    gap: 12px;
    opacity: 0;
    transform: translateY(8px);
}

@keyframes msgIn {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.msg-group.user {
    flex-direction: row-reverse;
}

.msg-avatar {
    align-items: center;
    border-radius: 8px;
    display: flex;
    flex-shrink: 0;
    font-size: 12px;
    font-weight: 800;
    height: 32px;
    justify-content: center;
    width: 32px;
}

.msg-avatar.ai {
    background: linear-gradient(135deg, var(--accent2), var(--accent));
    color: #fff;
}

.msg-avatar.user-av {
    background: linear-gradient(135deg, #1e3a5f, #2d5f8e);
    border: 1px solid rgba(0, 200, 255, 0.2);
    color: var(--accent);
}

.msg-body {
    display: flex;
    flex-direction: column;
    gap: 4px;
    max-width: min(72%, 780px);
}

.msg-group.user .msg-body {
    align-items: flex-end;
}

.msg-bubble {
    border-radius: 12px;
    font-size: 13.5px;
    line-height: 1.65;
    overflow-wrap: anywhere;
    padding: 12px 16px;
    position: relative;
    white-space: normal;
}

.msg-bubble p {
    margin: 0 0 9px;
}

.msg-bubble p:last-child,
.msg-bubble ul:last-child,
.msg-bubble ol:last-child,
.msg-bubble blockquote:last-child,
.msg-bubble pre:last-child {
    margin-bottom: 0;
}

.msg-bubble ul,
.msg-bubble ol {
    margin: 6px 0 10px 18px;
    padding-left: 12px;
}

.msg-bubble li {
    margin: 3px 0;
}

.msg-bubble blockquote {
    border-left: 2px solid rgba(0, 200, 255, 0.35);
    color: #b9c6dc;
    margin: 8px 0;
    padding: 3px 0 3px 10px;
}

.msg-bubble blockquote blockquote {
    border-left-color: rgba(124, 92, 252, 0.42);
    margin-left: 8px;
}

.msg-bubble a {
    color: #77dcff;
    text-decoration: none;
}

.msg-bubble a:hover {
    text-decoration: underline;
}

.msg-bubble .md-heading {
    color: #fff;
    font-weight: 800;
    line-height: 1.35;
    margin: 10px 0 6px;
}

.msg-bubble .md-heading:first-child {
    margin-top: 0;
}

.md-heading-1 {
    font-size: 16px;
}

.md-heading-2 {
    font-size: 15px;
}

.md-heading-3 {
    font-size: 14px;
}

.md-heading-4,
.md-heading-5,
.md-heading-6 {
    font-size: 13px;
}

.md-task-list {
    list-style: none;
    margin-left: 0;
    padding-left: 0;
}

.md-task-item {
    align-items: center;
    display: flex;
    gap: 7px;
}

.md-task-item input {
    accent-color: var(--accent);
}

.msg-bubble hr {
    border: 0;
    border-top: 1px solid var(--border2);
    margin: 12px 0;
}

.md-table-wrap {
    margin: 10px 0;
    max-width: 100%;
    overflow-x: auto;
}

.md-table-wrap table {
    border-collapse: collapse;
    min-width: 100%;
}

.md-table-wrap th,
.md-table-wrap td {
    border: 1px solid var(--border2);
    padding: 6px 8px;
}

.md-table-wrap th {
    background: rgba(255, 255, 255, 0.05);
    color: #fff;
    font-weight: 800;
}

.md-footnotes {
    border-top: 1px solid var(--border2);
    color: var(--text2);
    font-size: 11px;
    line-height: 1.55;
    margin-top: 12px;
    padding-top: 8px;
}

.md-math-inline {
    color: #c4f1ff;
    font-family: "Cascadia Code", "SFMono-Regular", Consolas, monospace;
}

.md-admonition {
    background: rgba(0, 200, 255, 0.07);
    border: 1px solid rgba(0, 200, 255, 0.18);
    border-radius: 8px;
    margin: 10px 0;
    padding: 9px 11px;
}

.md-admonition strong {
    color: #8ce7ff;
    display: block;
    font-size: 10px;
    letter-spacing: 0.08em;
    margin-bottom: 5px;
}

.md-admonition-warning {
    background: rgba(255, 176, 32, 0.08);
    border-color: rgba(255, 176, 32, 0.24);
}

.md-admonition-warning strong {
    color: #ffd59a;
}

.msg-bubble dl {
    margin: 8px 0;
}

.msg-bubble dt {
    color: #fff;
    font-weight: 800;
}

.msg-bubble dd {
    color: var(--text2);
    margin: 3px 0 8px 14px;
}

.msg-bubble abbr {
    border-bottom: 1px dotted var(--accent);
    cursor: help;
    text-decoration: none;
}

.md-block-label {
    color: var(--accent);
    display: block;
    font-size: 10px;
    font-weight: 800;
    letter-spacing: 0.08em;
    margin-bottom: 6px;
    text-transform: uppercase;
}

.md-inline-code,
.md-code-block {
    background: rgba(0, 0, 0, 0.28);
    border: 1px solid rgba(255, 255, 255, 0.09);
    font-family: "Cascadia Code", "SFMono-Regular", Consolas, monospace;
}

.md-inline-code {
    border-radius: 5px;
    color: #c4f1ff;
    font-size: 0.92em;
    padding: 1px 5px;
}

.md-code-block {
    border-radius: 8px;
    color: #d7e3f4;
    line-height: 1.55;
    margin: 9px 0 10px;
    max-width: 100%;
    overflow-x: auto;
    padding: 10px 12px;
    white-space: pre;
}

.reasoning-toggle {
    background: rgba(124, 92, 252, 0.08);
    border: 1px solid rgba(124, 92, 252, 0.22);
    border-radius: 8px;
    color: var(--text2);
    max-width: 100%;
    overflow: hidden;
}

.reasoning-toggle summary {
    cursor: pointer;
    font-size: 11px;
    font-weight: 800;
    letter-spacing: 0.05em;
    list-style: none;
    padding: 7px 10px;
    text-transform: uppercase;
}

.reasoning-toggle summary::-webkit-details-marker {
    display: none;
}

.reasoning-toggle summary::before {
    color: var(--accent2);
    content: "+";
    display: inline-block;
    margin-right: 7px;
    width: 10px;
}

.reasoning-toggle[open] summary::before {
    content: "-";
}

.reasoning-content {
    border-top: 1px solid rgba(124, 92, 252, 0.18);
    color: #b9c2d8;
    font-size: 12px;
    line-height: 1.65;
    max-height: 260px;
    overflow-y: auto;
    padding: 9px 10px 10px;
    white-space: normal;
}

.msg-group.ai .msg-bubble {
    background: var(--ai-msg);
    border: 1px solid var(--border2);
    border-top-left-radius: 4px;
    color: var(--text);
}

.msg-group.user .msg-bubble {
    background: var(--user-msg);
    border: 1px solid rgba(0, 200, 255, 0.15);
    border-top-right-radius: 4px;
    color: #e8eeff;
}

.msg-group.error .msg-bubble {
    background: rgba(255, 71, 87, 0.08);
    border: 1px solid rgba(255, 71, 87, 0.22);
    color: #ffb1b8;
}

.msg-meta {
    align-items: center;
    color: var(--text3);
    display: flex;
    flex-wrap: wrap;
    font-size: 10px;
    gap: 6px;
}

.msg-role {
    font-weight: 800;
    letter-spacing: 0.04em;
}

.msg-copy-btn {
    align-items: center;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 6px;
    color: var(--text3);
    cursor: pointer;
    display: inline-flex;
    height: 20px;
    justify-content: center;
    padding: 0;
    transition: border-color 0.18s ease, color 0.18s ease, background 0.18s ease;
    width: 20px;
}

.msg-copy-btn:hover,
.msg-copy-btn:focus-visible {
    background: rgba(90, 211, 255, 0.12);
    border-color: rgba(90, 211, 255, 0.35);
    color: var(--accent2);
    outline: none;
}

.msg-copy-btn svg {
    fill: none;
    height: 12px;
    stroke: currentColor;
    stroke-linecap: round;
    stroke-linejoin: round;
    stroke-width: 2;
    width: 12px;
}

.thinking-bubble {
    align-items: center;
    background: var(--ai-msg);
    border: 1px solid var(--border2);
    border-radius: 12px;
    border-top-left-radius: 4px;
    display: flex;
    gap: 10px;
    padding: 12px 16px;
}

.thinking-dots {
    display: flex;
    gap: 4px;
}

.thinking-dots span {
    animation: thinking 0.9s ease infinite;
    background: var(--accent);
    border-radius: 50%;
    height: 6px;
    opacity: 0.6;
    width: 6px;
}

.thinking-dots span:nth-child(2) {
    animation-delay: 0.15s;
    background: var(--accent2);
}

.thinking-dots span:nth-child(3) {
    animation-delay: 0.3s;
    background: var(--accent3);
}

@keyframes thinking {
    0%,
    80%,
    100% {
        opacity: 0.45;
        transform: scale(0.7);
    }

    40% {
        opacity: 1;
        transform: scale(1);
    }
}

.thinking-text {
    color: var(--text2);
    font-size: 12px;
    letter-spacing: 0.04em;
}

.recovery-panel {
    align-items: flex-start;
    background: rgba(255, 176, 32, 0.07);
    border: 1px solid rgba(255, 176, 32, 0.24);
    border-radius: 10px;
    color: #ffd59a;
    display: flex;
    gap: 12px;
    line-height: 1.55;
    max-width: 760px;
    padding: 12px 14px;
}

.recovery-panel strong {
    color: #ffe6bd;
    display: block;
    font-size: 12px;
    letter-spacing: 0.04em;
    margin-bottom: 2px;
    text-transform: uppercase;
}

.recovery-panel p {
    color: #d8bf9a;
    font-size: 12px;
}

.recovery-panel button {
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid rgba(255, 176, 32, 0.28);
    border-radius: 7px;
    color: #ffe0ad;
    cursor: pointer;
    flex-shrink: 0;
    font-size: 12px;
    font-weight: 700;
    padding: 8px 10px;
}

.recovery-panel button:hover {
    background: rgba(255, 176, 32, 0.12);
    color: #fff1d7;
}

.recovery-panel button:disabled {
    cursor: not-allowed;
    opacity: 0.65;
}

.welcome {
    align-items: center;
    color: var(--text2);
    display: flex;
    flex: 1;
    flex-direction: column;
    gap: 16px;
    justify-content: center;
    padding: 40px 20px;
    text-align: center;
}

.welcome-icon {
    align-items: center;
    background: linear-gradient(135deg, var(--accent2), var(--accent));
    border-radius: 16px;
    color: #fff;
    display: flex;
    font-size: 24px;
    font-weight: 800;
    height: 64px;
    justify-content: center;
    width: 64px;
}

.welcome h2 {
    color: #fff;
    font-size: 20px;
    font-weight: 800;
    letter-spacing: 0.03em;
}

.welcome p {
    line-height: 1.7;
    max-width: 440px;
}

.input-area {
    background: var(--bg);
    border-top: 1px solid var(--border);
    flex-shrink: 0;
    padding: 16px 24px 20px;
}

.model-row {
    align-items: center;
    display: flex;
    gap: 8px;
    margin-bottom: 10px;
}

.model-select {
    appearance: none;
    background: var(--glass);
    border: 1px solid var(--border2);
    border-radius: 6px;
    color: var(--text2);
    cursor: pointer;
    font-size: 11px;
    letter-spacing: 0.03em;
    max-width: 100%;
    padding: 5px 10px;
}

.model-indicator {
    align-items: center;
    color: var(--text3);
    display: flex;
    font-size: 11px;
    gap: 5px;
}

.model-indicator::before {
    background: var(--success);
    border-radius: 50%;
    content: "";
    height: 5px;
    width: 5px;
}

.input-wrapper {
    align-items: flex-end;
    background: var(--glass2);
    border: 1px solid var(--border2);
    border-radius: 12px;
    display: flex;
    gap: 0;
    padding: 10px 12px 10px 16px;
    transition: border-color 0.2s;
}

.input-wrapper:focus-within {
    border-color: rgba(0, 200, 255, 0.35);
    box-shadow: 0 0 0 3px rgba(0, 200, 255, 0.06);
}

.msg-input {
    background: transparent;
    border: none;
    color: var(--text);
    flex: 1;
    font-size: 13.5px;
    line-height: 1.6;
    max-height: 120px;
    min-height: 22px;
    outline: none;
    resize: none;
}

.msg-input::placeholder {
    color: var(--text3);
}

.input-actions {
    align-items: center;
    display: flex;
    flex-shrink: 0;
    gap: 6px;
    padding-left: 8px;
}

.input-btn {
    align-items: center;
    background: var(--glass);
    border: 1px solid var(--border2);
    border-radius: 8px;
    color: var(--text2);
    cursor: not-allowed;
    display: flex;
    height: 34px;
    justify-content: center;
    opacity: 0.65;
    width: 34px;
}

.send-btn {
    align-items: center;
    background: linear-gradient(135deg, var(--accent2), var(--accent));
    border: none;
    border-radius: 9px;
    box-shadow: 0 2px 12px rgba(0, 200, 255, 0.25);
    cursor: pointer;
    display: flex;
    flex-shrink: 0;
    height: 36px;
    justify-content: center;
    transition: all 0.2s;
    width: 36px;
}

.send-btn:hover {
    box-shadow: 0 4px 18px rgba(0, 200, 255, 0.4);
    transform: scale(1.05);
}

.send-btn.loading,
.send-btn:disabled {
    cursor: not-allowed;
    opacity: 0.7;
    transform: none;
}

.send-btn svg {
    fill: none;
    height: 15px;
    stroke: #fff;
    width: 15px;
}

.hint-row {
    display: flex;
    justify-content: center;
    margin-top: 10px;
}

.hint-text {
    color: var(--text3);
    font-size: 11px;
    letter-spacing: 0.02em;
    text-align: center;
}

.toast {
    background: #1a1f2e;
    border: 1px solid var(--border2);
    border-radius: 9px;
    bottom: 24px;
    color: var(--text);
    font-size: 12px;
    line-height: 1.5;
    max-width: 320px;
    opacity: 0;
    padding: 10px 16px;
    pointer-events: none;
    position: fixed;
    right: 24px;
    transform: translateY(10px);
    transition: all 0.25s;
    z-index: 999;
}

.toast.show {
    opacity: 1;
    transform: translateY(0);
}

@media (max-width: 760px) {
    .sidebar {
        bottom: 0;
        left: -260px;
        position: fixed;
        top: 0;
        transition: left 0.3s;
        z-index: 100;
    }

    .sidebar.open {
        left: 0;
    }

    .mobile-menu-btn {
        display: flex;
    }

    .main-header {
        padding: 0 14px;
    }

    .badges {
        gap: 4px;
    }

    .chat-area {
        padding: 18px 14px;
    }

    .msg-body {
        max-width: 86%;
    }

    .input-area {
        padding: 14px;
    }

    .meta-row,
    .oauth-row {
        flex-wrap: wrap;
    }
}