/* Единая визуальная система приложения: UTF-8 без BOM. */
:root {
    --app-bg: #0d0917;
    --app-bg-elevated: #151023;
    --app-surface: rgba(24, 17, 39, 0.88);
    --app-surface-solid: #1b142b;
    --app-surface-soft: rgba(255, 255, 255, 0.055);
    --app-border: rgba(218, 205, 255, 0.13);
    --app-border-strong: rgba(190, 164, 255, 0.28);
    --app-text: #f7f4ff;
    --app-muted: #aaa2bd;
    --app-accent: #8b5cf6;
    --app-accent-strong: #7447e8;
    --app-accent-soft: rgba(139, 92, 246, 0.2);
    --app-indigo: #6574d9;
    --app-warning: #f3bd58;
    --app-danger: #ff818f;
    --app-success: #72d7ae;
    --app-radius-sm: 10px;
    --app-radius: 16px;
    --app-radius-lg: 22px;
    --app-shadow: 0 24px 70px rgba(3, 1, 10, 0.34);

    --chat-surface: var(--app-surface);
    --chat-surface-strong: rgba(20, 13, 33, 0.98);
    --chat-border: var(--app-border);
    --chat-soft: var(--app-surface-soft);
    --chat-text: var(--app-text);
    --chat-text-muted: var(--app-muted);
    --chat-accent: #a785ff;
    --chat-accent-soft: var(--app-accent-soft);
    --chat-danger: var(--app-danger);
    --chat-warning: var(--app-warning);

    --acc-surface: var(--app-surface);
    --acc-surface-strong: rgba(20, 13, 33, 0.98);
    --acc-border: var(--app-border);
    --acc-soft: var(--app-surface-soft);
    --acc-text: var(--app-text);
    --acc-muted: var(--app-muted);
    --acc-accent: #a785ff;
    --acc-accent-soft: var(--app-accent-soft);
    --acc-danger: var(--app-danger);
}

html {
    color-scheme: dark;
    background: var(--app-bg);
}

body {
    color: var(--app-text);
    background: var(--app-bg);
    font-family: Inter, Manrope, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    letter-spacing: -0.01em;
}

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

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

:focus-visible {
    outline: 2px solid #a98bff;
    outline-offset: 2px;
}

::selection {
    color: #fff;
    background: rgba(139, 92, 246, 0.55);
}

* {
    scrollbar-width: thin;
    scrollbar-color: rgba(167, 133, 255, 0.45) transparent;
}

*::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

*::-webkit-scrollbar-thumb {
    border: 2px solid transparent;
    border-radius: 999px;
    background: rgba(167, 133, 255, 0.45);
    background-clip: padding-box;
}

.background-fixed {
    background-image:
        radial-gradient(circle at 9% 14%, rgba(104, 58, 165, 0.22), transparent 30%),
        radial-gradient(circle at 92% 78%, rgba(79, 58, 153, 0.15), transparent 34%),
        linear-gradient(145deg, #10091a 0%, #0c0814 52%, #130b20 100%);
    background-color: var(--app-bg);
}

/* Боковая навигация внутренних страниц */
.chat-page,
.account-page,
.admin-page,
.notes-page {
    box-sizing: border-box;
    padding-left: 100px;
}

.app-sidebar {
    position: fixed;
    z-index: 110;
    top: 22px;
    bottom: 22px;
    left: 22px;
    width: 68px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 28px;
    padding: 14px 9px;
    border: 1px solid var(--app-border);
    border-radius: var(--app-radius-lg);
    background: rgba(20, 14, 33, 0.88);
    box-shadow: var(--app-shadow);
    backdrop-filter: blur(18px);
    -webkit-backdrop-filter: blur(18px);
}

.app-sidebar-logo {
    width: 46px;
    height: 46px;
    display: grid;
    place-items: center;
    border: 1px solid var(--app-border);
    border-radius: 15px;
    background: rgba(255, 255, 255, 0.045);
}

.app-sidebar-logo img {
    width: 34px;
    height: 34px;
    object-fit: contain;
}

.app-sidebar-nav {
    width: 100%;
    display: grid;
    gap: 10px;
}

.app-sidebar-link {
    position: relative;
    width: 48px;
    height: 48px;
    display: grid;
    place-items: center;
    border: 1px solid transparent;
    border-radius: 14px;
    color: #9d95b1;
    text-decoration: none;
    transition: color 160ms ease, background 160ms ease, border-color 160ms ease;
}

.app-sidebar-link:hover,
.app-sidebar-link.active {
    color: #fff;
    border-color: rgba(167, 133, 255, 0.2);
    background: rgba(139, 92, 246, 0.22);
}

.app-sidebar-link svg {
    width: 23px;
    height: 23px;
    fill: none;
    stroke: currentColor;
    stroke-width: 1.7;
    stroke-linecap: round;
    stroke-linejoin: round;
}

.app-sidebar-link span {
    position: absolute;
    left: calc(100% + 11px);
    padding: 6px 9px;
    border: 1px solid var(--app-border);
    border-radius: 8px;
    color: var(--app-text);
    background: var(--app-surface-solid);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.3);
    font-size: 0.75rem;
    white-space: nowrap;
    opacity: 0;
    pointer-events: none;
    transform: translateX(-4px);
    transition: opacity 140ms ease, transform 140ms ease;
}

.app-sidebar-link:hover span,
.app-sidebar-link:focus-visible span {
    opacity: 1;
    transform: translateX(0);
}

/* Чат */
.chat-shell {
    width: min(1280px, 100%);
    padding: 22px 26px;
    gap: 0;
}

.chat-topbar,
.chat-stream,
.chat-footer {
    border-color: var(--app-border);
    background: rgba(18, 12, 31, 0.84);
    box-shadow: none;
}

.chat-topbar {
    min-height: 74px;
    padding: 13px 18px;
    border-radius: var(--app-radius-lg) var(--app-radius-lg) 0 0;
    box-shadow: var(--app-shadow);
}

.chat-topbar .brand {
    font-size: 1.02rem;
    font-weight: 650;
}

.chat-topbar .brand img, .account-topbar .brand img {
    width: 38px;
    height: 38px;
    padding: 4px;
    border: 1px solid var(--app-border);
    border-radius: 13px;
    background: #000;
}

.plan-chip {
    padding: 8px 14px;
    color: #cbc4d8;
    background: rgba(255, 255, 255, 0.055);
    border-color: var(--app-border);
    font-size: 0.86rem;
}

.menu-button {
    width: 42px;
    height: 42px;
    color: #dcd5eb;
    background: rgba(255, 255, 255, 0.055);
    border-color: var(--app-border);
}

.menu-button:hover {
    border-color: var(--app-border-strong);
    background: rgba(139, 92, 246, 0.15);
}

.menu-dropdown {
    border-color: var(--app-border);
    background: rgba(24, 17, 39, 0.98);
}

.chat-stream {
    padding: 28px 26px;
    border-top: 0;
    border-bottom: 0;
    border-radius: 0;
    background: rgba(14, 9, 24, 0.76);
}

.message-row {
    align-items: flex-end;
    gap: 10px;
    margin-bottom: 18px;
}

.message-row.assistant::before,
.message-row.alert::before {
    content: "";
    width: 32px;
    height: 32px;
    flex: 0 0 32px;
    border: 1px solid var(--app-border);
    border-radius: 50%;
    background: rgba(24, 17, 39, 0.95) url('../images/logo.png') center / 25px no-repeat;
}

.message-bubble {
    max-width: min(74%, 760px);
    padding: 13px 16px 10px;
    border-color: var(--app-border);
    border-radius: 17px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.14);
}

.bubble-assistant {
    background: linear-gradient(145deg, rgba(43, 32, 59, 0.92), rgba(35, 27, 49, 0.9));
}

.bubble-user {
    border-color: rgba(132, 143, 231, 0.34);
    background: linear-gradient(145deg, rgba(71, 76, 145, 0.9), rgba(48, 51, 104, 0.92));
}

.bubble-clarify {
    border-color: rgba(167, 133, 255, 0.5);
    background: rgba(139, 92, 246, 0.14);
}

.bubble-timer {
    border-color: rgba(243, 189, 88, 0.74);
    background: linear-gradient(145deg, rgba(54, 39, 48, 0.96), rgba(37, 28, 42, 0.95));
    box-shadow: none;
}

.message-text {
    color: #FFF;
    font-size: 0.95rem;
    line-height: 1.55;
}

.message-time {
    margin-top: 7px;
    color: #a59db6;
    font-size: 0.7rem;
}

.timer-message-label {
    color: var(--app-warning);
}

.chat-footer {
    display: grid;
    grid-template-columns: 1fr;
    gap: 10px;
    padding: 10px 16px 14px;
    border-radius: 0 0 var(--app-radius-lg) var(--app-radius-lg);
    box-shadow: 0 28px 60px rgba(3, 1, 10, 0.22);
}

.composer-modebar {
    display: flex;
    align-items: end;
    justify-content: space-between;
    gap: 16px;
}

.mode-control {
    display: grid;
    gap: 5px;
}

.input-mode-root {
    justify-items: end;
}

.mode-control-label {
    padding: 0 3px;
    color: #91899f;
    font-size: 0.7rem;
    font-weight: 600;
    letter-spacing: 0.04em;
    text-transform: uppercase;
}

.mode-segments {
    display: inline-flex;
    padding: 3px;
    border: 1px solid var(--app-border);
    border-radius: 12px;
    background: rgba(255, 255, 255, 0.025);
}

.mode-segment {
    min-height: 34px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 7px;
    padding: 6px 12px;
    border: 0;
    border-radius: 9px;
    color: #aaa2b9;
    background: transparent;
    cursor: pointer;
    font-size: 0.8rem;
    font-weight: 550;
    transition: color 150ms ease, background 150ms ease, box-shadow 150ms ease;
}

.mode-segment:hover:not(:disabled) {
    color: #eee9f8;
    background: rgba(255, 255, 255, 0.055);
}

.mode-segment.is-active {
    color: #fff;
    background: linear-gradient(135deg, rgba(131, 82, 232, 0.96), rgba(105, 66, 201, 0.96));
    box-shadow: 0 6px 16px rgba(70, 38, 136, 0.3);
}

.mode-segment:disabled {
    cursor: not-allowed;
    opacity: 0.38;
}

.mode-segment > svg,
.response-mode-icon {
    width: 17px;
    height: 17px;
    flex: 0 0 17px;
}

.mode-segment > svg {
    fill: none;
    stroke: currentColor;
    stroke-width: 1.8;
    stroke-linecap: round;
    stroke-linejoin: round;
}

.response-mode-icon svg {
    fill: none;
    stroke: currentColor;
    stroke-width: 1.8;
    stroke-linecap: round;
    stroke-linejoin: round;
}

.composer-row {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 54px;
    align-items: stretch;
    gap: 12px;
}

.support-composer {
    grid-template-columns: minmax(0, 1fr) 54px;
    align-items: stretch;
}

.composer-center {
    min-height: 70px;
}

.composer-center textarea,
.voice-panel {
    border-color: var(--app-border);
    border-radius: 15px;
    background: rgba(255, 255, 255, 0.055);
}

.composer-center textarea {
    padding: 14px 16px;
    color: var(--app-text);
}

.composer-center textarea::placeholder {
    color: #837b92;
}

.composer-center textarea:focus {
    border-color: rgba(167, 133, 255, 0.52);
    box-shadow: 0 0 0 3px rgba(139, 92, 246, 0.1);
}

.send-controls {
    display: flex;
    align-items: center;
    justify-content: center;
}

.send-primary {
    width: 52px;
    height: 52px;
    border: 0;
    border-radius: 50%;
    color: #fff;
    background: linear-gradient(145deg, #8d5bf1, #6e45cf);
    box-shadow: 0 10px 24px rgba(78, 43, 151, 0.36);
}

.send-primary:hover:not(:disabled) {
    transform: translateY(-1px);
    background: linear-gradient(145deg, #9b6aff, #7950dc);
}

.send-primary svg {
    width: 23px;
    height: 23px;
    fill: none;
    stroke: currentColor;
    stroke-width: 1.8;
    stroke-linecap: round;
    stroke-linejoin: round;
}

.attachment-btn {
    width: 52px;
    height: 52px;
    align-self: center;
    border: 1px solid var(--app-border);
    border-radius: 14px;
    color: #d8d1e7;
    background: var(--app-surface-soft);
}

.attachment-btn svg {
    width: 22px;
    fill: none;
    stroke: currentColor;
    stroke-width: 1.8;
    stroke-linecap: round;
    stroke-linejoin: round;
}

/* Личный кабинет и платежи */
.account-shell,
.admin-shell {
    width: min(1280px, 100%);
    max-width: 1280px;
    margin: 0 auto;
    padding: 22px 26px 30px;
}

.account-topbar,
.admin-topbar,
.hero-card,
.panel-block,
.metric-card,
.chart-card,
.plan-card,
.admin-panel,
.admin-metrics article,
.payment-hero > div {
    border-color: var(--app-border);
    color: var(--app-text);
    background: var(--app-surface);
    box-shadow: none;
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
}

.account-topbar,
.admin-topbar {
    min-height: 70px;
    padding: 12px 16px;
    border-radius: var(--app-radius-lg);
    box-shadow: var(--app-shadow);
}

.hero-card {
    padding: 22px;
    border-radius: var(--app-radius-lg);
    background:
        radial-gradient(circle at 96% 0%, rgba(139, 92, 246, 0.15), transparent 36%),
        var(--app-surface);
}

.hero-chips {
    gap: 12px;
}

.chip,
.list-row,
.token-selector,
.summary-meta,
.summary-total,
.detail-list,
.feature-list {
    border-color: var(--app-border);
    background: rgba(255, 255, 255, 0.035);
}

.account-tabs,
.admin-tabs {
    gap: 7px;
    padding: 4px;
    border: 1px solid var(--app-border);
    border-radius: 14px;
    background: rgba(19, 13, 31, 0.7);
}

.tab-btn,
.admin-tabs button {
    border: 0;
    border-radius: 10px;
    color: var(--app-muted);
    background: transparent;
}

.tab-btn.active,
.admin-tabs button.active {
    color: #fff;
    background: var(--app-accent-soft);
    box-shadow: inset 0 0 0 1px rgba(167, 133, 255, 0.24);
}

.panel-block,
.metric-card,
.chart-card,
.plan-card,
.admin-panel {
    padding: 20px;
    border-radius: var(--app-radius);
}

.primary-btn,
.auth-submit,
.btn-premium {
    border: 0;
    color: #fff;
    background: linear-gradient(135deg, var(--app-accent), var(--app-accent-strong));
    box-shadow: 0 9px 22px rgba(76, 42, 145, 0.25);
}

.ghost-btn,
.soft-btn,
.danger-btn,
.account-topbar a,
.account-topbar button,
.admin-topbar nav a,
.admin-topbar button,
.admin-heading button {
    border-color: var(--app-border);
    color: #d8d1e7;
    /* background: rgba(255, 255, 255, 0.055); */
}

.danger-btn {
    color: #ffadb6;
}

.field input,
.field select,
.field textarea,
.user-search input,
.statistics-filter input,
.statistics-filter select,
.detail-card input,
.detail-card select,
.reply-form textarea {
    border-color: var(--app-border);
    color: var(--app-text);
    background: rgba(255, 255, 255, 0.05);
}

.progress-fill {
    background: linear-gradient(90deg, #8b5cf6, #7988e8);
}

.status-pill.active,
.summary-badge {
    color: #cbbcff;
    background: rgba(139, 92, 246, 0.18);
}

.payment-hero {
    gap: 14px;
}

.payment-hero > div {
    padding: 22px;
    border: 1px solid var(--app-border);
    border-radius: var(--app-radius-lg);
}

.hero-price-card {
    border-color: rgba(167, 133, 255, 0.32);
    background: radial-gradient(circle at top left, rgba(139, 92, 246, 0.2), transparent 55%), var(--app-surface) !important;
}

.eyebrow,
.feature-mark {
    color: #b79cff;
}

.token-pack {
    border-color: var(--app-border);
    color: var(--app-text);
    background: rgba(255, 255, 255, 0.035);
}

.token-pack:hover,
.token-pack.active {
    border-color: rgba(167, 133, 255, 0.5);
    background: rgba(139, 92, 246, 0.15);
}

/* Админка переводится из светлой темы в общую темную. */
.admin-page {
    color: var(--app-text);
}

.admin-shell {
    margin-top: 0;
}

.admin-metrics {
    gap: 12px;
}

.admin-metrics span,
.statistics-grid span,
.muted,
.empty-dialog,
.detail-card label,
.support-dialog h2 small {
    color: var(--app-muted);
}

.admin-table-wrap,
.detail-card,
.support-messages,
.statistics-grid article {
    border-color: var(--app-border);
    color: var(--app-text);
    background: rgba(255, 255, 255, 0.035);
}

.admin-page th,
.admin-page td {
    border-bottom-color: var(--app-border);
}

.role,
.thread-item,
.support-messages article {
    border-color: var(--app-border);
    color: var(--app-text);
    background: rgba(255, 255, 255, 0.05);
}

.thread-item.active,
.support-messages article.from-admin {
    border-color: rgba(167, 133, 255, 0.36);
    background: rgba(139, 92, 246, 0.15);
}

.thread-list {
    border-right-color: var(--app-border);
}

.link-btn,
.close-btn,
.form-message {
    color: #b79cff;
}

/* Публичная страница */
#app:not(.chat-page):not(.account-page):not(.admin-page) .site-header {
    border-bottom-color: var(--app-border);
    background: rgba(14, 9, 24, 0.9);
    box-shadow: 0 12px 32px rgba(0, 0, 0, 0.22);
}

.container {
    max-width: 1160px;
}

.hero-section {
    min-height: 92vh;
    padding: 100px 0 72px;
}

.hero-container {
    gap: 30px;
}

.main-title {
    max-width: 860px;
    font-size: clamp(2.7rem, 7vw, 5.3rem);
    line-height: 1.02;
    letter-spacing: -0.055em;
    text-shadow: none;
}

.main-title span {
    margin-top: 22px;
    color: #bcb3cb;
    font-size: clamp(1.1rem, 2.2vw, 1.55rem);
    letter-spacing: -0.02em;
}

.auth-buttons {
    max-width: 420px;
    flex-direction: row;
    gap: 10px;
    padding: 6px;
    border: 1px solid var(--app-border);
    border-radius: 16px;
    background: rgba(21, 15, 34, 0.72);
    box-shadow: var(--app-shadow);
}

.btn-login,
.btn-register {
    min-height: 50px;
    padding: 12px 22px;
    border: 0;
    border-radius: 11px;
    font-size: 0.98rem;
    text-shadow: none;
}

.btn-login {
    background: linear-gradient(135deg, var(--app-accent), var(--app-accent-strong));
}

.btn-register {
    background: rgba(255, 255, 255, 0.06);
}

.sub-buttons {
    width: auto;
    max-width: 100%;
    gap: 6px;
    margin-top: 4px;
    padding: 5px;
    border: 1px solid var(--app-border);
    border-radius: 14px;
    background: rgba(21, 15, 34, 0.62);
    box-shadow: none;
}

.sub-buttons > * {
    width: auto;
    padding: 9px 15px;
    border: 0;
    border-radius: 9px !important;
    color: #c9c1d5;
    background: transparent;
    font-size: 0.86rem;
    text-shadow: none;
}

.content-block {
    padding: 88px 0;
    border-color: var(--app-border);
    background: rgba(13, 9, 22, 0.72);
    backdrop-filter: blur(12px);
}

.content-block:nth-of-type(odd) {
    background: rgba(20, 14, 32, 0.74);
}

.content-block h2 {
    color: var(--app-text);
    font-size: clamp(2rem, 4vw, 3rem);
    letter-spacing: -0.04em;
    text-shadow: none;
}

.about-section .lead-text,
.features-section .lead-text,
.pricing-section .lead-text,
.help-section .lead-text,
.mission-card,
.feature-card,
.pricing-card,
.pricing-comparison,
.pricing-faq,
.faq-item,
.category-card,
.support-contact {
    border: 1px solid var(--app-border);
    border-radius: var(--app-radius-lg);
    background: rgba(255, 255, 255, 0.035);
    box-shadow: none;
}

.mission-card:hover,
.feature-card:hover,
.pricing-card:hover,
.faq-item:hover,
.category-card:hover {
    border-color: var(--app-border-strong);
    background: rgba(255, 255, 255, 0.055);
    transform: translateY(-3px);
}

.pricing-card.popular {
    border: 1px solid rgba(167, 133, 255, 0.55);
    background: linear-gradient(145deg, rgba(139, 92, 246, 0.13), rgba(255, 255, 255, 0.035));
}

.popular-badge {
    background: linear-gradient(135deg, var(--app-accent), var(--app-accent-strong));
}

.footer-nav {
    border-top-color: var(--app-border);
    background: #0c0814;
}

.nav-link {
    color: var(--app-muted);
    text-transform: none;
}

.nav-link:hover {
    color: #fff;
    border-bottom-color: var(--app-accent);
    text-shadow: none;
}

.auth-modal {
    border-color: var(--app-border);
    background: rgba(24, 17, 39, 0.98);
}

.auth-tab.active {
    background: linear-gradient(135deg, var(--app-accent), var(--app-accent-strong));
}

@media (max-width: 900px) {
    .chat-page,
    .account-page,
    .admin-page,
    .notes-page {
        padding-left: 0;
        padding-bottom: 76px;
    }

    .app-sidebar {
        top: auto;
        right: 12px;
        bottom: 10px;
        left: 12px;
        width: auto;
        height: 58px;
        flex-direction: row;
        justify-content: center;
        gap: 12px;
        padding: 6px 10px;
        border-radius: 18px;
    }

    .app-sidebar-logo {
        display: none;
    }

    .app-sidebar-nav {
        width: auto;
        display: flex;
        gap: 8px;
    }

    .app-sidebar-link {
        width: 46px;
        height: 46px;
    }

    .app-sidebar-link span {
        display: none;
    }

    .chat-shell,
    .account-shell,
    .admin-shell {
        width: 100%;
        padding: 10px;
    }

    .chat-topbar {
        min-height: 62px;
    }

    .message-bubble {
        max-width: 86%;
    }
}

@media (max-width: 640px) {
    .chat-topbar .brand span {
        display: none;
    }

    .chat-stream {
        padding: 18px 12px;
    }

    .message-row.assistant::before,
    .message-row.alert::before {
        display: none;
    }

    .message-bubble {
        max-width: 92%;
    }

    .composer-modebar {
        align-items: stretch;
        gap: 8px;
    }

    .mode-control {
        min-width: 0;
    }

    .mode-segment {
        gap: 5px;
        padding: 6px 8px;
        font-size: 0.72rem;
    }

    .mode-segment > svg,
    .response-mode-icon {
        display: none;
    }

    .composer-center {
        min-height: 62px;
    }

    .send-primary {
        width: 48px;
        height: 48px;
    }

    .account-topbar,
    .admin-topbar {
        align-items: flex-start;
    }

    .topbar-actions {
        width: 100%;
        overflow-x: auto;
    }

    .auth-buttons {
        width: min(100%, 360px);
    }

    .sub-buttons {
        width: min(100%, 390px);
        flex-wrap: wrap;
        justify-content: center;
    }

    .sub-buttons > * {
        flex: 1 1 42%;
    }
}

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