:root {
    --unichat-bg: #f3f7fb;
    --unichat-panel: #ffffff;
    --unichat-surface: #f7fbff;
    --unichat-surface-hover: #eef6ff;
    --unichat-border: #dfe8f2;
    --unichat-text: #0f1f33;
    --unichat-muted: #64758b;
    --unichat-primary: #096fe3;
    --unichat-primary-hover: #075cc0;
    --unichat-primary-text: #ffffff;
    --unichat-focus: rgba(9, 111, 227, 0.22);
    --unichat-shadow: rgba(15, 31, 51, 0.12);
    --unichat-soft-shadow: 0 18px 45px rgba(15, 31, 51, 0.10);
    --unichat-nav-shadow: 0 10px 32px rgba(15, 31, 51, 0.08);
    --unichat-success-text: #0b5d3b;
    --unichat-success-bg: #dff5ea;
    --unichat-warning-text: #725100;
    --unichat-warning-bg: #fff1c7;
    --unichat-danger-text: #7a2020;
    --unichat-danger-bg: #f8dddd;
    --unichat-neutral-text: #334155;
    --unichat-neutral-bg: #e8edf3;
    --unichat-own-text: #ffffff;
    --unichat-own-muted: rgba(255, 255, 255, 0.78);
    --unichat-own-divider: rgba(255, 255, 255, 0.35);
    color-scheme: light;
}

:root[data-theme="dark"] {
    --unichat-bg: #071426;
    --unichat-panel: #101d2d;
    --unichat-surface: #15263a;
    --unichat-surface-hover: #1c3048;
    --unichat-border: #29405d;
    --unichat-text: #f1f7ff;
    --unichat-muted: #9fb0c4;
    --unichat-primary: #27a8ff;
    --unichat-primary-hover: #62c0ff;
    --unichat-primary-text: #07111a;
    --unichat-focus: rgba(39, 168, 255, 0.30);
    --unichat-shadow: rgba(0, 0, 0, 0.34);
    --unichat-soft-shadow: 0 18px 45px rgba(0, 0, 0, 0.24);
    --unichat-nav-shadow: 0 10px 32px rgba(0, 0, 0, 0.20);
    --unichat-success-text: #b8f0cf;
    --unichat-success-bg: #17462f;
    --unichat-warning-text: #ffe7a3;
    --unichat-warning-bg: #4d390f;
    --unichat-danger-text: #ffc4c4;
    --unichat-danger-bg: #572323;
    --unichat-neutral-text: #d9e2ec;
    --unichat-neutral-bg: #2b3947;
    --unichat-own-text: #08121a;
    --unichat-own-muted: rgba(8, 18, 26, 0.72);
    --unichat-own-divider: rgba(8, 18, 26, 0.24);
    color-scheme: dark;
}

@media (prefers-color-scheme: dark) {
    :root:not([data-theme="light"]) {
        --unichat-bg: #071426;
        --unichat-panel: #101d2d;
        --unichat-surface: #15263a;
        --unichat-surface-hover: #1c3048;
        --unichat-border: #29405d;
        --unichat-text: #f1f7ff;
        --unichat-muted: #9fb0c4;
        --unichat-primary: #27a8ff;
        --unichat-primary-hover: #62c0ff;
        --unichat-primary-text: #07111a;
        --unichat-focus: rgba(39, 168, 255, 0.30);
        --unichat-shadow: rgba(0, 0, 0, 0.34);
        --unichat-soft-shadow: 0 18px 45px rgba(0, 0, 0, 0.24);
        --unichat-nav-shadow: 0 10px 32px rgba(0, 0, 0, 0.20);
        --unichat-success-text: #b8f0cf;
        --unichat-success-bg: #17462f;
        --unichat-warning-text: #ffe7a3;
        --unichat-warning-bg: #4d390f;
        --unichat-danger-text: #ffc4c4;
        --unichat-danger-bg: #572323;
        --unichat-neutral-text: #d9e2ec;
        --unichat-neutral-bg: #2b3947;
        --unichat-own-text: #08121a;
        --unichat-own-muted: rgba(8, 18, 26, 0.72);
        --unichat-own-divider: rgba(8, 18, 26, 0.24);
        color-scheme: dark;
    }
}

body {
    color: var(--unichat-text);
    background: var(--unichat-bg);
    font-feature-settings: "cv02", "cv03", "cv04";
}

a {
    color: var(--unichat-primary);
}

.bg-white {
    background-color: var(--unichat-panel) !important;
}

.border-bottom {
    border-bottom-color: var(--unichat-border) !important;
}

.text-secondary {
    color: var(--unichat-muted) !important;
}

.navbar-brand,
.nav-link,
.form-label,
.form-control,
.form-select,
.table {
    color: var(--unichat-text);
}

.form-control,
.form-select,
.form-check-input,
.modal-content {
    background-color: var(--unichat-panel);
    border-color: var(--unichat-border);
}

.form-check-input:checked {
    background-color: var(--unichat-primary);
    border-color: var(--unichat-primary);
}

.form-control:disabled,
.form-select:disabled {
    color: var(--unichat-muted);
    background-color: var(--unichat-surface);
}

.form-control::placeholder {
    color: var(--unichat-muted);
}

.table {
    --bs-table-color: var(--unichat-text);
    --bs-table-bg: var(--unichat-panel);
    --bs-table-border-color: var(--unichat-border);
    --bs-table-hover-color: var(--unichat-text);
    --bs-table-hover-bg: var(--unichat-surface-hover);
}

.btn-outline-secondary {
    --bs-btn-color: var(--unichat-muted);
    --bs-btn-border-color: var(--unichat-border);
    --bs-btn-hover-color: var(--unichat-text);
    --bs-btn-hover-bg: var(--unichat-surface-hover);
    --bs-btn-hover-border-color: var(--unichat-border);
}

.btn-outline-danger {
    --bs-btn-color: var(--unichat-danger-text);
    --bs-btn-border-color: var(--unichat-danger-text);
}

.brand-logo {
    width: 34px;
    height: 34px;
    display: inline-block;
    flex: 0 0 auto;
    object-fit: contain;
}

.app-brand,
.app-brand-link {
    display: inline-flex;
    align-items: center;
    gap: 10px;
}

.app-brand-link {
    text-decoration: none;
}

.login-page {
    min-height: 100vh;
    background:
        linear-gradient(135deg, #071426 0%, #0d3472 48%, #096fe3 100%);
}

.login-shell {
    min-height: 100vh;
    display: grid;
    place-items: center;
    padding: 24px;
}

.login-panel {
    width: min(100%, 430px);
    padding: 32px;
    background: rgba(255, 255, 255, 0.96);
    border: 1px solid rgba(255, 255, 255, 0.72);
    border-radius: 8px;
    box-shadow: 0 24px 70px rgba(0, 0, 0, 0.26);
    backdrop-filter: blur(18px);
}

.login-brand {
    display: flex;
    align-items: center;
    gap: 14px;
    margin-bottom: 28px;
}

.login-logo {
    width: 58px;
    height: 58px;
}

.login-title {
    margin: 0;
    font-size: 1.65rem;
    line-height: 1.2;
}

.login-subtitle {
    margin: 2px 0 0;
    color: var(--unichat-muted);
}

.login-form .form-label {
    font-weight: 600;
}

.login-form .form-control {
    border-color: var(--unichat-border);
    border-radius: 8px;
}

.login-form .form-control:focus {
    border-color: var(--unichat-primary);
    box-shadow: 0 0 0 0.25rem var(--unichat-focus);
}

.btn-primary {
    --bs-btn-bg: var(--unichat-primary);
    --bs-btn-border-color: var(--unichat-primary);
    --bs-btn-color: var(--unichat-primary-text);
    --bs-btn-hover-bg: var(--unichat-primary-hover);
    --bs-btn-hover-border-color: var(--unichat-primary-hover);
    --bs-btn-hover-color: var(--unichat-primary-text);
    --bs-btn-active-bg: var(--unichat-primary-hover);
    --bs-btn-active-border-color: var(--unichat-primary-hover);
    --bs-btn-active-color: var(--unichat-primary-text);
    border-radius: 8px;
}

@media (max-width: 480px) {
    .login-shell {
        padding: 16px;
        align-items: stretch;
    }

    .login-panel {
        align-self: center;
        padding: 24px;
    }
}

.admin-page {
    min-height: 100vh;
    overflow-x: hidden;
    background:
        linear-gradient(180deg, rgba(247, 250, 255, 0.92), rgba(255, 255, 255, 0.98)),
        var(--unichat-bg);
}

.admin-topbar {
    position: sticky;
    top: 0;
    z-index: 20;
    background: rgba(255, 255, 255, 0.92);
    border-bottom: 1px solid rgba(223, 232, 242, 0.92);
    box-shadow: 0 8px 28px rgba(15, 31, 51, 0.08);
    backdrop-filter: blur(18px);
}

.admin-nav {
    min-height: 74px;
    padding: 10px 18px;
}

.admin-nav .container-fluid {
    min-width: 0;
    gap: 16px;
}

.admin-nav .navbar-collapse {
    min-width: 0;
}

.admin-brand {
    min-width: max-content;
    gap: 10px;
    color: #07143f;
    font-size: 1.02rem;
    font-weight: 900;
}

.admin-nav-links {
    min-width: 0;
    gap: 4px;
}

.admin-nav-links .nav-link {
    min-height: 40px;
    display: inline-flex;
    align-items: center;
    gap: 7px;
    padding: 8px 11px;
    color: #40506f;
    border-radius: 999px;
    font-size: 0.9rem;
    font-weight: 750;
}

.admin-nav-links .nav-link:hover,
.admin-nav-links .nav-link.active {
    color: #0059e8;
    background: rgba(0, 89, 232, 0.09);
}

.admin-nav-actions {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: 10px;
}

.admin-nav-actions .btn,
.admin-actions .btn,
#create-user-button,
#api-test .btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    min-height: 34px;
    border-radius: 999px;
    font-weight: 800;
}

.admin-user {
    min-width: 0;
    text-align: right;
}

.admin-user .fw-semibold,
.admin-user .small {
    max-width: 180px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.admin-shell {
    max-width: 1280px;
    padding-right: clamp(16px, 3vw, 32px) !important;
    padding-left: clamp(16px, 3vw, 32px) !important;
}

.admin-hero,
.admin-card,
.admin-section {
    background: var(--unichat-panel);
    border: 1px solid rgba(223, 232, 242, 0.92);
    border-radius: 18px;
    box-shadow: 0 18px 46px rgba(15, 31, 51, 0.08);
}

.admin-hero {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 18px;
    padding: 26px 28px;
}

.admin-hero h1 {
    color: #07143f;
    font-size: clamp(2rem, 4vw, 3.25rem);
    font-weight: 900;
    letter-spacing: 0;
}

.admin-card {
    min-height: 128px;
    display: grid;
    align-content: end;
    gap: 6px;
    padding: 20px 20px 18px;
    background:
        linear-gradient(180deg, rgba(9, 111, 227, 0.06), rgba(9, 111, 227, 0)),
        var(--unichat-panel);
}

.admin-card-icon {
    width: 42px;
    height: 42px;
    display: inline-grid;
    place-items: center;
    color: #0059e8;
    background: rgba(0, 89, 232, 0.10);
    border-radius: 14px;
    font-size: 1.22rem;
}

.admin-card-label {
    color: #64758b;
    font-size: 0.78rem;
    font-weight: 850;
    letter-spacing: 0.04em;
    text-transform: uppercase;
}

.admin-card strong {
    color: #07143f;
    font-size: 1.35rem;
    font-weight: 900;
}

.admin-section {
    overflow: hidden;
    padding: 0;
}

.admin-section-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    padding: 20px 22px 16px;
    border-bottom: 1px solid rgba(223, 232, 242, 0.72);
}

.admin-section h2 {
    display: inline-flex;
    align-items: center;
    gap: 9px;
    color: #07143f;
    font-weight: 900;
}

.admin-section h2 .bi {
    color: #0059e8;
}

.admin-api-test-result {
    margin: 0 22px 22px !important;
    padding: 13px 14px;
    color: var(--unichat-muted);
    background: var(--unichat-surface);
    border: 1px solid var(--unichat-border);
    border-radius: 14px;
}

.admin-toolbar {
    max-width: none;
    padding: 16px 22px;
}

.admin-toolbar .form-control {
    min-height: 46px;
    border-radius: 16px;
}

.admin-table-wrap {
    max-width: 100%;
    overflow-x: auto;
    border: 0;
    border-top: 1px solid rgba(223, 232, 242, 0.72);
    border-radius: 0;
}

.admin-table-wrap .table > :not(caption) > * > * {
    padding: 15px 18px;
    color: #07143f;
    background: transparent;
    border-bottom-color: #edf1f6;
}

.admin-table-wrap thead th {
    color: #64758b;
    background: #f7fbff !important;
    font-size: 0.76rem;
    font-weight: 900;
    letter-spacing: 0.04em;
    text-transform: uppercase;
}

.admin-table-wrap tbody tr:hover > * {
    background: rgba(0, 89, 232, 0.04);
}

.admin-truncate {
    max-width: 360px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.admin-actions {
    display: inline-flex;
    flex-wrap: wrap;
    justify-content: flex-end;
    gap: 7px;
}

.status-pill {
    display: inline-flex;
    align-items: center;
    min-height: 26px;
    padding: 2px 10px;
    border-radius: 999px;
    font-size: 0.78rem;
    font-weight: 850;
}

.status-pill.is-active {
    color: var(--unichat-success-text);
    background: var(--unichat-success-bg);
}

.status-pill.is-inactive {
    color: var(--unichat-danger-text);
    background: var(--unichat-danger-bg);
}

.admin-status-list {
    display: grid;
    gap: 10px;
    padding: 0 22px 18px;
    margin: 0;
    list-style: none;
}

.admin-status-list li {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    padding: 10px 0;
    border-bottom: 1px solid var(--unichat-border);
}

.admin-status-list li span {
    display: grid;
    gap: 2px;
}

.admin-status-list li small {
    color: var(--unichat-muted);
}

.admin-status-list li:last-child {
    border-bottom: 0;
}

.admin-audit-list,
.admin-error-list {
    display: grid;
    gap: 10px;
    padding: 0 22px 18px;
    margin: 0;
    list-style: none;
}

.admin-audit-list li,
.admin-error-list li {
    display: grid;
    gap: 2px;
    padding: 10px 0;
    border-bottom: 1px solid var(--unichat-border);
}

.admin-audit-list li:last-child,
.admin-error-list li:last-child {
    border-bottom: 0;
}

.admin-audit-list span,
.admin-audit-list small,
.admin-error-list span,
.admin-error-list small {
    color: var(--unichat-muted);
}

.admin-log-title {
    display: flex;
    align-items: flex-start;
    gap: 8px;
}

.admin-log-level {
    display: inline-flex;
    align-items: center;
    min-height: 22px;
    padding: 1px 8px;
    color: var(--unichat-neutral-text);
    background: var(--unichat-neutral-bg);
    border-radius: 999px;
    font-size: 0.72rem;
    font-weight: 800;
    line-height: 1.2;
    text-transform: uppercase;
}

.admin-log-level.is-warning {
    color: var(--unichat-warning-text);
    background: var(--unichat-warning-bg);
}

.admin-log-level.is-error {
    color: var(--unichat-danger-text);
    background: var(--unichat-danger-bg);
}

.diagnostic-status {
    display: inline-flex;
    align-items: center;
    min-height: 26px;
    padding: 2px 10px;
    border-radius: 999px;
    font-size: 0.8rem;
    font-weight: 850;
}

.diagnostic-status.is-ok {
    color: var(--unichat-success-text);
    background: var(--unichat-success-bg);
}

.diagnostic-status.is-warning {
    color: var(--unichat-warning-text);
    background: var(--unichat-warning-bg);
}

.diagnostic-status.is-error {
    color: var(--unichat-danger-text);
    background: var(--unichat-danger-bg);
}

#diagnostics > p,
#logs > p,
#error-logs > p,
#api-test > p {
    padding: 0 22px;
}

#api-test .d-flex {
    padding: 0 22px 16px;
}

@media (max-width: 991.98px) {
    .admin-nav {
        padding: 8px 12px;
    }

    .admin-nav-links {
        width: 100%;
        max-width: 100%;
        overflow-x: auto;
        flex-direction: row;
        padding: 8px 0 2px;
        -webkit-overflow-scrolling: touch;
    }

    .admin-nav-links .nav-link {
        white-space: nowrap;
    }

    .admin-nav-actions {
        min-width: 0;
        width: 100%;
        align-items: stretch;
        justify-content: flex-start;
        flex-wrap: wrap;
        padding-top: 10px;
    }

    .admin-user {
        text-align: left !important;
    }

    .admin-hero,
    .admin-section-header {
        align-items: flex-start;
        flex-direction: column;
    }
}

@media (max-width: 575.98px) {
    .admin-shell {
        padding-top: 16px !important;
    }

    .admin-hero,
    .admin-card,
    .admin-section {
        border-radius: 16px;
    }

    .admin-hero {
        padding: 22px;
    }

    .admin-actions {
        justify-content: flex-start;
    }

    .admin-actions .btn span {
        max-width: 88px;
        overflow: hidden;
        text-overflow: ellipsis;
        white-space: nowrap;
    }
}

.chat-page {
    min-height: 100vh;
}

.chat-topbar {
    position: sticky;
    top: 0;
    z-index: 20;
    box-shadow: var(--unichat-nav-shadow);
}

.chat-nav {
    min-height: 68px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    padding-right: 24px;
    padding-left: 24px;
}

.chat-shell {
    max-width: 1320px;
}

.chat-layout {
    min-height: calc(100vh - 124px);
    display: grid;
    grid-template-columns: minmax(300px, 380px) minmax(0, 1fr);
    gap: 20px;
}

.chat-sidebar,
.chat-panel {
    min-width: 0;
    background: var(--unichat-panel);
    border: 1px solid var(--unichat-border);
    border-radius: 8px;
    box-shadow: var(--unichat-soft-shadow);
}

.chat-sidebar {
    display: flex;
    flex-direction: column;
}

.chat-sidebar-header,
.chat-panel-header {
    padding: 20px;
    border-bottom: 1px solid var(--unichat-border);
}

.chat-start-form {
    padding: 18px 20px;
    border-bottom: 1px solid var(--unichat-border);
}

.chat-conversation-list {
    overflow: auto;
}

.chat-conversation-item {
    width: 100%;
    display: grid;
    gap: 4px;
    padding: 16px 20px;
    color: var(--unichat-text);
    text-align: left;
    background: transparent;
    border: 0;
    border-bottom: 1px solid var(--unichat-border);
}

.chat-conversation-item:hover,
.chat-conversation-item.is-active {
    background: var(--unichat-surface-hover);
}

.chat-conversation-item.is-active {
    box-shadow: inset 4px 0 0 var(--unichat-primary);
}

.chat-conversation-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
    min-width: 0;
}

.chat-conversation-name {
    min-width: 0;
    overflow: hidden;
    font-weight: 700;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.chat-unread-badge {
    min-width: 24px;
    height: 24px;
    display: inline-grid;
    flex: 0 0 auto;
    place-items: center;
    padding: 0 7px;
    color: var(--unichat-primary-text);
    background: var(--unichat-primary);
    border-radius: 999px;
    font-size: 0.78rem;
    font-weight: 700;
    line-height: 1;
}

.chat-conversation-preview {
    overflow: hidden;
    color: var(--unichat-muted);
    text-overflow: ellipsis;
    white-space: nowrap;
}

.chat-panel {
    display: grid;
    grid-template-rows: auto minmax(0, 1fr) auto auto;
}

.chat-panel-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    background: linear-gradient(180deg, rgba(9, 111, 227, 0.04), rgba(9, 111, 227, 0));
}

.chat-panel-actions {
    display: inline-flex;
    flex-wrap: wrap;
    justify-content: flex-end;
    gap: 8px;
}

.chat-messages {
    min-height: 320px;
    overflow: auto;
    display: flex;
    flex-direction: column;
    gap: 14px;
    padding: 22px;
    background:
        linear-gradient(180deg, rgba(255, 255, 255, 0.38), rgba(255, 255, 255, 0)),
        var(--unichat-surface);
}

.chat-message {
    max-width: min(78%, 680px);
    display: grid;
    gap: 4px;
}

.chat-message.is-own {
    align-self: flex-end;
}

.chat-message-meta {
    color: var(--unichat-muted);
    font-size: 0.82rem;
}

.chat-message.is-own .chat-message-meta {
    text-align: right;
}

.chat-message-bubble {
    padding: 11px 14px;
    overflow-wrap: anywhere;
    background: var(--unichat-panel);
    border: 1px solid var(--unichat-border);
    border-radius: 8px;
    box-shadow: 0 8px 20px rgba(15, 31, 51, 0.06);
}

.chat-message-bubble.has-details {
    cursor: pointer;
}

.chat-message-bubble.has-details:focus {
    outline: 3px solid var(--unichat-focus);
    outline-offset: 2px;
}

.chat-message.is-own .chat-message-bubble {
    color: var(--unichat-own-text);
    background: var(--unichat-primary);
    border-color: var(--unichat-primary);
}

.chat-message-text {
    white-space: pre-wrap;
}

.chat-message-details {
    margin-top: 8px;
    padding-top: 8px;
    color: var(--unichat-text);
    border-top: 1px solid var(--unichat-border);
}

.chat-message.is-own .chat-message-details {
    color: var(--unichat-own-text);
    border-top: 1px solid var(--unichat-own-divider);
}

.chat-message-details-label {
    margin-bottom: 3px;
    font-size: 0.72rem;
    font-weight: 700;
    opacity: 0.72;
    text-transform: uppercase;
}

.chat-message-status {
    margin-top: 8px;
    color: var(--unichat-muted);
    font-size: 0.78rem;
}

.chat-message.is-own .chat-message-status {
    color: var(--unichat-own-muted);
}

.translation-indicator {
    display: flex;
    align-items: center;
    gap: 9px;
    padding: 10px 22px;
    color: var(--unichat-muted);
    background: var(--unichat-panel);
    border-top: 1px solid var(--unichat-border);
    font-size: 0.86rem;
    font-weight: 700;
}

.translation-indicator[hidden] {
    display: none;
}

.translation-indicator-spinner {
    width: 16px;
    height: 16px;
    flex: 0 0 auto;
    border: 2px solid rgba(9, 111, 227, 0.2);
    border-top-color: var(--unichat-primary);
    border-radius: 999px;
    animation: unichat-spin 0.8s linear infinite;
}

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

.chat-message-retry {
    justify-self: end;
    padding: 0;
    color: var(--unichat-primary);
    background: transparent;
    border: 0;
    font-size: 0.8rem;
    font-weight: 700;
}

.chat-message-retry:disabled {
    color: var(--unichat-muted);
}

.chat-message-retry:focus {
    outline: 3px solid var(--unichat-focus);
    outline-offset: 2px;
}

.chat-message-actions {
    display: inline-flex;
    justify-self: end;
    gap: 10px;
}

.chat-message-edit,
.chat-message-delete {
    padding: 0;
    background: transparent;
    border: 0;
    font-size: 0.8rem;
    font-weight: 700;
}

.chat-message-edit {
    color: var(--unichat-primary);
}

.chat-message-delete {
    color: var(--unichat-danger-text);
}

.chat-message-edit:focus,
.chat-message-delete:focus {
    outline: 3px solid var(--unichat-focus);
    outline-offset: 2px;
}

.chat-composer {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
    gap: 12px;
    padding: 18px 20px;
    border-top: 1px solid var(--unichat-border);
}

.chat-composer .form-control {
    min-height: 48px;
    border-radius: 8px;
    resize: none;
    overflow-y: auto;
}

.chat-empty {
    padding: 18px;
    color: var(--unichat-muted);
}

.settings-section + .settings-section {
    padding-top: 18px;
    border-top: 1px solid var(--unichat-border);
}

@media (max-width: 991.98px) {
    .chat-layout {
        grid-template-columns: 1fr;
    }

    .chat-sidebar,
    .chat-panel {
        min-height: 360px;
    }
}

@media (max-width: 575.98px) {
    .chat-nav {
        align-items: flex-start;
        flex-direction: column;
        gap: 10px;
        padding-top: 12px;
        padding-bottom: 12px;
    }

    .chat-panel-header {
        align-items: flex-start;
        flex-direction: column;
    }

    .chat-composer {
        grid-template-columns: 1fr;
    }

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

/* App-style chat UI */
.chat-page {
    min-height: 100vh;
    overflow-x: hidden;
    background:
        radial-gradient(circle at 16% 0%, rgba(9, 111, 227, 0.10), transparent 28%),
        radial-gradient(circle at 84% 10%, rgba(34, 197, 94, 0.08), transparent 26%),
        #f8fbff;
}

.chat-shell {
    min-height: 100dvh;
    display: grid;
    grid-template-rows: minmax(0, 1fr) auto;
    gap: 14px;
    padding: 24px;
}

.chat-layout {
    width: min(100%, 1180px);
    min-height: 0;
    justify-self: center;
    display: grid;
    grid-template-columns: minmax(310px, 390px) minmax(0, 1fr);
    gap: 0;
    overflow: hidden;
    background: rgba(255, 255, 255, 0.92);
    border: 1px solid rgba(223, 232, 242, 0.92);
    border-radius: 28px;
    box-shadow: 0 26px 80px rgba(15, 31, 51, 0.14);
}

.app-view {
    min-width: 0;
    min-height: 0;
    background: rgba(255, 255, 255, 0.96);
}

.chat-sidebar,
.contacts-panel,
.settings-panel {
    min-width: 0;
    display: flex;
    flex-direction: column;
    border: 0;
    border-radius: 0;
    box-shadow: none;
}

.contacts-panel,
.settings-panel {
    display: none;
}

.chat-layout.view-contacts .chat-sidebar,
.chat-layout.view-settings .chat-sidebar {
    display: none;
}

.chat-layout.view-contacts .contacts-panel,
.chat-layout.view-settings .settings-panel {
    display: flex;
}

.chat-panel {
    min-width: 0;
    display: grid;
    grid-template-rows: auto minmax(0, 1fr) auto auto;
    border: 0;
    border-left: 1px solid rgba(223, 232, 242, 0.88);
    border-radius: 0;
    box-shadow: none;
}

.app-screen-header,
.chat-panel-header {
    min-height: 92px;
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 22px 28px 14px;
    border-bottom: 0;
    background: transparent;
}

.chat-sidebar-header {
    justify-content: space-between;
}

.app-screen-header h1,
.chat-title-block h2 {
    margin: 0;
    color: #07143f;
    font-size: 1.45rem;
    font-weight: 800;
    letter-spacing: 0;
}

.app-eyebrow {
    margin: 0 0 2px;
    color: #5d6b82;
    font-size: 0.82rem;
    font-weight: 700;
    text-transform: uppercase;
}

.app-brand h1 {
    margin: 0;
    color: #07143f;
    font-size: 1.55rem;
    font-weight: 800;
}

.brand-logo {
    width: 42px;
    height: 42px;
    border-radius: 10px;
    box-shadow: 0 8px 18px rgba(9, 111, 227, 0.22);
}

.app-icon-button,
.app-back-button,
.composer-icon,
.send-icon-button {
    width: 42px;
    height: 42px;
    display: inline-grid;
    flex: 0 0 auto;
    place-items: center;
    color: #ffffff;
    background: linear-gradient(180deg, #1378ff, #0059e8);
    border: 0;
    border-radius: 999px;
    box-shadow: 0 10px 22px rgba(9, 111, 227, 0.28);
    font-size: 1.45rem;
    font-weight: 600;
    line-height: 1;
}

.app-icon-button .bi,
.app-back-button .bi,
.composer-icon .bi,
.send-icon-button .bi {
    display: block;
    font-size: 1.1rem;
    line-height: 1;
}

.app-icon-button .bi-plus-lg {
    font-size: 1.3rem;
}

.app-icon-button:disabled,
.send-icon-button:disabled {
    opacity: 0.45;
    box-shadow: none;
}

.app-icon-button-quiet,
.app-back-button,
.composer-icon {
    color: #07143f;
    background: transparent;
    box-shadow: none;
}

.app-icon-button-quiet:hover,
.app-back-button:hover,
.composer-icon:hover {
    background: #f0f5fb;
}

.app-icon-button.is-danger {
    color: #b4232d;
}

.chat-search {
    position: relative;
    padding: 0 28px 16px;
}

.chat-search .form-control {
    height: 50px;
    padding-left: 44px;
    color: #07143f;
    background: #ffffff;
    border: 1px solid #e2e9f2;
    border-radius: 16px;
    box-shadow: 0 10px 26px rgba(15, 31, 51, 0.06);
}

.chat-search-icon {
    position: absolute;
    top: 17px;
    left: 44px;
    width: 16px;
    height: 16px;
    border: 2px solid #20304f;
    border-radius: 999px;
    opacity: 0.8;
}

.chat-search-icon::after {
    content: "";
    position: absolute;
    right: -5px;
    bottom: -5px;
    width: 8px;
    height: 2px;
    background: #20304f;
    border-radius: 999px;
    transform: rotate(45deg);
}

.chat-filter-tabs {
    display: flex;
    gap: 12px;
    padding: 0 28px 18px;
}

.chat-filter-tabs button {
    min-width: 84px;
    min-height: 38px;
    padding: 7px 16px;
    color: #07143f;
    background: #ffffff;
    border: 1px solid #e4ebf4;
    border-radius: 999px;
    box-shadow: 0 8px 18px rgba(15, 31, 51, 0.06);
}

.chat-filter-tabs button.is-active {
    color: #ffffff;
    background: linear-gradient(180deg, #1378ff, #0059e8);
    border-color: transparent;
}

.chat-conversation-list,
.contacts-list {
    min-height: 0;
    overflow: auto;
    padding: 0 28px 18px;
}

.chat-conversation-item,
.contact-item {
    width: 100%;
    min-height: 76px;
    display: grid;
    grid-template-columns: 52px minmax(0, 1fr) auto;
    align-items: center;
    gap: 14px;
    padding: 12px 0;
    color: #07143f;
    text-align: left;
    background: transparent;
    border: 0;
    border-bottom: 1px solid #edf1f6;
}

.chat-conversation-item:hover,
.chat-conversation-item.is-active,
.contact-item:hover {
    background: transparent;
    box-shadow: none;
}

.chat-conversation-item.is-active .chat-conversation-name {
    color: #0059e8;
}

.chat-avatar {
    width: 52px;
    height: 52px;
    display: inline-grid;
    place-items: center;
    color: #ffffff;
    background:
        linear-gradient(135deg, rgba(10, 132, 255, 0.92), rgba(33, 197, 125, 0.90)),
        #0a84ff;
    border-radius: 999px;
    font-size: 0.95rem;
    font-weight: 800;
    box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.55);
}

.chat-conversation-copy,
.contact-copy {
    min-width: 0;
    display: grid;
    gap: 3px;
}

.chat-conversation-head {
    display: flex;
    align-items: baseline;
    justify-content: space-between;
    gap: 8px;
    min-width: 0;
}

.chat-conversation-name,
.contact-copy strong {
    min-width: 0;
    overflow: hidden;
    color: #07143f;
    font-size: 1rem;
    font-weight: 800;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.chat-conversation-time,
.contact-copy small,
.contact-language {
    color: #5d6b82;
    font-size: 0.86rem;
}

.chat-conversation-preview {
    min-width: 0;
    overflow: hidden;
    color: #1f2a44;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.chat-unread-badge {
    min-width: 22px;
    height: 22px;
    padding: 0 7px;
    color: #ffffff;
    background: #0059e8;
    border-radius: 999px;
    font-size: 0.76rem;
    font-weight: 800;
}

.chat-title-block {
    min-width: 0;
    flex: 1 1 auto;
}

.chat-title-block p {
    margin: 2px 0 0;
    color: #07873f;
    font-size: 0.88rem;
}

.chat-header-avatar {
    width: 50px;
    height: 50px;
}

.chat-panel-actions {
    display: inline-flex;
    gap: 4px;
}

.chat-messages {
    min-height: 0;
    gap: 16px;
    padding: 18px 28px;
    background:
        linear-gradient(180deg, rgba(247, 250, 255, 0.74), rgba(255, 255, 255, 0.98)),
        #ffffff;
}

.chat-date-chip {
    align-self: center;
    padding: 5px 12px;
    color: #5d6b82;
    background: #eef3f9;
    border-radius: 999px;
    font-size: 0.82rem;
    font-weight: 700;
}

.chat-message {
    max-width: min(72%, 520px);
}

.chat-message-bubble {
    position: relative;
    padding: 13px 15px 9px;
    color: #07143f;
    background: #ffffff;
    border: 1px solid #e4ebf4;
    border-radius: 16px;
    box-shadow: 0 8px 26px rgba(15, 31, 51, 0.07);
}

.chat-message.is-own .chat-message-bubble {
    color: #ffffff;
    background: linear-gradient(180deg, #1378ff, #0059e8);
    border-color: transparent;
    box-shadow: 0 10px 24px rgba(9, 111, 227, 0.24);
}

.chat-message-status {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    margin-top: 8px;
    color: #5d6b82;
    font-size: 0.76rem;
}

.chat-message.is-own .chat-message-status {
    color: rgba(255, 255, 255, 0.82);
}

.chat-message-details {
    color: inherit;
}

.translation-indicator {
    padding: 10px 28px;
    color: #5d6b82;
    background: #ffffff;
    border-top: 1px solid #edf1f6;
}

.chat-message-actions {
    margin-top: 2px;
    opacity: 0;
    transition: opacity 0.16s ease;
}

.chat-message:hover .chat-message-actions,
.chat-message:focus-within .chat-message-actions {
    opacity: 1;
}

.chat-composer {
    grid-template-columns: auto minmax(0, 1fr) auto auto;
    align-items: end;
    gap: 10px;
    padding: 14px 28px 18px;
    background: #ffffff;
    border-top: 1px solid #edf1f6;
}

.chat-composer .form-control {
    min-height: 46px;
    max-height: 120px;
    padding: 12px 14px;
    overflow-y: auto;
    resize: none;
    border-radius: 16px;
}

.composer-icon {
    width: 38px;
    height: 38px;
    color: #07143f;
    font-size: 1.25rem;
}

.send-icon-button {
    width: 46px;
    height: 46px;
    font-size: 1.2rem;
}

.contact-start-form {
    padding: 0 28px 18px;
}

.settings-panel {
    overflow: auto;
    padding-bottom: 18px;
}

.settings-card {
    margin: 0 28px 22px;
    flex: 0 0 auto;
    overflow: hidden;
    background: #ffffff;
    border: 1px solid #e6edf5;
    border-radius: 18px;
    box-shadow: 0 12px 34px rgba(15, 31, 51, 0.06);
}

.settings-card-secondary {
    margin-top: 36px;
}

.settings-card-main {
    min-height: 424px;
}

.settings-row {
    width: 100%;
    min-height: 68px;
    display: grid;
    grid-template-columns: 30px minmax(0, 1fr) auto;
    align-items: center;
    gap: 12px;
    padding: 0 16px;
    color: #07143f;
    text-align: left;
    background: transparent;
    border: 0;
    border-bottom: 1px solid #edf1f6;
}

.settings-row:last-child {
    min-height: 82px;
    border-bottom: 0;
}

.settings-row strong {
    min-width: 0;
    max-width: 170px;
    overflow: hidden;
    color: #40506f;
    font-size: 0.9rem;
    font-weight: 500;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.settings-row > span:nth-child(2) {
    min-width: 0;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.settings-icon {
    width: 28px;
    height: 28px;
    display: inline-grid;
    place-items: center;
    color: #07143f;
    border: 2px solid #07143f;
    border-radius: 999px;
    font-size: 0.86rem;
    font-weight: 800;
}

.settings-icon .bi {
    display: block;
    font-size: 0.95rem;
    line-height: 1;
}

.settings-row.is-danger {
    color: #b4232d;
}

.settings-row.is-danger .settings-icon {
    color: #b4232d;
    border-color: #b4232d;
}

.app-tabbar {
    width: min(100%, 1180px);
    min-height: 72px;
    justify-self: center;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    overflow: hidden;
    background: rgba(255, 255, 255, 0.94);
    border: 1px solid rgba(223, 232, 242, 0.92);
    border-radius: 22px;
    box-shadow: 0 18px 46px rgba(15, 31, 51, 0.10);
}

.app-tabbar button {
    display: grid;
    place-items: center;
    align-content: center;
    gap: 3px;
    color: #07143f;
    background: transparent;
    border: 0;
    font-size: 0.82rem;
    font-weight: 700;
}

.app-tabbar button.is-active {
    color: #0059e8;
}

.tab-icon {
    width: 24px;
    height: 24px;
    display: inline-grid;
    place-items: center;
    color: currentColor;
    font-size: 1.32rem;
    line-height: 1;
}

@media (max-width: 991.98px) {
    .chat-shell {
        padding: 0;
    }

    .chat-layout {
        width: 100%;
        height: calc(100dvh - 74px);
        display: block;
        border: 0;
        border-radius: 0;
        box-shadow: none;
    }

    .app-view,
    .chat-panel,
    .contacts-panel,
    .settings-panel,
    .chat-sidebar {
        display: none;
        width: 100%;
        height: calc(100dvh - 74px);
        border: 0;
    }

    .app-view.is-active,
    .chat-sidebar.is-active,
    .contacts-panel.is-active,
    .settings-panel.is-active {
        display: flex;
    }

    .chat-panel.is-active {
        display: grid;
    }

    .app-tabbar {
        width: 100%;
        min-height: 74px;
        border-right: 0;
        border-bottom: 0;
        border-left: 0;
        border-radius: 0;
        box-shadow: 0 -8px 28px rgba(15, 31, 51, 0.08);
    }

    .app-screen-header,
    .chat-panel-header {
        padding: 28px 20px 14px;
    }

    .settings-panel {
        padding-bottom: calc(96px + env(safe-area-inset-bottom));
        -webkit-overflow-scrolling: touch;
    }

    .chat-search,
    .chat-filter-tabs,
    .chat-conversation-list,
    .contacts-list,
    .contact-start-form {
        padding-right: 20px;
        padding-left: 20px;
    }

    .chat-messages {
        padding: 16px 20px;
    }

    .chat-composer {
        grid-template-columns: auto minmax(0, 1fr) auto auto;
        gap: 8px;
        padding: 12px 16px 16px;
    }

    .chat-message {
        max-width: 82%;
    }
}

@media (max-width: 420px) {
    .chat-filter-tabs {
        gap: 8px;
    }

    .chat-filter-tabs button {
        min-width: 0;
        flex: 1 1 0;
        padding-right: 10px;
        padding-left: 10px;
    }

    .chat-panel-actions {
        gap: 0;
    }

    .app-icon-button,
    .app-back-button {
        width: 38px;
        height: 38px;
    }

    .chat-message {
        max-width: 88%;
    }

    .settings-card {
        margin-right: 20px;
        margin-bottom: 26px;
        margin-left: 20px;
    }

    .settings-card-secondary {
        margin-top: 22px;
    }

    .settings-card-main {
        min-height: 430px;
    }

    .settings-row:last-child {
        min-height: 88px;
    }
}