* {
    box-sizing: border-box;
}

:root {
    color-scheme: light;
    --color-background: #f5f5f5;
    --color-surface: #fff;
    --color-surface-secondary: #f0f2f4;
    --color-surface-tertiary: #e8ecef;
    --color-text: #222;
    --color-text-muted: #666;
    --color-border: #aeb3b8;
    --color-border-subtle: #ddd;
    --color-input-background: #fff;
    --color-link: #185d91;
    --color-link-hover: #104a76;
    --color-hover: #eceff1;
    --color-disabled: #777;
    --color-primary: #286fa7;
    --color-primary-hover: #1f6093;
    --color-primary-border: #1c5b8d;
    --color-primary-text: #fff;
    --color-danger: #8c1616;
    --color-danger-solid: #a52626;
    --color-danger-border: #b90000;
    --color-danger-surface: #fff1f1;
    --color-success: #166b2c;
    --color-success-border: #26843b;
    --color-success-surface: #eaf7ed;
    --color-warning: #704500;
    --color-warning-border: #b77900;
    --color-warning-surface: #fff4cc;
    --color-info: #185d91;
    --color-info-border: #7da9c9;
    --color-info-surface: #eaf4fb;
    --color-focus-ring: rgb(40 111 167 / 20%);
    --shadow-popover: 0 8px 24px rgb(0 0 0 / 25%);
    --shadow-modal: 0 18px 60px rgb(0 0 0 / 35%);
    --color-header-background: #20242a;
    --color-header-hover: #343a42;
    --color-header-border: #454c56;
    --color-header-text: #fff;
    --color-header-muted: #bbc1c8;
    --color-header-subtle: #929aa4;
}

html[data-theme="dark"] {
    color-scheme: dark;
    --color-background: #111827;
    --color-surface: #1f2937;
    --color-surface-secondary: #273244;
    --color-surface-tertiary: #334155;
    --color-text: #e5e7eb;
    --color-text-muted: #aab4c2;
    --color-border: #64748b;
    --color-border-subtle: #4b5563;
    --color-input-background: #111827;
    --color-link: #7dd3fc;
    --color-link-hover: #bae6fd;
    --color-hover: #374151;
    --color-disabled: #94a3b8;
    --color-primary: #2563eb;
    --color-primary-hover: #1d4ed8;
    --color-primary-border: #60a5fa;
    --color-danger: #fecaca;
    --color-danger-solid: #b91c1c;
    --color-danger-border: #f87171;
    --color-danger-surface: #4c1d24;
    --color-success: #bbf7d0;
    --color-success-border: #4ade80;
    --color-success-surface: #153c27;
    --color-warning: #fde68a;
    --color-warning-border: #fbbf24;
    --color-warning-surface: #493713;
    --color-info: #bae6fd;
    --color-info-border: #38bdf8;
    --color-info-surface: #17364b;
    --color-focus-ring: rgb(96 165 250 / 35%);
}

body {
    margin: 0;
    font-family: sans-serif;
    background: var(--color-background);
    color: var(--color-text);
}

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

a:hover {
    color: var(--color-link-hover);
}

.site-header {
    background: var(--color-header-background);
    color: var(--color-header-text);
}

.navigation {
    max-width: 1200px;
    margin: 0 auto;
    padding: 16px 24px;
    display: flex;
    align-items: center;
    gap: 24px;
}

.navigation a {
    color: var(--color-header-text);
    text-decoration: none;
}

.portal-brand {
    flex: 0 0 auto;
    font-weight: 700;
}

.application-navigation {
    display: flex;
    align-items: center;
    gap: 4px;
    min-width: 0;
}

.application-navigation[hidden] {
    display: none;
}

.mobile-navigation-toggle {
    display: none;
    flex: 0 0 44px;
    width: 44px;
    min-height: 44px;
    padding: 0;
    border: 0;
    border-radius: 5px;
    color: var(--color-header-text);
    background: transparent;
    cursor: pointer;
}

.mobile-navigation-toggle:hover {
    background: var(--color-header-hover);
}

.application-menu {
    position: relative;
    display: flex;
    align-items: stretch;
    border-radius: 5px;
}

.application-menu:hover,
.application-menu:focus-within,
.application-menu.is-open {
    background: var(--color-header-hover);
}

.application-home-link {
    display: flex;
    align-items: center;
    padding: 9px 8px 9px 12px;
    white-space: nowrap;
}

.application-menu-toggle {
    width: 32px;
    min-height: 38px;
    padding: 0;
    border: 0;
    border-radius: 0 5px 5px 0;
    color: var(--color-header-text);
    background: transparent;
    cursor: pointer;
}

.application-menu-toggle span {
    display: inline-block;
    width: 0;
    height: 0;
    border-top: 5px solid currentColor;
    border-right: 4px solid transparent;
    border-left: 4px solid transparent;
    transition: transform 120ms ease-in-out;
}

.application-menu-toggle[aria-expanded="true"] span {
    transform: rotate(180deg);
}

.application-menu-toggle:focus-visible,
.application-home-link:focus-visible,
.application-submenu a:focus-visible,
.mobile-navigation-toggle:focus-visible,
.user-menu-toggle:focus-visible,
.user-menu-item:focus-visible {
    outline: 2px solid var(--color-header-text);
    outline-offset: -2px;
}

.application-submenu {
    position: absolute;
    z-index: 10;
    top: calc(100% + 6px);
    left: 0;
    min-width: 220px;
    padding: 8px;
    border: 1px solid var(--color-header-border);
    border-radius: 6px;
    background: var(--color-header-background);
    box-shadow: var(--shadow-popover);
}

.application-menu:last-child .application-submenu {
    right: 0;
    left: auto;
}

.application-submenu a,
.application-submenu-empty {
    display: block;
    padding: 9px 10px;
}

.application-submenu a:hover {
    border-radius: 4px;
    background: var(--color-header-hover);
}

.application-submenu-empty {
    color: var(--color-header-muted);
    font-size: 0.875rem;
    white-space: nowrap;
}

.user-menu {
    position: relative;
    margin-left: auto;
}

.user-menu-toggle {
    display: flex;
    align-items: center;
    gap: 9px;
    padding: 9px 12px;
    border: 0;
    border-radius: 5px;
    color: var(--color-header-text);
    background: transparent;
    cursor: pointer;
}

.user-menu:hover .user-menu-toggle,
.user-menu:focus-within .user-menu-toggle,
.user-menu.is-open .user-menu-toggle {
    background: var(--color-header-hover);
}

.user-menu-caret {
    width: 0;
    height: 0;
    border-top: 5px solid currentColor;
    border-right: 4px solid transparent;
    border-left: 4px solid transparent;
    transition: transform 120ms ease-in-out;
}

.user-menu-toggle[aria-expanded="true"] .user-menu-caret {
    transform: rotate(180deg);
}

.user-menu-dropdown {
    position: absolute;
    z-index: 10;
    top: calc(100% + 6px);
    right: 0;
    min-width: 240px;
    padding: 8px;
    border: 1px solid var(--color-header-border);
    border-radius: 6px;
    background: var(--color-header-background);
    box-shadow: var(--shadow-popover);
}

.user-menu-item {
    display: flex;
    width: 100%;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    padding: 9px 10px;
    border: 0;
    border-radius: 4px;
    color: var(--color-header-text);
    background: transparent;
    font: inherit;
    text-align: left;
}

a.user-menu-item:hover,
button.user-menu-item:hover {
    background: var(--color-header-hover);
}

.user-menu-item.is-disabled {
    color: var(--color-header-muted);
    cursor: not-allowed;
}

.user-menu-item small {
    color: var(--color-header-subtle);
    font-size: 0.75rem;
}

.user-menu-logout {
    margin: 8px 0 0;
    padding-top: 8px;
    border-top: 1px solid var(--color-header-border);
}

.theme-selector {
    display: grid;
    gap: 5px;
    padding: 9px 10px 12px;
    border-top: 1px solid var(--color-header-border);
    color: var(--color-header-text);
}

.theme-selector label {
    font-size: 0.78rem;
    font-weight: 700;
}

.theme-selector select {
    width: 100%;
    padding: 7px 9px;
    border: 1px solid var(--color-header-border);
    border-radius: 4px;
    color: var(--color-header-text);
    background: var(--color-header-hover);
    font: inherit;
}

.theme-selector-status {
    min-height: 1em;
    color: var(--color-warning-border);
    font-size: 0.72rem;
}

.user-menu-logout button {
    cursor: pointer;
}

@media (max-width: 960px) {
    .navigation {
        position: relative;
        flex-wrap: wrap;
        padding: 8px 16px;
        gap: 8px;
    }

    .portal-brand {
        flex: 1 1 0;
        min-width: 0;
        line-height: 44px;
        overflow: hidden;
        text-overflow: ellipsis;
        white-space: nowrap;
    }

    .mobile-navigation-toggle:not([hidden]) {
        display: inline-flex;
        align-items: center;
        justify-content: center;
    }

    .application-navigation {
        order: 3;
        flex: 0 0 100%;
        width: 100%;
        flex-direction: column;
        align-items: stretch;
    }

    .application-menu {
        display: grid;
        grid-template-columns: minmax(0, 1fr) 44px;
    }

    .application-home-link {
        min-width: 0;
        min-height: 44px;
        white-space: normal;
        overflow-wrap: anywhere;
    }

    .application-menu-toggle {
        width: 44px;
        min-height: 44px;
    }

    .application-submenu {
        position: static;
        grid-column: 1 / -1;
        min-width: 0;
        width: 100%;
        box-shadow: none;
    }

    .application-submenu a,
    .application-submenu-empty {
        min-height: 44px;
        white-space: normal;
        overflow-wrap: anywhere;
    }

    .user-menu {
        position: static;
        min-width: 0;
        max-width: min(32vw, 160px);
        margin-left: 0;
    }

    .user-menu-toggle {
        min-width: 44px;
        min-height: 44px;
        max-width: 100%;
    }

    .user-menu-toggle > span:first-child {
        min-width: 0;
        overflow: hidden;
        text-overflow: ellipsis;
        white-space: nowrap;
    }

    .user-menu-caret {
        flex-shrink: 0;
    }

    .user-menu-dropdown {
        right: 16px;
        min-width: 0;
        width: min(280px, calc(100% - 32px));
        max-height: calc(100vh - 80px);
        max-height: calc(100dvh - 80px);
        overflow: auto;
        overflow-wrap: anywhere;
    }

    .user-menu-item {
        min-height: 44px;
    }
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 24px;
}

.login-panel {
    max-width: 400px;
    margin: 60px auto;
    padding: 24px;
    background: var(--color-surface);
    border: 1px solid var(--color-border-subtle);
    border-radius: 8px;
}

.login-panel form {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

input,
button {
    padding: 10px;
    font: inherit;
}

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

input,
select,
textarea {
    border-color: var(--color-border);
    background: var(--color-input-background);
}

textarea {
    font: inherit;
}

.tools-grid {
    display: grid;
    grid-template-columns:
        repeat(auto-fit, minmax(min(240px, 100%), 1fr));
    gap: 20px;
}

.tool-card {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
    padding: 20px;
    background: var(--color-surface);
    border: 1px solid var(--color-border-subtle);
    border-radius: 8px;
}

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

.tool-card-action {
    display: inline-flex;
    min-height: 44px;
    align-items: center;
    margin-top: auto;
    padding: 10px;
    border: 1px solid var(--color-primary-border);
    border-radius: 5px;
    color: var(--color-primary-text);
    background: var(--color-primary);
    text-decoration: none;
}

.tool-card-action:hover {
    background: var(--color-primary-hover);
}

.disabled-label {
    color: var(--color-disabled);
}

.empty-state {
    padding: 20px;
    background: var(--color-surface);
    border: 1px solid var(--color-border-subtle);
    border-radius: 8px;
}

.alert {
    padding: 12px;
    margin-bottom: 16px;
    border: 1px solid var(--color-border);
    background: var(--color-surface);
}

.alert-danger {
    color: var(--color-danger);
    border-color: var(--color-danger-border);
    background: var(--color-danger-surface);
}

.alert-success {
    color: var(--color-success);
    border-color: var(--color-success-border);
    background: var(--color-success-surface);
}

.alert-warning {
    color: var(--color-warning);
    border-color: var(--color-warning-border);
    background: var(--color-warning-surface);
}

.alert-info {
    color: var(--color-info);
    border-color: var(--color-info-border);
    background: var(--color-info-surface);
}

.page-heading {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 24px;
    margin-bottom: 24px;
}

.table-wrapper {
    overflow-x: auto;
    background: var(--color-surface);
    border: 1px solid var(--color-border-subtle);
    border-radius: 8px;
}

.permissions-table,
.audit-table {
    width: 100%;
    border-collapse: collapse;
}

.permissions-table th,
.permissions-table td,
.audit-table th,
.audit-table td {
    padding: 12px;
    border-bottom: 1px solid var(--color-border-subtle);
    text-align: left;
    vertical-align: middle;
}

.permissions-table thead,
.audit-table thead {
    background: var(--color-surface-secondary);
}

.role-label {
    display: block;
    margin-top: 4px;
    color: var(--color-text-muted);
    font-size: 0.8rem;
    font-weight: normal;
}

.permission-button {
    border: 1px solid;
    border-radius: 5px;
    cursor: pointer;
    background: var(--color-surface);
}

.permission-button.grant {
    color: var(--color-success);
    border-color: var(--color-success-border);
}

.permission-button.revoke {
    color: var(--color-danger);
    border-color: var(--color-danger-border);
}

.access-enabled {
    color: var(--color-success);
}

.audit-section {
    margin-top: 36px;
}

.audit-table {
    font-size: 0.9rem;
}

.converter-page {
    max-width: 980px;
    margin: 0 auto;
}

.converter-heading h1,
.converter-heading p {
    margin-top: 0;
}

.experimental-badge {
    display: inline-block;
    margin-left: 6px;
    padding: 4px 7px;
    border-radius: 4px;
    color: var(--color-warning);
    background: var(--color-warning-surface);
    font-size: 0.68rem;
    letter-spacing: 0.04em;
    vertical-align: middle;
}

.converter-form {
    display: flex;
    flex-direction: column;
    gap: 22px;
    padding: 24px;
    border: 1px solid var(--color-border-subtle);
    border-radius: 8px;
    background: var(--color-surface);
}

.form-field {
    display: flex;
    flex-direction: column;
    gap: 7px;
    font-weight: 700;
}

.form-field input,
.form-field textarea {
    width: 100%;
    border: 1px solid var(--color-border);
    border-radius: 5px;
    background: var(--color-input-background);
}

.form-field input:focus,
.form-field textarea:focus {
    border-color: var(--color-primary);
    outline: 2px solid var(--color-focus-ring);
}

.form-field textarea {
    min-height: 320px;
    padding: 12px;
    resize: vertical;
    font-family: ui-monospace, SFMono-Regular, Menlo, Monaco,
        Consolas, monospace;
    font-size: 0.9rem;
    font-weight: 400;
    line-height: 1.45;
}

.form-field small {
    color: var(--color-text-muted);
    font-size: 0.78rem;
    font-weight: 400;
}

.port-override-field {
    max-width: 320px;
}

.converter-settings {
    display: grid;
    grid-template-columns: repeat(2, minmax(180px, 1fr));
    gap: 18px;
}

.olt-address-group {
    margin: 0;
    padding: 18px;
    border: 1px solid var(--color-border-subtle);
    border-radius: 7px;
}

.olt-address-group legend {
    padding: 0 7px;
    font-weight: 700;
}

.olt-address-fields {
    display: flex;
    align-items: center;
    gap: 13px;
}

.compact-field {
    flex: 1 1 0;
    min-width: 0;
}

.address-separator {
    padding-top: 23px;
    color: var(--color-text-muted);
    font-size: 1.6rem;
}

.tooltip-trigger {
    position: relative;
    width: 20px;
    height: 20px;
    margin-left: 3px;
    padding: 0;
    border: 1px solid var(--color-border);
    border-radius: 50%;
    color: var(--color-text-muted);
    background: var(--color-surface);
    font-size: 0.75rem;
    font-weight: 700;
    line-height: 18px;
    cursor: help;
}

.tooltip-trigger::after {
    position: absolute;
    z-index: 20;
    bottom: calc(100% + 9px);
    left: 50%;
    width: 250px;
    padding: 9px 11px;
    border-radius: 5px;
    color: var(--color-header-text);
    background: var(--color-header-background);
    box-shadow: var(--shadow-popover);
    content: attr(data-tooltip);
    font-size: 0.78rem;
    font-weight: 400;
    line-height: 1.35;
    opacity: 0;
    pointer-events: none;
    text-align: left;
    transform: translate(-50%, 4px);
    transition: opacity 120ms ease, transform 120ms ease;
}

.tooltip-trigger:hover::after,
.tooltip-trigger:focus-visible::after {
    opacity: 1;
    transform: translate(-50%, 0);
}

.primary-button,
.secondary-button {
    border: 1px solid transparent;
    border-radius: 5px;
    cursor: pointer;
}

.primary-button {
    align-self: flex-start;
    color: var(--color-primary-text);
    border-color: var(--color-primary-border);
    background: var(--color-primary);
}

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

.secondary-button {
    color: var(--color-text);
    border-color: var(--color-border);
    background: var(--color-surface);
}

.modal-backdrop {
    position: fixed;
    z-index: 100;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 24px;
    background: rgb(0 0 0 / 58%);
}

.modal-backdrop[hidden] {
    display: none;
}

.config-modal {
    width: min(100%, 980px);
    max-height: calc(100vh - 48px);
    overflow: auto;
    padding: 22px;
    border-radius: 8px;
    color: var(--color-text);
    background: var(--color-surface);
    box-shadow: var(--shadow-modal);
}

.config-modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
    margin-bottom: 16px;
}

.config-modal-header h2 {
    margin: 0;
}

.modal-close {
    width: 40px;
    height: 40px;
    padding: 0;
    border: 0;
    border-radius: 5px;
    color: var(--color-text-muted);
    background: transparent;
    font-size: 1.8rem;
    line-height: 1;
    cursor: pointer;
}

.modal-close:hover {
    background: var(--color-hover);
}

.generated-config {
    width: 100%;
    min-height: 360px;
    padding: 13px;
    border: 1px solid var(--color-border);
    color: var(--color-text);
    background: var(--color-input-background);
    border-radius: 5px;
    resize: vertical;
    font-family: ui-monospace, SFMono-Regular, Menlo, Monaco,
        Consolas, monospace;
    font-size: 0.87rem;
    line-height: 1.45;
}

.config-modal-actions {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: 10px;
    margin-top: 16px;
}

.config-modal-actions .primary-button {
    align-self: auto;
}

.copy-status {
    margin-right: auto;
    color: var(--color-success);
}

@media (max-width: 560px) {
    .converter-settings {
        grid-template-columns: 1fr;
    }

    .olt-address-fields {
        align-items: flex-start;
        gap: 7px;
    }

    .address-separator {
        padding-top: 27px;
    }

    .config-modal-actions {
        align-items: stretch;
        flex-direction: column;
    }

    .copy-status {
        min-height: 1.2em;
        margin: 0;
    }
}