/* =========================================================
   MSMail AI Studio shared foundation
   ========================================================= */

.ai-nav-group {
    display: grid;
}

.ai-nav-toggle {
    width: 100%;
    border: 0;
    background: transparent;
    text-align: left;
    cursor: pointer;
}

.ai-nav-toggle .ai-nav-chevron {
    width: auto;
    min-width: auto;
    margin-left: auto;
    font-size: 10px;
    transition: transform 160ms ease;
}

.ai-nav-group.is-open .ai-nav-chevron {
    transform: rotate(180deg);
}

.ai-nav-children {
    display: grid;
    max-height: 0;
    overflow: hidden;
    opacity: 0;
    transition:
        max-height 220ms ease,
        opacity 160ms ease;
}

.ai-nav-group.is-open .ai-nav-children {
    max-height: 620px;
    opacity: 1;
}

.ai-nav-child {
    min-height: 39px;
    margin-left: 13px;
    padding-left: 16px;
    border-left: 1px solid var(--line);
    border-radius: 0 10px 10px 0;
}

.ai-nav-child .nav-icon {
    width: 28px;
    min-width: 28px;
    font-size: 11px;
}

body.sidebar-is-collapsed .ai-nav-toggle .ai-nav-chevron,
body.sidebar-is-collapsed .ai-nav-children {
    display: none;
}

/* AI page heading and tabs */

.ai-page-heading {
    position: relative;
}

.ai-page-heading::after {
    position: absolute;
    top: 4px;
    right: 0;
    width: 100px;
    height: 100px;
    border-radius: 50%;
    background: radial-gradient(
        circle,
        rgba(139, 92, 246, 0.13),
        transparent 68%
    );
    content: "";
    pointer-events: none;
}

.ai-page-tabs {
    display: flex;
    gap: 6px;
    margin: -5px 0 20px;
    padding: 5px;
    overflow-x: auto;
    border: 1px solid var(--line);
    border-radius: 14px;
    background: var(--surface);
    scrollbar-width: thin;
}

.ai-page-tabs a {
    display: inline-flex;
    min-height: 38px;
    flex: 0 0 auto;
    align-items: center;
    gap: 7px;
    padding: 0 11px;
    border-radius: 10px;
    color: var(--muted);
    font-size: 10px;
    font-weight: 700;
    text-decoration: none;
    white-space: nowrap;
}

.ai-page-tabs a:hover {
    background: var(--surface-2);
    color: var(--text);
}

.ai-page-tabs a.active {
    background: linear-gradient(
        135deg,
        rgba(86, 111, 245, 0.14),
        rgba(139, 92, 246, 0.14)
    );
    color: var(--primary);
}

/* Shared AI metrics */

.ai-metric-grid {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 14px;
    margin-bottom: 18px;
}

.ai-metric-grid2 {
    display: grid;
    grid-template-columns: repeat(5, minmax(0, 1fr));
    gap: 14px;
    margin-bottom: 18px;
}

.ai-metric-card {
    display: flex;
    min-width: 0;
    align-items: center;
    gap: 13px;
    padding: 16px;
    border: 1px solid var(--line);
    border-radius: 16px;
    background: var(--surface);
}

.ai-metric-icon {
    display: grid;
    width: 43px;
    min-width: 43px;
    height: 43px;
    place-items: center;
    border-radius: 13px;
    background: var(--primary-soft);
    color: var(--primary);
}

.ai-metric-icon.purple {
    background: rgba(139, 92, 246, 0.12);
    color: var(--purple);
}

.ai-metric-icon.green {
    background: rgba(22, 163, 106, 0.12);
    color: var(--green);
}

.ai-metric-icon.orange {
    background: rgba(234, 139, 39, 0.12);
    color: var(--orange);
}

.ai-metric-copy {
    display: grid;
    min-width: 0;
}

.ai-metric-copy small,
.ai-metric-copy span {
    overflow: hidden;
    color: var(--muted);
    font-size: 9px;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.ai-metric-copy strong {
    font-size: 22px;
}

/* Provider and model cards */

.ai-card-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 14px;
}

.ai-card {
    min-width: 0;
    overflow: hidden;
    border: 1px solid var(--line);
    border-radius: 16px;
    background: var(--surface);
}

.ai-card-header {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 15px;
    border-bottom: 1px solid var(--line);
}

.ai-card-icon {
    display: grid;
    width: 42px;
    min-width: 42px;
    height: 42px;
    place-items: center;
    border-radius: 13px;
    background: var(--surface-2);
    font-size: 17px;
}

.ai-card-title {
    display: grid;
    min-width: 0;
    flex: 1;
}

.ai-card-title strong,
.ai-card-title small {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.ai-card-title small {
    color: var(--muted);
    font-size: 9px;
}

.ai-card-body {
    display: grid;
    gap: 12px;
    padding: 15px;
}

/* Status */

.ai-status {
    display: inline-flex;
    width: fit-content;
    align-items: center;
    gap: 6px;
    padding: 5px 8px;
    border-radius: 999px;
    background: var(--surface-2);
    color: var(--muted);
    font-size: 9px;
    font-weight: 800;
    text-transform: uppercase;
}

.ai-status::before {
    width: 7px;
    height: 7px;
    border-radius: 50%;
    background: currentColor;
    content: "";
}

.ai-status.online,
.ai-status.success,
.ai-status.active {
    background: rgba(22, 163, 106, 0.11);
    color: var(--green);
}

.ai-status.warning,
.ai-status.testing {
    background: rgba(234, 139, 39, 0.12);
    color: var(--orange);
}

.ai-status.error,
.ai-status.offline,
.ai-status.failed {
    background: rgba(227, 76, 76, 0.11);
    color: var(--red);
}

/* Toolbars and filters */

.ai-toolbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    padding: 14px 16px;
    border-bottom: 1px solid var(--line);
}

.ai-toolbar-left,
.ai-toolbar-right {
    display: flex;
    min-width: 0;
    align-items: center;
    gap: 9px;
}

.ai-search {
    position: relative;
    display: flex;
    min-width: 250px;
    align-items: center;
}

.ai-search i {
    position: absolute;
    left: 12px;
    color: var(--muted);
}

.ai-search input {
    width: 100%;
    min-height: 40px;
    padding: 0 12px 0 37px;
    border: 1px solid var(--line);
    border-radius: 11px;
    outline: 0;
    background: var(--surface-2);
    color: var(--text);
}

.ai-search input:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(86, 111, 245, 0.11);
}

/* Empty and loading states */

.ai-empty-state,
.ai-error-state {
    display: grid;
    justify-items: center;
    gap: 8px;
    padding: 48px 20px;
    color: var(--muted);
    text-align: center;
}

.ai-empty-state > span,
.ai-error-state > span {
    display: grid;
    width: 54px;
    height: 54px;
    place-items: center;
    border-radius: 17px;
    background: var(--surface-2);
    color: var(--primary);
    font-size: 20px;
}

.ai-error-state > span {
    color: var(--red);
}

.ai-empty-state h3,
.ai-error-state h3 {
    margin: 4px 0 0;
    color: var(--text);
}

.ai-empty-state p,
.ai-error-state p {
    max-width: 450px;
    margin: 0;
}

.ai-loading-overlay {
    position: fixed;
    inset: 0;
    z-index: 3000;
    display: grid;
    place-items: center;
    background: rgba(5, 11, 22, 0.62);
    backdrop-filter: blur(4px);
}

.ai-loading-overlay[hidden] {
    display: none;
}

.ai-loading-card {
    display: grid;
    min-width: 240px;
    justify-items: center;
    gap: 12px;
    padding: 24px;
    border: 1px solid var(--line);
    border-radius: 18px;
    background: var(--surface);
    box-shadow: var(--shadow);
}

.ai-spinner {
    width: 34px;
    height: 34px;
    border: 3px solid var(--surface-3);
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: ai-spin 700ms linear infinite;
}

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

/* Toast */

.ai-toast-region {
    position: fixed;
    top: 82px;
    right: 18px;
    z-index: 3100;
    display: grid;
    width: min(360px, calc(100vw - 36px));
    gap: 9px;
}

.ai-toast {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    padding: 13px 14px;
    border: 1px solid var(--line);
    border-radius: 13px;
    background: var(--surface);
    color: var(--text);
    box-shadow: var(--shadow);
    animation: ai-toast-in 180ms ease;
}

.ai-toast.success i {
    color: var(--green);
}

.ai-toast.error i {
    color: var(--red);
}

.ai-toast.warning i {
    color: var(--orange);
}

@keyframes ai-toast-in {
    from {
        transform: translateY(-8px);
        opacity: 0;
    }
}

/* Progress */

.ai-progress {
    height: 8px;
    overflow: hidden;
    border-radius: 999px;
    background: var(--surface-3);
}

.ai-progress > i {
    display: block;
    width: var(--progress, 0%);
    height: 100%;
    border-radius: inherit;
    background: linear-gradient(90deg, var(--primary), var(--purple));
}

/* Responsive */

@media (max-width: 1100px) {
    .ai-metric-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

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

@media (max-width: 720px) {
    .ai-page-tabs {
        margin-inline: -2px;
    }

    .ai-metric-grid,
    .ai-card-grid {
        grid-template-columns: 1fr;
    }

    .ai-toolbar,
    .ai-toolbar-left,
    .ai-toolbar-right {
        align-items: stretch;
        flex-direction: column;
    }

    .ai-search {
        width: 100%;
        min-width: 0;
    }
}

@media (prefers-reduced-motion: reduce) {
    .ai-nav-children,
    .ai-nav-chevron,
    .ai-toast,
    .ai-spinner {
        transition: none !important;
        animation: none !important;
    }
}


/* =========================================================
   Phase 2 — Core configuration
   ========================================================= */

.ai-page-actions,
.ai-inline-actions,
.ai-form-actions {
    display: flex;
    align-items: center;
    gap: 9px;
    flex-wrap: wrap;
}

.ai-page-heading {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 18px;
}

.ai-panel {
    overflow: hidden;
    margin-bottom: 18px;
    border: 1px solid var(--line);
    border-radius: 16px;
    background: var(--surface);
}

.ai-panel-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 14px;
    padding: 16px 18px;
    border-bottom: 1px solid var(--line);
}

.ai-panel-head h2,
.ai-panel-head h3 {
    margin: 0;
    font-size: 14px;
}

.ai-panel-head p {
    margin: 3px 0 0;
    color: var(--muted);
    font-size: 10px;
}

.ai-panel-body {
    padding: 18px;
}

.ai-form-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 14px;
}

.ai-form-grid .full {
    grid-column: 1 / -1;
}

.ai-field {
    display: grid;
    gap: 6px;
}

.ai-field label,
.ai-field > span {
    color: var(--muted);
    font-size: 10px;
    font-weight: 700;
}

.ai-field input,
.ai-field select,
.ai-field textarea {
    width: 100%;
    min-height: 42px;
    padding: 10px 12px;
    border: 1px solid var(--line);
    border-radius: 11px;
    outline: none;
    background: var(--surface-2);
    color: var(--text);
}

.ai-field textarea {
    min-height: 105px;
    resize: vertical;
}

.ai-field input:focus,
.ai-field select:focus,
.ai-field textarea:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(86,111,245,.11);
}

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

.ai-button {
    display: inline-flex;
    min-height: 40px;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 0 13px;
    border: 1px solid var(--line);
    border-radius: 11px;
    background: var(--surface-2);
    color: var(--text);
    cursor: pointer;
    font-size: 10px;
    font-weight: 800;
    text-decoration: none;
}

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

.ai-button.primary {
    border-color: var(--primary);
    background: var(--primary);
    color: #fff;
}

.ai-button.danger {
    color: var(--red);
}

.ai-button.small {
    min-height: 32px;
    padding: 0 10px;
    font-size: 9px;
}

.switch-row {
    display: flex;
    min-height: 50px;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    padding: 10px 12px;
    border: 1px solid var(--line);
    border-radius: 12px;
    background: var(--surface-2);
    cursor: pointer;
}

.switch-row > span {
    display: grid;
    gap: 2px;
}

.switch-row strong {
    font-size: 10px;
}

.switch-row small {
    color: var(--muted);
    font-size: 9px;
}

.switch-row input[type="checkbox"] {
    position: absolute;
    opacity: 0;
    pointer-events: none;
}

.switch-row i {
    position: relative;
    width: 40px;
    min-width: 40px;
    height: 22px;
    border-radius: 999px;
    background: var(--surface-3);
    transition: background 160ms ease;
}

.switch-row i::after {
    position: absolute;
    top: 3px;
    left: 3px;
    width: 16px;
    height: 16px;
    border-radius: 50%;
    background: #fff;
    box-shadow: 0 2px 8px rgba(0,0,0,.18);
    content: "";
    transition: transform 160ms ease;
}

.switch-row input[type="checkbox"]:checked + i {
    background: var(--green);
}

.switch-row input[type="checkbox"]:checked + i::after {
    transform: translateX(18px);
}

.ai-table-wrap {
    overflow-x: auto;
}

.ai-table {
    width: 100%;
    border-collapse: collapse;
}

.ai-table th {
    padding: 11px 14px;
    background: var(--surface-2);
    color: var(--muted);
    font-size: 9px;
    text-align: left;
    text-transform: uppercase;
    letter-spacing: .05em;
    white-space: nowrap;
}

.ai-table td {
    padding: 13px 14px;
    border-top: 1px solid var(--line);
    font-size: 10px;
    vertical-align: middle;
}

.ai-table tbody tr:hover {
    background: rgba(86,111,245,.035);
}

.ai-provider-mark {
    display: flex;
    align-items: center;
    gap: 10px;
    min-width: 170px;
}

.ai-provider-mark > span:first-child {
    display: grid;
    width: 36px;
    min-width: 36px;
    height: 36px;
    place-items: center;
    border-radius: 11px;
    background: var(--primary-soft);
    color: var(--primary);
}

.ai-provider-mark > span:last-child {
    display: grid;
}

.ai-provider-mark small,
.ai-muted {
    color: var(--muted);
}

.ai-code {
    display: inline-flex;
    padding: 4px 7px;
    border-radius: 7px;
    background: var(--surface-2);
    font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
    font-size: 9px;
}

.ai-health-list {
    display: grid;
    gap: 10px;
}

.ai-health-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 14px;
    padding: 12px;
    border: 1px solid var(--line);
    border-radius: 12px;
    background: var(--surface-2);
}

.ai-health-item > span:first-child {
    display: grid;
    gap: 2px;
}

.ai-health-item small {
    color: var(--muted);
    font-size: 9px;
}

.ai-two-column {
    display: grid;
    grid-template-columns: minmax(0, 1.55fr) minmax(280px, .75fr);
    gap: 18px;
}

.ai-secret-state {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    color: var(--muted);
    font-size: 9px;
}

.ai-secret-state.configured {
    color: var(--green);
}

.ai-validation-error {
    margin-bottom: 14px;
    padding: 12px 14px;
    border: 1px solid rgba(227,76,76,.25);
    border-radius: 12px;
    background: rgba(227,76,76,.08);
    color: var(--red);
    font-size: 10px;
}

@media (max-width: 900px) {
    .ai-two-column {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 720px) {
    .ai-page-heading,
    .ai-panel-head {
        align-items: stretch;
        flex-direction: column;
    }

    .ai-form-grid {
        grid-template-columns: 1fr;
    }

    .ai-form-grid .full {
        grid-column: auto;
    }

    .ai-page-actions,
    .ai-form-actions {
        width: 100%;
    }

    .ai-page-actions .ai-button,
    .ai-form-actions .ai-button {
        flex: 1;
    }
}