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

:root {
    --bg-body: #f0f4f8;
    --bg-card: #ffffff;
    --bg-input: #f7f9fc;
    --text-primary: #1a1a2e;
    --text-secondary: #6b7280;
    --accent: #667eea;
    --accent-hover: #5a6fd6;
    --accent-light: #eef1ff;
    --border: #e5e7eb;
    --border-focus: #667eea;
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.06);
    --shadow-md: 0 4px 12px rgba(0,0,0,0.08);
    --radius-sm: 8px;
    --radius-md: 12px;
    --success: #059669;
    --success-bg: #ecfdf5;
    --success-border: #a7f3d0;
    --error: #dc2626;
    --error-bg: #fef2f2;
    --error-border: #fecaca;
    --warning-bg: #fffbeb;
    --warning-text: #b45309;
    --warning-border: #fde68a;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", sans-serif;
    background: var(--bg-body);
    color: var(--text-primary);
    min-height: 100vh;
    overflow-x: hidden;
}

.admin-app {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

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

.admin-login[hidden],
.admin-app[hidden] {
    display: none;
}

.admin-login-card {
    width: min(420px, 100%);
    padding: 22px;
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    background: var(--bg-card);
    box-shadow: var(--shadow-md);
    display: grid;
    gap: 16px;
}

.login-header {
    display: flex;
    gap: 12px;
    align-items: center;
}

.login-header h1 {
    font-size: 18px;
    line-height: 1.2;
}

.login-header p {
    margin-top: 4px;
    color: var(--text-secondary);
    font-size: 12px;
}

.login-submit {
    width: 100%;
}

/* ==================== Header ==================== */

.admin-header {
    background: var(--bg-card);
    border-bottom: 1px solid var(--border);
    padding: 16px 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    position: sticky;
    top: 0;
    z-index: 10;
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 10px;
}

.header-left {
    display: flex;
    align-items: center;
    gap: 10px;
}

.header-icon {
    color: var(--accent);
}

.header-left h1 {
    font-size: 18px;
    font-weight: 700;
}

.btn-language {
    min-width: 42px;
    height: 34px;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    background: var(--bg-input);
    color: var(--text-secondary);
    font-size: 12px;
    font-weight: 800;
    cursor: pointer;
}

.btn-language:hover {
    background: var(--accent-light);
    color: var(--accent);
    border-color: var(--accent);
}

.btn-back {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 8px 16px;
    background: var(--accent-light);
    color: var(--accent);
    border: none;
    border-radius: var(--radius-sm);
    font-size: 13px;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.2s;
}

.btn-back:hover {
    background: var(--accent);
    color: white;
}

/* ==================== Content ==================== */

.admin-content {
    flex: 1;
    padding: 24px;
}

.settings-container {
    max-width: 1120px;
    width: 100%;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 20px;
}

/* ==================== Card ==================== */

.settings-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
    overflow: hidden;
}

.card-header {
    padding: 18px 20px 0;
}

.card-header h2 {
    font-size: 15px;
    font-weight: 700;
}

.card-desc {
    font-size: 12px;
    color: var(--text-secondary);
    margin-top: 4px;
}

.provider-title {
    display: flex;
    align-items: center;
    gap: 10px;
    min-width: 0;
}

.provider-badge {
    min-width: 0;
    font-size: 11px;
    font-weight: 600;
    padding: 2px 10px;
    border-radius: 20px;
    background: var(--bg-input);
    color: var(--text-secondary);
    border: 1px solid var(--border);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.provider-badge.configured {
    background: var(--success-bg);
    color: var(--success);
    border-color: var(--success-border);
}

.provider-badge.pending {
    background: var(--warning-bg);
    color: var(--warning-text);
    border-color: var(--warning-border);
}

.provider-badge.error {
    background: var(--error-bg);
    color: var(--error);
    border-color: var(--error-border);
}

.card-body {
    padding: 16px 20px 20px;
}

.basic-grid {
    display: grid;
    grid-template-columns: minmax(220px, 0.7fr) minmax(260px, 1fr);
    gap: 16px;
    align-items: end;
}

.config-hint {
    padding: 12px 14px;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    background: var(--bg-input);
    display: grid;
    gap: 4px;
}

.config-hint strong {
    font-size: 13px;
}

.config-hint span {
    color: var(--text-secondary);
    font-size: 12px;
    line-height: 1.5;
}

.cost-toolbar {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
    gap: 12px;
    align-items: start;
}

.cost-filter {
    margin-top: 14px;
    padding: 12px;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    background: var(--bg-input);
    display: flex;
    align-items: end;
    justify-content: space-between;
    gap: 12px;
}

.cost-date-fields {
    display: flex;
    align-items: end;
    gap: 10px;
    flex-wrap: wrap;
}

.cost-date-fields label {
    display: grid;
    gap: 5px;
    color: var(--text-secondary);
    font-size: 11px;
    font-weight: 800;
}

.cost-date-input {
    width: 150px;
    min-height: 36px;
    padding: 7px 9px;
    font-size: 12px;
}

.cost-range-buttons {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
    justify-content: flex-end;
}

.cost-range-button {
    min-height: 36px;
    padding: 7px 10px;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    background: var(--bg-card);
    color: var(--text-secondary);
    font-size: 12px;
    font-weight: 800;
    cursor: pointer;
}

.cost-range-button:hover,
.cost-range-button.active {
    border-color: var(--accent);
    background: var(--accent-light);
    color: var(--accent);
}

.cost-metrics {
    display: grid;
    grid-template-columns: repeat(5, minmax(0, 1fr));
    gap: 8px;
}

.cost-metric {
    min-height: 64px;
    padding: 10px 12px;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    background: var(--bg-input);
    display: grid;
    align-content: center;
    gap: 2px;
}

.cost-metric strong {
    min-width: 0;
    color: var(--text-primary);
    font-size: 18px;
    font-weight: 800;
    line-height: 1.15;
    overflow-wrap: anywhere;
}

.cost-metric span {
    color: var(--text-secondary);
    font-size: 11px;
    font-weight: 700;
}

.cost-chart-block {
    margin-top: 14px;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    background: var(--bg-card);
    overflow: hidden;
}

.cost-chart-head {
    padding: 12px 14px 0;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
}

.cost-chart-head h3 {
    font-size: 13px;
    font-weight: 800;
}

.cost-chart-head span {
    color: var(--text-secondary);
    font-family: "SF Mono", Menlo, Consolas, monospace;
    font-size: 11px;
}

.cost-chart {
    min-height: 260px;
    padding: 8px 12px 12px;
}

.cost-chart-svg {
    display: block;
    width: 100%;
    height: 240px;
}

.cost-chart-grid {
    stroke: var(--border);
    stroke-width: 1;
}

.cost-chart-y,
.cost-chart-x {
    fill: var(--text-secondary);
    font-size: 10px;
    font-family: "SF Mono", Menlo, Consolas, monospace;
}

.cost-chart-x.end {
    text-anchor: end;
}

.cost-chart-line {
    fill: none;
    stroke-width: 2.4;
    stroke-linecap: round;
    stroke-linejoin: round;
}

.cost-chart-line.total,
.cost-chart-dot,
.cost-chart-legend i.total {
    stroke: var(--accent);
    background: var(--accent);
}

.cost-chart-line.input,
.cost-chart-legend i.input {
    stroke: var(--success);
    background: var(--success);
}

.cost-chart-line.output,
.cost-chart-legend i.output {
    stroke: var(--warning-text);
    background: var(--warning-text);
}

.cost-chart-line.input,
.cost-chart-line.output {
    opacity: 0.72;
}

.cost-chart-dot {
    fill: var(--bg-card);
    stroke-width: 2;
}

.cost-chart-legend {
    display: flex;
    gap: 14px;
    flex-wrap: wrap;
    padding: 0 46px 4px;
    color: var(--text-secondary);
    font-size: 11px;
    font-weight: 700;
}

.cost-chart-legend span {
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

.cost-chart-legend i {
    width: 18px;
    height: 3px;
    border-radius: 2px;
    display: inline-block;
}

.cost-chart-empty {
    min-height: 220px;
    display: grid;
    place-items: center;
    color: var(--text-secondary);
    font-size: 12px;
}

.cost-chart-empty.error {
    color: var(--error);
    background: var(--error-bg);
}

.cost-table-group {
    display: grid;
    gap: 18px;
    margin-top: 18px;
}

.cost-table-block h3 {
    margin-bottom: 8px;
    font-size: 13px;
    font-weight: 800;
}

.cost-table-wrap {
    width: 100%;
    overflow-x: auto;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
}

.cost-table {
    width: 100%;
    min-width: 980px;
    border-collapse: collapse;
    background: var(--bg-card);
}

.member-table {
    min-width: 640px;
}

.cost-management-card .cost-table {
    min-width: 1080px;
}

.cost-management-card .cost-table-block:last-child .cost-table {
    min-width: 1180px;
}

.cost-table th,
.cost-table td {
    padding: 10px 12px;
    border-bottom: 1px solid var(--border);
    text-align: left;
    font-size: 12px;
    vertical-align: top;
    white-space: nowrap;
}

.cost-table th {
    background: var(--bg-input);
    color: var(--text-secondary);
    font-size: 11px;
    font-weight: 800;
    text-transform: uppercase;
}

.cost-table tr:last-child td {
    border-bottom: 0;
}

.cost-account-cell {
    display: grid;
    gap: 2px;
    min-width: 120px;
}

.cost-account-cell span {
    color: var(--text-primary);
    font-weight: 700;
}

.cost-account-cell small {
    color: var(--text-secondary);
    font-family: "SF Mono", Menlo, Consolas, monospace;
    font-size: 10px;
}

.cost-password {
    display: inline-block;
    max-width: 220px;
    padding: 2px 6px;
    border: 1px solid var(--border);
    border-radius: 6px;
    background: var(--bg-input);
    color: var(--text-primary);
    font-family: "SF Mono", Menlo, Consolas, monospace;
    font-size: 11px;
    overflow: hidden;
    text-overflow: ellipsis;
    vertical-align: top;
}

.cost-password-wrap {
    display: flex;
    align-items: center;
    gap: 6px;
}

.cost-password-action {
    min-height: 26px;
    padding: 4px 8px;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    background: var(--bg-input);
    color: var(--text-secondary);
    font-size: 11px;
    font-weight: 700;
    cursor: pointer;
}

.cost-password-action:hover {
    border-color: var(--accent);
    color: var(--accent);
    background: var(--accent-light);
}

.cost-note {
    margin-top: 8px;
    color: var(--text-secondary);
    font-size: 11px;
    line-height: 1.45;
}

.cost-note[hidden] {
    display: none;
}

.cost-muted,
.cost-empty {
    color: var(--text-secondary);
}

.cost-empty {
    text-align: center;
    font-style: italic;
}

.cost-empty.error {
    color: var(--error);
    background: var(--error-bg);
}

.provider-tabs {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 8px;
    margin-bottom: 16px;
}

.provider-tab {
    min-height: 54px;
    padding: 9px 10px;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    background: var(--bg-input);
    color: var(--text-primary);
    display: grid;
    gap: 4px;
    text-align: left;
    cursor: pointer;
}

.provider-tab.active {
    border-color: var(--accent);
    background: var(--accent-light);
}

.provider-tab span {
    min-width: 0;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    font-size: 13px;
    font-weight: 800;
}

.provider-tab-status {
    color: var(--text-secondary);
    font-size: 11px;
    font-weight: 700;
}

.provider-tab-status.configured {
    color: var(--success);
}

.provider-tab-status.pending {
    color: var(--warning-text);
}

.provider-tab-status.error {
    color: var(--error);
}

.provider-panel {
    display: none;
}

.provider-panel.active {
    display: block;
}

.provider-panel-head {
    display: flex;
    justify-content: space-between;
    gap: 16px;
    align-items: flex-start;
    padding: 14px;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    background: var(--bg-input);
    margin-bottom: 16px;
}

.provider-panel-head h3 {
    font-size: 15px;
    margin-bottom: 4px;
}

.provider-panel-head p {
    color: var(--text-secondary);
    font-size: 12px;
    line-height: 1.45;
}

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

.provider-actions {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    flex-wrap: wrap;
}

.test-result.compact {
    margin-top: 0;
    flex: 1;
    min-width: 220px;
}

.advanced-settings {
    overflow: visible;
}

.advanced-settings summary {
    min-height: 58px;
    padding: 16px 20px;
    cursor: pointer;
    display: grid;
    gap: 4px;
    font-weight: 800;
}

.advanced-settings summary small {
    color: var(--text-secondary);
    font-size: 12px;
    font-weight: 500;
}

.advanced-settings[open] summary {
    border-bottom: 1px solid var(--border);
}

/* ==================== Form ==================== */

.form-group {
    margin-bottom: 14px;
}

.form-group label {
    display: block;
    font-size: 12px;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: 6px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.optional {
    font-weight: 400;
    text-transform: none;
    letter-spacing: 0;
    color: #9ca3af;
}

.form-input,
.form-select {
    min-width: 0;
    width: 100%;
    padding: 10px 12px;
    background: var(--bg-input);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    font-size: 13px;
    color: var(--text-primary);
    outline: none;
    transition: border-color 0.2s;
    font-family: inherit;
}

.form-input:focus,
.form-select:focus {
    border-color: var(--border-focus);
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

.form-input::placeholder {
    color: #c0c7d0;
}

.form-textarea {
    min-height: 96px;
    resize: vertical;
    line-height: 1.5;
}

.form-select {
    cursor: pointer;
}

.input-with-action {
    display: flex;
    gap: 6px;
}

.input-with-action .form-input {
    flex: 1;
}

.role-config-layout {
    display: grid;
    grid-template-columns: 170px 1fr;
    gap: 16px;
}

.role-list-panel {
    display: flex;
    flex-direction: column;
    gap: 10px;
    min-width: 0;
}

.role-list {
    display: grid;
    gap: 8px;
    max-height: 440px;
    overflow-y: auto;
}

.role-list-item {
    min-height: 54px;
    padding: 6px;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    background: var(--bg-input);
    color: var(--text-primary);
    display: grid;
    grid-template-columns: minmax(0, 1fr) 28px;
    gap: 6px;
    align-items: center;
}

.role-list-item.active {
    border-color: var(--accent);
    background: var(--accent-light);
}

.role-list-select {
    min-width: 0;
    border: 0;
    background: transparent;
    color: inherit;
    display: grid;
    gap: 2px;
    text-align: left;
    cursor: pointer;
}

.role-list-select span {
    font-size: 13px;
    font-weight: 700;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.role-list-select small,
.role-empty {
    color: var(--text-secondary);
    font-size: 11px;
    line-height: 1.35;
}

.role-list-delete,
.role-list-lock {
    width: 28px;
    height: 28px;
}

.role-list-delete {
    border: 1px solid transparent;
    border-radius: var(--radius-sm);
    background: transparent;
    color: var(--text-secondary);
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

.role-list-delete:hover {
    border-color: rgba(248, 113, 113, 0.35);
    background: rgba(248, 113, 113, 0.12);
    color: var(--error);
}

.role-editor {
    min-width: 0;
}

.role-example-panel {
    margin-bottom: 16px;
    padding: 12px;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    background: rgba(255, 255, 255, 0.02);
}

.role-example-head {
    margin-bottom: 8px;
    color: var(--text-primary);
    font-size: 12px;
    font-weight: 800;
}

.role-example-list {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 8px;
}

.role-example-button {
    min-height: 76px;
    padding: 9px;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    background: var(--bg-input);
    color: var(--text-primary);
    cursor: pointer;
    display: grid;
    gap: 4px;
    text-align: left;
}

.role-example-button:hover {
    border-color: var(--accent);
    background: var(--accent-light);
}

.role-example-button span {
    font-size: 12px;
    font-weight: 800;
}

.role-example-button small {
    color: var(--text-secondary);
    font-size: 11px;
    line-height: 1.35;
}

.role-editor-hint {
    margin-bottom: 12px;
    padding: 9px 10px;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    background: var(--bg-input);
    color: var(--text-secondary);
    font-size: 12px;
    line-height: 1.45;
}

.role-editor-hint[hidden] {
    display: none;
}

.toggle-row,
.role-actions {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 10px;
}

.toggle-row {
    margin-bottom: 14px;
}

.toggle-row label {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    color: var(--text-secondary);
    font-size: 12px;
    font-weight: 700;
}

.btn-small {
    min-height: 34px;
    justify-content: center;
}

.btn-danger {
    padding: 10px 16px;
    border: 1px solid var(--error-border);
    border-radius: var(--radius-sm);
    background: var(--error-bg);
    color: var(--error);
    font-size: 13px;
    font-weight: 700;
    cursor: pointer;
}

.btn-danger:disabled {
    opacity: 0.45;
    cursor: not-allowed;
}

.btn-toggle-vis {
    padding: 8px 10px;
    background: var(--bg-input);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    cursor: pointer;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    transition: all 0.15s;
}

.btn-toggle-vis:hover {
    background: var(--accent-light);
    color: var(--accent);
    border-color: var(--accent);
}

/* ==================== Model Select Row ==================== */

.model-select-row {
    display: flex;
    gap: 6px;
}

.model-select-row .model-dropdown {
    flex: 1;
}

.btn-fetch-models {
    padding: 8px 12px;
    background: var(--bg-input);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    cursor: pointer;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    transition: all 0.15s;
    flex-shrink: 0;
}

.btn-fetch-models:hover {
    background: var(--accent-light);
    color: var(--accent);
    border-color: var(--accent);
}

.btn-fetch-models:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.btn-fetch-models.loading svg {
    animation: spin 1s linear infinite;
}

@keyframes spin {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

.fetch-status {
    margin-top: 4px;
    font-size: 11px;
    color: var(--text-secondary);
    display: none;
}

.fetch-status.visible {
    display: block;
}

.fetch-status.error {
    color: var(--error);
}

/* ==================== Model List ==================== */

.model-list {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    margin-bottom: 10px;
    min-height: 28px;
}

.model-tag {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 4px 6px 4px 10px;
    background: var(--accent-light);
    border: 1px solid #d4d9f7;
    border-radius: 6px;
    font-size: 12px;
    color: var(--text-primary);
    font-family: "SF Mono", Menlo, Consolas, monospace;
    line-height: 1.3;
    max-width: 100%;
}

.model-tag-text {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.model-tag-remove {
    background: none;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    font-size: 14px;
    line-height: 1;
    padding: 0 2px;
    border-radius: 3px;
    transition: all 0.15s;
    flex-shrink: 0;
}

.model-tag-remove:hover {
    color: var(--error);
    background: var(--error-bg);
}

.no-models {
    font-size: 12px;
    color: var(--text-secondary);
    font-style: italic;
    padding: 4px 0;
}

.model-add-row {
    display: flex;
    gap: 6px;
}

.model-add-row .form-input {
    flex: 1;
    min-width: 0;
}

.btn-add-model {
    padding: 8px 12px;
    background: var(--accent-light);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    cursor: pointer;
    color: var(--accent);
    display: flex;
    align-items: center;
    transition: all 0.15s;
    flex-shrink: 0;
}

.btn-add-model:hover {
    background: var(--accent);
    color: white;
    border-color: var(--accent);
}

/* ==================== Test Button ==================== */

.btn-test {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 16px;
    background: var(--bg-input);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    font-size: 12px;
    font-weight: 600;
    color: var(--text-secondary);
    cursor: pointer;
    transition: all 0.2s;
}

.btn-test:hover {
    background: var(--accent-light);
    color: var(--accent);
    border-color: var(--accent);
}

.btn-test:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.btn-test.testing {
    opacity: 0.7;
    cursor: wait;
}

.test-result {
    margin-top: 10px;
    font-size: 12px;
    padding: 8px 12px;
    border-radius: var(--radius-sm);
    display: none;
}

.test-result.success {
    display: block;
    background: var(--success-bg);
    color: var(--success);
    border: 1px solid var(--success-border);
}

.test-result.error {
    display: block;
    background: var(--error-bg);
    color: var(--error);
    border: 1px solid var(--error-border);
}

/* ==================== Save ==================== */

.save-area {
    text-align: center;
    padding: 10px 0 40px;
}

.btn-save {
    padding: 12px 40px;
    background: var(--accent);
    color: white;
    border: none;
    border-radius: var(--radius-sm);
    font-size: 14px;
    font-weight: 700;
    cursor: pointer;
    transition: all 0.2s;
    box-shadow: var(--shadow-sm);
}

.btn-save:hover {
    background: var(--accent-hover);
    box-shadow: var(--shadow-md);
    transform: translateY(-1px);
}

.btn-save:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none;
}

.save-result {
    margin-top: 12px;
    font-size: 13px;
    font-weight: 600;
    display: none;
}

.save-result.success {
    display: block;
    color: var(--success);
}

.save-result.error {
    display: block;
    color: var(--error);
}

/* ==================== Responsive ==================== */

@media (max-width: 768px) {
    body {
        min-height: 100dvh;
    }

    .admin-content {
        padding: 14px;
    }

    .admin-header {
        padding: calc(12px + env(safe-area-inset-top)) 14px 12px;
    }

    .card-header {
        padding: 14px 16px 0;
    }

    .card-body {
        padding: 12px 16px 16px;
    }

    .role-config-layout {
        grid-template-columns: 1fr;
    }

    .role-list {
        max-height: 220px;
    }

    .role-example-list {
        grid-template-columns: 1fr;
    }

    .header-actions {
        gap: 8px;
    }

    .btn-back {
        padding: 8px 10px;
    }

    .basic-grid,
    .provider-field-grid {
        grid-template-columns: 1fr;
    }

    .cost-toolbar {
        grid-template-columns: 1fr;
    }

    .cost-filter {
        align-items: stretch;
        flex-direction: column;
    }

    .cost-date-fields,
    .cost-range-buttons {
        width: 100%;
    }

    .cost-date-fields label {
        flex: 1 1 140px;
    }

    .cost-date-input {
        width: 100%;
    }

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

    .cost-chart-head {
        align-items: flex-start;
        flex-direction: column;
        gap: 5px;
    }

    .cost-chart-legend {
        padding: 0 12px 4px;
    }

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

    .provider-panel-head {
        flex-direction: column;
        gap: 10px;
    }

    .provider-actions,
    .role-actions,
    .model-add-row,
    .model-select-row,
    .input-with-action {
        align-items: stretch;
    }

    .form-input,
    .form-select,
    .btn-test,
    .btn-danger,
    .btn-save {
        min-height: 42px;
    }

    .form-input,
    .form-select {
        font-size: 16px;
    }
}

@media (max-width: 460px) {
    .admin-header {
        align-items: flex-start;
        gap: 12px;
        flex-direction: column;
    }

    .header-actions {
        width: 100%;
        justify-content: space-between;
        flex-wrap: wrap;
    }

    .provider-tabs {
        grid-template-columns: 1fr;
    }

    .cost-metrics {
        grid-template-columns: 1fr;
    }

    .admin-content {
        padding: 10px;
    }

    .settings-container {
        gap: 12px;
    }

    .settings-card {
        border-radius: var(--radius-sm);
    }

    .provider-title {
        align-items: flex-start;
        flex-direction: column;
        gap: 6px;
    }

    .provider-badge {
        max-width: 100%;
    }

    .provider-panel-head {
        padding: 12px;
    }

    .input-with-action,
    .model-select-row,
    .model-add-row {
        flex-direction: column;
    }

    .btn-toggle-vis,
    .btn-fetch-models,
    .btn-add-model,
    .btn-test,
    .btn-danger,
    .btn-save,
    .btn-back,
    .btn-language {
        width: 100%;
        justify-content: center;
    }

    .btn-save {
        padding-inline: 18px;
    }

    .save-area {
        padding-bottom: calc(28px + env(safe-area-inset-bottom));
    }
}