:root {
    --bg-primary: #0f1117;
    --bg-secondary: #161b22;
    --bg-tertiary: #21262d;
    --border: #30363d;
    --border-focus: #58a6ff;

    --text-primary: #c9d1d9;
    --text-secondary: #8b949e;

    --accent: #2f81f7;
    --accent-hover: #1f6feb;
    --success: #238636;
    --success-text: #3fb950;
    --danger: #da3633;
    --danger-hover: #f85149;
    --danger-text: #ff7b72;
    --warning-text: #d29922;

    --radius: 8px;
    --radius-sm: 6px;
}

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

body {
    font-family: 'Inter', system-ui, -apple-system, sans-serif;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    min-height: 100vh;
    line-height: 1.5;
}

/* ===== UTILS (SVG Icons) ===== */
.icon {
    width: 16px;
    height: 16px;
    fill: none;
    stroke: currentColor;
    stroke-width: 2;
    stroke-linecap: round;
    stroke-linejoin: round;
    display: inline-block;
    vertical-align: middle;
}

.icon-sm {
    width: 14px;
    height: 14px;
}

.icon-lg {
    width: 20px;
    height: 20px;
}

.icon-xl {
    width: 28px;
    height: 28px;
    stroke-width: 1.5;
}

/* ===== LOGIN ===== */
#loginOverlay {
    position: fixed;
    inset: 0;
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--bg-primary);
}

.login-card {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 32px;
    width: 340px;
    text-align: center;
}

.login-card .icon-container {
    color: var(--text-secondary);
    margin-bottom: 16px;
    display: flex;
    justify-content: center;
}

.login-card h2 {
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 8px;
}

.login-card p {
    color: var(--text-secondary);
    font-size: 13px;
    margin-bottom: 24px;
}

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

.input-field:focus {
    border-color: var(--border-focus);
}

.btn-primary {
    width: 100%;
    margin-top: 16px;
    padding: 10px;
    background-color: var(--accent);
    border: 1px solid rgba(240, 246, 252, 0.1);
    border-radius: var(--radius-sm);
    color: #fff;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: background-color 0.2s;
}

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

.btn-primary:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.login-error {
    color: var(--danger-text);
    font-size: 13px;
    margin-top: 12px;
    min-height: 20px;
}

/* ===== MAIN APP ===== */
#mainApp {
    display: none;
    max-width: 1800px;
    /* 拓展最大宽度拥抱宽屏 */
    margin: 0 auto;
    padding: 32px 24px;
}

/* Header */
.app-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 24px;
    padding-bottom: 16px;
    border-bottom: 1px solid var(--border);
}

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

.app-header h1 {
    font-size: 20px;
    font-weight: 600;
    letter-spacing: -0.5px;
}

.btn-outline {
    padding: 6px 12px;
    background-color: transparent;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-size: 13px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

.btn-outline:hover {
    background-color: var(--bg-tertiary);
    border-color: var(--text-secondary);
}

/* Layout */
.layout-top {
    display: grid;
    grid-template-columns: 340px minmax(400px, 1fr) minmax(420px, 480px);
    gap: 24px;
    margin-bottom: 24px;
    align-items: stretch;
    height: calc(100vh - 140px);
    min-height: 600px;
}

.layout-top>.panel,
.layout-top>.layout-col {
    min-height: 0;
}

.layout-col {
    display: flex;
    flex-direction: column;
    gap: 24px;
    overflow-y: auto;
    min-height: 0;
    padding-right: 4px;
}

.layout-col::-webkit-scrollbar {
    width: 4px;
}

.layout-col::-webkit-scrollbar-thumb {
    background: var(--border);
    border-radius: 4px;
}

@media (max-width: 1400px) {
    .layout-top {
        grid-template-columns: 340px 1fr;
        height: auto;
        align-items: start;
    }

    .layout-top>.panel:last-child {
        grid-column: 1 / -1;
    }

    .terminal {
        height: 600px;
        max-height: 600px;
        flex: none;
    }

    .account-list {
        height: 500px;
        max-height: 500px;
        flex: none;
        min-height: auto;
    }
}

@media (max-width: 900px) {
    .layout-top {
        grid-template-columns: 1fr;
    }

    .layout-top>.panel:last-child {
        grid-column: 1;
    }

    .terminal {
        height: 400px;
        max-height: 400px;
        flex: none;
    }

    .account-list {
        height: 400px;
        max-height: 400px;
        flex: none;
        min-height: auto;
    }
}

/* Panel */
.panel {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    display: flex;
    flex-direction: column;
}

.panel-header {
    padding: 16px 20px;
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.panel-title {
    font-size: 14px;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--text-primary);
}

.panel-title .icon {
    color: var(--text-secondary);
}

.panel-body {
    padding: 20px;
    flex: 1;
    display: flex;
    flex-direction: column;
    min-height: 0;
    /* 允许 flex 项目缩小，这是触发内部滚动的关键 */
}

/* Controls */
.control-group {
    margin-bottom: 16px;
}

.control-group label {
    display: block;
    font-size: 13px;
    color: var(--text-secondary);
    font-weight: 500;
    margin-bottom: 8px;
}

.controls-actions {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-top: 24px;
}

.toolbar-chk {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 13px;
    color: var(--text-primary);
    cursor: pointer;
}

.toolbar-chk input[type="checkbox"] {
    width: 14px;
    height: 14px;
    accent-color: var(--accent);
    cursor: pointer;
}

.btn-success {
    padding: 8px 16px;
    background-color: var(--success);
    border: 1px solid rgba(240, 246, 252, 0.1);
    border-radius: var(--radius-sm);
    color: #fff;
    font-size: 13px;
    font-weight: 500;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    flex: 1;
    justify-content: center;
}

.btn-success:hover {
    background-color: #2ea043;
}

.btn-danger {
    padding: 8px 16px;
    background-color: var(--bg-secondary);
    border: 1px solid var(--danger);
    border-radius: var(--radius-sm);
    color: var(--danger-text);
    font-size: 13px;
    font-weight: 500;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    flex: 1;
    justify-content: center;
}

.btn-danger:hover {
    background-color: var(--danger);
    color: #fff;
}

.status-indicator {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 12px;
    font-weight: 500;
    color: var(--text-secondary);
}

.status-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background-color: var(--text-secondary);
}

.status-running .status-dot {
    background-color: var(--success-text);
    box-shadow: 0 0 8px var(--success-text);
}

.status-running {
    color: var(--success-text);
}

/* Proxy Pool */
.proxy-stats {
    display: flex;
    gap: 16px;
    margin-bottom: 16px;
    padding: 12px;
    background-color: var(--bg-primary);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
}

.stat-box {
    flex: 1;
    text-align: center;
}

.stat-val {
    font-size: 20px;
    font-weight: 600;
    color: var(--text-primary);
    line-height: 1.2;
}

.stat-lbl {
    font-size: 11px;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.proxy-input-group {
    display: flex;
    gap: 8px;
    margin-bottom: 16px;
    align-items: stretch;
}

.proxy-input-group .input-field {
    flex: 1;
    min-width: 0;
}

.proxy-input-group button {
    flex-shrink: 0;
}

.btn-sm {
    padding: 6px 12px;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    background-color: var(--bg-tertiary);
    color: var(--text-primary);
    font-size: 12px;
    font-weight: 500;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    transition: all 0.2s;
    white-space: nowrap;
}

.btn-sm:hover:not(:disabled) {
    border-color: var(--text-secondary);
    background-color: var(--border);
}

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

.btn-sm.danger:hover:not(:disabled) {
    border-color: var(--danger);
    color: var(--danger-text);
}

.proxy-list {
    flex: 1;
    min-height: 150px;
    max-height: 250px;
    overflow-y: auto;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    background-color: var(--bg-primary);
}

.proxy-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 8px 12px;
    border-bottom: 1px solid var(--border);
    font-size: 12px;
}

.proxy-item:last-child {
    border-bottom: none;
}

.proxy-info {
    display: flex;
    align-items: center;
    gap: 8px;
    overflow: hidden;
}

.proxy-tag {
    color: var(--text-primary);
    font-weight: 500;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    max-width: 150px;
}

.proxy-proto {
    color: var(--text-secondary);
    font-size: 11px;
    padding: 2px 6px;
    background-color: var(--bg-tertiary);
    border-radius: 4px;
}

.proxy-status {
    display: flex;
    align-items: center;
    gap: 4px;
}

.px-alive {
    color: var(--success-text);
}

.px-dead {
    color: var(--danger-text);
}

/* Terminal */
.terminal {
    background-color: var(--bg-primary);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 12px;
    flex: 1;
    overflow-y: auto;
    min-height: 400px;
    /* 注册日志需要更大的展示空间 */
    height: 0;
    font-family: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, monospace;
    font-size: 12px;
    line-height: 1.6;
}

.terminal::-webkit-scrollbar,
.proxy-list::-webkit-scrollbar,
.account-list::-webkit-scrollbar {
    width: 8px;
}

.terminal::-webkit-scrollbar-thumb,
.proxy-list::-webkit-scrollbar-thumb,
.account-list::-webkit-scrollbar-thumb {
    background: var(--border);
    border-radius: 4px;
}

.log-line {
    word-break: break-all;
    margin-bottom: 2px;
}

.log-success {
    color: var(--success-text);
}

.log-error {
    color: var(--danger-text);
}

.log-info {
    color: var(--border-focus);
}

.log-muted {
    color: var(--text-secondary);
}

/* Accounts Panel */
.accounts-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 16px;
    flex-wrap: wrap;
    gap: 12px;
}

.toolbar-actions {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 8px;
}

.account-count {
    font-size: 12px;
    color: var(--text-secondary);
}

.account-list {
    border: 1px solid var(--border);
    border-top: none;
    border-radius: 0 0 var(--radius-sm) var(--radius-sm);
    flex: 1;
    overflow-y: auto;
    min-height: 300px;
    height: 0;
}

.account-item {
    display: flex;
    align-items: center;
    padding: 12px 16px;
    border-bottom: 1px solid var(--border);
    background-color: var(--bg-primary);
    transition: background-color 0.2s;
}

.account-item:last-child {
    border-bottom: none;
}

.account-item:hover {
    background-color: var(--bg-tertiary);
}

.account-item.selected {
    background-color: rgba(47, 129, 247, 0.1);
}

.account-item input[type="checkbox"] {
    width: 14px;
    height: 14px;
    accent-color: var(--accent);
    margin-right: 16px;
    cursor: pointer;
}

.account-icon {
    color: var(--text-secondary);
    margin-right: 12px;
}

.account-info {
    flex: 1;
    min-width: 0;
}

.account-email {
    font-size: 13px;
    font-weight: 500;
    color: var(--text-primary);
    margin-bottom: 2px;
}

.account-meta {
    font-size: 11px;
    color: var(--text-secondary);
    display: flex;
    gap: 12px;
}

.account-actions {
    display: flex;
    gap: 8px;
    margin-left: 16px;
}

.btn-icon {
    width: 28px;
    height: 28px;
    border: 1px solid transparent;
    border-radius: var(--radius-sm);
    background: transparent;
    color: var(--text-secondary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s;
}

.btn-icon:hover {
    border-color: var(--border);
    background-color: var(--bg-secondary);
    color: var(--text-primary);
}

.btn-icon.del:hover {
    border-color: var(--danger);
    color: var(--danger-text);
}

.empty-state {
    padding: 48px 20px;
    text-align: center;
    color: var(--text-secondary);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
}

/* Toast/Dialog */
.toast {
    position: fixed;
    bottom: 24px;
    right: 24px;
    z-index: 2000;
    padding: 12px 16px;
    border-radius: var(--radius-sm);
    font-size: 13px;
    font-weight: 500;
    background-color: var(--bg-tertiary);
    border: 1px solid var(--border);
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 8px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.5);
    transform: translateY(20px);
    opacity: 0;
    transition: all 0.2s ease-out;
    pointer-events: none;
}

.toast.error {
    border-color: var(--danger);
}

.toast.success {
    border-color: var(--success);
}

.toast.show {
    transform: translateY(0);
    opacity: 1;
}

.dialog-overlay {
    position: fixed;
    inset: 0;
    z-index: 3000;
    display: none;
    align-items: center;
    justify-content: center;
    background-color: rgba(15, 17, 23, 0.8);
    backdrop-filter: blur(2px);
}

.dialog-overlay.show {
    display: flex;
}

.dialog-card {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 24px;
    width: 360px;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.5);
}

.dialog-title {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 8px;
    color: var(--text-primary);
}

.dialog-msg {
    font-size: 13px;
    color: var(--text-secondary);
    margin-bottom: 24px;
    line-height: 1.5;
}

.dialog-footer {
    display: flex;
    justify-content: flex-end;
    gap: 12px;
    align-items: center;
}

.dialog-footer .btn-primary,
.dialog-footer .btn-outline {
    margin-top: 0;
    width: auto;
    padding: 8px 16px;
    font-size: 13px;
}

/* ===== Email Providers ===== */
.email-providers-list {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.ep-item {
    background-color: var(--bg-primary);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 12px 14px;
    transition: border-color 0.2s;
}

.ep-item.ep-enabled {
    border-color: var(--success);
}

.ep-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 8px;
}

.ep-name {
    font-size: 13px;
    font-weight: 600;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 8px;
}

.ep-name .ep-badge {
    font-size: 10px;
    font-weight: 500;
    padding: 2px 6px;
    border-radius: 4px;
    text-transform: uppercase;
}

.ep-badge.on {
    background-color: rgba(63, 185, 80, 0.15);
    color: var(--success-text);
}

.ep-badge.off {
    background-color: rgba(139, 148, 158, 0.15);
    color: var(--text-secondary);
}

.ep-actions {
    display: flex;
    align-items: center;
    gap: 6px;
}

.ep-toggle {
    position: relative;
    width: 36px;
    height: 20px;
    appearance: none;
    -webkit-appearance: none;
    background-color: var(--border);
    border-radius: 10px;
    cursor: pointer;
    transition: background-color 0.2s;
    border: none;
    outline: none;
}

.ep-toggle:checked {
    background-color: var(--success);
}

.ep-toggle::before {
    content: '';
    position: absolute;
    top: 2px;
    left: 2px;
    width: 16px;
    height: 16px;
    background-color: #fff;
    border-radius: 50%;
    transition: transform 0.2s;
}

.ep-toggle:checked::before {
    transform: translateX(16px);
}

.ep-test-btn {
    padding: 3px 8px;
    font-size: 11px;
    border: 1px solid var(--border);
    border-radius: 4px;
    background: var(--bg-tertiary);
    color: var(--text-secondary);
    cursor: pointer;
    transition: all 0.2s;
}

.ep-test-btn:hover {
    border-color: var(--text-secondary);
    color: var(--text-primary);
}

.ep-test-result {
    font-size: 11px;
    margin-top: 6px;
    padding: 4px 8px;
    border-radius: 4px;
    display: none;
}

.ep-test-result.ok {
    display: block;
    background-color: rgba(63, 185, 80, 0.1);
    color: var(--success-text);
}

.ep-test-result.fail {
    display: block;
    background-color: rgba(248, 81, 73, 0.1);
    color: var(--danger-text);
}

.ep-config-toggle {
    font-size: 11px;
    color: var(--accent);
    cursor: pointer;
    border: none;
    background: none;
    padding: 2px 0;
    margin-top: 6px;
}

.ep-config-toggle:hover {
    text-decoration: underline;
}

.ep-config {
    display: none;
    margin-top: 10px;
    padding-top: 10px;
    border-top: 1px solid var(--border);
}

.ep-config.show {
    display: block;
}

.ep-config .control-group {
    margin-bottom: 10px;
}

.ep-config .control-group:last-child {
    margin-bottom: 0;
}

.ep-config label {
    display: block;
    font-size: 11px;
    color: var(--text-secondary);
    margin-bottom: 4px;
}

.ep-config .input-field {
    font-size: 12px;
    padding: 6px 10px;
}

.ep-config textarea.input-field {
    min-height: 60px;
    resize: vertical;
    font-family: ui-monospace, SFMono-Regular, monospace;
}