:root {
    --font-body: "IBM Plex Sans", "Segoe UI", sans-serif;
    --font-display: "Space Grotesk", "IBM Plex Sans", sans-serif;

    --bg: #f4f5f7;
    --bg-soft: #ffffff;
    --bg-card: rgba(255, 255, 255, 0.78);
    --bg-glass: rgba(255, 255, 255, 0.6);
    --bg-overlay: rgba(15, 23, 42, 0.45);

    --text: #0f172a;
    --text-muted: #586174;
    --text-soft: #94a3b8;

    --primary: #2563eb;
    --primary-600: #1d4ed8;
    --accent: #0f766e;
    --accent-500: #0d9488;
    --success: #16a34a;
    --warning: #f97316;
    --danger: #ef4444;

    --border: rgba(15, 23, 42, 0.08);
    --border-strong: rgba(15, 23, 42, 0.18);
    --shadow: 0 24px 60px rgba(15, 23, 42, 0.12);
    --shadow-soft: 0 12px 30px rgba(15, 23, 42, 0.08);

    --radius-sm: 10px;
    --radius: 18px;
    --radius-lg: 24px;
    --transition: 0.2s ease;
    --node-card-height: 112px;
    --node-card-gap: 12px;
}

body[data-theme="dark"] {
    --bg: #0b1120;
    --bg-soft: #101827;
    --bg-card: rgba(15, 23, 42, 0.88);
    --bg-glass: rgba(15, 23, 42, 0.7);
    --bg-overlay: rgba(2, 6, 23, 0.75);

    --text: #e2e8f0;
    --text-muted: #94a3b8;
    --text-soft: #64748b;

    --primary: #38bdf8;
    --primary-600: #0ea5e9;
    --accent: #2dd4bf;
    --accent-500: #14b8a6;
    --success: #22c55e;
    --warning: #f97316;
    --danger: #f43f5e;

    --border: rgba(148, 163, 184, 0.16);
    --border-strong: rgba(148, 163, 184, 0.32);
    --shadow: 0 28px 70px rgba(2, 6, 23, 0.65);
    --shadow-soft: 0 16px 35px rgba(2, 6, 23, 0.45);
}

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

html,
body {
    width: 100%;
    min-height: 100%;
}

body {
    font-family: var(--font-body);
    color: var(--text);
    background: var(--bg);
    overflow-x: hidden;
}

.is-hidden {
    display: none;
}

img {
    max-width: 100%;
}

a {
    color: inherit;
    text-decoration: none;
}

button,
input,
select,
textarea {
    font-family: inherit;
    color: inherit;
}

.ambient-bg {
    position: fixed;
    inset: 0;
    pointer-events: none;
    overflow: hidden;
    z-index: 0;
}

.orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(0px);
    opacity: 0.55;
}

.orb-1 {
    width: 520px;
    height: 520px;
    background: radial-gradient(circle at top, rgba(56, 189, 248, 0.35), rgba(37, 99, 235, 0));
    top: -120px;
    left: -160px;
}

.orb-2 {
    width: 420px;
    height: 420px;
    background: radial-gradient(circle at top, rgba(45, 212, 191, 0.35), rgba(13, 148, 136, 0));
    bottom: -140px;
    right: -160px;
}

.orb-3 {
    width: 320px;
    height: 320px;
    background: radial-gradient(circle at top, rgba(249, 115, 22, 0.3), rgba(249, 115, 22, 0));
    top: 40%;
    right: 15%;
}

.grid-noise {
    position: absolute;
    inset: 0;
    background-image: linear-gradient(transparent 95%, rgba(255, 255, 255, 0.04) 96%),
        linear-gradient(90deg, transparent 95%, rgba(255, 255, 255, 0.04) 96%);
    background-size: 40px 40px;
    opacity: 0.08;
}

.auth-screen {
    position: fixed;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-direction: column;
    background: linear-gradient(140deg, rgba(15, 23, 42, 0.8), rgba(15, 23, 42, 0.4));
    backdrop-filter: blur(12px);
    z-index: 5;
    opacity: 0;
    pointer-events: none;
    transition: opacity var(--transition);
}

.auth-screen.show {
    opacity: 1;
    pointer-events: auto;
}

.auth-card {
    width: min(420px, 92vw);
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 32px;
    text-align: center;
    box-shadow: var(--shadow);
}

.auth-badge {
    width: 56px;
    height: 56px;
    border-radius: 16px;
    display: grid;
    place-items: center;
    margin: 0 auto 18px;
    background: rgba(37, 99, 235, 0.15);
    color: var(--primary);
    font-size: 24px;
}

.auth-title {
    font-family: var(--font-display);
    font-size: 28px;
    margin-bottom: 6px;
}

.auth-subtitle {
    color: var(--text-muted);
    margin-bottom: 20px;
}

.auth-form input {
    width: 100%;
    padding: 12px 14px;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border);
    background: var(--bg-soft);
    margin-bottom: 12px;
}

.auth-form button {
    width: 100%;
}

#loginError {
    font-size: 0.85rem;
    color: var(--danger);
    margin-top: 8px;
    display: none;
}

#loginError.show {
    display: block;
}

.auth-footer {
    margin-top: 18px;
    font-size: 0.8rem;
    color: var(--text-muted);
}

.app-shell {
    position: relative;
    z-index: 1;
    padding: 32px 5vw 80px;
    display: none;
}

.app-shell.show {
    display: block;
}

.topbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
    margin-bottom: 28px;
}

.brand {
    display: flex;
    align-items: center;
    gap: 14px;
}

.brand-icon {
    width: 48px;
    height: 48px;
    border-radius: 16px;
    background: rgba(37, 99, 235, 0.12);
    display: grid;
    place-items: center;
    color: var(--primary);
    font-size: 22px;
}

.brand h1 {
    font-family: var(--font-display);
    font-size: 22px;
}

.brand p {
    font-size: 0.85rem;
    color: var(--text-muted);
}

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

.next-check {
    background: var(--bg-glass);
    border: 1px solid var(--border);
    padding: 6px 12px;
    border-radius: 999px;
    font-size: 0.85rem;
    display: flex;
    align-items: center;
    gap: 6px;
}

.btn {
    border: 1px solid transparent;
    padding: 10px 16px;
    border-radius: 12px;
    cursor: pointer;
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    transition: transform var(--transition), box-shadow var(--transition), background var(--transition);
    background: var(--bg-soft);
}

.btn i {
    font-size: 16px;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary), var(--primary-600));
    color: white;
    box-shadow: 0 12px 25px rgba(37, 99, 235, 0.28);
}

.btn-secondary {
    background: var(--bg-glass);
    border-color: var(--border);
}

.btn-ghost {
    background: transparent;
    border-color: var(--border);
}

.btn-danger {
    background: linear-gradient(135deg, #ef4444, #dc2626);
    color: white;
    box-shadow: 0 12px 25px rgba(239, 68, 68, 0.28);
}

.btn:hover {
    transform: translateY(-1px);
    box-shadow: var(--shadow-soft);
}

button:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
}

.spinner {
    width: 16px;
    height: 16px;
    border-radius: 50%;
    border: 2px solid rgba(255, 255, 255, 0.4);
    border-top-color: white;
    display: inline-block;
    animation: spin 0.8s linear infinite;
}

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

.theme-toggle {
    width: 42px;
    height: 42px;
    border-radius: 12px;
    border: 1px solid var(--border);
    background: var(--bg-soft);
    display: grid;
    place-items: center;
    cursor: pointer;
}

.hero {
    display: grid;
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
    gap: 24px;
    margin-bottom: 26px;
}

.hero-main {
    padding: 28px;
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border);
    box-shadow: var(--shadow-soft);
}

.hero-label {
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.12em;
    color: var(--accent);
    font-weight: 600;
    margin-bottom: 10px;
}

.hero-main h2 {
    font-family: var(--font-display);
    font-size: 30px;
    margin-bottom: 12px;
}

.hero-main p {
    color: var(--text-muted);
    line-height: 1.6;
}

.hero-actions {
    margin-top: 18px;
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
}

.hero-panel {
    display: grid;
    gap: 18px;
}

.progress-row {
    margin: 16px 0 18px;
}

.sources-container,
.local-nodes-container {
    margin-top: 18px;
}

.progress-box {
    background: var(--bg-card);
    border-radius: var(--radius);
    border: 1px solid var(--border);
    padding: 18px;
    box-shadow: var(--shadow-soft);
}

.progress-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 10px;
}

.progress-status {
    font-weight: 600;
}

.progress-percent {
    color: var(--accent);
    font-weight: 600;
}

.progress-track {
    width: 100%;
    height: 8px;
    border-radius: 999px;
    background: rgba(148, 163, 184, 0.2);
    overflow: hidden;
}

.progress-fill {
    width: 0%;
    height: 100%;
    background: linear-gradient(90deg, var(--primary), var(--accent));
    transition: width 0.3s ease;
}

.progress-detail {
    margin-top: 8px;
    display: flex;
    justify-content: space-between;
    font-size: 0.85rem;
    color: var(--text-muted);
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 12px;
}

.stat-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 14px;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.stat-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    color: var(--text-muted);
    font-size: 0.85rem;
}

.stat-icon {
    font-size: 18px;
}

.stat-value {
    font-size: 1.4rem;
    font-weight: 700;
}

.stat-value.primary {
    color: var(--primary);
}

.stat-value.success {
    color: var(--success);
}

.stat-value.accent {
    color: var(--accent);
}

.panel {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 20px;
    box-shadow: var(--shadow-soft);
}

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

.panel-header h3 {
    font-family: var(--font-display);
    font-size: 1.05rem;
    display: flex;
    align-items: center;
    gap: 8px;
}

.panel-tag {
    font-size: 0.75rem;
    padding: 4px 10px;
    border-radius: 999px;
    background: rgba(37, 99, 235, 0.1);
    color: var(--primary);
}

.sources-grid,
.local-nodes-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
    gap: 12px;
}

.source-card {
    background: var(--bg-glass);
    border: 1px solid var(--border);
    border-radius: 14px;
    padding: 12px 14px;
    display: flex;
    flex-direction: column;
    gap: 10px;
    transition: transform var(--transition), box-shadow var(--transition);
}

.source-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-soft);
}

.source-card-clickable {
    cursor: pointer;
}

.source-card-failed-soft {
    opacity: 0.8;
    border-color: var(--danger);
    background: rgba(255, 0, 0, 0.05);
}

.source-header {
    display: flex;
    justify-content: space-between;
    gap: 10px;
    align-items: center;
    font-size: 0.85rem;
    color: var(--text-muted);
}

.source-name {
    font-weight: 600;
    color: var(--text);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.source-stats {
    display: flex;
    justify-content: space-between;
    font-size: 0.85rem;
    color: var(--text-muted);
}

.source-stat {
    font-weight: 600;
}

.source-rate {
    color: var(--accent);
    font-weight: 600;
}

.stat-valid-count {
    color: var(--success);
}

.stat-total-count {
    font-size: 0.6em;
    opacity: 0.6;
    margin-left: 4px;
}

.status-icon {
    margin-right: 4px;
}

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

.status-danger {
    color: var(--danger);
}

.status-warning {
    color: var(--warning);
}

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

.source-failed {
    border-color: rgba(244, 63, 94, 0.5);
}

.source-empty {
    border-color: rgba(249, 115, 22, 0.5);
}

.controls {
    margin-top: 24px;
    display: grid;
    grid-template-columns: 1fr;
    gap: 12px;
    align-items: stretch;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 14px;
    box-shadow: var(--shadow-soft);
    backdrop-filter: blur(10px);
}

.controls-row {
    display: flex;
    gap: 12px;
    align-items: center;
    flex-wrap: wrap;
    width: 100%;
}

.controls-row-top {
    flex-wrap: nowrap;
}

.controls-row+.controls-row {
    border-top: 1px dashed var(--border);
    padding-top: 12px;
}

.controls-row-top .search-box {
    flex: 1 1 auto;
    min-width: 0;
}

.controls-row-top .sort-dropdown {
    flex: 0 0 220px;
    margin-left: auto;
}

.controls-row-middle .filter-scroll {
    width: 100%;
}

.search-box {
    position: relative;
}

.search-box input {
    width: 100%;
    padding: 12px 14px 12px 38px;
    border-radius: 12px;
    border: 1px solid var(--border);
    background: var(--bg-soft);
    box-shadow: inset 0 1px 2px rgba(15, 23, 42, 0.08);
}

.search-box i {
    position: absolute;
    left: 12px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-muted);
}

.filter-scroll {
    overflow-x: auto;
    width: 100%;
}

.filter-tags {
    display: flex;
    gap: 8px;
    flex-wrap: nowrap;
    padding-bottom: 4px;
    width: 100%;
}

.filter-tag {
    background: var(--bg-glass);
    border: 1px solid var(--border);
    border-radius: 999px;
    padding: 6px 12px;
    font-size: 0.8rem;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    cursor: pointer;
    transition: var(--transition);
    backdrop-filter: blur(8px);
}

.filter-tag.active {
    background: rgba(37, 99, 235, 0.12);
    border-color: rgba(37, 99, 235, 0.4);
    color: var(--primary);
    box-shadow: 0 10px 20px rgba(37, 99, 235, 0.12);
}

.tag-count {
    font-size: 0.72rem;
    padding: 2px 6px;
    background: rgba(148, 163, 184, 0.2);
    border-radius: 999px;
}

.ip-type-filters {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

.ip-type-btn {
    padding: 8px 12px;
    border-radius: 10px;
    border: 1px solid var(--border);
    background: var(--bg-glass);
    cursor: pointer;
    font-size: 0.85rem;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-weight: 600;
}

.ip-type-btn.active {
    background: rgba(45, 212, 191, 0.12);
    border-color: rgba(45, 212, 191, 0.4);
    color: var(--accent);
}

.ip-count {
    font-size: 0.72rem;
    padding: 2px 6px;
    border-radius: 999px;
    background: rgba(148, 163, 184, 0.2);
    color: var(--text-muted);
}

.ip-type-btn.active .ip-count {
    background: rgba(45, 212, 191, 0.2);
    color: var(--accent);
}

.sort-dropdown select {
    padding: 10px 16px;
    padding-right: 40px;
    border-radius: 12px;
    border: 1px solid var(--border);
    background: var(--bg-soft);
    width: 100%;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath fill='%2364758b' d='M1.41 0.59 6 5.17 10.59 0.59 12 2 6 8 0 2z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 12px center;
    background-size: 12px;
}

.node-list {
    margin-top: 24px;
    position: relative;
}

.virtual-spacer {
    width: 100%;
    height: 0;
}

.virtual-items {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    display: grid;
    gap: var(--node-card-gap);
    will-change: transform;
}

.node-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 16px;
    display: grid;
    grid-template-columns: 40px 50px minmax(0, 1fr) auto auto;
    gap: 12px;
    align-items: center;
    transition: transform var(--transition), box-shadow var(--transition);
    position: relative;
    overflow: hidden;
    cursor: pointer;
    height: var(--node-card-height);
}

.node-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-soft);
}

.node-card.premium::after {
    content: "";
    position: absolute;
    inset: 0;
    border: 1px solid rgba(234, 179, 8, 0.6);
    border-radius: var(--radius);
    pointer-events: none;
}

.node-rank {
    width: 32px;
    height: 32px;
    border-radius: 10px;
    background: rgba(37, 99, 235, 0.12);
    display: grid;
    place-items: center;
    font-weight: 700;
    color: var(--primary);
}

.node-rank.top3 {
    background: rgba(234, 179, 8, 0.2);
    color: #b45309;
}

.node-flag {
    font-size: 24px;
}

.node-info {
    display: flex;
    flex-direction: column;
    gap: 4px;
    min-width: 0;
}

.node-name {
    font-weight: 600;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.node-meta-row {
    display: flex;
    gap: 10px;
    font-size: 0.82rem;
    color: var(--text-muted);
}

.node-proto {
    padding: 2px 8px;
    border-radius: 999px;
    background: rgba(37, 99, 235, 0.1);
    color: var(--primary);
    font-size: 0.72rem;
    font-weight: 600;
}

.node-server {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.node-icons {
    display: flex;
    align-items: center;
    gap: 8px;
}

.unlock-icons {
    display: flex;
    gap: 4px;
    align-items: center;
    font-size: 16px;
}

.unlock-icons i {
    font-size: 15px;
}

.unlock-chip {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 20px;
    height: 20px;
    padding: 0 5px;
    border-radius: 999px;
    font-size: 10px;
    font-weight: 700;
    letter-spacing: 0.2px;
    color: var(--chip-color, var(--text));
    border: 1px solid color-mix(in srgb, var(--chip-color, #64748b) 40%, transparent);
    background: color-mix(in srgb, var(--chip-color, #64748b) 14%, transparent);
}

.unlock-chip.small {
    min-width: 18px;
    height: 18px;
    font-size: 9px;
    padding: 0 4px;
}

.unlock-chip.locked {
    opacity: 0.38;
}

.unlock-count {
    background: rgba(37, 99, 235, 0.12);
    color: var(--primary);
    border-radius: 999px;
    padding: 2px 8px;
    font-size: 0.7rem;
    font-weight: 600;
}

.unlock-count.zero {
    background: rgba(148, 163, 184, 0.2);
    color: var(--text-muted);
}

.ip-type-icon {
    font-size: 16px;
    padding: 4px 6px;
    border-radius: 10px;
    background: rgba(148, 163, 184, 0.2);
}

.ip-type-icon.ip-res {
    background: rgba(34, 197, 94, 0.18);
}

.ip-type-icon.ip-mobile {
    background: rgba(59, 130, 246, 0.18);
}

.ip-type-icon.ip-dc {
    background: rgba(249, 115, 22, 0.18);
}

.ip-type-icon.ip-biz {
    background: rgba(14, 116, 144, 0.18);
}

.ip-type-icon.ip-edu {
    background: rgba(168, 85, 247, 0.18);
}

.ip-type-icon.ip-unk {
    background: rgba(100, 116, 139, 0.2);
}

.node-stats {
    display: flex;
    align-items: center;
    gap: 10px;
}

.health-display,
.latency-display {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 2px;
    min-width: 52px;
}

.health-value,
.latency-value {
    font-weight: 700;
    font-size: 0.95rem;
}

.health-label,
.latency-label {
    font-size: 0.7rem;
    color: var(--text-muted);
}

.health-value.health-high {
    color: var(--success);
}

.health-value.health-mid {
    color: var(--warning);
}

.health-value.health-low {
    color: var(--danger);
}

.latency-value.fast {
    color: var(--success);
}

.latency-value.medium {
    color: var(--warning);
}

.latency-value.slow {
    color: var(--danger);
}

.status-indicator {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--success);
}

.mainland-display {
    font-size: 0.72rem;
    padding: 4px 8px;
    border-radius: 999px;
    background: rgba(148, 163, 184, 0.2);
    color: var(--text-muted);
    display: inline-flex;
    align-items: center;
    gap: 4px;
}

.mainland-display.success {
    color: var(--success);
    background: rgba(34, 197, 94, 0.15);
}

.mainland-display.error {
    color: var(--danger);
    background: rgba(244, 63, 94, 0.15);
}

.empty-state {
    text-align: center;
    padding: 40px 20px;
    color: var(--text-muted);
}

.empty-state i {
    font-size: 36px;
    margin-bottom: 10px;
}

.empty-state-setup-icon {
    font-size: 48px;
    margin-bottom: 20px;
    color: var(--primary);
}

.empty-state-action-btn {
    margin-top: 20px;
}

.panel-empty-state {
    grid-column: 1 / -1;
    color: var(--text-muted);
    text-align: center;
    padding: 40px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
}

.panel-empty-icon {
    font-size: 2rem;
    opacity: 0.5;
}

.skeleton-card {
    background: var(--bg-card);
    border-radius: var(--radius);
    border: 1px solid var(--border);
    padding: 16px;
    display: flex;
    gap: 12px;
    align-items: center;
    margin-bottom: var(--node-card-gap);
}

.skeleton-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.skeleton {
    background: linear-gradient(90deg, rgba(148, 163, 184, 0.15), rgba(148, 163, 184, 0.3), rgba(148, 163, 184, 0.15));
    background-size: 200% 100%;
    animation: shimmer 1.4s ease infinite;
    border-radius: 8px;
}

.skeleton-circle {
    width: 42px;
    height: 42px;
    border-radius: 50%;
}

.skeleton-line {
    height: 12px;
}

.skeleton-line.medium {
    width: 160px;
}

.skeleton-line.short {
    width: 80px;
}

@keyframes shimmer {
    0% {
        background-position: 0% 50%;
    }

    100% {
        background-position: 100% 50%;
    }
}

.modal-overlay {
    position: fixed;
    inset: 0;
    background: var(--bg-overlay);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    pointer-events: none;
    transition: opacity var(--transition);
    z-index: 10;
}

.modal-overlay.show {
    opacity: 1;
    pointer-events: auto;
}

.modal {
    background: var(--bg-soft);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border);
    width: min(560px, 94vw);
    max-height: 88vh;
    display: flex;
    flex-direction: column;
    box-shadow: var(--shadow);
    overflow: hidden;
}

.modal-wide {
    width: min(980px, 96vw);
}

.node-detail-modal {
    width: min(680px, 94vw);
}

.modal-header {
    padding: 18px 22px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid var(--border);
    background: var(--bg-glass);
}

.modal-header h3 {
    font-family: var(--font-display);
    font-size: 1.1rem;
}

.close-btn {
    border: none;
    background: transparent;
    font-size: 20px;
    cursor: pointer;
}

.modal-body {
    padding: 20px 22px;
    overflow-y: auto;
}

.modal-footer {
    padding: 14px 22px;
    display: flex;
    justify-content: flex-end;
    gap: 10px;
    border-top: 1px solid var(--border);
    background: var(--bg-glass);
}

.settings-grid {
    display: grid;
    gap: 18px;
}

.settings-section {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 18px;
    display: grid;
    gap: 14px;
}

.settings-section h4 {
    font-family: var(--font-display);
    font-size: 1rem;
}

.section-desc {
    font-size: 0.85rem;
    color: var(--text-muted);
}

.form-group {
    display: grid;
    gap: 8px;
}

.form-group label {
    font-size: 0.85rem;
    color: var(--text-muted);
    font-weight: 600;
}

.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 10px 12px;
    border-radius: 12px;
    border: 1px solid var(--border);
    background: var(--bg-soft);
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus,
.search-box input:focus {
    outline: none;
    border-color: rgba(37, 99, 235, 0.6);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.12);
}

.form-group input:disabled {
    background: rgba(148, 163, 184, 0.15);
    color: var(--text-muted);
}

.form-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 12px;
}

.help-text {
    font-size: 0.75rem;
    color: var(--text-soft);
}

.input-inline {
    display: flex;
    gap: 10px;
    align-items: center;
    flex-wrap: wrap;
}

.inline-check {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 0.8rem;
    color: var(--text-muted);
    padding: 6px 10px;
    border-radius: 999px;
    border: 1px solid var(--border);
    background: var(--bg-glass);
    white-space: nowrap;
}

.inline-check input {
    accent-color: var(--primary);
}

.input-inline>input[type="number"] {
    flex: 1 1 180px;
    min-width: 160px;
}

.toggle-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 12px;
}

.toggle-card {
    background: var(--bg-glass);
    border: 1px solid var(--border);
    border-radius: 14px;
    padding: 12px;
    display: grid;
    grid-template-columns: 40px 1fr;
    gap: 10px;
    align-items: center;
}

.toggle-card input {
    display: none;
}

.toggle-ui {
    width: 36px;
    height: 20px;
    border-radius: 999px;
    background: rgba(148, 163, 184, 0.4);
    position: relative;
    transition: var(--transition);
}

.toggle-ui::after {
    content: "";
    width: 16px;
    height: 16px;
    background: white;
    border-radius: 50%;
    position: absolute;
    top: 2px;
    left: 2px;
    transition: var(--transition);
}

.toggle-card input:checked+.toggle-ui {
    background: linear-gradient(135deg, var(--primary), var(--accent));
}

.toggle-card input:checked+.toggle-ui::after {
    transform: translateX(16px);
}

.toggle-card strong {
    display: block;
    font-size: 0.9rem;
}

.toggle-card span {
    font-size: 0.75rem;
    color: var(--text-muted);
}

.export-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
    gap: 10px;
    margin-bottom: 14px;
}

.export-btn {
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 10px;
    background: var(--bg-soft);
    display: inline-flex;
    align-items: center;
    gap: 8px;
    justify-content: center;
    cursor: pointer;
}

.section-title {
    font-size: 0.85rem;
    color: var(--text-muted);
    margin: 12px 0 6px;
}

.toast-container {
    position: fixed;
    right: 24px;
    bottom: 24px;
    display: grid;
    gap: 10px;
    z-index: 20;
}

.toast {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 14px;
    padding: 12px 14px;
    min-width: 260px;
    display: grid;
    grid-template-columns: 24px 1fr auto;
    gap: 10px;
    align-items: start;
    box-shadow: var(--shadow-soft);
    transform: translateY(10px);
    opacity: 0;
    transition: var(--transition);
}

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

.toast.hide {
    opacity: 0;
}

.toast-icon {
    font-size: 18px;
}

.toast-title {
    font-weight: 600;
    margin-bottom: 4px;
}

.toast-msg {
    font-size: 0.8rem;
    color: var(--text-muted);
}

.toast-close {
    border: none;
    background: transparent;
    cursor: pointer;
}

.toast.success {
    border-color: rgba(34, 197, 94, 0.4);
}

.toast.error {
    border-color: rgba(244, 63, 94, 0.4);
}

.toast.warning {
    border-color: rgba(249, 115, 22, 0.4);
}

.toast.info {
    border-color: rgba(59, 130, 246, 0.4);
}

.node-detail-grid {
    display: grid;
    grid-template-columns: auto 1fr;
    gap: 10px 16px;
    align-items: center;
}

.node-detail-label {
    font-size: 0.8rem;
    color: var(--text-muted);
}

.node-detail-value {
    font-weight: 600;
}

.unlock-badges {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 10px;
}

.unlock-badge {
    padding: 4px 10px;
    border-radius: 999px;
    font-size: 0.75rem;
    border: 1px solid var(--border);
}

.unlock-badge.unlocked {
    color: var(--success);
    border-color: rgba(34, 197, 94, 0.4);
    background: rgba(34, 197, 94, 0.12);
}

.unlock-badge.locked {
    color: var(--text-muted);
    background: rgba(148, 163, 184, 0.16);
}

.speed-badges {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 10px;
}

.speed-badge {
    padding: 4px 10px;
    border-radius: 999px;
    font-size: 0.75rem;
    border: 1px solid var(--border);
}

.speed-badge.ok {
    color: var(--success);
    border-color: rgba(34, 197, 94, 0.4);
    background: rgba(34, 197, 94, 0.12);
}

.speed-badge.fail {
    color: var(--danger);
    border-color: rgba(244, 63, 94, 0.4);
    background: rgba(244, 63, 94, 0.12);
}

.node-detail-section h4 {
    margin-top: 16px;
    font-family: var(--font-display);
}

.node-detail-section {
    margin-top: 12px;
}

.local-node-card {
    border-left: 3px solid rgba(37, 99, 235, 0.4);
}

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

.local-node-proto {
    font-size: 0.7rem;
    padding: 2px 6px;
}

.local-node-card.available {
    border-left-color: rgba(34, 197, 94, 0.7);
}

.local-node-card.failed {
    border-left-color: rgba(244, 63, 94, 0.7);
}

.local-node-flag {
    font-size: 18px;
}

.local-node-stats {
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-size: 0.8rem;
    color: var(--text-muted);
}

.local-node-latency.fast {
    color: var(--success);
}

.local-node-latency.medium {
    color: var(--warning);
}

.local-node-latency.slow {
    color: var(--danger);
}

.local-node-health.health-high {
    color: var(--success);
}

.local-node-health.health-mid {
    color: var(--warning);
}

.local-node-health.health-low {
    color: var(--danger);
}

.local-node-unlocks {
    display: flex;
    gap: 8px;
    padding-top: 4px;
    border-top: 1px solid var(--border);
    margin-top: 4px;
    align-items: center;
    flex-wrap: wrap;
}

.local-node-unlocks i {
    font-size: 15px;
}

.local-node-unlocks .unlock-chip {
    font-size: 9px;
}

.local-nodes-summary {
    font-size: 0.85rem;
    color: var(--text-muted);
}

.summary-valid {
    color: var(--success);
}

@media (max-width: 1100px) {
    .hero {
        grid-template-columns: 1fr;
    }

    .controls-row-top .sort-dropdown {
        flex: 1 1 180px;
        margin-left: 0;
    }
}

@media (max-width: 900px) {
    .controls-row-top {
        flex-wrap: wrap;
    }
}

@media (max-width: 720px) {
    :root {
        --node-card-height: 190px;
    }

    .app-shell {
        padding: 22px 4vw 60px;
    }

    .hero-main {
        padding: 20px;
    }

    .hero-panel {
        gap: 12px;
    }

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

    .topbar {
        flex-direction: column;
        align-items: flex-start;
    }

    .actions {
        width: 100%;
        justify-content: flex-start;
        flex-wrap: nowrap;
        overflow-x: auto;
        padding-bottom: 6px;
        gap: 8px;
    }

    .actions .btn,
    .actions .theme-toggle,
    .actions .next-check {
        flex: 0 0 auto;
    }

    .btn {
        padding: 8px 12px;
        font-size: 0.85rem;
    }

    .node-card {
        grid-template-columns: 32px 36px 1fr;
        grid-template-rows: auto auto;
        align-items: start;
        gap: 8px;
    }

    .node-icons,
    .node-stats {
        grid-column: 1 / -1;
        justify-content: flex-start;
        flex-wrap: wrap;
        row-gap: 6px;
    }

    .toast-container {
        left: 16px;
        right: 16px;
        bottom: 16px;
    }

    .controls {
        gap: 10px;
        padding: 12px;
    }

    .controls-row+.controls-row {
        padding-top: 10px;
    }

    .filter-tags {
        flex-wrap: nowrap;
    }

    .filter-scroll {
        width: 100%;
        -webkit-overflow-scrolling: touch;
    }

    .controls-row-bottom {
        overflow-x: auto;
        width: 100%;
        -webkit-overflow-scrolling: touch;
    }

    .ip-type-filters {
        flex-wrap: nowrap;
        padding-bottom: 6px;
        min-width: max-content;
    }

    .ip-type-btn {
        padding: 6px 10px;
        font-size: 0.78rem;
    }

    .filter-tag {
        padding: 5px 10px;
        font-size: 0.75rem;
    }

    .unlock-icons {
        font-size: 14px;
    }

    .node-name {
        font-size: 0.95rem;
    }

    .progress-row {
        margin: 12px 0 16px;
    }

    .sources-container,
    .local-nodes-container {
        margin-top: 14px;
    }
}

@media (min-width: 1400px) {
    :root {
        --node-card-height: 120px;
    }
}