:root {
    --bg-main: #0a0e17;
    --bg-panel: #111827;
    --bg-input: #1f2937;

    --border: #374151;
    --border-light: #4b5563;

    --text-main: #e5e7eb;
    --text-muted: #9ca3af;

    --cyan: #06b6d4;
    --cyan-hover: #0891b2;
    --green: #10b981;
    --yellow: #f59e0b;
    --red: #ef4444;
    --blue: #3b82f6;
    --purple: #8b5cf6;

    --font-sans: 'Inter', system-ui, sans-serif;
    --font-mono: 'Fira Code', monospace;
}

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

body {
    font-family: var(--font-sans);
    background-color: var(--bg-main);
    color: var(--text-main);
    line-height: 1.5;
    min-height: 100vh;
}

/* Typography Utilities */
.font-mono {
    font-family: var(--font-mono);
}

.text-cyan {
    color: var(--cyan);
}

.text-green {
    color: var(--green);
}

.text-yellow {
    color: var(--yellow);
}

.text-red {
    color: var(--red);
}

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

.text-sm {
    font-size: 0.875rem;
}

.text-xs {
    font-size: 0.75rem;
}

/* Flex & Layout */
.flex {
    display: flex;
}

.flex-1 {
    flex: 1;
}

.gap-2 {
    gap: 0.5rem;
}

.gap-4 {
    gap: 1rem;
}

.mt-2 {
    margin-top: 0.5rem;
}

.mt-4 {
    margin-top: 1rem;
}

.hidden {
    display: none !important;
}

.app-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Top Nav */
.top-nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 24px 0;
    border-bottom: 1px solid var(--border);
    margin-bottom: 32px;
}

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

.brand h1 {
    font-size: 1.5rem;
    font-weight: 700;
    letter-spacing: -0.5px;
}

.nav-actions {
    display: flex;
    gap: 12px;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 8px 16px;
    border-radius: 6px;
    font-size: 0.9rem;
    font-weight: 500;
    cursor: pointer;
    border: 1px solid transparent;
    transition: all 0.2s;
    font-family: inherit;
}

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

.btn svg {
    width: 16px;
    height: 16px;
}

.btn-primary {
    background: var(--cyan);
    color: #fff;
}

.btn-primary:hover:not(:disabled) {
    background: var(--cyan-hover);
}

.btn-outline {
    background: transparent;
    border-color: var(--border);
    color: var(--text-main);
}

.btn-outline:hover:not(:disabled) {
    background: var(--bg-input);
    border-color: var(--border-light);
}

.btn-lg {
    padding: 12px 24px;
    font-size: 1rem;
}

/* Panels */
.panel {
    background: var(--bg-panel);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 24px;
    margin-bottom: 24px;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
}

.panel-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
    border-bottom: 1px solid var(--border);
    padding-bottom: 12px;
}

.panel-header h2 {
    font-size: 1.1rem;
    font-weight: 600;
}

/* Forms */
.query-form {
    display: flex;
    gap: 16px;
    align-items: flex-end;
}

.input-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.domain-group {
    flex: 2;
}

.type-group {
    flex: 1;
}

.input-group label {
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--text-muted);
}

.terminal-input,
.terminal-select {
    width: 100%;
    background: var(--bg-input);
    border: 1px solid var(--border);
    color: var(--cyan);
    padding: 12px 16px;
    border-radius: 6px;
    font-family: var(--font-mono);
    font-size: 1rem;
    outline: none;
    transition: border-color 0.2s;
}

.terminal-input:focus,
.terminal-select:focus {
    border-color: var(--cyan);
}

.terminal-input::placeholder {
    color: var(--border-light);
}

/* Grid Layout */
.results-grid {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 24px;
    align-items: start;
}

/* Records List */
.records-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.record-item {
    display: flex;
    align-items: center;
    gap: 16px;
    background: var(--bg-main);
    border: 1px solid var(--border);
    padding: 16px;
    border-radius: 6px;
}

.record-details {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 4px;
    word-break: break-all;
}

.record-ttl {
    display: flex;
    align-items: center;
    gap: 4px;
    white-space: nowrap;
}

.record-ttl svg {
    width: 14px;
    height: 14px;
}

/* Type Badges */
.type-badge {
    font-family: var(--font-mono);
    font-weight: 700;
    font-size: 0.85rem;
    padding: 4px 8px;
    border-radius: 4px;
    width: 60px;
    text-align: center;
    background: var(--bg-input);
}

.type-A,
.type-AAAA {
    color: var(--green);
    border: 1px solid var(--green);
}

.type-CNAME {
    color: var(--yellow);
    border: 1px solid var(--yellow);
}

.type-MX {
    color: var(--blue);
    border: 1px solid var(--blue);
}

.type-TXT {
    color: var(--purple);
    border: 1px solid var(--purple);
}

.type-NS,
.type-SOA {
    color: var(--cyan);
    border: 1px solid var(--cyan);
}

/* Badges */
.badge {
    background: var(--bg-input);
    color: var(--text-main);
    padding: 2px 8px;
    border-radius: 12px;
    font-size: 0.8rem;
    font-weight: 600;
}

/* Auth Cards */
.auth-card {
    background: var(--bg-main);
    border: 1px solid var(--border);
    border-radius: 6px;
    padding: 16px;
    margin-bottom: 16px;
}

.auth-card:last-child {
    margin-bottom: 0;
}

.auth-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 12px;
}

.auth-header h3 {
    font-size: 1rem;
    font-weight: 600;
}

.status-badge {
    font-size: 0.75rem;
    font-weight: 700;
    padding: 2px 6px;
    border-radius: 4px;
    text-transform: uppercase;
}

.status-pass {
    background: rgba(16, 185, 129, 0.2);
    color: var(--green);
}

.status-fail {
    background: rgba(239, 68, 68, 0.2);
    color: var(--red);
}

.status-warn {
    background: rgba(245, 158, 11, 0.2);
    color: var(--yellow);
}

.status-none {
    background: var(--bg-input);
    color: var(--text-muted);
}

.auth-body {
    word-wrap: break-word;
    word-break: break-all;
}

/* Propagation */
.propagation-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.prop-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: var(--bg-main);
    padding: 12px 16px;
    border-radius: 6px;
    border: 1px solid var(--border);
}

.prop-server {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.9rem;
}

.server-icon {
    width: 16px;
    height: 16px;
}

.prop-status {
    font-family: var(--font-mono);
    font-size: 0.85rem;
}

/* CNAME Chain */
.cname-chain {
    display: flex;
    flex-direction: column;
    gap: 8px;
    position: relative;
    padding-left: 20px;
    margin-top: 16px;
}

.cname-chain::before {
    content: '';
    position: absolute;
    top: 10px;
    bottom: 10px;
    left: 6px;
    width: 2px;
    background: var(--border-light);
}

.chain-node {
    position: relative;
    background: var(--bg-main);
    border: 1px solid var(--border);
    padding: 10px 16px;
    border-radius: 6px;
    font-family: var(--font-mono);
    font-size: 0.9rem;
}

.chain-node::before {
    content: '';
    position: absolute;
    left: -18px;
    top: 50%;
    transform: translateY(-50%);
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: var(--cyan);
    border: 2px solid var(--bg-panel);
}

.chain-node:last-child::before {
    background: var(--green);
}

/* Loading state */
.loading-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 60px 0;
    gap: 16px;
    color: var(--cyan);
}

.spinner {
    width: 40px;
    height: 40px;
    border: 3px solid rgba(6, 182, 212, 0.2);
    border-top-color: var(--cyan);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

.spin {
    animation: spin 2s linear infinite;
}

/* Tooltip */
.tooltip-wrap {
    position: relative;
    cursor: help;
}

.tooltip {
    visibility: hidden;
    position: absolute;
    bottom: 100%;
    left: 50%;
    transform: translateX(-50%);
    margin-bottom: 8px;
    background: var(--text-main);
    color: var(--bg-main);
    padding: 4px 8px;
    border-radius: 4px;
    font-size: 0.75rem;
    white-space: nowrap;
    opacity: 0;
    transition: opacity 0.2s;
    font-family: var(--font-sans);
}

.tooltip-wrap:hover .tooltip {
    visibility: visible;
    opacity: 1;
}

.bg-white {
    background-color: #fff;
}

.p-1 {
    padding: 0.25rem;
}

.rounded {
    border-radius: 0.25rem;
}

/* Toast */
.toast {
    position: fixed;
    bottom: 24px;
    left: 50%;
    transform: translateX(-50%) translateY(100px);
    background: var(--bg-panel);
    color: var(--text-main);
    padding: 12px 24px;
    border-radius: 30px;
    border: 1px solid var(--border);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.5);
    font-size: 0.9rem;
    transition: transform 0.3s;
    z-index: 1000;
}

.toast.show {
    transform: translateX(-50%) translateY(0);
}

/* Responsive */
@media (max-width: 900px) {
    .results-grid {
        grid-template-columns: 1fr;
    }

    .query-form {
        flex-direction: column;
        align-items: stretch;
    }
}