/* ============================================
   DNS Toolkit - Styles
   ============================================ */

:root {
    --bg-primary: #0a0a0a;
    --bg-secondary: #141414;
    --bg-tertiary: #1a1a1a;
    --bg-input: #111111;
    --accent-primary: #1255DD;
    --accent-secondary: #00d4ff;
    --accent-success: #10b981;
    --accent-warning: #f59e0b;
    --accent-danger: #ef4444;
    --text-primary: #ffffff;
    --text-secondary: #bbbbbb;
    --text-muted: #666666;
    --border-color: #2a2a2a;
    --border-focus: #1255DD;
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-heading: 'Space Grotesk', var(--font-sans);
    --font-mono: 'JetBrains Mono', 'Fira Code', 'Cascadia Code', 'Consolas', monospace;
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --transition-fast: 150ms ease;
    --transition-normal: 250ms ease;
}

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

body {
    font-family: var(--font-sans);
    font-size: 16px;
    line-height: 1.6;
    color: var(--text-primary);
    background: var(--bg-primary);
    -webkit-font-smoothing: antialiased;
}

/* ============================================
   Layout
   ============================================ */

.page-wrapper {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.container {
    max-width: 1400px;
    width: 100%;
    margin: 0 auto;
    padding: 0 2rem;
}

main {
    flex: 1;
    padding: 2.5rem 0 4rem;
}

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

.page-header {
    margin-bottom: 2rem;
}

.page-header h1 {
    font-family: var(--font-heading);
    font-size: 2.25rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    letter-spacing: -0.02em;
}

.page-header p {
    color: var(--text-secondary);
    font-size: 1.1rem;
    max-width: 700px;
}

/* ============================================
   Search Bar
   ============================================ */

.search-bar {
    display: flex;
    gap: 1rem;
    margin-bottom: 2rem;
    align-items: stretch;
}

.search-input-wrapper {
    flex: 1;
    position: relative;
}

.search-input-wrapper .domain-icon {
    position: absolute;
    left: 1.25rem;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-muted);
    pointer-events: none;
}

#domain-input {
    width: 100%;
    padding: 1rem 1.25rem 1rem 3.25rem;
    font-family: var(--font-mono);
    font-size: 1.125rem;
    color: var(--text-primary);
    background: var(--bg-input);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-md);
    outline: none;
    transition: border-color var(--transition-fast);
}

#domain-input:focus {
    border-color: var(--border-focus);
}

#domain-input::placeholder {
    color: var(--text-muted);
    font-family: var(--font-sans);
}

#record-type {
    padding: 1rem 1.25rem;
    font-family: var(--font-sans);
    font-size: 1rem;
    color: var(--text-primary);
    background: var(--bg-input);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-md);
    outline: none;
    cursor: pointer;
    min-width: 140px;
    color-scheme: dark;
    transition: border-color var(--transition-fast);
}

#record-type:focus {
    border-color: var(--border-focus);
}

.btn-lookup {
    display: flex;
    align-items: center;
    gap: 0.625rem;
    padding: 1rem 2rem;
    font-family: var(--font-sans);
    font-size: 1rem;
    font-weight: 600;
    color: #fff;
    background: var(--accent-primary);
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    white-space: nowrap;
    transition: background var(--transition-fast), opacity var(--transition-fast);
}

.btn-lookup:hover {
    background: #0e47b5;
}

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

.btn-lookup.loading .btn-icon {
    animation: spin 1s linear infinite;
}

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

/* ============================================
   Tabs
   ============================================ */

.tool-tabs {
    display: flex;
    gap: 0.25rem;
    border-bottom: 2px solid var(--border-color);
    margin-bottom: 2rem;
    overflow-x: auto;
}

.tab-btn {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.875rem 1.5rem;
    font-family: var(--font-sans);
    font-size: 1rem;
    font-weight: 500;
    color: var(--text-secondary);
    background: none;
    border: none;
    border-bottom: 3px solid transparent;
    margin-bottom: -2px;
    cursor: pointer;
    white-space: nowrap;
    transition: color var(--transition-fast), border-color var(--transition-fast);
}

.tab-btn:hover {
    color: var(--text-primary);
}

.tab-btn.active {
    color: var(--accent-secondary);
    border-bottom-color: var(--accent-secondary);
}

.tab-btn svg {
    flex-shrink: 0;
}

.tab-panel.hidden {
    display: none;
}

/* ============================================
   Results Area
   ============================================ */

#results-area.hidden {
    display: none;
}

.query-meta {
    display: flex;
    gap: 2rem;
    padding: 0.75rem 0;
    margin-bottom: 1.5rem;
    color: var(--text-muted);
    font-size: 0.9rem;
    border-bottom: 1px solid var(--border-color);
}

.query-meta span {
    display: flex;
    align-items: center;
    gap: 0.375rem;
}

/* ============================================
   Record Sections
   ============================================ */

.record-section {
    margin-bottom: 2rem;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    overflow: hidden;
}

.record-header {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem 1.5rem;
    background: var(--bg-tertiary);
    border-bottom: 1px solid var(--border-color);
}

.record-type-badge {
    font-family: var(--font-mono);
    font-size: 0.875rem;
    font-weight: 700;
    color: var(--accent-secondary);
    background: rgba(0, 212, 255, 0.1);
    padding: 0.25rem 0.75rem;
    border-radius: var(--radius-sm);
    letter-spacing: 0.5px;
}

.record-count {
    color: var(--text-muted);
    font-size: 0.9rem;
}

.record-time {
    color: var(--text-muted);
    font-size: 0.9rem;
    margin-left: auto;
    font-family: var(--font-mono);
}

/* ============================================
   Tables
   ============================================ */

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

.record-table th {
    text-align: left;
    padding: 0.875rem 1.5rem;
    font-family: var(--font-sans);
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    border-bottom: 1px solid var(--border-color);
}

.record-table td {
    padding: 0.875rem 1.5rem;
    font-size: 1rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.04);
    vertical-align: top;
}

.record-table tr:last-child td {
    border-bottom: none;
}

.record-table tr:hover td {
    background: rgba(255, 255, 255, 0.02);
}

.mono-value {
    font-family: var(--font-mono);
    font-size: 0.9375rem;
    word-break: break-all;
}

.name-cell {
    color: var(--text-secondary);
    max-width: 200px;
}

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

.ttl-cell {
    color: var(--text-muted);
    font-family: var(--font-mono);
    font-size: 0.875rem;
    white-space: nowrap;
    width: 80px;
}

.priority-cell {
    font-family: var(--font-mono);
    font-weight: 700;
    color: var(--accent-secondary);
    width: 80px;
}

.field-label {
    font-weight: 600;
    color: var(--text-secondary);
    width: 120px;
}

.resolver-name {
    font-weight: 600;
    white-space: nowrap;
}

/* ============================================
   Propagation
   ============================================ */

.propagation-status {
    font-size: 0.875rem;
    font-weight: 600;
    padding: 0.25rem 0.75rem;
    border-radius: var(--radius-sm);
}

.status-consistent {
    color: var(--accent-success);
    background: rgba(16, 185, 129, 0.1);
}

.status-inconsistent {
    color: var(--accent-danger);
    background: rgba(239, 68, 68, 0.1);
}

/* ============================================
   Analysis Cards (Mail/Security)
   ============================================ */

.analysis-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    margin-bottom: 1.5rem;
}

.analysis-header {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 1rem;
}

.analysis-header h3 {
    font-family: var(--font-heading);
    font-size: 1.25rem;
    font-weight: 600;
}

.status-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    border-radius: 50%;
    font-size: 1rem;
    font-weight: 700;
    flex-shrink: 0;
}

.status-icon-pass {
    background: rgba(16, 185, 129, 0.15);
    color: var(--accent-success);
}

.status-icon-warn {
    background: rgba(245, 158, 11, 0.15);
    color: var(--accent-warning);
}

.status-icon-fail {
    background: rgba(239, 68, 68, 0.15);
    color: var(--accent-danger);
}

.analysis-raw {
    background: var(--bg-primary);
    padding: 1rem 1.25rem;
    border-radius: var(--radius-md);
    margin-bottom: 1.25rem;
    font-size: 0.875rem;
    line-height: 1.6;
    word-break: break-all;
    border: 1px solid var(--border-color);
}

.analysis-details {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.detail-row {
    display: flex;
    gap: 1rem;
    padding: 0.5rem 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.04);
}

.detail-row:last-child {
    border-bottom: none;
}

.detail-label {
    font-weight: 600;
    color: var(--text-secondary);
    min-width: 180px;
    flex-shrink: 0;
    font-size: 0.9375rem;
}

.detail-value {
    color: var(--text-primary);
    font-size: 0.9375rem;
}

.dkim-value {
    font-size: 0.8125rem;
}

.text-pass { color: var(--accent-success); }
.text-warn { color: var(--accent-warning); }
.text-fail { color: var(--accent-danger); }

.analysis-message {
    color: var(--text-secondary);
    font-size: 1rem;
    line-height: 1.6;
}

/* ============================================
   Services Summary
   ============================================ */

.services-summary {
    margin-bottom: 2rem;
    padding: 1.5rem;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
}

.services-summary h3 {
    font-family: var(--font-heading);
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: 1rem;
}

.service-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.service-tag {
    font-size: 0.875rem;
    font-weight: 500;
    padding: 0.375rem 0.875rem;
    background: rgba(18, 85, 221, 0.12);
    color: var(--accent-secondary);
    border-radius: 20px;
    border: 1px solid rgba(0, 212, 255, 0.15);
}

/* ============================================
   TXT Record Display
   ============================================ */

.txt-record {
    padding: 0.875rem 1.5rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.04);
    font-size: 0.875rem;
    line-height: 1.6;
    word-break: break-all;
}

.txt-record:last-child {
    border-bottom: none;
}

/* ============================================
   No Results / Error
   ============================================ */

.no-results, .error-results {
    text-align: center;
    padding: 3rem 2rem;
    color: var(--text-muted);
    font-size: 1rem;
}

.error-results {
    color: var(--accent-danger);
}

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

/* ============================================
   Privacy Notice
   ============================================ */

.privacy-notice {
    text-align: center;
    margin-top: 3rem;
    padding: 1rem;
    color: var(--text-muted);
    font-size: 0.9375rem;
}

.privacy-notice strong {
    color: var(--text-secondary);
}

/* ============================================
   Toast
   ============================================ */

.toast {
    position: fixed;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%) translateY(20px);
    background: var(--bg-tertiary);
    color: var(--text-primary);
    padding: 0.875rem 1.5rem;
    border-radius: var(--radius-md);
    border: 1px solid var(--border-color);
    font-size: 0.9375rem;
    opacity: 0;
    pointer-events: none;
    transition: opacity var(--transition-normal), transform var(--transition-normal);
    z-index: 9999;
}

.toast.show {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
    pointer-events: auto;
}

.toast.hidden {
    display: none;
}

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

@media (max-width: 768px) {
    .container { padding: 0 1rem; }
    .page-header h1 { font-size: 1.75rem; }

    .search-bar {
        flex-direction: column;
    }

    #record-type {
        min-width: unset;
    }

    .tool-tabs {
        gap: 0;
    }

    .tab-btn {
        padding: 0.75rem 1rem;
        font-size: 0.9375rem;
    }

    .tab-btn .tab-label {
        display: none;
    }

    .detail-row {
        flex-direction: column;
        gap: 0.25rem;
    }

    .detail-label {
        min-width: unset;
    }

    .record-table th,
    .record-table td {
        padding: 0.75rem 1rem;
    }
}

@media (max-width: 480px) {
    main { padding: 1.5rem 0 3rem; }
    .page-header h1 { font-size: 1.5rem; }
}