/* ========================================
   CSS Variables - Light Theme (Default)
   ======================================== */
:root {
    /* Primary Colors */
    --primary-color: #2563eb;
    --primary-dark: #1d4ed8;
    --primary-light: #3b82f6;
    --primary-hover: #1d4ed8;
    
    /* Status Colors */
    --success-color: #10b981;
    --warning-color: #f59e0b;
    --error-color: #ef4444;
    --info-color: #6b7280;
    
    /* Background Colors */
    --bg-color: #f1f2fe;
    --bg-secondary: #f1f5f9;
    --card-bg: #ffffff;
    
    /* Text Colors */
    --text-primary: #1f2937;
    --text-secondary: #4b5563;
    --text-muted: #9ca3af;
    --text-inverse: #ffffff;
    
    /* Border Colors */
    --border-color: #e5e7eb;
    --border-light: #f3f4f6;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    
    /* Border Radius */
    --radius-sm: 4px;
    --radius: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    
    /* Spacing */
    --space-xs: 0.25rem;
    --space-sm: 0.5rem;
    --space-md: 1rem;
    --space-lg: 1.5rem;
    --space-xl: 2rem;
    --space-2xl: 3rem;
    
    /* Typography */
    --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    --font-mono: 'SF Mono', Monaco, 'Cascadia Code', 'Roboto Mono', Consolas, monospace;
    
    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 250ms ease;
}

/* ========================================
   CSS Variables - Dark Theme
   ======================================== */
[data-theme="dark"] {
    --bg-color: #0f172a;
    --bg-secondary: #1e293b;
    --card-bg: #1e293b;
    
    --text-primary: #f1f5f9;
    --text-secondary: #cbd5e1;
    --text-muted: #64748b;
    
    --border-color: #334155;
    --border-light: #1e293b;
    
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.3);
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.4), 0 2px 4px -1px rgba(0, 0, 0, 0.2);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.5), 0 4px 6px -2px rgba(0, 0, 0, 0.3);
}

/* ========================================
   Reset & Base Styles
   ======================================== */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-sans);
    background-color: var(--bg-color);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    transition: background-color var(--transition-base), color var(--transition-base);
}

a {
    color: var(--primary-color);
    text-decoration: none;
    transition: color var(--transition-fast);
}

a:hover {
    color: var(--primary-hover);
}

/* ========================================
   Container
   ======================================== */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-lg);
}

/* ========================================
   Header
   ======================================== */
.site-header {
    background-color: var(--card-bg);
    border-bottom: 1px solid var(--border-color);
    box-shadow: var(--shadow-sm);
    position: sticky;
    top: 0;
    z-index: 100;
    transition: background-color var(--transition-base), border-color var(--transition-base);
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 64px;
}

.logo {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.logo-text {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
    letter-spacing: -0.5px;
}

.logo-highlight {
    color: var(--primary-color);
}

/* Header Navigation */
.header-nav {
    display: flex;
    gap: var(--space-lg);
}

.nav-link {
    color: var(--text-secondary);
    font-weight: 500;
    font-size: 0.9375rem;
    padding: var(--space-sm) 0;
    position: relative;
}

.nav-link:hover {
    color: var(--primary-color);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--primary-color);
    transition: width var(--transition-fast);
}

.nav-link:hover::after {
    width: 100%;
}

/* Header Controls */
.header-controls {
    display: flex;
    align-items: center;
    gap: var(--space-md);
}

/* Language Switcher */
.lang-switcher {
    position: relative;
}

.lang-btn {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    padding: var(--space-sm) var(--space-md);
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    color: var(--text-secondary);
    font-size: 0.875rem;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.lang-btn:hover {
    border-color: var(--primary-color);
    color: var(--primary-color);
}

.lang-dropdown {
    position: absolute;
    top: 100%;
    right: 0;
    margin-top: var(--space-xs);
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    box-shadow: var(--shadow-lg);
    min-width: 120px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all var(--transition-fast);
    z-index: 200;
}

.lang-switcher:hover .lang-dropdown {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.lang-option {
    display: block;
    padding: var(--space-sm) var(--space-md);
    color: var(--text-secondary);
    font-size: 0.875rem;
    transition: all var(--transition-fast);
}

.lang-option:hover,
.lang-option.active {
    background: var(--bg-secondary);
    color: var(--primary-color);
}

/* Theme Toggle */
.theme-toggle {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    color: var(--text-secondary);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.theme-toggle:hover {
    border-color: var(--primary-color);
    color: var(--primary-color);
}

.theme-icon {
    position: absolute;
    transition: opacity var(--transition-fast), transform var(--transition-fast);
}

[data-theme="light"] .moon,
[data-theme="dark"] .sun {
    opacity: 0;
    transform: rotate(90deg);
}

[data-theme="light"] .sun,
[data-theme="dark"] .moon {
    opacity: 1;
    transform: rotate(0);
}

/* ========================================
   Main Content
   ======================================== */
.main-content {
    flex: 1;
    padding: var(--space-xl) 0;
}

/* ========================================
   Hero Section
   ======================================== */
.hero-section {
    padding: var(--space-2xl) 0;
    text-align: center;
}

.hero-content {
    max-width: 600px;
    margin: 0 auto;
}

.hero-title {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--text-primary);
    margin-bottom: var(--space-md);
    letter-spacing: -1px;
}

.hero-subtitle {
    font-size: 1.125rem;
    color: var(--text-secondary);
    margin-bottom: var(--space-xl);
}

/* Search Form */
.search-form {
    margin-bottom: var(--space-lg);
}

.search-box-wrapper {
    display: flex;
    gap: var(--space-sm);
    background: var(--card-bg);
    padding: var(--space-xs);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow);
    border: 2px solid var(--border-color);
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.search-box-wrapper:focus-within {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 4px rgba(37, 99, 235, 0.1);
}

.search-input {
    flex: 1;
    padding: var(--space-md) var(--space-lg);
    border: none;
    background: transparent;
    color: var(--text-primary);
    font-size: 1rem;
    outline: none;
}

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

.search-btn {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-md) var(--space-xl);
    background: var(--primary-color);
    color: var(--text-inverse);
    border: none;
    border-radius: var(--radius);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: background-color var(--transition-fast), transform var(--transition-fast);
}

.search-btn:hover {
    background: var(--primary-hover);
    transform: translateY(-1px);
}

.search-btn:active {
    transform: translateY(0);
}

/* Quick Links */
.quick-links {
    display: flex;
    align-items: center;
    justify-content: center;
    flex-wrap: wrap;
    gap: var(--space-sm);
    font-size: 0.875rem;
}

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

.quick-link {
    color: var(--primary-color);
    font-weight: 500;
}

.quick-link:hover {
    text-decoration: underline;
}

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

/* Error Message */
.error-message {
    padding: var(--space-md);
    background: rgba(239, 68, 68, 0.1);
    border: 1px solid var(--error-color);
    border-radius: var(--radius);
    color: var(--error-color);
    margin-top: var(--space-md);
}

/* ========================================
   Features Section
   ======================================== */
.features-section {
    padding: var(--space-2xl) 0;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: var(--space-lg);
}

.feature-card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--space-xl);
    text-align: center;
    transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

.feature-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.feature-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto var(--space-md);
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    color: var(--text-inverse);
    border-radius: var(--radius-xl);
}

.feature-title {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--space-sm);
}

.feature-desc {
    font-size: 0.9375rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

/* ========================================
   Result Section
   ======================================== */
.result-section {
    padding: var(--space-xl) 0;
}

.result-header {
    text-align: center;
    margin-bottom: var(--space-xl);
}

.result-title {
    font-size: 1.875rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--space-sm);
}

.result-subtitle {
    font-size: 1.125rem;
    color: var(--text-secondary);
}

.ip-display {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--primary-color);
    font-family: var(--font-mono);
    margin-top: var(--space-md);
}

/* Result Grid */
.result-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--space-lg);
    margin-bottom: var(--space-xl);
}

.result-card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
}

.card-title {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--space-md);
    padding-bottom: var(--space-sm);
    border-bottom: 1px solid var(--border-color);
}

/* Info List */
.info-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.info-item {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: var(--space-md);
}

.info-label {
    color: var(--text-muted);
    font-size: 0.875rem;
    flex-shrink: 0;
}

.info-value {
    color: var(--text-primary);
    font-weight: 500;
    text-align: right;
    word-break: break-all;
}

/* Status List */
.status-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.status-item {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.status-dot {
    width: 8px;
    height: 8px;
    background: var(--success-color);
    border-radius: 50%;
    flex-shrink: 0;
}

.status-text {
    color: var(--text-secondary);
    font-size: 0.875rem;
    font-family: var(--font-mono);
}

/* Name Servers */
.ns-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.ns-item {
    padding: var(--space-sm) var(--space-md);
    background: var(--bg-secondary);
    border-radius: var(--radius);
    color: var(--text-secondary);
    font-family: var(--font-mono);
    font-size: 0.875rem;
}

/* DNS Section */
.dns-section {
    margin-bottom: var(--space-xl);
}

.section-title {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--space-lg);
}

.dns-tabs {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--space-lg);
}

.dns-tab {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
}

.dns-type {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--primary-color);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: var(--space-md);
}

.dns-records {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.dns-record {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-sm);
    padding: var(--space-sm);
    background: var(--bg-secondary);
    border-radius: var(--radius);
    font-size: 0.8125rem;
}

.record-name {
    color: var(--text-secondary);
    font-family: var(--font-mono);
}

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

.record-data {
    color: var(--text-primary);
    font-weight: 500;
    font-family: var(--font-mono);
    word-break: break-all;
}

/* Raw Data Section */
.raw-data-section {
    margin-bottom: var(--space-xl);
}

.raw-data {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
    font-family: var(--font-mono);
    font-size: 0.8125rem;
    line-height: 1.6;
    color: var(--text-secondary);
    overflow-x: auto;
    white-space: pre-wrap;
    word-break: break-all;
}

/* Error Card */
.error-card {
    background: rgba(239, 68, 68, 0.05);
    border: 1px solid var(--error-color);
    border-radius: var(--radius-lg);
    padding: var(--space-xl);
    text-align: center;
}

/* ========================================
   Calculator
   ======================================== */
.calculator-form-wrapper {
    max-width: 600px;
    margin: 0 auto var(--space-xl);
}

.calculator-form {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
}

.calc-inputs {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-md);
    align-items: flex-end;
}

.calc-field {
    flex: 1;
    min-width: 150px;
}

.calc-label {
    display: block;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-secondary);
    margin-bottom: var(--space-sm);
}

.calc-input {
    width: 100%;
    padding: var(--space-md);
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    color: var(--text-primary);
    font-size: 1rem;
    font-family: var(--font-mono);
    transition: border-color var(--transition-fast);
}

.calc-input:focus {
    outline: none;
    border-color: var(--primary-color);
}

.calc-btn {
    padding: var(--space-md) var(--space-xl);
    background: var(--primary-color);
    color: var(--text-inverse);
    border: none;
    border-radius: var(--radius);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: background-color var(--transition-fast);
}

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

/* Calculator Results */
.calculator-results {
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
}

.calc-card {
    text-align: center;
    padding: var(--space-md);
}

.calc-label-sm {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: var(--space-sm);
}

.calc-value {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-primary);
    font-family: var(--font-mono);
}

/* Range Visualization */
.range-visualization {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
    margin-bottom: var(--space-xl);
}

.viz-title {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--space-md);
}

.range-bar {
    display: flex;
    height: 48px;
    border-radius: var(--radius);
    overflow: hidden;
    margin-bottom: var(--space-md);
}

.range-segment {
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--text-inverse);
    position: relative;
}

.range-segment.network {
    background: var(--primary-color);
    flex: 0 0 80px;
}

.range-segment.usable {
    background: var(--success-color);
    flex: 1;
}

.range-segment.broadcast {
    background: var(--error-color);
    flex: 0 0 80px;
}

.range-label {
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    padding: 0 var(--space-xs);
}

.range-legend {
    display: flex;
    justify-content: center;
    gap: var(--space-lg);
}

.legend-item {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.legend-color {
    width: 16px;
    height: 16px;
    border-radius: var(--radius-sm);
}

.legend-color.network {
    background: var(--primary-color);
}

.legend-color.usable {
    background: var(--success-color);
}

.legend-color.broadcast {
    background: var(--error-color);
}

.calc-examples {
    margin-top: var(--space-xl);
}

/* ========================================
   Footer
   ======================================== */
.site-footer {
    background: var(--card-bg);
    border-top: 1px solid var(--border-color);
    padding: var(--space-lg) 0;
    margin-top: auto;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--space-md);
}

.copyright {
    font-size: 0.875rem;
    color: var(--text-muted);
}

.footer-links {
    display: flex;
    gap: var(--space-lg);
}

.footer-links a {
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.footer-links a:hover {
    color: var(--primary-color);
}

/* ========================================
   Responsive Design
   ======================================== */
@media (max-width: 768px) {
    .header-content {
        height: 56px;
    }
    
    .header-nav {
        display: none;
    }
    
    .hero-title {
        font-size: 1.875rem;
    }
    
    .search-box-wrapper {
        flex-direction: column;
    }
    
    .search-btn {
        width: 100%;
        justify-content: center;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
    }
    
    .result-grid {
        grid-template-columns: 1fr;
    }
    
    .ip-display {
        font-size: 1.75rem;
    }
    
    .calc-inputs {
        flex-direction: column;
    }
    
    .calc-btn {
        width: 100%;
    }
    
    .range-bar {
        flex-direction: column;
        height: auto;
    }
    
    .range-segment {
        padding: var(--space-sm);
    }
    
    .range-segment.network,
    .range-segment.broadcast {
        flex: none;
    }
    
    .footer-content {
        flex-direction: column;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 var(--space-md);
    }
    
    .hero-section {
        padding: var(--space-xl) 0;
    }
    
    .quick-links {
        font-size: 0.8125rem;
    }
    
    .dns-tabs {
        grid-template-columns: 1fr;
    }
}

/* ========================================
   Home Page Styles (dig.ua style)
   ======================================== */

.home-page {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: flex-start;
    padding-top: 12vh;
    padding-bottom: 2rem;
    position: relative;
}

/* Top Controls */
.top-controls {
    position: absolute;
    top: 1.5rem;
    right: 1.5rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.top-controls .lang-btn {
    background: none;
    border: none;
    color: var(--text-secondary);
    font-size: 0.875rem;
    font-weight: 500;
    cursor: pointer;
    padding: 0.25rem 0.5rem;
}

.top-controls .lang-btn:hover {
    color: var(--primary-color);
}

.top-controls .lang-dropdown {
    position: absolute;
    top: 100%;
    right: 0;
    margin-top: 0.5rem;
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    padding: 0.5rem 0;
    min-width: 100px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all var(--transition-fast);
    z-index: 200;
}

.top-controls .lang-switcher:hover .lang-dropdown {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.top-controls .lang-option {
    display: block;
    padding: 0.5rem 1rem;
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.875rem;
}

.top-controls .lang-option:hover,
.top-controls .lang-option.active {
    background: var(--bg-secondary);
    color: var(--primary-color);
}

.top-controls .theme-toggle {
    background: none;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    padding: 0.25rem;
    display: flex;
    align-items: center;
    justify-content: center;
}

.top-controls .theme-toggle:hover {
    color: var(--primary-color);
}

/* Home Content */
.home-content {
    text-align: center;
    width: 100%;
    max-width: 880px;
}

.home-title {
    font-size: 2rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 2rem;
}

/* Home Search Form */
.home-search-form {
    display: flex;
    align-items: center;
    background: var(--bg-color);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    padding: 0.5rem 0.75rem;
    margin-bottom: 1.5rem;
    transition: border-color 0.2s;
}

.home-search-form:focus-within {
    border-color: var(--primary-color);
}

.search-prefix {
    font-size: 1rem;
    font-weight: 500;
    color: var(--text-secondary);
    margin-right: 0.75rem;
    user-select: none;
}

.home-search-input {
    flex: 1;
    border: none;
    background: none;
    font-size: 1rem;
    color: var(--text-primary);
    outline: none;
}

.home-search-input::placeholder {
    color: var(--text-muted);
}

/* Home Examples */
.home-examples {
    display: flex;
    justify-content: center;
    gap: 1.5rem;
    flex-wrap: wrap;
}

.home-examples a {
    color: var(--primary-color);
    text-decoration: none;
    font-size: 0.9375rem;
}

.home-examples a:hover {
    text-decoration: underline;
}

/* Home Logo */
.home-logo {
    margin-bottom: 1.25rem;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
}

.home-logo .logo-img {
    width: 100px;
    height: 100px;
    object-fit: contain;
}

.home-logo .logo-text {
    font-size: 1.5rem;
    font-weight: 600;
}

/* Multi-color title words */
.word-dig { color: #2563eb; }
.word-your { color: #10b981; }
.word-domain { color: #f59e0b; }
.word-or { color: #6b7280; }
.word-ip { color: #ef4444; }
.word-exclaim { color: #2563eb; }

/* Ad Banners (Desktop Only) - Plain text style */
.ad-banners {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    margin-top: 20px;
    max-width: 600px;
}

/* Two-column row layout */
.ad-banners-row {
    flex-direction: row;
    gap: 0.75rem;
    max-width: 550px;
}

.ad-banner {
    display: flex;
    align-items: flex-start;
    gap: 0.5rem;
    padding: 0;
    background: none;
    border: none;
    text-decoration: none;
}

/* Card-style ad banners */
.ad-banner-card {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 0.35rem;
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    padding: 0.875rem 1rem;
    text-decoration: none;
    transition: border-color 0.2s, box-shadow 0.2s;
}

.ad-banner-card:hover {
    border-color: var(--primary-color);
    box-shadow: 0 2px 8px rgba(37, 99, 235, 0.1);
}

.ad-banner-card .ad-label {
    font-size: 0.75rem;
}

.ad-banner-card .ad-text {
    font-size: 0.8125rem;
    line-height: 1.5;
}

.ad-banner-card .ad-text strong {
    color: var(--primary-color);
}

.ad-banner:hover .ad-text {
    text-decoration: underline;
}

.ad-label {
    color: #dc2626;
    font-weight: 700;
    font-size: 0.875rem;
    flex-shrink: 0;
}

.ad-text {
    color: var(--text-secondary);
    font-size: 0.875rem;
    line-height: 1.4;
}

/* Hide ads on mobile */
@media (max-width: 768px) {
    .ad-banners {
        display: none;
    }
}

/* ============================================
   RESULTS PAGE STYLES (dig.ua style)
   ============================================ */

/* Results Header */
.results-header {
    background: var(--card-bg);
    border-bottom: 1px solid var(--border-color);
    padding: 0.75rem 0;
    position: sticky;
    top: 0;
    z-index: 100;
}

.results-header-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
}

/* Left: Search Section */
.results-search-section {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    flex: 1;
    max-width: 450px;
    height: 36px;
}

.results-logo {
    display: flex;
    align-items: center;
    justify-content: center;
}

.results-logo img {
    width: 32px;
    height: 32px;
}

.results-search-label {
    font-size: 1rem;
    font-weight: 500;
    color: var(--text-secondary);
    user-select: none;
}

.results-search-form {
    display: flex;
    align-items: center;
    flex: 1;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    padding: 0.25rem 0.75rem;
    height: 32px;
    transition: border-color 0.2s;
}

.results-search-form:focus-within {
    border-color: var(--primary-color);
}

.results-search-input {
    flex: 1;
    border: none;
    background: none;
    font-size: 1rem;
    color: var(--text-primary);
    outline: none;
    min-width: 0;
}

.results-search-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 28px;
    height: 28px;
    background: var(--primary-color);
    border: none;
    border-radius: var(--radius-sm);
    color: white;
    cursor: pointer;
}

.results-search-btn:hover {
    background: var(--primary-hover);
}

/* Right: Controls */
.results-controls {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

/* Results Main */
.results-main {
    padding: 1.5rem 0;
    min-height: calc(100vh - 140px);
}

/* Results Layout - Two Columns */
.results-layout {
    display: grid;
    grid-template-columns: 1fr 320px;
    gap: 1.5rem;
}

/* Left Column */
.results-left {
    min-width: 0;
}

/* Tabs Navigation */
.results-tabs {
    display: flex;
    gap: 0.25rem;
    border-bottom: 2px solid var(--border-color);
    margin-bottom: 1rem;
}

.tab-btn {
    padding: 0.75rem 1.25rem;
    background: none;
    border: none;
    border-bottom: 2px solid transparent;
    margin-bottom: -2px;
    font-size: 0.9375rem;
    font-weight: 500;
    color: var(--text-secondary);
    cursor: pointer;
    transition: all 0.2s;
    display: flex;
    align-items: center;
    gap: 0.4rem;
}

.tab-icon {
    flex-shrink: 0;
    opacity: 0.85;
}

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

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

/* Tab Content */
.tab-content {
    display: none;
}

.tab-content.active {
    display: block;
}

/* Right Column - Sidebar */
.results-sidebar {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    align-self: start;
    position: sticky;
    top: 80px;
    max-height: calc(100vh - 100px);
    overflow-y: auto;
    padding-top: 0;
}

.sidebar-card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    padding: 1rem;
}

.sidebar-card h3 {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.025em;
}

/* Results Footer */
.results-footer {
    background: var(--card-bg);
    border-top: 1px solid var(--border-color);
    padding: 1rem 0;
    text-align: center;
}

.results-footer p {
    font-size: 0.875rem;
    color: var(--text-muted);
    margin: 0;
}

.results-footer a {
    color: var(--primary-color);
    text-decoration: none;
}

.results-footer a:hover {
    text-decoration: underline;
}

/* ============================================
   RESULT CARDS (for results pages)
   ============================================ */

.results-left .result-card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
    margin-bottom: var(--space-lg);
}

.results-left .card-title {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--space-md);
    padding-bottom: var(--space-sm);
    border-bottom: 1px solid var(--border-color);
}

.results-left .info-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.results-left .info-item {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: var(--space-md);
}

.results-left .info-label {
    color: var(--text-muted);
    font-size: 0.875rem;
    flex-shrink: 0;
}

.results-left .info-value {
    color: var(--text-primary);
    font-weight: 500;
    text-align: right;
    word-break: break-all;
}

.results-left .status-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.results-left .status-item {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.results-left .status-dot {
    width: 8px;
    height: 8px;
    background: var(--success-color);
    border-radius: 50%;
    flex-shrink: 0;
}

.results-left .status-text {
    color: var(--text-secondary);
    font-size: 0.875rem;
    font-family: var(--font-mono);
}

.results-left .ns-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.results-left .ns-item {
    padding: var(--space-sm) var(--space-md);
    background: var(--bg-secondary);
    border-radius: var(--radius);
    color: var(--text-secondary);
    font-family: var(--font-mono);
    font-size: 0.875rem;
}

.results-left .raw-data {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    padding: var(--space-md);
    font-family: var(--font-mono);
    font-size: 0.8125rem;
    line-height: 1.6;
    color: var(--text-secondary);
    overflow-x: auto;
    white-space: pre-wrap;
    word-break: break-all;
}

/* DNS Records in results */
.results-left .dns-records-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-lg);
}

.results-left .dns-type-group {
    border-bottom: 1px solid var(--border-light);
    padding-bottom: var(--space-lg);
}

.results-left .dns-type-group:last-child {
    border-bottom: none;
    padding-bottom: 0;
}

.results-left .dns-type {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--primary-color);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: var(--space-md);
}

.results-left .dns-records {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.results-left .dns-record {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-sm);
    padding: var(--space-sm);
    background: var(--bg-secondary);
    border-radius: var(--radius);
    font-size: 0.8125rem;
}

.results-left .record-name {
    color: var(--text-secondary);
    font-family: var(--font-mono);
}

.results-left .record-ttl {
    color: var(--text-muted);
}

.results-left .record-data {
    color: var(--text-primary);
    font-weight: 500;
    font-family: var(--font-mono);
    word-break: break-all;
}

/* Error Card */
.results-left .error-card {
    background: rgba(239, 68, 68, 0.05);
    border: 1px solid var(--error-color);
    border-radius: var(--radius-lg);
    padding: var(--space-xl);
    text-align: center;
}

.results-left .error-message {
    color: var(--error-color);
    font-size: 1rem;
}

/* ============================================
   SIDEBAR STYLES
   ============================================ */

.sidebar-card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    padding: var(--space-md);
    margin-bottom: var(--space-md);
}

.sidebar-card h3 {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: var(--space-md);
}

.sidebar-content {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.sidebar-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.875rem;
}

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

.sidebar-value {
    color: var(--text-primary);
    font-weight: 500;
}

.sidebar-card.ad-card {
    background: var(--bg-secondary);
    border-style: dashed;
}

.sidebar-card.ad-card h3 {
    color: var(--text-muted);
}

/* ============================================
   DIG QUERY SECTION
   ============================================ */

.dig-query-card {
    margin-bottom: 0;
}

.dig-query-section {
    display: flex;
    flex-direction: column;
    gap: 0;
}

.dig-tabs-bar {
    display: flex;
    gap: 0;
    border-bottom: 1px solid var(--border-color);
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
}

.dig-tabs-bar::-webkit-scrollbar {
    height: 0;
}

.dig-tab-btn {
    padding: 0.625rem 1rem;
    background: none;
    border: none;
    border-bottom: 2px solid transparent;
    margin-bottom: -1px;
    font-size: 0.8125rem;
    font-weight: 500;
    font-family: var(--font-mono);
    color: var(--text-secondary);
    cursor: pointer;
    white-space: nowrap;
    transition: all 0.2s;
}

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

.dig-tab-btn.active {
    color: var(--primary-color);
    border-bottom-color: var(--primary-color);
}

.dig-output-wrapper {
    position: relative;
}

.dig-output {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 0 0 var(--radius) var(--radius);
    padding: 1rem;
    font-family: var(--font-mono);
    font-size: 0.8125rem;
    line-height: 1.7;
    color: var(--text-secondary);
    white-space: pre-wrap;
    word-break: break-all;
    min-height: 120px;
}

.dig-error {
    color: var(--error-color);
    font-weight: 500;
}

/* IP address auto-links */
a.ip-link {
    color: var(--primary-color);
    text-decoration: none;
    border-bottom: 1px dotted var(--primary-color);
    transition: border-bottom-style 0.15s;
}

a.ip-link:hover {
    color: var(--primary-hover);
    border-bottom-style: solid;
}

.dig-copy-btn {
    position: absolute;
    top: 0.5rem;
    right: 0.5rem;
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    padding: 0.25rem 0.5rem;
    font-size: 0.875rem;
    cursor: pointer;
    opacity: 0;
    transition: opacity 0.2s;
}

.dig-output-wrapper:hover .dig-copy-btn {
    opacity: 1;
}

.dig-copy-btn:hover {
    background: var(--bg-secondary);
}

@media (max-width: 600px) {
    .dig-tabs-bar {
        gap: 0;
    }
    
    .dig-tab-btn {
        padding: 0.5rem 0.75rem;
        font-size: 0.75rem;
    }
}

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

@media (max-width: 600px) {
    .results-header {
        padding: 0.5rem 0;
    }

    .results-header-content {
        flex-direction: column;
        align-items: stretch;
        gap: 0.5rem;
    }

    .results-search-section {
        width: 100%;
        max-width: none;
    }

    .results-logo img {
        width: 26px;
        height: 26px;
    }

    .results-search-label {
        font-size: 0.9375rem;
    }

    .results-search-input {
        font-size: 0.9375rem;
    }

    .results-search-btn {
        width: 30px;
        height: 30px;
    }

    .results-controls {
        display: flex;
        justify-content: flex-end;
        gap: 0.5rem;
    }
}

/* Search Row - dig: label + search box + icon button */
.search-row {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    margin-bottom: 0.8rem;
    max-width: 880px;
}

.search-label {
    font-size: 1.25rem;
    font-weight: 500;
    color: #2563eb;
    user-select: none;
}

.search-row .home-search-form {
    display: flex;
    align-items: center;
    background: var(--card-bg);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 0.5rem 0.75rem;
    transition: border-color 0.2s, box-shadow 0.2s;
    margin-bottom: 0;
    flex: 1;
    max-width: 800px;
    height: 55px;
}

.search-row .home-search-form:focus-within {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.search-row .home-search-input {
    flex: 1;
    border: none;
    background: none;
    font-size: 1.125rem;
    color: var(--text-primary);
    outline: none;
    width: 100%;
    min-width: 0;
}

.search-row .home-search-input::placeholder {
    color: var(--text-muted);
}

/* Search Icon Button */
.search-icon-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 55px;
    height: 55px;
    background: var(--primary-color);
    border: none;
    border-radius: var(--radius-lg);
    color: white;
    cursor: pointer;
    transition: background-color 0.2s;
    flex-shrink: 0;
}

.search-icon-btn:hover {
    background: var(--primary-hover);
}

/* Home Footer */
.home-footer {
    position: absolute;
    bottom: 1.5rem;
    left: 0;
    right: 0;
    text-align: center;
}

.home-footer p {
    font-size: 0.875rem;
    color: var(--text-muted);
    margin: 0;
}

/* ========================================
   404 Error Page
   ======================================== */
.error-page {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-color);
    margin: 0;
    padding: 2rem;
}

.error-content {
    text-align: center;
    max-width: 420px;
    width: 100%;
}

.error-logo {
    display: inline-block;
    margin-bottom: 1.5rem;
    opacity: 0.85;
    transition: opacity 0.2s;
}

.error-logo:hover {
    opacity: 1;
}

.error-code {
    font-size: 6rem;
    font-weight: 800;
    line-height: 1;
    color: var(--primary-color);
    margin: 0 0 0.5rem;
    letter-spacing: -0.02em;
}

.error-message {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-primary);
    margin: 0 0 0.5rem;
}

.error-hint {
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin: 0 0 1.75rem;
    line-height: 1.5;
}

.error-search {
    margin-bottom: 1.5rem;
}

.error-search-form {
    display: flex;
    align-items: center;
    gap: 0;
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 0.25rem 0.25rem 0.25rem 0.875rem;
    box-shadow: var(--shadow-sm);
    transition: border-color 0.2s, box-shadow 0.2s;
}

.error-search-form:focus-within {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.error-search-label {
    font-family: 'JetBrains Mono', 'Fira Code', monospace;
    font-size: 0.9rem;
    color: var(--text-muted);
    user-select: none;
    white-space: nowrap;
}

.error-search-input {
    flex: 1;
    border: none;
    outline: none;
    background: transparent;
    font-size: 0.9rem;
    padding: 0.5rem 0.5rem;
    color: var(--text-primary);
    min-width: 0;
}

.error-search-input::placeholder {
    color: var(--text-muted);
}

.error-search-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    border: none;
    border-radius: var(--radius);
    background: var(--primary-color);
    color: #fff;
    cursor: pointer;
    transition: background-color 0.2s;
    flex-shrink: 0;
}

.error-search-btn:hover {
    background: var(--primary-hover);
}

.error-home-link {
    display: inline-block;
    font-size: 0.875rem;
    color: var(--primary-color);
    text-decoration: none;
    transition: color 0.2s;
}

.error-home-link:hover {
    color: var(--primary-hover);
    text-decoration: underline;
}

/* Responsive */
@media (max-width: 480px) {
    .home-logo .logo-img {
        max-width: 220px;
    }

    .search-row {
        flex-wrap: wrap;
        gap: 0.5rem;
    }

    .search-label {
        font-size: 1rem;
    }

    .search-row .home-search-form {
        order: 2;
        width: 100%;
        max-width: none;
        height: 48px;
        border-radius: var(--radius);
    }

    .search-row .home-search-input {
        font-size: 1rem;
    }

    .search-icon-btn {
        order: 3;
        width: 48px;
        height: 48px;
        border-radius: var(--radius);
    }
}