/* ============================================================================
   IPv6 Domain Tester - Main Stylesheet
   Design inspired by Xaccel.net - Dark professional theme with gradient accents
   ============================================================================ */

/* ---------- CSS Variables / Theme ---------- */
:root {
    --ipv6dt-bg-primary: #0a0e1a;
    --ipv6dt-bg-secondary: #0f1629;
    --ipv6dt-bg-card: #141b2d;
    --ipv6dt-bg-card-hover: #1a2340;
    --ipv6dt-bg-input: #1a2340;
    --ipv6dt-bg-code: #0d1117;

    --ipv6dt-border: #1e2a45;
    --ipv6dt-border-light: #2a3a5c;

    --ipv6dt-text-primary: #e2e8f0;
    --ipv6dt-text-secondary: #94a3b8;
    --ipv6dt-text-muted: #64748b;
    --ipv6dt-text-white: #ffffff;

    --ipv6dt-accent-primary: #38bdf8;
    --ipv6dt-accent-secondary: #818cf8;
    --ipv6dt-accent-gradient: linear-gradient(135deg, #38bdf8 0%, #818cf8 100%);
    --ipv6dt-accent-gradient-hover: linear-gradient(135deg, #7dd3fc 0%, #a5b4fc 100%);

    --ipv6dt-success: #22c55e;
    --ipv6dt-success-bg: rgba(34, 197, 94, 0.1);
    --ipv6dt-success-border: rgba(34, 197, 94, 0.3);

    --ipv6dt-error: #ef4444;
    --ipv6dt-error-bg: rgba(239, 68, 68, 0.1);
    --ipv6dt-error-border: rgba(239, 68, 68, 0.3);

    --ipv6dt-warning: #f59e0b;
    --ipv6dt-warning-bg: rgba(245, 158, 11, 0.1);

    --ipv6dt-info: #38bdf8;
    --ipv6dt-info-bg: rgba(56, 189, 248, 0.1);

    --ipv6dt-radius-sm: 8px;
    --ipv6dt-radius-md: 12px;
    --ipv6dt-radius-lg: 16px;
    --ipv6dt-radius-xl: 24px;

    --ipv6dt-shadow-sm: 0 1px 3px rgba(0,0,0,0.3);
    --ipv6dt-shadow-md: 0 4px 16px rgba(0,0,0,0.4);
    --ipv6dt-shadow-lg: 0 8px 32px rgba(0,0,0,0.5);
    --ipv6dt-shadow-glow: 0 0 40px rgba(56,189,248,0.15);

    --ipv6dt-font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --ipv6dt-font-mono: 'JetBrains Mono', 'Fira Code', 'Consolas', monospace;

    --ipv6dt-transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Light Theme Override */
.ipv6dt-theme-light {
    --ipv6dt-bg-primary: #f8fafc;
    --ipv6dt-bg-secondary: #f1f5f9;
    --ipv6dt-bg-card: #ffffff;
    --ipv6dt-bg-card-hover: #f8fafc;
    --ipv6dt-bg-input: #ffffff;
    --ipv6dt-bg-code: #f1f5f9;
    --ipv6dt-border: #e2e8f0;
    --ipv6dt-border-light: #cbd5e1;
    --ipv6dt-text-primary: #1e293b;
    --ipv6dt-text-secondary: #475569;
    --ipv6dt-text-muted: #94a3b8;
    --ipv6dt-text-white: #0f172a;
    --ipv6dt-accent-primary: #0284c7;
    --ipv6dt-accent-secondary: #6366f1;
    --ipv6dt-accent-gradient: linear-gradient(135deg, #0284c7 0%, #6366f1 100%);
    --ipv6dt-accent-gradient-hover: linear-gradient(135deg, #0ea5e9 0%, #818cf8 100%);
    --ipv6dt-success: #16a34a;
    --ipv6dt-success-bg: rgba(22, 163, 74, 0.08);
    --ipv6dt-success-border: rgba(22, 163, 74, 0.25);
    --ipv6dt-error: #dc2626;
    --ipv6dt-error-bg: rgba(220, 38, 38, 0.06);
    --ipv6dt-error-border: rgba(220, 38, 38, 0.2);
    --ipv6dt-warning: #d97706;
    --ipv6dt-warning-bg: rgba(217, 119, 6, 0.08);
    --ipv6dt-info-bg: rgba(2, 132, 199, 0.06);
    --ipv6dt-shadow-sm: 0 1px 3px rgba(0,0,0,0.06), 0 1px 2px rgba(0,0,0,0.04);
    --ipv6dt-shadow-md: 0 4px 16px rgba(0,0,0,0.08), 0 2px 4px rgba(0,0,0,0.04);
    --ipv6dt-shadow-lg: 0 8px 32px rgba(0,0,0,0.1), 0 4px 8px rgba(0,0,0,0.04);
    --ipv6dt-shadow-glow: 0 0 30px rgba(2,132,199,0.1);
}

/* Light theme hero adjustments */
.ipv6dt-theme-light .ipv6dt-hero-bg {
    background:
        radial-gradient(ellipse at 20% 50%, rgba(2,132,199,0.06) 0%, transparent 60%),
        radial-gradient(ellipse at 80% 50%, rgba(99,102,241,0.06) 0%, transparent 60%),
        radial-gradient(ellipse at 50% 0%, rgba(2,132,199,0.04) 0%, transparent 50%);
}

/* Light theme input border */
.ipv6dt-theme-light .ipv6dt-input-group {
    border-color: #cbd5e1;
    box-shadow: 0 1px 3px rgba(0,0,0,0.06);
}

.ipv6dt-theme-light .ipv6dt-input-group:focus-within {
    border-color: #0284c7;
    box-shadow: 0 0 0 3px rgba(2,132,199,0.12);
}

/* Light theme button primary */
.ipv6dt-theme-light .ipv6dt-btn-primary {
    color: #ffffff;
    box-shadow: 0 4px 12px rgba(2,132,199,0.25);
}

.ipv6dt-theme-light .ipv6dt-btn-primary:hover {
    box-shadow: 0 6px 16px rgba(2,132,199,0.35);
}

/* Light theme score card */
.ipv6dt-theme-light .ipv6dt-score-card {
    box-shadow: 0 2px 12px rgba(0,0,0,0.06);
}

/* Light theme stat cards */
.ipv6dt-theme-light .ipv6dt-stat-card {
    box-shadow: 0 1px 4px rgba(0,0,0,0.04);
}

.ipv6dt-theme-light .ipv6dt-stat-card:hover {
    box-shadow: 0 4px 16px rgba(0,0,0,0.08);
}

/* Light theme test items */
.ipv6dt-theme-light .ipv6dt-test-item {
    box-shadow: 0 1px 3px rgba(0,0,0,0.04);
}

.ipv6dt-theme-light .ipv6dt-test-header:hover {
    background: #f8fafc;
}

/* Light theme test details code block */
.ipv6dt-theme-light .ipv6dt-test-details-content {
    background: #f8fafc;
    border: 1px solid #e2e8f0;
}

/* Light theme info cards */
.ipv6dt-theme-light .ipv6dt-info-card {
    box-shadow: 0 1px 4px rgba(0,0,0,0.04);
}

.ipv6dt-theme-light .ipv6dt-info-card:hover {
    box-shadow: 0 6px 20px rgba(0,0,0,0.08);
}

/* Light theme info icon backgrounds */
.ipv6dt-theme-light .ipv6dt-info-icon,
.ipv6dt-theme-light .ipv6dt-test-icon {
    background: rgba(2,132,199,0.08);
}

/* Light theme screenshot wrapper */
.ipv6dt-theme-light .ipv6dt-screenshot-wrapper {
    box-shadow: 0 2px 12px rgba(0,0,0,0.08);
}

.ipv6dt-theme-light .ipv6dt-browser-chrome {
    background: #f1f5f9;
}

.ipv6dt-theme-light .ipv6dt-browser-url {
    background: #ffffff;
    border: 1px solid #e2e8f0;
}

/* Light theme compare table */
.ipv6dt-theme-light .ipv6dt-compare-table {
    box-shadow: 0 1px 4px rgba(0,0,0,0.04);
}

.ipv6dt-theme-light .ipv6dt-compare-table th {
    background: #f1f5f9;
}

/* Light theme toast */
.ipv6dt-theme-light .ipv6dt-toast {
    box-shadow: 0 8px 24px rgba(0,0,0,0.12);
}

/* Light theme history items */
.ipv6dt-theme-light .ipv6dt-history-item {
    box-shadow: 0 1px 3px rgba(0,0,0,0.04);
}

.ipv6dt-theme-light .ipv6dt-history-item:hover {
    box-shadow: 0 4px 12px rgba(0,0,0,0.08);
}

/* ---------- Base Wrapper ---------- */
.ipv6dt-wrapper {
    font-family: var(--ipv6dt-font-sans);
    color: var(--ipv6dt-text-primary);
    background: var(--ipv6dt-bg-primary);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    max-width: 1200px;
    margin: 0 auto;
    border-radius: var(--ipv6dt-radius-xl);
    overflow: hidden;
    box-shadow: var(--ipv6dt-shadow-lg);
}

.ipv6dt-wrapper *, .ipv6dt-wrapper *::before, .ipv6dt-wrapper *::after {
    box-sizing: border-box;
}

/* ---------- Hero Section ---------- */
.ipv6dt-hero {
    position: relative;
    padding: 60px 40px 50px;
    text-align: center;
    overflow: hidden;
}

.ipv6dt-hero-bg {
    position: absolute;
    inset: 0;
    background:
        radial-gradient(ellipse at 20% 50%, rgba(56,189,248,0.12) 0%, transparent 60%),
        radial-gradient(ellipse at 80% 50%, rgba(129,140,248,0.12) 0%, transparent 60%),
        radial-gradient(ellipse at 50% 0%, rgba(56,189,248,0.06) 0%, transparent 50%);
    z-index: 0;
}

.ipv6dt-hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: var(--ipv6dt-accent-gradient);
    opacity: 0.6;
}

.ipv6dt-hero-content {
    position: relative;
    z-index: 1;
}

.ipv6dt-hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 6px 16px;
    background: rgba(56,189,248,0.1);
    border: 1px solid rgba(56,189,248,0.2);
    border-radius: 50px;
    font-size: 13px;
    font-weight: 500;
    color: var(--ipv6dt-accent-primary);
    margin-bottom: 20px;
    letter-spacing: 0.5px;
    text-transform: uppercase;
}

.ipv6dt-hero-title {
    font-size: clamp(28px, 4vw, 42px);
    font-weight: 800;
    line-height: 1.2;
    margin: 0 0 12px;
    background: var(--ipv6dt-accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.ipv6dt-hero-subtitle {
    font-size: clamp(15px, 2vw, 18px);
    color: var(--ipv6dt-text-secondary);
    margin: 0 0 32px;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

/* ---------- Search Form ---------- */
.ipv6dt-search-wrapper {
    max-width: 680px;
    margin: 0 auto;
}

.ipv6dt-input-group {
    display: flex;
    align-items: center;
    background: var(--ipv6dt-bg-input);
    border: 2px solid var(--ipv6dt-border);
    border-radius: var(--ipv6dt-radius-lg);
    padding: 6px 6px 6px 0;
    transition: var(--ipv6dt-transition);
    box-shadow: var(--ipv6dt-shadow-md);
}

.ipv6dt-input-group:focus-within {
    border-color: var(--ipv6dt-accent-primary);
    box-shadow: var(--ipv6dt-shadow-glow);
}

.ipv6dt-input-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 52px;
    min-width: 52px;
    color: var(--ipv6dt-text-muted);
    font-size: 18px;
}

.ipv6dt-input {
    flex: 1;
    background: transparent;
    border: none;
    outline: none;
    font-size: 16px;
    font-family: var(--ipv6dt-font-sans);
    color: var(--ipv6dt-text-primary);
    padding: 14px 12px;
    min-width: 0;
}

.ipv6dt-input::placeholder {
    color: var(--ipv6dt-text-muted);
}

/* ---------- Buttons ---------- */
.ipv6dt-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    font-family: var(--ipv6dt-font-sans);
    font-weight: 600;
    font-size: 14px;
    cursor: pointer;
    border: none;
    border-radius: var(--ipv6dt-radius-sm);
    padding: 12px 24px;
    transition: var(--ipv6dt-transition);
    white-space: nowrap;
    text-decoration: none;
}

.ipv6dt-btn-primary {
    background: var(--ipv6dt-accent-gradient);
    color: #0f172a;
    font-weight: 700;
    border-radius: var(--ipv6dt-radius-md);
    padding: 14px 28px;
    box-shadow: 0 4px 15px rgba(56,189,248,0.3);
}

.ipv6dt-btn-primary:hover {
    background: var(--ipv6dt-accent-gradient-hover);
    transform: translateY(-1px);
    box-shadow: 0 6px 20px rgba(56,189,248,0.4);
}

.ipv6dt-btn-primary:active {
    transform: translateY(0);
}

.ipv6dt-btn-outline {
    background: transparent;
    border: 1px solid var(--ipv6dt-border-light);
    color: var(--ipv6dt-text-secondary);
    padding: 10px 18px;
    font-size: 13px;
}

.ipv6dt-btn-outline:hover {
    border-color: var(--ipv6dt-accent-primary);
    color: var(--ipv6dt-accent-primary);
    background: rgba(56,189,248,0.05);
}

.ipv6dt-btn-sm {
    padding: 8px 14px;
    font-size: 12px;
    font-weight: 500;
    background: var(--ipv6dt-bg-card);
    color: var(--ipv6dt-text-secondary);
    border: 1px solid var(--ipv6dt-border);
}

.ipv6dt-btn-sm:hover {
    border-color: var(--ipv6dt-accent-primary);
    color: var(--ipv6dt-accent-primary);
}

/* ---------- Search Hints ---------- */
.ipv6dt-search-hints {
    display: flex;
    justify-content: center;
    gap: 20px;
    margin-top: 16px;
    flex-wrap: wrap;
}

.ipv6dt-search-hints span {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 13px;
    color: var(--ipv6dt-text-muted);
}

.ipv6dt-search-hints i {
    color: var(--ipv6dt-success);
    font-size: 11px;
}

/* ---------- Progress Section ---------- */
.ipv6dt-progress-section {
    padding: 20px 40px 30px;
}

.ipv6dt-progress-bar-wrapper {
    max-width: 680px;
    margin: 0 auto;
}

.ipv6dt-progress-bar {
    height: 6px;
    background: var(--ipv6dt-bg-card);
    border-radius: 3px;
    overflow: hidden;
    margin-bottom: 8px;
}

.ipv6dt-progress-fill {
    height: 100%;
    background: var(--ipv6dt-accent-gradient);
    border-radius: 3px;
    transition: width 0.4s ease;
    position: relative;
}

.ipv6dt-progress-fill::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
    animation: ipv6dt-shimmer 1.5s infinite;
}

@keyframes ipv6dt-shimmer {
    0% { transform: translateX(-100%); }
    100% { transform: translateX(100%); }
}

.ipv6dt-progress-text {
    font-size: 13px;
    color: var(--ipv6dt-text-muted);
    text-align: center;
}

/* ---------- Results Section ---------- */
.ipv6dt-results-section {
    padding: 0 40px 40px;
}

/* ---------- Score Overview ---------- */
.ipv6dt-score-overview {
    margin-bottom: 32px;
}

.ipv6dt-score-card {
    display: grid;
    grid-template-columns: 140px 1fr auto;
    align-items: center;
    gap: 28px;
    background: var(--ipv6dt-bg-card);
    border: 1px solid var(--ipv6dt-border);
    border-radius: var(--ipv6dt-radius-lg);
    padding: 28px 32px;
    box-shadow: var(--ipv6dt-shadow-md);
}

.ipv6dt-score-visual {
    position: relative;
    width: 140px;
    height: 140px;
    min-width: 140px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.ipv6dt-score-visual canvas {
    position: absolute;
    top: 0;
    left: 0;
    width: 140px !important;
    height: 140px !important;
}

.ipv6dt-score-number {
    position: relative;
    z-index: 1;
    text-align: center;
}

.ipv6dt-score-number span:first-child {
    font-size: 40px;
    font-weight: 800;
    line-height: 1;
    background: var(--ipv6dt-accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.ipv6dt-score-divider {
    font-size: 24px;
    color: var(--ipv6dt-text-muted);
    font-weight: 300;
    margin: 0 2px;
}

.ipv6dt-score-number span:last-child {
    font-size: 24px;
    font-weight: 600;
    color: var(--ipv6dt-text-muted);
}

.ipv6dt-score-info {
    min-width: 0;
    overflow: hidden;
}

.ipv6dt-score-domain {
    font-size: 22px;
    font-weight: 700;
    color: var(--ipv6dt-text-white);
    margin: 0 0 6px;
    word-break: break-word;
    overflow-wrap: break-word;
}

.ipv6dt-score-label {
    font-size: 15px;
    font-weight: 600;
    margin: 0 0 4px;
}

.ipv6dt-score-label.score-excellent { color: var(--ipv6dt-success); }
.ipv6dt-score-label.score-good { color: #22d3ee; }
.ipv6dt-score-label.score-moderate { color: var(--ipv6dt-warning); }
.ipv6dt-score-label.score-poor { color: var(--ipv6dt-error); }

.ipv6dt-score-time {
    font-size: 13px;
    color: var(--ipv6dt-text-muted);
    margin: 0;
}

.ipv6dt-score-cached {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    margin-top: 8px;
    padding: 4px 12px;
    background: var(--ipv6dt-info-bg);
    border-radius: 50px;
    font-size: 12px;
    color: var(--ipv6dt-accent-primary);
}

.ipv6dt-score-actions {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

/* ---------- Quick Stats ---------- */
.ipv6dt-quick-stats {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
    margin-top: 20px;
}

.ipv6dt-stat-card {
    background: var(--ipv6dt-bg-card);
    border: 1px solid var(--ipv6dt-border);
    border-radius: var(--ipv6dt-radius-md);
    padding: 20px;
    text-align: center;
    transition: var(--ipv6dt-transition);
}

.ipv6dt-stat-card:hover {
    border-color: var(--ipv6dt-accent-primary);
    transform: translateY(-2px);
    box-shadow: var(--ipv6dt-shadow-md);
}

.ipv6dt-stat-icon {
    font-size: 24px;
    margin-bottom: 8px;
    color: var(--ipv6dt-accent-primary);
}

.ipv6dt-stat-label {
    font-size: 12px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--ipv6dt-text-muted);
    margin-bottom: 6px;
}

.ipv6dt-stat-value {
    font-size: 20px;
    font-weight: 800;
}

.ipv6dt-stat-value.stat-pass { color: var(--ipv6dt-success); }
.ipv6dt-stat-value.stat-fail { color: var(--ipv6dt-error); }
.ipv6dt-stat-value.stat-partial { color: var(--ipv6dt-warning); }

/* ---------- Test Results Grid ---------- */
.ipv6dt-results-grid {
    margin-bottom: 32px;
}

.ipv6dt-results-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 16px;
    flex-wrap: wrap;
    gap: 12px;
}

.ipv6dt-results-header h3 {
    font-size: 18px;
    font-weight: 700;
    color: var(--ipv6dt-text-white);
    margin: 0;
    display: flex;
    align-items: center;
    gap: 10px;
}

.ipv6dt-results-header h3 i {
    color: var(--ipv6dt-accent-primary);
}

.ipv6dt-results-toggle {
    display: flex;
    gap: 8px;
}

/* ---------- Individual Test Result ---------- */
.ipv6dt-test-item {
    background: var(--ipv6dt-bg-card);
    border: 1px solid var(--ipv6dt-border);
    border-radius: var(--ipv6dt-radius-md);
    margin-bottom: 10px;
    overflow: hidden;
    transition: var(--ipv6dt-transition);
}

.ipv6dt-test-item:hover {
    border-color: var(--ipv6dt-border-light);
}

.ipv6dt-test-item.test-pass {
    border-left: 3px solid var(--ipv6dt-success);
}

.ipv6dt-test-item.test-fail {
    border-left: 3px solid var(--ipv6dt-error);
}

.ipv6dt-test-header {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 16px 20px;
    cursor: pointer;
    user-select: none;
    transition: var(--ipv6dt-transition);
}

.ipv6dt-test-header:hover {
    background: var(--ipv6dt-bg-card-hover);
}

.ipv6dt-test-status {
    width: 32px;
    height: 32px;
    min-width: 32px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 14px;
}

.test-pass .ipv6dt-test-status {
    background: var(--ipv6dt-success-bg);
    color: var(--ipv6dt-success);
    border: 1px solid var(--ipv6dt-success-border);
}

.test-fail .ipv6dt-test-status {
    background: var(--ipv6dt-error-bg);
    color: var(--ipv6dt-error);
    border: 1px solid var(--ipv6dt-error-border);
}

.ipv6dt-test-icon {
    width: 36px;
    height: 36px;
    min-width: 36px;
    border-radius: var(--ipv6dt-radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 16px;
    background: rgba(56,189,248,0.08);
    color: var(--ipv6dt-accent-primary);
}

.ipv6dt-test-info {
    flex: 1;
    min-width: 0;
}

.ipv6dt-test-label {
    font-size: 14px;
    font-weight: 600;
    color: var(--ipv6dt-text-primary);
    margin: 0 0 2px;
}

.ipv6dt-test-summary {
    font-size: 13px;
    color: var(--ipv6dt-text-secondary);
    margin: 0;
}

.ipv6dt-test-chevron {
    font-size: 14px;
    color: var(--ipv6dt-text-muted);
    transition: transform 0.3s ease;
    margin-left: auto;
}

.ipv6dt-test-item.is-expanded .ipv6dt-test-chevron {
    transform: rotate(180deg);
}

.ipv6dt-test-details {
    display: none;
    padding: 0 20px 16px;
    border-top: 1px solid var(--ipv6dt-border);
}

.ipv6dt-test-item.is-expanded .ipv6dt-test-details {
    display: block;
}

.ipv6dt-test-details-content {
    background: var(--ipv6dt-bg-code);
    border-radius: var(--ipv6dt-radius-sm);
    padding: 16px;
    margin-top: 12px;
    font-family: var(--ipv6dt-font-mono);
    font-size: 12.5px;
    line-height: 1.8;
    color: var(--ipv6dt-text-secondary);
    overflow-x: auto;
    white-space: pre-wrap;
    word-break: break-all;
}

.ipv6dt-test-details-content .detail-line {
    display: block;
    padding: 1px 0;
}

.ipv6dt-test-details-content .detail-line.detail-ipv6 {
    color: var(--ipv6dt-accent-primary);
}

.ipv6dt-test-details-content .detail-line.detail-ipv4 {
    color: var(--ipv6dt-text-muted);
}

.ipv6dt-test-details-content .detail-line.detail-success {
    color: var(--ipv6dt-success);
}

.ipv6dt-test-details-content .detail-line.detail-fail {
    color: var(--ipv6dt-error);
}

/* ---------- Website Screenshot ---------- */
.ipv6dt-screenshot-section {
    margin-bottom: 32px;
}

.ipv6dt-screenshot-header {
    margin-bottom: 16px;
}

.ipv6dt-screenshot-header h3 {
    font-size: 18px;
    font-weight: 700;
    color: var(--ipv6dt-text-white);
    margin: 0;
    display: flex;
    align-items: center;
    gap: 10px;
}

.ipv6dt-screenshot-header h3 i {
    color: var(--ipv6dt-accent-primary);
}

.ipv6dt-screenshot-wrapper {
    background: var(--ipv6dt-bg-card);
    border: 1px solid var(--ipv6dt-border);
    border-radius: var(--ipv6dt-radius-lg);
    overflow: hidden;
    box-shadow: var(--ipv6dt-shadow-md);
}

.ipv6dt-browser-chrome {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    background: var(--ipv6dt-bg-secondary);
    border-bottom: 1px solid var(--ipv6dt-border);
}

.ipv6dt-browser-dots {
    display: flex;
    gap: 6px;
}

.ipv6dt-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
}

.ipv6dt-dot-red { background: #ef4444; }
.ipv6dt-dot-yellow { background: #f59e0b; }
.ipv6dt-dot-green { background: #22c55e; }

.ipv6dt-browser-url {
    flex: 1;
    display: flex;
    align-items: center;
    gap: 8px;
    background: var(--ipv6dt-bg-input);
    border-radius: 6px;
    padding: 6px 12px;
    font-size: 13px;
    color: var(--ipv6dt-text-secondary);
    font-family: var(--ipv6dt-font-sans);
}

.ipv6dt-browser-url i {
    color: var(--ipv6dt-success);
    font-size: 12px;
}

.ipv6dt-screenshot-container {
    position: relative;
    min-height: 300px;
    background: var(--ipv6dt-bg-primary);
}

.ipv6dt-screenshot-container img {
    width: 100%;
    height: auto;
    display: block;
}

.ipv6dt-screenshot-loading {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 12px;
    background: var(--ipv6dt-bg-card);
    color: var(--ipv6dt-text-muted);
    font-size: 14px;
}

.ipv6dt-screenshot-loading i {
    font-size: 32px;
    color: var(--ipv6dt-accent-primary);
}

/* ---------- Recommendations ---------- */
.ipv6dt-recommendations-section {
    margin-bottom: 32px;
}

.ipv6dt-recommendations-section h3 {
    font-size: 18px;
    font-weight: 700;
    color: var(--ipv6dt-text-white);
    margin: 0 0 16px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.ipv6dt-recommendations-section h3 i {
    color: var(--ipv6dt-warning);
}

.ipv6dt-recommendation-item {
    display: flex;
    gap: 14px;
    padding: 16px 20px;
    background: var(--ipv6dt-bg-card);
    border: 1px solid var(--ipv6dt-border);
    border-radius: var(--ipv6dt-radius-md);
    margin-bottom: 10px;
    border-left: 3px solid var(--ipv6dt-warning);
}

.ipv6dt-recommendation-icon {
    width: 36px;
    height: 36px;
    min-width: 36px;
    border-radius: var(--ipv6dt-radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 16px;
    background: var(--ipv6dt-warning-bg);
    color: var(--ipv6dt-warning);
}

.ipv6dt-recommendation-text h4 {
    font-size: 14px;
    font-weight: 600;
    color: var(--ipv6dt-text-primary);
    margin: 0 0 4px;
}

.ipv6dt-recommendation-text p {
    font-size: 13px;
    color: var(--ipv6dt-text-secondary);
    margin: 0;
    line-height: 1.6;
}

/* ---------- Compare Section ---------- */
.ipv6dt-compare-section {
    padding: 32px 40px;
    border-top: 1px solid var(--ipv6dt-border);
}

.ipv6dt-compare-header {
    margin-bottom: 20px;
}

.ipv6dt-compare-header h3 {
    font-size: 18px;
    font-weight: 700;
    color: var(--ipv6dt-text-white);
    margin: 0 0 6px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.ipv6dt-compare-header h3 i {
    color: var(--ipv6dt-accent-secondary);
}

.ipv6dt-compare-header p {
    color: var(--ipv6dt-text-secondary);
    font-size: 14px;
    margin: 0;
}

.ipv6dt-compare-form {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.ipv6dt-compare-inputs {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}

.ipv6dt-compare-input {
    flex: 1;
    min-width: 180px;
    padding: 10px 14px;
    background: var(--ipv6dt-bg-input);
    border: 1px solid var(--ipv6dt-border);
    border-radius: var(--ipv6dt-radius-sm);
    color: var(--ipv6dt-text-primary);
    font-family: var(--ipv6dt-font-sans);
    font-size: 14px;
    outline: none;
    transition: var(--ipv6dt-transition);
}

.ipv6dt-compare-input:focus {
    border-color: var(--ipv6dt-accent-primary);
}

.ipv6dt-compare-input::placeholder {
    color: var(--ipv6dt-text-muted);
}

.ipv6dt-compare-actions {
    display: flex;
    gap: 10px;
}

/* Compare Results Table */
.ipv6dt-compare-table-wrapper {
    overflow-x: auto;
    margin-top: 20px;
}

.ipv6dt-compare-table {
    width: 100%;
    border-collapse: separate;
    border-spacing: 0;
    background: var(--ipv6dt-bg-card);
    border: 1px solid var(--ipv6dt-border);
    border-radius: var(--ipv6dt-radius-md);
    overflow: hidden;
}

.ipv6dt-compare-table th,
.ipv6dt-compare-table td {
    padding: 12px 16px;
    text-align: center;
    border-bottom: 1px solid var(--ipv6dt-border);
    font-size: 13px;
}

.ipv6dt-compare-table th {
    background: var(--ipv6dt-bg-secondary);
    font-weight: 700;
    color: var(--ipv6dt-text-white);
    font-size: 14px;
}

.ipv6dt-compare-table th:first-child,
.ipv6dt-compare-table td:first-child {
    text-align: left;
    font-weight: 600;
}

.ipv6dt-compare-table tr:last-child td {
    border-bottom: none;
}

.ipv6dt-compare-table .score-cell {
    font-size: 20px;
    font-weight: 800;
}

/* ---------- History Section ---------- */
.ipv6dt-history-section {
    padding: 32px 40px;
    border-top: 1px solid var(--ipv6dt-border);
}

.ipv6dt-history-header h3 {
    font-size: 18px;
    font-weight: 700;
    color: var(--ipv6dt-text-white);
    margin: 0 0 16px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.ipv6dt-history-header h3 i {
    color: var(--ipv6dt-accent-primary);
}

.ipv6dt-history-list {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 12px;
}

.ipv6dt-history-empty {
    color: var(--ipv6dt-text-muted);
    font-size: 14px;
    grid-column: 1 / -1;
    text-align: center;
    padding: 30px;
}

.ipv6dt-history-item {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 14px 18px;
    background: var(--ipv6dt-bg-card);
    border: 1px solid var(--ipv6dt-border);
    border-radius: var(--ipv6dt-radius-md);
    cursor: pointer;
    transition: var(--ipv6dt-transition);
}

.ipv6dt-history-item:hover {
    border-color: var(--ipv6dt-accent-primary);
    transform: translateY(-1px);
    box-shadow: var(--ipv6dt-shadow-sm);
}

.ipv6dt-history-score {
    width: 44px;
    height: 44px;
    min-width: 44px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 16px;
    font-weight: 800;
}

.ipv6dt-history-score.score-high {
    background: var(--ipv6dt-success-bg);
    color: var(--ipv6dt-success);
    border: 2px solid var(--ipv6dt-success-border);
}

.ipv6dt-history-score.score-mid {
    background: var(--ipv6dt-warning-bg);
    color: var(--ipv6dt-warning);
    border: 2px solid rgba(245, 158, 11, 0.3);
}

.ipv6dt-history-score.score-low {
    background: var(--ipv6dt-error-bg);
    color: var(--ipv6dt-error);
    border: 2px solid var(--ipv6dt-error-border);
}

.ipv6dt-history-info {
    flex: 1;
    min-width: 0;
}

.ipv6dt-history-domain {
    font-size: 14px;
    font-weight: 600;
    color: var(--ipv6dt-text-primary);
    margin: 0;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.ipv6dt-history-time {
    font-size: 12px;
    color: var(--ipv6dt-text-muted);
    margin: 0;
}

.ipv6dt-history-grade {
    font-size: 18px;
    font-weight: 800;
    color: var(--ipv6dt-accent-primary);
}

/* ---------- Info Footer ---------- */
.ipv6dt-info-footer {
    padding: 40px;
    border-top: 1px solid var(--ipv6dt-border);
    background: var(--ipv6dt-bg-secondary);
}

.ipv6dt-info-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 20px;
    margin-bottom: 32px;
}

.ipv6dt-info-card {
    padding: 24px;
    background: var(--ipv6dt-bg-card);
    border: 1px solid var(--ipv6dt-border);
    border-radius: var(--ipv6dt-radius-md);
    text-align: center;
    transition: var(--ipv6dt-transition);
}

.ipv6dt-info-card:hover {
    border-color: var(--ipv6dt-accent-primary);
    transform: translateY(-3px);
    box-shadow: var(--ipv6dt-shadow-md);
}

.ipv6dt-info-icon {
    width: 48px;
    height: 48px;
    margin: 0 auto 14px;
    border-radius: var(--ipv6dt-radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 22px;
    background: rgba(56,189,248,0.1);
    color: var(--ipv6dt-accent-primary);
}

.ipv6dt-info-card h4 {
    font-size: 15px;
    font-weight: 700;
    color: var(--ipv6dt-text-white);
    margin: 0 0 8px;
}

.ipv6dt-info-card p {
    font-size: 13px;
    color: var(--ipv6dt-text-secondary);
    margin: 0;
    line-height: 1.6;
}

.ipv6dt-powered-by {
    text-align: center;
    padding-top: 24px;
    border-top: 1px solid var(--ipv6dt-border);
}

.ipv6dt-powered-by p {
    font-size: 13px;
    color: var(--ipv6dt-text-muted);
    margin: 0;
}

.ipv6dt-powered-by a {
    color: var(--ipv6dt-accent-primary);
    text-decoration: none;
    font-weight: 600;
}

.ipv6dt-powered-by a:hover {
    text-decoration: underline;
}

/* ---------- Toast Notification ---------- */
.ipv6dt-toast {
    position: fixed;
    bottom: 30px;
    right: 30px;
    padding: 14px 24px;
    background: var(--ipv6dt-bg-card);
    border: 1px solid var(--ipv6dt-border);
    border-radius: var(--ipv6dt-radius-md);
    box-shadow: var(--ipv6dt-shadow-lg);
    color: var(--ipv6dt-text-primary);
    font-size: 14px;
    font-family: var(--ipv6dt-font-sans);
    z-index: 99999;
    display: flex;
    align-items: center;
    gap: 10px;
    animation: ipv6dt-toast-in 0.3s ease;
}

.ipv6dt-toast.toast-success {
    border-left: 3px solid var(--ipv6dt-success);
}

.ipv6dt-toast.toast-error {
    border-left: 3px solid var(--ipv6dt-error);
}

.ipv6dt-toast.toast-info {
    border-left: 3px solid var(--ipv6dt-accent-primary);
}

@keyframes ipv6dt-toast-in {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

/* ---------- Error Message ---------- */
.ipv6dt-error-message {
    text-align: center;
    padding: 32px;
    background: var(--ipv6dt-error-bg);
    border: 1px solid var(--ipv6dt-error-border);
    border-radius: var(--ipv6dt-radius-md);
    margin: 20px 40px;
}

.ipv6dt-error-message i {
    font-size: 36px;
    color: var(--ipv6dt-error);
    margin-bottom: 12px;
}

.ipv6dt-error-message h3 {
    color: var(--ipv6dt-error);
    margin: 0 0 8px;
    font-size: 18px;
}

.ipv6dt-error-message p {
    color: var(--ipv6dt-text-secondary);
    margin: 0;
    font-size: 14px;
}

/* ---------- Responsive Design ---------- */
@media (max-width: 768px) {
    .ipv6dt-hero {
        padding: 40px 20px 32px;
    }

    .ipv6dt-input-group {
        flex-direction: column;
        padding: 0;
        border-radius: var(--ipv6dt-radius-md);
    }

    .ipv6dt-input-icon {
        display: none;
    }

    .ipv6dt-input {
        padding: 16px;
        text-align: center;
        border-bottom: 1px solid var(--ipv6dt-border);
    }

    .ipv6dt-btn-primary {
        width: 100%;
        border-radius: 0 0 10px 10px;
    }

    .ipv6dt-results-section,
    .ipv6dt-compare-section,
    .ipv6dt-history-section,
    .ipv6dt-info-footer {
        padding-left: 20px;
        padding-right: 20px;
    }

    .ipv6dt-score-card {
        grid-template-columns: 1fr;
        text-align: center;
        justify-items: center;
        padding: 24px;
    }

    .ipv6dt-score-info {
        width: 100%;
    }

    .ipv6dt-score-actions {
        flex-direction: row;
        justify-content: center;
        flex-wrap: wrap;
    }

    .ipv6dt-quick-stats {
        grid-template-columns: repeat(2, 1fr);
    }

    .ipv6dt-test-header {
        padding: 14px 16px;
    }

    .ipv6dt-test-icon {
        display: none;
    }

    .ipv6dt-search-hints {
        flex-direction: column;
        align-items: center;
        gap: 8px;
    }

    .ipv6dt-compare-inputs {
        flex-direction: column;
    }

    .ipv6dt-history-list {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .ipv6dt-quick-stats {
        grid-template-columns: 1fr 1fr;
        gap: 10px;
    }

    .ipv6dt-stat-card {
        padding: 14px;
    }

    .ipv6dt-score-visual {
        width: 130px;
        height: 130px;
        min-width: 130px;
    }

    .ipv6dt-score-number span:first-child {
        font-size: 40px;
    }

    .ipv6dt-info-cards {
        grid-template-columns: 1fr;
    }
}

/* ---------- Print Styles ---------- */
@media print {
    .ipv6dt-wrapper {
        box-shadow: none;
        border-radius: 0;
    }

    .ipv6dt-hero-bg,
    .ipv6dt-search-wrapper,
    .ipv6dt-progress-section,
    .ipv6dt-compare-section,
    .ipv6dt-history-section,
    .ipv6dt-score-actions,
    .ipv6dt-results-toggle,
    .ipv6dt-btn {
        display: none !important;
    }

    .ipv6dt-test-details {
        display: block !important;
    }

    .ipv6dt-test-item,
    .ipv6dt-score-card {
        break-inside: avoid;
    }
}