/* ============================================
   DNS Lookup Visual — Sunset Glow Theme
   ============================================ */

:root {
    --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --primary: #F97316;
    --primary-rgb: 249, 115, 22;
    --secondary: #FB923C;
    --accent: #06B6D4;
    --accent-rgb: 6, 182, 212;

    /* Dark mode (default) */
    --bg: #1A1008;
    --bg-secondary: #231509;
    --bg-tertiary: #2D1C0E;
    --text: #FDF2E9;
    --text-secondary: #C4A882;
    --text-tertiary: #8B7355;
    --border: rgba(249, 115, 22, 0.12);
    --glass-bg: rgba(35, 21, 9, 0.8);
    --glass-border: rgba(249, 115, 22, 0.1);
    --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.4);
    --gradient: linear-gradient(135deg, #F97316, #FB923C, #F59E0B);
    --gradient-accent: linear-gradient(135deg, #06B6D4, #22D3EE);
    --radius: 12px;
    --transition: 250ms cubic-bezier(0.4, 0, 0.2, 1);

    /* Record type colors */
    --color-a: #F97316;
    --color-aaaa: #FB923C;
    --color-mx: #A855F7;
    --color-cname: #06B6D4;
    --color-ns: #22C55E;
    --color-txt: #EC4899;
}

[data-theme="light"] {
    --bg: #FFFBF5;
    --bg-secondary: #FFF7ED;
    --bg-tertiary: #FEF3E2;
    --text: #1A1008;
    --text-secondary: #6B5A42;
    --text-tertiary: #9C8868;
    --border: rgba(249, 115, 22, 0.15);
    --glass-bg: rgba(255, 251, 245, 0.85);
    --glass-border: rgba(249, 115, 22, 0.12);
    --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.1);
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font);
    background: var(--bg);
    color: var(--text);
    line-height: 1.6;
    min-height: 100vh;
    transition: background var(--transition), color var(--transition);
}

.container {
    max-width: 900px;
    margin: 0 auto;
    padding: 0 20px;
}

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

.icon {
    width: 18px;
    height: 18px;
    flex-shrink: 0;
}

.gradient-text {
    background: var(--gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.glass-card {
    background: var(--glass-bg);
    backdrop-filter: blur(16px);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius);
    box-shadow: var(--shadow-md);
}

/* Header */
.header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border);
}

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

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

.logo-icon {
    font-size: 24px;
}

.logo-text {
    font-size: 1.1rem;
    font-weight: 700;
    letter-spacing: -0.02em;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 18px;
    border: none;
    border-radius: 8px;
    font-family: var(--font);
    font-size: 0.875rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 150ms ease;
    white-space: nowrap;
}

.btn:focus-visible {
    outline: 2px solid var(--primary);
    outline-offset: 2px;
}

.btn-primary {
    background: var(--gradient);
    color: #fff;
    box-shadow: 0 4px 20px rgba(var(--primary-rgb), 0.3);
}

.btn-primary:hover {
    transform: translateY(-1px);
    box-shadow: 0 6px 28px rgba(var(--primary-rgb), 0.4);
}

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

.btn-ghost:hover {
    background: rgba(var(--primary-rgb), 0.08);
    color: var(--text);
}

.btn-sm {
    padding: 6px 12px;
    font-size: 0.8rem;
}

/* Theme toggle */
[data-theme="dark"] .sun-icon {
    display: block;
}

[data-theme="dark"] .moon-icon {
    display: none;
}

[data-theme="light"] .sun-icon {
    display: none;
}

[data-theme="light"] .moon-icon {
    display: block;
}

/* Hero */
.hero {
    text-align: center;
    padding: 48px 0 28px;
}

.hero-title {
    font-size: clamp(1.6rem, 5vw, 2.4rem);
    font-weight: 800;
    letter-spacing: -0.03em;
    line-height: 1.2;
    margin-bottom: 10px;
}

.hero-sub {
    font-size: 0.95rem;
    color: var(--text-secondary);
    max-width: 520px;
    margin: 0 auto;
}

/* Input section */
.input-section {
    padding: 20px;
    margin-bottom: 24px;
}

.input-row {
    display: flex;
    gap: 10px;
    margin-bottom: 14px;
}

.domain-input-wrap {
    flex: 1;
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 0 16px;
    background: var(--bg-tertiary);
    border-radius: 8px;
    border: 1px solid var(--border);
    transition: border-color var(--transition);
}

.domain-input-wrap:focus-within {
    border-color: var(--primary);
}

.input-icon {
    color: var(--text-tertiary);
}

.domain-input {
    flex: 1;
    border: none;
    background: transparent;
    color: var(--text);
    font-family: var(--font);
    font-size: 0.95rem;
    padding: 12px 0;
    outline: none;
}

.domain-input::placeholder {
    color: var(--text-tertiary);
}

/* Record toggles */
.record-toggles {
    display: flex;
    gap: 6px;
    flex-wrap: wrap;
    margin-bottom: 8px;
}

.toggle-chip {
    display: inline-flex;
    align-items: center;
    cursor: pointer;
    padding: 5px 14px;
    border-radius: 20px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border);
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--text-secondary);
    transition: all 150ms ease;
}

.toggle-chip input {
    display: none;
}

.toggle-chip.active {
    background: rgba(var(--primary-rgb), 0.15);
    color: var(--primary);
    border-color: rgba(var(--primary-rgb), 0.3);
}

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

/* Bulk */
.bulk-details {
    margin-top: 8px;
}

.bulk-summary {
    font-size: 0.82rem;
    font-weight: 500;
    color: var(--text-tertiary);
    cursor: pointer;
    padding: 4px 0;
}

.bulk-summary:hover {
    color: var(--text-secondary);
}

.bulk-content {
    margin-top: 8px;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.bulk-textarea {
    width: 100%;
    padding: 12px;
    border: 1px solid var(--border);
    border-radius: 8px;
    background: var(--bg-tertiary);
    color: var(--text);
    font-family: 'SF Mono', monospace;
    font-size: 0.82rem;
    resize: vertical;
    outline: none;
}

.bulk-textarea:focus {
    border-color: var(--primary);
}

/* Loading */
.loading {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    padding: 40px 0;
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.loader-ring {
    width: 28px;
    height: 28px;
    border: 3px solid var(--border);
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: spin 0.7s linear infinite;
}

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

/* Error */
.error-msg {
    padding: 16px 20px;
    margin-bottom: 20px;
    color: #EF4444;
    border-color: rgba(239, 68, 68, 0.2);
    font-size: 0.88rem;
}

/* Results */
.results {
    animation: fadeUp 0.4s ease;
}

@keyframes fadeUp {
    from {
        opacity: 0;
        transform: translateY(12px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.results-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 16px;
    flex-wrap: wrap;
    gap: 10px;
}

.results-title {
    font-size: 1.2rem;
    font-weight: 700;
}

.results-actions {
    display: flex;
    gap: 4px;
}

/* DNS Tree */
.dns-tree {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.tree-group {}

.tree-group-header {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 16px;
    cursor: pointer;
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    transition: all 150ms ease;
}

.tree-group-header:hover {
    border-color: var(--primary);
}

.tree-type-badge {
    display: inline-flex;
    padding: 2px 10px;
    border-radius: 20px;
    font-size: 0.72rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: #fff;
}

.tree-type-badge.A {
    background: var(--color-a);
}

.tree-type-badge.AAAA {
    background: var(--color-aaaa);
}

.tree-type-badge.MX {
    background: var(--color-mx);
}

.tree-type-badge.CNAME {
    background: var(--color-cname);
}

.tree-type-badge.NS {
    background: var(--color-ns);
}

.tree-type-badge.TXT {
    background: var(--color-txt);
}

.tree-group-count {
    font-size: 0.8rem;
    color: var(--text-tertiary);
    margin-left: auto;
}

.tree-chevron {
    width: 16px;
    height: 16px;
    color: var(--text-tertiary);
    transition: transform 200ms ease;
}

.tree-group.open .tree-chevron {
    transform: rotate(90deg);
}

.tree-records {
    padding: 0;
    max-height: 0;
    overflow: hidden;
    transition: max-height 300ms ease, padding 200ms ease;
}

.tree-group.open .tree-records {
    max-height: 600px;
    padding: 8px 0 0 32px;
}

.record-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 16px;
    margin-bottom: 6px;
    background: var(--bg-tertiary);
    border-radius: 8px;
    border-left: 3px solid var(--border);
    font-size: 0.85rem;
    transition: all 150ms ease;
    animation: fadeUp 0.3s ease forwards;
}

.record-item:hover {
    border-left-color: var(--primary);
}

.record-item[data-type="A"] {
    border-left-color: var(--color-a);
}

.record-item[data-type="AAAA"] {
    border-left-color: var(--color-aaaa);
}

.record-item[data-type="MX"] {
    border-left-color: var(--color-mx);
}

.record-item[data-type="CNAME"] {
    border-left-color: var(--color-cname);
}

.record-item[data-type="NS"] {
    border-left-color: var(--color-ns);
}

.record-item[data-type="TXT"] {
    border-left-color: var(--color-txt);
}

.record-value {
    flex: 1;
    font-family: 'SF Mono', 'Fira Code', monospace;
    font-size: 0.82rem;
    word-break: break-all;
}

.record-ttl {
    font-size: 0.72rem;
    color: var(--text-tertiary);
    background: var(--bg-secondary);
    padding: 2px 8px;
    border-radius: 4px;
    white-space: nowrap;
}

.record-copy {
    background: none;
    border: none;
    color: var(--text-tertiary);
    cursor: pointer;
    padding: 4px;
    border-radius: 4px;
    transition: color 150ms;
}

.record-copy:hover {
    color: var(--primary);
}

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

/* Resolvers */
.resolvers-section {
    margin-top: 24px;
    animation: fadeUp 0.5s ease;
}

.resolvers-title {
    font-size: 1rem;
    font-weight: 700;
    margin-bottom: 12px;
}

.resolvers-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    gap: 10px;
}

.resolver-card {
    padding: 14px 16px;
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    transition: all 150ms ease;
}

.resolver-card:hover {
    border-color: var(--primary);
}

.resolver-name {
    font-size: 0.82rem;
    font-weight: 600;
    margin-bottom: 6px;
}

.resolver-records {
    font-size: 0.78rem;
    color: var(--text-secondary);
    font-family: monospace;
}

.resolver-status {
    display: inline-flex;
    padding: 1px 8px;
    border-radius: 10px;
    font-size: 0.7rem;
    font-weight: 600;
    margin-bottom: 6px;
}

.resolver-status.ok {
    background: rgba(34, 197, 94, 0.15);
    color: #22C55E;
}

.resolver-status.err {
    background: rgba(239, 68, 68, 0.15);
    color: #EF4444;
}

/* Toast */
.toast-container {
    position: fixed;
    bottom: 24px;
    right: 24px;
    z-index: 2000;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.toast {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 18px;
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: 8px;
    box-shadow: var(--shadow-lg);
    font-size: 0.82rem;
    animation: slideIn 0.3s ease, fadeOut 0.3s ease 2.5s forwards;
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateX(30px);
    }

    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes fadeOut {
    to {
        opacity: 0;
        transform: translateY(8px);
    }
}

/* Footer */
.footer {
    margin-top: 56px;
    padding: 20px 0;
    border-top: 1px solid var(--border);
}

.footer-inner {
    text-align: center;
    font-size: 0.78rem;
    color: var(--text-tertiary);
}

/* Responsive */
@media (max-width: 600px) {
    .input-row {
        flex-direction: column;
    }

    .btn-primary {
        width: 100%;
        justify-content: center;
    }

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

    .resolvers-grid {
        grid-template-columns: 1fr;
    }

    .tree-group.open .tree-records {
        padding-left: 16px;
    }
}