@import url('https://fonts.googleapis.com/css2?family=Manrope:wght@400;500;600;700;800&family=Oxanium:wght@500;600;700&display=swap');

:root {
    --tool-bg: #07111f;
    --tool-bg-soft: #0b1728;
    --tool-panel: #101d2f;
    --tool-panel-strong: #13243a;
    --tool-border: rgba(169, 190, 225, 0.2);
    --tool-border-strong: rgba(115, 205, 255, 0.36);
    --tool-text: #edf5ff;
    --tool-text-soft: #b8c8dc;
    --tool-text-muted: #8799b1;
    --tool-blue: #2f7dff;
    --tool-cyan: #58d7ff;
    --tool-green: #47d7a6;
    --tool-yellow: #ffc857;
    --tool-red: #ff728f;
    --tool-purple: #b18cff;
    --tool-shadow: 0 24px 60px rgba(0, 0, 0, 0.28);
}

* {
    box-sizing: border-box;
}

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

body.utility-page {
    min-height: 100vh;
    margin: 0;
    color: var(--tool-text);
    background:
        linear-gradient(180deg, #06101d 0%, var(--tool-bg) 46%, #0a1423 100%);
    font-family: 'Manrope', Arial, sans-serif;
}

.utility-page h1,
.utility-page h2,
.utility-page h3 {
    color: var(--tool-text);
    font-family: 'Oxanium', Arial, sans-serif;
    letter-spacing: 0;
}

.utility-page p,
.utility-page li,
.utility-page label,
.utility-page small {
    color: var(--tool-text-soft);
}

.utility-page a {
    color: var(--tool-cyan);
    text-decoration: none;
}

.utility-page a:hover {
    color: #ffffff;
}

.utility-topbar,
.utility-main,
.utility-seo {
    width: min(1160px, calc(100% - 32px));
    margin: 0 auto;
}

.utility-topbar {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    padding: 1.1rem 0 0;
}

.tool-breadcrumbs {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 0.45rem;
    color: var(--tool-text-muted);
    font-size: 0.94rem;
}

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

.utility-brand {
    display: inline-flex;
    align-items: center;
    gap: 0.65rem;
    color: #ffffff;
    font-weight: 800;
}

.utility-brand img {
    width: 34px;
    height: 34px;
    object-fit: contain;
}

.utility-main {
    padding: 2.2rem 0 3rem;
}

.utility-hero {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: end;
    gap: 1.5rem;
    padding: 1.6rem 0 1.8rem;
    border-bottom: 1px solid var(--tool-border);
}

.utility-kicker {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 0.75rem;
    color: var(--tool-cyan);
    font-size: 0.78rem;
    font-weight: 800;
    letter-spacing: 0.12em;
    text-transform: uppercase;
}

.utility-title {
    max-width: 780px;
    margin: 0;
    font-size: 2.5rem;
    line-height: 1.1;
}

.utility-subtitle {
    max-width: 760px;
    margin: 0.85rem 0 0;
    font-size: 1.04rem;
    line-height: 1.7;
}

.utility-meta {
    display: grid;
    grid-template-columns: repeat(2, minmax(118px, 1fr));
    gap: 0.75rem;
}

.utility-meta-item {
    min-width: 0;
    padding: 0.85rem;
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid var(--tool-border);
    border-radius: 8px;
}

.utility-meta-item span {
    display: block;
    color: var(--tool-text-muted);
    font-size: 0.72rem;
    font-weight: 800;
    text-transform: uppercase;
}

.utility-meta-item strong {
    display: block;
    margin-top: 0.18rem;
    color: var(--tool-text);
    font-size: 0.95rem;
    overflow-wrap: anywhere;
}

.utility-layout {
    display: grid;
    grid-template-columns: minmax(0, 1.35fr) minmax(300px, 0.65fr);
    gap: 1rem;
    margin-top: 1.4rem;
}

.utility-layout.utility-layout-single {
    grid-template-columns: 1fr;
}

.utility-panel {
    position: relative;
    min-width: 0;
    padding: 1.2rem;
    background: linear-gradient(180deg, var(--tool-panel-strong), var(--tool-panel));
    border: 1px solid var(--tool-border);
    border-radius: 8px;
    box-shadow: var(--tool-shadow);
}

.utility-panel + .utility-panel {
    margin-top: 1rem;
}

.utility-panel-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    margin-bottom: 1rem;
}

.utility-panel-header h2,
.utility-panel h2 {
    margin: 0;
    font-size: 1.2rem;
}

.utility-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 38px;
    height: 38px;
    flex: 0 0 auto;
    color: #07111f;
    background: var(--tool-cyan);
    border-radius: 8px;
}

.utility-form-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 1rem;
}

.utility-form-grid.three {
    grid-template-columns: repeat(3, minmax(0, 1fr));
}

.control-group {
    min-width: 0;
}

.control-group label {
    display: block;
    margin-bottom: 0.42rem;
    font-size: 0.9rem;
    font-weight: 800;
}

.utility-input,
.utility-select,
.utility-textarea,
.utility-output {
    width: 100%;
    color: var(--tool-text);
    background: #071321;
    border: 1px solid var(--tool-border);
    border-radius: 8px;
    outline: none;
}

.utility-input,
.utility-select {
    min-height: 46px;
    padding: 0.72rem 0.82rem;
}

.utility-textarea,
.utility-output {
    min-height: 260px;
    padding: 0.9rem;
    resize: vertical;
    line-height: 1.6;
}

.utility-output {
    overflow: auto;
    white-space: pre-wrap;
    word-break: break-word;
}

.utility-input:focus,
.utility-select:focus,
.utility-textarea:focus {
    border-color: var(--tool-cyan);
    box-shadow: 0 0 0 0.2rem rgba(88, 215, 255, 0.16);
}

.input-with-action {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
    gap: 0.6rem;
    align-items: center;
}

.utility-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 0.65rem;
    margin-top: 1rem;
}

.utility-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    min-height: 42px;
    padding: 0.72rem 1rem;
    color: #06101d;
    background: var(--tool-cyan);
    border: 1px solid transparent;
    border-radius: 8px;
    font-weight: 800;
    cursor: pointer;
    transition: transform 0.2s ease, background-color 0.2s ease, border-color 0.2s ease;
}

.utility-button:hover,
.utility-button:focus {
    color: #06101d;
    background: #ffffff;
    transform: translateY(-1px);
}

.utility-button.secondary {
    color: var(--tool-text);
    background: rgba(255, 255, 255, 0.06);
    border-color: var(--tool-border);
}

.utility-button.secondary:hover,
.utility-button.secondary:focus {
    color: #ffffff;
    background: rgba(255, 255, 255, 0.11);
    border-color: var(--tool-border-strong);
}

.utility-button.danger {
    color: #ffffff;
    background: rgba(255, 114, 143, 0.16);
    border-color: rgba(255, 114, 143, 0.38);
}

.utility-button:disabled {
    cursor: not-allowed;
    opacity: 0.55;
    transform: none;
}

.utility-stat-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0.75rem;
}

.stat-tile {
    min-width: 0;
    padding: 0.9rem;
    background: rgba(255, 255, 255, 0.045);
    border: 1px solid var(--tool-border);
    border-radius: 8px;
}

.stat-tile span {
    display: block;
    color: var(--tool-text-muted);
    font-size: 0.76rem;
    font-weight: 800;
    text-transform: uppercase;
}

.stat-tile strong {
    display: block;
    margin-top: 0.22rem;
    color: #ffffff;
    font-size: 1.35rem;
}

.status-message {
    margin-top: 0.8rem;
    padding: 0.8rem;
    color: var(--tool-text-soft);
    background: rgba(255, 255, 255, 0.045);
    border: 1px solid var(--tool-border);
    border-radius: 8px;
}

.status-message.ok {
    color: #dffaf1;
    border-color: rgba(71, 215, 166, 0.42);
    background: rgba(71, 215, 166, 0.12);
}

.status-message.error {
    color: #ffe4ea;
    border-color: rgba(255, 114, 143, 0.45);
    background: rgba(255, 114, 143, 0.12);
}

.switch-grid {
    display: grid;
    gap: 0.55rem;
}

.switch-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    padding: 0.75rem;
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid var(--tool-border);
    border-radius: 8px;
}

.switch-row input {
    width: 20px;
    height: 20px;
    accent-color: var(--tool-cyan);
}

.meter {
    height: 10px;
    overflow: hidden;
    background: rgba(255, 255, 255, 0.08);
    border-radius: 999px;
}

.meter-bar {
    width: 0%;
    height: 100%;
    background: var(--tool-red);
    transition: width 0.2s ease, background-color 0.2s ease;
}

.meter-label {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-top: 0.5rem;
    color: var(--tool-text-soft);
    font-size: 0.9rem;
}

.output-row {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
    gap: 0.6rem;
    align-items: start;
}

.hash-list {
    display: grid;
    gap: 0.75rem;
}

.hash-row {
    display: grid;
    grid-template-columns: 110px minmax(0, 1fr) auto;
    gap: 0.6rem;
    align-items: center;
    padding: 0.75rem;
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid var(--tool-border);
    border-radius: 8px;
}

.hash-name {
    color: var(--tool-cyan);
    font-weight: 800;
}

.hash-value {
    min-width: 0;
    color: #ffffff;
    font-family: Consolas, 'Courier New', monospace;
    font-size: 0.9rem;
    overflow-wrap: anywhere;
}

.density-list {
    display: grid;
    gap: 0.55rem;
    margin-top: 0.75rem;
}

.density-row {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
    gap: 0.75rem;
    color: var(--tool-text-soft);
}

.utility-seo {
    padding: 0 0 4rem;
}

.seo-grid {
    display: grid;
    grid-template-columns: minmax(0, 1.1fr) minmax(300px, 0.9fr);
    gap: 1rem;
    margin-top: 1rem;
}

.seo-card {
    padding: 1.35rem;
    background: rgba(255, 255, 255, 0.045);
    border: 1px solid var(--tool-border);
    border-radius: 8px;
}

.seo-card h2 {
    margin: 0 0 0.8rem;
    font-size: 1.25rem;
}

.seo-card p,
.seo-card li {
    line-height: 1.75;
}

.seo-card ul {
    margin: 0;
    padding-left: 1.1rem;
}

.faq-list details {
    padding: 0.85rem 0;
    border-top: 1px solid var(--tool-border);
}

.faq-list details:first-child {
    border-top: 0;
    padding-top: 0;
}

.faq-list summary {
    color: #ffffff;
    cursor: pointer;
    font-weight: 800;
}

.faq-list p {
    margin: 0.65rem 0 0;
}

.related-links {
    display: grid;
    gap: 0.65rem;
}

.related-links a {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    padding: 0.78rem;
    color: var(--tool-text);
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid var(--tool-border);
    border-radius: 8px;
}

.related-links a:hover {
    border-color: var(--tool-border-strong);
}

.related-links i {
    color: var(--tool-cyan);
}

@media (max-width: 940px) {
    .utility-hero,
    .utility-layout,
    .seo-grid {
        grid-template-columns: 1fr;
    }

    .utility-meta {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}

@media (max-width: 640px) {
    .utility-topbar,
    .utility-main,
    .utility-seo {
        width: min(100% - 20px, 1160px);
    }

    .utility-title {
        font-size: 2rem;
    }

    .utility-form-grid,
    .utility-form-grid.three,
    .utility-stat-grid,
    .utility-meta,
    .output-row,
    .hash-row,
    .input-with-action {
        grid-template-columns: 1fr;
    }

    .utility-actions .utility-button,
    .output-row .utility-button,
    .input-with-action .utility-button {
        width: 100%;
    }
}