/*
 * Shared tool platform.
 *
 * Tool views keep their functional hooks and specialist presentation, but
 * recurring controls and surfaces use this small, semantic UI contract.
 */

:root {
    --tool-content-width: 64rem;
    --tool-page-padding: clamp(1rem, 3vw, 2.5rem);
    --tool-gap: clamp(1rem, 2vw, 1.5rem);
    --tool-panel-padding: clamp(1rem, 2.25vw, 1.75rem);
    --tool-control-height: 2.75rem;
    --tool-radius: var(--radius-md);
    --tool-control-radius: var(--radius-sm);
    --tool-border: var(--color-border);
    --tool-border-strong: var(--color-border-strong);
    --tool-control-bg: var(--color-input-bg);
    --tool-control-text: var(--color-input-text);
    --tool-control-focus: var(--color-focus);
    --tool-shadow: var(--shadow-sm);
}

/* Every real tool exposes the same page-level contract. */
.tool-page[data-tool-root] {
    width: min(100%, var(--tool-content-width));
    margin-inline: auto;
    padding: var(--tool-page-padding) clamp(1rem, 3vw, 2rem) 3rem;
    display: flex;
    flex-direction: column;
    gap: var(--tool-gap);
    color: var(--color-text);
}

/* Keep the functional area independent from explanatory content below it. */
main.tool-page[data-tool-root] {
    min-height: auto;
}

.tool-page[data-tool-root].stack-l > * + * {
    margin-top: 0;
}

.tool-page[data-tool-root] > .tool-page__content {
    display: grid;
    gap: var(--tool-gap);
    min-height: calc(100vh - var(--navbar-height, var(--site-nav-height, 0px)));
    align-content: start;
}

.tool-info {
    width: min(100%, var(--tool-content-width));
    margin-inline: auto;
}

.tool-page[data-tool-root] > .tool-page-header {
    width: 100%;
    max-width: none;
    margin: 0;
    padding: 0;
}

.tool-page[data-tool-root] > .tool-page-header .tool-page-header__content {
    justify-items: center;
}

/* Shared surface primitives and compatibility aliases for existing tools. */
:where(
    .tool-panel,
    .tool-workspace,
    .tool-results,
    .tool-result,
    .converter-panel,
    .converter-section,
    .calculator-section,
    .subnet-card,
    .subnet-results,
    .find-ip-panel,
    .find-ip-results,
    .clock-app,
    .week-card,
    .rate-dashboard,
    .rate-card,
    .iban-card,
    .pg-card,
    .result-card,
    .form-card,
    .card
) {
    border-color: var(--tool-border);
    color: var(--color-text);
}

:where(
    .tool-panel,
    .tool-results,
    .tool-result,
    .converter-panel,
    .converter-section,
    .calculator-section,
    .subnet-card,
    .subnet-results,
    .find-ip-panel,
    .find-ip-results,
    .clock-app,
    .week-card,
    .rate-dashboard,
    .rate-card,
    .iban-card,
    .pg-card,
    .result-card,
    .form-card
) {
    background: var(--color-surface);
    border: 1px solid var(--tool-border);
    border-radius: var(--tool-radius);
    box-shadow: var(--tool-shadow);
}

.tool-panel,
.tool-results,
.tool-result {
    padding: var(--tool-panel-padding);
}

/* The explicit platform class wins over legacy component aliases while
   leaving specialist selectors available for genuinely unique displays. */
.tool-page[data-tool-root] .tool-panel,
.tool-page[data-tool-root] .tool-results,
.tool-page[data-tool-root] .tool-result {
    background: var(--color-surface);
    border: 1px solid var(--tool-border);
    border-radius: var(--tool-radius);
    box-shadow: var(--tool-shadow);
    color: var(--color-text);
    padding: var(--tool-panel-padding);
}

.tool-form,
.tool-fields,
.tool-actions,
.tool-results,
.tool-workspace {
    display: grid;
    gap: var(--tool-gap);
}

.tool-form,
.tool-fields {
    grid-template-columns: repeat(auto-fit, minmax(min(100%, 14rem), 1fr));
    align-items: end;
}

.tool-actions {
    grid-auto-flow: column;
    grid-auto-columns: max-content;
    justify-content: start;
    align-items: center;
}

.tool-field,
.tool-label,
.tool-control,
.tool-result {
    min-width: 0;
}

.tool-field,
.tool-label {
    display: grid;
    gap: 0.4rem;
}

.tool-label,
.field-label,
.section-label {
    color: var(--color-text);
    font-weight: 600;
}

/* Common controls. Existing IDs and data attributes remain untouched. */
:where(
    .tool-page[data-tool-root] input:not([type="checkbox"]):not([type="radio"]):not([type="range"]),
    .tool-page[data-tool-root] select,
    .tool-page[data-tool-root] textarea,
    .tool-control,
    .form-control,
    .channel-input,
    .result-input,
    .calculator-input,
    .converter-input,
    .iban-input,
    .iban-field-input,
    .pg-input,
    .pg-select
) {
    width: 100%;
    min-height: var(--tool-control-height);
    padding: 0.65rem 0.8rem;
    border: 1px solid var(--tool-border-strong);
    border-radius: var(--tool-control-radius);
    background: var(--tool-control-bg);
    color: var(--tool-control-text);
}

:where(
    .tool-page[data-tool-root] input:not([type="checkbox"]):not([type="radio"]):not([type="range"]),
    .tool-page[data-tool-root] select,
    .tool-page[data-tool-root] textarea,
    .tool-control,
    .form-control,
    .channel-input,
    .result-input,
    .calculator-input,
    .converter-input,
    .iban-input,
    .iban-field-input,
    .pg-input,
    .pg-select
):focus {
    outline: none;
    border-color: var(--tool-control-focus);
    box-shadow: 0 0 0 3px color-mix(in srgb, var(--tool-control-focus) 25%, transparent);
}

.tool-page[data-tool-root] :is(
    .tool-control,
    .form-control,
    .channel-input,
    .result-input,
    .calculator-input,
    .converter-input,
    .iban-input,
    .iban-field-input,
    .pg-input,
    .pg-select
) {
    min-height: var(--tool-control-height);
    border: 1px solid var(--tool-border-strong);
    border-radius: var(--tool-control-radius);
    background: var(--tool-control-bg);
    color: var(--tool-control-text);
}

.tool-page[data-tool-root] :is(
    .tool-control,
    .form-control,
    .channel-input,
    .result-input,
    .calculator-input,
    .converter-input,
    .iban-input,
    .iban-field-input,
    .pg-input,
    .pg-select
):focus {
    outline: none;
    border-color: var(--tool-control-focus);
    box-shadow: 0 0 0 3px color-mix(in srgb, var(--tool-control-focus) 25%, transparent);
}

:where(.tool-page[data-tool-root] textarea) {
    min-height: 7rem;
    resize: vertical;
}

.tool-actions :where(.btn, .pg-btn, button),
.tool-page[data-tool-root] :where(.btn, .pg-btn) {
    min-height: 2.5rem;
}

.tool-page[data-tool-root] .pg-progress > span {
    display: block;
    width: 0%;
}

.tool-status,
.tool-message,
.tool-hint,
.tool-page[data-tool-root] .hint,
.tool-page[data-tool-root] .muted,
.tool-page[data-tool-root] .help-text {
    color: var(--color-muted);
}

.tool-status--success,
.tool-message--success {
    color: var(--color-success);
}

.tool-status--warning,
.tool-message--warning {
    color: var(--color-warning);
}

.tool-status--error,
.tool-message--error,
.tool-page[data-tool-root] .error-message {
    color: var(--color-error);
}

.tool-table,
.tool-page[data-tool-root] table {
    width: 100%;
    border-collapse: collapse;
    background: var(--color-table-bg);
    color: var(--color-text);
}

.tool-table th,
.tool-table td,
.tool-page[data-tool-root] th,
.tool-page[data-tool-root] td {
    border: 1px solid var(--color-table-border);
    padding: 0.7rem 0.8rem;
    text-align: start;
    vertical-align: top;
}

.tool-table th,
.tool-page[data-tool-root] th {
    background: var(--color-table-header-bg);
    font-weight: 700;
}

.tool-page--converter .tool-workspace,
.tool-page--network .tool-workspace {
    align-items: stretch;
}

.tool-page--display .tool-results,
.tool-page--reference .tool-results {
    align-items: center;
}

/* Shared explanatory content for home, category and tool pages. */
.tool-info[data-tool-info],
.tool-info.home-info {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: var(--tool-gap);
    align-items: stretch;
}

.tool-info.home-info {
    align-items: start;
}

.tool-info__grid {
    display: contents;
}

.tool-info-card {
    min-width: 0;
    margin: 0;
    padding: 0;
}

.tool-info-card__inner {
    height: 100%;
    min-width: 0;
    padding: clamp(1rem, 2vw, 1.35rem);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    background: var(--color-surface);
    box-shadow: none;
}

.home-info .tool-info-card__inner {
    height: auto;
}

.tool-info-card--purpose,
.tool-info-card--notes,
.tool-info-card--faq,
.tool-info-card--reference,
.home-info-card:first-child,
.category-info-card {
    grid-column: 1 / -1;
}

.tool-info-card--purpose .tool-info-card__inner,
.category-info-card .tool-info-card__inner {
    border-top: 2px solid var(--color-accent);
}

.tool-info-card__title {
    margin: 0 0 0.8rem;
    padding-bottom: 0.65rem;
    border-bottom: 1px solid var(--color-border);
    color: var(--color-heading);
    font-size: clamp(1.15rem, 1rem + 0.45vw, 1.4rem);
    font-weight: 700;
    line-height: 1.25;
    text-align: start;
}

.tool-info-card__body {
    display: grid;
    gap: 0.7rem;
    color: var(--color-subtext);
    font-size: 0.95rem;
    line-height: 1.6;
    text-align: start;
}

.tool-info-card__body p,
.tool-info-card__body ul,
.tool-info-card__body ol {
    margin: 0;
}

.tool-info-card__body ul,
.tool-info-card__body ol {
    display: grid;
    gap: 0.4rem;
    padding-inline-start: 1.15rem;
    list-style-position: outside;
}

.tool-info-card__body ul {
    list-style: disc;
}

.tool-info-card__body ol {
    list-style: decimal;
}

.tool-info-card__body li {
    padding-inline-start: 0.2rem;
}

.home-info-subsections {
    display: grid;
    gap: 0.75rem;
}

.home-info-subsection {
    display: grid;
    gap: 0.2rem;
}

.home-info-subsection h3 {
    margin: 0;
    font-size: 0.95rem;
}

.home-info .tool-info-card__body {
    text-align: start;
}

.home-info .tool-info-card__body ul.home-info-list {
    list-style: none;
    padding-inline-start: 0;
    text-align: start;
}

.home-info .tool-info-card__body ul.home-info-list > li {
    position: relative;
    padding-inline-start: 1.15rem;
}

.home-info .tool-info-card__body ul.home-info-list > li::before {
    position: absolute;
    top: 0.72em;
    inset-inline-start: 0.15rem;
    width: 0.35rem;
    height: 0.35rem;
    border-radius: 50%;
    background: var(--color-accent);
    content: '';
}

.tool-info-card__body li::marker {
    color: var(--color-accent);
    font-weight: 700;
}

.tool-info-card__body h3,
.tool-info-card__body h4 {
    margin: 0.5rem 0 0;
    color: var(--color-heading);
    font-size: 1rem;
    line-height: 1.35;
    text-align: start;
}

.tool-info-card--faq .tool-info-card__body {
    gap: 0.55rem;
}

.tool-faq-item {
    overflow: hidden;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    background: var(--color-surface-muted);
}

.tool-faq-item + .tool-faq-item {
    margin-top: 0.05rem;
}

.tool-faq-item summary {
    display: flex;
    min-height: 3rem;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    padding: 0.75rem 0.9rem;
    cursor: pointer;
    list-style: none;
    color: var(--color-heading);
    font-weight: 650;
}

.tool-faq-item summary::-webkit-details-marker {
    display: none;
}

.tool-faq-item summary::after {
    flex: 0 0 auto;
    color: var(--color-accent);
    content: '+';
    font-size: 1.25rem;
    font-weight: 400;
    line-height: 1;
}

.tool-faq-item[open] summary {
    border-bottom: 1px solid var(--color-border);
}

.tool-faq-item[open] summary::after {
    transform: rotate(45deg);
}

.tool-faq-item summary:focus-visible {
    outline: 3px solid color-mix(in srgb, var(--color-focus) 65%, transparent);
    outline-offset: -3px;
}

.tool-faq-item__question {
    min-width: 0;
    overflow-wrap: anywhere;
}

.tool-faq-item__answer {
    display: grid;
    grid-template-rows: 0fr;
    overflow: hidden;
    padding: 0 0.9rem;
    opacity: 0;
    color: var(--color-subtext);
    line-height: 1.6;
    transition:
        grid-template-rows 180ms ease,
        padding-block 180ms ease,
        opacity 140ms ease;
}

.tool-faq-item[open] .tool-faq-item__answer {
    grid-template-rows: 1fr;
    padding-block: 0.8rem 0.9rem;
    opacity: 1;
}

.tool-faq-item.is-opening .tool-faq-item__answer,
.tool-faq-item.is-closing .tool-faq-item__answer {
    grid-template-rows: 0fr;
    padding-block: 0;
    opacity: 0;
}

.tool-faq-item__answer p {
    min-height: 0;
    overflow: hidden;
    margin: 0;
}

@media (prefers-reduced-motion: reduce) {
    .tool-faq-item__answer {
        transition: none;
    }
}

.category-info-section,
.category-info-grid {
    width: 100%;
}

.category-info-card__title {
    margin-bottom: 0.8rem;
}

.category-info-card__body {
    gap: 0.55rem;
}

@media (max-width: 44rem) {
    .tool-info[data-tool-info],
    .tool-info.home-info {
        grid-template-columns: 1fr;
    }

    .tool-info-card--purpose,
    .tool-info-card--notes,
    .tool-info-card--faq,
    .tool-info-card--reference,
    .home-info-card:first-child,
    .category-info-card {
        grid-column: auto;
    }
}

@media (max-width: 48rem) {
    .tool-page[data-tool-root] {
        padding-inline: 1rem;
    }

    .tool-actions {
        grid-auto-flow: row;
        grid-auto-columns: auto;
        grid-template-columns: 1fr;
    }

    .tool-actions :where(.btn, .pg-btn, button) {
        width: 100%;
    }
}

@media (max-width: 30rem) {
    .tool-page[data-tool-root] {
        padding-inline: 0.75rem;
    }

    .tool-panel,
    .tool-results,
    .tool-result {
        padding: 1rem;
    }
}