/* IStructE-inspired palette: greens and charcoal aligned with istructe.org */

:root {
    --color-teal: #19575d;
    --color-green: #279c6f;
    --color-green-dark: #134d37;
    --color-charcoal: #4d4f53;
    --color-muted: #5c5f63;
    --color-border: #d8dedc;
    --color-bg: #f4f7f6;
    --color-card: #ffffff;
    --color-ink: #1a1d1c;
    --shadow-soft: 0 2px 8px rgba(25, 87, 93, 0.08);
    --radius: 6px;
    --font: "Segoe UI", system-ui, -apple-system, Roboto, "Helvetica Neue", Arial, sans-serif;
}

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

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    font-family: var(--font);
    font-size: 15px;
    line-height: 1.45;
    color: var(--color-ink);
    min-height: 100vh;
}

a {
    line-break: anywhere;
}

.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;
}

.blur-overlay {
    position: fixed;
    inset: 0;
    backdrop-filter: blur(6px);
    z-index: 1;
}

.disclaimer {
    position: fixed;
    z-index: 2;
    top: 0px;
    left: 50%;
    transform: translate(-50%);
    background: var(--color-card);
    padding: 1.5rem 1.75rem;
    border-radius: var(--radius);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.15);
    max-width: 32rem;
    text-align: center;
    border: 1px solid var(--color-border);
}

    .disclaimer p {
        margin: 0 0 1rem;
        text-align: left;
        color: var(--color-muted);
        font-size: 0.95rem;
    }

.site-header {
    background: var(--color-teal);
    color: #fff;
    padding: 0.75rem 1.25rem;
    border-bottom: 3px solid var(--color-green);
}

.brand {
    text-decoration: none;
    color: inherit;
    display: inline-flex;
    flex-direction: column;
    gap: 0.15rem;
}

.brand__name {
    font-weight: 600;
    letter-spacing: 0.02em;
    font-size: 1rem;
}

.brand__tag {
    font-size: 0.8rem;
    opacity: 0.9;
    font-weight: 400;
}

/* Events-style search strip */
.search-hero {
    background: var(--color-card);
    border-bottom: 1px solid var(--color-border);
    padding: 1rem 1.25rem 1.25rem;
}

.search-hero__inner {
    max-width: 1200px;
    margin: 0 auto;
}

.search-hero__input {
    width: 100%;
    max-width: 100%;
    padding: 0.65rem 1rem;
    font-size: 1rem;
    border: 2px solid var(--color-border);
    border-radius: var(--radius);
    font-family: inherit;
    transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

    .search-hero__input:hover {
        border-color: #b5c9c4;
    }

    .search-hero__input:focus {
        outline: none;
        border-color: var(--color-green);
        box-shadow: 0 0 0 3px rgba(39, 156, 111, 0.2);
    }

.search-hero__meta {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 0.75rem 1rem;
    margin-top: 0.85rem;
}

.sort-label {
    font-size: 0.85rem;
    color: var(--color-muted);
}

.sort-select {
    padding: 0.4rem 2rem 0.4rem 0.6rem;
    border-radius: var(--radius);
    border: 1px solid var(--color-border);
    font-family: inherit;
    background: var(--color-card);
    color: var(--color-ink);
}

.result-count {
    font-size: 0.9rem;
    color: var(--color-muted);
    margin-left: auto;
}

.layout {
    display: grid;
    grid-template-columns: minmax(260px, 320px) 1fr;
    gap: 0;
    max-width: 1400px;
    margin: 0 auto;
    min-height: 50vh;
}

@media (max-width: 900px) {
    .layout {
        grid-template-columns: 1fr;
    }

    .result-count {
        margin-left: 0;
        width: 100%;
    }
}

.filters-panel {
    background: var(--color-card);
    border-right: 1px solid var(--color-border);
    padding: 1rem 1rem 2rem;
}

@media (max-width: 900px) {
    .filters-panel {
        border-right: none;
        border-bottom: 1px solid var(--color-border);
    }
}

.filter-form {
    display: flex;
    flex-direction: column;
    gap: 0.35rem;
}

.filter-section {
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    background: #fafcfb;
    margin-bottom: 0.5rem;
}

    .filter-section summary {
        cursor: pointer;
        font-weight: 600;
        font-size: 0.9rem;
        color: var(--color-teal);
        padding: 0.55rem 0.65rem;
        list-style: none;
        display: flex;
        align-items: center;
        gap: 0.35rem;
    }

        .filter-section summary::-webkit-details-marker {
            display: none;
        }

        .filter-section > summary::before {
            content: "";
            width: 0.45rem;
            height: 0.45rem;
            border-right: 2px solid var(--color-green);
            border-bottom: 2px solid var(--color-green);
            transform: rotate(-45deg);
            transition: transform 0.15s ease;
            flex-shrink: 0;
        }

    .filter-section[open] > summary::before {
        transform: rotate(45deg);
    }

.filter-section__body {
    padding: 0 0.75rem 0.75rem;
    display: flex;
    flex-direction: column;
    gap: 0.45rem;
}

.filter-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0.25rem 0.5rem;
}

.field-hint {
    margin: 0.25rem 0 0;
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--color-charcoal);
}

.field-label {
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--color-muted);
    margin-top: 0.35rem;
}

.field-control {
    width: 100%;
    padding: 0.45rem 0.55rem;
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    font-family: inherit;
    font-size: 0.9rem;
    background: #fff;
}

    .field-control:focus {
        outline: none;
        border-color: var(--color-green);
        box-shadow: 0 0 0 2px rgba(39, 156, 111, 0.15);
    }

.field-control--narrow {
    max-width: 8rem;
}

.checkbox-label {
    display: flex;
    align-items: flex-start;
    gap: 0.45rem;
    font-size: 0.88rem;
    cursor: pointer;
    color: var(--color-ink);
}

    .checkbox-label input {
        margin-top: 0.2rem;
        accent-color: var(--color-green-dark);
    }

.feature-block {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.feature-accordion {
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
}

.feature-acc__group {
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    background: #fff;
    overflow: hidden;
}

.feature-acc__group--leaf {
    padding: 0.5rem 0.6rem;
}

.feature-acc__group > summary {
    cursor: pointer;
    list-style: none;
    padding: 0.5rem 0.6rem;
    font-weight: 600;
    font-size: 0.86rem;
    color: var(--color-teal);
    display: flex;
    align-items: center;
    gap: 0.35rem;
}

.feature-acc__summary {
    width: 100%;
    display: flex;
    align-items: center;
}

.feature-acc__summary-row {
    width: 100%;
    align-items: center;
    display: flex;
    gap: 0.45rem;
}

.feature-acc__summary-row input {
    margin-top: 0;
}

.feature-acc__summary-text {
    display: inline-block;
    width: 100%;
    user-select: none;
}

.feature-acc__group > summary::-webkit-details-marker {
    display: none;
}

.feature-acc__group > summary::marker {
    content: "";
}

.feature-acc__body {
    padding: 0.15rem 0.65rem 0.65rem;
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.feature-acc__child {
    margin-left: 0.35rem;
    border-left: 2px solid rgba(39, 156, 111, 0.25);
    padding-left: 0.55rem;
}

.feature-acc__leaf {
    margin-left: 0.25rem;
}

.feature-acc__leaf--card {
    margin-left: 0;
    font-weight: 600;
    font-size: 0.86rem;
    color: var(--color-teal);
}

.feature-acc__dash {
    display: inline-block;
    width: 0.6rem;
    color: var(--color-muted);
    flex-shrink: 0;
}

.feature-row {
    display: flex;
    align-items: center;
    gap: 0.35rem;
}

    .feature-row .feature-select {
        flex: 1;
    }

.btn-remove-feature {
    border: 1px solid var(--color-border);
    background: #fff;
    border-radius: var(--radius);
    width: 2rem;
    height: 2rem;
    cursor: pointer;
    font-size: 1.1rem;
    line-height: 1;
    color: var(--color-muted);
    flex-shrink: 0;
}

    .btn-remove-feature:hover {
        border-color: var(--color-green);
        color: var(--color-teal);
    }

.tooltip {
    position: relative;
}

    .tooltip .tooltip-text {
        visibility: hidden;
        opacity: 0;
        width: max-content;
        max-width: 280px;
        background: var(--color-charcoal);
        color: #fff;
        text-align: left;
        padding: 0.5rem 0.65rem;
        border-radius: var(--radius);
        position: absolute;
        z-index: 5;
        left: 0;
        top: 100%;
        margin-top: 0.25rem;
        font-size: 0.8rem;
        font-weight: 400;
        line-height: 1.35;
        box-shadow: var(--shadow-soft);
        transition: opacity 0.15s ease;
        pointer-events: none;
    }

    .tooltip:hover .tooltip-text,
    .tooltip:focus-within .tooltip-text {
        visibility: visible;
        opacity: 1;
    }

.results {
    padding: 1rem 1.25rem 2.5rem;
}

.card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 1rem;
    align-items: stretch;
}

.load-error {
    grid-column: 1 / -1;
    padding: 2rem;
    text-align: center;
    color: var(--color-muted);
}

.tool-card {
    background: var(--color-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    box-shadow: var(--shadow-soft);
    padding: 1rem 1.1rem;
    display: flex;
    flex-direction: column;
    gap: 0.65rem;
}

.tool-card__head {
    margin: 0;
}

.tool-card__title {
    margin: 0 0 0.2rem;
    font-size: 1.05rem;
    font-weight: 600;
    color: var(--color-teal);
    line-height: 1.35;
}

    .tool-card__title strong {
        font-weight: 700;
        color: var(--color-teal);
    }

.tool-card__developer {
    margin: 0;
    font-size: 0.88rem;
    color: var(--color-muted);
}

.tool-card__badges {
    display: flex;
    flex-wrap: wrap;
    gap: 0.35rem;
}

.badge {
    display: inline-block;
    font-size: 0.72rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    padding: 0.2rem 0.45rem;
    border-radius: 3px;
}

.badge--type {
    background: rgba(25, 87, 93, 0.1);
    color: var(--color-teal);
}

.badge--price {
    background: rgba(39, 156, 111, 0.12);
    color: var(--color-green-dark);
}

.tool-card__tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.3rem;
}

.tag {
    font-size: 0.72rem;
    padding: 0.15rem 0.4rem;
    border-radius: 999px;
    background: #eef3f2;
    color: var(--color-charcoal);
    border: 1px solid var(--color-border);
}

.tool-card__summary {
    margin: 0;
    font-size: 0.82rem;
    color: var(--color-muted);
    line-height: 1.45;
    white-space: pre-line;
}

    .tool-card__summary strong {
        font-weight: 700;
        color: var(--color-charcoal);
    }

.tool-card__dd-rich {
    line-height: 1.45;
}

    .tool-card__dd-rich strong {
        font-weight: 700;
        color: var(--color-charcoal);
    }

.tool-card__actions {
    display: flex;
    flex-wrap: wrap;
    gap: 0.45rem;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.45rem 0.85rem;
    font-size: 0.88rem;
    font-weight: 600;
    font-family: inherit;
    border-radius: var(--radius);
    cursor: pointer;
    text-decoration: none;
    border: none;
    transition: background 0.15s ease, color 0.15s ease, border-color 0.15s ease;
}

.btn--primary {
    background: var(--color-green);
    color: #fff;
}

    .btn--primary:hover {
        background: var(--color-green-dark);
    }

.btn--ghost {
    background: transparent;
    color: var(--color-teal);
    border: 1px solid var(--color-border);
}

    .btn--ghost:hover {
        border-color: var(--color-green);
        background: rgba(39, 156, 111, 0.06);
    }

.btn--small {
    font-size: 0.8rem;
    padding: 0.35rem 0.65rem;
}

.tool-card__details {
    font-size: 0.82rem;
    border-top: 1px solid var(--color-border);
    padding-top: 0.5rem;
}

    .tool-card__details summary {
        cursor: pointer;
        font-weight: 600;
        color: var(--color-teal);
        padding: 0.25rem 0;
    }

.tool-card__dl {
    margin: 0.5rem 0 0;
    display: grid;
    grid-template-columns: minmax(0, 38%) 1fr;
    gap: 0.35rem 0.65rem;
    font-size: 0.78rem;
}

    .tool-card__dl dt {
        margin: 0;
        font-weight: 600;
        color: var(--color-charcoal);
    }

    .tool-card__dl dd {
        margin: 0;
        color: var(--color-muted);
    }

@media (max-width: 400px) {
    .tool-card__dl {
        grid-template-columns: 1fr;
    }
}