.tools-page {
    background-color: #f5f2eb;
    background-image: none;
    overflow-x: hidden;
}

.site-header-tools {
    align-items: flex-start;
}

.site-nav {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: flex-end;
    gap: 10px;
}

.site-nav a {
    border: 1px solid var(--line);
    border-radius: 8px;
    background: rgba(255, 255, 255, 0.78);
    padding: 7px 10px;
    font-size: 12px;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.site-nav a[aria-current="page"] {
    border-color: var(--accent);
    background: var(--accent);
    color: #ffffff;
}

.tools-hero {
    padding: 34px 0 22px;
    display: grid;
    gap: 14px;
}

.tools-hero h1 {
    margin: 0;
    font-family: "Palatino Linotype", "Book Antiqua", Palatino, serif;
    font-size: 38px;
    line-height: 1.1;
}

.tools-hero p {
    margin: 0;
    max-width: 74ch;
    color: var(--muted);
    font-size: 17px;
    line-height: 1.6;
}

.tools-disclaimer {
    display: grid;
    grid-template-columns: minmax(120px, 0.24fr) minmax(0, 1fr);
    gap: 18px;
    margin: 8px 0 28px;
    padding: 16px 18px;
    border: 1px solid #c6d2c9;
    border-left: 5px solid #376a5a;
    border-radius: 8px;
    background: #ffffff;
    min-width: 0;
}

.tools-disclaimer h2 {
    margin: 0;
    font-size: 16px;
    font-family: "Palatino Linotype", "Book Antiqua", Palatino, serif;
}

.tools-disclaimer p {
    margin: 0;
    color: var(--muted);
    line-height: 1.55;
    overflow-wrap: anywhere;
}

.tool-shell {
    display: grid;
    grid-template-columns: 260px minmax(0, 1fr);
    gap: 20px;
    align-items: start;
    width: 100%;
    max-width: 100%;
    min-width: 0;
}

.tool-tabs {
    display: grid;
    gap: 8px;
    position: sticky;
    top: 18px;
    min-width: 0;
}

.tool-tabs button,
.tool-action,
.tool-upload-label {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border: 1px solid var(--line);
    border-radius: 8px;
    background: #ffffff;
    color: var(--ink);
    padding: 10px 12px;
    font: inherit;
    text-decoration: none;
    cursor: pointer;
}

.tool-tabs button {
    width: 100%;
    min-width: 0;
    text-align: left;
    line-height: 1.25;
    overflow-wrap: anywhere;
}

.tool-tabs button.is-active {
    border-color: var(--accent);
    background: var(--accent);
    color: #ffffff;
}

.tool-panel {
    width: 100%;
    max-width: 100%;
    min-width: 0;
    overflow: hidden;
    border: 1px solid var(--line);
    border-radius: 8px;
    background: #ffffff;
    box-shadow: var(--shadow);
    padding: 20px;
}

.tool-panel-header {
    display: grid;
    gap: 8px;
    margin-bottom: 18px;
}

.tool-panel-header h2 {
    margin: 0;
    font-family: "Palatino Linotype", "Book Antiqua", Palatino, serif;
    font-size: 27px;
}

.tool-panel-header p {
    margin: 0;
    color: var(--muted);
    line-height: 1.55;
}

.tool-form h3,
.tool-results h3 {
    margin: 20px 0 10px;
    font-family: "Palatino Linotype", "Book Antiqua", Palatino, serif;
    font-size: 19px;
}

.tool-form-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(190px, 1fr));
    gap: 12px;
}

.tool-field {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
    gap: 7px 8px;
    align-items: center;
}

.tool-field span {
    grid-column: 1 / -1;
    color: var(--ink);
    font-size: 14px;
}

.tool-field input,
.tool-field select,
.tool-input-table input,
.tool-input-table select {
    width: 100%;
    min-width: 0;
    border: 1px solid var(--line);
    border-radius: 8px;
    padding: 9px 10px;
    font: inherit;
    background: #fbfaf7;
}

.tool-field em {
    font-style: normal;
    color: var(--muted);
    font-size: 13px;
}

.tool-check-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
    gap: 10px;
}

.tool-check {
    display: grid;
    grid-template-columns: auto minmax(0, 1fr);
    gap: 8px;
    align-items: start;
    border: 1px solid var(--line);
    border-radius: 8px;
    padding: 10px;
    background: #fbfaf7;
    line-height: 1.35;
}

.tool-check input {
    margin-top: 2px;
}

.table-scroll {
    width: 100%;
    overflow-x: auto;
}

.tool-input-table,
.tool-result-table {
    width: 100%;
    border-collapse: collapse;
    min-width: 560px;
}

.hvac-room-table {
    min-width: 1120px;
}

.tool-input-table th,
.tool-result-table th {
    text-align: left;
    color: var(--ink);
    background: #eef1eb;
    font-size: 13px;
}

.tool-input-table th,
.tool-input-table td,
.tool-result-table th,
.tool-result-table td {
    border: 1px solid var(--line);
    padding: 8px;
    vertical-align: top;
}

.tool-result-table td {
    color: var(--muted);
}

.tool-result-table a {
    color: var(--accent);
    text-decoration: underline;
    text-underline-offset: 2px;
}

.tool-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    align-items: center;
    margin: 18px 0 12px;
    padding-top: 16px;
    border-top: 1px solid var(--line);
}

.tool-action.primary {
    border-color: var(--accent);
    background: var(--accent);
    color: #ffffff;
}

.tool-action.mail {
    border-color: #376a5a;
    background: #376a5a;
    color: #ffffff;
}

.tool-action.is-disabled {
    background: #f1f3f2;
    color: var(--muted);
    cursor: default;
}

.study-dialog-backdrop {
    position: fixed;
    inset: 0;
    z-index: 1000;
    display: grid;
    place-items: center;
    padding: 24px;
    background: rgba(35, 40, 38, 0.46);
}

.study-dialog-backdrop[hidden] {
    display: none;
}

.study-dialog {
    width: min(520px, 100%);
    max-height: min(720px, calc(100vh - 48px));
    overflow: auto;
    border: 1px solid var(--line);
    border-radius: 8px;
    background: #ffffff;
    box-shadow: var(--shadow);
    padding: 20px;
}

.study-dialog form {
    display: grid;
    gap: 14px;
}

.study-dialog-header {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
    gap: 12px;
    align-items: center;
}

.study-dialog h2,
.study-dialog p {
    margin: 0;
}

.study-dialog h2 {
    font-family: "Palatino Linotype", "Book Antiqua", Palatino, serif;
    font-size: 24px;
    line-height: 1.2;
}

.study-dialog p {
    color: var(--muted);
    line-height: 1.5;
}

.study-dialog-close {
    inline-size: 36px;
    block-size: 36px;
    border: 1px solid var(--line);
    border-radius: 50%;
    background: #ffffff;
    color: var(--ink);
    font-size: 22px;
    line-height: 1;
    cursor: pointer;
}

.study-field {
    display: grid;
    gap: 7px;
}

.study-field span,
.study-consent {
    font-size: 14px;
}

.study-field input {
    width: 100%;
    min-width: 0;
    border: 1px solid var(--line);
    border-radius: 8px;
    padding: 9px 10px;
    font: inherit;
    background: #fbfaf7;
}

.study-consent {
    display: grid;
    grid-template-columns: auto minmax(0, 1fr);
    gap: 8px;
    align-items: start;
    line-height: 1.35;
}

.study-turnstile {
    min-height: 65px;
}

.study-status {
    min-height: 20px;
    font-size: 13px;
}

.study-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    align-items: center;
}

.tool-action:hover,
.tool-upload-label:hover {
    border-color: var(--accent-strong);
}

.tool-action.is-disabled:hover {
    border-color: var(--line);
}

.tool-upload-label input {
    position: absolute;
    inline-size: 1px;
    block-size: 1px;
    opacity: 0;
    pointer-events: none;
}

.tool-message {
    min-height: 20px;
    color: var(--muted);
    font-size: 13px;
}

.tool-results {
    display: grid;
    gap: 14px;
    margin-top: 12px;
}

.tool-results h2 {
    margin: 0;
    font-family: "Palatino Linotype", "Book Antiqua", Palatino, serif;
    font-size: 24px;
}

.result-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 10px;
}

.result-card {
    display: grid;
    gap: 4px;
    border: 1px solid var(--line);
    border-radius: 8px;
    padding: 12px;
    background: #f8faf8;
}

.result-card span {
    color: var(--muted);
    font-size: 13px;
}

.result-card strong {
    font-size: 22px;
    line-height: 1.1;
}

.result-card em {
    color: var(--muted);
    font-style: normal;
    font-size: 12px;
}

.tool-errors,
.tool-warnings,
.verification-block {
    border-radius: 8px;
    padding: 12px 14px;
}

.tool-errors {
    border: 1px solid #c86969;
    background: #fff7f5;
}

.tool-warnings {
    border: 1px solid #d6b15d;
    background: #fffaf0;
}

.verification-block {
    border: 1px solid #cbd7df;
    background: #f7fbfd;
}

.tool-errors h3,
.tool-warnings h3,
.verification-block h3 {
    margin-top: 0;
}

.tool-errors ul,
.tool-warnings ul,
.verification-block ul {
    margin: 0;
    padding-left: 18px;
    color: var(--muted);
}

.verification-block .pass {
    color: #2d6a4f;
}

.verification-block .fail {
    color: #9d2d2d;
}

.tools-noscript {
    border: 1px solid #c86969;
    border-radius: 8px;
    background: #fff7f5;
    padding: 14px;
}

@media (max-width: 900px) {
    .site-header-tools {
        gap: 18px;
    }

    .site-nav {
        justify-content: flex-start;
    }

    .tool-shell {
        grid-template-columns: 1fr;
    }

    .tool-tabs {
        position: static;
        grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
    }

    .tools-disclaimer {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 600px) {
    .tools-page .page {
        padding-right: 36px;
    }

    .tools-hero h1 {
        font-size: 28px;
    }

    .tools-disclaimer,
    .tool-shell,
    .tool-tabs,
    .tool-panel {
        width: calc(100% - 36px);
        max-width: calc(100% - 36px);
    }

    .tool-tabs {
        grid-template-columns: 1fr;
    }

    .tool-panel {
        padding: 16px;
    }

    .tool-actions {
        align-items: stretch;
    }

    .tool-action,
    .tool-upload-label,
    .study-actions .tool-action {
        width: 100%;
        text-align: center;
    }

    .result-card strong {
        font-size: 19px;
    }
}

@media print {
    body {
        background: #ffffff;
    }

    .site-header,
    .tools-hero,
    .tools-disclaimer,
    .tool-tabs,
    .tool-actions,
    .footer {
        display: none;
    }

    .page {
        max-width: none;
        padding: 0;
    }

    .tool-shell {
        display: block;
    }

    .tool-panel {
        box-shadow: none;
        border: none;
        padding: 0;
    }
}