.tools-page { background: var(--paper); }
.tools-header { position: relative; background: var(--ink); }
.tools-intro { padding: 88px clamp(24px, 7vw, 110px) 68px; background: var(--ink); color: var(--white); }
.tools-intro h1 { max-width: 900px; margin: 0; font-size: clamp(48px, 6vw, 82px); line-height: .98; letter-spacing: -.055em; font-weight: 620; }
.tools-intro .eyebrow { color: var(--acid); }
.tools-intro > p:last-child { max-width: 760px; margin: 28px 0 0; color: rgba(251,253,255,.74); font-size: 18px; line-height: 1.65; }
.tool-index { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 32px; }
.tool-index a { padding: 11px 15px; border: 1px solid rgba(255,255,255,.3); border-radius: 999px; color: var(--white); font-size: 13px; font-weight: 700; }
.tool-index a:hover { background: var(--white); color: var(--ink); }
.calculator-layout { display: grid; grid-template-columns: minmax(230px, .6fr) minmax(0, 1.4fr); gap: clamp(28px, 5vw, 76px); padding: 72px clamp(24px, 7vw, 110px) 100px; }
.gauge-layout { padding-bottom: 72px; }
.dart-layout { padding-top: 72px; border-top: 1px solid var(--line); }
.calculator-guide { align-self: start; position: sticky; top: 24px; padding: 28px; border: 1px solid var(--line); background: var(--cream); }
.calculator-guide h2 { margin: 0 0 14px; font-size: 25px; letter-spacing: -.025em; }
.guide-copy { margin: 0; color: var(--muted); line-height: 1.58; }
.tool-label { margin: 0 0 20px; color: var(--signal); font-size: 11px; font-weight: 800; letter-spacing: .16em; text-transform: uppercase; }
.calculator-guide ol { margin: 0; padding-left: 20px; }
.calculator-guide li { margin: 0 0 16px; padding-left: 5px; color: var(--muted); line-height: 1.55; }
.method-note { margin: 26px 0 0; padding-top: 22px; border-top: 1px solid var(--line); color: var(--muted); font-size: 12px; line-height: 1.6; }
.formula-box { margin-top: 24px; padding: 16px; background: var(--ink); color: var(--white); }
.formula-box span { display: block; margin-bottom: 8px; color: var(--acid); font-size: 11px; font-weight: 800; letter-spacing: .1em; text-transform: uppercase; }
.formula-box code { font-family: var(--font-geist-mono); font-size: 12px; }
.calculator { min-width: 0; }
.tool-card { margin-bottom: 18px; padding: clamp(22px, 4vw, 38px); border: 1px solid var(--line); border-radius: 3px; background: var(--white); box-shadow: 0 16px 50px rgba(16,42,67,.07); }
.tool-card-heading { display: flex; gap: 18px; margin-bottom: 28px; }
.tool-card-heading > span { display: grid; place-items: center; width: 36px; height: 36px; flex: 0 0 auto; border-radius: 50%; background: var(--acid); font-family: var(--font-geist-mono); font-size: 12px; font-weight: 800; }
.tool-card h2 { margin: 0; font-size: 24px; letter-spacing: -.025em; }
.tool-card-heading p { margin: 7px 0 0; color: var(--muted); line-height: 1.5; }
.tool-grid { display: grid; grid-template-columns: repeat(2, minmax(0,1fr)); gap: 18px; }
.tool-grid label { display: block; color: var(--ink); font-size: 13px; font-weight: 720; }
.tool-grid label:last-child { grid-column: 1 / -1; max-width: calc(50% - 9px); }
.tool-grid input { width: 100%; min-height: 52px; margin-top: 9px; padding: 0 14px; border: 1px solid var(--line); border-radius: 3px; background: #fff; color: var(--ink); }
.tool-grid input:focus { outline: 2px solid rgba(120,184,212,.38); border-color: #256d91; }
.construction-field { display: flex !important; flex-direction: column; }
.checkbox-row { display: flex; align-items: center; gap: 10px; min-height: 52px; margin-top: 9px; padding: 0 14px; border: 1px solid var(--line); border-radius: 3px; background: #fff; font-weight: 600; }
.checkbox-row input { width: 18px; min-height: 18px; margin: 0; accent-color: var(--signal); }
.gauge-result { margin-top: 26px; padding: 22px; border-left: 5px solid var(--acid); background: var(--ink); color: var(--white); }
.gauge-result p { margin: 0 0 8px; color: var(--acid); font-size: 11px; font-weight: 800; letter-spacing: .1em; text-transform: uppercase; }
.gauge-result strong { display: block; font-size: clamp(36px, 5vw, 56px); letter-spacing: -.05em; }
.gauge-result > span { display: block; margin-top: 9px; color: rgba(251,253,255,.7); font-size: 13px; }
.tool-error { margin: 18px 0 0; padding: 13px 15px; border-left: 4px solid #aa2d22; background: #fbe9e7; color: #7a2018; }
.tool-actions { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 26px; }
.tool-actions.compact { margin-top: 14px; }
.tool-button { min-height: 48px; padding: 0 18px; border: 0; border-radius: 4px; font-weight: 750; cursor: pointer; }
.tool-button.primary { background: var(--signal); color: var(--white); }
.tool-button.secondary { background: var(--cream); color: var(--ink); }
.tool-button.text { background: transparent; color: var(--muted); border: 1px solid var(--line); }
.tool-button.pass, .tool-button.fail { min-height: 64px; min-width: 160px; color: white; font-size: 17px; }
.tool-button.pass { background: #18734b; }
.tool-button.fail { background: #aa2d22; }
.tool-button:hover { filter: brightness(1.04); transform: translateY(-1px); }
.impact-heading { display: flex; justify-content: space-between; align-items: end; gap: 20px; padding-bottom: 24px; border-bottom: 1px solid var(--line); }
.impact-heading p { margin: 0 0 8px; color: var(--signal); font-family: var(--font-geist-mono); font-size: 12px; font-weight: 800; text-transform: uppercase; }
.impact-heading span { color: var(--muted); }
.impact-heading strong { font-size: clamp(38px, 6vw, 64px); letter-spacing: -.05em; }
.impact-heading strong span { color: var(--ink); }
.result-buttons { display: flex; gap: 12px; margin-top: 26px; }
.running-result { margin-top: 22px; padding: 15px 17px; border-left: 4px solid #d9a72b; background: #fff4ce; color: #5c470e; line-height: 1.5; }
.result-card { border-left: 5px solid var(--acid); }
.result-card > p { margin: 0 0 10px; color: var(--muted); font-size: 12px; font-weight: 750; text-transform: uppercase; letter-spacing: .1em; }
.result-card h2 { font-size: clamp(28px, 4vw, 44px); }
.history-heading { display: flex; justify-content: space-between; gap: 20px; align-items: baseline; }
.history-heading span { color: var(--muted); font-size: 12px; }
.table-wrap { overflow-x: auto; }
.tool-card table { width: 100%; margin-top: 20px; border-collapse: collapse; }
.tool-card th, .tool-card td { padding: 12px 10px; border-bottom: 1px solid var(--line); text-align: left; }
.tool-card th { color: var(--muted); font-size: 11px; text-transform: uppercase; letter-spacing: .08em; }
.passRow { background: #e8f5ed; }
.failRow { background: #fbe9e7; }
.hidden { display: none !important; }
@media (max-width: 800px) { .calculator-layout { grid-template-columns: 1fr; } .calculator-guide { position: static; } }
@media (max-width: 600px) { .tools-intro { padding-top: 54px; } .tool-grid { grid-template-columns: 1fr; } .tool-grid label:last-child { grid-column: auto; max-width: none; } .result-buttons, .tool-actions { display: grid; grid-template-columns: 1fr; } .tool-button.pass, .tool-button.fail { width: 100%; } .impact-heading { align-items: start; flex-direction: column; } .history-heading { display: block; } .history-heading span { display: block; margin-top: 7px; } .header-actions { gap: 12px; } .tools-header .header-cta { display: none; } }