:root {
    --tools-bg: #f4f8f6;
    --tools-white: #ffffff;
    --tools-ink: #17332a;
    --tools-heading: #0e342b;
    --tools-muted: #60746b;
    --tools-green: #287a57;
    --tools-green-dark: #155b40;
    --tools-green-soft: #e8f4ed;
    --tools-blue: #317fa3;
    --tools-border: #d9e6df;
    --tools-shadow: 0 18px 50px rgba(31, 73, 54, 0.10);
}

* { box-sizing: border-box; }

body.tools-page {
    margin: 0;
    color: var(--tools-ink);
    background: var(--tools-bg);
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Arial, sans-serif;
    font-size: 16px;
    line-height: 1.6;
}

.tools-page a { color: inherit; text-decoration: none; }
.tools-page button, .tools-page input, .tools-page select { font: inherit; }
.tools-container { width: min(92%, 1080px); margin: 0 auto; }

.tools-header {
    position: sticky;
    top: 0;
    z-index: 20;
    border-bottom: 1px solid rgba(13, 98, 91, 0.10);
    background: rgba(255, 255, 255, 0.97);
    backdrop-filter: blur(14px);
}

.tools-header-inner {
    min-height: 72px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
}

.tools-brand { display: flex; flex-direction: column; align-items: center; gap: 2px; }
.tools-brand-main { display: flex; align-items: center; gap: 8px; }
.tools-brand-main img { display: block; width: 112px; height: 44px; object-fit: contain; }
.tools-brand-main > span { color: #082f4a; font-size: 0.92rem; font-weight: 800; letter-spacing: 2.5px; }
.tools-brand > span:last-child { color: #234a3e; font-size: 0.75rem; font-weight: 750; line-height: 1; white-space: nowrap; }
.tools-back { color: var(--tools-green-dark) !important; font-size: 0.88rem; font-weight: 750; }

.tools-intro {
    padding: 52px 0 32px;
    background: radial-gradient(circle at 85% 10%, rgba(118, 189, 72, 0.16), transparent 28%), linear-gradient(135deg, #062f42, #0b514d 62%, #176b63);
}

.tools-intro h1 {
    max-width: 720px;
    margin: 7px 0 12px;
    color: #ffffff;
    font-size: clamp(2.25rem, 5vw, 3.65rem);
    line-height: 1.08;
    letter-spacing: -1.2px;
}

.tools-intro > .tools-container > p:last-child { max-width: 690px; margin: 0; color: #d9ebe4; }

.tools-eyebrow {
    margin: 0;
    color: #a8dc82;
    font-size: 0.76rem;
    font-weight: 850;
    letter-spacing: 1.4px;
}

.tools-workspace { padding: 34px 0 64px; }

.tool-tabs {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 8px;
    margin-bottom: 16px;
    padding: 7px;
    border: 1px solid var(--tools-border);
    border-radius: 15px;
    background: #eaf2ee;
}

.tool-tab {
    min-height: 48px;
    padding: 10px 14px;
    border: 0;
    border-radius: 10px;
    color: #52685e;
    background: transparent;
    font-size: 0.9rem;
    font-weight: 750;
    cursor: pointer;
}

.tool-tab:hover { color: var(--tools-green-dark); }
.tool-tab.is-active { color: #ffffff; background: var(--tools-green); box-shadow: 0 8px 20px rgba(40, 122, 87, 0.22); }

.tool-tab:focus-visible,
.calculator-form input:focus-visible,
.calculator-form select:focus-visible,
.tools-back:focus-visible { outline: 3px solid rgba(49, 127, 163, 0.35); outline-offset: 2px; }

.tool-panel {
    padding: clamp(24px, 5vw, 48px);
    border: 1px solid var(--tools-border);
    border-radius: 22px;
    background: var(--tools-white);
    box-shadow: var(--tools-shadow);
}

.tool-panel[hidden] { display: none; }
.tool-copy { max-width: 700px; margin-bottom: 30px; }

.tool-number {
    display: inline-grid;
    place-items: center;
    width: 38px;
    height: 38px;
    border-radius: 11px;
    color: var(--tools-green-dark);
    background: var(--tools-green-soft);
    font-size: 0.76rem;
    font-weight: 850;
}

.tool-copy h2 { margin: 14px 0 8px; color: var(--tools-heading); font-size: clamp(1.55rem, 3.2vw, 2.2rem); line-height: 1.2; }
.tool-copy p { margin: 0; color: var(--tools-muted); }

.calculator-form { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 18px; }
.calculator-form-small { max-width: 720px; }
.calculator-form .form-wide { grid-column: 1 / -1; }

.calculator-form label {
    display: flex;
    flex-direction: column;
    gap: 7px;
    color: #445d52;
    font-size: 0.88rem;
    font-weight: 750;
}

.input-with-unit {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
    overflow: hidden;
    border: 1px solid #c9d9d1;
    border-radius: 10px;
    background: #ffffff;
}

.input-with-unit:focus-within { border-color: var(--tools-green); box-shadow: 0 0 0 3px rgba(40, 122, 87, 0.11); }

.calculator-form input,
.calculator-form select {
    width: 100%;
    min-height: 48px;
    padding: 11px 13px;
    border: 1px solid #c9d9d1;
    border-radius: 10px;
    color: var(--tools-ink);
    outline: none;
    background: #ffffff;
}

.input-with-unit input { border: 0; border-radius: 0; }
.input-with-unit input:focus-visible { outline: none; }
.input-with-unit > span { padding: 0 13px; color: #687b72; font-size: 0.82rem; font-weight: 700; white-space: nowrap; }

.calculator-results { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 12px; margin-top: 28px; }
.calculator-results-four { grid-template-columns: repeat(4, minmax(0, 1fr)); }

.calculator-results > div {
    min-height: 112px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    padding: 18px;
    border: 1px solid var(--tools-border);
    border-radius: 14px;
    background: #f7faf8;
}

.calculator-results span, .range-result > span { color: var(--tools-muted); font-size: 0.8rem; font-weight: 700; }
.calculator-results strong { color: var(--tools-heading); font-size: clamp(1.25rem, 2.5vw, 1.65rem); }
.calculator-results .result-primary { color: #ffffff; border-color: var(--tools-green); background: var(--tools-green); }
.calculator-results .result-primary span, .calculator-results .result-primary strong { color: #ffffff; }

.range-result {
    max-width: 720px;
    margin-top: 28px;
    padding: 24px;
    border-radius: 16px;
    color: #ffffff;
    background: linear-gradient(135deg, var(--tools-green-dark), var(--tools-green));
}

.range-result > span, .range-result strong, .range-result p { display: block; color: #ffffff; }
.range-result strong { margin: 8px 0 2px; font-size: clamp(1.8rem, 4vw, 2.6rem); }
.range-result p { margin: 0; color: #d9eee3; }
.tool-note { margin: 18px 0 0; color: #6d7f76; font-size: 0.8rem; }

.quick-tips { padding: 60px 0; background: #ffffff; }
.tips-heading { max-width: 690px; margin-bottom: 24px; }
.tips-heading .tools-eyebrow { color: var(--tools-green); }
.tips-heading h2 { margin: 7px 0 0; color: var(--tools-heading); font-size: clamp(1.7rem, 3.5vw, 2.4rem); line-height: 1.2; }
.tips-heading > p:last-child { margin: 8px 0 0; color: var(--tools-muted); }
.tip-reveal { max-width: 760px; }
.tip-reveal > button {
    min-height: 48px;
    padding: 11px 18px;
    border: 1px solid var(--tools-green);
    border-radius: 10px;
    color: #ffffff;
    background: var(--tools-green);
    font-weight: 800;
    cursor: pointer;
}
.tip-reveal > button:hover { background: var(--tools-green-dark); }
.tip-reveal > button:focus-visible { outline: 3px solid rgba(49, 127, 163, 0.35); outline-offset: 2px; }
.daily-tip {
    margin-top: 16px;
    padding: clamp(22px, 4vw, 32px);
    border: 1px solid var(--tools-border);
    border-left: 5px solid var(--tools-green);
    border-radius: 16px;
    background: var(--tools-bg);
    box-shadow: 0 14px 32px rgba(31, 73, 54, 0.07);
}
.daily-tip[hidden] { display: none; }
.daily-tip > span { color: var(--tools-blue); font-size: 0.75rem; font-weight: 850; letter-spacing: 1px; }
.daily-tip h3 { margin: 9px 0 6px; color: var(--tools-heading); font-size: 1.3rem; }
.daily-tip p { margin: 0; color: #4d655a; }
.daily-tip small { display: block; margin-top: 16px; color: var(--tools-muted); font-size: 0.78rem; }

.tools-disclaimer { padding: 24px 0; border-top: 1px solid var(--tools-border); background: #edf4f1; }
.tools-disclaimer .tools-container { display: grid; grid-template-columns: auto 1fr; gap: 18px; align-items: baseline; }
.tools-disclaimer strong { color: var(--tools-heading); }
.tools-disclaimer p { margin: 0; color: var(--tools-muted); font-size: 0.82rem; }

.tools-footer { color: #cfe0d8; background: #173b30; }
.tools-footer .tools-container { min-height: 92px; display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 16px 28px; font-size: 0.8rem; }
.tools-footer a { color: #ffffff; font-weight: 700; }

@media (max-width: 850px) {
    .calculator-results-four { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 640px) {
    .tools-brand-main img { width: 88px; height: 36px; }
    .tools-brand-main > span { font-size: 0.78rem; letter-spacing: 1.8px; }
    .tools-brand > span:last-child { font-size: 0.75rem; }
    .tools-intro { padding: 40px 0 26px; }
    .tools-workspace { padding: 24px 0 50px; }
    .tool-tabs { grid-template-columns: 1fr; }
    .calculator-form, .calculator-results, .calculator-results-four, .tools-disclaimer .tools-container { grid-template-columns: 1fr; }
    .calculator-results > div { min-height: 96px; }
    .quick-tips { padding: 48px 0; }
    .tools-footer .tools-container { padding: 22px 0; flex-direction: column; align-items: flex-start; }
}