:root {
    color-scheme: light;
    --ink-950: #163532;
    --ink-800: #2a4d49;
    --ink-650: #56736f;
    --ink-500: #748c88;
    --paper: #ffffff;
    --panel: #ffffff;
    --canvas: #f4faf7;
    --canvas-strong: #e7f4ef;
    --line: #d6e8e1;
    --line-strong: #b9d6cc;
    --teal-800: #0b5f59;
    --teal-700: #0b7067;
    --teal-600: #138279;
    --teal-100: #ddf5ed;
    --blue-700: #2f67a2;
    --blue-100: #eaf4ff;
    --amber-700: #95600a;
    --amber-100: #fff5d9;
    --red-700: #a8423b;
    --red-100: #fff0ed;
    --sun-100: #fff8dc;
    --shadow-sm: 0 1px 3px rgba(34, 88, 78, 0.08);
    --shadow-md: 0 16px 38px rgba(34, 88, 78, 0.1);
    --radius-sm: 0.55rem;
    --radius-md: 0.9rem;
    --radius-lg: 1.2rem;
    --focus: 0 0 0 3px rgba(19, 130, 121, 0.22);
}

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

html {
    min-width: 0;
    background: var(--canvas);
}

body {
    min-height: 100vh;
    margin: 0;
    background:
        radial-gradient(circle at 9% 0%, rgba(255, 218, 119, 0.24), transparent 27rem),
        radial-gradient(circle at 92% 8%, rgba(112, 197, 231, 0.2), transparent 30rem),
        linear-gradient(180deg, #fbfefc 0, #f1faf6 30rem, #f7fbfa 100%);
    color: var(--ink-950);
    font-family: Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    font-size: 1rem;
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
    text-rendering: optimizeLegibility;
}

button,
input {
    font: inherit;
}

button,
summary,
input {
    touch-action: manipulation;
}

button {
    -webkit-tap-highlight-color: transparent;
}

a {
    color: var(--teal-700);
    text-underline-offset: 0.18em;
}

a:hover {
    color: var(--teal-800);
}

:focus-visible {
    outline: 2px solid var(--teal-600);
    outline-offset: 2px;
}

.page-shell {
    width: min(1040px, calc(100% - 2rem));
    min-width: 0;
    margin: 0 auto;
    padding: max(2rem, env(safe-area-inset-top)) max(0px, env(safe-area-inset-right)) max(2.5rem, env(safe-area-inset-bottom)) max(0px, env(safe-area-inset-left));
}

.app-nav {
    display: flex;
    min-height: 42px;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    padding-bottom: 0.75rem;
    border-bottom: 1px solid var(--line);
}

.app-nav__home {
    display: inline-flex;
    min-height: 42px;
    align-items: center;
    gap: 0.55rem;
    color: var(--ink-800);
    font-size: 0.82rem;
    font-weight: 760;
    text-decoration: none;
}

.app-nav__home svg {
    width: 1.15rem;
    height: 1.15rem;
    fill: none;
    stroke: var(--teal-600);
    stroke-linecap: round;
    stroke-linejoin: round;
    stroke-width: 1.8;
}

.app-nav__home:hover {
    color: var(--ink-950);
}

.app-nav__label {
    color: var(--ink-500);
    font-family: "SFMono-Regular", Consolas, monospace;
    font-size: 0.7rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.hero {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    gap: 2rem;
    padding: 1rem 0 1.5rem;
}

.hero-copy {
    max-width: 39rem;
    min-width: 0;
}

.eyebrow,
.section-kicker {
    margin: 0 0 0.35rem;
    color: var(--teal-700);
    font-size: 0.73rem;
    font-weight: 800;
    letter-spacing: 0.12em;
    text-transform: uppercase;
}

h1,
h2,
h3,
p {
    overflow-wrap: anywhere;
}

h1 {
    margin: 0;
    color: var(--teal-800);
    font-size: clamp(2rem, 5vw, 3.35rem);
    line-height: 1.03;
    letter-spacing: -0.045em;
}

.hero-lead {
    max-width: 45rem;
    margin: 0.75rem 0 0;
    color: var(--ink-650);
    font-size: clamp(0.98rem, 2vw, 1.08rem);
}

.hero-actions {
    display: flex;
    flex: 0 0 auto;
    gap: 0.65rem;
}

.install-slot {
    position: relative;
}

.install-guide {
    position: absolute;
    z-index: 20;
    top: calc(100% + 0.55rem);
    right: 0;
    width: min(20rem, calc(100vw - 2rem));
    padding: 0.8rem 0.9rem;
    border: 1px solid var(--line-strong);
    border-radius: var(--radius-md);
    background: var(--paper);
    box-shadow: var(--shadow-md);
    color: var(--ink-650);
    font-size: 0.8rem;
    line-height: 1.45;
}

.install-guide[hidden],
.install-slot[hidden] {
    display: none;
}

.install-guide strong {
    display: block;
    margin-bottom: 0.25rem;
    color: var(--teal-800);
    font-size: 0.85rem;
}

.install-guide p {
    margin: 0;
}

.button,
.text-button,
.segmented-button {
    border: 0;
    cursor: pointer;
    font-weight: 750;
}

.button {
    min-height: 44px;
    padding: 0.7rem 1rem;
    border: 1px solid transparent;
    border-radius: 0.72rem;
    box-shadow: var(--shadow-sm);
    transition: background-color 120ms ease, border-color 120ms ease, color 120ms ease, transform 120ms ease;
}

.button:active {
    transform: translateY(1px);
}

.button--secondary,
.button--ghost {
    border-color: var(--line-strong);
    background: rgba(255, 255, 255, 0.94);
    color: var(--teal-800);
}

.button--primary {
    border-color: var(--teal-700);
    background: var(--teal-700);
    color: #fff;
}

.button--primary:hover {
    border-color: var(--teal-800);
    background: var(--teal-800);
}

.button--icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.45rem;
}

.button--icon svg {
    width: 1.15rem;
    height: 1.15rem;
    flex: 0 0 auto;
    fill: none;
    stroke: currentColor;
    stroke-linecap: round;
    stroke-linejoin: round;
    stroke-width: 2;
}

.button--secondary:hover,
.button--ghost:hover {
    border-color: var(--teal-600);
    background: var(--paper);
}

main {
    display: grid;
    min-width: 0;
    gap: 1rem;
}

main > *,
.analysis-panel,
.interpretation-panel,
.method-panel {
    min-width: 0;
}

.panel {
    border: 1px solid var(--line);
    border-radius: var(--radius-lg);
    background: rgba(255, 255, 255, 0.97);
    box-shadow: var(--shadow-md);
}

.panel {
    padding: clamp(1rem, 2.4vw, 1.55rem);
}

.section-heading {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 1.25rem;
    margin-bottom: 1rem;
}

.section-heading h2 {
    margin: 0;
    color: var(--ink-950);
    font-size: clamp(1.08rem, 2.2vw, 1.38rem);
    line-height: 1.22;
    letter-spacing: -0.02em;
}

.input-affix {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
    min-width: 0;
    overflow: hidden;
    border: 1px solid var(--line-strong);
    border-radius: var(--radius-sm);
    background: var(--paper);
}

.input-affix:focus-within {
    border-color: var(--teal-600);
    box-shadow: var(--focus);
}

.input-affix input {
    width: 100%;
    min-width: 0;
    height: 44px;
    padding: 0.55rem 0.7rem;
    border: 0;
    outline: 0;
    background: transparent;
    color: var(--ink-950);
    font-weight: 750;
    text-align: right;
    font-variant-numeric: tabular-nums;
}

.input-affix > span {
    padding: 0 0.7rem;
    color: var(--ink-500);
    font-size: 0.8rem;
    font-weight: 750;
    white-space: nowrap;
}

input[aria-invalid="true"] {
    color: var(--red-700);
}

.segmented {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0.2rem;
    padding: 0.2rem;
    border: 1px solid var(--line-strong);
    border-radius: var(--radius-sm);
    background: var(--paper);
}

.segmented-button {
    min-height: 44px;
    padding: 0.5rem;
    border-radius: 0.4rem;
    background: transparent;
    color: var(--ink-650);
}

.segmented-button.is-active {
    background: var(--teal-700);
    color: #fff;
}

.selection-count {
    color: var(--teal-700);
    font-size: 0.82rem;
    font-variant-numeric: tabular-nums;
}

.selection-actions {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.text-button {
    min-height: 44px;
    padding: 0.45rem 0.7rem;
    border-radius: 0.45rem;
    background: transparent;
    color: var(--teal-700);
}

.text-button:hover {
    background: var(--teal-100);
}

.element-options {
    display: grid;
    grid-template-columns: repeat(8, minmax(0, 1fr));
    gap: 0.45rem;
}

.element-option {
    display: flex;
    min-width: 0;
    min-height: 44px;
    align-items: center;
    gap: 0.35rem;
    padding: 0.4rem 0.42rem;
    border: 1px solid var(--line);
    border-radius: 0.5rem;
    background: #fbfefc;
    color: var(--ink-800);
    cursor: pointer;
    font-size: 0.78rem;
    font-weight: 750;
}

.element-option span {
    min-width: 0;
    white-space: nowrap;
}

.element-option:has(input:checked) {
    border-color: #9fd3c5;
    background: var(--teal-100);
    color: var(--teal-800);
}

.element-option input {
    width: 1rem;
    height: 1rem;
    margin: 0;
    accent-color: var(--teal-700);
}

.form-status {
    margin-top: 0.85rem;
    padding: 0.75rem 0.85rem;
    border: 1px solid #cfe1ef;
    border-left: 4px solid var(--blue-700);
    border-radius: var(--radius-sm);
    background: var(--blue-100);
    color: var(--ink-650);
    font-size: 0.86rem;
}

.form-status.is-error {
    border-color: #edc5c1;
    border-left-color: var(--red-700);
    background: #fff7f6;
    color: var(--red-700);
}

.form-status[hidden] {
    display: none;
}

.analysis-panel-heading {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    margin-bottom: 0.65rem;
}

.analysis-panel-heading .section-kicker {
    margin: 0;
}

.analysis-panel {
    width: 100%;
}

.analysis-workspace {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    align-items: stretch;
    width: 100%;
    gap: 0.5rem;
}

.workspace-card {
    min-width: 0;
    overflow: hidden;
    border: 1px solid var(--line);
    border-radius: 0.72rem;
    background: #fbfefc;
}

.analysis-toolbar {
    display: grid;
    grid-template-columns: 7.5rem 8rem;
    height: 34px;
    align-items: center;
    flex: 0 0 auto;
    justify-content: flex-end;
    gap: 0.35rem;
}

.drainage-control {
    width: 7.5rem;
    min-width: 0;
}

.input-affix--drainage {
    grid-template-columns: 2.5rem auto;
    height: 34px;
    justify-content: end;
}

.input-affix--drainage input {
    width: 2.5rem;
    height: 32px;
    padding: 0.25rem 0.18rem;
}

.input-affix--drainage > span {
    padding-inline: 0.18rem 0.42rem;
    font-size: 0.68rem;
}

.unit-control {
    width: 8rem;
    min-width: 0;
}

.unit-control .segmented {
    height: 34px;
    padding: 2px;
}

.unit-control .segmented-button {
    height: 28px;
    min-height: 0;
    padding: 0.2rem 0.3rem;
    font-size: 0.72rem;
}

.analysis-input-table-wrap,
.result-table-wrap {
    width: 100%;
    max-width: 100%;
    overflow: hidden;
}

.analysis-input-table {
    width: 100%;
    min-width: 0;
    table-layout: fixed;
    font-size: 0.78rem;
}

.analysis-element-col {
    width: 36%;
}

.analysis-value-col {
    width: 64%;
}

.analysis-column-headings {
    height: 68px;
}

.analysis-column-headings th {
    height: 68px;
    padding: 0.25rem 0.32rem;
    text-align: center;
    text-transform: none;
}

.analysis-header-label,
.analysis-header-label > span,
.analysis-header-label > strong {
    display: block;
}

.analysis-header-label {
    margin-bottom: 0.18rem;
    text-align: left;
}

.analysis-header-label > span {
    color: var(--ink-500);
    font-size: 0.59rem;
    font-weight: 750;
    letter-spacing: 0.04em;
    text-transform: uppercase;
}

.analysis-header-label > strong {
    color: var(--ink-950);
    font-size: 0.82rem;
    letter-spacing: -0.01em;
}

.ec-field {
    display: grid;
    min-width: 0;
    width: 100%;
    margin-inline: 0;
}

.input-affix--ec {
    grid-template-columns: minmax(0, 1fr) auto;
    height: 27px;
    justify-content: start;
}

.input-affix--ec input {
    width: 100%;
    height: 25px;
    padding: 0.16rem 0.2rem;
}

.input-affix--ec > span {
    padding-inline: 0.18rem 0.36rem;
    font-size: 0.66rem;
}

.analysis-input-row th,
.analysis-input-row td {
    height: 30px;
    padding: 0.08rem 0.32rem;
    background: #f6fbf9;
}

.analysis-element {
    color: var(--ink-800);
    font-size: 0.78rem;
    font-weight: 850;
    text-transform: none;
}

.analysis-input-row .concentration-field {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
    width: 100%;
    max-width: 100%;
    height: 26px;
    align-items: center;
    margin-left: 0;
    overflow: hidden;
    border: 1px solid var(--line-strong);
    border-radius: 0.45rem;
    background: var(--paper);
}

.concentration-field:focus-within {
    border-color: var(--teal-600);
    box-shadow: var(--focus);
}

.concentration-input {
    width: 100%;
    min-width: 0;
    height: 24px;
    padding: 0.14rem 0.22rem;
    border: 0;
    border-radius: 0;
    outline: 0;
    background: transparent;
    color: var(--ink-950);
    font-weight: 720;
    text-align: right;
    font-variant-numeric: tabular-nums;
}

.concentration-unit {
    padding: 0 0.34rem 0 0.16rem;
    color: var(--ink-500);
    font-size: 0.62rem;
    font-weight: 750;
    line-height: 1;
    pointer-events: none;
    white-space: nowrap;
}

.concentration-input:focus {
    outline: 0;
}

.empty-state {
    margin: 0.8rem 0 0;
    padding: 1rem;
    border: 1px dashed var(--line-strong);
    border-radius: var(--radius-sm);
    color: var(--ink-500);
    font-size: 0.85rem;
    text-align: center;
}

.analysis-input-table .empty-state {
    margin: 0;
}

.interpretation-list {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0.55rem;
}

.interpretation-item {
    min-width: 0;
    margin: 0;
    padding: 0.7rem 0.75rem;
    border: 1px solid var(--line);
    border-left-width: 4px;
    border-radius: var(--radius-sm);
    background: #fbfefc;
    color: var(--ink-800);
    font-size: 0.84rem;
    line-height: 1.45;
}

.interpretation-item--info {
    border-left: 4px solid var(--blue-700);
    background: var(--blue-100);
}

.interpretation-item--positive {
    border-left: 4px solid var(--teal-600);
    background: #f1fbf7;
}

.interpretation-item--warning {
    border-left: 4px solid var(--amber-700);
    background: var(--sun-100);
}

.interpretation-item--critical {
    border-left: 4px solid var(--red-700);
    background: #fff6f4;
}

.interpretation-element {
    display: inline-flex;
    min-width: 2.2rem;
    min-height: 1.35rem;
    align-items: center;
    justify-content: center;
    margin-block: 0.04rem;
    padding: 0.03rem 0.34rem;
    border: 1px solid hsl(var(--balance-hue) 55% 56%);
    border-radius: 999px;
    background: hsl(var(--balance-hue) 64% 88%);
    color: hsl(var(--balance-hue) 58% 24%);
    font-weight: 850;
    line-height: 1.15;
    vertical-align: baseline;
    white-space: nowrap;
}

.result-table-wrap {
    margin-top: 0;
}

table {
    width: 100%;
    min-width: 640px;
    border-collapse: collapse;
    background: var(--paper);
    font-size: 0.82rem;
    font-variant-numeric: tabular-nums;
}

th,
td {
    padding: 0.42rem 0.65rem;
    border-bottom: 1px solid #e3efeb;
    text-align: right;
    vertical-align: middle;
}

th {
    background: linear-gradient(135deg, #eaf7f2, #eef7fb);
    color: var(--ink-650);
    font-size: 0.69rem;
    letter-spacing: 0.035em;
    line-height: 1.3;
    text-transform: uppercase;
}

th:first-child,
td:first-child {
    text-align: left;
}

tbody tr:last-child th,
tbody tr:last-child td {
    border-bottom: 0;
}

tbody tr:hover {
    filter: saturate(1.08);
}

.result-row {
    --balance-hue: 24;
    background: hsl(var(--balance-hue) 48% 97%);
}

.result-row:not(.result-row--no-data) {
    background: hsl(var(--balance-hue) 48% 97%);
}

.result-row--no-data {
    background: var(--paper);
}

.table-element {
    color: var(--ink-950);
    font-weight: 850;
    white-space: nowrap;
}

.element-badge {
    display: inline-flex;
    width: auto;
    min-width: 3.3rem;
    min-height: 1.35rem;
    align-items: center;
    justify-content: center;
    padding: 0.04rem 0.38rem;
    border: 1px solid hsl(var(--balance-hue) 55% 56%);
    border-radius: 999px;
    background: hsl(var(--balance-hue) 64% 88%);
    color: hsl(var(--balance-hue) 58% 24%);
}

.result-row--no-data .element-badge {
    border-color: var(--line-strong);
    background: var(--canvas-strong);
    color: var(--ink-650);
}

.results-table {
    width: 100%;
    min-width: 0;
    table-layout: fixed;
    font-size: 0.76rem;
}

.results-table th,
.results-table td {
    padding: 0.12rem 0.35rem;
}

.results-column-headings th {
    padding-inline: 0.2rem;
    font-size: 0.6rem;
    letter-spacing: 0.025em;
    text-align: center;
    white-space: normal;
}

.result-row td {
    height: 30px;
}

.results-element-col {
    width: 27%;
}

.results-drained-col,
.results-net-col {
    width: 36.5%;
}

.result-row td:first-child {
    padding-right: 0.2rem;
    text-align: right;
}

.drained-cell,
.net-cell {
    padding-inline: 0.16rem;
    text-align: center;
}

.metric-pill {
    display: inline-flex;
    width: auto;
    min-width: 3.6rem;
    align-items: center;
    justify-content: center;
    min-height: 1.35rem;
    padding: 0.04rem 0.3rem;
    border-radius: 999px;
    font-weight: 800;
    white-space: nowrap;
}

.drained-cell .metric-pill,
.net-cell .metric-pill {
    border: 1px solid hsl(var(--balance-hue) 48% 66%);
    background: hsl(var(--balance-hue) 64% 89%);
    color: hsl(var(--balance-hue) 58% 24%);
}

.formula-block {
    display: grid;
    gap: 0.4rem;
    margin-top: 0;
    padding: 0.85rem;
    border: 1px solid #cddfee;
    border-radius: var(--radius-sm);
    background: linear-gradient(135deg, var(--blue-100), #f0fbf7);
    color: var(--ink-950);
}

.method-summary {
    display: grid;
    grid-template-columns: max-content minmax(0, 1fr);
    align-items: center;
    gap: 0.5rem;
    margin: -0.35rem 0 0.7rem;
    color: var(--ink-650);
    font-size: 0.8rem;
    line-height: 1.4;
}

.method-summary strong {
    padding: 0.24rem 0.5rem;
    border: 1px solid #cddfee;
    border-radius: 999px;
    background: var(--blue-100);
    color: var(--blue-700);
    font-size: 0.7rem;
    font-weight: 800;
    letter-spacing: 0.035em;
    text-transform: uppercase;
    white-space: nowrap;
}

.method-grid {
    display: grid;
    grid-template-columns: minmax(0, 1.2fr) minmax(0, 0.8fr);
    align-items: stretch;
    gap: 0.7rem;
}

.formula-block p {
    display: grid;
    grid-template-columns: 10rem minmax(0, 1fr);
    align-items: baseline;
    gap: 0.8rem;
    margin: 0;
}

.formula-block span {
    color: var(--blue-700);
    font-size: 0.76rem;
    font-weight: 800;
    text-transform: uppercase;
}

.formula-block code {
    min-width: 0;
    overflow-wrap: anywhere;
    color: var(--ink-950);
    font-family: "SFMono-Regular", Consolas, monospace;
    font-size: 0.82rem;
}

.formula-terms {
    display: grid;
    gap: 0;
    margin: 0;
    border: 1px solid var(--line);
    border-radius: var(--radius-sm);
    background: #f8fcfa;
}

.formula-terms > div {
    display: grid;
    grid-template-columns: 6.5rem minmax(0, 1fr);
    gap: 0.6rem;
    padding: 0.42rem 0.6rem;
    border-bottom: 1px solid var(--line);
}

.formula-terms > div:last-child {
    border-bottom: 0;
}

.formula-terms dt,
.formula-terms dd {
    margin: 0;
}

.formula-terms dt {
    color: var(--teal-700);
    font-family: "SFMono-Regular", Consolas, monospace;
    font-size: 0.78rem;
    font-weight: 850;
}

.formula-terms dd {
    color: var(--ink-650);
    font-size: 0.78rem;
}

.method-citations {
    margin: 0.65rem 0 0;
    color: var(--ink-500);
    font-size: 0.73rem;
    line-height: 1.4;
}

.method-note {
    margin: 0.7rem 0 0;
    padding: 0.7rem 0.8rem;
    border: 1px solid var(--line);
    border-left: 4px solid var(--teal-600);
    border-radius: var(--radius-sm);
    background: #f8fcfa;
    color: var(--ink-650);
    font-size: 0.76rem;
    line-height: 1.45;
}

.method-note strong {
    color: var(--teal-800);
}

.report-footer {
    display: flex;
    justify-content: space-between;
    gap: 1rem;
    padding: 1rem 0 0;
    color: var(--ink-500);
    font-size: 0.72rem;
}

.report-footer p {
    margin: 0;
}

.print-only {
    display: none;
}

noscript {
    display: block;
    margin: 1rem;
    padding: 1rem;
    border: 1px solid #edc5c1;
    background: var(--red-100);
    color: var(--red-700);
}

@media (max-width: 980px) {
    .hero {
        align-items: flex-start;
        flex-direction: column;
    }

    .element-options {
        grid-template-columns: repeat(4, minmax(0, 1fr));
    }

}

@media (max-width: 720px) {
    .page-shell {
        width: min(100% - 1rem, 780px);
        padding-top: 0.8rem;
    }

    .hero {
        gap: 1rem;
        padding-bottom: 1rem;
    }

    .hero-actions {
        width: 100%;
        align-items: center;
        justify-content: space-between;
    }

    .hero-actions .button--primary {
        flex: 0 0 auto;
    }

    .section-heading,
    .analysis-panel-heading {
        align-items: flex-start;
        flex-direction: column;
        gap: 0.55rem;
    }

    .analysis-toolbar {
        width: 100%;
        justify-content: flex-end;
    }

    .interpretation-list,
    .method-grid {
        grid-template-columns: 1fr;
    }

    .method-summary {
        grid-template-columns: minmax(0, 1fr);
        align-items: start;
    }

    .method-summary strong {
        justify-self: start;
    }

    .element-options {
        grid-template-columns: repeat(4, minmax(0, 1fr));
    }

    .app-nav__label {
        display: none;
    }

}

@media (display-mode: standalone) {
    .app-nav__label {
        display: none;
    }
}

@media (max-width: 550px) {
    .analysis-workspace {
        grid-template-columns: minmax(0, 1fr);
    }
}

@media (max-width: 480px) {
    body {
        font-size: 0.96rem;
    }

    .panel {
        border-radius: var(--radius-md);
    }

    .hero-actions {
        display: flex;
        flex-wrap: wrap;
    }

    input {
        font-size: 1rem;
    }

    .element-options {
        grid-template-columns: repeat(4, minmax(0, 1fr));
        gap: 0.35rem;
    }

    .element-option {
        min-height: 42px;
        gap: 0.25rem;
        padding: 0.3rem;
        font-size: 0.72rem;
    }

    .element-option input {
        width: 0.9rem;
        height: 0.9rem;
    }

    .analysis-panel {
        padding-inline: 0.75rem;
    }

    .analysis-toolbar {
        grid-template-columns: 7.25rem 7.75rem;
        height: auto;
        justify-content: end;
    }

    .drainage-control,
    .unit-control {
        width: 100%;
    }

    .concentration-input,
    .input-affix--ec input {
        height: 34px;
    }

    .analysis-input-row .concentration-field,
    .input-affix--ec {
        height: 36px;
    }

    .analysis-input-row th,
    .analysis-input-row td,
    .result-row td {
        height: 40px;
    }

    .analysis-column-headings,
    .analysis-column-headings th {
        height: 79px;
    }

    .formula-block p {
        grid-template-columns: 1fr;
        gap: 0.1rem;
    }

}

@media (hover: hover) {
    .analysis-input-row:hover {
        background: rgba(19, 130, 121, 0.06);
    }
}

@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        scroll-behavior: auto !important;
        transition-duration: 0.001ms !important;
        animation-duration: 0.001ms !important;
        animation-iteration-count: 1 !important;
    }
}

@page {
    size: A4 portrait;
    margin: 7mm;
}

@media print {
    :root {
        color-scheme: light;
        --ink-950: #163532;
        --ink-800: #2a4d49;
        --ink-650: #56736f;
        --ink-500: #748c88;
        --paper: #fff;
        --panel: #fff;
        --canvas: #f7fbf9;
        --canvas-strong: #e7f4ef;
        --line: #c9ddd6;
        --line-strong: #afcbc1;
        --teal-800: #0b5f59;
        --teal-700: #0b7067;
        --teal-600: #138279;
        --teal-100: #ddf5ed;
        --blue-700: #2f67a2;
        --blue-100: #eaf4ff;
        --amber-700: #95600a;
        --red-700: #a8423b;
        --red-100: #fff0ed;
        --sun-100: #fff8dc;
    }

    html,
    body {
        min-width: 0;
        background: #fff;
        color: var(--ink-950);
        font-size: 8.5pt;
        -webkit-print-color-adjust: exact;
        print-color-adjust: exact;
    }

    .page-shell {
        width: 100%;
        padding: 0;
    }

    .analysis-panel {
        width: 100%;
    }

    .screen-only {
        display: none !important;
    }

    .print-only {
        display: flex;
    }

    .hero {
        display: block;
        margin-bottom: 2.5mm;
        padding: 0 0 2.5mm;
        border-bottom: 1.5px solid var(--teal-600);
    }

    .eyebrow {
        margin-bottom: 0.8mm;
        font-size: 6.5pt;
    }

    h1 {
        background: none;
        color: var(--teal-800);
        font-size: 20pt;
        letter-spacing: -0.03em;
        -webkit-text-fill-color: var(--teal-800);
    }

    .hero-lead {
        max-width: none;
        margin-top: 1.2mm;
        font-size: 7.8pt;
        line-height: 1.35;
    }

    main {
        gap: 2.5mm;
    }

    .panel {
        background: #fff;
        border-radius: 2.2mm;
        box-shadow: none;
        backdrop-filter: none;
        -webkit-backdrop-filter: none;
        break-inside: avoid;
    }

    .panel {
        padding: 3.2mm;
    }

    .section-heading {
        margin-bottom: 2mm;
    }

    .section-heading h2 {
        font-size: 11pt;
    }

    .section-kicker {
        margin-bottom: 0.7mm;
        font-size: 6.4pt;
    }

    .analysis-panel-heading {
        margin-bottom: 1.5mm;
    }

    .analysis-workspace {
        grid-template-columns: minmax(0, 1fr) minmax(0, 1fr) 35mm;
        gap: 2mm;
    }

    .workspace-card {
        background: #fff;
        border-radius: 1.8mm;
    }

    .analysis-toolbar {
        height: 7mm;
        gap: 1.5mm;
    }

    .drainage-control {
        width: 31mm;
    }

    .input-affix--drainage {
        height: 7mm;
    }

    .input-affix--drainage input {
        height: 6.6mm;
        font-size: 8pt;
    }

    .input-affix--drainage > span {
        font-size: 6pt;
    }

    .analysis-input-table-wrap,
    .result-table-wrap {
        overflow: visible;
        border-radius: 2mm;
    }

    .analysis-input-table {
        width: 100%;
        min-width: 0;
    }

    .analysis-column-headings,
    .analysis-column-headings th {
        height: 12.5mm;
    }

    .analysis-column-headings th {
        padding: 0.8mm 1mm;
    }

    .analysis-header-label > span {
        font-size: 5.4pt;
    }

    .analysis-header-label > strong {
        font-size: 7.5pt;
    }

    .input-affix--ec {
        height: 5mm;
        border-color: var(--line-strong);
    }

    .input-affix--ec input {
        height: 4.6mm;
        padding: 0.3mm 0.5mm;
        font-size: 6.8pt;
    }

    .input-affix--ec > span {
        font-size: 5.6pt;
    }

    .analysis-input-row th,
    .analysis-input-row td {
        background: #fff;
        height: 5.5mm;
        padding: 0.2mm 0.7mm;
    }

    .result-row td {
        height: 5.5mm;
    }

    .result-row,
    .result-row:not(.result-row--no-data),
    .result-row--no-data {
        background: #fff;
    }

    .concentration-input,
    .input-affix input {
        font-size: 7pt;
    }

    .analysis-input-row .concentration-field {
        width: 100%;
        height: 4.2mm;
        border: 0;
        border-radius: 0;
        background: transparent;
    }

    .analysis-input-row .concentration-input {
        height: 4.2mm;
        padding: 0;
    }

    .analysis-element {
        font-size: 6.8pt;
    }

    .concentration-unit {
        padding-right: 0;
        font-size: 5.8pt;
    }

    .interpretation-list {
        grid-template-columns: repeat(3, minmax(0, 1fr));
        gap: 1.5mm;
    }

    .interpretation-item {
        padding: 1.4mm 1.6mm;
        border-left-width: 2.5px;
        font-size: 6.8pt;
        line-height: 1.3;
    }

    .interpretation-element {
        min-width: 5mm;
        min-height: 3.5mm;
        padding: 0 0.8mm;
        font-size: 6.5pt;
    }

    table {
        min-width: 0;
        table-layout: fixed;
        font-size: 7pt;
    }

    thead {
        display: table-header-group;
    }

    tr {
        break-inside: avoid;
    }

    th,
    td {
        padding: 0.8mm 1mm;
    }

    .analysis-element-col { width: 35%; }
    .analysis-value-col { width: 65%; }

    .results-table {
        width: 100%;
        min-width: 0;
    }

    .results-element-col { width: 27%; }
    .results-drained-col,
    .results-net-col { width: 36.5%; }

    .metric-pill {
        width: auto;
        min-width: 0;
        min-height: 3.5mm;
        padding: 0 0.8mm;
        font-size: 6.5pt;
    }

    .element-badge {
        min-width: 8mm;
        min-height: 3.5mm;
        padding: 0 0.8mm;
        font-size: 6.5pt;
    }

    .formula-block {
        gap: 1mm;
        padding: 2mm;
        background: linear-gradient(135deg, var(--blue-100), #f0fbf7);
        color: var(--ink-950);
    }

    .method-summary {
        grid-template-columns: max-content minmax(0, 1fr);
        gap: 1.5mm;
        margin: -0.5mm 0 1.5mm;
        font-size: 6.7pt;
    }

    .method-summary strong {
        padding: 0.5mm 1.2mm;
        font-size: 5.6pt;
    }

    .method-grid {
        gap: 1.5mm;
    }

    .formula-block p {
        grid-template-columns: 34mm minmax(0, 1fr);
        gap: 2mm;
    }

    .formula-block span {
        color: var(--blue-700);
        font-size: 5.8pt;
    }

    .formula-block code {
        color: var(--ink-950);
        font-size: 6.5pt;
    }

    .formula-terms > div {
        grid-template-columns: 25mm minmax(0, 1fr);
        gap: 1.5mm;
        padding: 0.6mm 1mm;
    }

    .formula-terms dt,
    .formula-terms dd {
        font-size: 6.2pt;
    }

    .method-citations {
        margin-top: 1.2mm;
        font-size: 6pt;
    }

    .report-footer {
        padding-top: 2mm;
        border-top: 1px solid var(--line);
        font-size: 6pt;
    }
}