:root {
    color-scheme: light dark;

    --accent: light-dark(#e85d04, #ff8a3d);
    --accent-hover: light-dark(#c94d00, #ff9f5f);
    --accent-soft: light-dark(#fff1e8, #2c1b12);

    --background: light-dark(#f4f6f8, #101419);
    --surface: light-dark(#ffffff, #181e25);
    --surface-muted: light-dark(#eef1f4, #202832);
    --surface-hover: light-dark(#e7ebef, #28323e);

    --text: light-dark(#17202a, #f0f3f6);
    --text-soft: light-dark(#596674, #abb6c2);
    --text-faint: light-dark(#7b8794, #84909d);

    --border: light-dark(#d9dfe6, #303b47);
    --border-strong: light-dark(#c5cdd6, #42505f);

    --success: light-dark(#19743b, #61c981);
    --success-soft: light-dark(#e8f5ec, #152c1d);

    --danger: light-dark(#b42318, #ff7b74);
    --danger-soft: light-dark(#fcebea, #351a19);

    --warning: light-dark(#815700, #f2bd4e);
    --warning-soft: light-dark(#fff5dc, #332810);

    --shadow-low: 0 2px 8px rgba(15, 23, 42, 0.06);
    --shadow-medium: 0 10px 28px rgba(15, 23, 42, 0.1);
    --shadow-high: 0 20px 50px rgba(15, 23, 42, 0.18);

    --radius-small: 4px;
    --radius-medium: 7px;
    --radius-large: 10px;

    --space-1: 0.375rem;
    --space-2: 0.625rem;
    --space-3: 1rem;
    --space-4: 1.5rem;
    --space-5: 2.25rem;
    --space-6: 3.5rem;
    --space-7: 5rem;

    --page-width: 1120px;
    --content-width: 720px;
    --topbar-height: 64px;

    --font-main:
        system-ui,
        -apple-system,
        BlinkMacSystemFont,
        "Segoe UI",
        Arial,
        sans-serif;
}

:root[data-theme="light"] {
    color-scheme: light;
}

:root[data-theme="dark"] {
    color-scheme: dark;
}

* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    scrollbar-gutter: stable;
}

body {
    min-height: 100vh;
    margin: 0;

    display: flex;
    flex-direction: column;

    background: var(--background);
    color: var(--text);

    font-family: var(--font-main);
    font-size: 16px;
    line-height: 1.6;
}

body.is-modal-open {
    overflow: hidden;
}

main,
.site-main {
    flex: 1;
}

button,
input,
textarea,
select {
    font: inherit;
}

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

a {
    color: inherit;
}

img {
    display: block;
    max-width: 100%;
}

h1,
h2,
h3,
p {
    margin-top: 0;
}

h1,
h2,
h3 {
    color: var(--text);
    font-weight: 700;
    line-height: 1.2;
    letter-spacing: -0.025em;
}

h1 {
    margin-bottom: var(--space-3);
    font-size: clamp(2.25rem, 6vw, 4rem);
}

h2 {
    margin-bottom: var(--space-3);
    font-size: clamp(1.5rem, 3vw, 2.2rem);
}

h3 {
    margin-bottom: var(--space-2);
    font-size: 1.05rem;
}

p {
    margin-bottom: var(--space-3);
}

.shell {
    width: min(calc(100% - 2rem), var(--page-width));
    margin-inline: auto;
}

.shell--narrow,
.shell--poll {
    max-width: var(--content-width);
}

.section {
    padding: clamp(3.5rem, 8vw, 6rem) 0;
}

.section--centered {
    min-height: calc(100vh - var(--topbar-height) - 90px);

    display: grid;
    place-items: center;
}

.stack {
    display: grid;
    gap: var(--space-3);
}

.stack--sm {
    gap: var(--space-2);
}

.panel {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-large);
    box-shadow: var(--shadow-low);
}

.eyebrow {
    margin-bottom: var(--space-3);

    color: var(--accent);
    font-size: 0.78rem;
    font-weight: 750;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.muted {
    color: var(--text-soft);
    font-weight: 500;
}

.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;
}

/* Header */

.topbar {
    position: sticky;
    top: 0;
    z-index: 100;

    min-height: var(--topbar-height);

    background: var(--surface);
    border-bottom: 1px solid var(--border);
}

.topbar__inner {
    width: min(calc(100% - 2rem), var(--page-width));
    min-height: var(--topbar-height);
    margin-inline: auto;

    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-3);
}

.topbar__actions,
.topbar__nav {
    display: flex;
    align-items: center;
    gap: var(--space-2);
}

.topbar__nav > a:not(.button) {
    color: var(--text-soft);
    font-size: 0.925rem;
    font-weight: 650;
    text-decoration: none;
}

.topbar__nav > a:not(.button):hover {
    color: var(--text);
}

.brand {
    display: inline-flex;
    align-items: center;
    gap: 0.7rem;

    color: var(--text);
    font-size: 1.1rem;
    font-weight: 700;
    text-decoration: none;
}

.brand__mark {
    width: 2rem;
    height: 2rem;

    display: grid;
    place-items: center;

    background: var(--accent);
    color: #ffffff;

    border-radius: var(--radius-small);

    font-size: 0.72rem;
    font-weight: 800;
    letter-spacing: -0.02em;
}

.brand__name {
    font-size: 1.05rem;
}

/* Buttons */

.button,
.icon-button {
    border: 1px solid transparent;
    border-radius: var(--radius-medium);
    cursor: pointer;

    transition:
        background-color 150ms ease,
        border-color 150ms ease,
        color 150ms ease;
}

.button {
    min-height: 2.75rem;

    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;

    padding: 0.7rem 1rem;

    font-weight: 650;
    line-height: 1.2;
    text-decoration: none;
}

.button:hover {
    text-decoration: none;
}

.button--primary {
    background: var(--accent);
    color: #ffffff;
}

.button--primary:hover {
    background: var(--accent-hover);
}

.button--secondary {
    background: var(--surface);
    color: var(--text);
    border-color: var(--border-strong);
}

.button--secondary:hover {
    background: var(--surface-muted);
}

.button--ghost {
    background: transparent;
    color: var(--text-soft);
}

.button--ghost:hover {
    background: var(--surface-muted);
    color: var(--text);
}

.button--compact {
    min-height: 2.4rem;
    padding: 0.5rem 0.75rem;
    font-size: 0.9rem;
}

.button--large {
    min-height: 3rem;
    padding: 0.8rem 1.2rem;
    font-size: 1rem;
}

.button--full {
    width: 100%;
}

.button:disabled {
    opacity: 0.55;
    cursor: not-allowed;
}

.icon-button {
    width: 2.5rem;
    height: 2.5rem;

    display: inline-grid;
    place-items: center;

    padding: 0;

    background: var(--surface-muted);
    color: var(--text);
    border-color: var(--border);
}

.icon-button:hover {
    background: var(--surface-hover);
}

.button:focus-visible,
.icon-button:focus-visible,
.choice:has(input:focus-visible) {
    outline: 3px solid color-mix(in srgb, var(--accent) 30%, transparent);
    outline-offset: 2px;
}

.button-row,
.hero__actions,
.poll-actions {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--space-2);
}

.poll-actions {
    margin-top: var(--space-4);
}

.poll-actions .button {
    min-width: 150px;
}

/* Landing page */

.product-hero,
.hero {
    padding: clamp(4rem, 9vw, 7rem) 0;
    background: var(--background);
}

.product-hero__layout {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(320px, 0.8fr);
    align-items: center;
    gap: clamp(2.5rem, 7vw, 6rem);
}

.product-hero__content,
.hero__content {
    max-width: 650px;
}

.hero__inner,
.feature-section__inner,
.reliability-section__inner {
    width: min(calc(100% - 2rem), var(--page-width));
    margin-inline: auto;
}

.hero h1 {
    max-width: 720px;
    margin: var(--space-2) 0 var(--space-4);

    font-size: clamp(2.7rem, 7vw, 5rem);
    font-weight: 800;
    line-height: 0.98;
    letter-spacing: -0.055em;
}

.product-hero__lead,
.hero__lead {
    max-width: 650px;
    margin-bottom: var(--space-4);

    color: var(--text-soft);
    font-size: clamp(1.05rem, 2vw, 1.2rem);
    line-height: 1.65;
}

.hero__lead {
    margin-bottom: 0;
}

.hero__actions {
    margin-top: var(--space-5);
}

.product-hero__note {
    margin-top: var(--space-3);
    margin-bottom: 0;

    color: var(--text-faint);
    font-size: 0.9rem;
}

.product-demo {
    padding: clamp(1.25rem, 4vw, 2rem);
    box-shadow: var(--shadow-medium);
}

.product-demo__header {
    margin-bottom: var(--space-4);

    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-3);
}

.product-demo__label {
    color: var(--text-faint);
    font-size: 0.85rem;
    font-weight: 600;
}

.product-demo h2 {
    font-size: clamp(1.35rem, 3vw, 1.75rem);
}

.product-demo > p {
    color: var(--text-soft);
}

.product-summary {
    background: var(--surface);
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
}

.product-summary__layout {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
}

.product-summary__item {
    min-height: 130px;

    display: flex;
    flex-direction: column;
    justify-content: center;

    padding: var(--space-4);
}

.product-summary__item + .product-summary__item {
    border-left: 1px solid var(--border);
}

.product-summary__item strong {
    color: var(--text);
    font-size: 1.35rem;
}

.product-summary__item span {
    margin-top: 0.25rem;
    color: var(--text-soft);
}

.product-details {
    display: grid;
    grid-template-columns: minmax(0, 0.8fr) minmax(0, 1.2fr);
    gap: clamp(2rem, 7vw, 5rem);
}

.product-details__content {
    max-width: 460px;
}

.product-details__content > p:last-child {
    color: var(--text-soft);
}

.steps {
    display: grid;
    gap: 0;

    margin: 0;
    padding: 0;

    list-style: none;
    counter-reset: steps;
}

.step {
    display: grid;
    grid-template-columns: auto 1fr;
    gap: var(--space-3);

    padding: var(--space-4) 0;

    border-top: 1px solid var(--border);
}

.step:last-child {
    border-bottom: 1px solid var(--border);
}

.step__number {
    width: 2rem;
    height: 2rem;

    display: grid;
    place-items: center;

    background: var(--accent-soft);
    color: var(--accent);

    border-radius: var(--radius-small);

    font-size: 0.85rem;
    font-weight: 750;
}

.step p {
    margin-bottom: 0;
    color: var(--text-soft);
}

.feature-section {
    padding: clamp(4rem, 8vw, 6rem) 0;
    background: var(--surface);
}

.section-heading {
    max-width: 680px;
    margin-bottom: var(--space-5);
}

.section-heading h2 {
    margin: var(--space-2) 0 0;
    font-size: clamp(2rem, 4vw, 3rem);
    line-height: 1.1;
    letter-spacing: -0.035em;
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: var(--space-4);
}

.feature-card {
    min-width: 0;
    padding: var(--space-5);

    background: var(--surface-muted);
    border: 1px solid var(--border);
    border-radius: var(--radius-large);
}

.feature-card__icon {
    width: 42px;
    height: 42px;
    margin-bottom: var(--space-4);

    display: grid;
    place-items: center;

    background: var(--surface);
    color: var(--accent);

    border: 1px solid var(--border);
    border-radius: var(--radius-medium);

    font-size: 1.05rem;
}

.feature-card h3 {
    margin: 0 0 var(--space-2);
}

.feature-card p {
    margin: 0;
    color: var(--text-soft);
    line-height: 1.65;
}

.reliability-section {
    padding: clamp(4rem, 8vw, 6rem) 0;

    background: var(--background);
    border-top: 1px solid var(--border);
}

.reliability-section__content {
    max-width: 760px;
}

.reliability-section h2 {
    margin: var(--space-2) 0 var(--space-4);

    font-size: clamp(2rem, 4vw, 3rem);
    line-height: 1.1;
    letter-spacing: -0.035em;
}

.reliability-section p {
    margin: 0 0 var(--space-3);

    color: var(--text-soft);
    font-size: 1.05rem;
    line-height: 1.7;
}

.text-link {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);

    margin-top: var(--space-2);

    color: var(--accent);
    font-weight: 700;
    text-decoration: none;
}

.text-link:hover {
    text-decoration: underline;
}

/* Poll */

.poll-shell {
    width: min(calc(100% - 2rem), var(--content-width));
    margin-inline: auto;
    padding: var(--space-6) 0;
}

.poll-card {
    width: 100%;
    max-width: var(--content-width);
    margin-inline: auto;
    padding: clamp(1.25rem, 4vw, 2rem);

    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-large);
    box-shadow: var(--shadow-low);
}

.poll-card__header {
    margin-bottom: var(--space-4);

    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-3);
}

.poll-card__intro h1 {
    font-size: clamp(1.8rem, 5vw, 2.8rem);
}

.poll-card__intro p {
    color: var(--text-soft);
}

.badge {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;

    padding: 0.35rem 0.65rem;

    border-radius: 999px;

    font-size: 0.76rem;
    font-weight: 700;
}

.badge--open {
    background: var(--success-soft);
    color: var(--success);
}

.badge--scheduled {
    background: var(--warning-soft);
    color: var(--warning);
}

.badge--closed {
    background: var(--surface-muted);
    color: var(--text-soft);
}

.choice-list {
    display: grid;
    gap: var(--space-2);

    margin: 0 0 var(--space-4);
    padding: 0;

    border: 0;
}

.choice {
    position: relative;

    min-height: 3.5rem;

    display: flex;
    align-items: center;
    gap: 0.85rem;

    padding: 0.9rem 1rem;

    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-medium);

    cursor: pointer;

    transition:
        background-color 150ms ease,
        border-color 150ms ease;
}

.choice:hover {
    background: var(--surface-muted);
    border-color: var(--border-strong);
}

.choice input {
    position: absolute;

    width: 1px;
    height: 1px;

    opacity: 0;
    pointer-events: none;
}

.choice__control {
    width: 1.2rem;
    height: 1.2rem;

    flex: 0 0 auto;

    background: var(--surface);
    border: 2px solid var(--text-faint);
    border-radius: 50%;
}

.choice:has(input[type="checkbox"]) .choice__control {
    border-radius: var(--radius-small);
}

.choice:has(input:checked) {
    background: var(--accent-soft);
    border-color: var(--accent);
}

.choice:has(input:checked) .choice__control {
    background: var(--accent);
    border-color: var(--accent);
    box-shadow: inset 0 0 0 3px var(--surface);
}

.choice:has(input:disabled) {
    opacity: 0.65;
    cursor: not-allowed;
}

.choice--example {
    cursor: default;
}

.choice--example:hover {
    background: var(--surface);
    border-color: var(--border);
}

.choice__label {
    font-weight: 600;
}

.field-help {
    margin-bottom: var(--space-3);

    color: var(--text-soft);
    font-size: 0.9rem;
}

.poll-notice,
.message {
    display: flex;
    align-items: flex-start;
    gap: 0.65rem;

    margin-bottom: var(--space-3);
    padding: 0.85rem 1rem;

    background: var(--surface-muted);
    color: var(--text-soft);

    border: 1px solid var(--border);
    border-radius: var(--radius-medium);
}

.poll-notice > i {
    margin-top: 0.2rem;
    color: var(--text-faint);
}

.poll-notice div {
    display: grid;
    gap: 0.15rem;
}

.poll-notice strong {
    color: var(--text);
}

.poll-notice span {
    font-size: 0.9rem;
}

.poll-notice--success {
    background: var(--success-soft);
    border-color: color-mix(
        in srgb,
        var(--success) 30%,
        var(--border)
    );
}

.poll-notice--success > i {
    color: var(--success);
}

.message--error {
    background: var(--danger-soft);
    color: var(--danger);
    border-color: color-mix(
        in srgb,
        var(--danger) 35%,
        var(--border)
    );
}

.message--info {
    background: var(--surface-muted);
    color: var(--text-soft);
}

/* Results */

.results,
.results-view {
    display: grid;
    gap: var(--space-4);
}

.results-view__heading {
    padding-bottom: var(--space-3);
    border-bottom: 1px solid var(--border);
}

.results-view__heading h2 {
    margin-bottom: var(--space-1);
}

.results-view__count {
    margin: 0;
    color: var(--text-soft);
}

.results__summary {
    display: flex;
    align-items: baseline;
    gap: 0.45rem;

    padding: var(--space-3);

    background: var(--surface-muted);
    border-radius: var(--radius-medium);
}

.results__summary strong {
    font-size: 1.5rem;
}

.result {
    display: grid;
    gap: 0.45rem;
}

.result__header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-3);
}

.progress {
    height: 0.6rem;
    overflow: hidden;

    background: var(--surface-muted);
    border-radius: 999px;
}

.progress__bar {
    display: block;
    height: 100%;

    background: var(--accent);
    border-radius: inherit;
}

/* Empty and loading states */

.empty-page {
    min-height: calc(100vh - var(--topbar-height) - 180px);
    padding: var(--space-6) var(--space-3);

    display: grid;
    place-items: center;
}

.empty-state {
    padding: clamp(2rem, 6vw, 4rem);
    text-align: center;
}

.empty-state__icon {
    width: 3.75rem;
    height: 3.75rem;

    display: grid;
    place-items: center;

    margin: 0 auto var(--space-3);

    background: var(--accent-soft);
    color: var(--accent);

    border-radius: 50%;

    font-size: 1.3rem;
}

.empty-state p {
    color: var(--text-soft);
}

.poll-loading {
    display: grid;
    gap: var(--space-3);
}

.skeleton {
    background: var(--surface-muted);
    border-radius: var(--radius-small);
}

.skeleton--badge {
    width: 5rem;
    height: 1.6rem;
}

.skeleton--title {
    width: 68%;
    height: 2.5rem;
}

.skeleton--text {
    width: 90%;
    height: 1rem;
}

.skeleton-list {
    display: grid;
    gap: var(--space-2);
    margin-top: var(--space-2);
}

.skeleton--option {
    height: 3.5rem;
}

/* Content pages */

.content-page {
    width: min(calc(100% - 2rem), 820px);
    margin-inline: auto;
    padding-block: var(--space-7);
}

.content-page__header {
    margin-bottom: var(--space-6);
    padding-bottom: var(--space-5);

    border-bottom: 1px solid var(--border);
}

.content-page__header h1 {
    margin-block: var(--space-2);
}

.content-page__lead {
    max-width: 720px;
    margin: 0;

    color: var(--text-soft);
    font-size: 1.1rem;
    line-height: 1.65;
}

.content-page__updated {
    margin: var(--space-2) 0 0;

    color: var(--text-faint);
    font-size: 0.875rem;
}

.content-page__body {
    display: grid;
    gap: var(--space-6);
}

.content-page__body section {
    display: grid;
    gap: var(--space-2);
}

.content-page__body h2 {
    margin: 0;
    font-size: 1.3rem;
}

.content-page__body p {
    margin: 0;
    color: var(--text-soft);
    line-height: 1.75;
}

/* Footer */

.footer,
.site-footer {
    margin-top: 0;
    padding: 0;

    background: var(--surface);
    color: var(--text-soft);

    border-top: 1px solid var(--border);

    font-size: 0.86rem;
}

.footer__inner,
.site-footer__inner {
    width: min(calc(100% - 2rem), var(--page-width));
    margin-inline: auto;
    padding: var(--space-5) 0;

    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
    gap: var(--space-4);
    align-items: start;
}

.site-footer__brand {
    color: var(--text);
    font-size: 1.05rem;
    font-weight: 800;
    text-decoration: none;
}

.site-footer p {
    max-width: 520px;
    margin: var(--space-1) 0 0;

    color: var(--text-soft);
    font-size: 0.875rem;
    line-height: 1.55;
}

.site-footer__links {
    display: flex;
    flex-wrap: wrap;
    justify-content: flex-end;
    gap: var(--space-3);
}

.site-footer__links a {
    color: var(--text-soft);
    font-size: 0.875rem;
    font-weight: 650;
    text-decoration: none;
}

.site-footer__links a:hover {
    color: var(--text);
}

.site-footer__copyright {
    grid-column: 1 / -1;

    margin-top: var(--space-2) !important;
    padding-top: var(--space-3);

    border-top: 1px solid var(--border);
}

/* Modal */

.modal[hidden] {
    display: none;
}

.modal {
    position: fixed;
    inset: 0;
    z-index: 200;

    display: grid;
    place-items: center;

    padding: 1rem;
}

.modal__backdrop {
    position: absolute;
    inset: 0;

    background: rgba(5, 9, 15, 0.68);
}

.modal__dialog {
    position: relative;

    width: min(100%, 430px);
    padding: 2rem;

    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-large);
    box-shadow: var(--shadow-high);

    text-align: center;
}

.modal__close {
    position: absolute;
    top: 0.7rem;
    right: 0.7rem;
}

.modal__icon {
    width: 3.5rem;
    height: 3.5rem;

    display: grid;
    place-items: center;

    margin: 0 auto var(--space-3);

    background: var(--surface-muted);
    color: var(--text-soft);

    border-radius: 50%;

    font-size: 1.2rem;
}

.modal__icon--success {
    background: var(--success-soft);
    color: var(--success);
}

.modal__icon--error {
    background: var(--danger-soft);
    color: var(--danger);
}

.modal__content p {
    color: var(--text-soft);
}

.modal__actions {
    display: flex;
    justify-content: center;

    margin-top: var(--space-4);
}

/* Responsive */

@media (max-width: 800px) {
    .product-hero__layout,
    .product-details {
        grid-template-columns: 1fr;
    }

    .product-hero {
        padding-top: var(--space-6);
    }

    .product-demo {
        max-width: 620px;
    }

    .product-summary__layout {
        grid-template-columns: 1fr;
    }

    .product-summary__item {
        min-height: auto;
        padding: var(--space-4) 0;
    }

    .product-summary__item + .product-summary__item {
        border-top: 1px solid var(--border);
        border-left: 0;
    }

    .feature-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 680px) {
    .topbar__nav > a:not(.button) {
        display: none;
    }

    .footer__inner,
    .site-footer__inner {
        grid-template-columns: 1fr;
    }

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

    .site-footer__copyright {
        grid-column: auto;
    }
}

@media (max-width: 560px) {
    .shell {
        width: min(calc(100% - 1.25rem), var(--page-width));
    }

    h1 {
        font-size: 2.25rem;
    }

    .button-row,
    .hero__actions,
    .poll-actions {
        align-items: stretch;
        flex-direction: column;
    }

    .button-row .button,
    .hero__actions .button,
    .poll-actions .button {
        width: 100%;
    }

    .product-demo,
    .poll-card {
        padding: 1.1rem;
    }

    .poll-card__header {
        align-items: flex-start;
    }

    .feature-card {
        padding: var(--space-4);
    }
}

@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        scroll-behavior: auto !important;
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}