/* signalsystems.com - design direction A "Open Air".
   White, generous space, Inter Tight + JetBrains Mono, one green accent from
   the Continuum logo. Product mockups are plain HTML/CSS (.mock*). */

:root {
    --ink: #0b0d0c;
    --muted: #535b57; /* 7:1 on white */
    --line: #e4e9e5;
    --soft: #f5f7f5;
    --green: #62a430; /* logo green: large text and decoration only */
    --green-ink: #3a7114; /* accessible green for small text (5.8:1) */
    --green-soft: #eef6e7;
    --warm: #fff3dc;
    --warm-ink: #7f5300;
    --blue: #e8f0fb;
    --blue-ink: #234f8c;
    --bg: #fff;
    --radius: 20px;
    --wrap: 1200px;
    --gutter: 40px;
    --sans: 'Inter Tight', system-ui, -apple-system, 'Segoe UI', sans-serif;
    --mono: 'JetBrains Mono', ui-monospace, 'SFMono-Regular', Menlo, monospace;
    --shadow: 0 30px 80px -30px rgba(11, 13, 12, 0.22);
    color-scheme: light;
}

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

html {
    -webkit-text-size-adjust: 100%;
    scroll-padding-top: 24px;
}

body {
    margin: 0;
    font-family: var(--sans);
    color: var(--ink);
    background: var(--bg);
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
}

@media (prefers-reduced-motion: no-preference) {
    html {
        scroll-behavior: smooth;
    }
}

img {
    max-width: 100%;
    height: auto;
}

h1,
h2,
h3,
p,
ul,
dl,
dd,
figure {
    margin: 0;
}

a {
    color: inherit;
}

:focus-visible {
    outline: 3px solid var(--green-ink);
    outline-offset: 3px;
    border-radius: 6px;
}

.skip {
    position: absolute;
    left: 16px;
    top: -60px;
    z-index: 10;
    background: var(--ink);
    color: #fff;
    padding: 10px 16px;
    border-radius: 999px;
    text-decoration: none;
    font-weight: 600;
}

.skip:focus {
    top: 12px;
}

.wrap {
    max-width: var(--wrap);
    margin: 0 auto;
    padding: 0 var(--gutter);
}

.mono {
    font-family: var(--mono);
}

.muted {
    color: var(--muted);
}

.small {
    font-size: 13px;
}

/* ---------- Header ---------- */

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
    min-height: 84px;
}

.brand {
    display: flex;
    align-items: center;
    gap: 12px;
    text-decoration: none;
}

.brand img {
    height: 44px;
    width: auto;
    display: block;
}

.brand-by {
    font-family: var(--mono);
    font-size: 12px;
    color: var(--muted);
    letter-spacing: 0.02em;
    padding-top: 6px;
}

.site-nav ul {
    display: flex;
    gap: 36px;
    list-style: none;
    padding: 0;
}

.site-nav a {
    font-size: 15px;
    color: var(--muted);
    text-decoration: none;
    padding: 6px 0;
}

.site-nav a:hover,
.site-nav a[aria-current='page'] {
    color: var(--ink);
}

.site-nav a[aria-current='page'] {
    box-shadow: inset 0 -2px 0 var(--green);
}

.header-cta {
    font-size: 15px;
    font-weight: 600;
    color: var(--ink);
    text-decoration: none;
    border: 1px solid var(--ink);
    border-radius: 999px;
    padding: 10px 20px;
    white-space: nowrap;
}

.header-cta:hover {
    background: var(--ink);
    color: #fff;
}

/* ---------- Type ---------- */

.eyebrow,
.num {
    font-family: var(--mono);
    font-size: 13px;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--green-ink);
}

.num {
    text-transform: none;
    letter-spacing: 0.02em;
}

h1 {
    font-size: clamp(44px, 7.4vw, 92px);
    line-height: 0.98;
    letter-spacing: -0.045em;
    font-weight: 600;
    margin-top: 28px;
    text-wrap: balance;
}

h1 em,
h2 em {
    font-style: normal;
    color: var(--green);
}

h2 {
    font-size: clamp(34px, 4.6vw, 56px);
    letter-spacing: -0.04em;
    line-height: 1.04;
    font-weight: 600;
    max-width: 780px;
    margin-top: 14px;
    text-wrap: balance;
}

.eyebrow + h2 {
    margin-top: 14px;
}

h3 {
    font-size: 21px;
    letter-spacing: -0.02em;
    line-height: 1.25;
    font-weight: 600;
}

.lede {
    font-size: clamp(18px, 1.6vw, 21px);
    line-height: 1.55;
    color: var(--muted);
    max-width: 660px;
    margin: 32px auto 0;
}

.section-body,
.closing-text {
    color: var(--muted);
    font-size: 17px;
    line-height: 1.65;
    margin-top: 22px;
    max-width: 620px;
}

.section-body p + p,
.lede p + p,
.closing-text p + p {
    margin-top: 14px;
}

.section-body a,
.grid-item a,
.points a,
.prose a,
.contact-card a,
.form-note a {
    color: var(--green-ink);
    text-underline-offset: 3px;
}

/* ---------- Buttons ---------- */

.btns {
    display: flex;
    flex-wrap: wrap;
    gap: 14px;
    justify-content: center;
    margin-top: 44px;
}

.btn {
    display: inline-block;
    font: inherit;
    font-weight: 600;
    font-size: 16px;
    padding: 16px 28px;
    border-radius: 999px;
    text-decoration: none;
    border: 0;
    cursor: pointer;
}

.btn.primary {
    background: var(--ink);
    color: #fff;
}

.btn.primary:hover {
    background: #26302b;
}

.btn.ghost {
    color: var(--ink);
    background: var(--soft);
}

.btn.ghost:hover {
    background: var(--line);
}

/* ---------- Hero ---------- */

.hero {
    padding: 104px 0 96px;
    text-align: center;
}

.hero-home {
    padding-bottom: 0;
}

.hero-text {
    max-width: 1000px;
    margin: 0 auto;
}

.hero-visual {
    margin: 72px auto 0;
    max-width: 680px;
    text-align: left;
}

.notfound {
    padding: 140px 0 160px;
}

/* Home stage: three mockups over two soft arcs. */
.stage {
    position: relative;
    max-width: 1120px;
    height: 600px;
    margin: 56px auto 0;
    overflow: hidden;
    text-align: left;
}

.arc {
    position: absolute;
    left: 0;
    right: 0;
    top: -40px;
    margin: auto;
    width: 900px;
    height: 900px;
    border-radius: 50%;
    border: 2px solid var(--line);
}

.arc-green {
    width: 700px;
    height: 700px;
    top: 60px;
    border-color: #d8eacb;
}

.stage-sheet {
    position: absolute;
    left: 50%;
    top: 70px;
    width: 640px;
    transform: translateX(-50%);
}

.stage-kiosk {
    position: absolute;
    left: 20px;
    top: 250px;
    width: 250px;
}

.stage-phone {
    position: absolute;
    right: 10px;
    top: 170px;
    width: 230px;
}

/* ---------- Sections ---------- */

.section {
    padding: 120px 0;
    border-top: 1px solid var(--line);
}

.hero + .section,
.hero + .section-first {
    border-top: 1px solid var(--line);
}

.section-band {
    border-top: 0;
    padding-top: 0;
}

.section-text .solo,
.solo {
    max-width: 780px;
}

.grid3 {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 48px 56px;
    margin-top: 64px;
}

.section-intro {
    margin-top: 20px;
}

.grid-item h3 {
    margin: 14px 0 10px;
}

.grid-item p,
.points p {
    color: var(--muted);
    line-height: 1.6;
    font-size: 16px;
}

.grid-item p + p {
    margin-top: 10px;
}

.split {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.05fr);
    gap: 80px;
    align-items: center;
}

.split.flip .split-text {
    order: 2;
}

.points {
    list-style: none;
    padding: 0;
    margin-top: 36px;
    display: grid;
    gap: 22px;
}

.points li {
    padding-left: 22px;
    position: relative;
}

.points li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 9px;
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--green);
}

.points h3 {
    font-size: 17px;
    letter-spacing: -0.01em;
    margin-bottom: 4px;
}

.section-image {
    border-radius: var(--radius);
    display: block;
    width: 100%;
}

.band {
    background: var(--soft);
    border-radius: 28px;
    padding: 72px;
    display: grid;
    grid-template-columns: 1.05fr 1fr;
    gap: 60px;
    align-items: center;
}

.band h2 {
    font-size: clamp(32px, 3.6vw, 44px);
}

.band-list {
    list-style: none;
    padding: 0;
}

.band-list li {
    padding: 17px 0;
    border-bottom: 1px solid var(--line);
    display: flex;
    justify-content: space-between;
    gap: 16px;
    font-size: 17px;
}

.band-list li:last-child {
    border-bottom: 0;
}

.band-name {
    font-weight: 500;
}

.band-detail {
    font-family: var(--mono);
    color: var(--muted);
    font-size: 13px;
    text-align: right;
    padding-top: 3px;
}

.closing {
    text-align: center;
}

.closing-card h2 {
    margin: 0 auto;
}

.closing-text {
    margin: 22px auto 0;
}

.prose {
    max-width: 760px;
}

.prose h2 {
    font-size: 30px;
    letter-spacing: -0.025em;
    margin-top: 48px;
}

.prose h2:first-child {
    margin-top: 0;
}

.prose p,
.prose li {
    color: var(--muted);
    font-size: 17px;
    line-height: 1.7;
}

.prose p {
    margin-top: 16px;
}

.prose strong {
    color: var(--ink);
    font-weight: 600;
}

.prose ul {
    margin-top: 16px;
    padding-left: 22px;
}

.prose li + li {
    margin-top: 8px;
}

/* ---------- Contact ---------- */

.contact-grid {
    display: grid;
    grid-template-columns: minmax(0, 1.5fr) minmax(0, 1fr);
    gap: 64px;
    align-items: start;
}

.form-card h2,
.contact-card h2 {
    margin-top: 0;
}

.demo-form {
    margin-top: 36px;
    display: grid;
    gap: 20px;
}

.field {
    display: grid;
    gap: 8px;
}

.field-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

.field label {
    font-weight: 500;
    font-size: 15px;
}

.optional {
    color: var(--muted);
    font-weight: 400;
}

.field input,
.field select,
.field textarea {
    font: inherit;
    font-size: 16px;
    color: var(--ink);
    background: #fff;
    border: 1px solid #c9d1cc;
    border-radius: 12px;
    padding: 13px 14px;
    width: 100%;
}

.field textarea {
    resize: vertical;
}

.field input:focus-visible,
.field select:focus-visible,
.field textarea:focus-visible {
    outline: 3px solid var(--green-ink);
    outline-offset: 1px;
    border-color: var(--green-ink);
}

.demo-form .btn {
    justify-self: start;
    margin-top: 6px;
}

.form-note {
    color: var(--muted);
    font-size: 14px;
}

.contact-card {
    background: var(--soft);
    border-radius: 24px;
    padding: 40px;
}

.h-small {
    font-family: var(--mono);
    font-size: 13px;
    font-weight: 500;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--green-ink);
}

.contact-card p {
    margin: 8px 0 28px;
    font-size: 17px;
    line-height: 1.6;
}

.contact-card p:last-child {
    margin-bottom: 0;
}

/* ---------- Footer ---------- */

.site-footer {
    border-top: 1px solid var(--line);
    padding: 72px 0 48px;
    color: var(--muted);
    font-size: 15px;
}

.footer-grid {
    display: grid;
    grid-template-columns: 1.4fr 1fr 1fr;
    gap: 48px;
}

.site-footer img {
    height: 38px;
    width: auto;
}

.footer-address {
    margin-top: 18px;
    line-height: 1.7;
}

.footer-head {
    font-family: var(--mono);
    font-size: 12px;
    font-weight: 500;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--ink);
    margin: 0 0 14px;
}

.site-footer ul {
    list-style: none;
    padding: 0;
    display: grid;
    gap: 10px;
}

.site-footer a {
    text-decoration: none;
}

.site-footer a:hover {
    color: var(--ink);
    text-decoration: underline;
}

.footer-legal {
    margin-top: 56px;
    padding-top: 24px;
    border-top: 1px solid var(--line);
    font-size: 14px;
}

/* ---------- Product mockups ---------- */

.mock {
    font-size: 14px;
    text-align: left;
    line-height: 1.4;
}

.card {
    background: #fff;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    padding: 26px;
}

.mock-head {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    gap: 12px;
    font-size: 15px;
}

.mock-title {
    font-weight: 600;
}

.mock-head .mono {
    font-size: 12px;
    white-space: nowrap;
}

.mock table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 16px;
}

.mock th,
.mock td {
    padding: 11px 8px;
    border-bottom: 1px solid var(--line);
    text-align: left;
    white-space: nowrap;
}

.mock tr:last-child td {
    border-bottom: 0;
}

.mock th {
    font-weight: 500;
    color: var(--muted);
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 0.06em;
}

.mock .r {
    text-align: right;
}

.mock td.mono {
    font-size: 13px;
}

.mock .total td {
    font-weight: 600;
    border-top: 1px solid var(--ink);
}

.row-off td {
    background: #f3f7fc;
}

.pill {
    display: inline-block;
    font-size: 12px;
    padding: 3px 10px;
    border-radius: 999px;
    background: var(--green-soft);
    color: var(--green-ink);
    white-space: nowrap;
}

.pill-warm {
    background: var(--warm);
    color: var(--warm-ink);
}

.pill-blue {
    background: var(--blue);
    color: var(--blue-ink);
}

.pill-gray {
    background: var(--soft);
    color: var(--muted);
}

.exc {
    display: inline-block;
    font-family: var(--mono);
    font-size: 11px;
    font-weight: 500;
    color: #9a2b1d;
    background: #fdecea;
    border-radius: 6px;
    padding: 1px 6px;
    margin-right: 6px;
    min-width: 34px;
    text-align: center;
}

.exc-soft {
    color: var(--warm-ink);
    background: var(--warm);
}

/* Kiosk */
.mock-kiosk {
    padding: 22px;
}

.kiosk-clock {
    font-size: 46px;
    font-weight: 600;
    letter-spacing: -0.03em;
    line-height: 1.1;
    margin-top: 4px;
}

.kiosk-clock span,
.phone-clock span {
    font-size: 15px;
    font-weight: 500;
    letter-spacing: 0;
    margin-left: 6px;
    color: var(--muted);
}

.kiosk-pin {
    display: flex;
    gap: 10px;
    margin: 12px 0 14px;
}

.kiosk-pin i {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    border: 2px solid #c9d1cc;
}

.kiosk-pin i.on {
    background: var(--ink);
    border-color: var(--ink);
}

.kiosk-pad {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 8px;
}

.kiosk-pad b {
    text-align: center;
    padding: 10px 0;
    border-radius: 10px;
    background: var(--soft);
    font-weight: 500;
}

.kiosk-pad .k-soft {
    font-size: 12px;
    color: var(--muted);
    padding-top: 12px;
}

.kiosk-pad .k-go {
    background: var(--green);
    color: #fff;
    font-size: 13px;
    padding-top: 11px;
    font-weight: 600;
}

/* Phone */
.mock-phone {
    background: var(--ink);
    color: #fff;
    border-radius: 34px;
    padding: 22px 18px 16px;
    box-shadow: var(--shadow);
    min-height: 400px;
    display: flex;
    flex-direction: column;
}

.phone-top {
    display: flex;
    justify-content: space-between;
    font-size: 13px;
    color: rgba(255, 255, 255, 0.72);
}

.phone-date {
    margin-top: 40px;
    font-size: 13px;
    color: rgba(255, 255, 255, 0.72);
}

.phone-clock {
    font-size: 48px;
    font-weight: 600;
    letter-spacing: -0.03em;
    margin-top: 2px;
}

.phone-clock span {
    color: rgba(255, 255, 255, 0.72);
}

.phone-punch {
    margin-top: auto;
    background: var(--green);
    color: #fff;
    text-align: center;
    border-radius: 16px;
    padding: 18px;
    font-weight: 600;
    font-size: 17px;
}

.phone-tabs {
    display: flex;
    justify-content: space-between;
    margin-top: 18px;
    font-size: 11px;
    color: rgba(255, 255, 255, 0.6);
}

.phone-tabs .on {
    color: #fff;
}

.split-visual .mock-phone,
.hero-visual .mock-phone {
    max-width: 260px;
    margin: 0 auto;
}

.split-visual .mock-kiosk {
    max-width: 340px;
    margin: 0 auto;
}

/* Schedule */
.cal {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    gap: 6px;
    margin-top: 18px;
}

.cal-day {
    border: 1px solid var(--line);
    border-radius: 10px;
    padding: 8px 6px;
    min-height: 92px;
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.cal-day.off {
    background: var(--soft);
}

.cal-d {
    font-size: 11px;
    color: var(--muted);
}

.cal-s {
    font-size: 12px;
    font-weight: 600;
    line-height: 1.3;
}

.cal-s em {
    display: block;
    font-style: normal;
    font-family: var(--mono);
    font-size: 10px;
    margin-top: 2px;
}

.cal-s.dim,
.cal-key .dim {
    color: #7b847f;
    font-weight: 400;
}

.cal-day.set {
    border-color: var(--green);
    background: var(--green-soft);
}

.cal-key {
    display: flex;
    flex-wrap: wrap;
    gap: 6px 18px;
    margin-top: 14px;
    font-size: 12px;
    color: var(--muted);
}

.cal-key b {
    color: var(--ink);
}

/* Exceptions */
.mock-exc ul,
.mock-devices ul {
    list-style: none;
    padding: 0;
    margin-top: 14px;
}

.mock-exc li {
    display: flex;
    align-items: flex-start;
    gap: 8px;
    padding: 12px 0;
    border-bottom: 1px solid var(--line);
}

.mock-exc li:last-child,
.mock-devices li:last-child {
    border-bottom: 0;
}

.mock-exc li .exc {
    margin-top: 2px;
}

.mock-exc small {
    display: block;
    color: var(--muted);
    font-size: 12px;
    margin-top: 2px;
}

/* Pay policy */
.mock-policy dl {
    margin-top: 14px;
}

.mock-policy dl div {
    display: flex;
    justify-content: space-between;
    gap: 16px;
    padding: 11px 0;
    border-bottom: 1px solid var(--line);
}

.mock-policy dl div:last-child {
    border-bottom: 0;
}

.mock-policy dt {
    color: var(--muted);
}

.mock-policy dd {
    text-align: right;
    font-weight: 500;
}

/* Devices */
.mock-device-pair {
    display: grid;
    gap: 20px;
    max-width: 440px;
    margin: 0 auto;
}

.mock-claim {
    text-align: center;
    width: 78%;
}

.claim-code {
    font-size: 34px;
    font-weight: 500;
    letter-spacing: 0.06em;
    margin: 8px 0;
}

.mock-devices {
    width: 86%;
    justify-self: end;
}

.mock-devices li {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 11px 0;
    border-bottom: 1px solid var(--line);
}

/* ---------- Responsive ---------- */

@media (max-width: 1100px) {
    .stage {
        height: 560px;
    }

    .stage-sheet {
        width: 560px;
    }

    .stage-kiosk {
        left: 0;
        width: 220px;
    }

    .stage-phone {
        right: 0;
        width: 200px;
    }

    .split {
        gap: 56px;
    }
}

@media (max-width: 960px) {
    :root {
        --gutter: 28px;
    }

    .site-nav ul {
        gap: 24px;
    }

    .brand-by {
        display: none;
    }

    .section {
        padding: 88px 0;
    }

    .split {
        grid-template-columns: 1fr;
        gap: 48px;
    }

    .split.flip .split-text {
        order: 0;
    }

    .split-visual {
        max-width: 640px;
    }

    .band {
        grid-template-columns: 1fr;
        padding: 48px;
        gap: 32px;
    }

    .grid3 {
        grid-template-columns: 1fr 1fr;
    }

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

    /* The stage becomes a simple column of mockups. */
    .stage {
        height: auto;
        overflow: visible;
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: 20px;
        padding-bottom: 72px;
    }

    .arc {
        display: none;
    }

    .stage-sheet,
    .stage-kiosk,
    .stage-phone {
        position: static;
        transform: none;
        width: auto;
    }

    .stage-sheet {
        grid-column: 1 / -1;
    }

    .stage-phone .mock-phone {
        min-height: 100%;
    }
}

@media (max-width: 720px) {
    :root {
        --gutter: 16px;
    }

    .header-inner {
        flex-wrap: wrap;
        gap: 0 16px;
        padding-top: 14px;
    }

    .brand img {
        height: 36px;
    }

    .header-cta {
        font-size: 14px;
        padding: 8px 16px;
    }

    .site-nav {
        order: 3;
        width: 100%;
        margin-top: 6px;
        border-top: 1px solid var(--line);
    }

    .site-nav ul {
        gap: 4px 22px;
        flex-wrap: wrap;
        padding: 10px 0;
    }

    .site-nav a {
        display: inline-block;
        padding: 6px 0;
    }

    .hero {
        padding: 56px 0 64px;
    }

    .hero-home {
        padding-bottom: 0;
    }

    h1 {
        margin-top: 20px;
    }

    .btns {
        margin-top: 32px;
    }

    .btn {
        padding: 14px 22px;
    }

    .section {
        padding: 64px 0;
    }

    .section-band {
        padding-top: 0;
    }

    .grid3 {
        grid-template-columns: 1fr;
        gap: 36px;
        margin-top: 40px;
    }

    .band {
        padding: 32px 22px;
        border-radius: 22px;
    }

    .band-list li {
        font-size: 16px;
    }

    .card {
        padding: 20px;
    }

    .mock th,
    .mock td {
        padding: 10px 5px;
    }

    .hide-sm {
        display: none;
    }

    .cal {
        grid-template-columns: repeat(4, 1fr);
    }

    .stage {
        gap: 12px;
        padding-bottom: 56px;
    }

    .stage .mock-kiosk {
        padding: 14px;
    }

    .stage .kiosk-clock,
    .stage .phone-clock {
        font-size: 30px;
    }

    .stage .kiosk-pad {
        gap: 5px;
    }

    .stage .kiosk-pad b {
        padding: 6px 0;
        font-size: 13px;
    }

    .stage .kiosk-pad .k-soft,
    .stage .kiosk-pad .k-go {
        font-size: 10px;
        padding-top: 8px;
    }

    .stage .mock-phone {
        border-radius: 26px;
        padding: 16px 14px 14px;
        min-height: 0;
        height: 100%;
    }

    .stage .phone-top span:last-child,
    .stage .phone-tabs {
        display: none;
    }

    .stage .phone-date {
        margin-top: 20px;
        font-size: 12px;
    }

    .stage .phone-punch {
        padding: 12px;
        font-size: 15px;
    }

    .field-row {
        grid-template-columns: 1fr;
    }

    .contact-card {
        padding: 28px 22px;
    }

    .footer-grid {
        grid-template-columns: 1fr;
        gap: 36px;
    }

    .mock-claim,
    .mock-devices {
        width: 100%;
    }
}