:root,
[data-theme="dark"] {
    --bg: #14161a;
    --panel: #1d2026;
    --panel2: #232730;
    --line: #2e333d;
    --fg: #e8e6e0;
    --fg-dim: #9aa0ab;
    --fg-faint: #6b7280;
    --amber: #e8a33d;
    --amber-dim: #a97a2f;
    --green: #4ade80;
    --red: #f87171;
    --radius: 14px;
    --wave-bg: #17191e;
    --wave-stroke: #8a6a33;
    --led: #ff2a1a;
    --led-dim: rgba(255, 42, 26, 0.10);
}

[data-theme="light"] {
    --bg: #e9e2d3;
    --panel: #f5efe2;
    --panel2: #eae2cf;
    --line: #d8cdb4;
    --fg: #2b2822;
    --fg-dim: #6b6252;
    --fg-faint: #87532c;
    --amber: #b3720f;
    --amber-dim: #8a5a0e;
    --green: #1a7f43;
    --red: #b3372c;
    --wave-bg: #ddd4bf;
    --wave-stroke: #a5702a;
    --led: #ff2a1a;
    --led-dim: rgba(255, 42, 26, 0.10);
}

body {
    transition: background .25s, color .25s;
}

.card,
.chip,
.hint,
select,
.sel,
input.sel,
.meter,
.lockwrap,
canvas.wave {
    transition: background .25s, border-color .25s;
}

/* ---- theme toggle (iPhone-style) ---- */
.themeswitch {
    position: fixed;
    top: 14px;
    right: 14px;
    z-index: 100;
    width: 54px;
    height: 32px;
    border-radius: 16px;
    background: var(--panel2);
    border: 1px solid var(--line);
    cursor: pointer;
    padding: 0;
    box-shadow: inset 0 1px 3px rgba(0, 0, 0, .25);
}

.themeswitch .knob {
    position: absolute;
    top: 2px;
    left: 2px;
    width: 26px;
    height: 26px;
    border-radius: 50%;
    background: linear-gradient(145deg, #fdf6e3, #d8cdb4);
    box-shadow: 0 1px 3px rgba(0, 0, 0, .4);
    transition: left .18s cubic-bezier(.3, .9, .4, 1.2), background .18s;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 13px;
}

[data-theme="dark"] .themeswitch .knob {
    left: 24px;
    background: linear-gradient(145deg, #3a4150, #232730);
}

.themeswitch .knob::after {
    content: "\2600";
    color: #7a5a10;
}

/* sun in light */
[data-theme="dark"] .themeswitch .knob::after {
    content: "\263D";
    color: #cfd6e0;
}

/* moon in dark */
/* ---- meter face (raster art + overlay) ---- */
.meterface {
    position: relative;
    max-width: 430px;
    margin: 14px auto 0;
}

.meterface .face-img {
    width: 100%;
    display: block;
    filter: drop-shadow(0 0 8px rgba(0, 0, 0, 0.75));
}

[data-theme="light"] .meterface .face-img {
    filter: drop-shadow(0 0 8px rgba(0, 0, 0, 0.75));
}

[data-theme="dark"] .face-img.light-only {
    display: none;
}

[data-theme="light"] .face-img.dark-only {
    display: none;
}

.meterface svg.gauge-svg {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
}

/* 7-seg LED note window, recessed into the face */
.ledwin {
    position: absolute;
    left: 41.8%;
    top: 78%;
    width: 15%;
    height: 11%;
    background: linear-gradient(180deg, #100604, #1c0c06);
    border-radius: 6px;
    border: 1px solid rgba(0, 0, 0, .9);
    box-shadow: inset 0 3px 7px rgba(0, 0, 0, .95), inset 0 -1px 1px rgba(255, 180, 90, .10), 0 2px 3px rgba(0, 0, 0, .7);
    display: flex;
    align-items: center;
    justify-content: center;
}

.ledwin svg {
    width: 100%;
    height: 84%;
}

.ledseg {
    filter: drop-shadow(0 0 0.8px var(--led));
}

.ledseg {
    fill: var(--led);
}

.ledseg.off {
    fill: var(--led);
    opacity: 0.05;
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    -webkit-text-size-adjust: 100%;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    -webkit-font-smoothing: antialiased;
    color: var(--fg);
    background: radial-gradient(1200px 500px at 50% -10%, #1b1f26 0%, var(--bg) 60%) var(--bg);
    background-attachment: scroll;
    min-height: 100vh;
    -webkit-transform: translateZ(0);
    /* force iOS repaint of the gradient after refresh */
}

[data-theme="light"] body {
    background: radial-gradient(1200px 500px at 50% -10%, #f8f1e0 0%, var(--bg) 60%) var(--bg);
    line-height: 1.55;
}

.wrap {
    max-width: 680px;
    margin: 0 auto;
    padding: 28px 18px 60px;
}

header.top {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    margin-bottom: 18px;
    flex-wrap: wrap;
}

.brand {
    display: flex;
    align-items: baseline;
    gap: 10px;
}

.brand h1 {
    font-size: 22px;
    letter-spacing: 0.02em;
    font-weight: 700;
}

.brand h1 .dot {
    color: var(--amber);
}

.badge {
    font-size: 11px;
    color: var(--fg-dim);
    border: 1px solid var(--line);
    border-radius: 999px;
    padding: 3px 10px;
    white-space: nowrap;
}

@media (max-width: 480px) {
    .badge {
        display: none;
    }
}

.tabs {
    display: flex;
    gap: 8px;
    margin-bottom: 22px;
}

.tab {
    flex: 1;
    text-align: center;
    font: inherit;
    font-size: 15px;
    font-weight: 600;
    color: var(--fg-dim);
    background: var(--panel);
    border: 1px solid var(--line);
    border-radius: 10px;
    padding: 11px 8px;
    cursor: pointer;
    transition: color .2s, border-color .2s, background-color .2s, box-shadow .2s;
}

.tab:hover {
    color: var(--fg);
}

.tab.active {
    color: var(--amber);
    border-color: var(--amber-dim);
    box-shadow: 0 0 0 1px var(--amber-dim);
}

.tab .sub {
    display: block;
    font-size: 11px;
    font-weight: 400;
    color: var(--fg-faint);
}

.card {
    background: linear-gradient(rgba(29, 32, 38, 0.45), rgba(29, 32, 38, 0.45)), url("bg-tile-dark.png") repeat top left / 588px 292px, var(--panel);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    padding: 22px 22px 26px;
    margin-bottom: 16px;
}

[data-theme="light"] .card {
    background: linear-gradient(rgba(245, 239, 226, 0.40), rgba(245, 239, 226, 0.40)), url("bg-tile-light.png") repeat top left / 588px 294px, var(--panel);
}

@media (max-width: 480px) {
    .card {
        padding: 18px 16px 22px;
    }
}

h2 {
    font-size: 19px;
    margin-bottom: 6px;
    font-weight: 700;
}

.lead {
    color: var(--fg-dim);
    font-size: 15px;
    margin-bottom: 16px;
}

p+p {
    margin-top: 10px;
}

ul.clean {
    list-style: none;
    margin: 12px 0;
}

ul.clean li {
    padding-left: 26px;
    position: relative;
    margin-bottom: 9px;
    color: var(--fg-dim);
    font-size: 14.5px;
}

ul.clean li::before {
    content: "";
    position: absolute;
    left: 6px;
    top: 9px;
    width: 7px;
    height: 7px;
    border-radius: 50%;
    background: var(--amber);
}

ul.clean li strong {
    color: var(--fg);
}

.btn {
    display: inline-block;
    appearance: none;
    border: none;
    cursor: pointer;
    font: inherit;
    font-weight: 600;
    font-size: 15.5px;
    background: var(--amber);
    color: #14161a;
    padding: 12px 22px;
    border-radius: 10px;
    transition: transform .2s, box-shadow .2s, background-color .2s, border-color .2s, color .2s, opacity .2s, filter .2s;
}

.btn:hover {
    box-shadow: 0 0 0 4px rgba(232, 163, 61, 0.18);
}

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

.btn.big {
    font-size: 17px;
    padding: 14px 26px;
}

.btn.ghost {
    background: var(--panel2);
    color: var(--fg);
    border: 1px solid var(--fg-faint);
    font-weight: 500;
    padding: 11px 18px;
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, .07), 0 1px 0 rgba(0, 0, 0, .22);
}

.btn.ghost:hover {
    background: var(--panel2);
    color: var(--fg);
    filter: brightness(.93);
    border-color: var(--amber);
    transform: translateY(-1px);
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, .07), 0 3px 8px rgba(0, 0, 0, .28), 0 0 0 4px rgba(232, 163, 61, .22);
}

.btn.demo {
    background: transparent;
    color: var(--amber);
    border: 1px dashed var(--amber-dim);
    font-weight: 500;
}

.btn:disabled {
    opacity: .45;
    cursor: not-allowed;
    box-shadow: none;
}

.btn:focus-visible,
.tab:focus-visible,
.themeswitch:focus-visible {
    outline: none;
    box-shadow: 0 0 0 2px var(--bg), 0 0 0 4px var(--amber);
}

.btnrow {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
    margin-top: 18px;
    align-items: center;
}

.screen {
    display: none;
}

.screen.active {
    display: block;
}

select,
.sel {
    width: 100%;
    font: inherit;
    font-size: 15px;
    color: var(--fg);
    background: var(--panel2);
    border: 1px solid var(--line);
    border-radius: 10px;
    padding: 11px 12px;
    outline: none;
}

select:focus {
    border-color: var(--amber-dim);
}

select:focus-visible,
input.sel:focus-visible {
    box-shadow: 0 0 0 2px var(--bg), 0 0 0 4px var(--amber);
}

label.lbl {
    display: block;
    font-size: 12.5px;
    color: var(--fg-faint);
    text-transform: uppercase;
    letter-spacing: .08em;
    margin: 14px 0 6px;
    font-weight: 600;
}

.meter {
    height: 10px;
    border-radius: 6px;
    background: var(--panel2);
    border: 1px solid var(--line);
    overflow: hidden;
    margin-top: 8px;
}

.meter>div {
    height: 100%;
    width: 100%;
    background: linear-gradient(90deg, var(--green), var(--amber) 70%, var(--red));
    clip-path: inset(0 100% 0 0);
    transition: clip-path .08s linear;
}

.meterlbl {
    font-size: 12.5px;
    color: var(--fg-faint);
    margin-top: 6px;
    min-height: 17px;
}

.chips {
    display: flex;
    gap: 7px;
    flex-wrap: wrap;
    margin-bottom: 16px;
}

.chip {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 2px;
    min-width: 56px;
    padding: 7px 10px 6px;
    border-radius: 10px;
    background: var(--panel);
    border: 1px solid var(--line);
    font-size: 13px;
    color: var(--fg-dim);
    cursor: pointer;
    user-select: none;
    transition: border-color .2s, background-color .2s, box-shadow .2s;
}

.chip:hover {
    border-color: var(--fg-faint);
}

.chip .nm {
    font-weight: 700;
    font-size: 14px;
    color: var(--fg);
    letter-spacing: .03em;
}

.chip .st {
    font-size: 10.5px;
    min-height: 13px;
}

.chip.active {
    border-color: var(--amber);
    box-shadow: 0 0 0 1px var(--amber-dim);
}

.chip.active .nm {
    color: var(--amber);
}

.chip.done {
    border-color: #2b5e41;
}

.chip.done .st {
    color: var(--green);
}

.chip.pinned {
    border-color: var(--fg);
    box-shadow: 0 0 0 1px var(--fg-faint);
}

.chip.auto {
    font-weight: 600;
}

.chip.flash {
    animation: flash .6s ease-out;
}

@keyframes flash {
    0% {
        background: #2b5e41;
    }

    100% {
        background: var(--panel);
    }
}

.steplabel {
    font-size: 12px;
    letter-spacing: .14em;
    text-transform: uppercase;
    color: var(--amber);
    font-weight: 700;
    margin-bottom: 10px;
}

.instruction {
    font-size: 19.5px;
    font-weight: 600;
    line-height: 1.4;
}

.instruction .strname {
    color: var(--amber);
}

.sub {
    color: var(--fg-dim);
    font-size: 14.5px;
    margin-top: 8px;
}

details.why {
    margin-top: 14px;
    font-size: 13.5px;
    color: var(--fg-dim);
}

details.why summary {
    cursor: pointer;
    color: var(--fg-faint);
    font-weight: 600;
}

details.why p {
    margin-top: 8px;
}

.tuner {
    text-align: center;
    margin: 10px 0 4px;
}

.readout {
    margin-top: 8px;
}

.cents {
    font-size: 46px;
    font-weight: 700;
    font-variant-numeric: tabular-nums;
    letter-spacing: -0.01em;
    line-height: 1;
}

.cents small {
    font-size: 22px;
    font-weight: 600;
    color: var(--fg-dim);
}

.centsword {
    font-size: 13px;
    color: var(--fg-dim);
    margin-top: 4px;
    min-height: 18px;
}

.detnote {
    font-size: 13.5px;
    color: var(--fg-faint);
    margin-top: 2px;
    font-variant-numeric: tabular-nums;
    min-height: 18px;
    text-transform: none;
}

.lockwrap {
    max-width: 340px;
    margin: 8px auto 0;
    height: 5px;
    border-radius: 3px;
    background: var(--panel2);
    overflow: hidden;
}

.lockwrap>div {
    height: 100%;
    width: 0%;
    background: var(--green);
    transition: width .1s linear;
}

canvas.wave {
    width: 100%;
    height: 46px;
    display: block;
    margin-top: 14px;
    border-radius: 8px;
    background: var(--wave-bg);
}

.coffee {
    margin-top: 16px;
    padding: 12px 14px;
    border-radius: 10px;
    background: var(--panel2);
    border: 1px solid var(--amber-dim);
    font-size: 14.5px;
    color: var(--fg-dim);
}

.coffee a {
    color: var(--amber);
    font-weight: 600;
}

.hint {
    margin-top: 14px;
    padding: 11px 14px;
    border-radius: 10px;
    font-size: 14.5px;
    background: var(--panel2);
    border: 1px solid var(--line);
    display: none;
}

.hint.show {
    display: block;
}

.hint.warn {
    border-color: #7a5a2f;
    color: #e6c07a;
}

.hint.ok {
    border-color: #2b5e41;
    color: #86e2ad;
}

.rounds {
    margin-top: 14px;
}

.rounds h4 {
    font-size: 12px;
    letter-spacing: .1em;
    text-transform: uppercase;
    color: var(--fg-faint);
    margin-bottom: 8px;
}

.roundrow {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 13.5px;
    color: var(--fg-dim);
    margin-bottom: 5px;
    font-variant-numeric: tabular-nums;
}

.roundrow .rb {
    height: 7px;
    border-radius: 4px;
    background: var(--red);
    flex: 0 0 auto;
}

.roundrow .rb.ok {
    background: var(--green);
}

.roundrow .who {
    width: 64px;
    flex: 0 0 auto;
    color: var(--fg-faint);
}

.bigverdict {
    text-align: center;
    margin: 10px 0 4px;
}

.bigverdict .v {
    font-size: 34px;
    font-weight: 700;
}

.bigverdict .v.good {
    color: var(--green);
}

.bigverdict .t {
    color: var(--fg-dim);
    font-size: 14px;
    margin-top: 4px;
}

table.rep {
    width: 100%;
    border-collapse: collapse;
    margin: 14px 0 4px;
    font-size: 14.5px;
}

table.rep th,
table.rep td {
    text-align: left;
    padding: 8px 6px;
    border-bottom: 1px solid var(--line);
}

table.rep th {
    color: var(--fg-faint);
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: .07em;
}

table.rep td.num {
    font-variant-numeric: tabular-nums;
}

table.rep td .ok {
    color: var(--green);
}

table.rep td .warn {
    color: #e6c07a;
}

footer.foot {
    color: var(--fg-faint);
    font-size: 12.5px;
    text-align: center;
    margin-top: 34px;
    line-height: 1.7;
}

footer.foot a {
    color: var(--fg-dim);
}

.errbox {
    display: none;
    margin-top: 14px;
    padding: 12px 14px;
    border-radius: 10px;
    background: #2a1e1e;
    border: 1px solid #6e3b3b;
    color: #f0a5a5;
    font-size: 14px;
}

.errbox.show {
    display: block;
}

.cfgrow {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
}

@media (max-width: 480px) {
    .cfgrow {
        grid-template-columns: 1fr;
    }
}

/* Landscape phones: stack the tuner column (meter on top, full width of the          card) instead of the unusable side-by-side row; meter shrinks to fit the          short viewport but is never cropped. */
@media (orientation: landscape) and (max-height: 520px) {
    .tuner {
        display: flex;
        flex-direction: column;
        align-items: center;
    }

    .meterface {
        max-width: 230px;
        margin: 4px auto 0;
    }

    .readout {
        margin-top: 2px;
    }

    .cents {
        font-size: 30px;
    }

    .steplabel {
        margin-bottom: 4px;
    }

    .card {
        padding: 12px 14px 16px;
        margin-bottom: 10px;
    }

    .wrap {
        padding: 14px 14px 40px;
    }

    .tabs {
        margin-bottom: 10px;
    }

    h2 {
        font-size: 16px;
    }
}