@font-face {
    font-family: 'Mozilla Text';
    src: url('/mozilla-text.woff2') format('woff2');
    font-display: swap;
}

@font-face {
    font-family: 'Inter';
    src: url('/inter.woff2') format('woff2');
    font-display: swap;
}

:root,
[data-theme='dark'] {
    color-scheme: dark;
    --signal-ground: #060712;
    --signal-panel: #0c1020;
    --signal-panel-raised: #12182b;
    --signal-grid: rgb(0 217 232 / 0.15);
    --signal-ink: #f5f6ff;
    --signal-muted: #b8bbcf;
    --signal-faint: #858aa6;
    --signal-border: #303854;
    --signal-cyan: #00d9e8;
    --signal-violet: #8066ff;
    --signal-magenta: #ff398f;
    --signal-live: #58e080;
    --signal-error: #ff7a9f;
    --signal-shadow: rgb(0 0 0 / 0.42);
    --signal-focus: #82f5ff;
}

[data-theme='light'] {
    color-scheme: light;
    --signal-ground: #f4f2ec;
    --signal-panel: #fffdf9;
    --signal-panel-raised: #f0effa;
    --signal-grid: rgb(25 70 105 / 0.14);
    --signal-ink: #10121c;
    --signal-muted: #45495c;
    --signal-faint: #656b82;
    --signal-border: #c9cad5;
    --signal-cyan: #006f80;
    --signal-violet: #5735d1;
    --signal-magenta: #c81264;
    --signal-live: #187a3a;
    --signal-error: #a70f43;
    --signal-shadow: rgb(37 41 62 / 0.16);
    --signal-focus: #006c7c;
}

* {
    box-sizing: border-box;
}

html {
    font-size: 100%;
    background: var(--signal-ground);
}

body {
    min-width: 20rem;
    min-height: 100svh;
    margin: 0;
    background:
        radial-gradient(circle at 78% 14%, color-mix(in srgb, var(--signal-cyan) 9%, transparent), transparent 30rem),
        radial-gradient(circle at 14% 70%, color-mix(in srgb, var(--signal-magenta) 8%, transparent), transparent 34rem),
        var(--signal-ground);
    color: var(--signal-ink);
    font-family: 'Inter', system-ui, sans-serif;
    -webkit-font-smoothing: antialiased;
}

button,
input {
    font: inherit;
}

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

button:focus-visible,
a:focus-visible,
input:focus-visible,
[tabindex]:focus-visible {
    outline: 3px solid var(--signal-focus);
    outline-offset: 4px;
}

a {
    color: inherit;
}

.utility-label,
.wordmark,
.dormant-field header,
.dormant-field footer,
.diagnostic,
.site-header,
.metric-grid span,
.metric-grid small,
.signal-panel > header p,
.signal-panel > footer,
.record-card header span,
.boundary-card a,
.dashboard-status {
    font-family: 'Mozilla Text', sans-serif;
    font-weight: 600;
}

.utility-label {
    margin: 0;
    color: var(--signal-cyan);
    font-size: 0.76rem;
    letter-spacing: 0.12em;
    text-transform: uppercase;
}

.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;
}

/* Login: one recognizable action beside a dormant, explicitly non-data field. */
.login-page {
    display: grid;
    place-items: center;
    padding: clamp(1rem, 4vw, 4rem);
    overflow-x: hidden;
}

.login-shell {
    width: min(100%, 76rem);
    display: grid;
    grid-template-columns: minmax(18rem, 0.78fr) minmax(24rem, 1.22fr);
    align-items: center;
    gap: clamp(2rem, 7vw, 7rem);
}

.login-copy {
    position: relative;
    z-index: 2;
}

.login-copy h1 {
    max-width: 10ch;
    margin: 0.8rem 0 1.25rem;
    font-size: clamp(3rem, 7vw, 6.4rem);
    line-height: 0.88;
    letter-spacing: -0.07em;
    text-wrap: balance;
}

.login-lead {
    max-width: 35rem;
    margin: 0;
    color: var(--signal-muted);
    font-size: clamp(1.05rem, 1rem + 0.4vw, 1.3rem);
    line-height: 1.6;
    text-wrap: pretty;
}

.login-form {
    margin-top: 2rem;
}

.login-form label {
    display: block;
    margin-bottom: 0.55rem;
    color: var(--signal-muted);
    font-size: 0.85rem;
    font-weight: 650;
}

.field-row {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
    gap: 0.6rem;
}

.field-row input,
.field-row button {
    min-height: 3.25rem;
    border-radius: 0.7rem;
}

.field-row input {
    min-width: 0;
    border: 1px solid var(--signal-border);
    background: var(--signal-panel);
    color: var(--signal-ink);
    padding: 0.75rem 0.9rem;
}

.field-row input:focus {
    border-color: var(--signal-cyan);
}

.field-row button {
    border: 1px solid var(--signal-cyan);
    background: var(--signal-cyan);
    color: var(--signal-ground);
    padding: 0.7rem 1rem;
    cursor: pointer;
    font-weight: 750;
    transition:
        transform 160ms cubic-bezier(0.23, 1, 0.32, 1),
        box-shadow 160ms cubic-bezier(0.23, 1, 0.32, 1);
}

.field-row button:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: 0 0.8rem 2rem color-mix(in srgb, var(--signal-cyan) 24%, transparent);
}

.field-row button:disabled {
    opacity: 0.7;
    cursor: wait;
}

.form-status {
    min-height: 1.5rem;
    margin: 0.6rem 0 0;
    color: var(--signal-error);
    font-size: 0.9rem;
}

.privacy-note {
    max-width: 42rem;
    margin: 1.25rem 0 0;
    color: var(--signal-faint);
    font-size: 0.82rem;
    line-height: 1.6;
}

.privacy-note a {
    display: inline-flex;
    min-height: 2.75rem;
    align-items: center;
    color: var(--signal-cyan);
    text-underline-offset: 0.2em;
}

.dormant-field {
    position: relative;
    isolation: isolate;
    width: min(100%, 44rem);
    aspect-ratio: 1.06;
    overflow: hidden;
    border: 1px solid color-mix(in srgb, var(--signal-cyan) 42%, var(--signal-border));
    border-radius: 1.1rem;
    background:
        linear-gradient(var(--signal-grid) 1px, transparent 1px), linear-gradient(90deg, var(--signal-grid) 1px, transparent 1px),
        radial-gradient(circle at 70% 48%, color-mix(in srgb, var(--signal-magenta) 20%, transparent), transparent 28%),
        radial-gradient(circle at 42% 74%, color-mix(in srgb, var(--signal-cyan) 18%, transparent), transparent 32%), #070916;
    background-size:
        3rem 3rem,
        3rem 3rem,
        auto,
        auto,
        auto;
    box-shadow: 0 2rem 5rem var(--signal-shadow);
    transform: perspective(75rem) rotateY(-2deg) rotateX(1deg);
}

.dormant-field::after {
    content: '';
    position: absolute;
    inset: -30% -80%;
    z-index: 4;
    pointer-events: none;
    background: linear-gradient(105deg, transparent 44%, rgb(0 217 232 / 0.1) 50%, transparent 56%);
    animation: signal-sweep 7s cubic-bezier(0.77, 0, 0.175, 1) infinite;
}

.dormant-field header,
.dormant-field footer {
    position: absolute;
    right: 1rem;
    left: 1rem;
    z-index: 5;
    display: flex;
    justify-content: space-between;
    color: #c3c8df;
    font-size: 0.62rem;
    letter-spacing: 0.09em;
    text-transform: uppercase;
}

.dormant-field header {
    top: 1rem;
    padding-bottom: 0.8rem;
    border-bottom: 1px solid rgb(0 217 232 / 0.22);
}

.dormant-field header span:last-child {
    color: #ff76ad;
}

.dormant-field footer {
    bottom: 0.8rem;
}

.dormant-field svg {
    position: absolute;
    inset: 2.6rem 0 0;
    width: 100%;
    height: calc(100% - 2.6rem);
}

.dormant-mass {
    fill: url(#dormant-fill);
    opacity: 0.2;
}

.dormant-points {
    fill: url(#dormant-points);
    color: #00d9e8;
    opacity: 0.78;
}

.dormant-ridge {
    fill: none;
    stroke: url(#dormant-fill);
    stroke-width: 4;
    filter: drop-shadow(0 0 8px rgb(128 102 255 / 0.72));
}

.diagnostic {
    position: absolute;
    top: 24%;
    left: 8%;
    z-index: 6;
    display: grid;
    grid-template-columns: auto auto;
    gap: 0.65rem 1.6rem;
    width: min(68%, 22rem);
    border: 1px solid rgb(0 217 232 / 0.38);
    border-radius: 0.7rem;
    background: rgb(8 11 26 / 0.9);
    color: #c3c8df;
    padding: 1.15rem;
    font-size: 0.7rem;
}

.diagnostic strong {
    color: #fff;
    text-align: right;
}

/* Authenticated dashboard. */
.site-header {
    position: sticky;
    top: 0;
    z-index: 20;
    min-height: 4.25rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    border-bottom: 1px solid var(--signal-border);
    background: color-mix(in srgb, var(--signal-ground) 88%, transparent);
    padding: 0.7rem max(1rem, calc((100vw - 82rem) / 2));
    backdrop-filter: blur(20px);
}

.wordmark {
    display: inline-flex;
    min-height: 2.75rem;
    align-items: center;
    font-size: 0.9rem;
    font-weight: 750;
    letter-spacing: 0.03em;
    text-decoration: none;
}

.wordmark span {
    color: var(--signal-cyan);
}

.site-header nav {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.icon-button,
.quiet-button,
.range-control button {
    min-height: 2.75rem;
    border: 1px solid var(--signal-border);
    border-radius: 999px;
    background: var(--signal-panel);
    color: var(--signal-ink);
    cursor: pointer;
}

.icon-button {
    min-width: 2.75rem;
}

.quiet-button {
    padding: 0.6rem 0.9rem;
    font-weight: 650;
}

.dashboard-shell {
    width: min(100% - 2rem, 82rem);
    margin-inline: auto;
    padding-block: clamp(2.5rem, 6vw, 6rem);
}

.dashboard-intro {
    display: flex;
    align-items: end;
    justify-content: space-between;
    gap: 2rem;
}

.dashboard-intro h1 {
    margin: 0.65rem 0 1rem;
    font-size: clamp(3rem, 9vw, 7rem);
    line-height: 0.86;
    letter-spacing: -0.075em;
}

.dashboard-intro > div > p:last-child {
    max-width: 48rem;
    margin: 0;
    color: var(--signal-muted);
    font-size: clamp(1rem, 0.95rem + 0.25vw, 1.2rem);
    line-height: 1.6;
    text-wrap: pretty;
}

.range-control {
    flex: none;
    display: flex;
    gap: 0.35rem;
}

.range-control button {
    min-width: 2.75rem;
    padding-inline: 0.7rem;
    font-weight: 700;
}

.range-control button.active {
    border-color: var(--signal-cyan);
    background: var(--signal-cyan);
    color: var(--signal-ground);
}

.metric-grid {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    margin-top: clamp(2rem, 5vw, 4rem);
    overflow: hidden;
    border: 1px solid var(--signal-border);
    border-radius: 1rem;
    background: var(--signal-panel);
    box-shadow: 0 1rem 3rem var(--signal-shadow);
}

.metric-grid article {
    min-width: 0;
    padding: clamp(1rem, 2.5vw, 1.7rem);
}

.metric-grid article + article {
    border-left: 1px solid var(--signal-border);
}

.metric-grid span,
.metric-grid small {
    display: block;
    color: var(--signal-muted);
    font-size: 0.7rem;
    letter-spacing: 0.06em;
}

.metric-grid span {
    text-transform: uppercase;
}

.metric-grid strong {
    display: block;
    margin-block: 0.55rem;
    font-size: clamp(2rem, 4vw, 3.4rem);
    line-height: 1;
    font-variant-numeric: tabular-nums;
}

.metric-grid small {
    line-height: 1.45;
}

.signal-panel {
    margin-top: 1rem;
    overflow: hidden;
    border: 1px solid color-mix(in srgb, var(--signal-cyan) 45%, var(--signal-border));
    border-radius: 1rem;
    background: var(--signal-panel);
    box-shadow: 0 1.5rem 4rem var(--signal-shadow);
}

.signal-panel > header,
.signal-panel > footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    padding: 1rem clamp(1rem, 3vw, 1.5rem);
}

.signal-panel > header {
    border-bottom: 1px solid var(--signal-border);
}

.signal-panel > header h2 {
    margin: 0.3rem 0 0;
    font-size: clamp(1.35rem, 2vw, 1.8rem);
}

.source-time {
    flex: none;
    margin: 0;
    color: var(--signal-live);
    font-size: 0.7rem;
}

.terrain {
    position: relative;
    height: clamp(18rem, 42vw, 32rem);
    overflow: hidden;
    background:
        linear-gradient(var(--signal-grid) 1px, transparent 1px), linear-gradient(90deg, var(--signal-grid) 1px, transparent 1px),
        radial-gradient(circle at 65% 48%, color-mix(in srgb, var(--signal-magenta) 18%, transparent), transparent 32%),
        radial-gradient(circle at 35% 72%, color-mix(in srgb, var(--signal-cyan) 14%, transparent), transparent 36%),
        color-mix(in srgb, var(--signal-panel) 76%, #060712);
    background-size:
        3rem 3rem,
        3rem 3rem,
        auto,
        auto,
        auto;
    cursor: crosshair;
}

.terrain svg {
    width: 100%;
    height: 100%;
}

.terrain-mass {
    fill: url(#terrain-mass-gradient);
}

.terrain-dots {
    fill: url(#terrain-dot-pattern);
}

.terrain-line {
    fill: none;
    stroke: url(#terrain-line-gradient);
    stroke-width: 5;
    vector-effect: non-scaling-stroke;
    filter: drop-shadow(0 0 7px color-mix(in srgb, var(--signal-violet) 65%, transparent));
    animation: ridge-arrive 700ms cubic-bezier(0.23, 1, 0.32, 1) both;
}

.terrain-cursor {
    stroke: var(--signal-ink);
    stroke-width: 1;
    stroke-dasharray: 5 5;
    opacity: 0.7;
    vector-effect: non-scaling-stroke;
}

.terrain-point {
    fill: var(--signal-panel);
    stroke: var(--signal-cyan);
    stroke-width: 4;
    vector-effect: non-scaling-stroke;
}

.terrain-readout {
    position: absolute;
    top: 1rem;
    left: 1rem;
    max-width: calc(100% - 2rem);
    border: 1px solid color-mix(in srgb, var(--signal-cyan) 55%, var(--signal-border));
    border-radius: 0.6rem;
    background: color-mix(in srgb, var(--signal-panel) 92%, transparent);
    padding: 0.7rem 0.8rem;
    color: var(--signal-ink);
    font-family: 'Mozilla Text', sans-serif;
    font-size: 0.75rem;
    font-weight: 650;
    backdrop-filter: blur(12px);
}

.signal-panel > footer {
    border-top: 1px solid var(--signal-border);
    color: var(--signal-muted);
    font-size: 0.68rem;
    line-height: 1.45;
}

.record-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 1rem;
    margin-top: 1rem;
}

.record-card {
    overflow: hidden;
    border: 1px solid var(--signal-border);
    border-radius: 1rem;
    background: var(--signal-panel);
}

.record-card--wide {
    grid-column: 1 / -1;
}

.record-card header {
    display: flex;
    justify-content: space-between;
    gap: 1rem;
    border-bottom: 1px solid var(--signal-border);
    padding: 0.9rem 1rem;
}

.record-card header span {
    color: var(--signal-cyan);
    font-size: 0.74rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.record-card header strong {
    color: var(--signal-muted);
    font-size: 0.72rem;
}

.record-card ol {
    display: grid;
    gap: 0.85rem;
    margin: 0;
    padding: 1rem;
    list-style: none;
}

.record-card li {
    position: relative;
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
    gap: 0.75rem;
    padding-bottom: 0.5rem;
    color: var(--signal-muted);
    font-size: 0.88rem;
}

.record-card li span {
    min-width: 0;
    overflow-wrap: anywhere;
}

.record-card li strong {
    color: var(--signal-ink);
    font-variant-numeric: tabular-nums;
}

.record-card li progress {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 2px;
    overflow: hidden;
    appearance: none;
    border: 0;
    background: transparent;
}

.record-card li progress::-webkit-progress-bar {
    background: transparent;
}

.record-card li progress::-webkit-progress-value {
    background: linear-gradient(90deg, var(--signal-cyan), var(--signal-violet), var(--signal-magenta));
}

.record-card li progress::-moz-progress-bar {
    background: linear-gradient(90deg, var(--signal-cyan), var(--signal-violet), var(--signal-magenta));
}

.record-card li.empty {
    grid-template-columns: 1fr;
}

.boundary-card {
    margin-top: 1rem;
    border: 1px solid var(--signal-border);
    border-radius: 1rem;
    background:
        linear-gradient(135deg, color-mix(in srgb, var(--signal-violet) 12%, transparent), transparent 60%), var(--signal-panel-raised);
    padding: clamp(1.25rem, 4vw, 3rem);
}

.boundary-card h2 {
    max-width: 18ch;
    margin: 0.7rem 0 1rem;
    font-size: clamp(2rem, 5vw, 4rem);
    line-height: 0.98;
    letter-spacing: -0.05em;
    text-wrap: balance;
}

.boundary-card > p:not(.utility-label) {
    max-width: 62ch;
    color: var(--signal-muted);
    line-height: 1.65;
    text-wrap: pretty;
}

.boundary-card a {
    display: inline-flex;
    min-height: 2.75rem;
    align-items: center;
    margin-top: 0.5rem;
    color: var(--signal-cyan);
    font-weight: 700;
    text-underline-offset: 0.3em;
}

.dashboard-status {
    margin: 1rem 0 0;
    color: var(--signal-faint);
    font-size: 0.72rem;
}

@keyframes signal-sweep {
    from {
        transform: translateX(-32%);
    }
    to {
        transform: translateX(32%);
    }
}

@keyframes ridge-arrive {
    from {
        opacity: 0;
        transform: translateY(12px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@media (max-width: 56rem) {
    .login-shell {
        grid-template-columns: 1fr;
        max-width: 44rem;
    }

    .dormant-field {
        order: -1;
        max-height: 38svh;
    }

    .dashboard-intro {
        align-items: start;
        flex-direction: column;
    }

    .metric-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .metric-grid article:nth-child(3) {
        border-left: 0;
        border-top: 1px solid var(--signal-border);
    }

    .metric-grid article:nth-child(4) {
        border-top: 1px solid var(--signal-border);
    }
}

@media (max-width: 40rem) {
    .login-page {
        display: block;
        padding: 1rem;
    }

    .login-shell {
        gap: 1.5rem;
    }

    .dormant-field {
        max-height: none;
        aspect-ratio: 1.28;
    }

    .login-copy h1 {
        max-width: 12ch;
        font-size: clamp(2.7rem, 14vw, 4.4rem);
    }

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

    .field-row button {
        width: 100%;
    }

    .site-header {
        min-height: 3.9rem;
    }

    .wordmark span {
        display: none;
    }

    .quiet-button {
        font-size: 0.78rem;
    }

    .dashboard-shell {
        width: min(100% - 1rem, 82rem);
    }

    .dashboard-intro h1 {
        font-size: clamp(3.25rem, 18vw, 5.2rem);
    }

    .range-control {
        width: 100%;
    }

    .range-control button {
        flex: 1;
    }

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

    .metric-grid article + article,
    .metric-grid article:nth-child(3) {
        border-top: 1px solid var(--signal-border);
        border-left: 0;
    }

    .signal-panel > header,
    .signal-panel > footer {
        align-items: flex-start;
        flex-direction: column;
    }

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

    .record-card--wide {
        grid-column: auto;
    }

    .record-card header {
        align-items: flex-start;
        flex-direction: column;
        gap: 0.25rem;
    }
}

@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;
    }
}

@media (forced-colors: active) {
    .dormant-field,
    .terrain,
    .metric-grid,
    .record-card,
    .boundary-card {
        border: 1px solid CanvasText;
        background: Canvas;
    }

    .record-card li progress {
        background: CanvasText;
    }
}