/* ============================================================
   valuator.dev — neomorphic soft UI app
   Surface #e8eef3 · Light shadow #ffffff · Dark shadow #c5cdd6
   Text #2d3748 · Value Blue #4a6cf7 · Positive #38b2ac · Negative #e53e3e
   ============================================================ */

:root {
    --surface: #e8eef3;
    --shadow-light: #ffffff;
    --shadow-dark: #c5cdd6;
    --text: #2d3748;
    --text-soft: #586478;
    --text-mute: #8997a8;
    --value-blue: #4a6cf7;
    --positive: #38b2ac;
    --negative: #e53e3e;

    --r-lg: 22px;
    --r-md: 16px;
    --r-sm: 12px;
    --r-xs: 8px;

    --shadow-out-lg: 12px 12px 28px var(--shadow-dark), -12px -12px 28px var(--shadow-light);
    --shadow-out-md: 8px 8px 16px var(--shadow-dark), -8px -8px 16px var(--shadow-light);
    --shadow-out-sm: 5px 5px 10px var(--shadow-dark), -5px -5px 10px var(--shadow-light);
    --shadow-in-md: inset 4px 4px 8px var(--shadow-dark), inset -4px -4px 8px var(--shadow-light);
    --shadow-in-sm: inset 2px 2px 4px var(--shadow-dark), inset -2px -2px 4px var(--shadow-light);
    --shadow-in-deep: inset 6px 6px 12px var(--shadow-dark), inset -6px -6px 12px var(--shadow-light);

    --font-display: "Inter", system-ui, -apple-system, sans-serif;
    --font-body: "Inter", system-ui, -apple-system, sans-serif;
    --font-mono: "Roboto Mono", "SF Mono", Menlo, Consolas, monospace;
}

* {
    box-sizing: border-box;
}

html, body {
    margin: 0;
    padding: 0;
}

body {
    background: var(--surface);
    color: var(--text);
    font-family: var(--font-body);
    font-size: 0.9375rem;
    line-height: 1.6;
    font-weight: 400;
    min-height: 100vh;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    background-image:
        radial-gradient(circle at 12% 8%, rgba(255, 255, 255, 0.55), transparent 38%),
        radial-gradient(circle at 88% 92%, rgba(197, 205, 214, 0.45), transparent 42%);
    background-attachment: fixed;
}

a {
    color: inherit;
    text-decoration: none;
}

button {
    font: inherit;
    color: inherit;
    background: none;
    border: 0;
    cursor: pointer;
    padding: 0;
}

/* ---------- Layout shell ---------- */

.app {
    max-width: 1100px;
    margin: 0 auto;
    padding: 28px 32px 60px;
}

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

.app-header {
    display: grid;
    grid-template-columns: auto 1fr auto;
    align-items: center;
    gap: 24px;
    padding: 14px 22px;
    border-radius: var(--r-lg);
    background: var(--surface);
    box-shadow: var(--shadow-out-md);
    position: sticky;
    top: 16px;
    z-index: 20;
    backdrop-filter: blur(6px);
}

.brand {
    display: flex;
    align-items: center;
    gap: 12px;
}

.brand-mark {
    width: 42px;
    height: 42px;
    border-radius: 14px;
    background: var(--surface);
    box-shadow: var(--shadow-out-sm);
    display: grid;
    place-items: center;
    color: var(--value-blue);
    transition: box-shadow 220ms ease;
}

.brand-mark:hover {
    box-shadow: var(--shadow-in-sm);
}

.brand-text {
    font-family: var(--font-display);
    font-weight: 700;
    font-size: 1.05rem;
    letter-spacing: -0.01em;
}

.brand-name {
    color: var(--text);
}

.brand-dot {
    color: var(--value-blue);
}

.app-nav {
    display: flex;
    gap: 8px;
    justify-self: center;
    padding: 6px;
    border-radius: 14px;
    background: var(--surface);
    box-shadow: var(--shadow-in-sm);
}

.nav-pill {
    padding: 8px 16px;
    border-radius: 10px;
    font-weight: 500;
    font-size: 0.875rem;
    color: var(--text-soft);
    transition: color 200ms ease, box-shadow 220ms ease, background 200ms ease;
}

.nav-pill:hover {
    color: var(--text);
}

.nav-pill--active {
    background: var(--surface);
    box-shadow: var(--shadow-out-sm);
    color: var(--value-blue);
}

.header-controls {
    display: flex;
    align-items: center;
    gap: 12px;
}

.status-pill {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 14px;
    border-radius: 999px;
    background: var(--surface);
    box-shadow: var(--shadow-in-sm);
    font-size: 0.78rem;
    font-weight: 500;
    color: var(--text-soft);
    font-family: var(--font-mono);
}

.status-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--positive);
    box-shadow: 0 0 0 3px rgba(56, 178, 172, 0.18);
    animation: pulse 2.4s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.55; }
}

.icon-button {
    width: 40px;
    height: 40px;
    border-radius: 12px;
    background: var(--surface);
    box-shadow: var(--shadow-out-sm);
    display: grid;
    place-items: center;
    color: var(--text-soft);
    transition: box-shadow 220ms ease, color 220ms ease;
}

.icon-button:hover {
    color: var(--value-blue);
}

.icon-button:active,
.icon-button.is-pressed {
    box-shadow: var(--shadow-in-sm);
}

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

.app-main {
    display: grid;
    gap: 36px;
    padding-top: 36px;
}

.hero {
    display: grid;
    grid-template-columns: 1.6fr 1fr;
    gap: 32px;
    align-items: end;
}

.eyebrow,
.panel-eyebrow {
    display: inline-block;
    font-family: var(--font-mono);
    font-size: 0.72rem;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    color: var(--text-mute);
    margin-bottom: 12px;
}

.display {
    font-family: var(--font-display);
    font-weight: 700;
    font-size: clamp(1.75rem, 3.4vw, 2.5rem);
    letter-spacing: -0.02em;
    line-height: 1.12;
    margin: 0 0 14px;
    color: var(--text);
}

.lede {
    margin: 0;
    color: var(--text-soft);
    max-width: 52ch;
    font-size: 1rem;
}

.hero-meta {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 12px;
}

.meta-card {
    padding: 14px 16px;
    border-radius: var(--r-md);
    background: var(--surface);
    box-shadow: var(--shadow-in-sm);
    display: grid;
    gap: 6px;
}

.meta-label {
    font-size: 0.72rem;
    color: var(--text-mute);
    font-family: var(--font-mono);
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.meta-value {
    font-family: var(--font-mono);
    font-weight: 500;
    font-size: 1.05rem;
    color: var(--text);
    font-variant-numeric: tabular-nums;
}

/* ---------- Workspace ---------- */

.workspace-grid {
    display: grid;
    grid-template-columns: 1fr 320px;
    gap: 24px;
    align-items: start;
}

.workspace-main {
    display: grid;
    gap: 24px;
}

.panel {
    background: var(--surface);
    border-radius: var(--r-lg);
    box-shadow: var(--shadow-out-lg);
    padding: 26px 28px;
    display: grid;
    gap: 22px;
}

.panel-head {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 16px;
    flex-wrap: wrap;
}

.panel-head--stack {
    flex-direction: column;
    align-items: flex-start;
    gap: 0;
}

.panel-title-group {
    display: grid;
    gap: 0;
}

.panel-title {
    font-family: var(--font-display);
    font-weight: 700;
    font-size: clamp(1.15rem, 1.6vw, 1.4rem);
    margin: 0;
    letter-spacing: -0.01em;
    color: var(--text);
}

/* Model switch */

.model-switch {
    display: inline-flex;
    gap: 4px;
    padding: 4px;
    border-radius: 12px;
    background: var(--surface);
    box-shadow: var(--shadow-in-sm);
}

.switch-pill {
    padding: 8px 14px;
    border-radius: 9px;
    font-size: 0.82rem;
    font-weight: 500;
    color: var(--text-soft);
    transition: color 200ms ease, box-shadow 240ms ease;
    font-family: var(--font-mono);
    letter-spacing: 0.04em;
}

.switch-pill--active {
    background: var(--surface);
    box-shadow: var(--shadow-out-sm);
    color: var(--value-blue);
}

.switch-pill:not(.switch-pill--active):hover {
    color: var(--text);
}

/* Result display */

.result-display {
    border-radius: var(--r-md);
    background: var(--surface);
    box-shadow: var(--shadow-in-deep);
    padding: 28px 26px;
    display: grid;
    grid-template-columns: auto 1fr auto;
    align-items: center;
    gap: 18px;
}

.result-currency {
    font-family: var(--font-mono);
    font-weight: 500;
    font-size: 0.88rem;
    color: var(--text-mute);
    letter-spacing: 0.14em;
    align-self: flex-start;
    padding-top: 12px;
}

.result-value {
    font-family: var(--font-mono);
    font-weight: 500;
    font-size: clamp(2.4rem, 6vw, 3.6rem);
    color: var(--value-blue);
    letter-spacing: -0.02em;
    font-variant-numeric: tabular-nums;
    line-height: 1;
    transition: color 240ms ease;
}

.result-trend {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 14px;
    border-radius: 12px;
    background: var(--surface);
    box-shadow: var(--shadow-out-sm);
    font-family: var(--font-mono);
    font-size: 0.82rem;
    color: var(--positive);
    font-variant-numeric: tabular-nums;
}

.result-trend.is-down {
    color: var(--negative);
}

.trend-arrow {
    font-size: 0.7rem;
    line-height: 1;
}

.result-trend.is-down .trend-arrow {
    transform: rotate(180deg);
}

.trend-period {
    color: var(--text-mute);
}

/* Breakdown */

.result-breakdown {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 14px;
}

.breakdown-item {
    border-radius: var(--r-md);
    padding: 14px 16px;
    background: var(--surface);
    box-shadow: var(--shadow-in-sm);
    display: grid;
    gap: 6px;
}

.breakdown-label {
    font-family: var(--font-mono);
    font-size: 0.7rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--text-mute);
}

.breakdown-value {
    font-family: var(--font-mono);
    font-weight: 500;
    color: var(--text);
    font-size: 1.05rem;
    font-variant-numeric: tabular-nums;
}

/* Sparkline */

.sparkline-wrap {
    border-radius: var(--r-md);
    background: var(--surface);
    box-shadow: var(--shadow-in-sm);
    padding: 14px 16px 8px;
    display: grid;
    gap: 8px;
}

.sparkline-label {
    font-family: var(--font-mono);
    font-size: 0.7rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--text-mute);
}

.sparkline {
    width: 100%;
    height: 80px;
    display: block;
}

/* Request panel */

.copy-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 16px;
    border-radius: 12px;
    background: var(--surface);
    box-shadow: var(--shadow-out-sm);
    font-family: var(--font-mono);
    font-size: 0.82rem;
    color: var(--text-soft);
    transition: box-shadow 220ms ease, color 200ms ease;
}

.copy-btn:hover {
    color: var(--value-blue);
}

.copy-btn:active,
.copy-btn.is-copied {
    box-shadow: var(--shadow-in-sm);
}

.copy-btn.is-copied {
    color: var(--positive);
}

.code-block {
    margin: 0;
    border-radius: var(--r-md);
    background: var(--surface);
    box-shadow: var(--shadow-in-md);
    padding: 22px 24px;
    overflow-x: auto;
}

.code-block code {
    font-family: var(--font-mono);
    font-size: 0.86rem;
    line-height: 1.7;
    color: var(--text);
    white-space: pre;
    display: block;
    font-variant-numeric: tabular-nums;
}

.code-block .tk-key { color: var(--value-blue); }
.code-block .tk-str { color: var(--positive); }
.code-block .tk-num { color: #b06b00; }
.code-block .tk-bool { color: var(--negative); }
.code-block .tk-com { color: var(--text-mute); font-style: italic; }

.response-line {
    display: inline-flex;
    align-items: center;
    gap: 14px;
    padding: 8px 14px;
    border-radius: 999px;
    background: var(--surface);
    box-shadow: var(--shadow-in-sm);
    font-family: var(--font-mono);
    font-size: 0.78rem;
    color: var(--text-mute);
    align-self: start;
    font-variant-numeric: tabular-nums;
}

.response-status {
    color: var(--positive);
}

.response-time {
    color: var(--text-soft);
}

/* Scenarios */

.panel--scenarios {
    gap: 16px;
}

.scenarios {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
}

.scenario {
    text-align: left;
    padding: 16px 18px;
    border-radius: var(--r-md);
    background: var(--surface);
    box-shadow: var(--shadow-out-sm);
    display: grid;
    gap: 4px;
    transition: box-shadow 240ms ease, color 220ms ease;
}

.scenario:hover {
    color: var(--value-blue);
}

.scenario--active {
    box-shadow: var(--shadow-in-sm);
    color: var(--value-blue);
}

.scenario-name {
    font-weight: 600;
    font-size: 0.95rem;
}

.scenario-meta {
    font-family: var(--font-mono);
    font-size: 0.78rem;
    color: var(--text-mute);
    font-variant-numeric: tabular-nums;
}

.scenario--active .scenario-meta {
    color: var(--text-soft);
}

/* ---------- Sidebar / parameters ---------- */

.workspace-side {
    position: sticky;
    top: 110px;
}

.panel--params {
    padding: 24px 24px 26px;
    gap: 18px;
}

.param {
    display: grid;
    gap: 10px;
}

.param-row {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    gap: 12px;
}

.param-label {
    font-size: 0.86rem;
    font-weight: 500;
    color: var(--text-soft);
}

.param-output {
    font-family: var(--font-mono);
    font-weight: 500;
    color: var(--value-blue);
    font-size: 0.95rem;
    font-variant-numeric: tabular-nums;
    padding: 4px 10px;
    border-radius: 8px;
    background: var(--surface);
    box-shadow: var(--shadow-in-sm);
    min-width: 64px;
    text-align: right;
}

.param-scale {
    display: flex;
    justify-content: space-between;
    font-family: var(--font-mono);
    font-size: 0.7rem;
    color: var(--text-mute);
    font-variant-numeric: tabular-nums;
}

/* Slider */

.slider {
    -webkit-appearance: none;
    appearance: none;
    width: 100%;
    height: 16px;
    background: transparent;
    margin: 0;
    cursor: pointer;
}

.slider::-webkit-slider-runnable-track {
    height: 14px;
    border-radius: 999px;
    background: var(--surface);
    box-shadow: var(--shadow-in-sm);
}

.slider::-moz-range-track {
    height: 14px;
    border-radius: 999px;
    background: var(--surface);
    box-shadow: var(--shadow-in-sm);
    border: 0;
}

.slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 22px;
    height: 22px;
    border-radius: 50%;
    background: var(--value-blue);
    margin-top: -4px;
    box-shadow:
        2px 2px 6px var(--shadow-dark),
        -2px -2px 6px var(--shadow-light),
        inset 1px 1px 2px rgba(255, 255, 255, 0.35),
        inset -1px -1px 2px rgba(0, 0, 0, 0.18);
    transition: transform 200ms ease, box-shadow 200ms ease;
    border: 0;
}

.slider::-moz-range-thumb {
    width: 22px;
    height: 22px;
    border-radius: 50%;
    background: var(--value-blue);
    box-shadow:
        2px 2px 6px var(--shadow-dark),
        -2px -2px 6px var(--shadow-light),
        inset 1px 1px 2px rgba(255, 255, 255, 0.35),
        inset -1px -1px 2px rgba(0, 0, 0, 0.18);
    transition: transform 200ms ease;
    border: 0;
}

.slider:hover::-webkit-slider-thumb,
.slider:focus::-webkit-slider-thumb {
    transform: scale(1.08);
}

.slider:hover::-moz-range-thumb,
.slider:focus::-moz-range-thumb {
    transform: scale(1.08);
}

.slider:active::-webkit-slider-thumb {
    transform: scale(0.96);
}

.slider:active::-moz-range-thumb {
    transform: scale(0.96);
}

/* Toggle */

.toggle-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px 14px;
    border-radius: var(--r-sm);
    background: var(--surface);
    box-shadow: var(--shadow-in-sm);
}

.neo-toggle {
    width: 50px;
    height: 28px;
    border-radius: 999px;
    background: var(--surface);
    box-shadow: var(--shadow-in-sm);
    position: relative;
    transition: box-shadow 240ms ease;
}

.neo-toggle-knob {
    position: absolute;
    top: 3px;
    left: 3px;
    width: 22px;
    height: 22px;
    border-radius: 50%;
    background: var(--surface);
    box-shadow: var(--shadow-out-sm);
    transition: transform 260ms cubic-bezier(0.4, 0.1, 0.3, 1.2), background 240ms ease;
}

.neo-toggle[aria-pressed="true"] .neo-toggle-knob {
    transform: translateX(22px);
    background: var(--value-blue);
    box-shadow:
        2px 2px 5px var(--shadow-dark),
        -2px -2px 5px var(--shadow-light);
}

.reset-btn {
    margin-top: 6px;
    padding: 12px 16px;
    border-radius: var(--r-sm);
    background: var(--surface);
    box-shadow: var(--shadow-out-sm);
    font-weight: 500;
    color: var(--text-soft);
    transition: box-shadow 240ms ease, color 220ms ease;
    font-size: 0.88rem;
}

.reset-btn:hover {
    color: var(--value-blue);
}

.reset-btn:active {
    box-shadow: var(--shadow-in-sm);
}

/* ---------- Features ---------- */

.features-head {
    display: grid;
    gap: 0;
    margin-bottom: 8px;
}

.features-title {
    font-family: var(--font-display);
    font-weight: 700;
    font-size: clamp(1.3rem, 2.4vw, 1.8rem);
    letter-spacing: -0.015em;
    margin: 0;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 18px;
}

.feature {
    background: var(--surface);
    border-radius: var(--r-lg);
    box-shadow: var(--shadow-out-md);
    padding: 22px 24px;
    display: grid;
    gap: 12px;
    transition: box-shadow 280ms ease, transform 280ms ease;
}

.feature:hover {
    transform: translateY(-2px);
    box-shadow: 14px 14px 32px var(--shadow-dark), -14px -14px 32px var(--shadow-light);
}

.feature-icon {
    width: 48px;
    height: 48px;
    border-radius: 14px;
    background: var(--surface);
    box-shadow: var(--shadow-in-sm);
    display: grid;
    place-items: center;
    color: var(--value-blue);
}

.feature-title {
    font-family: var(--font-display);
    font-size: 1.05rem;
    font-weight: 600;
    margin: 0;
    color: var(--text);
}

.feature-text {
    margin: 0;
    color: var(--text-soft);
    font-size: 0.9rem;
}

/* ---------- Endpoints ---------- */

.endpoints {
    display: grid;
    gap: 18px;
}

.endpoint-list {
    background: var(--surface);
    border-radius: var(--r-lg);
    box-shadow: var(--shadow-out-md);
    padding: 12px;
    display: grid;
    gap: 8px;
}

.endpoint {
    display: grid;
    grid-template-columns: 70px 1.2fr 2fr;
    align-items: center;
    gap: 18px;
    padding: 14px 18px;
    border-radius: var(--r-md);
    background: var(--surface);
    box-shadow: var(--shadow-in-sm);
    transition: box-shadow 240ms ease;
}

.endpoint:hover {
    box-shadow: var(--shadow-out-sm);
}

.endpoint-method {
    font-family: var(--font-mono);
    font-weight: 700;
    font-size: 0.78rem;
    color: var(--value-blue);
    letter-spacing: 0.06em;
    padding: 4px 8px;
    border-radius: 6px;
    background: var(--surface);
    box-shadow: var(--shadow-out-sm);
    text-align: center;
}

.endpoint-path {
    font-family: var(--font-mono);
    font-weight: 500;
    color: var(--text);
    font-size: 0.92rem;
}

.endpoint-desc {
    color: var(--text-soft);
    font-size: 0.88rem;
}

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

.app-footer {
    margin-top: 56px;
    padding: 28px 32px;
    border-radius: var(--r-lg);
    background: var(--surface);
    box-shadow: var(--shadow-out-md);
    display: grid;
    gap: 22px;
}

.footer-row {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 36px;
}

.footer-brand {
    font-family: var(--font-display);
    font-weight: 700;
    font-size: 1.1rem;
}

.footer-tagline {
    margin: 8px 0 0;
    font-weight: 400;
    font-size: 0.9rem;
    color: var(--text-soft);
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 18px;
}

.link-group {
    display: grid;
    gap: 8px;
    align-content: start;
}

.link-title {
    font-family: var(--font-mono);
    font-size: 0.72rem;
    letter-spacing: 0.16em;
    text-transform: uppercase;
    color: var(--text-mute);
}

.link-group a {
    color: var(--text-soft);
    font-size: 0.9rem;
    transition: color 200ms ease;
}

.link-group a:hover {
    color: var(--value-blue);
}

.footer-bar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 14px 18px;
    border-radius: var(--r-md);
    background: var(--surface);
    box-shadow: var(--shadow-in-sm);
    font-family: var(--font-mono);
    font-size: 0.78rem;
    color: var(--text-mute);
}

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

@media (max-width: 920px) {
    .app {
        padding: 18px 16px 40px;
    }
    .app-header {
        grid-template-columns: 1fr auto;
        padding: 12px 16px;
        gap: 12px;
    }
    .app-nav {
        order: 3;
        grid-column: 1 / -1;
        justify-self: stretch;
        overflow-x: auto;
    }
    .hero {
        grid-template-columns: 1fr;
    }
    .workspace-grid {
        grid-template-columns: 1fr;
    }
    .workspace-side {
        position: static;
    }
    .features-grid {
        grid-template-columns: 1fr;
    }
    .endpoint {
        grid-template-columns: 60px 1fr;
        grid-template-rows: auto auto;
        row-gap: 4px;
    }
    .endpoint-desc {
        grid-column: 1 / -1;
    }
    .footer-row {
        grid-template-columns: 1fr;
    }
    .footer-links {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (max-width: 560px) {
    .result-display {
        grid-template-columns: 1fr;
        text-align: center;
    }
    .result-currency {
        padding-top: 0;
    }
    .result-trend {
        justify-self: center;
    }
    .result-breakdown {
        grid-template-columns: 1fr;
    }
    .scenarios {
        grid-template-columns: 1fr;
    }
    .hero-meta {
        grid-template-columns: 1fr;
    }
    .footer-bar {
        flex-direction: column;
        gap: 6px;
        text-align: center;
    }
}

@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.001ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.001ms !important;
    }
    .slider::-webkit-slider-thumb,
    .slider::-moz-range-thumb {
        transition: none;
    }
}