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

:root {
    color-scheme: dark;
    --bg: #0e0f14;
    --surface: #191b23;
    --surface-soft: #14161d;
    --surface-raised: #232632;
    --ink: #f2f1ea;
    --line: #565b6b;
    --line-soft: rgba(122, 128, 148, 0.45);
    --text-muted: #b9bcc7;
    --text-soft: #8f93a1;
    --text-faint: #6a6e7c;
    --accent: #ffc93c;
    --accent-ink: #17120a;
    --accent-soft: rgba(255, 201, 60, 0.12);
    --danger: #ff6b6b;
    --success: #43d9a3;
    --warning: #ffa04d;
    --shadow-c: #000000;
    --shadow-hard: 5px 5px 0 var(--shadow-c);
    --shadow-sm: 3px 3px 0 var(--shadow-c);
    --shadow-btn: 2px 2px 0 var(--shadow-c);
    --radius: 10px;
    --radius-sm: 8px;
    --border-w: 2px;
}

:root[data-theme="light"] {
    color-scheme: light;
    --bg: #f2ede2;
    --surface: #fffdf6;
    --surface-soft: #f6f1e5;
    --surface-raised: #ffffff;
    --ink: #16161a;
    --line: #16161a;
    --line-soft: rgba(22, 22, 26, 0.22);
    --text-muted: #45454e;
    --text-soft: #595963;
    --text-faint: #7c7c87;
    --accent: #ffd400;
    --accent-ink: #16161a;
    --accent-soft: rgba(255, 212, 0, 0.28);
    --danger: #d92d2d;
    --success: #0a9f63;
    --warning: #8a5a00;
    --shadow-c: #16161a;
}

body {
    font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    background: var(--bg);
    color: var(--text-muted);
    min-height: 100vh;
    min-height: 100svh;
    display: grid;
    place-items: center;
    padding: 1rem;
}

::selection {
    background-color: var(--accent);
    color: var(--accent-ink);
}

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

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

svg {
    display: block;
}

button:focus-visible,
summary:focus-visible,
input:focus-visible {
    outline: 3px solid var(--ink);
    outline-offset: 2px;
}

[hidden] {
    display: none !important;
}

.visually-hidden {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

.app-container {
    width: 100%;
    max-width: 32rem;
    display: flex;
    flex-direction: column;
    gap: 0.9rem;
}

.app-header {
    display: flex;
    min-width: 0;
    align-items: center;
    justify-content: space-between;
    gap: 0.75rem;
    padding-inline: 0.15rem;
}

.brand {
    display: flex;
    min-width: 0;
    align-items: center;
    gap: 0.55rem;
}

.brand-mark {
    flex: 0 0 1.2rem;
    width: 1.2rem;
    height: 1.2rem;
    color: var(--ink);
}

.brand h1 {
    overflow: hidden;
    color: var(--ink);
    font-size: 0.95rem;
    font-weight: 800;
    letter-spacing: 0.02em;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.shell {
    display: grid;
    grid-template-columns: 1fr;
    gap: 0.9rem;
}

.panel {
    min-width: 0;
    padding: 0.9rem;
    border: var(--border-w) solid var(--line);
    border-radius: var(--radius);
    background: var(--surface);
    box-shadow: var(--shadow-hard);
}

.icon-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    flex: 0 0 auto;
    width: 2.35rem;
    height: 2.35rem;
    padding: 0;
    border: var(--border-w) solid var(--line);
    border-radius: var(--radius-sm);
    background: var(--surface-raised);
    color: var(--text-soft);
    cursor: pointer;
    box-shadow: var(--shadow-btn);
    transition: color 0.14s ease, background-color 0.14s ease, transform 0.14s ease, box-shadow 0.14s ease, opacity 0.14s ease;
}

.icon-btn svg {
    width: 1.05rem;
    height: 1.05rem;
}

.icon-btn:hover {
    color: var(--ink);
    background: var(--accent-soft);
    transform: translate(-1px, -1px);
    box-shadow: var(--shadow-sm);
}

.icon-btn:active {
    transform: translate(2px, 2px);
    box-shadow: 0 0 0 var(--shadow-c);
}

.theme-toggle {
    width: 2.6rem;
    height: 2.6rem;
    color: var(--ink);
}

.theme-toggle svg {
    width: 1rem;
    height: 1rem;
}

.icon-moon {
    display: none;
}

:root[data-theme="light"] .icon-sun {
    display: none;
}

:root[data-theme="light"] .icon-moon {
    display: block;
}

.segmented {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0.7rem;
    margin-bottom: 0.9rem;
}

.seg-btn {
    min-height: 2.5rem;
    border: var(--border-w) solid var(--line);
    border-radius: var(--radius-sm);
    background: var(--surface-soft);
    color: var(--text-soft);
    font-size: 0.78rem;
    font-weight: 800;
    letter-spacing: 0.09em;
    text-transform: uppercase;
    cursor: pointer;
    box-shadow: var(--shadow-btn);
    transition: color 0.14s ease, background-color 0.14s ease, transform 0.14s ease, box-shadow 0.14s ease;
}

.seg-btn:hover {
    color: var(--ink);
    background: var(--surface-raised);
}

.seg-btn.is-active {
    background: var(--accent);
    border-color: var(--line);
    color: var(--accent-ink);
    transform: translate(2px, 2px);
    box-shadow: 0 0 0 var(--shadow-c);
}

.hero-row {
    display: flex;
    min-width: 0;
    align-items: baseline;
    gap: 0.5rem;
    padding: 0.5rem 0.15rem 0.6rem;
    border-bottom: 3px solid var(--line);
    transition: border-color 0.14s ease;
}

.hero-row:focus-within {
    border-bottom-color: var(--accent);
}

.hero-prefix {
    flex: 0 0 auto;
    color: var(--ink);
    font-size: 1.5rem;
    font-weight: 800;
    line-height: 1.1;
}

#heroInput {
    width: 100%;
    min-width: 0;
    padding: 0;
    border: 0;
    outline: 0;
    background: transparent;
    color: var(--ink);
    font-size: 1.9rem;
    font-weight: 800;
    line-height: 1.15;
    font-variant-numeric: tabular-nums;
}

#heroInput::placeholder {
    color: var(--text-faint);
}

.clear-btn {
    align-self: center;
    width: 2.2rem;
    height: 2.2rem;
    touch-action: manipulation;
}

.clear-btn svg {
    width: 0.95rem;
    height: 0.95rem;
}

@media (hover: hover) {
    .clear-btn:hover {
        color: var(--danger);
        background-color: rgba(217, 45, 45, 0.12);
    }
}

.threshold-hint {
    margin-top: 0.7rem;
    padding: 0.45rem 0.55rem;
    border: var(--border-w) solid var(--warning);
    border-radius: var(--radius-sm);
    color: var(--warning);
    background: var(--surface-soft);
    font-size: 0.66rem;
    font-weight: 800;
    letter-spacing: 0.02em;
}

.result-list {
    list-style: none;
}

.result-row {
    display: flex;
    width: 100%;
    min-height: 3.4rem;
    align-items: center;
    gap: 0.75rem;
    padding: 0.4rem 0.1rem;
    border: 0;
    border-bottom: var(--border-w) solid var(--line-soft);
    background: transparent;
    text-align: left;
}

.result-row:last-child {
    border-bottom: 0;
}

.result-label {
    flex: 0 0 auto;
    border: var(--border-w) solid var(--line);
    border-radius: 6px;
    background: var(--surface-soft);
    color: var(--ink);
    padding: 0.28rem 0.5rem;
    font-size: 0.6rem;
    font-weight: 800;
    letter-spacing: 0.12em;
    text-transform: uppercase;
}

.result-value {
    min-width: 0;
    flex: 1 1 auto;
    overflow: hidden;
    margin-left: auto;
    color: var(--ink);
    font-size: 1.3rem;
    font-weight: 800;
    font-variant-numeric: tabular-nums;
    text-align: right;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.result-value.is-zero {
    color: var(--text-faint);
}

.copy-btn {
    width: 2.3rem;
    height: 2.3rem;
    flex: 0 0 auto;
}

.copy-btn svg {
    width: 0.9rem;
    height: 0.9rem;
}

@media (hover: hover) {
    .copy-btn {
        opacity: 0;
    }

    .result-row:hover .copy-btn,
    .result-row:focus-within .copy-btn,
    .fact-row:hover .copy-btn,
    .fact-row:focus-within .copy-btn,
    .copy-btn:focus-visible {
        opacity: 1;
    }
}

.gross-toggle {
    display: flex;
    width: 100%;
    min-height: 3.4rem;
    align-items: center;
    gap: 0.75rem;
    padding: 0.4rem 0.15rem;
    border: 0;
    border-radius: var(--radius-sm);
    background: transparent;
    color: inherit;
    font: inherit;
    text-align: left;
    cursor: pointer;
    transition: background-color 0.14s ease;
}

.gross-toggle:hover {
    background: var(--surface-soft);
}

.gross-toggle[aria-expanded="true"] {
    border-bottom: var(--border-w) dashed var(--line-soft);
    border-radius: var(--radius-sm) var(--radius-sm) 0 0;
}

.tax-chevron {
    flex: 0 0 auto;
    width: 1rem;
    height: 1rem;
    color: var(--text-soft);
    transition: transform 0.2s ease;
}

.gross-toggle[aria-expanded="true"] .tax-chevron {
    transform: rotate(180deg);
}

.tax-panel {
    margin-top: 0.7rem;
    padding: 0.75rem;
    border: var(--border-w) solid var(--line);
    border-radius: var(--radius-sm);
    background: var(--surface-soft);
    box-shadow: var(--shadow-sm);
    animation: panel-in 0.18s ease;
}

@keyframes panel-in {
    from {
        opacity: 0;
        transform: translateY(-0.2rem);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.tax-label {
    display: block;
    margin-bottom: 0.45rem;
    color: var(--text-muted);
    font-size: 0.62rem;
    font-weight: 800;
    letter-spacing: 0.1em;
    text-transform: uppercase;
}

.tax-input-row {
    display: flex;
    min-height: 2.8rem;
    align-items: center;
    gap: 0.4rem;
    padding: 0.3rem 0.4rem 0.3rem 0.65rem;
    border: var(--border-w) solid var(--line);
    border-radius: var(--radius-sm);
    background: var(--surface);
    transition: background-color 0.14s ease, box-shadow 0.14s ease;
}

.tax-input-row:focus-within {
    background: var(--surface-raised);
    box-shadow: inset 0 0 0 2px var(--accent);
}

.tax-prefix {
    flex: 0 0 auto;
    color: var(--ink);
    font-size: 1rem;
    font-weight: 800;
}

.tax-input-row input {
    width: 100%;
    min-width: 0;
    padding: 0;
    border: 0;
    outline: 0;
    background: transparent;
    color: var(--ink);
    font-size: 1rem;
    font-weight: 800;
    font-variant-numeric: tabular-nums;
}

.tax-input-row input::placeholder {
    color: var(--text-faint);
}

.chip-btn {
    flex: 0 0 auto;
    min-height: 2.1rem;
    padding: 0.25rem 0.75rem;
    border: var(--border-w) solid var(--line);
    border-radius: 999px;
    background: var(--accent);
    color: var(--accent-ink);
    font-size: 0.68rem;
    font-weight: 800;
    white-space: nowrap;
    cursor: pointer;
    box-shadow: var(--shadow-btn);
    transition: transform 0.14s ease, box-shadow 0.14s ease, filter 0.14s ease;
}

.chip-btn:hover {
    transform: translate(-1px, -1px);
    box-shadow: var(--shadow-sm);
    filter: brightness(1.05);
}

.chip-btn:active {
    transform: translate(2px, 2px);
    box-shadow: 0 0 0 var(--shadow-c);
}

.tax-facts {
    margin-top: 0.4rem;
}

.fact-row {
    display: flex;
    min-height: 2rem;
    align-items: center;
    justify-content: space-between;
    gap: 0.75rem;
    color: var(--text-muted);
    font-size: 0.72rem;
    font-weight: 700;
}

.fact-row strong {
    color: var(--ink);
    font-size: 0.82rem;
    font-weight: 800;
    font-variant-numeric: tabular-nums;
}

.fact-value {
    display: inline-flex;
    align-items: center;
    gap: 0.15rem;
}

.text-btn {
    display: block;
    margin: 0.55rem 0.1rem 0 auto;
    padding: 0.15rem 0.35rem;
    border: 0;
    border-radius: 6px;
    background: transparent;
    color: var(--ink);
    font-size: 0.68rem;
    font-weight: 800;
    letter-spacing: 0.04em;
    text-decoration: underline;
    text-decoration-thickness: 2px;
    text-underline-offset: 3px;
    cursor: pointer;
}

.text-btn:hover {
    background: var(--accent-soft);
}

.panel-rates {
    display: flex;
    flex-direction: column;
    gap: 0.6rem;
}

.rate-line {
    display: flex;
    min-width: 0;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 0.6rem;
}

.devex-chip {
    min-width: 0;
    overflow: hidden;
    border: var(--border-w) solid var(--line-soft);
    border-radius: 6px;
    padding: 0.3rem 0.5rem;
    color: var(--text-muted);
    font-size: 0.64rem;
    font-weight: 800;
    letter-spacing: 0.04em;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.rate-exchange {
    display: inline-flex;
    flex: 0 0 auto;
    align-items: center;
    gap: 0.35rem;
    color: var(--text-muted);
    font-size: 0.66rem;
    font-weight: 800;
    letter-spacing: 0.04em;
    white-space: nowrap;
}

.rate-input {
    width: 4.6rem;
    min-height: 2.1rem;
    padding: 0.2rem 0.45rem;
    border: var(--border-w) solid var(--line);
    border-radius: 6px;
    outline: 0;
    background: var(--surface-raised);
    color: var(--ink);
    font-size: 0.76rem;
    font-weight: 800;
    text-align: right;
    font-variant-numeric: tabular-nums;
    box-shadow: var(--shadow-btn);
    transition: background-color 0.14s ease, border-color 0.14s ease;
    -moz-appearance: textfield;
    appearance: textfield;
}

.rate-input:focus {
    background: var(--surface);
    border-color: var(--accent);
}

.rate-input::-webkit-outer-spin-button,
.rate-input::-webkit-inner-spin-button {
    margin: 0;
    -webkit-appearance: none;
}

.status-line {
    display: flex;
    min-width: 0;
    align-items: center;
    justify-content: flex-start;
    gap: 0.45rem;
    padding: 0.4rem 0.55rem;
    border: var(--border-w) solid var(--line);
    border-radius: var(--radius-sm);
    background: var(--surface-soft);
    color: var(--text-soft);
    font-size: 0.62rem;
    font-weight: 800;
    letter-spacing: 0.04em;
    text-align: left;
    cursor: pointer;
    transition: color 0.14s ease, background-color 0.14s ease;
}

.status-line:hover {
    color: var(--ink);
    background: var(--accent-soft);
}

.refresh-btn {
    width: 2.1rem;
    height: 2.1rem;
    flex: 0 0 auto;
}

.refresh-btn svg {
    width: 0.9rem;
    height: 0.9rem;
}

.refresh-btn.is-loading svg {
    animation: spin 0.8s linear infinite;
}

.refresh-btn:disabled {
    cursor: progress;
    opacity: 0.6;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

.rate-dot {
    width: 0.55rem;
    height: 0.55rem;
    flex: 0 0 auto;
    border: 2px solid var(--ink);
    border-radius: 999px;
    background: var(--danger);
}

.rate-dot.is-live {
    background: var(--success);
}

.rate-dot.is-cache {
    background: var(--warning);
}

.rate-dot.is-manual {
    background: var(--accent);
}

.rate-dot.is-default {
    background: var(--danger);
}

.rate-dot.is-stale {
    background: var(--text-faint);
}

.rate-status {
    min-width: 0;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.toast {
    position: fixed;
    z-index: 200;
    bottom: max(1.25rem, env(safe-area-inset-bottom));
    left: 50%;
    padding: 0.55rem 1rem;
    border: var(--border-w) solid var(--line);
    border-radius: var(--radius-sm);
    background: var(--ink);
    color: var(--bg);
    font-size: 0.74rem;
    font-weight: 800;
    opacity: 0;
    pointer-events: none;
    box-shadow: var(--shadow-sm);
    transform: translateX(-50%) translateY(0.75rem);
    transition: opacity 0.22s ease, transform 0.22s ease;
    white-space: nowrap;
}

.toast.show {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
}

@media (hover: none) {
    .rate-input {
        font-size: 1rem;
        width: 5.1rem;
    }
}

@media (max-width: 480px) {
    .app-container {
        gap: 0.6rem;
    }

    .shell {
        gap: 0.6rem;
    }

    .panel {
        padding: 0.7rem 0.8rem;
    }

    .segmented {
        margin-bottom: 0.55rem;
    }

    .seg-btn {
        min-height: 2.25rem;
    }

    .hero-row {
        padding: 0.3rem 0.15rem 0.4rem;
    }

    .threshold-hint {
        margin-top: 0.5rem;
    }

    .result-row {
        min-height: 2.85rem;
        padding: 0.3rem 0.1rem;
    }

    .gross-toggle {
        min-height: 2.85rem;
        padding: 0.3rem 0.15rem;
    }

    .tax-panel {
        margin-top: 0.5rem;
        padding: 0.6rem;
    }

    .tax-input-row {
        min-height: 2.5rem;
    }

    .fact-row {
        min-height: 1.8rem;
    }

    .status-line {
        padding: 0.3rem 0.55rem;
    }
}

@media (max-width: 360px) {
    body {
        padding: 0.75rem;
    }

    .panel {
        padding: 0.75rem;
    }

    .hero-prefix {
        font-size: 1.3rem;
    }

    #heroInput {
        font-size: 1.6rem;
    }

    .result-value {
        font-size: 1.1rem;
    }

    .result-row {
        min-height: 3.1rem;
        gap: 0.55rem;
    }
}

:root[data-theme="dark"] .panel {
    border-width: 3px;
    box-shadow: 6px 6px 0 var(--accent);
}

@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;
    }
}