:root {
    color-scheme: light dark;
    --bg0: #0b1020;
    --bg1: #0e1630;
    --card: rgba(255, 255, 255, 0.08);
    --cardBorder: rgba(255, 255, 255, 0.14);
    --text: rgba(255, 255, 255, 0.92);
    --muted: rgba(255, 255, 255, 0.68);
    --shadow: 0 20px 60px rgba(0, 0, 0, 0.35);
    --radius: 16px;
    --primary: #7c5cff;
    --primary2: #20c997;
    --danger: #ff5c7a;
    --mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
    --sans: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Arial, "Apple Color Emoji", "Segoe UI Emoji";
}

/* Manual theme override */
html[data-theme="light"] {
    color-scheme: light;
    --bg0: #f6f7ff;
    --bg1: #eef1ff;
    --card: rgba(255, 255, 255, 0.9);
    --cardBorder: rgba(15, 23, 42, 0.10);
    --text: rgba(15, 23, 42, 0.92);
    --muted: rgba(15, 23, 42, 0.62);
    --shadow: 0 20px 60px rgba(15, 23, 42, 0.12);
}

html[data-theme="dark"] {
    color-scheme: dark;
    --bg0: #0b1020;
    --bg1: #0e1630;
    --card: rgba(255, 255, 255, 0.08);
    --cardBorder: rgba(255, 255, 255, 0.14);
    --text: rgba(255, 255, 255, 0.92);
    --muted: rgba(255, 255, 255, 0.68);
    --shadow: 0 20px 60px rgba(0, 0, 0, 0.35);
}

@media (prefers-color-scheme: light) {
    html:not([data-theme]) :root {
        --bg0: #f6f7ff;
        --bg1: #eef1ff;
        --card: rgba(255, 255, 255, 0.9);
        --cardBorder: rgba(15, 23, 42, 0.10);
        --text: rgba(15, 23, 42, 0.92);
        --muted: rgba(15, 23, 42, 0.62);
        --shadow: 0 20px 60px rgba(15, 23, 42, 0.12);
    }
}

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

html,
body {
    height: 100%;
}

body {
    margin: 0;
    font-family: var(--sans);
    line-height: 1.5;
    color: var(--text);
    background:
        radial-gradient(1200px 600px at 10% 0%, rgba(124, 92, 255, 0.25), transparent 60%),
        radial-gradient(900px 500px at 90% 10%, rgba(32, 201, 151, 0.22), transparent 60%),
        linear-gradient(180deg, var(--bg0), var(--bg1));
    padding: clamp(16px, 4vw, 40px);
}

a {
    color: inherit;
}

.wrap {
    min-height: 100%;
    display: grid;
    place-items: center;
}

.card {
    width: min(860px, 100%);
    background: var(--card);
    border: 1px solid var(--cardBorder);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    backdrop-filter: blur(12px);
    overflow: hidden;
}

.header {
    padding: clamp(18px, 3.2vw, 28px);
    border-bottom: 1px solid var(--cardBorder);
    display: grid;
    gap: 8px;
}

.title {
    margin: 0;
    font-size: clamp(22px, 3.2vw, 32px);
    letter-spacing: -0.02em;
}

.subtitle {
    margin: 0;
    color: var(--muted);
    font-size: 14px;
}

.content {
    padding: clamp(18px, 3.2vw, 28px);
    display: grid;
    gap: 16px;
}

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

.toolbarRight {
    margin-left: auto;
    display: flex;
    gap: 10px;
    align-items: center;
    flex-wrap: wrap;
}

.btn {
    appearance: none;
    border: 0;
    color: white;
    font-weight: 650;
    letter-spacing: 0.01em;
    padding: 12px 16px;
    border-radius: 12px;
    cursor: pointer;
    background: linear-gradient(135deg, var(--primary), var(--primary2));
    box-shadow: 0 10px 24px rgba(124, 92, 255, 0.25);
    transition: transform 120ms ease, filter 120ms ease, box-shadow 120ms ease;
}

.btn .spinner {
    width: 14px;
    height: 14px;
    border-radius: 999px;
    border: 2px solid rgba(255, 255, 255, 0.45);
    border-top-color: rgba(255, 255, 255, 0.95);
    display: none;
    animation: spin 700ms linear infinite;
    margin-right: 10px;
    vertical-align: -2px;
}

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

.btn[aria-busy="true"] .spinner {
    display: inline-block;
}

.btn:hover {
    transform: translateY(-1px);
    filter: saturate(1.05);
    box-shadow: 0 12px 28px rgba(124, 92, 255, 0.28);
}

.btn:active {
    transform: translateY(0px);
}

.btn[disabled] {
    opacity: 0.6;
    cursor: not-allowed;
    box-shadow: none;
    transform: none;
}

.btnSecondary {
    appearance: none;
    border: 1px solid var(--cardBorder);
    background: transparent;
    color: var(--text);
    font-weight: 650;
    padding: 10px 12px;
    border-radius: 12px;
    cursor: pointer;
    transition: transform 120ms ease, background 120ms ease;
}

.btnSecondary:hover {
    transform: translateY(-1px);
    background: rgba(255, 255, 255, 0.06);
}

@media (prefers-color-scheme: light) {
    .btnSecondary:hover {
        background: rgba(15, 23, 42, 0.04);
    }
}

.btnSecondary[disabled] {
    opacity: 0.55;
    cursor: not-allowed;
}

.hint {
    color: var(--muted);
    font-size: 13px;
}

.result {
    padding: 14px 14px;
    border: 1px solid var(--cardBorder);
    border-radius: 14px;
    background: rgba(0, 0, 0, 0.06);
}

@media (prefers-color-scheme: light) {
    .result {
        background: rgba(15, 23, 42, 0.035);
    }
}

.rows {
    display: grid;
    gap: 10px;
    margin: 0;
}

.row {
    display: grid;
    grid-template-columns: 160px 1fr;
    gap: 10px;
    align-items: baseline;
}

@media (max-width: 520px) {
    .row {
        grid-template-columns: 1fr;
        gap: 4px;
    }
}

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

.value {
    font-family: var(--mono);
    overflow-wrap: anywhere;
}

.status {
    font-size: 13px;
    color: var(--muted);
}

.status.error {
    color: var(--danger);
}

.toast {
    position: fixed;
    left: 50%;
    bottom: 18px;
    transform: translateX(-50%);
    background: rgba(0, 0, 0, 0.65);
    color: white;
    padding: 10px 12px;
    border-radius: 999px;
    font-size: 13px;
    border: 1px solid rgba(255, 255, 255, 0.18);
    backdrop-filter: blur(10px);
    box-shadow: 0 16px 40px rgba(0, 0, 0, 0.25);
    opacity: 0;
    pointer-events: none;
    transition: opacity 140ms ease, transform 140ms ease;
}

.toast.show {
    opacity: 1;
    transform: translateX(-50%) translateY(-4px);
}

.footer {
    padding: 14px clamp(18px, 3.2vw, 28px);
    border-top: 1px solid var(--cardBorder);
    color: var(--muted);
    font-size: 12px;
}

.footer p {
    margin: 0;
}