:root {
    --bg: #0b1020;
    --bg-soft: #11182d;
    --panel: rgba(17, 24, 45, 0.78);
    --panel-strong: rgba(14, 20, 36, 0.94);
    --ink: #eef2ff;
    --muted: #9aa4bf;
    --line: rgba(148, 163, 184, 0.16);
    --line-strong: rgba(148, 163, 184, 0.26);
    --accent: #7dd3fc;
    --accent-strong: #38bdf8;
    --shadow: 0 20px 60px rgba(0, 0, 0, 0.35);
    --mono: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
    --sans: "Segoe UI", Inter, system-ui, sans-serif;
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    font-family: var(--sans);
    color: var(--ink);
    background:
        radial-gradient(circle at top right, rgba(56, 189, 248, 0.14), transparent 20%),
        radial-gradient(circle at 20% 0%, rgba(99, 102, 241, 0.14), transparent 24%),
        linear-gradient(180deg, #0a0f1d 0%, var(--bg) 100%);
}

.layout {
    max-width: 1280px;
    margin: 0 auto;
    padding: 32px 24px 64px;
}

.hero {
    display: grid;
    grid-template-columns: minmax(0, 1.8fr) minmax(280px, 0.8fr);
    gap: 24px;
    align-items: start;
    margin-bottom: 28px;
}

.hero-copy {
    padding: 8px 0;
}

.eyebrow {
    text-transform: uppercase;
    letter-spacing: 0.14em;
    font-size: 0.72rem;
    color: var(--accent);
    margin-bottom: 10px;
}

h1,
h2,
h3 {
    margin-top: 0;
    letter-spacing: -0.02em;
}

h1 {
    font-size: clamp(2.2rem, 4vw, 3.4rem);
    line-height: 1;
    margin-bottom: 14px;
}

h2 {
    font-size: 1.15rem;
    margin-bottom: 0;
}

h3 {
    font-size: 1rem;
    margin-bottom: 10px;
}

.lead {
    max-width: 720px;
    line-height: 1.65;
    color: var(--muted);
    margin-bottom: 18px;
}

.panel,
.status-card,
.card {
    background: var(--panel);
    border: 1px solid var(--line);
    border-radius: 20px;
    box-shadow: var(--shadow);
    backdrop-filter: blur(14px);
}

.panel,
.status-card {
    padding: 22px;
}

.grid {
    display: grid;
    gap: 24px;
}

.two-col {
    grid-template-columns: 1fr 1fr;
    margin-bottom: 28px;
}

.grid-form {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 14px;
}

.stack-form {
    display: grid;
    gap: 14px;
    margin-top: 18px;
}

.card {
    padding: 18px;
    margin-bottom: 14px;
    background: var(--panel-strong);
}

.error-card {
    border-color: rgba(248, 113, 113, 0.35);
    background: rgba(127, 29, 29, 0.22);
}

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

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

.section-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 18px;
}

.section-label {
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.12em;
    color: var(--muted);
    margin: 0 0 6px;
}

.hero-meta {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}

.chip {
    display: inline-flex;
    align-items: center;
    padding: 8px 12px;
    border-radius: 999px;
    border: 1px solid var(--line);
    color: var(--muted);
    background: rgba(255, 255, 255, 0.02);
    font-size: 0.86rem;
}

.muted {
    color: var(--muted);
    line-height: 1.6;
}

.focus-text {
    font-size: 1.15rem;
    line-height: 1.7;
    color: var(--ink);
    margin: 0 0 12px;
}

.meta-line {
    color: var(--muted);
    margin: 8px 0 0;
}

.meta-line strong {
    display: inline-block;
    min-width: 72px;
    color: var(--ink);
}

.data-list {
    margin: 14px 0 0;
    padding-left: 18px;
    color: var(--muted);
}

.data-list li + li {
    margin-top: 8px;
}

.mono {
    font-family: var(--mono);
    color: var(--ink);
}

input,
textarea,
button {
    font: inherit;
}

input,
textarea {
    width: 100%;
    padding: 12px 14px;
    border-radius: 14px;
    border: 1px solid var(--line);
    background: rgba(255, 255, 255, 0.03);
    color: var(--ink);
    outline: none;
}

input::placeholder,
textarea::placeholder {
    color: #72809d;
}

input:focus,
textarea:focus {
    border-color: var(--accent);
    box-shadow: 0 0 0 4px rgba(125, 211, 252, 0.08);
}

textarea {
    resize: vertical;
    min-height: 120px;
}

a {
    color: var(--accent);
}

.history-panel {
    border: 1px dashed var(--line-strong);
    border-radius: 16px;
    padding: 14px 16px;
    background: rgba(255, 255, 255, 0.02);
}

.history-panel summary {
    cursor: pointer;
    color: var(--muted);
    font-weight: 600;
    list-style: none;
}

.history-panel summary::-webkit-details-marker {
    display: none;
}

.history-panel[open] summary {
    margin-bottom: 16px;
    color: var(--ink);
}

.history-list {
    padding-top: 4px;
}

.inline-edit {
    min-width: 180px;
}

.inline-edit summary {
    list-style: none;
    cursor: pointer;
    color: var(--accent);
    text-align: right;
}

.inline-edit summary::-webkit-details-marker {
    display: none;
}

.inline-edit[open] {
    width: min(100%, 420px);
}

.inline-edit[open] summary {
    margin-bottom: 12px;
}

button {
    border: 1px solid rgba(125, 211, 252, 0.22);
    border-radius: 12px;
    padding: 11px 16px;
    background: linear-gradient(180deg, rgba(125, 211, 252, 0.16), rgba(56, 189, 248, 0.1));
    color: var(--ink);
    cursor: pointer;
    transition: 140ms ease;
}

button:hover {
    border-color: rgba(125, 211, 252, 0.42);
    background: linear-gradient(180deg, rgba(125, 211, 252, 0.22), rgba(56, 189, 248, 0.16));
    transform: translateY(-1px);
}

pre {
    white-space: pre-wrap;
    background: rgba(255, 255, 255, 0.02);
    padding: 14px;
    border-radius: 14px;
    border: 1px solid var(--line);
    overflow-x: auto;
    color: #d9e1f2;
    font-family: var(--mono);
    line-height: 1.65;
}

.status {
    color: var(--accent);
    font-weight: 600;
    margin-bottom: 14px;
}

.status-card {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.card-head form {
    margin: 0;
}

@media (max-width: 860px) {
    .hero,
    .two-col {
        grid-template-columns: 1fr;
    }

    .layout {
        padding: 20px 16px 48px;
    }
}