:root {
    color-scheme: dark;
    --ink: #e8e5dc;
    --muted: #8d98a4;
    --dim: #65717d;
    --night: #091017;
    --panel: #111a23;
    --panel-raised: #17222d;
    --line: #293642;
    --accent: #ff9f43;
    --accent-soft: rgba(255, 159, 67, 0.13);
    --mint: #65d6ad;
    --danger: #ff6b6b;
    font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* {
    box-sizing: border-box;
}

html, body, #app {
    min-height: 100%;
    margin: 0;
}

body {
    background:
        radial-gradient(circle at 12% 2%, rgba(62, 98, 123, 0.18), transparent 28rem),
        var(--night);
    color: var(--ink);
}

button, textarea {
    font: inherit;
}

button:focus-visible, textarea:focus-visible, .tree-row:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 2px;
}

.app-shell {
    width: min(1600px, 100%);
    min-height: 100vh;
    margin: 0 auto;
    padding: 0 30px;
}

.masthead {
    min-height: 104px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    border-bottom: 1px solid var(--line);
}

.brand-lockup {
    display: flex;
    align-items: center;
    gap: 15px;
}

.brand-mark {
    display: grid;
    place-items: center;
    width: 48px;
    height: 48px;
    border: 1px solid #44515d;
    border-radius: 4px;
    background: linear-gradient(145deg, #1d2a35, #101821);
    color: var(--accent);
    font: 700 19px/1 ui-monospace, "Cascadia Code", "SFMono-Regular", Consolas, monospace;
    box-shadow: inset 0 0 0 4px rgba(255, 255, 255, 0.015);
}

h1, h2, h3, p {
    margin: 0;
}

.brand-lockup h1 {
    font-size: 1.1rem;
    letter-spacing: 0.01em;
}

.brand-lockup p {
    margin-top: 3px;
    color: var(--muted);
    font-size: 0.78rem;
}

.privacy-badge {
    display: flex;
    align-items: center;
    gap: 9px;
    padding: 8px 12px;
    border: 1px solid rgba(101, 214, 173, 0.28);
    border-radius: 999px;
    color: #9fe5cb;
    background: rgba(101, 214, 173, 0.06);
    font-size: 0.75rem;
    font-weight: 650;
    letter-spacing: 0.02em;
}

.privacy-dot, .auto-status i {
    width: 7px;
    height: 7px;
    border-radius: 50%;
    background: var(--mint);
    box-shadow: 0 0 10px rgba(101, 214, 173, 0.72);
}

.workspace {
    display: grid;
    grid-template-columns: minmax(320px, 0.84fr) minmax(420px, 1.16fr);
    min-height: calc(100vh - 162px);
    border-inline: 1px solid var(--line);
}

.source-panel, .result-panel {
    min-width: 0;
    display: flex;
    flex-direction: column;
    background: rgba(17, 26, 35, 0.88);
}

.source-panel {
    border-right: 1px solid var(--line);
}

.result-panel {
    background: rgba(12, 19, 26, 0.93);
}

.panel-heading {
    min-height: 102px;
    padding: 24px 26px 20px;
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    gap: 20px;
    border-bottom: 1px solid var(--line);
}

.eyebrow {
    display: block;
    margin-bottom: 7px;
    color: var(--accent);
    font: 700 0.62rem/1 ui-monospace, "Cascadia Code", Consolas, monospace;
    letter-spacing: 0.15em;
}

.panel-heading h2 {
    color: #f4f1e8;
    font-size: clamp(1.15rem, 2vw, 1.5rem);
    font-weight: 620;
    letter-spacing: -0.025em;
}

.source-actions {
    display: flex;
    gap: 5px;
}

.text-button {
    padding: 7px 9px;
    border: 0;
    border-radius: 3px;
    background: transparent;
    color: var(--muted);
    cursor: pointer;
    font-size: 0.74rem;
    font-weight: 650;
}

.text-button:hover:not(:disabled) {
    background: var(--panel-raised);
    color: var(--ink);
}

.text-button:disabled {
    opacity: 0.35;
    cursor: default;
}

.payload-input {
    width: 100%;
    flex: 1;
    min-height: 470px;
    resize: none;
    padding: 25px 27px;
    border: 0;
    border-radius: 0;
    outline: 0;
    background:
        linear-gradient(90deg, transparent 47px, rgba(255,255,255,0.025) 48px, transparent 49px),
        transparent;
    color: #d7e1e8;
    caret-color: var(--accent);
    font: 0.82rem/1.72 ui-monospace, "Cascadia Code", "SFMono-Regular", Consolas, monospace;
    tab-size: 2;
}

.payload-input::placeholder {
    color: #56636f;
}

.input-footer {
    min-height: 44px;
    display: flex;
    align-items: center;
    gap: 18px;
    padding: 0 25px;
    border-top: 1px solid var(--line);
    color: var(--dim);
    font: 0.66rem/1 ui-monospace, "Cascadia Code", Consolas, monospace;
}

.auto-status {
    margin-left: auto;
    display: inline-flex;
    align-items: center;
    gap: 7px;
    color: #8ca99e;
}

.auto-status i {
    width: 5px;
    height: 5px;
}

.format-stamp {
    padding: 6px 9px;
    border: 1px solid rgba(255, 159, 67, 0.42);
    border-radius: 3px;
    color: var(--accent);
    background: var(--accent-soft);
    font: 700 0.65rem/1 ui-monospace, "Cascadia Code", Consolas, monospace;
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

.empty-state {
    flex: 1;
    display: grid;
    place-content: center;
    justify-items: center;
    padding: 50px;
    text-align: center;
}

.empty-glyph {
    display: flex;
    align-items: center;
    gap: 9px;
    color: #394854;
    font: 500 2.4rem/1 ui-monospace, "Cascadia Code", Consolas, monospace;
}

.empty-glyph i {
    width: 34px;
    height: 1px;
    background: var(--accent);
    box-shadow: 0 7px #495662, 0 -7px #495662;
}

.empty-state h3 {
    margin-top: 25px;
    color: #cbd2d5;
    font-size: 1rem;
}

.empty-state p {
    max-width: 370px;
    margin-top: 9px;
    color: var(--dim);
    font-size: 0.78rem;
    line-height: 1.6;
}

.detection-bar {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 7px;
    min-height: 52px;
    padding: 9px 24px;
    border-bottom: 1px solid var(--line);
}

.summary-label {
    margin-right: 3px;
    color: var(--dim);
    font: 0.65rem/1 ui-monospace, "Cascadia Code", Consolas, monospace;
    text-transform: uppercase;
    letter-spacing: 0.12em;
}

.detection-chip {
    padding: 6px 8px;
    border-radius: 3px;
    background: #192630;
    color: #a7b6be;
    font-size: 0.67rem;
}

.detection-chip b {
    color: var(--mint);
}

.detection-chip.primary {
    color: #aadfcf;
}

.detection-chip.warning {
    color: #ffc98f;
    background: rgba(255, 159, 67, 0.1);
}

.warning-list {
    padding: 10px 24px;
    border-bottom: 1px solid #4d3b2b;
    background: rgba(255, 159, 67, 0.07);
    color: #d9b68f;
    font-size: 0.71rem;
    line-height: 1.5;
}

.warning-list strong {
    margin-right: 6px;
    color: var(--accent);
    text-transform: uppercase;
    font-size: 0.62rem;
    letter-spacing: 0.09em;
}

.mode-tabs {
    display: flex;
    gap: 2px;
    padding: 10px 22px 0;
    border-bottom: 1px solid var(--line);
}

.mode-tabs button {
    position: relative;
    padding: 10px 13px 12px;
    border: 0;
    background: transparent;
    color: var(--dim);
    cursor: pointer;
    font-size: 0.72rem;
    font-weight: 650;
}

.mode-tabs button:hover {
    color: var(--ink);
}

.mode-tabs button.active {
    color: #f3ede4;
}

.mode-tabs button.active::after {
    content: "";
    position: absolute;
    right: 10px;
    bottom: -1px;
    left: 10px;
    height: 2px;
    background: var(--accent);
}

.output-surface {
    position: relative;
    flex: 1;
    min-height: 440px;
    overflow: auto;
}

.payload-output {
    min-width: max-content;
    min-height: 100%;
    margin: 0;
    padding: 25px 28px;
    color: #c9d8df;
    font: 0.79rem/1.7 ui-monospace, "Cascadia Code", "SFMono-Regular", Consolas, monospace;
    tab-size: 2;
    white-space: pre-wrap;
    overflow-wrap: anywhere;
}

.record-list {
    display: grid;
    gap: 12px;
    padding: 20px;
}

.record-card {
    border: 1px solid var(--line);
    border-left: 3px solid var(--mint);
    border-radius: 3px;
    background: #0e171f;
    overflow: hidden;
}

.record-card.invalid {
    border-left-color: var(--danger);
}

.record-card header {
    display: flex;
    justify-content: space-between;
    padding: 8px 12px;
    border-bottom: 1px solid var(--line);
    color: var(--muted);
    font: 0.63rem/1 ui-monospace, "Cascadia Code", Consolas, monospace;
    text-transform: uppercase;
    letter-spacing: 0.08em;
}

.record-card.invalid header span:last-child {
    color: var(--danger);
}

.record-card pre {
    margin: 0;
    padding: 13px 15px;
    color: #c9d8df;
    font: 0.76rem/1.65 ui-monospace, "Cascadia Code", Consolas, monospace;
    white-space: pre-wrap;
    overflow-wrap: anywhere;
}

.tree-view {
    min-width: max-content;
    padding: 17px 20px 90px;
    font: 0.75rem/1.45 ui-monospace, "Cascadia Code", Consolas, monospace;
}

.tree-row {
    min-height: 31px;
    display: flex;
    align-items: center;
    gap: 7px;
    padding: 3px 8px 3px 3px;
    border-radius: 3px;
    cursor: pointer;
}

.tree-row:hover {
    background: #17232d;
}

.tree-row.selected {
    background: rgba(255, 159, 67, 0.12);
    box-shadow: inset 2px 0 var(--accent);
}

.tree-toggle {
    width: 22px;
    height: 22px;
    display: grid;
    place-items: center;
    padding: 0;
    border: 0;
    border-radius: 2px;
    background: #21303b;
    color: #aebbc2;
    cursor: pointer;
    font: 1rem/1 ui-monospace, monospace;
}

.tree-toggle:hover {
    background: #2a3b48;
    color: white;
}

.tree-spacer {
    width: 22px;
}

.node-kind {
    width: 7px;
    height: 7px;
    border-radius: 1px;
    background: #7d8c96;
}

.node-kind.object, .node-kind.array {
    background: var(--accent);
}

.node-kind.element {
    background: #70b8e0;
}

.node-kind.attribute {
    background: #bca7ef;
}

.node-kind.embeddedjson {
    background: var(--mint);
}

.node-label {
    color: #e4e0d7;
    font-weight: 650;
}

.node-value {
    max-width: 440px;
    overflow: hidden;
    color: #8ca2ae;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.node-value::before {
    content: ": ";
    color: var(--dim);
}

.micro-tag {
    padding: 2px 5px;
    border: 1px solid rgba(101, 214, 173, 0.25);
    border-radius: 2px;
    color: var(--mint);
    font-size: 0.56rem;
    text-transform: uppercase;
}

.tree-children {
    margin-left: 13px;
    padding-left: 13px;
    border-left: 1px solid #2a3944;
}

.invalid-record {
    display: grid;
    gap: 5px;
    margin: 6px 0;
    padding: 10px;
    border-left: 2px solid var(--danger);
    background: rgba(255, 107, 107, 0.06);
    color: #db9e9e;
}

.invalid-record code {
    color: #b8a1a1;
}

.node-inspector {
    position: sticky;
    right: 16px;
    bottom: 14px;
    left: 16px;
    display: grid;
    grid-template-columns: auto 1fr;
    gap: 5px 14px;
    margin: 0 16px 14px;
    padding: 11px 14px;
    border: 1px solid #43515c;
    border-radius: 4px;
    background: rgba(21, 32, 42, 0.96);
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.35);
    font-size: 0.68rem;
}

.node-inspector span {
    grid-column: 1 / -1;
    color: var(--accent);
    font-family: ui-monospace, monospace;
}

.node-inspector code {
    color: #adbac2;
    overflow-wrap: anywhere;
}

.plain-message {
    color: var(--dim);
}

footer {
    min-height: 58px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 4px;
    color: #596774;
    font-size: 0.65rem;
    letter-spacing: 0.02em;
}

#blazor-error-ui {
    display: none;
    position: fixed;
    right: 16px;
    bottom: 16px;
    left: 16px;
    z-index: 1000;
    padding: 14px 45px 14px 18px;
    border: 1px solid #8a4848;
    border-radius: 4px;
    background: #3a1c20;
    color: white;
}

#blazor-error-ui a {
    color: #ffd0aa;
}

#blazor-error-ui .dismiss {
    position: absolute;
    right: 15px;
    cursor: pointer;
}

.loading-stage {
    min-height: 100vh;
    display: grid;
    place-content: center;
    justify-items: center;
    gap: 16px;
    color: var(--muted);
    font: 0.7rem/1 ui-monospace, monospace;
    letter-spacing: 0.12em;
    text-transform: uppercase;
}

.loading-mark {
    color: var(--accent);
    font-size: 2rem;
    animation: pulse 1.3s ease-in-out infinite;
}

@keyframes pulse {
    50% { opacity: 0.35; transform: scale(0.96); }
}

@media (max-width: 860px) {
    .app-shell {
        padding: 0 16px;
    }

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

    .source-panel {
        border-right: 0;
        border-bottom: 1px solid var(--line);
    }

    .payload-input {
        min-height: 340px;
    }

    .result-panel {
        min-height: 600px;
    }
}

@media (max-width: 520px) {
    .app-shell {
        padding: 0;
    }

    .masthead {
        min-height: 88px;
        padding: 0 16px;
    }

    .brand-lockup p {
        display: none;
    }

    .privacy-badge {
        padding: 7px 9px;
        font-size: 0.65rem;
    }

    .panel-heading {
        min-height: 88px;
        padding: 18px;
    }

    .payload-input, .payload-output {
        padding: 20px;
        font-size: 0.74rem;
    }

    .input-footer {
        padding: 0 18px;
        gap: 12px;
    }

    .auto-status {
        display: none;
    }

    .mode-tabs {
        padding-inline: 10px;
        overflow-x: auto;
    }

    .detection-bar, .warning-list {
        padding-inline: 16px;
    }

    footer {
        padding: 14px 16px;
        gap: 8px;
        flex-direction: column;
        align-items: flex-start;
    }
}