:root {
    color-scheme: dark;
    --app-bg: radial-gradient(1200px 600px at 10% 10%, rgba(20, 80, 120, 0.35) 0%, transparent 60%),
        radial-gradient(800px 460px at 80% 20%, rgba(18, 60, 90, 0.35) 0%, transparent 55%),
        linear-gradient(160deg, #020814 0%, #03101f 55%, #05162a 100%);
    --app-panel: rgba(6, 20, 32, 0.92);
    --app-border: rgba(95, 234, 255, 0.25);
    --app-text: #eafcff;
    --app-muted: rgba(143, 179, 201, 0.9);
    --app-accent: #5feaff;
    --app-accent-2: #3bffb1;
    --app-warning: #ffdb7c;
    --app-input: rgba(5, 18, 30, 0.85);
    --app-shadow: 0 24px 48px rgba(0, 0, 0, 0.45);

    --bg-0: #040b14;
    --bg-1: #071427;
    --bg-2: #0a1c33;
    --cyan: var(--app-accent);
    --mint: var(--app-accent-2);
    --amber: var(--app-warning);
    --text: var(--app-text);
    --muted: var(--app-muted);
    --panel: var(--app-panel);
    --panel-border: var(--app-border);
}

html[data-theme="light"] {
    color-scheme: light;
    --app-bg: radial-gradient(1200px 600px at 12% 8%, rgba(88, 232, 248, 0.25) 0%, transparent 60%),
        radial-gradient(900px 520px at 80% 10%, rgba(24, 120, 248, 0.18) 0%, transparent 55%),
        linear-gradient(160deg, #f7f9fc 0%, #edf2f8 55%, #e8eef6 100%);
    --app-panel: rgba(255, 255, 255, 0.92);
    --app-border: rgba(24, 120, 248, 0.25);
    --app-text: #0b1320;
    --app-muted: rgba(11, 19, 32, 0.6);
    --app-accent: #1878f8;
    --app-accent-2: #2ccf8c;
    --app-warning: #d97c00;
    --app-input: rgba(255, 255, 255, 0.95);
    --app-shadow: 0 18px 34px rgba(20, 30, 40, 0.12);

    --bg-0: #f4f7fb;
    --bg-1: #eef3f9;
    --bg-2: #e3eaf4;
    --cyan: var(--app-accent);
    --mint: var(--app-accent-2);
    --amber: var(--app-warning);
    --text: var(--app-text);
    --muted: var(--app-muted);
    --panel: var(--app-panel);
    --panel-border: var(--app-border);
}

html[data-theme="blueprint"] {
    color-scheme: dark;
    --app-bg: radial-gradient(1200px 640px at 18% 12%, rgba(36, 160, 210, 0.25) 0%, transparent 60%),
        radial-gradient(900px 520px at 78% 18%, rgba(40, 120, 190, 0.22) 0%, transparent 55%),
        linear-gradient(160deg, #041326 0%, #06213b 55%, #082646 100%);
    --app-panel: rgba(7, 26, 44, 0.94);
    --app-border: rgba(120, 219, 255, 0.35);
    --app-text: #eaf3ff;
    --app-muted: rgba(169, 203, 223, 0.8);
    --app-accent: #58f1ff;
    --app-accent-2: #41ffb4;
    --app-warning: #ffdb7c;
    --app-input: rgba(6, 24, 40, 0.88);
    --app-shadow: 0 24px 48px rgba(0, 0, 0, 0.5);

    --bg-0: #041326;
    --bg-1: #07203a;
    --bg-2: #092a4b;
    --cyan: var(--app-accent);
    --mint: var(--app-accent-2);
    --amber: var(--app-warning);
    --text: var(--app-text);
    --muted: var(--app-muted);
    --panel: var(--app-panel);
    --panel-border: var(--app-border);
}

body {
    background: var(--app-bg);
    color: var(--app-text);
}

.app-shell {
    display: grid;
    --panel-width: 320px;
    grid-template-columns: var(--panel-width) 1fr;
    min-height: 100vh;
}

.app-shell.is-collapsed {
    --panel-width: 0px;
}

.app-panel {
    background: var(--app-panel);
    border-right: 1px solid var(--app-border);
    padding: 22px 18px 28px;
    display: flex;
    flex-direction: column;
    gap: 18px;
    max-height: 100vh;
    overflow: auto;
    box-shadow: var(--app-shadow);
}

.app-shell.is-collapsed .app-panel {
    width: 0;
    padding: 0;
    border: none;
    overflow: hidden;
    box-shadow: none;
}

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

.brand-mark {
    width: 40px;
    height: 40px;
    border-radius: 12px;
    border: 1px solid var(--app-border);
    background: none;
    box-shadow: inset 0 0 12px rgba(95, 234, 255, 0.2);
    object-fit: cover;
}

.app-brand h1 {
    margin: 0 0 4px;
    font-size: 1.4rem;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    color: var(--app-accent);
}

.app-brand p {
    margin: 0;
    font-size: 0.75rem;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--app-muted);
}

.panel-tools {
    display: flex;
    justify-content: flex-start;
    gap: 8px;
    flex-wrap: wrap;
}

.collapse-btn {
    min-width: 86px;
}

.panel-section {
    display: grid;
    gap: 10px;
}

.panel-section--boards {
    flex: 1 1 auto;
    min-height: 0;
    display: flex;
    flex-direction: column;
}

.panel-section--tools {
    margin-top: auto;
}

.section-title {
    color: var(--app-muted);
}

.field input {
    background: var(--app-input);
}

.helper-text {
    font-size: 0.75rem;
    color: var(--app-muted);
    line-height: 1.4;
}

.board-list {
    flex: 1 1 auto;
    min-height: 220px;
    max-height: 400px;
    overflow: auto;
    padding-right: 4px;
}

.board-item {
    background: color-mix(in oklab, var(--app-panel) 80%, transparent);
    max-height: 40px;
}

.board-item.editing {
    border-color: var(--app-accent);
    box-shadow: 0 0 12px rgba(95, 234, 255, 0.2);
}

.board-item input {
    width: 100%;
    border-radius: 8px;
    border: 1px solid color-mix(in oklab, var(--app-border) 80%, transparent);
    background: var(--app-input);
    color: var(--app-text);
    padding: 6px 8px;
    font-size: 0.85rem;
}

.app-stage {
    padding: 16px;
}

.canvas-shell {
    position: relative;
    height: calc(100vh - 32px);
    border-radius: 18px;
    overflow: hidden;
    border: 1px solid var(--app-border);
    box-shadow: inset 0 0 40px rgba(95, 234, 255, 0.08), var(--app-shadow);
}

.hint-center {
    position: absolute;
    top: 16px;
    right: 16px;
    z-index: 6;
    pointer-events: auto;
}

.hint-icon {
    width: 36px;
    height: 36px;
    border-radius: 999px;
    border: 1px solid var(--app-border);
    background: color-mix(in oklab, var(--app-panel) 88%, transparent);
    color: var(--app-text);
    font-weight: 700;
    font-size: 0.9rem;
    cursor: pointer;
    display: grid;
    place-items: center;
    box-shadow: var(--app-shadow);
}

.hint-panel {
    position: absolute;
    top: 46px;
    right: 0;
    width: min(260px, 40vw);
    border-radius: 14px;
    border: 1px solid var(--app-border);
    background: color-mix(in oklab, var(--app-panel) 88%, transparent);
    box-shadow: var(--app-shadow);
    color: var(--app-text);
    padding: 10px 12px 12px;
}

.hint-panel ul {
    margin: 0;
    padding-left: 18px;
    display: grid;
    gap: 6px;
    font-size: 0.75rem;
    color: var(--app-text);
}

.hint-center.is-collapsed .hint-panel {
    display: none;
}

.panel-expand {
    position: absolute;
    top: 16px;
    left: 16px;
    z-index: 6;
    border: 1px solid var(--app-border);
    background: color-mix(in oklab, var(--app-panel) 88%, transparent);
    color: var(--app-text);
    padding: 8px 12px;
    border-radius: 12px;
    cursor: pointer;
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 0.16em;
    display: none;
}

.app-shell.is-collapsed .panel-expand {
    display: inline-flex;
}

.app-shell.is-collapsed .status {
    left: 120px;
}

canvas {
    width: 100%;
    height: 100%;
    display: block;
}

.status {
    position: absolute;
    top: 16px;
    left: 16px;
    z-index: 4;
    margin: 0;
}

.input-bar {
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    bottom: 18px;
    display: grid;
    grid-template-columns: minmax(200px, 240px) minmax(0, 1fr) auto auto;
    gap: 16px;
    align-items: center;
    padding: 14px 16px;
    border-radius: 16px;
    border: 1px solid var(--app-border);
    background: linear-gradient(135deg,
            color-mix(in oklab, var(--app-panel) 92%, transparent),
            color-mix(in oklab, var(--app-panel) 70%, transparent));
    box-shadow: var(--app-shadow);
    z-index: 6;
    width: min(980px, calc(100% - 40px));
    pointer-events: auto;
}

.input-select,
.input-fields {
    display: grid;
    gap: 6px;
}

.input-select {
    position: relative;
}

.input-select label {
    font-size: 0.65rem;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    color: var(--app-muted);
}

.input-select select {
    height: 46px;
    border-radius: 12px;
    border: 1px solid color-mix(in oklab, var(--app-border) 85%, transparent);
    background: color-mix(in oklab, var(--app-panel) 88%, transparent);
    color: var(--app-text);
    padding: 10px 34px 10px 12px;
    font-size: 0.85rem;
    font-weight: 600;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    appearance: none;
}

.input-select::after {
    content: '';
    position: absolute;
    right: 14px;
    top: 38px;
    width: 8px;
    height: 8px;
    border-right: 2px solid var(--app-muted);
    border-bottom: 2px solid var(--app-muted);
    transform: rotate(45deg);
    pointer-events: none;
}

.input-fields {
    display: flex;
    flex-wrap: wrap;
    align-items: flex-end;
    gap: 12px;
    min-width: 0;
}

.input-field {
    display: grid;
    gap: 6px;
    min-width: 160px;
    flex: 1 1 160px;
}

.input-field label {
    font-size: 0.6rem;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    color: var(--app-muted);
}

.input-field input,
.input-field textarea,
.input-field select {
    border-radius: 10px;
    border: 1px solid var(--app-border);
    background: var(--app-input);
    color: var(--app-text);
    padding: 8px 10px;
    font-size: 0.85rem;
}

.input-field input[type="file"] {
    width: 100%;
    min-width: 0;
}

.input-field textarea {
    resize: vertical;
    min-height: 64px;
}

.input-btn {
    width: auto;
    min-width: 56px;
    height: 46px;
    border-radius: 14px;
    border: 1px solid var(--app-border);
    background: color-mix(in oklab, var(--app-panel) 85%, transparent);
    color: var(--app-text);
    font-weight: 600;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    white-space: nowrap;
    padding: 0 16px;
    cursor: pointer;
    transition: transform 0.12s ease, box-shadow 0.12s ease, border-color 0.12s ease;
}

.input-btn:hover:enabled {
    transform: translateY(-1px);
    box-shadow: 0 0 16px rgba(95, 234, 255, 0.2);
    border-color: var(--app-accent);
}

.input-btn.primary {
    background: linear-gradient(135deg, rgba(95, 234, 255, 0.24), rgba(59, 255, 177, 0.2));
    border-color: color-mix(in oklab, var(--app-accent) 60%, var(--app-border));
    min-width: 76px;
}

.input-btn.is-recording {
    background: linear-gradient(135deg, rgba(255, 110, 110, 0.3), rgba(255, 110, 110, 0.1));
    border-color: rgba(255, 110, 110, 0.6);
    box-shadow: 0 0 18px rgba(255, 110, 110, 0.35);
}

.input-btn:disabled {
    opacity: 0.45;
    cursor: not-allowed;
}

.input-btn.square {
    width: 46px;
    min-width: 46px;
    padding: 0;
}

.input-note {
    font-size: 0.7rem;
    color: var(--app-muted);
}

.ew-html-text-editor {
    white-space: pre-wrap;
    overflow-wrap: anywhere;
    word-break: break-word;
}

.ew-code-block {
    flex: 1 1 auto;
    min-height: 0;
    max-height: 500px;
    overflow-y: auto;
    overflow-x: hidden;
}

.ew-code-snippet {
    display: flex;
    flex-direction: column;
    height: 100%;
    overflow: hidden;
}

.ew-code-snippet .ew-node-body {
    display: flex;
    flex-direction: column;
    flex: 1;
    min-height: 0;
}

.app-panel .btn {
    border-color: color-mix(in oklab, var(--app-border) 85%, var(--app-accent) 25%);
    background: color-mix(in oklab, var(--app-panel) 86%, transparent);
    color: var(--app-text);
    box-shadow: 0 10px 18px rgba(0, 0, 0, 0.18);
}

html[data-theme="light"] .app-panel .btn {
    background: color-mix(in oklab, #ffffff 85%, var(--app-accent) 10%);
    border-color: color-mix(in oklab, var(--app-border) 80%, var(--app-accent) 35%);
    box-shadow: 0 8px 14px rgba(18, 24, 38, 0.08);
}

.app-panel .btn.ghost {
    background: transparent;
    border-color: color-mix(in oklab, var(--app-border) 80%, transparent);
}

html[data-theme="light"] .app-panel .btn.ghost {
    border-color: color-mix(in oklab, var(--app-border) 70%, var(--app-accent) 20%);
    color: var(--app-text);
}

@media (max-width: 1100px) {
    .app-shell {
        grid-template-columns: 1fr;
    }

    .app-panel {
        border-right: none;
        border-bottom: 1px solid var(--app-border);
        max-height: none;
    }

    .canvas-shell {
        height: 70vh;
    }

    .input-bar {
        width: min(760px, calc(100% - 40px));
    }
}

@media (max-width: 720px) {
    .input-bar {
        grid-template-columns: 1fr;
        gap: 8px;
        padding: 10px 12px;
    }

    .input-btn {
        width: 100%;
        height: 42px;
    }
}