:root {
    color-scheme: dark;
    --background: #060912;
    --panel: rgba(11, 16, 30, 0.78);
    --panel-strong: rgba(13, 20, 39, 0.94);
    --panel-soft: rgba(255, 255, 255, 0.04);
    --border: rgba(255, 255, 255, 0.1);
    --text: #f5efe6;
    --muted: rgba(245, 239, 230, 0.72);
    --accent: #f0b76b;
    --accent-2: #7fc7ff;
    --shadow: 0 22px 80px rgba(0, 0, 0, 0.45);
}

* {
    box-sizing: border-box;
}

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

body {
    min-height: 100dvh;
    font-family: var(--font-sans), sans-serif;
    color: var(--text);
    background:
        radial-gradient(circle at top left, rgba(240, 183, 107, 0.24), transparent 30%),
        radial-gradient(circle at 85% 15%, rgba(127, 199, 255, 0.2), transparent 26%),
        linear-gradient(180deg, #07101d 0%, #04070d 100%);
}

body::before {
    content: "";
    position: fixed;
    inset: 0;
    pointer-events: none;
    background-image: linear-gradient(rgba(255, 255, 255, 0.025) 1px, transparent 1px), linear-gradient(90deg, rgba(255, 255, 255, 0.025) 1px, transparent 1px);
    background-size: 64px 64px;
    mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.85), transparent 95%);
    opacity: 0.55;
}

button,
textarea {
    font: inherit;
}

.app-shell {
    position: relative;
    z-index: 0;
    max-width: 1200px;
    margin: 0 auto;
    padding: 32px;
}

.ambient {
    position: fixed;
    inset: auto;
    border-radius: 999px;
    filter: blur(18px);
    opacity: 0.55;
    pointer-events: none;
}

.ambient-one {
    top: 56px;
    left: 4vw;
    width: 220px;
    height: 220px;
    background: rgba(240, 183, 107, 0.18);
}

.ambient-two {
    right: 8vw;
    top: 140px;
    width: 180px;
    height: 180px;
    background: rgba(127, 199, 255, 0.16);
}

.hero {
    margin-bottom: 24px;
    padding: 28px;
}

.panel {
    position: relative;
    overflow: hidden;
    border: 1px solid var(--border);
    border-radius: 28px;
    background: linear-gradient(180deg, var(--panel), var(--panel-strong));
    box-shadow: var(--shadow);
    backdrop-filter: blur(16px);
}

.panel::after {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(120deg, transparent, rgba(255, 255, 255, 0.05), transparent);
    opacity: 0.24;
    pointer-events: none;
}

.eyebrow,
.panel-kicker,
.hint,
dt,
.status-pill {
    font-family: var(--font-mono), monospace;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.eyebrow,
.panel-kicker {
    margin: 0 0 10px;
    color: var(--accent-2);
    font-size: 0.72rem;
}

.hero h1,
.panel h2 {
    margin: 0;
    line-height: 1.08;
}

.hero h1 {
    max-width: 12ch;
    font-size: clamp(2.4rem, 7vw, 5.5rem);
    letter-spacing: -0.05em;
}

.hero-copy {
    max-width: 60ch;
    margin: 16px 0 0;
    color: var(--muted);
    font-size: 1.02rem;
    line-height: 1.7;
}

.workspace {
    display: grid;
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 1fr);
    gap: 20px;
    align-items: start;
}

.form-panel,
.result-panel,
.trace-panel,
.output-panel {
    padding: 24px;
}

.form-panel {
    display: grid;
    gap: 16px;
    position: sticky;
    top: 24px;
}

.label {
    font-family: var(--font-mono), monospace;
    font-size: 0.78rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--muted);
}

.prompt-input {
    min-height: 300px;
    width: 100%;
    resize: vertical;
    border: 1px solid rgba(255, 255, 255, 0.12);
    border-radius: 22px;
    padding: 18px;
    color: var(--text);
    background: rgba(4, 7, 13, 0.5);
    outline: none;
    line-height: 1.65;
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.04);
}

.prompt-input:focus {
    border-color: rgba(127, 199, 255, 0.45);
    box-shadow: 0 0 0 4px rgba(127, 199, 255, 0.08);
}

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

.run-button {
    border: 0;
    border-radius: 999px;
    padding: 14px 20px;
    color: #090d15;
    background: linear-gradient(135deg, var(--accent), #ffe0a8);
    font-weight: 700;
    cursor: pointer;
    box-shadow: 0 14px 30px rgba(240, 183, 107, 0.24);
}

.run-button:disabled {
    opacity: 0.7;
    cursor: progress;
}

.hint {
    color: var(--muted);
    font-size: 0.72rem;
}

.error-text {
    margin: 0;
    color: #ffb1b1;
}

.results-column {
    display: grid;
    gap: 20px;
}

.panel-header {
    display: flex;
    justify-content: space-between;
    gap: 16px;
    align-items: start;
    margin-bottom: 18px;
}

.panel h2 {
    font-size: 1.35rem;
}

.status-pill {
    border-radius: 999px;
    padding: 8px 12px;
    font-size: 0.66rem;
    color: #08111c;
    background: linear-gradient(135deg, #c0ffb3, #f5ffe8);
}

.status-pill.muted {
    color: var(--text);
    background: rgba(255, 255, 255, 0.08);
}

.meta-grid {
    display: grid;
    gap: 16px;
    margin: 0;
}

.meta-grid dt {
    margin-bottom: 6px;
    color: var(--accent-2);
    font-size: 0.66rem;
}

.meta-grid dd {
    margin: 0;
    color: var(--muted);
    line-height: 1.6;
}

.trace-list {
    margin: 0;
    padding-left: 1.2rem;
    display: grid;
    gap: 12px;
    color: var(--muted);
    line-height: 1.6;
}

.plan-notes {
    margin: 18px 0 0;
    color: var(--accent-2);
    font-size: 0.92rem;
}

.output-box {
    margin: 0;
    white-space: pre-wrap;
    word-break: break-word;
    color: var(--text);
    font-family: var(--font-mono), monospace;
    line-height: 1.7;
    background: rgba(4, 7, 13, 0.48);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 22px;
    padding: 18px;
}

.empty-state {
    margin: 0;
    color: var(--muted);
    line-height: 1.6;
}

@media (max-width: 960px) {
    .app-shell {
        padding: 20px;
    }

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

    .form-panel {
        position: static;
    }

    .hero {
        padding: 22px;
    }
}

@media (max-width: 640px) {
    .app-shell {
        padding: 14px;
    }

    .hero h1 {
        max-width: none;
    }

    .form-panel,
    .result-panel,
    .trace-panel,
    .output-panel,
    .hero {
        padding: 18px;
        border-radius: 22px;
    }
}