:root {
    --brand-orange: #de5f3b;
    --brand-orange-dark: #a84028;
    --brand-orange-soft: rgba(222, 95, 59, 0.18);
    --brand-blue: #12e3de;
    --brand-blue-dark: #069d9a;
    --brand-blue-soft: rgba(18, 227, 222, 0.13);
    --brand-bg: #242224;
    --brand-bg-deep: #1b191b;
    --brand-bg-elevated: #2b292b;
    --brand-bg-card: #343033;
    --brand-bg-card-hover: #3b373a;
    --brand-fg: #f4eee9;
    --brand-fg-muted: #aea6a6;
    --brand-fg-soft: #d5cbc5;
    --brand-border: rgba(244, 238, 233, 0.10);
    --brand-border-strong: rgba(244, 238, 233, 0.18);
    --brand-danger: #e2725b;
    --brand-success: #4eb98c;
    --shadow-card: 0 18px 42px rgba(0, 0, 0, 0.22);
    --shadow-soft: 0 10px 24px rgba(0, 0, 0, 0.18);
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 16px;
    --space-1: 4px;
    --space-2: 8px;
    --space-3: 12px;
    --space-4: 16px;
    --space-5: 24px;
    --space-6: 32px;
    --space-7: 48px;
    --font-sans: "Jost", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen, Ubuntu, Cantarell, "Helvetica Neue", Arial, sans-serif;
    --font-mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, monospace;
}

* {
    box-sizing: border-box;
}

html, body {
    margin: 0;
    padding: 0;
    background:
        linear-gradient(145deg, rgba(222, 95, 59, 0.08) 0%, transparent 28%),
        linear-gradient(315deg, rgba(168, 64, 40, 0.1) 0%, transparent 34%),
        var(--brand-bg-deep);
    color: var(--brand-fg);
    font-family: var(--font-sans);
    font-size: 15px;
    line-height: 1.45;
    min-height: 100%;
    -webkit-font-smoothing: antialiased;
}

a {
    color: var(--brand-blue);
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
}

h1, h2, h3, h4 {
    margin: 0 0 var(--space-3) 0;
    font-weight: 650;
    letter-spacing: -0.025em;
}

h1 { font-size: clamp(1.7rem, 2vw, 2.15rem); }
h2 { font-size: 1.25rem; }
h3 { font-size: 1.05rem; }

p {
    margin: 0 0 var(--space-3) 0;
}

code, pre {
    font-family: var(--font-mono);
    font-size: 0.85rem;
}

pre {
    background: rgba(27, 25, 27, 0.76);
    padding: var(--space-3) var(--space-4);
    border-radius: var(--radius-md);
    overflow-x: auto;
    border: 1px solid var(--brand-border);
}

hr {
    border: 0;
    border-top: 1px solid var(--brand-border);
    margin: var(--space-5) 0;
}

::selection {
    background: var(--brand-orange-soft);
}

input[type="number"] {
    appearance: textfield;
    -moz-appearance: textfield;
}

input[type="number"]::-webkit-outer-spin-button,
input[type="number"]::-webkit-inner-spin-button {
    appearance: none;
    -webkit-appearance: none;
    margin: 0;
}