:root {
    --bg-color: #050816;
    --bg-alt: #0b1020;
    --accent: #38bdf8;
    --accent-soft: rgba(56, 189, 248, 0.2);
    --text-primary: #f9fafb;
    --text-muted: #9ca3af;
    --card-bg: #111827;
    --border-soft: rgba(156, 163, 175, 0.2);
    --radius-xl: 18px;
    --radius-2xl: 24px;
    --shadow-soft: 0 18px 40px rgba(15, 23, 42, 0.7);
    --transition-fast: 0.2s ease-out;
    --transition-normal: 0.3s ease;
    --font-family-base: system-ui, -apple-system, BlinkMacSystemFont, "SF Pro Text",
        "Segoe UI", sans-serif;
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html, body {
    background: radial-gradient(circle at top, #1f2937 0, #020617 45%);
    color: var(--text-primary);
    font-family: var(--font-family-base);
    scroll-behavior: smooth;
}

body {
    min-height: 100vh;
}

#app {
    max-width: 1120px;
    margin: 0 auto;
    padding: 1.5rem 1.25rem 3rem;
}

.section {
    margin-top: 5rem;
}

.section-title {
    font-size: 1.9rem;
    font-weight: 700;
    letter-spacing: 0.04em;
    margin-bottom: 1.5rem;
}

.section-subtitle {
    font-size: 0.9rem;
    color: var(--accent);
    text-transform: uppercase;
    letter-spacing: 0.2em;
    margin-bottom: 0.5rem;
}

.card {
    background: linear-gradient(145deg, #020617, #020617) padding-box,
                linear-gradient(135deg, rgba(56, 189, 248, 0.25),
                                      rgba(129, 140, 248, 0.25)) border-box;
    border-radius: var(--radius-2xl);
    border: 1px solid transparent;
    box-shadow: var(--shadow-soft);
    padding: 1.5rem;
}

.chip {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0.25rem 0.7rem;
    border-radius: 999px;
    background: var(--accent-soft);
    color: var(--accent);
    font-size: 0.75rem;
}

@media (min-width: 900px) {
    #app {
        padding-top: 2.5rem;
    }
}