:root {
    --color-brand-bg: #0F1115;
    --color-brand-surface: #16191E;
    --color-brand-border: #262B33;
    --color-brand-accent: #10B981;
    --color-brand-text-dim: #94A3B8;
}

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--color-brand-bg);
    color: #E2E8F0;
    margin: 0;
    -webkit-font-smoothing: antialiased;
}

.mono-label {
    font-family: 'JetBrains Mono', monospace;
    font-size: 10px;
    text-transform: uppercase;
    letter-spacing: 0.2em;
    color: var(--color-brand-text-dim);
}

.tech-grid {
    background-image: radial-gradient(var(--color-brand-border) 1px, transparent 1px);
    background-size: 40px 40px;
}

.tech-border {
    border: 1px solid var(--color-brand-border);
}

.accent-text {
    color: var(--color-brand-accent);
}

.bg-brand-surface {
    background-color: var(--color-brand-surface);
}

.bg-brand-bg {
    background-color: var(--color-brand-bg);
}

input[type="range"] {
    -webkit-appearance: none;
    width: 100%;
    height: 4px;
    background: var(--color-brand-border);
    border-radius: 5px;
    outline: none;
}

input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 16px;
    height: 16px;
    background: var(--color-brand-accent);
    cursor: pointer;
    border-radius: 50%;
}

.faq-content {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease-out;
}

.faq-item.active .faq-content {
    max-height: 200px;
}

.faq-item.active .chevron {
    transform: rotate(180deg);
}

.animate-pulse-custom {
    animation: pulse 2s cubic-bezier(0.4, 0, 0.6, 1) infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: .5; }
}

.selection-accent::selection {
    background-color: var(--color-brand-accent);
    color: var(--color-brand-bg);
}