:root {
    --danish-red: #C60C30;
    --charcoal: #111111;
    --warm-gray: #F7F7F7;
    --subtle-red-bg: #FDF2F3;
    --ease-out-expo: cubic-bezier(0.16, 1, 0.3, 1);
    --anthropic-bezier: cubic-bezier(0.16, 1, 0.3, 1);
}

@layer base {
    body {
        font-family: 'Inter', sans-serif;
        background-color: #ffffff;
        color: var(--charcoal);
        -webkit-font-smoothing: antialiased;
    }
}

/* Typography Standards */
.nav-link {
    font-size: 13px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    position: relative;
    transition: color 300ms var(--ease-out-expo);
}

.section-label {
    font-size: 11px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.4em;
    color: var(--danish-red);
}

.footer-link {
    font-size: 14px;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: rgba(17, 17, 17, 0.5);
    transition: color 300ms ease;
}

.body-text {
    font-size: 16px;
    line-height: 1.625;
    color: rgba(17, 17, 17, 0.7);
}

/* Motion System */
.reveal, .reveal-section, .reveal-element {
    opacity: 0;
    transform: translateY(12px);
    transition: opacity 600ms var(--ease-out-expo), transform 600ms var(--ease-out-expo);
}

.is-visible .reveal, .is-visible.reveal-section, .is-visible .reveal-element, .reveal-visible {
    opacity: 1;
    transform: translateY(0);
}

.reveal-word {
    display: inline-block;
    opacity: 0;
    transform: translateY(16px);
    transition: opacity 500ms var(--ease-out-expo), transform 500ms var(--ease-out-expo);
}

.reveal-word-visible {
    opacity: 1 !important;
    transform: translateY(0) !important;
}

.stagger-1 { transition-delay: 100ms; }
.stagger-2 { transition-delay: 200ms; }
.stagger-3 { transition-delay: 300ms; }
.stagger-4 { transition-delay: 400ms; }

.hairline-draw, .section-divider {
    width: 0;
    height: 1px;
    background-color: rgba(17, 17, 17, 0.1);
    transition: width 1200ms var(--ease-out-expo);
}

.is-visible .hairline-draw, .is-visible .section-divider, .hairline-visible {
    width: 100%;
}

/* Header & Nav */
.header-scrolled {
    box-shadow: 0 4px 20px -5px rgba(0,0,0,0.05);
    border-bottom: 1px solid rgba(0,0,0,0.08);
    background-color: rgba(255, 255, 255, 0.9);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -6px;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--danish-red);
    transition: width 300ms var(--ease-out-expo);
}

.nav-link:hover::after, .nav-link.active::after {
    width: 100%;
}

.nav-link.active {
    color: var(--charcoal);
}

/* Buttons */
.btn-motion, .btn-primary {
    transition: filter 250ms ease, transform 250ms var(--ease-out-expo), box-shadow 250ms ease;
}

.btn-motion:hover, .btn-primary:hover {
    filter: brightness(1.1);
    transform: scale(1.02);
}

/* Cards */
.card-motion, .capability-card {
    border: 1px solid transparent;
    transition: border-color 300ms ease, transform 300ms var(--ease-out-expo), box-shadow 300ms ease, background-color 300ms ease;
}

.card-motion:hover, .capability-card:hover {
    border-color: rgba(198, 12, 48, 0.1);
    box-shadow: 0 10px 30px -10px rgba(0,0,0,0.05);
    transform: translateY(-2px);
}