:root {
    --bg-primary: #000000;
    --bg-secondary: #0a0a0a;
    --text-primary: #ffffff;
    --text-accent: #03FA6E;
    --border-color: #1a1a1a;
    --transition: all 0.3s ease;
    --space: 10px;
    /* base spacing */
}

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

html {
    scroll-behavior: smooth
}

body {
    font-family: 'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', Arial;
    background: var(--bg-primary);
    color: var(--text-primary);
    -webkit-font-smoothing: antialiased
}

/* Layout container */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem
}

/* Section spacing utility */
section {
    padding: calc(var(--space) * 8) 0
}

/* Headings */
h1 {
    font-size: 3.2rem;
    line-height: 1.05;
    margin-bottom: 1rem
}

h2 {
    font-size: 2.2rem;
    margin-bottom: .75rem
}

p {
    color: rgba(255, 255, 255, 0.92);
    line-height: 1.7
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: .6rem;
    padding: .6rem 1rem;
    border-radius: 8px;
    background: transparent;
    color: var(--text-primary);
    border: 1px solid rgba(255, 255, 255, 0.06);
    cursor: pointer;
    transition: var(--transition);
    text-decoration: none
}

.btn.primary {
    background: var(--text-accent);
    color: #000;
    font-weight: 700;
    border: none
}

.btn:focus {
    outline: 3px solid rgba(3, 250, 110, 0.12);
    outline-offset: 3px
}

/* Small utilities */
.muted {
    color: rgba(255, 255, 255, 0.6)
}

.visually-hidden {
    position: absolute !important;
    height: 1px;
    width: 1px;
    overflow: hidden;
    clip: rect(1px, 1px, 1px, 1px);
    white-space: nowrap
}

/* Minimal responsive tweaks */
@media (max-width:900px) {
    .container {
        padding: 0 1.25rem
    }

    h1 {
        font-size: 2.4rem
    }
}

@media (max-width:576px) {
    h1 {
        font-size: 1.8rem
    }

    section {
        padding: calc(var(--space) * 6) 0
    }
}

/* End of base/core styles - section-specific rules live in css/{header,hero,portfolio,components,footer,about,services,contact,responsive}.css */