body {
    font-family: var(--font-sans);
    background-color: #0D0E10;
    color: #ffffff;
    overflow-x: hidden;
}

.container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--space-6);
}

.container-narrow {
    max-width: var(--container-narrow);
}

.container-wide {
    max-width: var(--container-wide);
}

section {
    padding: var(--space-8) 0;
    position: relative;
    background-color: transparent;
}

section:first-of-type {
    padding-top: var(--space-6);
}

/* All sections except hero inherit dark background */
section:not(.hero) {
    color: #ffffff;
}

/* Light surface sections - Projects and Certificates */
#projects,
#certificates {
    background-color: var(--color-light-bg);
    margin: 0 var(--space-6);
    border-radius: var(--radius-xl);
    margin-bottom: var(--space-8);
    padding: var(--space-8) 0;
    color: var(--color-light-text);
}

#projects .container,
#certificates .container {
    padding: 0 var(--space-6);
}

/* Reduce gap between Education and Experience sections */
#education {
    padding-bottom: var(--space-7);
}

#experience {
    padding-top: var(--space-7);
    padding-bottom: var(--space-10);
}

/* Add extra top margin for certificates section */
#certificates {
    margin-top: var(--space-8);
}

/* Section headings - adapt to section context */
.section-tag {
    font-size: 14px;
    font-weight: 500;
    letter-spacing: 0.02em;
    color: var(--color-light-bg);
    margin-bottom: var(--space-5);
    display: inline-block;
    border-radius: 9999px;
    border: 1px solid var(--color-light-bg);
    padding: 0.5rem 1rem;
}

.section-heading {
    font-family: var(--font-display);
    font-size: clamp(36px, 5vw, 64px);
    font-weight: 500;
    line-height: 1.375;
    margin-bottom: var(--space-7);
    letter-spacing: -0.02em;
    color: var(--color-text);
}

/* Dark text on light surface sections (Projects, Certificates) */
#projects .section-heading,
#certificates .section-heading {
    color: var(--color-light-text);
    font-family: var(--font-display);
    font-weight: 500;
    line-height: 1.375;
    letter-spacing: -0.02em;
}

#projects .section-tag,
#certificates .section-tag {
    color: var(--color-light-text);
    border: 1px solid var(--color-light-text);
}

.grid {
    display: grid;
    gap: var(--space-6);
}

.grid-2 {
    grid-template-columns: repeat(2, 1fr);
}

.grid-3 {
    grid-template-columns: repeat(3, 1fr);
}

.grid-4 {
    grid-template-columns: repeat(4, 1fr);
}

@media (max-width: 1024px) {
    .grid-4 {
        grid-template-columns: repeat(2, 1fr);
    }

    .grid-3 {
        grid-template-columns: repeat(2, 1fr);
    }

    #projects,
    #certificates {
        margin: 0 var(--space-4);
        margin-bottom: var(--space-6);
    }
}

@media (max-width: 640px) {
    section {
        padding: var(--space-8) 0;
    }

    .container {
        padding: 0 var(--space-5);
    }

    #projects,
    #certificates {
        padding: var(--space-6) 0;
    }

    #experience {
        padding-bottom: var(--space-8);
    }

    #certificates {
        margin-top: var(--space-6);
    }

    .grid-2,
    .grid-3,
    .grid-4 {
        grid-template-columns: 1fr;
    }

    #projects,
    #certificates {
        margin: 0 var(--space-3);
        margin-bottom: var(--space-5);
        border-radius: var(--radius-lg);
    }
}