@import url('https://fonts.googleapis.com/css2?family=DM+Sans:wght@400;500;600;700&family=Space+Grotesk:wght@400;500;600;700&display=swap');



:root {

    --background: #f5f6f3;

    --surface: #ffffff;

    --surface-alt: #ecefea;

    --text: #202522;

    --muted: #68716b;

    --border: #d7ddd8;

    --green: #315c4a;

    --green-light: #e1ebe5;

    --dark: #1e2722;

    --dark-light: #29342e;

}



* {

    box-sizing: border-box;

    margin: 0;

    padding: 0;

}


html {

    scroll-behavior: smooth;

}


body {

    min-height: 100vh;

    background: var(--background);

    color: var(--text);

    font-family: "DM Sans", sans-serif;

    line-height: 1.6;

}



.engineering-grid {

    position: fixed;

    inset: 0;

    z-index: -1;

    pointer-events: none;

    background-image:

        linear-gradient(
            rgba(49, 92, 74, 0.035) 1px,
            transparent 1px
        ),

        linear-gradient(
            90deg,
            rgba(49, 92, 74, 0.035) 1px,
            transparent 1px
        );

    background-size: 40px 40px;

}



.topbar {

    height: 82px;

    display: flex;

    align-items: center;

    padding: 0 45px;

    background: rgba(245, 246, 243, 0.96);

    border-bottom: 1px solid var(--border);

    position: sticky;

    top: 0;

    z-index: 100;

}


.brand {

    display: flex;

    flex-direction: column;

}


.brand strong {

    font-family: "Space Grotesk", sans-serif;

    font-size: 1rem;

    letter-spacing: 0.04em;

}


.brand span {

    color: var(--muted);

    font-size: 0.67rem;

    letter-spacing: 0.14em;

}




.app {

    display: flex;

    min-height: calc(100vh - 82px);

}




.sidebar {

    width: 235px;

    flex-shrink: 0;

    padding: 35px 18px;

    background: var(--dark);

}


.sidebar-title {

    margin-bottom: 20px;

    padding: 0 12px;

    color: #849088;

    font-size: 0.65rem;

    font-weight: 600;

    letter-spacing: 0.16em;

}


.tab-button {

    width: 100%;

    display: flex;

    align-items: center;

    gap: 13px;

    margin-bottom: 5px;

    padding: 12px;

    border: none;

    border-radius: 6px;

    background: transparent;

    color: #adb7b1;

    font-family: inherit;

    font-size: 0.8rem;

    text-align: left;

    cursor: pointer;

    transition: 0.2s ease;

}


.tab-button span {

    width: 25px;

    color: #6f7c74;

    font-family: "Space Grotesk", sans-serif;

    font-size: 0.7rem;

}


.tab-button:hover {

    background: rgba(255, 255, 255, 0.05);

    color: white;

}


.tab-button.active {

    background: var(--dark-light);

    color: white;

}


.tab-button.active span {

    color: #91b29f;

}




.content {

    width: 100%;

    max-width: 1250px;

    margin: auto;

    padding: 70px;

}



.tab-content {

    display: none;

    animation: appear 0.25s ease;

}


.tab-content.active {

    display: block;

}


@keyframes appear {

    from {

        opacity: 0;

        transform: translateY(8px);

    }

    to {

        opacity: 1;

        transform: translateY(0);

    }

}




.eyebrow {

    display: inline-block;

    margin-bottom: 15px;

    color: var(--green);

    font-size: 0.68rem;

    font-weight: 700;

    letter-spacing: 0.15em;

}


h1,
h2,
h3 {

    font-family: "Space Grotesk", sans-serif;

    line-height: 1.15;

}


h1 {

    margin-bottom: 22px;

    font-size: clamp(
        3rem,
        7vw,
        6rem
    );

    letter-spacing: -0.06em;

}


h1 span {

    color: var(--green);

}


.page-header {

    margin-bottom: 50px;

}


.page-header p {

    max-width: 650px;

    color: var(--muted);

}




.hero {

    max-width: 900px;

    padding: 60px 0 80px;

}


.hero h1 {

    margin-bottom: 25px;

}


.hero-text {

    max-width: 680px;

    margin-bottom: 30px;

    color: var(--muted);

    font-size: 1.1rem;

}


.hero-actions {

    display: flex;

    gap: 10px;

}


.primary-button,
.secondary-button {

    padding: 12px 18px;

    border-radius: 6px;

    font-family: inherit;

    font-size: 0.78rem;

    font-weight: 600;

    cursor: pointer;

    transition: 0.2s ease;

}


.primary-button {

    border: 1px solid var(--green);

    background: var(--green);

    color: white;

}


.primary-button:hover {

    background: #254938;

}


.secondary-button {

    border: 1px solid var(--border);

    background: white;

    color: var(--text);

}


.secondary-button:hover {

    border-color: var(--green);

    color: var(--green);

}




.home-grid {

    display: grid;

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

    gap: 18px;

}


.info-card {

    padding: 28px;

    background: var(--surface);

    border: 1px solid var(--border);

    border-radius: 8px;

}


.card-number {

    display: block;

    margin-bottom: 20px;

    color: var(--green);

    font-size: 0.7rem;

    font-weight: 700;

}


.info-card h2 {

    margin-bottom: 10px;

    font-size: 1.25rem;

}


.info-card p {

    color: var(--muted);

    font-size: 0.9rem;

}




.about-layout {

    display: grid;

    grid-template-columns: 1.4fr 0.8fr;

    gap: 70px;

}


.about-main h2 {

    max-width: 600px;

    margin-bottom: 25px;

    font-size: 2.3rem;

}


.about-main p {

    max-width: 650px;

    margin-bottom: 18px;

    color: var(--muted);

}


.about-details {

    border-top: 1px solid var(--border);

}


.detail {

    padding: 20px 0;

    border-bottom: 1px solid var(--border);

}


.detail span {

    display: block;

    margin-bottom: 5px;

    color: var(--muted);

    font-size: 0.65rem;

    font-weight: 700;

    letter-spacing: 0.1em;

}


.detail strong {

    font-family: "Space Grotesk", sans-serif;

    font-size: 0.95rem;

}




.project-grid {

    display: grid;

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

    gap: 18px;

}


.project-card {

    display: flex;

    flex-direction: column;

    min-height: 370px;

    padding: 30px;

    background: var(--surface);

    border: 1px solid var(--border);

    border-radius: 8px;

    transition:
        transform 0.2s ease,
        box-shadow 0.2s ease;

}


.project-card:hover {

    transform: translateY(-4px);

    box-shadow:
        0 15px 35px
        rgba(30, 40, 34, 0.08);

}


.project-top {

    display: flex;

    align-items: center;

    justify-content: space-between;

    margin-bottom: 35px;

}


.project-number {

    color: var(--green);

    font-size: 0.65rem;

    font-weight: 700;

    letter-spacing: 0.1em;

}




.project-status {

    padding: 5px 9px;

    border-radius: 4px;

    font-size: 0.6rem;

    font-weight: 700;

    letter-spacing: 0.08em;

}



.project-status.ongoing {

    background: #e8f0e9;

    color: #39704d;

    border: 1px solid #c9ddce;

}




.project-status.finished {

    background: #edf0ee;

    color: #59645e;

    border: 1px solid #d5dad6;

}


.project-card h2 {

    margin-bottom: 12px;

    font-size: 1.65rem;

}


.project-card p {

    margin-bottom: 25px;

    color: var(--muted);

}




.tags {

    display: flex;

    flex-wrap: wrap;

    gap: 6px;

    margin-bottom: 30px;

}


.tags span {

    padding: 5px 8px;

    background: var(--green-light);

    color: var(--green);

    border-radius: 4px;

    font-size: 0.62rem;

    font-weight: 700;

}




.project-link {

    display: flex;

    align-items: center;

    justify-content: space-between;

    margin-top: auto;

    padding-top: 18px;

    border-top: 1px solid var(--border);

    color: var(--text);

    font-size: 0.75rem;

    font-weight: 700;

    text-decoration: none;

    transition: 0.2s ease;

}


.project-link span {

    font-size: 1rem;

}


.project-link:hover {

    color: var(--green);

}




.skills-layout {

    display: grid;

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

    gap: 70px;

    max-width: 900px;

}


.skill-group h2 {

    margin-bottom: 20px;

    font-size: 1.5rem;

}


.skill-list {

    border-top: 1px solid var(--border);

}


.skill-item {

    display: flex;

    align-items: center;

    justify-content: space-between;

    padding: 15px 0;

    border-bottom: 1px solid var(--border);

}


.skill-item span:first-child {

    font-weight: 500;

}


.skill-item span:last-child {

    color: var(--muted);

    font-size: 0.62rem;

    letter-spacing: 0.08em;

}




.contact-section {

    max-width: 800px;

    padding-top: 60px;

}


.contact-section h1 {

    margin-bottom: 20px;

}


.contact-section p {

    max-width: 600px;

    margin-bottom: 30px;

    color: var(--muted);

    font-size: 1.05rem;

}


.contact-links {

    display: flex;

    flex-wrap: wrap;

    gap: 10px;

}


.contact-links a {

    padding: 11px 16px;

    border: 1px solid var(--border);

    border-radius: 6px;

    color: var(--text);

    font-size: 0.75rem;

    font-weight: 700;

    text-decoration: none;

    transition: 0.2s ease;

}


.contact-links a:hover {

    background: var(--green);

    border-color: var(--green);

    color: white;

}



footer {

    display: flex;

    justify-content: space-between;

    padding: 25px 45px;

    border-top: 1px solid var(--border);

    color: var(--muted);

    font-size: 0.65rem;

    letter-spacing: 0.08em;

}




@media (max-width: 850px) {


    .topbar {

        padding: 0 20px;

    }


    .app {

        flex-direction: column;

    }


    .sidebar {

        width: 100%;

        display: flex;

        gap: 4px;

        overflow-x: auto;

        padding: 8px;

    }


    .sidebar-title {

        display: none;

    }


    .tab-button {

        min-width: max-content;

        margin: 0;

    }


    .content {

        padding: 45px 20px;

    }


    .home-grid,
    .project-grid,
    .skills-layout,
    .about-layout {

        grid-template-columns: 1fr;

    }


    .about-layout {

        gap: 40px;

    }


    .hero {

        padding-top: 30px;

    }


    h1 {

        font-size: 3.2rem;

    }


    .hero-actions {

        flex-direction: column;

        align-items: flex-start;

    }


    footer {

        flex-direction: column;

        gap: 8px;

        text-align: center;

    }

}