:root {

    --bg: #0A0F1E;
    --surface: #131929;
    --card: #1A2340;

    --accent: #4A90D9;
    --accent-hi: #7EB8F7;

    --text: #E8EDF5;
    --muted: #8A95A8;

    --border: #243050;

    --font-display: "Space Grotesk", sans-serif;
    --font-body: "Inter", sans-serif;
}


/* =========================================
   RESET
========================================= */

*,
*::before,
*::after {

    box-sizing: border-box;

    margin: 0;
    padding: 0;

}


html {

    scroll-behavior: smooth;

}


body {

    background: var(--bg);

    color: var(--text);

    font-family: var(--font-body);

    font-size: 16px;

    line-height: 1.7;

    -webkit-font-smoothing: antialiased;

}


img {

    display: block;

    width: 100%;

}


a {

    color: inherit;

    text-decoration: none;

}


button,
input,
textarea,
select {

    font: inherit;

}


/* =========================================
   CONTAINER
========================================= */

.container {

    width: min(90%, 1100px);

    margin: 0 auto;

}


/* =========================================
   HEADER / NAV
========================================= */

nav {

    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;

    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    min-width: 0;

    height: 64px;
    padding: 0 2.5rem;

    background: rgba(10, 15, 30, 0.85);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);

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

}


.nav-logo {

    font-family: var(--font-display);
    font-weight: 700;
    font-size: 1.1rem;
    letter-spacing: -0.02em;
    color: var(--text);
    text-decoration: none;

}


.nav-logo span {

    color: var(--accent);

}


.nav-links {

    display: flex;
    align-items: center;
    gap: 2rem;
    flex: 1 1 auto;
    min-width: 0;
    list-style: none;
    overflow-x: auto;
    overflow-y: hidden;
    white-space: nowrap;
    scrollbar-width: none;
    -ms-overflow-style: none;
    -webkit-overflow-scrolling: touch;

}


.nav-links::-webkit-scrollbar {

    display: none;

}


.nav-links li {

    flex: 0 0 auto;

}


.nav-links a {

    position: relative;

    color: var(--muted);
    text-decoration: none;
    font-size: 0.875rem;
    font-weight: 500;
    letter-spacing: 0.02em;
    white-space: nowrap;

    transition: color 0.2s ease;

}


.nav-links a::after {

    content: "";

    position: absolute;
    left: 0;
    right: 0;
    bottom: -0.6rem;

    height: 2px;
    background: var(--accent);

    transform: scaleX(0);
    transform-origin: center;
    transition: transform 0.2s ease;
    box-shadow: 0 0 16px rgba(74, 144, 217, 0.7);

}


.nav-links a:hover,
.nav-links a:focus-visible,
.nav-links a.active {

    color: var(--text);

}


.nav-links a:hover::after,
.nav-links a:focus-visible::after,
.nav-links a.active::after {

    transform: scaleX(1);

}


/* =========================================
   PAGE HEADER
========================================= */

.page-header {

    position: relative;

    padding: 8rem 0 7rem;

    overflow: hidden;

    text-align: center;

}


/* Technical grid */

.page-header::before {

    content: "";

    position: absolute;

    inset: 0;

    background-image:

        linear-gradient(
            var(--border) 1px,
            transparent 1px
        ),

        linear-gradient(
            90deg,
            var(--border) 1px,
            transparent 1px
        );

    background-size: 60px 60px;

    opacity: 0.22;

    mask-image:
        radial-gradient(
            ellipse 75% 100% at 50% 0%,
            black,
            transparent
        );

    pointer-events: none;

}


/* Ambient glow */

.page-header::after {

    content: "";

    position: absolute;

    width: 600px;
    height: 600px;

    top: 50%;
    left: 50%;

    transform: translate(-50%, -50%);

    background:
        radial-gradient(
            circle,
            rgba(74, 144, 217, 0.12) 0%,
            rgba(74, 144, 217, 0.08) 18%,
            transparent 66%
        );

    pointer-events: none;

}


.page-header .container {

    position: relative;

    z-index: 1;

    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;

}


/* =========================================
   EYEBROW
========================================= */

.eyebrow {

    display: inline-block;

    margin-bottom: 1.25rem;

    color: var(--accent);

    font-size: 0.72rem;

    font-weight: 600;

    letter-spacing: 0.2em;

    text-transform: uppercase;

}


/* =========================================
   PAGE TITLE
========================================= */

.page-header h1 {

    max-width: 850px;

    font-family: var(--font-display);

    font-size: clamp(
        2.8rem,
        7vw,
        5.5rem
    );

    font-weight: 700;

    line-height: 1.03;

    letter-spacing: -0.04em;

}


.page-header h1 span {

    display: block;

    color: var(--accent);

}


/* =========================================
   INTRO
========================================= */

.intro-text {

    max-width: 560px;

    margin-top: 1.75rem;

    color: var(--muted);

    font-size: 1rem;

    margin-left: auto;
    margin-right: auto;

}


/* =========================================
   PROJECT SECTION
========================================= */

.projects {

    padding: 6rem 0 8rem;

    background: var(--bg);

    border-top: 1px solid transparent;

    opacity: 0;
    transition: border-color 0.35s ease, opacity 0.35s ease;

}


.projects.visible {

    border-top-color: var(--border);
    opacity: 1;

}


.project-grid {

    display: grid;

    grid-template-columns:
        repeat(
            auto-fit,
            minmax(320px, 1fr)
        );

    gap: 1.5rem;

}


/* =========================================
   PROJECT CARD
========================================= */

.project-card {

    position: relative;

    display: flex;

    flex-direction: column;

    overflow: hidden;

    background: var(--surface);

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

    border-radius: 12px;

    transition:
        transform 0.25s ease,
        border-color 0.25s ease,
        box-shadow 0.25s ease;

}


.project-card:hover {

    transform: translateY(-6px);

    border-color:
        rgba(74, 144, 217, 0.65);

    box-shadow:
        0 18px 50px
        rgba(0, 0, 0, 0.25);

}


/* =========================================
   PROJECT IMAGE
========================================= */

.project-image {

    position: relative;

    width: 100%;

    aspect-ratio: 16 / 10;

    overflow: hidden;

    background: var(--card);

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

}


.project-image::after {

    content: "";

    position: absolute;

    inset: 0;

    background:
        linear-gradient(
            180deg,
            transparent 60%,
            rgba(10, 15, 30, 0.35)
        );

    pointer-events: none;

}


.project-image img {

    width: 100%;
    height: 100%;

    object-fit: cover;
    object-position: center;

    transition:
        transform 0.5s ease;

}


#nature-edge-preview {

    object-fit: cover;
    object-position: center;

}


.project-card:hover
.project-image img {

    transform: scale(1.035);

}


/* =========================================
   PROJECT CONTENT
========================================= */

.project-info {

    display: flex;

    flex-direction: column;

    flex: 1;

    padding: 2rem;

}


.project-type {

    margin-bottom: 0.65rem;

    color: var(--accent);

    font-size: 0.68rem;

    font-weight: 600;

    letter-spacing: 0.16em;

    text-transform: uppercase;

}


.project-info h2 {

    margin-bottom: 0.85rem;

    color: var(--text);

    font-family: var(--font-display);

    font-size: 1.45rem;

    font-weight: 600;

    letter-spacing: -0.025em;

    line-height: 1.2;

}


.project-info p:not(.project-type) {

    margin-bottom: 1.75rem;

    color: var(--muted);

    font-size: 0.87rem;

    line-height: 1.7;

}


/* =========================================
   PROJECT LINK
========================================= */

.project-link {

    display: inline-flex;

    align-items: center;

    gap: 0.5rem;

    width: fit-content;

    margin-top: auto;

    padding-bottom: 3px;

    color: var(--accent-hi);

    border-bottom: 1px solid
        rgba(126, 184, 247, 0.3);

    font-size: 0.8rem;

    font-weight: 600;

    transition:
        color 0.2s ease,
        border-color 0.2s ease,
        gap 0.2s ease;

}


.project-link span {

    transition:
        transform 0.2s ease;

}


.project-link:hover {

    color: var(--text);

    border-color: var(--accent-hi);

    gap: 0.75rem;

}


.project-link:hover span {

    transform: translateX(2px);

}


/* =========================================
   SCROLL REVEAL
========================================= */

.reveal {

    opacity: 0;

    transform: translateY(24px);

    transition:
        opacity 0.6s ease,
        transform 0.6s ease;

}


.reveal.visible {

    opacity: 1;

    transform: translateY(0);

}


/* Slight stagger between project cards */

.project-card:nth-child(1) {

    transition-delay: 0.05s;

}


.project-card:nth-child(2) {

    transition-delay: 0.15s;

}


.project-card:nth-child(3) {

    transition-delay: 0.25s;

}


/* =========================================
   FOOTER
========================================= */

.site-footer {

    padding: 2rem 0;

    background: var(--surface);

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

    color: var(--muted);

    font-size: 0.78rem;

    text-align: center;

}


/* =========================================
   RESPONSIVE
========================================= */

@media (max-width: 700px) {

    .container {

        width: min(92%, 600px);

    }


    .site-header {

        position: relative;

    }


    .nav-container {

        min-height: 62px;

    }


    nav {

        gap: 1rem;
        padding: 0 1rem;

    }


    .nav-logo {

        flex-shrink: 0;

    }


    .nav-links {

        gap: 1rem;
        margin-left: 0.75rem;
        padding-bottom: 0.15rem;

    }


    nav a {

        font-size: 0.76rem;

    }


    .page-header {

        padding: 6rem 0 5rem;

    }


    .page-header h1 {

        font-size: clamp(
            2.6rem,
            12vw,
            4rem
        );

    }


    .intro-text {

        font-size: 0.92rem;

    }


    .projects {

        padding: 4rem 0 6rem;

    }


    .project-grid {

        grid-template-columns: 1fr;

        gap: 1.25rem;

    }


    .project-info {

        padding: 1.5rem;

    }

}


@media (max-width: 450px) {

    .nav-container {

        align-items: flex-start;

        padding: 1rem 0;

        flex-direction: column;

        gap: 0.75rem;

    }


    nav {

        width: 100%;

        justify-content: space-between;

        gap: 1rem;

    }


    .page-header {

        padding-top: 5rem;

    }

}


/* =========================================
   ACCESSIBILITY
========================================= */

a:focus-visible {

    outline: 2px solid var(--accent-hi);

    outline-offset: 4px;

    border-radius: 3px;

}


/* =========================================
   REDUCED MOTION
========================================= */

@media (prefers-reduced-motion: reduce) {

    html {

        scroll-behavior: auto;

    }


    .reveal {

        opacity: 1;

        transform: none;

        transition: none;

    }


    .project-card,
    .project-image img,
    .project-link,
    .project-link span {

        transition: none;

    }


    .project-card:hover {

        transform: none;

    }


    .project-card:hover
    .project-image img {

        transform: none;

    }


    .project-link:hover {

        gap: 0.5rem;

    }


    .project-link:hover span {

        transform: none;

    }

}