:root{
    /* Radix Green accent */
    --green-9:  #46a758;
    --green-10: #3e9b4f;

    /* Radix Gray — Light */
    --gray-1: #fcfcfc;
    --gray-2: #f9f9f9;
    --gray-3: #f0f0f0;
    --gray-4: #e8e8e8;
    --gray-5: #e0e0e0;
    --gray-6: #d9d9d9;
    --gray-7: #cecece;
    --gray-8: #bbbbbb;
    --gray-9: #8d8d8d;
    --gray-10: #838383;
    --gray-11: #646464;
    --gray-12: #202020;
}

*{
    font-family: Arial, Helvetica, sans-serif;
    padding: 0;
    margin: 0;
    box-sizing: border-box;
}

@media (prefers-color-scheme: dark) {
    :root {
        /* Radix Gray — Dark */
        --gray-1: #030303;
        --gray-2: #111111;
        --gray-3: #222222;
        --gray-4: #2a2a2a;
        --gray-5: #313131;
        --gray-6: #3a3a3a;
        --gray-7: #484848;
        --gray-8: #606060;
        --gray-9: #6e6e6e;
        --gray-10: #7b7b7b;
        --gray-11: #b4b4b4;
        --gray-12: #eeeeee;
    }
}

body{
    background-color: var(--gray-1);
}

/* ── Container ── */
.container{
    width: 100%;
    max-width: 1320px;
    margin: 0 auto;
    padding: 0 24px;
}

/* ── Header ── */
header{
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    padding: 5px 0;
    background: transparent;
    transition: background 0.45s ease, backdrop-filter 0.45s ease;
}

header.scrolled{
    background: rgba(10, 10, 10, 0.82);
    backdrop-filter: blur(18px);
    -webkit-backdrop-filter: blur(18px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.07);
}

header .container{
    display: flex;
    justify-content: space-between;
    align-items: center;
}

/* ── Logo ── */
.logo{
    display: flex;
    align-items: center;
    gap: 5px;
    text-decoration: none;
    color: #ffffff;
    font-weight: 800;
    font-size: 22px;
    padding: 0px 10px;
    border-radius: 15px;
    transition: background 0.2s;
}

.logo:hover{
    background-color: rgba(255, 255, 255, 0.08);
}

.logo img{
    border-radius: 50%;
    width: 66px;
    height: 66px;
}

/* ── Desktop navigation ── */
.navigation{
    display: flex;
    align-items: center;
}

.navigation nav ul{
    display: flex;
    align-items: center;
    gap: 4px;
    list-style: none;
}

.navigation nav ul li a{
    display: block;
    text-decoration: none;
    color: rgba(255, 255, 255, 0.72);
    font-size: 15px;
    font-weight: 500;
    padding: 6px 14px;
    border-radius: 6px;
    transition: background 0.15s, color 0.15s;
}

.navigation nav ul li a:hover{
    background-color: rgba(255, 255, 255, 0.1);
    color: #ffffff;
}

.navigation nav ul li a.active{
    background-color: rgba(255, 255, 255, 0.13);
    color: #ffffff;
}

/* ── Burger button ── */
.menu-btn{
    display: none;
    flex-direction: column;
    gap: 8px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 10px;
    border-radius: 8px;
    transition: background 0.15s;
    z-index: 1001;
}

.menu-btn:hover{
    background-color: rgba(255, 255, 255, 0.08);
}

.menu-btn span{
    display: block;
    height: 2px;
    background-color: #ffffff;
    border-radius: 2px;
    transition: transform 0.35s cubic-bezier(.77,0,.18,1),
                width 0.35s cubic-bezier(.77,0,.18,1);
}

.menu-btn span:first-child{ width: 28px; }
.menu-btn span:last-child { width: 18px; }

.menu-btn.open span:first-child{
    transform: translateY(5px) rotate(45deg);
    width: 28px;
}
.menu-btn.open span:last-child{
    transform: translateY(-5px) rotate(-45deg);
    width: 28px;
}

/* ── Fullscreen menu ── */
.fullscreen-menu{
    position: fixed;
    inset: 0;
    background-color: #0a0a0a;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.35s cubic-bezier(.77,0,.18,1);
}

.fullscreen-menu.open{
    opacity: 1;
    pointer-events: all;
}

.fullscreen-menu__close{
    position: absolute;
    top: 24px;
    right: 24px;
    background: none;
    border: none;
    cursor: pointer;
    color: rgba(255, 255, 255, 0.6);
    padding: 10px;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: color 0.2s, background 0.2s;
}

.fullscreen-menu__close:hover{
    color: #ffffff;
    background-color: rgba(255, 255, 255, 0.08);
}

.fullscreen-menu nav ul{
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 8px;
    text-align: center;
}

.fullscreen-menu nav ul li{
    overflow: hidden;
}

.fullscreen-menu nav ul li a{
    display: block;
    text-decoration: none;
    color: #ffffff;
    font-size: clamp(42px, 10vw, 88px);
    font-weight: 800;
    line-height: 1.1;
    letter-spacing: -0.03em;
    transform: translateY(110%);
    transition: transform 0.5s cubic-bezier(.77,0,.18,1), color 0.2s;
}

.fullscreen-menu.open nav ul li:nth-child(1) a{ transform: translateY(0); transition-delay: 0.05s; }
.fullscreen-menu.open nav ul li:nth-child(2) a{ transform: translateY(0); transition-delay: 0.12s; }
.fullscreen-menu.open nav ul li:nth-child(3) a{ transform: translateY(0); transition-delay: 0.19s; }
.fullscreen-menu.open nav ul li:nth-child(4) a{ transform: translateY(0); transition-delay: 0.26s; }

.fullscreen-menu nav ul li a:hover{
    color: var(--green-9);
}

/* ── Hero ── */
.hero{
    height: 100vh;
    display: flex;
    align-items: center;
    background:
        linear-gradient(to right, rgba(0,0,0,0.82) 40%, rgba(0,0,0,0.3) 100%),
        url('../img/hero.jpg') center/cover no-repeat;
    color: #ffffff;
    overflow: hidden;
}

.hero-content{
    display: flex;
    flex-direction: column;
    gap: 24px;
    max-width: 680px;
}

.hero-label{
    font-size: 13px;
    font-weight: 600;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--green-9);
}

.hero-title{
    font-size: clamp(44px, 7vw, 80px);
    font-weight: 800;
    line-height: 1.05;
    letter-spacing: -0.03em;
    color: #ffffff;
}

.hero-title span{
    color: var(--green-9);
}

.hero-desc{
    font-size: clamp(16px, 2vw, 19px);
    color: rgba(255, 255, 255, 0.6);
    line-height: 1.7;
    max-width: 520px;
}

.hero-actions{
    display: flex;
    align-items: center;
    gap: 16px;
    flex-wrap: wrap;
    margin-top: 8px;
}

/* ── Buttons ── */
.btn-accent{
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background-color: var(--green-9);
    color: #ffffff;
    padding: 13px 28px;
    border-radius: 8px;
    font-size: 15px;
    font-weight: 600;
    text-decoration: none;
    border: none;
    cursor: pointer;
    transition: background 0.2s, transform 0.2s;
}

.btn-accent:hover{
    background-color: var(--green-10);
    transform: translateY(-2px);
}

.btn-ghost{
    display: inline-flex;
    align-items: center;
    gap: 6px;
    color: rgba(255, 255, 255, 0.75);
    padding: 13px 20px;
    border-radius: 8px;
    font-size: 15px;
    font-weight: 500;
    text-decoration: none;
    transition: color 0.2s, background 0.2s;
}

.btn-ghost:hover{
    color: #ffffff;
    background-color: rgba(255, 255, 255, 0.08);
}

/* ── About ── */
.about{
    min-height: 100vh;
    position: relative;
    padding: 120px 0;
    color: #ffffff;
    overflow: hidden;
}

.about-bg{
    position: absolute;
    inset: 0;
    background:
        linear-gradient(to bottom, rgba(0,0,0,0.7) 0%, rgba(0,0,0,0.55) 50%, rgba(0,0,0,0.75) 100%),
        url('../img/hero-about-us.jpeg') center/cover no-repeat;
    z-index: 0;
}

.about .container{
    position: relative;
    z-index: 1;
}

.about-inner{
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 64px;
    align-items: start;
}

.section-label{
    font-size: 12px;
    font-weight: 700;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--green-9);
    margin-bottom: 16px;
}

.about-title{
    font-size: clamp(36px, 5vw, 58px);
    font-weight: 800;
    line-height: 1.1;
    letter-spacing: -0.03em;
    margin-bottom: 24px;
}

.about-title span{
    color: var(--green-9);
}

.about-text{
    display: flex;
    flex-direction: column;
    gap: 14px;
    color: rgba(255,255,255,0.7);
    font-size: 16px;
    line-height: 1.75;
    margin-bottom: 40px;
}

.about-stack{
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.stack-label{
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: rgba(255,255,255,0.45);
    margin-bottom: 10px;
}

.stack-tags{
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.stack-tags span{
    padding: 5px 13px;
    border-radius: 20px;
    font-size: 13px;
    font-weight: 500;
    background: rgba(255,255,255,0.08);
    border: 1px solid rgba(255,255,255,0.12);
    color: rgba(255,255,255,0.85);
}

.stack-tags .tag-accent{
    background: rgba(70,167,88,0.18);
    border-color: rgba(70,167,88,0.4);
    color: #6dda80;
    font-weight: 700;
}

.about-right{
    display: flex;
    flex-direction: column;
    gap: 20px;
    padding-top: 52px;
}

.about-card{
    background: rgba(255,255,255,0.05);
    border: 1px solid rgba(255,255,255,0.1);
    border-radius: 16px;
    padding: 28px;
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    transition: background 0.2s, border-color 0.2s;
}

.about-card:hover{
    background: rgba(255,255,255,0.08);
    border-color: rgba(70,167,88,0.35);
}

.about-card__icon{
    font-size: 28px;
    margin-bottom: 14px;
}

.about-card h3{
    font-size: 17px;
    font-weight: 700;
    color: #ffffff;
    margin-bottom: 10px;
}

.about-card p{
    font-size: 14px;
    color: rgba(255,255,255,0.6);
    line-height: 1.7;
}

/* ── Projects ── */
.projects{
    position: relative;
    padding: 100px 0 120px;
    overflow: hidden;
}

.projects-bg{
    position: absolute;
    inset: 0;
    background:
        linear-gradient(to bottom, rgba(0,0,0,0.65) 0%, rgba(0,0,0,0.5) 50%, rgba(0,0,0,0.72) 100%),
        url('../img/hero-projects.jpeg') center/cover no-repeat;
    z-index: 0;
}

.projects .container{
    position: relative;
    z-index: 1;
}

.projects-heading{
    font-size: clamp(56px, 10vw, 120px);
    font-weight: 800;
    letter-spacing: -0.04em;
    line-height: 1;
    color: #ffffff;
    text-align: center;
    margin-bottom: 64px;
}

.projects-grid{
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 0px;
}

.project-card{
    display: block;
    aspect-ratio: 3 / 4;
    overflow: hidden;
    position: relative;
    cursor: pointer;
}

.project-card .carousel-track{
    display: flex;
    width: 100%;
    height: 100%;
    transition: transform 0.7s cubic-bezier(.77,0,.18,1);
}

.project-card .carousel-slide{
    flex: 0 0 100%;
    width: 100%;
    height: 100%;
}

.project-card .carousel-slide img{
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

/* ── Responsive ── */
/* ── Footer ── */
.footer{
    background: #060606;
    color: #ffffff;
    padding: 80px 0 40px;
    border-top: 1px solid rgba(255,255,255,0.06);
}

.footer .container{
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 40px;
}

.footer-name{
    font-size: clamp(64px, 12vw, 140px);
    font-weight: 800;
    letter-spacing: -0.04em;
    line-height: 1;
    color: #ffffff;
    text-align: center;
}

.footer-nav{
    display: flex;
    align-items: center;
    gap: 8px;
    flex-wrap: wrap;
    justify-content: center;
}

.footer-nav a{
    text-decoration: none;
    color: rgba(255,255,255,0.5);
    font-size: 14px;
    font-weight: 500;
    padding: 6px 14px;
    border-radius: 6px;
    transition: color 0.15s, background 0.15s;
}

.footer-nav a:hover{
    color: #ffffff;
    background: rgba(255,255,255,0.07);
}

.footer-socials{
    display: flex;
    align-items: center;
    gap: 6px;
}

.footer-socials a{
    display: flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    border-radius: 10px;
    color: rgba(255,255,255,0.45);
    border: 1px solid rgba(255,255,255,0.08);
    transition: color 0.2s, background 0.2s, border-color 0.2s;
}

.footer-socials a:hover{
    color: #ffffff;
    background: rgba(255,255,255,0.07);
    border-color: rgba(255,255,255,0.18);
}

.footer-copy{
    font-size: 13px;
    color: rgba(255,255,255,0.25);
    text-align: center;
    padding-top: 20px;
    border-top: 1px solid rgba(255,255,255,0.05);
    width: 100%;
}

/* ── Responsive ── */
@media (max-width: 1024px){
    .projects-grid{ grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px){
    .navigation{ display: none; }
    .menu-btn{ display: flex; }

    .hero-content{ gap: 20px; }
    .hero-actions{ gap: 12px; }

    .about{ padding: 80px 0; }
    .about-inner{ grid-template-columns: 1fr; gap: 40px; }
    .about-right{ padding-top: 0; }

    .projects{ padding: 80px 0 100px; }
    .projects-grid{ grid-template-columns: repeat(2, 1fr); gap: 12px; }
    .projects-heading{ margin-bottom: 40px; }

    .footer{ padding: 60px 0 32px; }
    .footer .container{ gap: 28px; }
}