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

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

html{
    scroll-behavior:smooth;
}

body{
    font-family:'Inter',sans-serif;
    background:#070710;
    color:white;
    overflow-x:hidden;
    min-height:100vh;
}

/* =========================================================
   VARIABLES
========================================================= */

:root{
    --bg:#070710;
    --bg2:#0d0d18;
    --glass:rgba(255,255,255,0.07);
    --border:rgba(255,255,255,0.1);

    --neon:#3d8bff;
    --violet:#a855f7;
    --cyan:#00e5ff;
    --green:#2dff9b;

    --text:#f4f7ff;
    --muted:#9ca3af;

    --radius:26px;
    --blur:18px;
    --shadow:
        0 0 30px rgba(61,139,255,0.15),
        0 10px 40px rgba(0,0,0,0.5);

    --transition:0.35s cubic-bezier(.2,.8,.2,1);
}

/* =========================================================
   THREE BACKGROUND
========================================================= */

#bg-canvas{
    position:fixed;
    inset:0;
    z-index:-2;
}

/* =========================================================
   GLOBAL
========================================================= */

.container{
    width:min(1280px,92%);
    margin:auto;
}

.gradient-text{
    background:linear-gradient(135deg,var(--cyan),var(--violet),#ffffff);
    -webkit-background-clip:text;
    -webkit-text-fill-color:transparent;
}

.section{
    min-height:100vh;
    padding:110px 0 80px;
    display:none;
    opacity:0;
    transform:scale(0.97) translateY(20px);
    transition:
        opacity .6s ease,
        transform .6s ease;
}

.section.active{
    display:block;
    opacity:1;
    transform:scale(1) translateY(0);
}

.section-title{
    font-size:clamp(2rem,5vw,5rem);
    line-height:1;
    font-weight:800;
    margin-bottom:20px;
}

.section-subtitle{
    color:var(--muted);
    max-width:760px;
    line-height:1.7;
    font-size:1rem;
}

.glass{
    background:var(--glass);
    border:1px solid var(--border);
    backdrop-filter:blur(var(--blur));
    -webkit-backdrop-filter:blur(var(--blur));
    box-shadow:var(--shadow);
}

.btn{
    position:relative;
    overflow:hidden;
    border:none;
    cursor:pointer;
    padding:16px 30px;
    border-radius:999px;
    font-weight:700;
    color:white;
    background:linear-gradient(135deg,var(--neon),var(--violet));
    transition:var(--transition);
    box-shadow:
        0 0 20px rgba(61,139,255,.4),
        0 0 40px rgba(168,85,247,.25);
}

.btn:hover{
    transform:translateY(-3px) scale(1.02);
    box-shadow:
        0 0 30px rgba(61,139,255,.6),
        0 0 60px rgba(168,85,247,.45);
}

.btn:active{
    transform:scale(.97);
}


.nav{
    position:fixed;
    top: 20px;
    left:50%;
    transform:translateX(-50%);
    width:min(1100px,92%);
    z-index:999;
    border-radius:999px;
    padding:12px 18px;
    display:flex;
    align-items:center;
    justify-content:space-between;
}

.logo{
    font-size:1.2rem;
    font-weight:800;
    letter-spacing:1px;
    text-decoration:none;
}

/* =========================================================
   BURGER MENU
========================================================= */

.burger{
    display:none;
    width:52px;
    height:52px;
    border:none;
    border-radius:16px;
    background:rgba(255,255,255,.06);
    border:1px solid rgba(255,255,255,.1);
    cursor:pointer;
    align-items:center;
    justify-content:center;
    flex-direction:column;
    gap:5px;
}

.burger span{
    width:22px;
    height:2px;
    border-radius:999px;
    background:white;
    transition:.3s;
}

.mobile-menu{
    position:fixed;
    top:95px;
    right:4%;
    width:240px;
    border-radius:24px;
    padding:18px;
    display:flex;
    flex-direction:column;
    gap:12px;
    z-index:998;
    opacity:0;
    pointer-events:none;
    transform:translateY(-10px);
    transition:.35s ease;
}

.mobile-menu.active{
    opacity:1;
    pointer-events:auto;
    transform:translateY(0);
}

.mobile-menu a{
    text-decoration:none;
    color:white;
    padding:14px 16px;
    border-radius:14px;
    background:rgba(255,255,255,.04);
    transition:.3s;
}

.mobile-menu a:hover{
    background:rgba(255,255,255,.1);
}

/* =========================================================
   MOBILE
========================================================= */

@media(max-width:768px){

    .nav-links{
        display:none;
    }

    .burger{
        display:flex;
    }
}

.nav-links{
    display:flex;
    gap:14px;
}

.nav-links a{
    color:var(--text);
    text-decoration:none;
    font-size:.95rem;
    opacity:.85;
    transition:var(--transition);
}

.nav-links a:hover{
    opacity:1;
    color:var(--cyan);
}

/* =========================================================
   HERO
========================================================= */

.hero{
    display:grid;
    grid-template-columns:1fr 1fr;
    gap:60px;
    align-items:center;
    min-height:90vh;
}

.hero h1{
    font-size:clamp(3.5rem,10vw,8rem);
    line-height:.9;
    font-weight:900;
    margin-bottom:20px;
}

.hero p{
    color:var(--muted);
    font-size:1.15rem;
    line-height:1.8;
    max-width:580px;
    margin-bottom:30px;
}

.hero-visual{
    position:relative;
    display:flex;
    align-items:center;
    justify-content:center;
    perspective:1600px;
    min-height:500px;
}

/* =========================================================
   HERO FOOT
========================================================= */

.foot-wrapper{
    position:relative;
    width:520px;
    display:flex;
    align-items:center;
    justify-content:center;

    animation:floatFoot 6s ease-in-out infinite;

    background:transparent;

    filter:
        drop-shadow(0 0 25px rgba(61,139,255,.55))
        drop-shadow(0 0 60px rgba(168,85,247,.35));

    transform-style:preserve-3d;
}

.foot-image{
    width:100%;
    height:auto;
    object-fit:contain;

    background:transparent;

    filter:
        brightness(1.1)
        contrast(1.1)
        saturate(1.2)
        drop-shadow(0 0 20px rgba(61,139,255,.5));

    opacity:.95;

    transition:
        transform .6s ease,
        filter .6s ease;
}

.foot-wrapper:hover .foot-image{
    transform:
        scale(1.03)
        rotate(-2deg);

    filter:
        brightness(1.2)
        saturate(1.3);
}

@keyframes floatFoot{

    0%,100%{
        transform:
            translateY(0px)
            rotateZ(-2deg)
            rotateX(6deg);
    }

    50%{
        transform:
            translateY(-20px)
            rotateZ(2deg)
            rotateX(10deg);
    }
}
/* =========================================================
   HOW IT WORKS
========================================================= */

.cards-grid{
    display:grid;
    grid-template-columns:repeat(3,1fr);
    gap:24px;
    margin-top:60px;
}

.card{
    border-radius:var(--radius);
    padding:32px;
    position:relative;
    overflow:hidden;
    transition:var(--transition);
    transform-style:preserve-3d;
    will-change:transform;
}

.card:hover{
    transform:translateY(-10px);
}

.card h3{
    margin-top:18px;
    margin-bottom:10px;
    font-size:1.3rem;
}

.card p{
    color:var(--muted);
    line-height:1.7;
}

.icon-circle{
    width:70px;
    height:70px;
    border-radius:50%;
    display:flex;
    align-items:center;
    justify-content:center;
    font-size:1.8rem;
    background:linear-gradient(135deg,var(--neon),var(--violet));
    box-shadow:0 0 30px rgba(61,139,255,.4);
}
.custom-icon{
    overflow:hidden;
    padding:0;
}

.custom-icon img{
    max-width:88%;
    max-height:88%;
    width:auto;
    height:auto;
    object-fit:contain;
    display:block;

    transition:
        transform .4s ease,
        filter .4s ease;

    filter:
        brightness(1.7)
        contrast(1.35)
        saturate(1.4)
        drop-shadow(0 0 8px rgba(0,229,255,.7))
        drop-shadow(0 0 14px rgba(168,85,247,.5));

    opacity:1;
}

.card:hover .custom-icon img{
    transform:scale(1.08);

    filter:
        brightness(2)
        contrast(1.5)
        saturate(1.6)
        drop-shadow(0 0 12px rgba(0,229,255,.9))
        drop-shadow(0 0 24px rgba(168,85,247,.8));
}
/* =========================================================
   BENTO
========================================================= */

.bento{
    display:grid;
    grid-template-columns:2fr 1fr;
    gap:24px;
    margin-top:80px;
}

.bento-left{
    min-height:400px;
    overflow:hidden;
    position:relative;
}

.bento-left img{
    width:100%;
    height:100%;
    object-fit:cover;

    filter:
        brightness(1.05)
        contrast(1.08)
        saturate(1.15);

    transition:
        transform .7s ease,
        filter .7s ease;
}

.bento-left:hover img{
    transform:scale(1.04);

    filter:
        brightness(1.12)
        contrast(1.12)
        saturate(1.25);
}

.bento-right{
    display:grid;
    gap:24px;
}

.bento-box{
    padding:30px;
    border-radius:var(--radius);
}

.bento-box h4{
    margin-bottom:10px;
}

/* =========================================================
   TESTIMONIALS
========================================================= */

.testimonials{
    margin-top:90px;
    position:relative;
    overflow:hidden;
}

.slider{
    display:flex;
    transition:transform .5s ease;
}

.testimonial{
    min-width:100%;
    padding:40px;
    border-radius:var(--radius);
}

.testimonial-top{
    display:flex;
    align-items:center;
    gap:16px;
    margin-bottom:20px;
}

.avatar{
    width:70px;
    height:70px;
    border-radius:50%;
    object-fit:cover;
    flex:0 0 70px;
}

.avatar-initials{
    display:flex;
    align-items:center;
    justify-content:center;
    color:#fff;
    font-size:28px;
    font-weight:800;
    line-height:1;
    box-shadow:0 12px 35px rgba(0,0,0,.28);
}

.avatar-blue{
    background:linear-gradient(135deg,#16c8ff,#7558ff);
}

.avatar-violet{
    background:linear-gradient(135deg,#7c5cff,#c05cff);
}

.avatar-pink{
    background:linear-gradient(135deg,#ff5aa5,#6ee7ff);
}

.stars{
    color:#ffd74b;
    margin-top:4px;
}

.slider-controls{
    margin-top:24px;
    display:flex;
    gap:14px;
}

.control-btn{
    width:50px;
    height:50px;
    border:none;
    border-radius:50%;
    cursor:pointer;
    color:white;
    background:var(--glass);
    border:1px solid var(--border);
    transition:var(--transition);
}

.control-btn:hover{
    background:rgba(255,255,255,.15);
}

/* =========================================================
   QUIZ
========================================================= */

.measure-video-wrapper{
    margin-top:40px;
    margin-bottom:50px;

    border-radius:32px;
    overflow:hidden;

    position:relative;

    box-shadow:
        0 0 40px rgba(61,139,255,.18),
        0 0 80px rgba(168,85,247,.12);
}

.measure-video{
    width:100%;
    max-height:420px;

    display:block;

    border-radius:32px;

    object-fit:contain;

    background:#000;
}

.quiz-wrapper{
    max-width:860px;
    margin:auto;
}

.form-grid{
    display:grid;
    grid-template-columns:repeat(2,1fr);
    gap:22px;
    margin-top:50px;
}

.form-group{
    display:flex;
    flex-direction:column;
    gap:10px;
}

.form-group label{
    font-size:.95rem;
    color:#dbe3ff;
}

.input{
    width:100%;
    border:none;
    outline:none;
    color:white;
    padding:18px;
    border-radius:18px;
    background:rgba(255,255,255,.06);
    border:1px solid rgba(255,255,255,.08);
    transition:var(--transition);
}

.input:focus{
    border-color:var(--cyan);
    box-shadow:
        0 0 20px rgba(0,229,255,.3);
}

.analysis-box{
    margin-top:40px;
    display:none;
    padding:40px;
    border-radius:var(--radius);
    text-align:center;
}

.progress-shoe{
    width:260px;
    height:120px;
    margin:0 auto 30px;
    position:relative;
}

.progress-bar{
    position:absolute;
    bottom:-18px;
    left:0;
    width:0%;
    height:12px;
    border-radius:999px;
    background:linear-gradient(90deg,var(--cyan),var(--violet));
    animation:load 3s forwards;
}

@keyframes load{
    to{
        width:100%;
    }
}

.loading-lace{
    position:absolute;
    width:100px;
    height:5px;
    background:white;
    border-radius:999px;
    left:80px;
    animation:laceAnim 1s infinite alternate;
}

.loading-lace:nth-child(1){top:35px;}
.loading-lace:nth-child(2){top:60px;}
.loading-lace:nth-child(3){top:85px;}

@keyframes laceAnim{
    from{transform:scaleX(.7);}
    to{transform:scaleX(1.1);}
}

/* =========================================================
   RESULTS
========================================================= */

.results-grid{
    margin-top:70px;
    display:grid;
    grid-template-columns:repeat(3,1fr);
    gap:24px;
}

.sneaker-card{
    position:relative;
    overflow:hidden;
    border-radius:30px;
    cursor:pointer;
    transition:var(--transition);
    padding:24px;
}

.sneaker-card:hover{
    transform:translateY(-10px);
}

.sneaker-image-frame{
    width:100%;
    height:210px;
    padding:8px;
    border-radius:22px;
    overflow:hidden;
    display:flex;
    align-items:center;
    justify-content:center;
    background:
        radial-gradient(circle at 50% 50%, rgba(255,255,255,.14), rgba(255,255,255,.045) 54%, rgba(255,255,255,.025));
}

.sneaker-img{
    display:block;
    width:100%;
    height:100%;
    object-fit:contain;
    object-position:center;
    transform:scale(1.08);
    transition:transform .7s ease;
}

.sneaker-card:hover .sneaker-img{
    transform:translateY(-4px) rotate(-1deg) scale(1.1);
}

.price{
    color:#fff;
    margin-top:10px;
    font-weight:700;
}

.modal-size{
    display:inline-flex;
    margin-top:12px;
    padding:10px 16px;
    border-radius:999px;
    background:rgba(45,255,155,.15);
    color:var(--green);
    border:1px solid rgba(45,255,155,.3);
    font-weight:700;
}

.recommendations-empty{
    grid-column:1/-1;
    padding:30px;
    border-radius:var(--radius);
    color:#dbe3ff;
    line-height:1.7;
}

/* =========================================================
   MODAL
========================================================= */

.modal{
    position:fixed;
    inset:0;
    display:flex;
    align-items:center;
    justify-content:center;
    z-index:9999;
    background:rgba(0,0,0,.55);
    opacity:0;
    pointer-events:none;
    transition:var(--transition);
    padding:20px;
}

.modal.active{
    opacity:1;
    pointer-events:auto;
}

.modal-content{
    position:relative;
    width:min(900px,100%);
    border-radius:30px;
    overflow:hidden;
    max-height:90vh;
    overflow-y:auto;
    touch-action:pan-y;
    transform:translateY(30px) scale(.95);
    transition:var(--transition);
}

.modal.active .modal-content{
    transform:translateY(0) scale(1);
}

.modal-gallery{
    position:relative;
    touch-action:pan-y;
    background:
        radial-gradient(circle at 50% 50%, rgba(255,255,255,.16), rgba(255,255,255,.04) 58%, rgba(0,0,0,.08));
}

.modal-image{
    display:block;
    width:100%;
    height:360px;
    padding:16px;
    object-fit:contain;
    object-position:center;
    background:transparent;
}

.gallery-btn{
    position:absolute;
    top:50%;
    transform:translateY(-50%);
    width:46px;
    height:46px;
    border:none;
    border-radius:50%;
    cursor:pointer;
    color:white;
    background:rgba(7,7,16,.52);
    border:1px solid rgba(255,255,255,.14);
    backdrop-filter:blur(12px);
    -webkit-backdrop-filter:blur(12px);
    font-size:1.8rem;
    line-height:1;
    z-index:2;
    transition:var(--transition);
}

.gallery-btn:hover{
    background:rgba(61,139,255,.34);
}

.gallery-btn:disabled{
    display:none;
}

.gallery-btn--prev{
    left:18px;
}

.gallery-btn--next{
    right:18px;
}

.gallery-counter{
    position:absolute;
    right:20px;
    bottom:18px;
    padding:8px 12px;
    border-radius:999px;
    color:white;
    background:rgba(7,7,16,.58);
    border:1px solid rgba(255,255,255,.12);
    backdrop-filter:blur(12px);
    -webkit-backdrop-filter:blur(12px);
    font-size:.9rem;
    font-weight:700;
}

.gallery-thumbs{
    display:flex;
    gap:10px;
    padding:14px 18px 0;
    overflow-x:auto;
    scrollbar-width:thin;
}

.gallery-thumb{
    flex:0 0 74px;
    height:58px;
    padding:4px;
    border-radius:14px;
    border:1px solid rgba(255,255,255,.1);
    background:rgba(255,255,255,.06);
    cursor:pointer;
    opacity:.68;
    transition:var(--transition);
}

.gallery-thumb.active,
.gallery-thumb:hover{
    opacity:1;
    border-color:rgba(0,229,255,.62);
    box-shadow:0 0 18px rgba(0,229,255,.2);
}

.gallery-thumb img{
    width:100%;
    height:100%;
    object-fit:contain;
    display:block;
}

.modal-body{
    padding:30px;
}

.close-modal{
    position:absolute;
    top:20px;
    right:20px;
    z-index:10;
    width:46px;
    height:46px;
    border:none;
    border-radius:50%;
    cursor:pointer;
    background:rgba(255,255,255,.15);
    color:white;
    font-size:1.2rem;
    pointer-events:auto;
    touch-action:manipulation;
}

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

.reveal{
    opacity:0;
    transform:translateY(60px);
    transition:
        opacity .8s ease,
        transform .8s ease;
}

.reveal.visible{
    opacity:1;
    transform:translateY(0);
}

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

@media(max-width:1024px){

    .hero{
        grid-template-columns:1fr;
        text-align:center;
    }

    .hero p{
        margin-inline:auto;
    }

    .cards-grid{
        grid-template-columns:1fr;
    }

    .bento{
        grid-template-columns:1fr;
    }

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

@media(max-width:768px){

    .nav-links{
        display:none;
    }

    .form-grid{
        grid-template-columns:1fr;
    }

    .results-grid{
        grid-template-columns:1fr;
    }

    .foot-wrapper{
        width:320px;
    }

    .hero{
        min-height:auto;
        padding-top:80px;
    }

    .bento{
        gap:18px;
        margin-top:54px;
    }

    .bento-left{
        min-height:0;
        aspect-ratio:3 / 2;
        border-radius:22px;
    }

    .bento-left img{
        width:100%;
        height:100%;
        object-fit:cover;
        object-position:center center;
    }

    .bento-right{
        gap:18px;
    }

    .bento-box{
        padding:24px;
        border-radius:22px;
    }

    .section{
        padding-top:140px;
    }

    .modal-image{
        height:240px;
        padding:10px;
    }

    .gallery-btn{
        width:40px;
        height:40px;
        font-size:1.5rem;
    }

    .gallery-btn--prev{
        left:10px;
    }

    .gallery-btn--next{
        right:10px;
    }

    .gallery-thumbs{
        padding-inline:14px;
    }

    .gallery-thumb{
        flex-basis:62px;
        height:50px;
    }

    .sneaker-image-frame{
        height:190px;
        padding:6px;
    }
}
@media(max-width:768px){

    .nav{
        top:10px;
        padding:6px 12px;
    }

    .logo{
        font-size:1rem;
    }

    .burger{
        width:42px;
        height:42px;
    }

}