@import url('https://fonts.googleapis.com/css2?family=Manrope:wght@400;500;600;700;800;900&display=swap');

:root{
    --bg:#0b1017;
    --bg-2:#101722;
    --card:#151d28;
    --card-2:#1a2432;
    --text:#f8fafc;
    --muted:#9aa7b8;
    --line:rgba(255,255,255,.09);
    --blue:#3b82f6;
    --blue-2:#60a5fa;
    --danger:#ef4444;
    --radius:26px;
    --shadow:0 30px 90px rgba(0,0,0,.35);
}

*{
    box-sizing:border-box;
}

html{
    scroll-behavior:smooth;
}

body{
    margin:0;
    font-family:"Manrope", Arial, sans-serif;
    background:
        radial-gradient(circle at 15% 10%, rgba(59,130,246,.22), transparent 28%),
        radial-gradient(circle at 85% 5%, rgba(96,165,250,.13), transparent 25%),
        linear-gradient(180deg, #0b1017, #070b10);
    color:var(--text);
}

body::before{
    content:"";
    position:fixed;
    inset:0;
    pointer-events:none;
    background-image:
        linear-gradient(rgba(255,255,255,.035) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255,255,255,.035) 1px, transparent 1px);
    background-size:48px 48px;
    mask-image:linear-gradient(to bottom, rgba(0,0,0,.75), transparent 85%);
    z-index:-1;
}

a{
    color:inherit;
    text-decoration:none;
}

img{
    max-width:100%;
    display:block;
}

.container{
    width:min(1180px, 92%);
    margin:0 auto;
}

/* HEADER */

.header{
    position:sticky;
    top:0;
    z-index:100;
    background:rgba(11,16,23,.78);
    backdrop-filter:blur(20px);
    border-bottom:1px solid var(--line);
}

.header-inner{
    height:84px;
    display:flex;
    align-items:center;
    justify-content:space-between;
}

.logo{
    display:flex;
    align-items:center;
}

.logo img{
    height:58px;
    width:auto;
    transition:.25s ease;
}

.logo img:hover{
    transform:scale(1.04);
}

.nav{
    display:flex;
    gap:26px;
    align-items:center;
}

.nav a{
    color:rgba(255,255,255,.82);
    font-weight:800;
    font-size:15px;
    transition:.2s;
}

.nav a:hover{
    color:var(--blue-2);
}

/* BUTTONS */

.btn{
    display:inline-flex;
    align-items:center;
    justify-content:center;
    min-height:52px;
    padding:0 24px;
    border-radius:999px;
    border:1px solid rgba(255,255,255,.14);
    background:linear-gradient(180deg, #1e293b, #111827);
    color:white;
    font-weight:900;
    cursor:pointer;
    transition:.25s ease;
    box-shadow:0 18px 45px rgba(0,0,0,.25);
}

.btn:hover{
    transform:translateY(-2px);
    border-color:rgba(96,165,250,.6);
    box-shadow:0 20px 70px rgba(59,130,246,.24);
}

.white-btn{
    background:#ffffff;
    color:#080b10;
}

.dark-btn{
    background:rgba(255,255,255,.06);
    backdrop-filter:blur(14px);
}

.small-btn{
    display:inline-flex;
    align-items:center;
    justify-content:center;
    padding:11px 16px;
    border-radius:999px;
    background:rgba(59,130,246,.14);
    border:1px solid rgba(59,130,246,.28);
    color:#dbeafe;
    font-weight:900;
    transition:.2s;
}

.small-btn:hover{
    background:rgba(59,130,246,.25);
}

/* HERO */

.hero-premium{
    min-height:720px;
    padding:0;
    display:flex;
    align-items:center;
    position:relative;
    overflow:hidden;
    background:
        linear-gradient(90deg, rgba(0,0,0,.88), rgba(0,0,0,.46), rgba(0,0,0,.12)),
        url("../images/hero-sport.jpg");
    background-size:cover;
    background-position:center;
}

.hero-premium::after{
    content:"";
    position:absolute;
    inset:auto 0 0;
    height:180px;
    background:linear-gradient(to bottom, transparent, var(--bg));
}

.hero-premium-content{
    position:relative;
    z-index:2;
}

.hero-text{
    max-width:760px;
}

.label{
    display:inline-flex;
    align-items:center;
    gap:8px;
    margin:0 0 18px;
    color:var(--blue-2);
    font-size:13px;
    font-weight:900;
    letter-spacing:2px;
    text-transform:uppercase;
}

.hero-text h1{
    margin:0 0 26px;
    font-size:clamp(54px, 8vw, 116px);
    line-height:.9;
    letter-spacing:-5px;
    text-transform:uppercase;
    font-weight:900;
}

.hero-text p{
    max-width:620px;
    margin:0;
    color:rgba(255,255,255,.78);
    font-size:21px;
    line-height:1.55;
}

.hero-buttons{
    display:flex;
    gap:16px;
    flex-wrap:wrap;
    margin-top:36px;
}

/* SECTIONS */

.catalog,
.features,
.product-page,
.cart-page,
.checkout-page,
.success-page,
.admin-page,
.admin-login{
    padding:86px 0;
}

.section-title{
    margin-bottom:38px;
}

.section-title.center{
    max-width:760px;
    margin:0 auto 46px;
    text-align:center;
}

.section-title h1,
.section-title h2{
    margin:0 0 12px;
    font-size:clamp(34px, 5vw, 58px);
    letter-spacing:-2px;
    line-height:1;
    font-weight:900;
}

.section-title p{
    margin:0;
    color:var(--muted);
    font-size:17px;
    line-height:1.6;
}

.dark-label{
    background:transparent;
    padding:0;
}

/* FEATURES */

.features{
    background:transparent;
}

.features-grid{
    display:grid;
    grid-template-columns:repeat(4, 1fr);
    gap:22px;
}

.feature-card{
    min-height:260px;
    padding:30px;
    border-radius:var(--radius);
    background:linear-gradient(180deg, rgba(255,255,255,.06), rgba(255,255,255,.03));
    border:1px solid var(--line);
    box-shadow:var(--shadow);
    transition:.25s ease;
}

.feature-card:hover{
    transform:translateY(-8px);
    border-color:rgba(59,130,246,.45);
    box-shadow:0 35px 90px rgba(59,130,246,.12);
}

.feature-icon{
    width:52px;
    height:52px;
    margin-bottom:22px;
    color:var(--blue-2);
}

.feature-icon svg{
    width:100%;
    height:100%;
    stroke:currentColor;
    fill:none;
    stroke-width:1.7;
    stroke-linecap:round;
    stroke-linejoin:round;
}

.feature-card h3{
    margin:0 0 12px;
    font-size:21px;
    font-weight:900;
}

.feature-card p{
    margin:0;
    color:var(--muted);
    line-height:1.6;
}

/* PRODUCTS */

.products-grid{
    display:grid;
    grid-template-columns:repeat(3, 1fr);
    gap:26px;
}

.product-card{
    overflow:hidden;
    border-radius:var(--radius);
    background:linear-gradient(180deg, var(--card), var(--card-2));
    border:1px solid var(--line);
    box-shadow:var(--shadow);
    transition:.25s ease;
}

.product-card:hover{
    transform:translateY(-8px);
    border-color:rgba(59,130,246,.35);
}

.product-card img{
    width:100%;
    height:310px;
    object-fit:cover;
    background:#111827;
}

.product-info{
    padding:24px;
}

.category{
    margin:0 0 9px;
    color:var(--blue-2);
    font-size:13px;
    font-weight:900;
    letter-spacing:1px;
    text-transform:uppercase;
}

.product-info h3{
    margin:0 0 10px;
    font-size:22px;
    line-height:1.2;
}

.desc{
    min-height:48px;
    margin:0;
    color:var(--muted);
    line-height:1.55;
}

.price-row{
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:16px;
    margin-top:24px;
}

.price-row strong{
    font-size:25px;
}

/* PRODUCT PAGE */

.product-layout{
    display:grid;
    grid-template-columns:1fr 1fr;
    gap:42px;
    align-items:start;
}

.product-image-box,
.product-details,
.checkout-info,
.login-box,
.success-box,
.narrow{
    border-radius:var(--radius);
    background:linear-gradient(180deg, var(--card), var(--card-2));
    border:1px solid var(--line);
    box-shadow:var(--shadow);
}

.product-image-box{
    padding:18px;
}

.product-image-box img{
    width:100%;
    height:560px;
    object-fit:cover;
    border-radius:20px;
}

.product-details{
    padding:36px;
}

.product-details h1{
    margin:0 0 16px;
    font-size:44px;
    letter-spacing:-2px;
    line-height:1;
}

.product-description{
    color:var(--muted);
    font-size:18px;
    line-height:1.6;
}

.product-price{
    margin:26px 0;
    font-size:38px;
    font-weight:900;
}

.product-details label,
.form label{
    display:block;
    margin:16px 0 8px;
    color:#e5e7eb;
    font-weight:900;
}

.product-details select,
.product-details input,
.form input,
.form textarea{
    width:100%;
    padding:15px 16px;
    border-radius:16px;
    border:1px solid var(--line);
    background:rgba(255,255,255,.05);
    color:white;
    font-size:16px;
    outline:none;
}

.product-details select:focus,
.product-details input:focus,
.form input:focus,
.form textarea:focus{
    border-color:rgba(96,165,250,.7);
    box-shadow:0 0 0 4px rgba(59,130,246,.14);
}

.form textarea{
    min-height:118px;
    resize:vertical;
}

.form .btn,
.product-details .btn{
    width:100%;
    margin-top:24px;
}

/* CART */

.cart-list{
    display:grid;
    gap:16px;
}

.cart-item{
    display:grid;
    grid-template-columns:92px 1fr auto;
    gap:20px;
    align-items:center;
    padding:18px;
    border-radius:22px;
    background:linear-gradient(180deg, var(--card), var(--card-2));
    border:1px solid var(--line);
}

.cart-item img{
    width:92px;
    height:92px;
    object-fit:cover;
    border-radius:16px;
}

.cart-item h3{
    margin:0 0 6px;
}

.cart-item p{
    margin:0;
    color:var(--muted);
}

.remove-btn,
.danger-btn{
    border:none;
    border-radius:999px;
    padding:11px 16px;
    background:rgba(239,68,68,.12);
    color:#fecaca;
    font-weight:900;
    cursor:pointer;
}

.cart-total{
    display:flex;
    justify-content:space-between;
    margin-top:26px;
    padding:24px;
    border-radius:22px;
    background:linear-gradient(180deg, var(--card), var(--card-2));
    border:1px solid var(--line);
    font-size:26px;
}

.cart-actions{
    display:flex;
    align-items:center;
    justify-content:space-between;
    margin-top:24px;
}

/* CHECKOUT */

.checkout-layout{
    display:grid;
    grid-template-columns:1fr 380px;
    gap:34px;
}

.checkout-info,
.login-box,
.success-box,
.narrow{
    padding:34px;
}

.checkout-item{
    padding:14px 0;
    border-bottom:1px solid var(--line);
}

.checkout-item span{
    display:block;
    font-weight:900;
}

.checkout-item small{
    color:var(--muted);
}

.login-box{
    width:min(460px, 92%);
    margin:0 auto;
}

.success-box{
    text-align:center;
}

/* ADMIN */

.admin-head{
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:20px;
    margin-bottom:30px;
}

.admin-cards{
    display:grid;
    grid-template-columns:repeat(2, 1fr);
    gap:24px;
}

.admin-card{
    padding:30px;
    border-radius:var(--radius);
    background:linear-gradient(180deg, var(--card), var(--card-2));
    border:1px solid var(--line);
}

.admin-card span{
    display:block;
    color:var(--muted);
}

.admin-card strong{
    font-size:48px;
}

.admin-menu{
    display:flex;
    flex-wrap:wrap;
    gap:16px;
    margin-top:28px;
}

.admin-table-wrap{
    overflow-x:auto;
    padding:18px;
    border-radius:var(--radius);
    background:linear-gradient(180deg, var(--card), var(--card-2));
    border:1px solid var(--line);
}

.admin-table{
    width:100%;
    border-collapse:collapse;
}

.admin-table th,
.admin-table td{
    padding:15px;
    border-bottom:1px solid var(--line);
    text-align:left;
}

.table-img{
    width:64px;
    height:64px;
    object-fit:cover;
    border-radius:14px;
}

.alert{
    margin-top:20px;
    padding:14px 18px;
    border-radius:16px;
    background:rgba(245,158,11,.14);
    border:1px solid rgba(245,158,11,.25);
    color:#fde68a;
    font-weight:800;
}

/* AI CHAT */

.ai-widget{
    position:fixed;
    right:24px;
    bottom:24px;
    z-index:200;
}

.ai-open{
    padding:16px 22px;
    border:none;
    border-radius:999px;
    background:linear-gradient(180deg, #2563eb, #1d4ed8);
    color:white;
    font-weight:900;
    cursor:pointer;
    box-shadow:0 20px 60px rgba(59,130,246,.38);
}

.ai-chat{
    display:none;
    width:380px;
    height:520px;
    overflow:hidden;
    border-radius:28px;
    background:rgba(15,23,42,.94);
    backdrop-filter:blur(20px);
    border:1px solid var(--line);
    box-shadow:0 30px 100px rgba(0,0,0,.55);
}

.ai-chat.active{
    display:flex;
    flex-direction:column;
}

.ai-head{
    display:flex;
    align-items:center;
    justify-content:space-between;
    padding:18px;
    border-bottom:1px solid var(--line);
}

.ai-head button{
    border:none;
    background:transparent;
    color:white;
    font-size:26px;
    cursor:pointer;
}

.ai-messages{
    flex:1;
    padding:16px;
    overflow-y:auto;
}

.ai-message{
    max-width:86%;
    margin-bottom:10px;
    padding:12px 14px;
    border-radius:16px;
    line-height:1.45;
}

.ai-message.bot{
    background:rgba(255,255,255,.07);
    border:1px solid var(--line);
}

.ai-message.user{
    margin-left:auto;
    background:var(--blue);
    color:white;
}

.ai-form{
    display:flex;
    gap:8px;
    padding:12px;
    border-top:1px solid var(--line);
}

.ai-form input{
    flex:1;
    padding:13px 14px;
    border-radius:16px;
    border:1px solid var(--line);
    background:rgba(255,255,255,.06);
    color:white;
    outline:none;
}

.ai-form button{
    width:48px;
    border:none;
    border-radius:16px;
    background:var(--blue);
    color:white;
    cursor:pointer;
}

/* RESPONSIVE */

@media (max-width: 980px){
    .features-grid,
    .products-grid{
        grid-template-columns:repeat(2, 1fr);
    }

    .product-layout,
    .checkout-layout{
        grid-template-columns:1fr;
    }

    .hero-text h1{
        letter-spacing:-3px;
    }
}

@media (max-width: 680px){
    .header-inner{
        height:auto;
        padding:18px 0;
        flex-direction:column;
        gap:14px;
    }

    .nav{
        gap:16px;
        flex-wrap:wrap;
        justify-content:center;
    }

    .hero-premium{
        min-height:620px;
        background-position:center right;
    }

    .hero-text h1{
        font-size:58px;
        letter-spacing:-2px;
    }

    .hero-text p{
        font-size:17px;
    }

    .features-grid,
    .products-grid,
    .admin-cards{
        grid-template-columns:1fr;
    }

    .cart-item{
        grid-template-columns:78px 1fr;
    }

    .cart-item button{
        grid-column:1 / -1;
    }

    .cart-actions{
        flex-direction:column;
        align-items:stretch;
        gap:14px;
    }

    .ai-widget{
        right:16px;
        bottom:16px;
    }

    .ai-chat{
        width:calc(100vw - 32px);
        height:520px;
    }
}

/* ---------- HEADER ---------- */

.header-actions{
    display:flex;
    align-items:center;
    gap:14px;
}

.header-btn{
    display:flex;
    align-items:center;
    justify-content:center;
    width:44px;
    height:44px;
    border-radius:50%;
    background:rgba(255,255,255,.06);
    border:1px solid rgba(255,255,255,.08);
    transition:.25s;
}

.header-btn:hover{
    background:#3B82F6;
    transform:translateY(-2px);
}

.header-btn svg{
    width:22px;
    height:22px;
    stroke:white;
    fill:none;
    stroke-width:2;
}

.header-btn span{
    display:none;
}