:root{
    --blue:#0A66FF;
    --blueDark:#0057D9;
    --black:#111111;
    --white:#ffffff;
    --gray:#f5f7fb;
    --border:#e6ebf2;
}

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

html{
    scroll-behavior:smooth;
}

body{
    font-family:'Inter',sans-serif;
    background:var(--white);
    color:var(--black);
    overflow-x:hidden;
    line-height:1.6;
}

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

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

header{
    position:fixed;
    top:0;
    left:0;
    width:100%;
    z-index:999;
    background:rgba(255,255,255,.92);
    backdrop-filter:blur(12px);
    border-bottom:1px solid rgba(0,0,0,.05);
}

.navbar{
    min-height:68px;
    display:flex;
    align-items:center;
    justify-content:center;
    gap:32px;
}

.nav-logo{
    display:flex;
    align-items:center;
    justify-content:center;
    text-decoration:none;
}

.nav-logo img{
    height:34px;
    width:auto;
    object-fit:contain;
    display:block;
}

.nav-center{
    display:flex;
    align-items:center;
    gap:28px;
}

.nav-center a{
    text-decoration:none;
    color:var(--black);
    font-weight:600;
    font-size:.95rem;
    transition:.25s;
}

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

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

.hero{
    min-height:100vh;
    display:flex;
    align-items:center;
    justify-content:center;
    position:relative;
    overflow:hidden;
    background:
    radial-gradient(circle at top left, rgba(10,102,255,.16), transparent 40%),
    radial-gradient(circle at bottom right, rgba(10,102,255,.1), transparent 35%),
    linear-gradient(to bottom, #ffffff, #f7faff);
}

.hero::before{
    content:"";
    position:absolute;
    width:600px;
    height:600px;
    background:rgba(10,102,255,.08);
    border-radius:50%;
    filter:blur(80px);
    animation:float 10s ease-in-out infinite;
}

@keyframes float{

    0%{
        transform:translateY(0px);
    }

    50%{
        transform:translateY(-30px);
    }

    100%{
        transform:translateY(0px);
    }

}

.hero-content{
    text-align:center;
    position:relative;
    z-index:2;
    padding-top:60px;
}

.hero h1{
    font-size:4.5rem;
    font-weight:800;
    margin-bottom:12px;
    color:var(--black);
    letter-spacing:-2px;
}

.blue-domain{
    color:var(--blue);
}

.hero-slogan{
    font-size:1.35rem;
    font-weight:600;
    color:var(--blue);
    margin-bottom:26px;
}

.hero-description{
    font-size:1.2rem;
    max-width:760px;
    margin:auto;
    color:#4b5563;
}

.hero-buttons{
    margin-top:42px;
    display:flex;
    justify-content:center;
    gap:18px;
    flex-wrap:wrap;
}

/* =========================
BUTTONS
========================= */

.btn{
    display:inline-flex;
    align-items:center;
    justify-content:center;
    padding:16px 34px;
    border-radius:16px;
    text-decoration:none;
    font-weight:700;
    transition:.3s;
}

.btn-primary{
    background:var(--blue);
    color:#fff;
    box-shadow:0 12px 28px rgba(10,102,255,.22);
}

.btn-primary:hover{
    background:var(--blueDark);
    transform:translateY(-3px);
}

.btn-secondary{
    border:2px solid var(--blue);
    color:var(--blue);
}

.btn-secondary:hover{
    background:var(--blue);
    color:#fff;
}

/* =========================
SECTIONS
========================= */

section{
    padding:110px 0;
}

.section-title{
    text-align:center;
    margin-bottom:70px;
}

.section-title span{
    color:var(--blue);
    font-weight:700;
    text-transform:uppercase;
    letter-spacing:1px;
    font-size:.9rem;
}

.section-title h2{
    font-size:2.8rem;
    margin-top:14px;
    font-weight:800;
}

.section-title p{
    max-width:760px;
    margin:18px auto 0;
    color:#5f6775;
}

/* =========================
CARDS
========================= */

.grid-4{
    display:grid;
    grid-template-columns:repeat(4,1fr);
    gap:28px;
}

.card{
    background:#fff;
    border-radius:28px;
    padding:36px;
    box-shadow:0 14px 40px rgba(0,0,0,.06);
    border:1px solid var(--border);
    transition:.35s;
}

.card:hover{
    transform:translateY(-8px);
}

.card-icon{
    width:68px;
    height:68px;
    border-radius:20px;
    background:rgba(10,102,255,.12);
    display:flex;
    align-items:center;
    justify-content:center;
    font-size:1.6rem;
    margin-bottom:24px;
}

.card h3{
    margin-bottom:14px;
    font-size:1.3rem;
}

/* =========================
PROMO
========================= */

.promo{
    background:linear-gradient(135deg,#0A66FF,#0057D9);
    color:#fff;
    border-radius:42px;
    padding:70px;
    position:relative;
    overflow:hidden;
}

.promo h2{
    font-size:3rem;
    line-height:1.1;
    margin-bottom:24px;
}

.promo-btn{
    background:#fff;
    color:var(--blue);
    margin-top:30px;
}

/* =========================
HOMEPAGE EVENTS
========================= */

.event-grid{
    display:grid;
    grid-template-columns:repeat(3,1fr);
    gap:30px;
}

.event-card{
    background:#fff;
    border-radius:26px;
    overflow:hidden;
    border:1px solid var(--border);
    box-shadow:0 14px 36px rgba(0,0,0,.05);
    transition:.35s;
}

.event-card:hover{
    transform:translateY(-8px);
}

.event-image{
    height:240px;
    overflow:hidden;
    position:relative;
}

.event-image img{
    width:100%;
    height:100%;
    object-fit:cover;
    display:block;
    transition:.4s;
}

.event-card:hover .event-image img{
    transform:scale(1.06);
}

.event-content{
    padding:28px;
}

.event-date{
    display:inline-block;
    margin-bottom:14px;
    color:var(--blue);
    font-weight:700;
}

.event-content h3{
    font-size:1.7rem;
    margin-bottom:16px;
}

.event-content p{
    color:#5f6775;
    margin-bottom:26px;
}

/* =========================
EVENT STATUS
========================= */

.event-status{
    position:absolute;
    top:16px;
    left:16px;
    z-index:5;
    padding:10px 16px;
    border-radius:999px;
    font-size:.78rem;
    font-weight:700;
    letter-spacing:.5px;
    backdrop-filter:blur(10px);
}

.event-status.upcoming{
    background:rgba(10,102,255,.92);
    color:#fff;
}

.event-status.finished{
    background:rgba(15,23,36,.92);
    color:#fff;
}

/* =========================
EVENTS PAGE
========================= */

.events-hero{
    padding-top:180px;
    padding-bottom:120px;
    background:
    radial-gradient(circle at top left, rgba(10,102,255,.14), transparent 35%),
    linear-gradient(to bottom, #ffffff, #f7faff);
}

.events-hero-content{
    text-align:center;
    max-width:1000px;
}

.events-label{
    display:inline-block;
    padding:10px 18px;
    border-radius:999px;
    background:rgba(10,102,255,.1);
    color:var(--blue);
    font-size:.8rem;
    font-weight:700;
    letter-spacing:1px;
    margin-bottom:28px;
}

.events-hero h1{
    font-size:4.5rem;
    line-height:1.05;
    letter-spacing:-2px;
    margin-bottom:24px;
}

.events-hero p{
    font-size:1.2rem;
    color:#5f6775;
    max-width:760px;
    margin:auto;
}

.events-page-section{
    padding:0 0 120px;
}

.event-grid-modern{
    display:grid;
    grid-template-columns:repeat(3,1fr);
    gap:32px;
}

.event-modern-card{
    background:#fff;
    border-radius:30px;
    overflow:hidden;
    border:1px solid var(--border);
    box-shadow:0 16px 40px rgba(0,0,0,.05);
    transition:.35s;
}

.event-modern-card:hover{
    transform:translateY(-8px);
}

.event-modern-image{
    height:260px;
    overflow:hidden;
    position:relative;
}

.event-modern-image img{
    width:100%;
    height:100%;
    object-fit:cover;
    display:block;
    transition:.4s;
}

.event-modern-card:hover .event-modern-image img{
    transform:scale(1.06);
}

.event-modern-content{
    padding:32px;
}

.event-modern-category{
    display:inline-flex;
    padding:10px 14px;
    border-radius:999px;
    background:rgba(10,102,255,.1);
    color:var(--blue);
    font-size:.75rem;
    font-weight:700;
    margin-bottom:20px;
}

.event-modern-content h3{
    font-size:1.7rem;
    line-height:1.1;
    margin-bottom:16px;
}

.event-modern-content p{
    color:#5f6775;
    margin-bottom:24px;
}

.event-modern-meta{
    display:flex;
    flex-direction:column;
    gap:10px;
    margin-bottom:28px;
    color:#5f6775;
    font-weight:600;
}

/* =========================
NO EVENTS
========================= */

.no-events{
    grid-column:1/-1;
    text-align:center;
    padding:80px 30px;
    background:#fff;
    border-radius:32px;
    border:1px solid var(--border);
}

.no-events h2{
    font-size:2rem;
    margin-bottom:14px;
}

.no-events p{
    color:#5f6775;
}

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

footer{
    background:#0f1724;
    color:#fff;
    padding:90px 0 40px;
}

.footer-grid{
    display:grid;
    grid-template-columns:repeat(4,1fr);
    gap:40px;
}

.footer-col h4{
    margin-bottom:22px;
}

.footer-col a{
    display:block;
    color:#d3d9e3;
    text-decoration:none;
    margin-bottom:12px;
}

.footer-bottom{
    margin-top:60px;
    padding-top:24px;
    border-top:1px solid rgba(255,255,255,.08);
    text-align:center;
    color:#a8b0be;
}

/* =========================
COOKIES
========================= */

.cookie-banner{
    position:fixed;
    left:50%;
    bottom:30px;
    transform:translateX(-50%);
    width:min(940px,92%);
    background:rgba(15,23,36,.96);
    backdrop-filter:blur(12px);
    border:1px solid rgba(255,255,255,.08);
    border-radius:24px;
    padding:22px 26px;
    z-index:9999;
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:24px;
    transition:.3s;
}

.cookie-content{
    display:flex;
    align-items:center;
    gap:22px;
}

.cookie-content img{
    width:52px;
}

.cookie-text h4{
    color:#fff;
    margin-bottom:6px;
}

.cookie-text p{
    color:#c8d0db;
    font-size:.95rem;
}

.cookie-btn{
    border:none;
    background:var(--blue);
    color:#fff;
    padding:14px 24px;
    border-radius:14px;
    cursor:pointer;
    font-weight:700;
    transition:.3s;
}

.cookie-btn:hover{
    background:var(--blueDark);
}

/* =========================
KOREPETYCJE
========================= */

.kore-info{
    padding:40px 0 80px;
}

.kore-info-box{
    background:linear-gradient(135deg,#0A66FF,#0057D9);
    border-radius:36px;
    padding:60px;
    color:#fff;
    display:grid;
    grid-template-columns:2fr 1fr;
    gap:50px;
    box-shadow:0 20px 50px rgba(10,102,255,.18);
}

.kore-info-content span{
    display:inline-block;
    margin-bottom:18px;
    font-size:.82rem;
    font-weight:700;
    letter-spacing:1px;
    opacity:.8;
}

.kore-info-content h2{
    font-size:3rem;
    line-height:1.05;
    margin-bottom:24px;
}

.kore-info-content p{
    font-size:1.08rem;
    line-height:1.9;
    opacity:.92;
}

.kore-info-side{
    background:rgba(255,255,255,.12);
    border:1px solid rgba(255,255,255,.14);
    border-radius:28px;
    padding:34px;
    backdrop-filter:blur(14px);
}

.kore-info-side h3{
    font-size:1.5rem;
    margin-bottom:18px;
}

.kore-info-side p{
    margin-bottom:28px;
    line-height:1.8;
}

.korepetycje-section{
    padding:0 0 120px;
}

#subjects-container{
    display:grid;
    grid-template-columns:repeat(2,minmax(0,1fr));
    gap:34px;
}

.kore-subject-section{
    width:100%;
}

.kore-subject-wrapper{
    background:#fff;
    border-radius:34px;
    padding:38px;
    border:1px solid var(--border);
    box-shadow:0 14px 36px rgba(0,0,0,.05);
    height:100%;
    transition:.3s;
}

.kore-subject-wrapper:hover{
    transform:translateY(-6px);
}

.kore-subject-header{
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:20px;
    margin-bottom:30px;
    padding-bottom:20px;
    border-bottom:1px solid #eef3f8;
}

.kore-subject-header h2{
    font-size:2rem;
    font-weight:800;
}

.kore-subject-header span{
    background:rgba(10,102,255,.1);
    color:var(--blue);
    padding:10px 16px;
    border-radius:999px;
    font-size:.85rem;
    font-weight:700;
}

.korepetycje-grid{
    display:flex;
    flex-direction:column;
    gap:22px;
}

.korepetycje-card{
    background:#f8fbff;
    border:1px solid #e6eef9;
    border-radius:24px;
    padding:28px;
    transition:.25s;
}

.korepetycje-card:hover{
    background:#fff;
    transform:translateY(-3px);
}

.korepetycje-card h3{
    font-size:1.2rem;
    margin-bottom:14px;
    line-height:1.45;
}

.korepetycje-card p{
    margin-bottom:20px;
    line-height:1.7;
    color:#5f6775;
}

.korepetycje-card span{
    display:inline-block;
    background:rgba(10,102,255,.1);
    color:var(--blue);
    padding:12px 18px;
    border-radius:14px;
    font-weight:700;
}

.empty-subject{
    background:#f8fbff;
    border:2px dashed #dce6f5;
    border-radius:24px;
    padding:60px 24px;
    text-align:center;
    font-weight:700;
    color:#64748b;
}

.empty-subject::before{
    content:"📚";
    display:block;
    font-size:2.8rem;
    margin-bottom:18px;
}

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

@media(max-width:1100px){

    .grid-4{
        grid-template-columns:repeat(2,1fr);
    }

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

    .event-grid-modern{
        grid-template-columns:1fr;
    }

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

    #subjects-container{
        grid-template-columns:1fr;
    }

}

@media(max-width:768px){

    .navbar{
        flex-direction:column;
        gap:16px;
        padding:18px 0;
    }

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

    .hero h1{
        font-size:3rem;
    }

    .events-hero{
        padding-top:160px;
        padding-bottom:90px;
    }

    .events-hero h1{
        font-size:2.8rem;
    }

    .grid-4{
        grid-template-columns:1fr;
    }

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

    .cookie-banner{
        flex-direction:column;
        align-items:flex-start;
    }

    .cookie-content{
        flex-direction:column;
        align-items:flex-start;
    }

    .section-title h2{
        font-size:2rem;
    }

    .promo{
        padding:40px;
    }

    .promo h2{
        font-size:2rem;
    }

    .kore-info{
        padding:30px 0 60px;
    }

    .kore-info-box{
        padding:34px;
        border-radius:28px;
        grid-template-columns:1fr;
    }

    .kore-info-content h2{
        font-size:2.2rem;
    }

    .kore-subject-wrapper{
        padding:26px;
        border-radius:26px;
    }

    .kore-subject-header{
        flex-direction:column;
        align-items:flex-start;
    }

    .kore-subject-header h2{
        font-size:1.7rem;
    }

    .korepetycje-card{
        padding:22px;
    }

}