/*==================================================
  PRETRACK - PREMIUM SAAS CSS
  Part 1
  Reset • Variables • Background • Navbar
  Buttons • Hero
==================================================*/

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

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

html{
    scroll-behavior:smooth;
}

body{
    font-family:"Inter",sans-serif;
    background:#050816;
    color:#fff;
    overflow-x:hidden;
    line-height:1.6;
    -webkit-font-smoothing:antialiased;
    text-rendering:optimizeLegibility;
}

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

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

ul{
    list-style:none;
}

button{
    font-family:inherit;
    cursor:pointer;
    border:none;
    outline:none;
}

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

:root{

    --primary:#3B82F6;
    --secondary:#8B5CF6;
    --cyan:#06B6D4;

    --bg:#050816;
    --surface:rgba(255,255,255,.05);

    --glass:rgba(255,255,255,.07);

    --border:rgba(255,255,255,.08);

    --text:#ffffff;

    --muted:#b8c4d8;

    --radius:24px;

    --shadow:
    0 18px 40px rgba(0,0,0,.25);

    --transition:.35s ease;

}

/*==============================
  AURORA BACKGROUND
==============================*/

.background{

    position:fixed;

    inset:0;

    z-index:-5;

    background:

    radial-gradient(circle at 10% 20%,
    rgba(59,130,246,.35),
    transparent 28%),

    radial-gradient(circle at 90% 25%,
    rgba(139,92,246,.30),
    transparent 30%),

    radial-gradient(circle at 50% 90%,
    rgba(6,182,212,.22),
    transparent 35%),

    #050816;

    animation:aurora 16s ease-in-out infinite alternate;

}

@keyframes aurora{

    from{

        filter:hue-rotate(0deg);

    }

    to{

        filter:hue-rotate(40deg);

    }

}

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

header{

    position:fixed;

    top:0;

    left:0;

    width:100%;

    z-index:999;

    background:rgba(5,8,22,.60);

    backdrop-filter:blur(12px);

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

    transition:var(--transition);

}

.navbar{

    width:min(1250px,92%);

    margin:auto;

    height:80px;

    display:flex;

    align-items:center;

    justify-content:space-between;

}

.logo{

    display:flex;

    align-items:center;

    gap:12px;

    font-size:1.6rem;

    font-weight:800;

}

.logo img{

    width:42px;

    height:42px;

}

.navbar ul{

    display:flex;

    align-items:center;

    gap:30px;

}

.navbar a{

    transition:var(--transition);

}

.navbar a:hover{

    color:var(--primary);

}

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

.primary-btn{

    display:inline-flex;

    align-items:center;

    justify-content:center;

    padding:15px 34px;

    border-radius:999px;

    background:

    linear-gradient(135deg,
    var(--primary),
    var(--secondary));

    color:#fff;

    font-weight:700;

    transition:var(--transition);

    box-shadow:

    0 12px 30px rgba(37,99,235,.35);

}

.primary-btn:hover{

    transform:translateY(-4px);

    box-shadow:

    0 20px 45px rgba(37,99,235,.45);

}

.secondary-btn{

    display:inline-flex;

    align-items:center;

    justify-content:center;

    padding:15px 34px;

    margin-left:16px;

    border-radius:999px;

    background:rgba(255,255,255,.05);

    border:1px solid rgba(255,255,255,.12);

    backdrop-filter:blur(12px);

    transition:var(--transition);

}

.secondary-btn:hover{

    background:rgba(255,255,255,.10);

}

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

.hero{

    width:min(1250px,92%);

    margin:auto;

    min-height:calc(100vh - 80px);

    padding-top:110px;

    display:grid;

    grid-template-columns:1fr 1fr;

    align-items:center;

    gap:60px;

}

.hero-left{

    min-width:0;

}

.hero-right{

    display:flex;

    justify-content:center;

    align-items:center;

    min-width:0;

}

.hero-right img{

    width:100%;

    max-width:520px;

    aspect-ratio:1/1;

    object-fit:contain;

    animation:float 5s ease-in-out infinite;

    will-change:transform;

}

.tag{

    display:inline-block;

    padding:10px 20px;

    margin-bottom:25px;

    border-radius:999px;

    background:rgba(59,130,246,.15);

    color:#60a5fa;

    font-weight:600;

}

.hero h1{

    font-size:clamp(3rem,6vw,5.2rem);

    line-height:1.08;

    margin-bottom:25px;

}

.hero p{

    max-width:620px;

    font-size:1.08rem;

    line-height:1.9;

    color:var(--muted);

    margin-bottom:35px;

}

.hero-buttons{

    display:flex;

    align-items:center;

    flex-wrap:wrap;

    gap:18px;

}

@keyframes float{

    0%,100%{

        transform:translateY(0);

    }

    50%{

        transform:translateY(-15px);

    }

}

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

section{

    padding:100px 0;

}

section h2{

    font-size:clamp(2.2rem,4vw,3rem);

    text-align:center;

    margin-bottom:18px;

}

section>p{

    max-width:760px;

    margin:0 auto 60px;

    text-align:center;

    color:var(--muted);

    line-height:1.8;

}
/*==================================================
  PART 2
  Exams • Subjects • Features
  Resources • FAQ
==================================================*/

/*==============================
  EXAM SECTION
==============================*/

.exam-grid{

    width:min(1250px,92%);
    margin:auto;

    display:grid;

    grid-template-columns:repeat(auto-fit,minmax(180px,1fr));

    gap:24px;

}

.exam-card{

    position:relative;

    padding:32px 24px;

    border-radius:var(--radius);

    background:var(--glass);

    backdrop-filter:blur(12px);

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

    text-align:center;

    overflow:hidden;

    transition:var(--transition);

    cursor:pointer;

}

.exam-card::before{

    content:"";

    position:absolute;

    inset:0;

    background:
    linear-gradient(
    135deg,
    rgba(59,130,246,.08),
    rgba(139,92,246,.08));

    opacity:0;

    transition:var(--transition);

}

.exam-card:hover{

    transform:translateY(-10px);

    border-color:var(--primary);

    box-shadow:var(--shadow);

}

.exam-card:hover::before{

    opacity:1;

}

.exam-card h3{

    position:relative;

    font-size:1.2rem;

    font-weight:700;

}

.exam-card p{

    position:relative;

    margin-top:12px;

    color:var(--muted);

    font-size:.95rem;

}

/*==============================
  SUBJECTS
==============================*/

.subject-grid{

    width:min(1250px,92%);
    margin:auto;

    display:grid;

    grid-template-columns:repeat(3,1fr);

    gap:30px;

}

.subject-card{

    background:var(--glass);

    backdrop-filter:blur(12px);

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

    border-radius:28px;

    padding:40px;

    transition:var(--transition);

}

.subject-card:hover{

    transform:translateY(-12px);

    border-color:var(--primary);

    box-shadow:var(--shadow);

}

.subject-icon{

    width:64px;

    height:64px;

    border-radius:18px;

    display:grid;

    place-items:center;

    margin-bottom:25px;

    font-size:1.8rem;

    background:
    linear-gradient(
    135deg,
    rgba(59,130,246,.25),
    rgba(139,92,246,.25));

}

.subject-card h3{

    font-size:1.7rem;

    margin-bottom:16px;

}

.subject-card p{

    color:var(--muted);

    line-height:1.9;

}

/*==============================
  FEATURES
==============================*/

.feature-grid{

    width:min(1250px,92%);
    margin:auto;

    display:grid;

    grid-template-columns:
    repeat(auto-fit,minmax(260px,1fr));

    gap:24px;

}

.feature{

    background:var(--glass);

    backdrop-filter:blur(12px);

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

    border-radius:24px;

    padding:35px;

    transition:var(--transition);

}

.feature:hover{

    transform:translateY(-10px);

    border-color:var(--primary);

    box-shadow:var(--shadow);

}

.feature-icon{

    width:58px;

    height:58px;

    border-radius:16px;

    display:grid;

    place-items:center;

    margin-bottom:22px;

    font-size:1.5rem;

    background:
    linear-gradient(
    135deg,
    var(--primary),
    var(--secondary));

}

.feature h3{

    font-size:1.35rem;

    margin-bottom:15px;

}

.feature p{

    color:var(--muted);

    line-height:1.8;

}

/*==============================
  RESOURCES
==============================*/

.resources{

    width:min(1250px,92%);
    margin:auto;

    display:grid;

    grid-template-columns:
    repeat(auto-fit,minmax(280px,1fr));

    gap:30px;

}

.resource-card{

    padding:35px;

    border-radius:24px;

    background:var(--glass);

    backdrop-filter:blur(12px);

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

    transition:var(--transition);

}

.resource-card:hover{

    transform:translateY(-10px);

    border-color:var(--primary);

    box-shadow:var(--shadow);

}

.resource-card h3{

    margin-bottom:15px;

}

.resource-card p{

    color:var(--muted);

    margin-bottom:22px;

    line-height:1.8;

}

.resource-card a{

    color:#60a5fa;

    font-weight:700;

}

/*==============================
  FAQ
==============================*/

.faq{

    width:min(900px,92%);
    margin:auto;

}

.faq-item{

    margin-bottom:20px;

    padding:28px;

    border-radius:22px;

    background:var(--glass);

    backdrop-filter:blur(12px);

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

    transition:var(--transition);

}

.faq-item:hover{

    border-color:var(--primary);

    box-shadow:var(--shadow);

}

.faq-item h3{

    font-size:1.15rem;

    margin-bottom:12px;

}

.faq-item p{

    color:var(--muted);

    line-height:1.8;

}

/*==================================================
  PART 3
  CTA • Footer • Responsive
  Mobile Navigation • Performance
==================================================*/

/*==============================
  CTA
==============================*/

.cta{

    width:min(1250px,92%);
    margin:auto;

    padding:90px 40px;

    border-radius:32px;

    text-align:center;

    position:relative;

    overflow:hidden;

    background:
    linear-gradient(
    135deg,
    var(--primary),
    var(--secondary));

    box-shadow:
    0 25px 70px rgba(37,99,235,.35);

}

.cta::before{

    content:"";

    position:absolute;

    width:500px;
    height:500px;

    background:
    radial-gradient(circle,
    rgba(255,255,255,.18),
    transparent 70%);

    top:-220px;
    right:-180px;

}

.cta>*{

    position:relative;
    z-index:2;

}

.cta h2{

    font-size:clamp(2.5rem,5vw,4rem);

    margin-bottom:20px;

}

.cta p{

    max-width:700px;

    margin:0 auto 35px;

    line-height:1.8;

    color:rgba(255,255,255,.9);

}

.cta .primary-btn{

    background:#fff;

    color:var(--primary);

    box-shadow:none;

}

.cta .primary-btn:hover{

    transform:translateY(-4px);

}

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

footer{

    margin-top:120px;

    padding:70px 0 30px;

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

    background:rgba(255,255,255,.02);

}

.footer{

    width:min(1250px,92%);

    margin:auto;

    display:grid;

    grid-template-columns:
    repeat(auto-fit,minmax(220px,1fr));

    gap:50px;

}

.footer h3{

    margin-bottom:20px;

    font-size:1.2rem;

}

.footer p{

    color:var(--muted);

    line-height:1.8;

}

.footer ul{

    display:flex;

    flex-direction:column;

    gap:14px;

}

.footer a{

    color:var(--muted);

    transition:var(--transition);

}

.footer a:hover{

    color:var(--primary);

}

.footer-bottom{

    width:min(1250px,92%);

    margin:50px auto 0;

    padding-top:25px;

    border-top:1px solid rgba(255,255,255,.08);

    text-align:center;

    color:var(--muted);

    font-size:.95rem;

}

/*==============================
  MOBILE SIGN IN
==============================*/

.mobile-signin{

    display:none;

}

.desktop-signin{

    display:inline-flex;

}

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

@media (max-width:1100px){

.hero{

    gap:40px;

}

.subject-grid{

    grid-template-columns:repeat(2,1fr);

}

}

@media (max-width:992px){

.navbar{

    height:75px;

}

.navbar ul{

    display:none;

}

.mobile-signin{

    display:inline-flex;

    align-items:center;

    justify-content:center;

    padding:12px 22px;

    border-radius:999px;

    background:
    linear-gradient(
    135deg,
    var(--primary),
    var(--secondary));

    color:#fff;

    font-weight:700;

}

.desktop-signin{

    display:none;

}

.hero{

    grid-template-columns:1fr;

    gap:40px;

    text-align:center;

    padding-top:100px;

    min-height:auto;

}

.hero-left{

    order:2;

}

.hero-right{

    order:1;

}

.hero-right img{

    max-width:400px;

    animation:none;

}

.hero p{

    margin-inline:auto;

}

.hero-buttons{

    justify-content:center;

}

.subject-grid{

    grid-template-columns:1fr;

}

section{

    padding:80px 0;

}

}

@media (max-width:768px){

section h2{

    font-size:2rem;

}

.hero h1{

    font-size:2.7rem;

}

.hero p{

    font-size:1rem;

}

.cta{

    padding:70px 25px;

}

.cta h2{

    font-size:2.2rem;

}

.footer{

    gap:35px;

}

}

@media (max-width:500px){

.hero{

    padding-top:90px;

}

.hero-right img{

    max-width:320px;

}

.primary-btn,
.secondary-btn{

    width:100%;

}

.hero-buttons{

    flex-direction:column;

}

.tag{

    font-size:.9rem;

}

}

/*==============================
  PERFORMANCE
==============================*/

@media (hover:none){

.feature:hover,
.subject-card:hover,
.exam-card:hover,
.resource-card:hover,
.faq-item:hover{

    transform:none;

    box-shadow:none;

}

}

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

*{

    animation:none !important;

    transition:none !important;

    scroll-behavior:auto;

}

}


/*==================================================
  PART 4
  Premium Effects • Accessibility
  Scroll Animations • Final Polish
==================================================*/

/*==============================
  CUSTOM SCROLLBAR
==============================*/

::-webkit-scrollbar{
    width:10px;
}

::-webkit-scrollbar-track{
    background:#050816;
}

::-webkit-scrollbar-thumb{
    background:linear-gradient(
        var(--primary),
        var(--secondary)
    );
    border-radius:999px;
}

::-webkit-scrollbar-thumb:hover{
    background:var(--primary);
}

/*==============================
  TEXT SELECTION
==============================*/

::selection{
    background:var(--primary);
    color:#fff;
}

/*==============================
  GLASS EFFECT
==============================*/

.glass{
    background:var(--glass);
    backdrop-filter:blur(12px);
    -webkit-backdrop-filter:blur(12px);
    border:1px solid var(--border);
    border-radius:var(--radius);
}

/*==============================
  GLOW EFFECT
==============================*/

.glow{
    position:relative;
}

.glow::after{

    content:"";

    position:absolute;

    inset:-2px;

    border-radius:inherit;

    background:
    linear-gradient(
        135deg,
        rgba(59,130,246,.25),
        rgba(139,92,246,.25)
    );

    filter:blur(24px);

    opacity:0;

    transition:var(--transition);

    z-index:-1;

}

.glow:hover::after{
    opacity:1;
}

/*==============================
  HOVER LIFT
==============================*/

.hover-lift{

    transition:var(--transition);

}

.hover-lift:hover{

    transform:translateY(-8px);

}

/*==============================
  IMAGE OPTIMIZATION
==============================*/

img{

    image-rendering:auto;

    user-select:none;

    -webkit-user-drag:none;

}

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

a:focus-visible,
button:focus-visible{

    outline:3px solid var(--primary);

    outline-offset:4px;

    border-radius:8px;

}

/*==============================
  LINKS
==============================*/

a{

    transition:color .3s ease;

}

a:hover{

    color:var(--primary);

}

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

.reveal{

    opacity:0;

    transform:translateY(40px);

    transition:
    opacity .8s ease,
    transform .8s ease;

}

.reveal.active{

    opacity:1;

    transform:none;

}

/*==============================
  FADE IN
==============================*/

.fade-in{

    animation:fadeIn .8s ease forwards;

}

@keyframes fadeIn{

    from{

        opacity:0;

    }

    to{

        opacity:1;

    }

}

/*==============================
  FLOAT SMALL
==============================*/

.float-small{

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

}

@keyframes floatSmall{

    0%,100%{

        transform:translateY(0);

    }

    50%{

        transform:translateY(-8px);

    }

}

/*==============================
  PULSE
==============================*/

.pulse{

    animation:pulse 2.5s infinite;

}

@keyframes pulse{

    0%{

        box-shadow:
        0 0 0 0 rgba(59,130,246,.5);

    }

    70%{

        box-shadow:
        0 0 0 18px rgba(59,130,246,0);

    }

    100%{

        box-shadow:
        0 0 0 0 rgba(59,130,246,0);

    }

}

/*==============================
  DIVIDER
==============================*/

.divider{

    width:80px;

    height:4px;

    border-radius:999px;

    margin:18px auto 40px;

    background:
    linear-gradient(
        var(--primary),
        var(--secondary)
    );

}

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

.container{

    width:min(1250px,92%);

    margin:auto;

}

/*==============================
  CLS OPTIMIZATION
==============================*/

.hero-right img{

    width:100%;

    height:auto;

    aspect-ratio:1/1;

}

.logo img{

    width:42px;

    height:42px;

}

iframe{

    max-width:100%;

}

/*==============================
  PRINT
==============================*/

@media print{

    header,
    footer,
    .cta{

        display:none;

    }

    body{

        background:#fff;

        color:#000;

    }

}

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

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

    *{

        animation:none !important;

        transition:none !important;

        scroll-behavior:auto;

    }

}

/*==============================
  END
==============================*/