/* ========================================
   PROJECT NOVA LANDING PAGE
======================================== */

* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    font-family: Arial, sans-serif;
    background: #0b1020;
    color: #f8fafc;
    line-height: 1.6;
}

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

button,
a {
    transition: 0.2s ease;
}


/* ========================================
   NAVBAR
======================================== */

.landing-nav {
    position: sticky;
    top: 0;
    z-index: 50;

    display: flex;
    align-items: center;
    justify-content: space-between;

    padding: 18px 6%;

    background: rgba(11, 16, 32, 0.92);
    backdrop-filter: blur(14px);

    border-bottom:
        1px solid rgba(255,255,255,0.08);
}

.landing-logo {
    font-size: 22px;
    font-weight: 800;
    letter-spacing: 2px;
}

.nav-links {
    display: flex;
    gap: 28px;
}

.nav-links a {
    color: #cbd5e1;
    font-size: 14px;
}

.nav-links a:hover {
    color: #ffffff;
}

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

.login-link {
    color: #cbd5e1;
    font-size: 14px;
}

.nav-cta,
.primary-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;

    padding: 12px 20px;

    border-radius: 10px;

    background: #2563eb;
    color: white;

    font-weight: 700;
    border: none;
}

.nav-cta:hover,
.primary-button:hover {
    transform: translateY(-1px);
    background: #1d4ed8;
}

.secondary-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;

    padding: 12px 20px;

    border-radius: 10px;

    border:
        1px solid rgba(255,255,255,0.15);

    color: #e2e8f0;
    background:
        rgba(255,255,255,0.03);
}

.secondary-button:hover {
    background:
        rgba(255,255,255,0.08);
}


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

.hero {
    min-height: 78vh;

    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;

    text-align: center;

    padding:
        110px 24px 90px;

    background:
        radial-gradient(
            circle at top,
            rgba(37, 99, 235, 0.22),
            transparent 42%
        );
}

.hero-badge {
    padding: 8px 14px;
    margin-bottom: 22px;

    border-radius: 999px;

    background:
        rgba(37, 99, 235, 0.12);

    border:
        1px solid rgba(96,165,250,0.25);

    color: #93c5fd;

    font-size: 13px;
    font-weight: 700;
}

.hero h1 {
    margin: 0;

    max-width: 900px;

    font-size:
        clamp(44px, 7vw, 82px);

    line-height: 1.04;
    letter-spacing: -3px;
}

.hero-description {
    max-width: 720px;

    margin:
        26px auto 0;

    color: #aeb9ca;

    font-size:
        clamp(16px, 2vw, 20px);
}

.hero-actions {
    display: flex;
    justify-content: center;
    gap: 12px;

    margin-top: 34px;
}

.hero-small {
    margin-top: 16px;

    color: #64748b;

    font-size: 13px;
}


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

.landing-section {
    padding:
        100px 6%;
}

.section-heading {
    max-width: 760px;

    margin:
        0 auto 55px;

    text-align: center;
}

.section-heading span {
    color: #60a5fa;

    font-size: 12px;
    font-weight: 800;
    letter-spacing: 2px;
}

.section-heading h2 {
    margin:
        12px 0 16px;

    font-size:
        clamp(32px, 5vw, 52px);

    line-height: 1.1;
    letter-spacing: -1.5px;
}

.section-heading p {
    margin: 0;

    color: #94a3b8;
    font-size: 17px;
}


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

.feature-grid {
    max-width: 1180px;

    margin: 0 auto;

    display: grid;
    grid-template-columns:
        repeat(3, minmax(0, 1fr));

    gap: 20px;
}

.feature-card {
    min-height: 240px;

    padding: 28px;

    border-radius: 18px;

    background: #111827;

    border:
        1px solid rgba(255,255,255,0.07);

    box-shadow:
        0 18px 45px
        rgba(0,0,0,0.18);
}

.feature-card:hover {
    transform:
        translateY(-4px);

    border-color:
        rgba(96,165,250,0.25);
}

.feature-icon {
    width: 44px;
    height: 44px;

    display: flex;
    align-items: center;
    justify-content: center;

    border-radius: 12px;

    background:
        rgba(37,99,235,0.14);

    color: #93c5fd;

    font-size: 20px;
}

.feature-card h3 {
    margin:
        22px 0 10px;

    font-size: 20px;
}

.feature-card p {
    margin: 0;

    color: #94a3b8;
}


/* ========================================
   STUDENTS
======================================== */

.student-section {
    padding:
        100px 6%;

    background:
        #0f172a;
}

.student-content {
    max-width: 1050px;
    margin: 0 auto;
}

.coming-soon,
.offline-label {
    display: inline-block;

    color: #60a5fa;

    font-size: 11px;
    font-weight: 800;
    letter-spacing: 2px;
}

.student-content > h2 {
    margin:
        12px 0;

    font-size:
        clamp(38px, 6vw, 60px);

    letter-spacing: -2px;
}

.student-lead {
    max-width: 720px;

    color: #aab5c5;

    font-size: 18px;
}

.student-features {
    display: grid;
    grid-template-columns:
        repeat(2, minmax(0,1fr));

    gap: 18px;

    margin-top: 35px;
}

.student-features > div {
    padding: 24px;

    background:
        rgba(255,255,255,0.03);

    border:
        1px solid rgba(255,255,255,0.07);

    border-radius: 16px;
}

.student-features strong {
    font-size: 18px;
}

.student-features p {
    color: #94a3b8;
}

.offline-card {
    margin-top: 26px;

    padding: 34px;

    border-radius: 20px;

    background:
        linear-gradient(
            135deg,
            rgba(37,99,235,0.18),
            rgba(15,23,42,0.9)
        );

    border:
        1px solid rgba(96,165,250,0.22);
}

.offline-card h3 {
    margin:
        10px 0;

    font-size: 28px;
}

.offline-card p {
    max-width: 700px;

    color: #b6c1d1;
}

.offline-coming {
    display: inline-block;

    margin-top: 10px;

    color: #93c5fd;
    font-weight: 700;
}


/* ========================================
   PRICING
======================================== */

.pricing-card {
    max-width: 800px;

    margin: 0 auto;

    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 30px;

    padding: 34px;

    border-radius: 20px;

    background: #111827;

    border:
        1px solid rgba(255,255,255,0.08);
}

.pricing-label {
    color: #60a5fa;

    font-size: 11px;
    font-weight: 800;
    letter-spacing: 2px;
}

.pricing-card h3 {
    margin:
        8px 0;

    font-size: 28px;
}

.pricing-card p {
    margin: 0;

    color: #94a3b8;
}


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

.faq-list {
    max-width: 850px;
    margin: 0 auto;
}

.faq-list details {
    margin-bottom: 12px;

    padding: 20px 22px;

    background: #111827;

    border:
        1px solid rgba(255,255,255,0.07);

    border-radius: 14px;
}

.faq-list summary {
    cursor: pointer;

    font-weight: 700;
}

.faq-list p {
    color: #94a3b8;
}


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

.final-cta {
    max-width: 1100px;

    margin:
        30px auto 100px;

    padding: 45px;

    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 30px;

    border-radius: 24px;

    background:
        linear-gradient(
            135deg,
            #172554,
            #111827
        );

    border:
        1px solid rgba(96,165,250,0.18);
}

.final-cta span {
    color: #60a5fa;

    font-size: 11px;
    font-weight: 800;
    letter-spacing: 2px;
}

.final-cta h2 {
    margin:
        8px 0;

    font-size: 36px;
}

.final-cta p {
    margin: 0;

    color: #a9b5c6;
}


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

.landing-footer {
    padding:
        45px 6%;

    border-top:
        1px solid rgba(255,255,255,0.08);

    color: #94a3b8;
}

.landing-footer > div:first-child {
    max-width: 500px;
}

.landing-footer strong {
    color: #ffffff;
    letter-spacing: 2px;
}

.footer-links {
    display: flex;
    flex-wrap: wrap;
    gap: 20px;

    margin-top: 25px;
}

.footer-links a:hover {
    color: #ffffff;
}

.copyright {
    margin-top: 30px;

    color: #64748b;
    font-size: 13px;
}


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

@media (max-width: 900px) {

    .nav-links {
        display: none;
    }

    .feature-grid {
        grid-template-columns:
            repeat(2, minmax(0,1fr));
    }

    .pricing-card,
    .final-cta {
        flex-direction: column;
        align-items: flex-start;
    }

}


@media (max-width: 640px) {

    .landing-nav {
        padding:
            16px 20px;
    }

    .landing-logo {
        font-size: 18px;
    }

    .login-link {
        display: none;
    }

    .hero {
        padding:
            90px 20px 70px;
    }

    .hero h1 {
        letter-spacing: -2px;
    }

    .hero-actions {
        width: 100%;
        flex-direction: column;
    }

    .hero-actions a {
        width: 100%;
    }

    .landing-section,
    .student-section {
        padding:
            75px 20px;
    }

    .feature-grid,
    .student-features {
        grid-template-columns: 1fr;
    }

    .final-cta {
        margin:
            20px 20px 70px;

        padding: 30px;
    }

}