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

.site-header {
    position: relative;
    z-index: 20;

    padding: 22px 0;
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 30px;
}


.brand-mark {
    display: flex;
    align-items: center;
    justify-content: center;

    flex-shrink: 0;
}

.brand-logo-image {
    display: block;

    height: 55px;
    width: auto;

    max-width: 100%;

    object-fit: contain;
}

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

    margin-left: auto;
}

.main-nav a {
    color: var(--text-muted);

    font-size: 14px;
    font-weight: 600;

    transition: color var(--transition);
}

.main-nav a:hover {
    color: var(--text);
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 12px;
}

.theme-toggle {
    display: grid;
    place-items: center;

    width: 48px;
    height: 48px;

    border-radius: 50%;

    background: var(--surface);
    border: 1px solid var(--border);
    color: var(--text);

    cursor: pointer;

    font-size: 19px;

    box-shadow: var(--shadow-sm);

    transition:
        transform var(--transition),
        background-color var(--transition);
}

.theme-toggle:hover {
    transform: translateY(-2px);
}

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

.hero {
    position: relative;

    min-height: calc(100vh - 92px);

    display: flex;
    align-items: center;

    padding: 60px 0 90px;

    overflow: hidden;
}

.hero::before {
    content: "";

    position: absolute;
    width: 580px;
    height: 580px;

    right: -180px;
    top: 10%;

    border-radius: 50%;

    background:
        radial-gradient(circle,
            rgba(217, 164, 72, 0.12),
            transparent 65%);

    pointer-events: none;
}

.hero-grid {
    display: grid;
    grid-template-columns:
        minmax(0, 1.05fr) minmax(420px, 0.95fr);

    align-items: center;

    gap: 80px;
}

.hero-content {
    max-width: 700px;
}

.hero-title {
    margin-top: 28px;

    max-width: 760px;

    font-size: clamp(54px, 7vw, 96px);
    line-height: 0.88;

    letter-spacing: -0.065em;

    font-weight: 900;
}

.hero-title span {
    display: block;

    color: var(--gold);
}

.hero-description {
    margin-top: 30px;

    max-width: 580px;

    color: var(--text-muted);

    font-size: 18px;
    line-height: 1.65;
}

.hero-actions {
    display: flex;
    align-items: center;
    gap: 15px;

    margin-top: 36px;
}

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

.hero-visual {
    position: relative;

    min-height: 530px;

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

.test-preview {
    position: relative;

    width: 100%;
    max-width: 500px;

    padding: 34px;

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

    background:
        linear-gradient(145deg,
            var(--surface),
            var(--surface-soft));

    box-shadow: var(--shadow-md);

    overflow: hidden;
}

.test-preview::before {
    content: "";

    position: absolute;

    width: 220px;
    height: 220px;

    right: -70px;
    top: -80px;

    background: var(--gold);

    opacity: 0.08;

    border-radius: 50%;
}

.preview-top {
    position: relative;

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

    gap: 30px;
}

.preview-label {
    color: var(--text-muted);

    font-size: 12px;
    font-weight: 700;

    letter-spacing: 0.12em;
    text-transform: uppercase;
}

.preview-title {
    margin-top: 9px;

    font-size: 25px;
    font-weight: 800;
}

.preview-timer {
    padding: 10px 14px;

    border: 1px solid var(--border);
    border-radius: 999px;

    background: var(--bg);

    font-size: 13px;
    font-weight: 800;
}

.preview-question {
    margin-top: 44px;

    font-size: 13px;
    color: var(--text-muted);
}

.preview-question strong {
    display: block;

    margin-top: 10px;

    color: var(--text);

    font-size: 18px;
    line-height: 1.45;
}

.preview-options {
    display: grid;

    gap: 10px;

    margin-top: 24px;
}

.preview-option {
    display: flex;
    align-items: center;
    gap: 12px;

    padding: 14px 16px;

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

    background: var(--surface);

    color: var(--text-muted);

    font-size: 14px;
}

.preview-option.active {
    border-color: var(--gold);

    color: var(--text);

    box-shadow:
        inset 3px 0 0 var(--gold);
}

.preview-bottom {
    margin-top: 30px;

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

    gap: 20px;
}

.question-grid {
    display: flex;
    gap: 6px;
}

.question-dot {
    display: grid;
    place-items: center;

    width: 30px;
    height: 30px;

    border-radius: 8px;

    background: var(--surface-soft);

    color: var(--text-muted);

    font-size: 11px;
    font-weight: 700;
}

.question-dot.complete {
    background: var(--gold);
    color: var(--navy);
}

.preview-progress {
    color: var(--text-muted);

    font-size: 12px;
    font-weight: 700;
}

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

.features {
    padding: 20px 0 110px;
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);

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

.feature-card {
    min-height: 210px;

    padding: 40px;

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

.feature-card:last-child {
    border-right: none;
}

.feature-number {
    color: var(--gold);

    font-size: 12px;
    font-weight: 900;

    letter-spacing: 0.14em;
}

.feature-card h3 {
    margin-top: 28px;

    font-size: 24px;
}

.feature-card p {
    margin-top: 12px;

    color: var(--text-muted);

    line-height: 1.6;

    font-size: 14px;
}

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

.public-footer {
    padding: 30px 0;

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

.footer-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;

    gap: 20px;

    color: var(--text-muted);

    font-size: 12px;
}

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

@media (max-width: 1000px) {

    .main-nav {
        display: none;
    }

    .hero-grid {
        grid-template-columns: 1fr;

        gap: 50px;
    }

    .hero-visual {
        min-height: auto;
    }

    .test-preview {
        max-width: 620px;
    }
}

@media (max-width: 700px) {

    .container {
        width: min(calc(100% - 24px), var(--container));
    }

    .brand-text {
        display: none;
    }

    .header-actions .btn {
        padding: 0 17px;

        font-size: 13px;
    }

    .hero {
        padding-top: 30px;
    }

    .hero-title {
        font-size: clamp(48px, 15vw, 70px);
    }

    .hero-description {
        font-size: 16px;
    }

    .hero-actions {
        flex-direction: column;
        align-items: stretch;
    }

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

    .feature-card {
        border-right: none;
        border-bottom: 1px solid var(--border);
    }

    .feature-card:last-child {
        border-bottom: none;
    }

    .test-preview {
        padding: 24px;
    }

    .footer-inner {
        flex-direction: column;
        align-items: flex-start;
    }
}