/*
 * LAYOUT — header, nav, footer, hero
 * krylovakseniia.com
 */

/* ── HEADER ── */
.site-header {
    background-color: rgba(235, 217, 245, 0.96);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--clr-border);
    position: sticky;
    top: 0;
    z-index: 100;
    transition: background-color var(--transition-normal),
                box-shadow var(--transition-normal);
}

.site-header.scrolled {
    background-color: rgba(235, 217, 245, 0.98);
    box-shadow: var(--shadow-sm);
}

.site-header__inner {
    max-width: var(--container-max);
    margin-inline: auto;
    padding-inline: var(--container-pad);
    padding-block: 0.875rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1.5rem;
}

/* ── LOGO ── */
.site-logo {
    display: flex;
    align-items: center;
    gap: 0.625rem;
    text-decoration: none;
}

.site-logo__text {
    font-family: var(--font-heading);
    font-weight: 800;
    font-size: 1.125rem;
    color: var(--clr-purple-dark);
    line-height: 1.2;
}

.site-logo__sub {
    font-size: 0.75rem;
    font-weight: 500;
    color: var(--clr-text-muted);
    display: block;
}

/* ── NAV ── */
.site-nav__list {
    display: flex;
    align-items: center;
    gap: 0.25rem;
}

.site-nav__link {
    color: var(--clr-text);
    font-family: var(--font-heading);
    font-weight: 600;
    font-size: 0.95rem;
    letter-spacing: 0.02em;
    padding: 0.5rem 0.75rem;
    border-radius: var(--radius-sm);
    transition: color var(--transition-fast),
                background-color var(--transition-fast);
}

.site-nav__link:hover,
.site-nav__link.active {
    color: var(--clr-purple-main);
    background-color: var(--clr-purple-faint);
}

/* ── HAMBURGER ── */
.nav-toggle {
    display: none;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    width: 40px;
    height: 40px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
    border-radius: var(--radius-sm);
}

.nav-toggle__bar {
    display: block;
    width: 24px;
    height: 2px;
    background-color: var(--clr-purple-dark);
    border-radius: 2px;
    transition: transform var(--transition-fast), opacity var(--transition-fast);
}

.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
}
.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(2) {
    opacity: 0;
}
.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
}

/* ── FOOTER ── */
.site-footer {
    background-color: var(--clr-purple-deep);
    color: var(--clr-white);
    padding-block: 3rem 1.5rem;
}

.site-footer__inner {
    max-width: var(--container-max);
    margin-inline: auto;
    padding-inline: var(--container-pad);
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    gap: 2rem;
}

.site-footer h3,
.site-footer h4 {
    color: var(--clr-white);
    margin-bottom: 1rem;
    font-size: 1rem;
}

.site-footer p,
.site-footer li {
    color: rgba(255, 255, 255, 0.80);
    font-size: 0.9rem;
    line-height: 1.7;
}

.site-footer a {
    color: var(--clr-purple-pale);
    transition: color var(--transition-fast);
}

.site-footer a:hover {
    color: var(--clr-white);
}

.site-footer__nav {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.site-footer__bottom {
    max-width: var(--container-max);
    margin-inline: auto;
    padding-inline: var(--container-pad);
    padding-top: 1.25rem;
    margin-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.12);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    flex-wrap: wrap;
}

.site-footer__copyright {
    color: rgba(255, 255, 255, 0.60);
    font-size: 0.875rem;
}

.footer-social {
    display: flex;
    gap: 0.75rem;
}

.footer-social a {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    border-radius: var(--radius-full);
    background: rgba(255, 255, 255, 0.10);
    border: 1px solid rgba(255, 255, 255, 0.15);
    color: var(--clr-white);
    font-size: 1rem;
    transition: background-color var(--transition-fast);
}

.footer-social a:hover {
    background: rgba(255, 255, 255, 0.20);
    color: var(--clr-white);
}

/* ── HERO ── */
.hero {
    background: linear-gradient(135deg, var(--clr-bg) 0%, var(--clr-bg-alt) 60%, var(--clr-purple-faint) 100%);
    padding-block: clamp(4rem, 8vw, 7rem);
    position: relative;
    overflow: hidden;
    text-align: center;
}

.hero::after {
    content: '';
    position: absolute;
    top: -40%;
    right: -20%;
    width: 60vw;
    height: 60vw;
    background: radial-gradient(circle, rgba(167, 139, 250, 0.18) 0%, transparent 70%);
    border-radius: var(--radius-full);
    pointer-events: none;
}

.hero__title {
    color: var(--clr-purple-dark);
    margin-bottom: 1rem;
}

.hero__subtitle {
    color: var(--clr-text-sec);
    font-size: clamp(1rem, 2vw, 1.25rem);
    max-width: 640px;
    margin-inline: auto;
    margin-bottom: 2rem;
}

/* ── PAGE TITLE ── */
.page-title {
    color: var(--clr-purple-dark);
    font-family: var(--font-heading);
    margin-bottom: 0.5rem;
}

.page-lead {
    color: var(--clr-text-sec);
    font-size: 1.1rem;
    max-width: 640px;
}