/* ============================================
   NEURALIVO — Header & Footer Styles
   ============================================ */

/* ── Header ── */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: var(--z-header);
    padding: var(--space-md) 0;
    transition: background var(--transition-normal), box-shadow var(--transition-normal), padding var(--transition-normal);
}

.header.scrolled {
    background: rgba(10, 14, 23, 0.92);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    box-shadow: 0 1px 0 var(--border-subtle), var(--shadow-sm);
    padding: var(--space-sm) 0;
}

.header__container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-xl);
}

/* ── Logo ── */
.header__logo {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    text-decoration: none;
    flex-shrink: 0;
}

.header__logo-icon {
    transition: transform var(--transition-smooth);
}

.header__logo:hover .header__logo-icon {
    transform: rotate(10deg) scale(1.05);
}

.header__logo-text {
    font-size: var(--fs-lg);
    font-weight: var(--fw-bold);
    color: var(--text-primary);
    letter-spacing: var(--ls-tight);
}

/* ── Navigation ── */
.header__nav {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
}

.nav__link {
    padding: var(--space-sm) var(--space-md);
    font-size: var(--fs-sm);
    font-weight: var(--fw-medium);
    color: var(--text-secondary);
    text-decoration: none;
    border-radius: var(--radius-md);
    transition: color var(--transition-fast), background var(--transition-fast);
    white-space: nowrap;
}

.nav__link:hover,
.nav__link.active {
    color: var(--text-primary);
    background: rgba(99, 102, 241, 0.08);
}

/* ── Actions ── */
.header__actions {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    flex-shrink: 0;
}

/* ── Hamburger ── */
.header__hamburger {
    display: none;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 5px;
    width: 40px;
    height: 40px;
    background: transparent;
    border: none;
    cursor: pointer;
    z-index: calc(var(--z-overlay) + 1);
    padding: 0;
}

.hamburger__line {
    display: block;
    width: 22px;
    height: 2px;
    background: var(--text-primary);
    border-radius: 2px;
    transition: all var(--transition-normal);
    transform-origin: center;
}

.header__hamburger.active .hamburger__line:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

.header__hamburger.active .hamburger__line:nth-child(2) {
    opacity: 0;
    transform: scaleX(0);
}

.header__hamburger.active .hamburger__line:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
}

/* ═══════════════════════════════════════
   FOOTER
   ═══════════════════════════════════════ */

.footer {
    position: relative;
}

/* ── CTA Bar ── */
.footer__cta-bar {
    position: relative;
    padding: var(--space-5xl) 0;
    overflow: hidden;
}

.footer__cta-bar::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.08) 0%, rgba(6, 182, 212, 0.05) 100%);
    z-index: 0;
}

.footer__cta-bar::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 1px;
    background: var(--accent-gradient);
    opacity: 0.3;
}

.footer__cta-content {
    position: relative;
    z-index: 1;
    text-align: center;
    max-width: 600px;
    margin: 0 auto;
}

.footer__cta-title {
    font-size: clamp(1.75rem, 4vw, 2.5rem);
    font-weight: var(--fw-extrabold);
    margin-bottom: var(--space-lg);
    color: var(--text-heading);
}

.footer__cta-subtitle {
    font-size: var(--fs-md);
    color: var(--text-secondary);
    margin-bottom: var(--space-2xl);
    line-height: var(--lh-relaxed);
}

.footer__cta-buttons {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-lg);
    flex-wrap: wrap;
}

/* ── Main Footer ── */
.footer__main {
    background: var(--bg-secondary);
    padding: var(--space-4xl) 0 var(--space-xl);
    border-top: 1px solid var(--border-subtle);
}

.footer__grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr 1fr;
    gap: var(--space-3xl);
    margin-bottom: var(--space-3xl);
}

/* ── Brand Column ── */
.footer__logo {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    margin-bottom: var(--space-md);
}

.footer__logo span {
    font-size: var(--fs-lg);
    font-weight: var(--fw-bold);
    color: var(--text-primary);
}

.footer__tagline {
    font-size: var(--fs-sm);
    color: var(--text-tertiary);
    font-style: italic;
}

/* ── Footer Columns ── */
.footer__column-title {
    font-size: var(--fs-sm);
    font-weight: var(--fw-semibold);
    color: var(--text-primary);
    text-transform: uppercase;
    letter-spacing: var(--ls-wider);
    margin-bottom: var(--space-lg);
}

.footer__links {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.footer__links a {
    font-size: var(--fs-sm);
    color: var(--text-secondary);
    text-decoration: none;
    transition: color var(--transition-fast);
    padding: var(--space-xs) 0;
}

.footer__links a:hover {
    color: var(--accent-secondary);
}

/* ── Bottom Bar ── */
.footer__bottom {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-top: var(--space-xl);
    border-top: 1px solid var(--border-subtle);
    flex-wrap: wrap;
    gap: var(--space-md);
}

.footer__bottom p {
    font-size: var(--fs-xs);
    color: var(--text-tertiary);
    margin: 0;
}

.footer__legal {
    display: flex;
    gap: var(--space-lg);
}

.footer__legal a {
    font-size: var(--fs-xs);
    color: var(--text-tertiary);
    text-decoration: none;
    transition: color var(--transition-fast);
}

.footer__legal a:hover {
    color: var(--text-secondary);
}