/* ============================================
   NEURALIVO — Layout System
   ============================================ */

/* ── Container ── */
.container {
    width: 100%;
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--space-xl);
}

.container--wide {
    max-width: var(--container-wide);
}

.container--narrow {
    max-width: var(--container-narrow);
}

/* ── Main Content ── */
main {
    padding-top: var(--header-height);
    min-height: 100vh;
    opacity: 0;
    transition: opacity 0.6s ease;
}

body.page-loaded main {
    opacity: 1;
}

/* ── Sections ── */
.section {
    padding: var(--section-padding) 0;
    position: relative;
    overflow: hidden;
}

.section--alt {
    background: var(--bg-secondary);
}

.section--dark {
    background: var(--bg-primary);
}

.section--gradient {
    background: linear-gradient(180deg, var(--bg-primary) 0%, var(--bg-secondary) 50%, var(--bg-primary) 100%);
}

.section__header {
    text-align: center;
    margin-bottom: var(--space-4xl);
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

.section__label {
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    font-family: var(--font-mono);
    font-size: var(--fs-sm);
    font-weight: var(--fw-medium);
    color: var(--accent-secondary);
    text-transform: uppercase;
    letter-spacing: var(--ls-wider);
    margin-bottom: var(--space-lg);
    padding: var(--space-xs) var(--space-md);
    background: rgba(6, 182, 212, 0.08);
    border: 1px solid rgba(6, 182, 212, 0.2);
    border-radius: var(--radius-full);
}

.section__label::before {
    content: '';
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--accent-secondary);
    box-shadow: 0 0 8px var(--accent-secondary);
}

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

.section__subtitle {
    font-size: var(--fs-md);
    color: var(--text-secondary);
    line-height: var(--lh-relaxed);
}

/* ── Grids ── */
.grid {
    display: grid;
    gap: var(--space-xl);
}

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

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

.grid--4 {
    grid-template-columns: repeat(4, 1fr);
}

.grid--5 {
    grid-template-columns: repeat(5, 1fr);
}

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

/* ── Flex Utilities ── */
.flex {
    display: flex;
}

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

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

.flex--wrap {
    display: flex;
    flex-wrap: wrap;
}

.flex--column {
    display: flex;
    flex-direction: column;
}

.flex--gap-sm {
    gap: var(--space-sm);
}

.flex--gap-md {
    gap: var(--space-md);
}

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

.flex--gap-xl {
    gap: var(--space-xl);
}

/* ── Decorative Elements ── */
.section__orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.3;
    pointer-events: none;
    z-index: var(--z-behind);
}

.section__orb--primary {
    background: var(--accent-primary);
    width: 400px;
    height: 400px;
}

.section__orb--secondary {
    background: var(--accent-secondary);
    width: 300px;
    height: 300px;
}

/* ── Dividers ── */
.divider {
    width: 100%;
    height: 1px;
    background: var(--border-subtle);
    border: none;
}

.divider--gradient {
    background: var(--accent-gradient);
    height: 2px;
    opacity: 0.3;
}