/**
 * ============================================
 * LAYOUT SYSTEM - Grid, Container, Sections
 * F1.2 UI SYSTEM - Cyto (Web Pública)
 * ============================================
 */

/* Container */
.container {
    width: 100%;
    max-width: var(--container-max-width);
    margin-left: auto;
    margin-right: auto;
    padding-left: var(--space-md);
    padding-right: var(--space-md);
}

@media (min-width: 640px) {
    .container {
        padding-left: var(--space-lg);
        padding-right: var(--space-lg);
    }
}

/* Grid system */
.grid {
    display: grid;
    gap: var(--space-lg);
}

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

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

.grid-cols-3 {
    grid-template-columns: repeat(3, minmax(0, 1fr));
}

.grid-cols-4 {
    grid-template-columns: repeat(4, minmax(0, 1fr));
}

@media (min-width: 768px) {
    .md\:grid-cols-2 {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
    .md\:grid-cols-3 {
        grid-template-columns: repeat(3, minmax(0, 1fr));
    }
    .md\:grid-cols-4 {
        grid-template-columns: repeat(4, minmax(0, 1fr));
    }
}

@media (min-width: 1024px) {
    .lg\:grid-cols-2 {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
    .lg\:grid-cols-3 {
        grid-template-columns: repeat(3, minmax(0, 1fr));
    }
    .lg\:grid-cols-4 {
        grid-template-columns: repeat(4, minmax(0, 1fr));
    }
}

/* Flexbox utilities */
.flex {
    display: flex;
}

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

.items-center {
    align-items: center;
}

.items-start {
    align-items: flex-start;
}

.items-end {
    align-items: flex-end;
}

.justify-center {
    justify-content: center;
}

.justify-between {
    justify-content: space-between;
}

.justify-end {
    justify-content: flex-end;
}

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

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

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

/* Sections */
.section {
    padding: var(--space-2xl) 0;
}

@media (min-width: 768px) {
    .section {
        padding: var(--space-3xl) 0;
    }
}

.section-header {
    margin-bottom: var(--space-xl);
}

.section-title {
    font-size: var(--text-3xl);
    margin-bottom: var(--space-sm);
}

.section-subtitle {
    font-size: var(--text-lg);
    color: var(--color-text-secondary);
    max-width: 600px;
}

/* Header (Web Pública) */
.header {
    position: sticky;
    top: 0;
    z-index: var(--z-sticky);
    background-color: var(--color-bg-secondary);
    box-shadow: var(--shadow-sm);
    height: var(--header-height);
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 100%;
}

.header-logo {
    font-size: var(--text-xl);
    font-weight: var(--font-bold);
    color: var(--color-text-primary);
}

.header-nav {
    display: flex;
    gap: var(--space-lg);
    align-items: center;
}

.header-nav-link {
    font-size: var(--text-sm);
    font-weight: var(--font-medium);
    color: var(--color-text-secondary);
    transition: color var(--transition-fast);
}

.header-nav-link:hover {
    color: var(--color-primary);
    text-decoration: none;
}

/* Footer */
.footer {
    background-color: var(--color-bg-secondary);
    border-top: 1px solid var(--color-border);
    padding: var(--space-2xl) 0 var(--space-lg);
    margin-top: var(--space-3xl);
}

.footer-grid {
    display: grid;
    gap: var(--space-xl);
    grid-template-columns: 1fr;
}

@media (min-width: 768px) {
    .footer-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

/* Sticky bottom CTA (mobile only) */
.sticky-cta {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    z-index: var(--z-fixed);
    background-color: var(--color-bg-secondary);
    box-shadow: 0 -2px 10px var(--color-shadow);
    padding: var(--space-md);
    transform: translateY(100%);
    transition: transform var(--transition-base);
}

.sticky-cta.is-visible {
    transform: translateY(0);
}

.sticky-cta-inner {
    display: flex;
    gap: var(--space-md);
    max-width: var(--container-max-width);
    margin: 0 auto;
}

@media (min-width: 768px) {
    .sticky-cta {
        display: none;
    }
}

/* Main content wrapper */
.main {
    min-height: calc(100vh - var(--header-height));
}

/* Page wrapper */
.page-wrapper {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}