/* ============================================
   JAÉN SPORTS — Layout System
   Grid, Containers, Responsive, Header, Footer
   ============================================ */

/* ---------- Container ---------- */
.container {
    width: 100%;
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 var(--space-6);
}

.container-sm {
    max-width: 960px;
    margin: 0 auto;
    padding: 0 var(--space-6);
}

.container-lg {
    max-width: 1440px;
    margin: 0 auto;
    padding: 0 var(--space-6);
}

/* ---------- Section ---------- */
.section {
    padding: var(--space-20) 0;
}

.section-sm {
    padding: var(--space-12) 0;
}

.section-lg {
    padding: var(--space-24) 0;
}

.section-header {
    text-align: center;
    max-width: 720px;
    margin: 0 auto var(--space-16);
}

.section-header .tag {
    display: inline-block;
    font-size: var(--text-sm);
    font-weight: var(--weight-semibold);
    color: var(--color-primary-500);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: var(--space-3);
}

.section-header h2 {
    margin-bottom: var(--space-4);
}

.section-header p {
    font-size: var(--text-lg);
    color: var(--color-gray-500);
    max-width: 600px;
    margin: 0 auto;
}

/* ---------- Flexbox Utilities ---------- */
.flex {
    display: flex;
}

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

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

.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-1 {
    gap: var(--space-1);
}

.gap-2 {
    gap: var(--space-2);
}

.gap-3 {
    gap: var(--space-3);
}

.gap-4 {
    gap: var(--space-4);
}

.gap-6 {
    gap: var(--space-6);
}

.gap-8 {
    gap: var(--space-8);
}

/* ---------- Grid Utilities ---------- */
.grid {
    display: grid;
    gap: var(--space-6);
}

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

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

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

/* ---------- Header / Navigation ---------- */
.site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: var(--z-sticky);
    background: rgba(255, 255, 255, 0.85);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid rgba(0, 0, 0, 0.06);
    transition: background var(--transition-base), box-shadow var(--transition-base);
}

.site-header.scrolled {
    background: rgba(255, 255, 255, 0.98);
    box-shadow: var(--shadow-sm);
}

/* Lock scroll when mobile menu open */
body.nav-open {
    overflow: hidden;
    touch-action: none;
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
}

.logo {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    font-family: var(--font-heading);
    font-weight: var(--weight-extrabold);
    font-size: var(--text-xl);
    color: var(--color-primary-900);
}

.logo svg {
    width: 36px;
    height: 36px;
}

.logo span {
    color: var(--color-primary-500);
}

.nav-links {
    display: flex;
    align-items: center;
    gap: var(--space-8);
}

.nav-links a {
    font-size: var(--text-sm);
    font-weight: var(--weight-medium);
    color: var(--color-gray-600);
    transition: color var(--transition-fast);
    position: relative;
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--color-primary-500);
    transition: width var(--transition-base);
    border-radius: var(--radius-full);
}

.nav-links a:hover,
.nav-links a.active {
    color: var(--color-primary-500);
}

.nav-links a:hover::after,
.nav-links a.active::after {
    width: 100%;
}

.nav-actions {
    display: flex;
    align-items: center;
    gap: var(--space-3);
}

/* Mobile Menu Toggle */
.menu-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    width: 28px;
    cursor: pointer;
    padding: var(--space-2);
}

.menu-toggle span {
    display: block;
    width: 100%;
    height: 2px;
    background: var(--color-gray-700);
    border-radius: var(--radius-full);
    transition: transform var(--transition-base), opacity var(--transition-fast);
}

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

.menu-toggle.active span:nth-child(2) {
    opacity: 0;
}

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

/* ---------- Footer ---------- */
.site-footer {
    background: var(--color-primary-900);
    color: var(--color-gray-300);
    padding: var(--space-16) 0 var(--space-8);
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: var(--space-10);
    margin-bottom: var(--space-12);
}

.footer-brand p {
    color: var(--color-gray-400);
    margin-top: var(--space-4);
    max-width: 300px;
    font-size: var(--text-sm);
    line-height: var(--leading-relaxed);
}

.footer-col h4 {
    color: var(--color-white);
    font-size: var(--text-sm);
    font-weight: var(--weight-semibold);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    margin-bottom: var(--space-4);
}

.footer-col a {
    display: block;
    font-size: var(--text-sm);
    color: var(--color-gray-400);
    padding: var(--space-1) 0;
    transition: color var(--transition-fast), padding-left var(--transition-fast);
}

.footer-col a:hover {
    color: var(--color-white);
    padding-left: var(--space-2);
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: var(--space-8);
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-size: var(--text-sm);
    color: var(--color-gray-500);
}

.footer-social {
    display: flex;
    gap: var(--space-4);
}

.footer-social a {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-full);
    background: rgba(255, 255, 255, 0.08);
    color: var(--color-gray-400);
    transition: background var(--transition-fast), color var(--transition-fast);
}

.footer-social a:hover {
    background: var(--color-primary-500);
    color: var(--color-white);
}

/* ---------- Main Content Offset ---------- */
.main-content {
    padding-top: 72px;
    min-height: 100vh;
}

/* ---------- Responsive ---------- */
@media (max-width: 1024px) {
    .grid-4 {
        grid-template-columns: repeat(2, 1fr);
    }

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

@media (max-width: 768px) {
    h1 {
        font-size: var(--text-4xl);
    }

    h2 {
        font-size: var(--text-3xl);
    }

    .section {
        padding: var(--space-12) 0;
    }

    .section-lg {
        padding: var(--space-16) 0;
    }

    .section-header {
        margin-bottom: var(--space-10);
    }

    .grid-2,
    .grid-3,
    .grid-4 {
        grid-template-columns: 1fr;
    }

    .nav-links {
        display: none;
        /* Use absolute inside expanded header to avoid backdrop-filter fixed-position quirks */
        position: absolute;
        top: 64px;
        left: 0;
        right: 0;
        bottom: 0;
        background: #ffffff;
        flex-direction: column;
        align-items: center;
        justify-content: flex-start;
        gap: 0;
        z-index: var(--z-overlay);
        padding: var(--space-8) var(--space-6);
        overflow-y: auto;
        -webkit-overflow-scrolling: touch;
        overscroll-behavior: contain;
        box-shadow: 0 4px 20px rgba(0,0,0,0.1);
    }

    .nav-links.open {
        display: flex;
        animation: fadeIn 0.3s ease;
    }

    /* Expand header to full height when menu open */
    .site-header.nav-open {
        height: 100dvh;
        background: #ffffff;
        backdrop-filter: none;
        -webkit-backdrop-filter: none;
        box-shadow: var(--shadow-sm);
    }
    .site-header.nav-open.scrolled {
        background: #ffffff;
    }

    .nav-links a {
        font-size: var(--text-lg);
        font-weight: var(--weight-medium);
        color: var(--color-gray-800);
        padding: var(--space-4) var(--space-4);
        width: 100%;
        text-align: center;
        border-bottom: 1px solid var(--color-gray-100);
    }

    .nav-links a:last-of-type {
        border-bottom: none;
    }

    .nav-links a:hover,
    .nav-links a.active {
        color: var(--color-primary-600);
        background: var(--color-primary-50);
    }

    .menu-toggle {
        display: flex;
    }

    .nav-actions .btn-sm {
        display: flex;
    }

    .footer-grid {
        grid-template-columns: 1fr;
        gap: var(--space-8);
    }

    .footer-bottom {
        flex-direction: column;
        gap: var(--space-4);
        text-align: center;
    }

    .header-inner {
        height: 64px;
    }

    .main-content {
        padding-top: 64px;
    }
}

@media (max-width: 480px) {
    h1 {
        font-size: var(--text-3xl);
    }

    h2 {
        font-size: var(--text-2xl);
    }

    .container {
        padding: 0 var(--space-4);
    }
}