/* ============================================
   LAYOUT
   Page structure, sections, and grids
   ============================================ */

/* Header */
.header {
    position: sticky;
    top: 0;
    z-index: var(--z-sticky);
    background: white;
    box-shadow: var(--shadow-sm);
}

/* Navigation */
.nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-block: var(--spacing-sm);
    gap: var(--spacing-md);
}

.nav__logo img {
    height: 50px;
    width: auto;
}

.nav__toggle {
    display: none;
    flex-direction: column;
    gap: 4px;
    padding: var(--spacing-xs);
    z-index: var(--z-fixed);
}

.nav__toggle-icon,
.nav__toggle-icon::before,
.nav__toggle-icon::after {
    width: 24px;
    height: 3px;
    background: var(--color-primary);
    border-radius: 3px;
    transition: all var(--transition);
}

.nav__toggle-icon::before,
.nav__toggle-icon::after {
    content: '';
    display: block;
}

.nav__toggle-icon::before {
    transform: translateY(-8px);
}

.nav__toggle-icon::after {
    transform: translateY(5px);
}

.nav__toggle[aria-expanded="true"] .nav__toggle-icon {
    background: transparent;
}

.nav__toggle[aria-expanded="true"] .nav__toggle-icon::before {
    transform: rotate(45deg);
}

.nav__toggle[aria-expanded="true"] .nav__toggle-icon::after {
    transform: rotate(-45deg) translateY(0);
}

.nav__menu {
    display: flex;
    gap: var(--spacing-md);
    list-style: none;
}

.nav__item {
    position: relative;
}

.nav__link {
    display: block;
    position: relative;
    padding: var(--spacing-xs) var(--spacing-sm);
    font-weight: 600;
    color: var(--color-text);
    transition: color var(--transition);
}

.nav__link:hover,
.nav__link.active {
    color: var(--color-secondary);
}

.nav__link.active::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 60%;
    height: 2px;
    background: var(--color-secondary);
}

.nav__actions {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

/* Mobile Navigation */
@media (max-width: 768px) {
    .nav {
        gap: 0.75rem;
        padding-block: 0.75rem;
    }

    .nav__logo img {
        width: 104px;
        height: auto;
        max-width: 28vw;
    }

    .nav__actions {
        gap: 0.5rem;
    }

    .nav__actions .social-links {
        display: none;
    }

    .nav__toggle {
        display: flex;
    }
    
    .nav__menu {
        display: none;
        position: fixed;
        top: 0;
        right: 0;
        width: 80%;
        max-width: 300px;
        height: 100vh;
        background: white;
        flex-direction: column;
        padding: var(--spacing-xl) var(--spacing-md);
        box-shadow: var(--shadow-lg);
        transform: none;
    }
    
    [dir="ltr"] .nav__menu {
        right: auto;
        left: 0;
    }
    
    .nav__menu.open {
        display: flex;
    }
    
    .nav__link.active::after {
        left: 0;
        transform: none;
        width: 3px;
        height: 100%;
    }
}

/* Hero Section */
.hero {
    position: relative;
    color: white;
    text-align: center;
    padding-block: var(--spacing-lg);
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 100%;
    max-width: 1400px;
    height: 100%;
    background-image: url('../images/Group-211.webp');
    background-size: contain;
    background-position: center center;
    background-repeat: no-repeat;
    border-radius: 0 0 var(--border-radius) var(--border-radius);
    z-index: -1;
}

.hero .container {
    max-width: 900px;
    padding-block: var(--spacing-md);
}

.hero__heading {
    font-size: clamp(2.5rem, 6vw, 3.5rem);
    margin-bottom: var(--spacing-sm);
    color: white;
}

.hero__subheading {
    font-size: clamp(1.25rem, 3vw, 1.75rem);
    font-weight: 400;
    margin-bottom: var(--spacing-md);
}

.hero__description {
    font-size: var(--font-size-lg);
    max-width: 700px;
    margin-inline: auto;
    opacity: 0.95;
    line-height: 1.7;
}

@media (max-width: 768px) {
    .hero {
        padding-block: var(--spacing-sm);
    }

    .hero::before {
        background-size: cover;
        background-position: center top;
    }

    .hero .container {
        padding-block: var(--spacing-lg);
        padding-inline: var(--spacing-md);
    }

    [data-page="home"] .hero {
        min-height: min(68svh, 520px);
        display: flex;
        align-items: center;
        padding-block: 0;
    }

    [data-page="home"] .hero .container {
        padding-block: clamp(2rem, 8svh, 4rem);
    }

    [data-page="home"] .hero__heading {
        font-size: clamp(1.85rem, 8.5vw, 2.35rem);
        line-height: 1.08;
        margin-bottom: 0.35rem;
        max-width: 100%;
    }

    [data-page="home"] .hero__subheading {
        font-size: clamp(0.95rem, 4.3vw, 1.2rem);
        line-height: 1.25;
        margin-bottom: 0;
        max-width: 100%;
    }

    [data-page="home"] .hero__description {
        display: none;
    }
}

/* Section Base */
.section {
    padding-block: var(--spacing-xl);
}

@media (max-width: 768px) {
    .section {
        padding-block: 3rem;
    }
}

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

.section__header {
    text-align: center;
    margin-bottom: var(--spacing-lg);
}

.section__eyebrow {
    display: block;
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: var(--color-secondary);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: var(--spacing-xs);
}

.section__heading {
    font-size: clamp(2rem, 4vw, 2.5rem);
    margin-bottom: var(--spacing-sm);
}

/* Questions section: eyebrow "We're Investigating Solutions" is small+normal weight above the larger h2 */
.section--questions .section__eyebrow {
    font-size: clamp(1rem, 2vw, 1.25rem);
    text-transform: none;
    letter-spacing: normal;
    color: var(--color-primary);
    font-weight: 400;
    display: block;
    margin-bottom: var(--spacing-xs);
}

.section__text {
    font-size: var(--font-size-lg);
    color: var(--color-text);
    white-space: pre-line;
    margin-bottom: var(--spacing-md);
}

.section__cta {
    text-align: center;
    margin-top: var(--spacing-lg);
}

@media (max-width: 768px) {
    .section__header {
        margin-bottom: 2rem;
    }

    .section__heading {
        font-size: clamp(1.55rem, 7vw, 2rem);
        line-height: 1.15;
        overflow-wrap: anywhere;
    }

    .section__cta {
        margin-top: 2rem;
    }

    #partners.section,
    #supporters.section {
        padding-block: 2.25rem;
    }

    #partners .section__heading,
    #supporters .section__heading {
        margin-bottom: 1rem;
    }
}

/* Section Grid (for about section) */
.section-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
    align-items: center;
}

@media (min-width: 768px) {
    .section-grid {
        grid-template-columns: 1fr 1fr;
    }
}

.section__content {
    max-width: 600px;
}

.section__media {
    margin: 0;
}

.section__media img {
    width: 100%;
    height: auto;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-md);
}

/* Footer */
.footer {
    background: var(--color-bg-dark);
    color: white;
    padding-block: var(--spacing-xl);
    margin-top: var(--spacing-xl);
}

.footer a {
    color: rgba(255, 255, 255, 0.8);
}

.footer a:hover {
    color: white;
}

.footer__grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
}

@media (min-width: 768px) {
    .footer__grid {
        grid-template-columns: 2fr 1fr 1fr 2fr;
    }
}

.footer__brand {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.footer__logo {
    width: 150px;
    height: auto;
}

.footer__description {
    opacity: 0.8;
}

.footer__email {
    font-weight: 600;
}

.footer__nav {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-lg);
}

.footer__nav-section {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.footer__heading {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-sm);
    color: white;
}

.footer__nav-section ul {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.footer__bottom {
    padding-top: var(--spacing-md);
    border-top: 1px solid rgba(255, 255, 255, 0.2);
    text-align: center;
}

.footer__copyright {
    font-size: var(--font-size-sm);
    opacity: 0.8;
}

/* Responsive Utilities */
@media (max-width: 767px) {
    .hide-mobile {
        display: none !important;
    }
}

@media (min-width: 768px) {
    .hide-desktop {
        display: none !important;
    }
}

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

.grid-2 {
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
}

.grid-3 {
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
}

.grid-4 {
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
}

/* Spacing Utilities */
.mt-0 { margin-top: 0; }
.mt-sm { margin-top: var(--spacing-sm); }
.mt-md { margin-top: var(--spacing-md); }
.mt-lg { margin-top: var(--spacing-lg); }
.mt-xl { margin-top: var(--spacing-xl); }

.mb-0 { margin-bottom: 0; }
.mb-sm { margin-bottom: var(--spacing-sm); }
.mb-md { margin-bottom: var(--spacing-md); }
.mb-lg { margin-bottom: var(--spacing-lg); }
.mb-xl { margin-bottom: var(--spacing-xl); }

.pt-0 { padding-top: 0; }
.pt-sm { padding-top: var(--spacing-sm); }
.pt-md { padding-top: var(--spacing-md); }
.pt-lg { padding-top: var(--spacing-lg); }
.pt-xl { padding-top: var(--spacing-xl); }

.pb-0 { padding-bottom: 0; }
.pb-sm { padding-bottom: var(--spacing-sm); }
.pb-md { padding-bottom: var(--spacing-md); }
.pb-lg { padding-bottom: var(--spacing-lg); }
.pb-xl { padding-bottom: var(--spacing-xl); }