/* dnafoundations.co.nz - Main stylesheet */

/* MARK: CSS Variables - Core design tokens */
:root {
    --color-primary: #1e242b;
    --color-secondary: #2c353f;
    --color-accent: #c62828;
    --color-accent-hover: #9e1f1f;
    --color-signal: #d4a017;
    --color-text: #2c353f;
    --color-text-light: #5c6670;
    --color-bg: #f3f4f5;
    --color-white: #fff;
    --color-concrete: #d5d8dc;
    
    --font-main: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 4rem;
    --spacing-xl: 6rem;
    
    --max-width: 1200px;
    --border-radius: 4px;
    --transition: 0.3s ease;
}

/* MARK: Reset & Base - Foundation styles */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
    scroll-padding-top: 80px;
}

body {
    font-family: var(--font-main);
    font-size: 16px;
    line-height: 1.6;
    color: var(--color-text);
    background: var(--color-bg);
}

img {
    max-width: 100%;
    height: auto;
}

a {
    color: var(--color-accent);
    text-decoration: none;
    transition: color var(--transition);
}

a:hover {
    color: var(--color-primary);
}

.container {
    width: 100%;
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 var(--spacing-sm);
}

/* MARK: Header - Navigation and branding */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    background: var(--color-primary);
    padding: var(--spacing-sm) 0;
}

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

.nav {
    display: flex;
    gap: 0.35rem;
    position: relative;
}

.nav-underline {
    position: absolute;
    bottom: 0.2rem;
    height: 2px;
    background: var(--color-accent);
    transition: left var(--transition), width var(--transition), opacity var(--transition);
    opacity: 0;
    pointer-events: none;
}

.nav-underline.active {
    opacity: 1;
}

.nav a {
    color: var(--color-concrete);
    font-size: 0.82rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    padding: 0.55rem 0.85rem;
    border-radius: var(--border-radius);
    transition:
        color var(--transition),
        background var(--transition);
}

.nav a:hover {
    color: var(--color-white);
    background: rgba(255, 255, 255, 0.06);
}

.nav a.active {
    color: var(--color-white);
    background: rgba(198, 40, 40, 0.14);
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--spacing-xs);
}

.nav-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--color-white);
    transition: var(--transition);
}

/* MARK: Hero - Main landing section */
.hero {
    background:
        linear-gradient(
            90deg,
            rgba(243, 244, 245, 0.55) 0%,
            rgba(243, 244, 245, 0.28) 26%,
            rgba(243, 244, 245, 0.08) 44%,
            transparent 58%
        ),
        linear-gradient(135deg, rgba(212, 160, 23, 0.05) 0%, transparent 42%),
        linear-gradient(135deg, #36404a 0%, var(--color-primary) 100%);
    color: var(--color-white);
    padding: calc(var(--spacing-xl) + 60px) 0 var(--spacing-xl);
    min-height: 78vh;
    display: flex;
    align-items: center;
}

.hero-layout {
    display: grid;
    grid-template-columns: minmax(180px, 0.9fr) minmax(0, 1.2fr);
    align-items: center;
    gap: clamp(1.5rem, 4vw, 4rem);
}

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

.hero-logo {
    display: block;
    width: min(100%, 440px);
    height: auto;
    opacity: 0;
    transform: translateY(12px);
    filter: drop-shadow(0 10px 28px rgba(30, 36, 43, 0.2));
    animation: hero-logo-in 0.9s ease forwards;
}

.hero-copy {
    opacity: 0;
    transform: translateY(10px);
    animation: hero-copy-in 0.8s ease 0.15s forwards;
}

.hero h1 {
    font-size: clamp(2rem, 5vw, 3.5rem);
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: var(--spacing-sm);
    color: var(--color-white);
    text-shadow: 0 1px 18px rgba(0, 0, 0, 0.25);
}

.hero .tagline {
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 0.25em;
    color: var(--color-signal);
    margin-bottom: var(--spacing-xs);
    font-weight: 600;
}

.hero-copy p {
    font-size: 1.1rem;
    color: #e8eaec;
    margin-bottom: var(--spacing-md);
    max-width: 500px;
}

@keyframes hero-logo-in {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes hero-copy-in {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.btn {
    display: inline-block;
    background: var(--color-accent);
    color: var(--color-white);
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: 1rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    border-radius: var(--border-radius);
    transition: background var(--transition), transform var(--transition);
}

.btn:hover {
    background: var(--color-accent-hover);
    color: var(--color-white);
    transform: translateY(-2px);
}

/* MARK: Services - Service offerings grid */
.services {
    padding: var(--spacing-xl) 0;
    background: var(--color-white);
}

.services h2,
.about h2 {
    font-size: clamp(1.75rem, 4vw, 2.5rem);
    color: var(--color-primary);
    margin-bottom: var(--spacing-lg);
    text-align: center;
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-md);
}

.service-card {
    background: var(--color-bg);
    border-radius: var(--border-radius);
    overflow: hidden;
    border-left: 4px solid var(--color-accent);
    transition: transform var(--transition), box-shadow var(--transition);
}

.service-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 10px 30px rgba(30, 36, 43, 0.12);
}

.service-media {
    height: 118px;
    overflow: hidden;
    background: var(--color-secondary);
}

.service-media img {
    display: block;
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center 40%;
}

.service-card:nth-child(2) .service-media img {
    object-position: center 55%;
}

.service-card:nth-child(3) .service-media img {
    object-position: center 30%;
}

.service-card:nth-child(4) .service-media img {
    object-position: center 65%;
}

.service-body {
    padding: var(--spacing-md);
}

.service-card h3 {
    font-size: 1.2rem;
    color: var(--color-primary);
    margin-bottom: var(--spacing-xs);
}

.service-card p {
    color: var(--color-text-light);
    font-size: 0.95rem;
}

/* MARK: About - Company information */
.about {
    padding: var(--spacing-xl) 0;
    background: var(--color-concrete);
}

.about-content {
    max-width: 780px;
    margin: 0 auto;
    text-align: center;
}

.about-content p {
    margin-bottom: var(--spacing-sm);
    color: var(--color-text);
}

.about-points {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-md);
    margin: var(--spacing-lg) 0 var(--spacing-md);
    text-align: left;
}

.about-point h3 {
    font-size: 1.05rem;
    color: var(--color-primary);
    margin-bottom: var(--spacing-xs);
}

.about-point p {
    margin-bottom: 0;
    font-size: 0.95rem;
    color: var(--color-text-light);
}

.about-list {
    list-style: none;
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--spacing-sm) var(--spacing-md);
    margin-top: var(--spacing-md);
}

.about-list li {
    background: var(--color-white);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--border-radius);
    font-size: 0.9rem;
    color: var(--color-secondary);
    font-weight: 500;
}

/* MARK: Footer - Site footer */
.footer {
    background: var(--color-primary);
    color: var(--color-concrete);
    padding: var(--spacing-md) 0;
    text-align: center;
}

.footer p {
    font-size: 0.85rem;
}

/* MARK: Mobile - Responsive breakpoints */
@media (max-width: 768px) {
    .header .container {
        justify-content: flex-end;
    }

    .nav-toggle {
        display: flex;
    }
    
    .nav {
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        flex-direction: column;
        background: var(--color-primary);
        padding: 0 var(--spacing-sm);
        max-height: 0;
        overflow: hidden;
        transition: max-height var(--transition), padding var(--transition);
    }
    
    .nav.active {
        max-height: 300px;
        padding: var(--spacing-sm);
    }
    
    .nav a {
        padding: var(--spacing-sm);
        border-radius: 0;
        background: transparent;
        border-bottom: 1px solid var(--color-secondary);
    }
    
    .nav a:last-child {
        border-bottom: none;
    }

    .nav a:hover,
    .nav a.active {
        background: rgba(198, 40, 40, 0.12);
    }

    .nav-underline {
        display: none;
    }
    
    .hero {
        min-height: 60vh;
        padding-top: calc(var(--spacing-lg) + 60px);
        background:
            linear-gradient(
                180deg,
                rgba(243, 244, 245, 0.5) 0%,
                rgba(243, 244, 245, 0.22) 30%,
                rgba(243, 244, 245, 0.06) 48%,
                transparent 60%
            ),
            linear-gradient(135deg, rgba(212, 160, 23, 0.05) 0%, transparent 42%),
            linear-gradient(160deg, #36404a 0%, var(--color-primary) 100%);
    }

    .hero-layout {
        grid-template-columns: 1fr;
        justify-items: center;
        text-align: center;
        gap: var(--spacing-md);
    }

    .hero-logo {
        width: min(68vw, 280px);
    }

    .hero-copy p {
        margin-left: auto;
        margin-right: auto;
    }
    
    .services,
    .about {
        padding: var(--spacing-lg) 0;
    }
    
    .services h2,
    .about h2 {
        margin-bottom: var(--spacing-md);
    }

    .about-points {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
        text-align: center;
    }
}

@media (max-width: 480px) {
    .hero-logo {
        width: min(72vw, 240px);
    }
}

@media (prefers-reduced-motion: reduce) {
    .hero-logo,
    .hero-copy {
        opacity: 1;
        transform: none;
        animation: none;
    }
}

/* MARK: Not Found */
/* Cloudflare Pages 404 — hero gradient atmosphere */
.not-found-page {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 40px 20px;
    background:
        linear-gradient(
            90deg,
            rgba(243, 244, 245, 0.55) 0%,
            rgba(243, 244, 245, 0.28) 26%,
            rgba(243, 244, 245, 0.08) 44%,
            transparent 58%
        ),
        linear-gradient(135deg, rgba(212, 160, 23, 0.05) 0%, transparent 42%),
        linear-gradient(135deg, #36404a 0%, var(--color-primary) 100%);
    color: var(--color-white);
}

.not-found-content {
    max-width: 480px;
    width: 100%;
    margin: 0 auto;
    text-align: center;
}

.not-found-logo {
    display: block;
    width: min(100%, 220px);
    height: auto;
    margin: 0 auto 24px;
    filter: drop-shadow(0 10px 28px rgba(30, 36, 43, 0.2));
}

.not-found-content h1 {
    margin: 0 0 12px;
    font-size: clamp(1.75rem, 4vw, 2.25rem);
    font-weight: 700;
    color: var(--color-white);
}

.not-found-content p {
    margin: 0 0 28px;
    font-size: 1.1rem;
    line-height: 1.6;
    color: rgba(255, 255, 255, 0.85);
}