/* ---------- Reset ---------- */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

img {
    max-width: 100%;
    display: block;
}

ul {
    list-style: none;
}

a {
    text-decoration: none;
    color: inherit;
}

/* ---------- Design tokens ---------- */
:root {
    /* Colors */
    --color-ink-navy: #14213D;
    --color-deep-navy: #0F1B33;
    --color-slate: #4A5A73;
    --color-light-slate: #A9B4C2;
    --color-cyan: #2FB9C9;
    --color-cyan-dark-bg: #35C5D5;
    --color-paper: #FAFAF8;
    --color-near-white: #F5F6F8;

    /* Typography */
    --font-display: 'Space Grotesk', sans-serif;
    --font-body: 'Inter', sans-serif;

    /* Spacing scale */
    --space-xs: 0.5rem;
    --space-sm: 1rem;
    --space-md: 2rem;
    --space-lg: 4rem;
    --space-xl: 8rem;

    /* Layout */
    --max-width: 1200px;
}

/* ---------- Base ---------- */
/* Splash Screen */
.splash {
    position: fixed;
    inset: 0;
    background-color: var(--color-paper);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    transition: opacity 0.6s ease, transform 0.6s ease;
    cursor: pointer;
}

.splash-logo {
    width: clamp(1000px, 35vw, 1200px);
    height: auto;
}

.splash.hide {
    opacity: 0;
    transform: scale(0.96);
    pointer-events: none;
}

@media (prefers-reduced-motion: reduce) {
    .splash { transition: opacity 0.15s linear; }
    .splash.hide { transform: none; }
}

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

.nav-toggle span {
    width: 24px;
    height: 2px;
    background-color: var(--color-ink-navy);
}

@media (max-width: 768px) {
    .nav-toggle {
        display: flex;
    }

    .main-nav {
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background-color: var(--color-paper);
        border-bottom: 1px solid var(--color-light-slate);
        max-height: 0;
        overflow: hidden;
        transition: max-height 0.3s ease;
    }

    .main-nav.open {
        max-height: 300px;
    }

    .main-nav ul {
        flex-direction: column;
        gap: 0;
        padding: var(--space-sm) var(--space-md);
    }

    .main-nav li {
        border-bottom: 1px solid var(--color-near-white);
    }

    .main-nav a {
        display: block;
        padding: var(--space-sm) 0;
    }

    .services-grid {
        grid-template-columns: 1fr;
    }
}

body {
    font-family: var(--font-body);
    color: var(--color-ink-navy);
    background-color: var(--color-paper);
    line-height: 1.6;
}

h1, h2, h3 {
    font-family: var(--font-display);
    line-height: 1.2;
}

.site-header {
    background-color: var(--color-paper);
    border-bottom: 1px solid var(--color-light-slate);
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-inner {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0.85rem var(--space-md);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    height: 120px;
    width: auto;
}

.main-nav ul {
    display: flex;
    gap: var(--space-md);
}

.main-nav a {
    font-family: var(--font-display);
    font-size: 0.85rem;
    font-weight: 500;
    letter-spacing: 0.03em;
    text-transform: uppercase;
    color: var(--color-slate);
    transition: color 0.2s ease;
}

.main-nav a:hover {
    color: var(--color-cyan);
}

/* Hero Section */
#hero {
    padding: var(--space-xl) var(--space-md);
    background-color: var(--color-paper);
}

.hero-inner {
    max-width: var(--max-width);
    margin: 0 auto;
    max-width: 640px;
}

.eyebrow {
    font-family: var(--font-display);
    font-size: 0.85rem;
    font-weight: 600;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--color-cyan);
    margin-bottom: var(--space-xs);
}

#hero h1 {
    font-size: clamp(2.25rem, 5vw, 3.5rem);
    font-weight: 600;
    margin-bottom: var(--space-sm);
}

.hero-subtext {
    font-size: 1.15rem;
    color: var(--color-slate);
    margin-bottom: var(--space-md);
    max-width: 55ch;
}

.btn-primary {
    display: inline-block;
    font-family: var(--font-display);
    font-weight: 600;
    background-color: var(--color-ink-navy);
    color: var(--color-paper);
    padding: var(--space-xs) var(--space-md);
    border-radius: 4px;
    transition: background-color 0.2s ease;
}

.btn-primary:hover {
    background-color: var(--color-cyan);
    color: var(--color-ink-navy);
}

/* Services Section */
.section-inner {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: var(--space-xl) var(--space-md);
}

#services h2 {
    font-size: 2rem;
    font-weight: 600;
    margin-bottom: var(--space-lg);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-md);
}

.service-card {
    padding: var(--space-md);
    border: 1px solid var(--color-light-slate);
    border-radius: 8px;
    transition: border-color 0.2s ease;
}

.service-card:hover {
    border-color: var(--color-cyan);
}

.service-card h3 {
    font-size: 1.15rem;
    margin-bottom: var(--space-xs);
}

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

/* About Section */
.about-inner {
    max-width: 720px;
}

#about h2 {
    font-size: 2rem;
    font-weight: 600;
    margin-bottom: var(--space-md);
}

.about-text p {
    color: var(--color-slate);
    margin-bottom: var(--space-sm);
    font-size: 1.05rem;
}

.about-text p:last-child {
    margin-bottom: 0;
}

/* Portfolio Section */
.portfolio-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
}

.case-study {
    padding: var(--space-md);
    border-left: 3px solid var(--color-cyan);
    background-color: var(--color-near-white);
    border-radius: 4px;
}

.case-study-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--space-xs);
    margin-bottom: var(--space-xs);
}

.case-study-header h3 {
    font-size: 1.15rem;
}

.case-study-tags {
    display: flex;
    gap: var(--space-xs);
}

.case-study-tags span {
    font-size: 0.75rem;
    font-weight: 500;
    color: var(--color-slate);
    background-color: var(--color-paper);
    border: 1px solid var(--color-light-slate);
    padding: 2px 8px;
    border-radius: 12px;
}

.case-study p {
    color: var(--color-slate);
    font-size: 0.95rem;
}

/* Contact Section */
.contact-inner {
    max-width: 560px;
}

#contact h2 {
    font-size: 2rem;
    font-weight: 600;
    margin-bottom: var(--space-xs);
}

.contact-intro {
    color: var(--color-slate);
    margin-bottom: var(--space-md);
}

.form-group {
    margin-bottom: var(--space-sm);
}

.form-group label {
    display: block;
    font-size: 0.9rem;
    font-weight: 500;
    margin-bottom: var(--space-xs);
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: var(--space-xs);
    border: 1px solid var(--color-light-slate);
    border-radius: 4px;
    font-family: var(--font-body);
    font-size: 1rem;
    color: var(--color-ink-navy);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--color-cyan);
}

.contact-form button {
    border: none;
    cursor: pointer;
    font-size: 1rem;
}

.contact-fallback {
    margin-top: var(--space-md);
    font-size: 0.9rem;
    color: var(--color-slate);
}
/* Footer */
.site-footer {
    background-color: var(--color-deep-navy);
    color: var(--color-light-slate);
    padding: var(--space-md);
}

.footer-inner {
    max-width: var(--max-width);
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--space-xs);
    font-size: 0.85rem;
}

.footer-inner a {
    color: var(--color-light-slate);
}