/* Font faces */
@font-face {
  font-family: 'Inter';
  font-style: normal;
  font-weight: 500;
  font-display: optional;
  src: url('assets/fonts/inter-500.woff') format('woff');
}

@font-face {
  font-family: 'Source Serif 4';
  font-style: normal;
  font-weight: 300 600;
  font-display: optional;
  src: url('assets/fonts/source-serif-4.woff2') format('woff2');
}

body {
  --font-serif: 'Source Serif 4', serif;
  --font-sans: 'Inter', sans-serif;

  --color-primary: #072628;
  --color-dark: #011315;
  --color-white: #FDFEFE;

  --vertical-padding-mobile: 2rem;
  --vertical-padding-desktop: 4rem;

  --horizontal-padding-mobile: 1rem;
  --horizontal-padding-desktop: 0;
}

body {
    background-color: var(--color-white);
    font-family: var(--font-serif);
    color: var(--color-dark);
    padding: 0;
    margin: 0;
}

h1, h2, h3, h4, h5, h6 {
    font-weight: 300;
    line-height: 1.1;
    margin: 0 0 12px;
}

p {
    font-size: 1.4rem;
    font-weight: 300;
    line-height: 1.5;
    margin: 0 0 24px;
}

a {
    color: var(--color-dark);
    border-bottom: 2px solid transparent;
    text-decoration: none;
}

a:hover {
    color: var(--color-primary);
    border-bottom: 2px solid var(--color-primary);
}

ul li, ol li {
    font-size: 1rem;
    font-weight: 300;
    line-height: 1.5;
    margin: 0 0 8px;
}

button {
    background: none;
    border: none;
    padding: 0;
    margin: 0;
    cursor: pointer;
}

.visually-hidden {
    position: absolute;
    width: 1px;
    height: 1px;
    margin: -1px;
    border: 0;
}

.visually-hidden:not(:focus):not(:active) {
    clip: rect(0 0 0 0);
    clip-path: inset(50%);
    height: 1px;
    overflow: hidden;
}

/**
 * Header
 */
header {
    max-width: 1440px;
    margin: 0 auto;
    padding: 1rem;
    position: relative;
    z-index: 102;
}

.menu-toggle {
    display: block;
    position: absolute;
    top: 1rem;
    right: 1rem;
    z-index: 101;
    padding: 1rem;
    /* Increase clickable area */
    min-width: 44px;
    min-height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.menu-toggle__icon {
    width: 24px;
    height: 2px;
    background-color: var(--color-dark);
    position: relative;
    display: block;
    transition: background-color 0.3s ease;
}

.menu-toggle__icon::before,
.menu-toggle__icon::after {
    content: '';
    display: block;
    background-color: var(--color-dark);
    position: absolute;
    left: 0;
    width: 24px;
    height: 2px;
    transition: transform 0.3s ease, top 0.3s ease;
}

.menu-toggle__icon::before {
    top: -8px;
}

.menu-toggle__icon::after {
    top: 8px;
}

/* Active state - transform to X */
.menu-toggle[aria-expanded="true"] .menu-toggle__icon {
    background-color: transparent;
}

.menu-toggle[aria-expanded="true"] .menu-toggle__icon::before,
.menu-toggle[aria-expanded="true"] .menu-toggle__icon::after {
    background-color: var(--color-white);
}

.menu-toggle[aria-expanded="true"] .menu-toggle__icon::before {
    top: 0;
    transform: rotate(45deg);
}

.menu-toggle[aria-expanded="true"] .menu-toggle__icon::after {
    top: 0;
    transform: rotate(-45deg);
}


nav ul li a,
.eyebrow {
    font-family: var(--font-sans);
    font-size: .9rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    text-decoration: none;
}

nav {
    position: fixed;
    top: 0;
    bottom: 0;
    left: 0;
    right: 0;
    background-color: var(--color-dark);
    z-index: 100;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s ease, visibility 0.3s ease;
}

nav[aria-expanded="true"] {
    opacity: 1;
    visibility: visible;
}

nav ul {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    height: 100%;
    gap: 2rem;
}

nav ul li {
    margin: 0;
}

nav ul li a {
    color: var(--color-white);
    -webkit-font-smoothing: antialiased;
    font-size: 1.4rem;
    border-bottom: 2px solid transparent;
    transition: border-color 0.2s ease;
}

nav ul li a:hover {
    color: var(--color-white);
    border-bottom-color: var(--color-white);
}

.section-container,
.hero-container {
    max-width: 1140px;
    margin: 0 auto;
    padding: 0 1rem;
}

/**
 * Hero
 */

.hero {
    margin-top: 2rem;
    padding: var(--vertical-padding-mobile) var(--horizontal-padding-mobile);
}

.hero .hero__feature {
    font-size: 2rem;
    font-weight: 600;
    line-height: 1.1;
}

.hero .hero__description {
    border-left: 1px solid var(--color-dark);
    padding-left: 1rem;
}

/**
 * Content Sections
 */

.content-section {
    padding: var(--vertical-padding-mobile) var(--horizontal-padding-mobile);
}

.section-container {
    border-bottom: 1px solid var(--color-primary);
}

.content-section:last-child .section-container {
    border-bottom: none;
}

.content-section--about {
    background-color: var(--color-primary);
    color: var(--color-white);
    -webkit-font-smoothing: antialiased;
}

.social-links {
    margin-bottom: 20px;
}

.headshot {
    border-radius: 50%;
    max-width: 140px;
    margin-bottom: 24px;
    height: auto;
}

footer p {
    font-size: 1rem;
    font-weight: 300;
    line-height: 1;
    text-align: center;
}

@media screen and (min-width: 768px) {

    p {
        font-size: 1.8rem;
    }

    header {
        display: flex;
        justify-content: space-between;
        align-items: center;
    }

    .menu-toggle {
        display: none;
    }
    
    nav {
        position: static;
        opacity: 1;
        visibility: visible;
        background-color: transparent;
    }

    nav ul {
        display: flex;
        flex-direction: row;
        gap: 1rem;
        height: auto;
    }

    nav ul li a {
        color: var(--color-dark);
        font-size: .9rem;
    }

    nav ul li a:hover {
        color: var(--color-primary);
        border-bottom-color: var(--color-primary);
    }

    /**
     * Hero
     */

    .hero {
        margin-top: 6rem;
        padding: var(--vertical-padding-desktop) var(--horizontal-padding-desktop);
    }

    .hero .hero__feature {
        font-size: 4.4rem;
    }

    .hero .hero__description {
        display: block;
        padding-left: 3rem;
        margin: 4.4rem 0 4.4rem 4.4rem;
    }

    /**
     * Content Sections
     */
    .section-container {
        padding: var(--vertical-padding-desktop) var(--horizontal-padding-desktop);
        display: grid;
        grid-template-columns: 1fr 2fr;
        gap: 2rem;
    }

    .services-list {
        display: flex;
        flex-direction: column;
        flex-wrap: wrap;
        height: 360px;
    }

    .services-list li {
        width: 46%;
    }

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

/**
 * Project Cards
 */

.project-cards {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2rem;
}

.project-card {
    border: 1px solid var(--color-primary);
    padding: 1.5rem;
    transition: box-shadow 0.2s ease;
}

.project-card:hover {
    box-shadow: 0 4px 12px rgba(7, 38, 40, 0.1);
}

.project-card__title {
    font-size: 1.4rem;
    font-weight: 600;
    margin-bottom: 0.75rem;
    color: var(--color-dark);
}

.project-card__description {
    font-size: 1.1rem;
    margin-bottom: 0;
}