/* ============================================
   Grace Duffy Design - Portfolio Stylesheet
   ============================================ */

/* Google Fonts loaded in HTML:
   - Bodoni Moda SC (display)
   - Nunito (body)
*/

/* --- CSS Custom Properties --- */
:root {
    --color-bg: #ffffff;
    --color-text: #1a1a1a;
    --color-accent: #0099ff;
    --color-accent-hover: #006bb3;
    --color-divider: #e8e8e8;
    --color-subtle-bg: #f5f5f5;
    --color-overlay: rgba(0, 0, 0, 0.6);

    --font-display: 'Bodoni Moda SC', 'Georgia', serif;
    --font-body: 'Nunito', 'Helvetica Neue', sans-serif;
    --font-ui: 'Inter', 'Helvetica Neue', sans-serif;

    --max-width: 1200px;
    --nav-height: 72px;
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 4rem;
    --spacing-xl: 6rem;
}

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

html {
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
}

body {
    font-family: var(--font-body);
    font-size: 16px;
    line-height: 1.6;
    color: var(--color-text);
    background-color: var(--color-bg);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

a {
    color: var(--color-accent);
    text-decoration: none;
    transition: color 0.2s ease;
}

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

/* --- Typography --- */
h1, h2, h3, h4 {
    font-family: var(--font-display);
    font-weight: 400;
    line-height: 1.2;
    letter-spacing: 0.02em;
    font-optical-sizing: none;
}

h1 {
    font-size: 3rem;
}

h2 {
    font-size: 2rem;
    margin-bottom: var(--spacing-md);
}

h3 {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-sm);
}

p {
    margin-bottom: var(--spacing-sm);
}

.label {
    font-family: var(--font-ui);
    font-size: 0.75rem;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: #666;
}

/* --- Layout --- */
.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

.section {
    padding: var(--spacing-xl) 0;
}

.section + .section {
    border-top: 1px solid var(--color-divider);
}

/* --- Header & Navigation --- */
.site-header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: var(--color-bg);
    border-bottom: 1px solid var(--color-divider);
    height: var(--nav-height);
}

.nav-container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 var(--spacing-md);
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 100%;
}

.site-logo {
    font-family: var(--font-display);
    font-size: 1.25rem;
    color: var(--color-text);
    letter-spacing: 0.05em;
    white-space: nowrap;
    font-optical-sizing: none;
}

.site-logo:hover {
    color: var(--color-accent);
}

.nav-links {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    list-style: none;
}

.nav-links a {
    font-family: var(--font-ui);
    font-size: 0.75rem;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--color-text);
    padding: 0.25rem 0;
    border-bottom: 2px solid transparent;
    transition: color 0.2s ease, border-color 0.2s ease;
}

.nav-links a:hover,
.nav-links a.active {
    color: var(--color-accent);
    border-bottom-color: var(--color-accent);
}

/* Hamburger Menu */
.hamburger {
    display: none;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    width: 28px;
    height: 28px;
    cursor: pointer;
    background: none;
    border: none;
    padding: 0;
    z-index: 200;
}

.hamburger span {
    display: block;
    width: 100%;
    height: 2px;
    background: var(--color-text);
    transition: transform 0.3s ease, opacity 0.3s ease;
}

.hamburger.open span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
}

.hamburger.open span:nth-child(2) {
    opacity: 0;
}

.hamburger.open span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
}

/* Mobile Menu Overlay */
.mobile-menu {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--color-bg);
    z-index: 150;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.mobile-menu.open {
    display: flex;
    opacity: 1;
}

.mobile-menu a {
    font-family: var(--font-display);
    font-size: 1.75rem;
    color: var(--color-text);
    padding: var(--spacing-sm) 0;
    border-bottom: 2px solid transparent;
    transition: color 0.2s ease;
}

.mobile-menu a:hover,
.mobile-menu a.active {
    color: var(--color-accent);
}

.mobile-menu .project-count {
    font-family: var(--font-ui);
    font-size: 0.8rem;
    color: #999;
    margin-left: 0.5rem;
}

/* --- Hero Section --- */
.hero {
    padding: 2rem 0 var(--spacing-xl) 0;
}

.hero-heading {
    text-align: left;
    margin-bottom: var(--spacing-lg);
}

.hero-heading h1 {
    font-size: 124px;
    margin-bottom: var(--spacing-xs);
    letter-spacing: normal;
    color: #000;
    line-height: 1.2;
}

.hero-heading .tagline {
    font-family: var(--font-body);
    font-size: 28px;
    font-weight: 400;
    letter-spacing: normal;
    text-transform: none;
    color: #000;
    line-height: 1.2;
    margin-left: 12px;
}

.hero-layout {
    display: flex;
    gap: 0;
    align-items: center;
}

.hero-image-col {
    flex: 1 1 0;
    min-width: 0;
}

.hero-image {
    width: 100%;
    border-radius: 12px;
    display: block;
}

.hero-text-col {
    flex: 1 1 0;
    min-width: 0;
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding-left: 80px;
    gap: 28px;
}

.hero-text-col h2 {
    font-size: 36px;
    font-weight: 400;
    letter-spacing: normal;
    color: #000;
    line-height: 1.2;
    margin-bottom: 0;
}

.hero-text-col p {
    font-family: var(--font-body);
    font-size: 23px;
    font-weight: 400;
    letter-spacing: normal;
    color: #000;
    line-height: 1.2;
    margin-top: -14px;
}

.hero-text-col p:first-of-type {
    margin-top: 0;
}

/* --- Category Preview Sections (Homepage) --- */
.category-preview {
    padding: var(--spacing-lg) 0;
}

.category-preview + .category-preview {
    border-top: 1px solid var(--color-divider);
}

.category-header {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    margin-bottom: var(--spacing-md);
}

.category-header h2 {
    margin-bottom: 0;
}

.view-all {
    font-family: var(--font-ui);
    font-size: 0.85rem;
    letter-spacing: 0.05em;
    color: var(--color-accent);
}

.view-all:hover {
    color: var(--color-accent-hover);
}

/* --- Preview Grid: Editorial Salon Hang ---
   Images display at natural proportions within equal-width columns.
   Varying heights create an organic, gallery-wall rhythm.
   Title reveals as a clean caption bar on hover. */

.preview-grid {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-lg);
}

.preview-card {
    flex: 1 1 0;
    min-width: 0;
    position: relative;
    border-top: 2px solid var(--color-text);
    padding-top: 0.75rem;
    text-decoration: none;
    display: block;
    overflow: hidden;
}

.preview-card img {
    width: 100%;
    height: auto;
    display: block;
    transition: filter 0.4s ease, transform 0.4s ease;
}

.preview-card:hover img {
    filter: brightness(0.85);
    transform: scale(1.015);
}

/* Caption bar — overlays bottom of image, slides up on hover */
.preview-card .card-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: 0.75rem 0;
    background: var(--color-text);
    transform: translateY(100%);
    transition: transform 0.35s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    pointer-events: none;
}

.preview-card:hover .card-overlay {
    transform: translateY(0);
}

.preview-card .card-overlay h3 {
    font-family: var(--font-ui);
    font-size: 0.7rem;
    font-weight: 600;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: white;
    margin-bottom: 0;
    text-align: center;
}

/* Category-specific hint: number label before card for editorial feel */
.preview-card::before {
    content: attr(data-index);
    display: block;
    font-family: var(--font-ui);
    font-size: 0.65rem;
    letter-spacing: 0.1em;
    color: #bbb;
    margin-bottom: 0.5rem;
}

/* Two-card grids: cards take more space, centered feel */
.preview-grid--two {
    max-width: 850px;
    margin-left: auto;
    margin-right: auto;
}

/* --- About Section --- */
.about-section {
    max-width: 800px;
}

.about-section p {
    font-size: 1.05rem;
    line-height: 1.8;
}

/* --- Skills Grid --- */
.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: var(--spacing-sm);
}

.skill-tag {
    background: var(--color-subtle-bg);
    padding: 0.75rem var(--spacing-sm);
    border-radius: 4px;
    font-family: var(--font-ui);
    font-size: 0.85rem;
    text-align: center;
    letter-spacing: 0.03em;
}

/* --- Contact Section --- */
.contact-section {
    text-align: center;
}

.contact-email {
    font-size: 1.25rem;
    font-family: var(--font-ui);
    display: block;
    margin-bottom: var(--spacing-md);
}

.social-links {
    display: flex;
    justify-content: center;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
    margin-top: var(--spacing-sm);
}

.social-link {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    font-family: var(--font-ui);
    font-size: 0.85rem;
    letter-spacing: 0.05em;
    color: var(--color-text);
    background: var(--color-subtle-bg);
    padding: 0.6rem 1.25rem;
    border-radius: 50px;
    transition: background 0.2s ease, color 0.2s ease;
}

.social-link:hover {
    background: var(--color-accent);
    color: white;
}

.social-link svg {
    width: 18px;
    height: 18px;
    fill: currentColor;
}

/* --- Category Landing Pages --- */
.category-landing {
    padding-top: var(--spacing-md);
}

.category-landing h1 {
    font-size: 2.5rem;
    margin-bottom: var(--spacing-md);
    text-align: left;
    padding-bottom: var(--spacing-sm);
    border-bottom: 1px solid var(--color-divider);
}

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

.project-card {
    position: relative;
    overflow: hidden;
    border-radius: 2px;
    background: var(--color-subtle-bg);
    cursor: pointer;
}

.project-card img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    transition: transform 0.4s ease;
}

.project-card:hover img {
    transform: scale(1.03);
}

.project-card .card-overlay {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(0, 0, 0, 0.5);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.project-card:hover .card-overlay {
    opacity: 1;
}

.project-card .card-overlay h3 {
    color: white;
    font-size: 1.25rem;
    text-align: center;
    padding: var(--spacing-sm);
}

/* --- Breadcrumbs --- */
.breadcrumb {
    font-family: var(--font-ui);
    font-size: 0.75rem;
    letter-spacing: 0.04em;
    color: #999;
    padding: var(--spacing-sm) 0 var(--spacing-xs);
    margin-bottom: var(--spacing-sm);
    text-align: left;
}

.breadcrumb a {
    color: #999;
}

.breadcrumb a:hover {
    color: var(--color-accent);
}

.breadcrumb .separator {
    margin: 0 0.5rem;
    color: #ccc;
}

/* --- Project Pages --- */
.project-page {
    padding-top: var(--spacing-sm);
    padding-bottom: var(--spacing-lg);
}

.project-page h1 {
    font-size: 2.25rem;
    margin-bottom: var(--spacing-md);
    text-align: left;
    padding-bottom: var(--spacing-sm);
    border-bottom: 1px solid var(--color-divider);
}

.project-description {
    max-width: 720px;
    margin: 0 0 var(--spacing-lg);
    padding-left: var(--spacing-md);
    border-left: 2px solid var(--color-divider);
}

.project-description h3 {
    font-family: var(--font-display);
    margin-top: var(--spacing-md);
}

.project-description p {
    line-height: 1.8;
}

.project-gallery {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-md);
}

.project-gallery img {
    max-width: 100%;
    border-radius: 2px;
    transition: box-shadow 0.3s ease;
}

.project-gallery img:hover {
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
}

.project-gallery .gallery-pair {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    width: 100%;
}

.project-gallery .gallery-pair img {
    flex: 1 1 0;
    min-width: 0;
}

.project-gallery .gallery-triple {
    display: flex;
    gap: 4px;
    width: 100%;
}

.project-gallery .gallery-triple img {
    width: 33.33%;
    height: auto;
    object-fit: cover;
    display: block;
    flex: 1 1 0;
    min-width: 0;
}

/* --- Prev/Next Navigation --- */
.project-nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-lg) 0 var(--spacing-md);
    border-top: 1px solid var(--color-divider);
    margin-top: var(--spacing-xl);
}

.project-nav a {
    font-family: var(--font-ui);
    font-size: 0.8rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--color-text);
    display: flex;
    align-items: center;
    gap: 0.5rem;
    transition: color 0.2s ease, transform 0.2s ease;
}

.project-nav a:hover {
    color: var(--color-accent);
}

.project-nav .next:hover {
    transform: translateX(4px);
}

.project-nav .prev:hover {
    transform: translateX(-4px);
}

.project-nav .prev::before {
    content: '\2190';
}

.project-nav .next::after {
    content: '\2192';
}

.project-nav .placeholder {
    visibility: hidden;
}

/* --- Back to Category Button --- */
.back-to-category {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    backdrop-filter: blur(8px);
    background: rgba(26, 26, 26, 0.9);
    color: white;
    font-family: var(--font-ui);
    font-size: 0.75rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    padding: 0.6rem 1.2rem;
    border-radius: 50px;
    opacity: 0;
    transform: translateY(10px);
    transition: opacity 0.3s ease, transform 0.3s ease, background 0.2s ease;
    z-index: 50;
    pointer-events: none;
    text-decoration: none;
}

.back-to-category.visible {
    opacity: 1;
    transform: translateY(0);
    pointer-events: auto;
}

.back-to-category:hover {
    background: var(--color-accent);
    color: white;
}

/* --- Resume Page --- */
.resume-page {
    text-align: center;
    padding-top: var(--spacing-sm);
}

.resume-page h1 {
    font-size: 2.5rem;
    margin-bottom: var(--spacing-md);
}

.resume-download {
    display: inline-block;
    background: var(--color-text);
    color: white;
    font-family: var(--font-ui);
    font-size: 0.8rem;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    padding: 0.75rem 2.5rem;
    border-radius: 50px;
    margin-bottom: var(--spacing-lg);
    transition: background 0.2s ease;
}

.resume-download:hover {
    background: var(--color-accent);
    color: white;
}

.resume-images {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-md);
    max-width: 700px;
    margin: 0 auto;
}

.resume-images img {
    width: 100%;
    border: none;
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.1);
    border-radius: 4px;
}

/* --- Footer --- */
.site-footer {
    border-top: 1px solid var(--color-divider);
    padding: var(--spacing-md) 0;
    text-align: center;
    font-family: var(--font-ui);
    font-size: 0.8rem;
    color: #999;
}

/* --- Sectioned Project Layout --- */
.project-section {
    margin-bottom: var(--spacing-xl);
}

.project-section-label {
    font-family: var(--font-ui);
    font-size: 0.7rem;
    font-weight: 600;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: #999;
    margin-bottom: var(--spacing-sm);
    padding-bottom: var(--spacing-xs);
    border-bottom: 1px solid var(--color-divider);
}

.project-section-header {
    display: block;
    margin-bottom: var(--spacing-md);
}

/* --- Technical Flat Image Borders --- */
.category-technical-flats .project-gallery img {
    border: 1px solid var(--color-divider);
}

/* --- Animations --- */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in {
    animation: fadeInUp 0.6s ease forwards;
}

/* Lazy load placeholder — only on gallery images, not thumbnails */
.project-gallery img[loading="lazy"],
.resume-images img[loading="lazy"] {
    background: var(--color-subtle-bg);
}

/* --- Responsive: Tablet --- */
@media (max-width: 1024px) {
    .preview-grid {
        gap: var(--spacing-md);
    }

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

    h1 {
        font-size: 2.5rem;
    }

    .hero-heading h1 {
        font-size: 80px;
    }

    .hero-heading .tagline {
        font-size: 22px;
    }

    .hero-text-col {
        padding-left: 40px;
        gap: 32px;
    }

    .hero-text-col h2 {
        font-size: 36px;
    }

    .hero-text-col p {
        font-size: 18px;
    }
}

/* --- Responsive: Mobile --- */
@media (max-width: 768px) {
    :root {
        --nav-height: 60px;
    }

    .nav-links {
        display: none;
    }

    .hamburger {
        display: flex;
    }

    .hero-heading h1 {
        font-size: 48px;
    }

    .hero-heading .tagline {
        font-size: 18px;
    }

    .hero-text-col h2 {
        font-size: 28px;
    }

    .hero-text-col p {
        font-size: 16px;
    }

    .hero-layout {
        flex-direction: column;
        text-align: center;
    }

    .hero-text-col {
        padding-left: 0;
        align-items: center;
    }

    .preview-grid {
        flex-direction: column;
        gap: var(--spacing-md);
    }

    .preview-card {
        flex: none;
        width: 100%;
    }

    .preview-grid--two {
        max-width: 100%;
    }

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

    .preview-card .card-overlay {
        position: relative;
        transform: none;
        background: transparent;
        padding: 0.5rem 0 0;
    }

    .preview-card .card-overlay h3 {
        color: var(--color-text);
        text-align: left;
        font-size: 0.65rem;
    }

    .project-card .card-overlay {
        opacity: 1;
        background: linear-gradient(transparent 50%, rgba(0,0,0,0.6));
    }

    .project-card .card-overlay h3 {
        position: absolute;
        bottom: var(--spacing-sm);
        left: var(--spacing-sm);
        text-align: left;
        font-size: 1rem;
    }

    .category-landing h1 {
        font-size: 1.75rem;
        margin-bottom: var(--spacing-sm);
        padding-bottom: var(--spacing-xs);
    }

    .project-page h1 {
        font-size: 1.75rem;
    }

    .project-page {
        padding-bottom: var(--spacing-md);
    }

    .project-description {
        padding-left: 0;
        border-left: none;
        max-width: 100%;
    }

    .project-gallery {
        gap: var(--spacing-sm);
    }


    .project-nav {
        flex-direction: row;
        justify-content: space-between;
        gap: 0;
    }

    .project-nav a {
        padding: 0.75rem 0;
        min-height: 44px;
    }

    .breadcrumb {
        white-space: normal;
        font-size: 0.65rem;
    }

    .category-header {
        flex-direction: column;
        gap: var(--spacing-xs);
    }

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

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

    .back-to-category {
        bottom: 1rem;
        right: 1rem;
        padding: 0.75rem 1.5rem;
        font-size: 0.7rem;
    }

    .mobile-menu a {
        padding: 1.25rem 0;
        min-height: 48px;
    }

    .resume-page h1 {
        font-size: 1.75rem;
        margin-bottom: var(--spacing-sm);
    }

    .resume-download {
        width: 100%;
        text-align: center;
        padding: 0.875rem var(--spacing-md);
    }

    .resume-images {
        max-width: 100%;
        gap: var(--spacing-sm);
    }

    .container {
        padding: 0 var(--spacing-sm);
    }
}

/* --- Responsive: Small Mobile --- */
@media (max-width: 480px) {
    .hero-heading h1 {
        font-size: 36px;
    }

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

    .project-gallery .gallery-pair {
        flex-direction: column;
    }

    .project-gallery .gallery-pair img {
        flex: none;
        width: 100%;
    }

    .project-gallery .gallery-triple {
        flex-direction: column;
    }

    .project-gallery .gallery-triple img {
        flex: none;
        width: 100%;
    }
}