/* ============================================
   Harry Sharman — harrysharman.com
   Clean, minimal personal site
   ============================================ */

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

:root {
    --color-bg: #fafaf9;
    --color-surface: #ffffff;
    --color-surface-alt: #f5f4f1;
    --color-text: #1a1a1a;
    --color-text-secondary: #6b6b6b;
    --color-text-light: #999999;
    --color-accent: #2563eb;
    --color-accent-hover: #1d4ed8;
    --color-border: #e5e5e3;
    --color-border-light: #f0efed;
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-serif: 'Newsreader', Georgia, 'Times New Roman', serif;
    --max-width: 1100px;
    --max-width-narrow: 720px;
    --space-xs: 0.5rem;
    --space-sm: 1rem;
    --space-md: 2rem;
    --space-lg: 4rem;
    --space-xl: 6rem;
    --transition: 0.2s ease;
}

html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-sans);
    font-size: 16px;
    line-height: 1.7;
    color: var(--color-text);
    background: var(--color-bg);
}

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

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

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

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

.container-narrow {
    max-width: var(--max-width-narrow);
}

/* --- Navigation --- */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    background: rgba(250, 250, 249, 0.92);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--color-border-light);
}

.nav-inner {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 var(--space-md);
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 64px;
}

.nav-logo {
    font-weight: 600;
    font-size: 1.1rem;
    color: var(--color-text);
    letter-spacing: -0.02em;
}

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

.nav-links {
    display: flex;
    list-style: none;
    gap: var(--space-md);
}

.nav-links a {
    color: var(--color-text-secondary);
    font-size: 0.9rem;
    font-weight: 400;
    transition: color var(--transition);
}

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

.nav-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
    flex-direction: column;
    gap: 5px;
}

.nav-toggle span {
    display: block;
    width: 22px;
    height: 2px;
    background: var(--color-text);
    transition: all var(--transition);
}

/* --- Hero --- */
.hero {
    padding: calc(64px + var(--space-xl)) 0 var(--space-xl);
    text-align: center;
}

.hero-label {
    font-size: 0.85rem;
    color: var(--color-text-light);
    letter-spacing: 0.08em;
    text-transform: uppercase;
    margin-bottom: var(--space-sm);
}

.hero-title {
    font-family: var(--font-serif);
    font-size: clamp(2.8rem, 6vw, 4.5rem);
    font-weight: 500;
    letter-spacing: -0.03em;
    line-height: 1.1;
    margin-bottom: var(--space-md);
}

.hero-subtitle {
    font-size: 1.15rem;
    color: var(--color-text-secondary);
    max-width: 600px;
    margin: 0 auto var(--space-lg);
    line-height: 1.7;
}

.hero-cta {
    display: flex;
    gap: var(--space-sm);
    justify-content: center;
    flex-wrap: wrap;
}

/* --- Buttons --- */
.btn {
    display: inline-block;
    padding: 0.75rem 1.75rem;
    border-radius: 6px;
    font-size: 0.9rem;
    font-weight: 500;
    transition: all var(--transition);
    cursor: pointer;
    border: none;
}

.btn-primary {
    background: var(--color-text);
    color: var(--color-bg);
}

.btn-primary:hover {
    background: #333;
    color: var(--color-bg);
}

.btn-secondary {
    background: transparent;
    color: var(--color-text);
    border: 1px solid var(--color-border);
}

.btn-secondary:hover {
    border-color: var(--color-text);
    color: var(--color-text);
}

/* --- Sections --- */
.section {
    padding: var(--space-xl) 0;
}

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

.section-title {
    font-family: var(--font-serif);
    font-size: 2rem;
    font-weight: 500;
    letter-spacing: -0.02em;
    margin-bottom: var(--space-md);
}

.section-header {
    display: flex;
    align-items: baseline;
    justify-content: space-between;
    margin-bottom: var(--space-md);
    flex-wrap: wrap;
    gap: var(--space-sm);
}

.section-link {
    font-size: 0.9rem;
    color: var(--color-text-secondary);
}

.section-link:hover {
    color: var(--color-accent);
}

.section-intro {
    color: var(--color-text-secondary);
    max-width: 600px;
    margin-bottom: var(--space-lg);
}

/* --- Page Header (Blog, etc.) --- */
.page-header {
    padding: calc(64px + var(--space-lg)) 0 var(--space-lg);
    text-align: center;
}

.page-title {
    font-family: var(--font-serif);
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 500;
    letter-spacing: -0.02em;
    margin-bottom: var(--space-sm);
}

.page-subtitle {
    color: var(--color-text-secondary);
    max-width: 550px;
    margin: 0 auto;
}

/* --- About --- */
.about-grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr;
    gap: var(--space-lg);
    align-items: start;
}

.about-text .lead {
    font-size: 1.1rem;
    font-weight: 400;
    line-height: 1.8;
    margin-bottom: var(--space-md);
}

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

.about-aside {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.about-card {
    padding: var(--space-md);
    background: var(--color-surface-alt);
    border-radius: 8px;
}

.about-card h3 {
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--color-text-light);
    margin-bottom: var(--space-xs);
}

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

/* --- Blog Posts Grid (featured on home) --- */
.posts-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-md);
}

.post-card {
    background: var(--color-surface);
    border-radius: 8px;
    padding: var(--space-md);
    transition: box-shadow var(--transition);
    border: 1px solid var(--color-border-light);
    display: flex;
    flex-direction: column;
}

.post-card:hover {
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
}

.post-card-date {
    font-size: 0.8rem;
    color: var(--color-text-light);
    margin-bottom: var(--space-xs);
}

.post-card-title {
    font-family: var(--font-serif);
    font-size: 1.2rem;
    font-weight: 500;
    line-height: 1.4;
    margin-bottom: var(--space-xs);
    flex-grow: 1;
}

.post-card-title a {
    color: var(--color-text);
}

.post-card-title a:hover {
    color: var(--color-accent);
}

.post-card-excerpt {
    font-size: 0.9rem;
    color: var(--color-text-secondary);
    line-height: 1.6;
}

.post-card-tags {
    display: flex;
    gap: 0.4rem;
    flex-wrap: wrap;
    margin-top: var(--space-sm);
}

.tag {
    font-size: 0.75rem;
    color: var(--color-text-light);
    background: var(--color-surface-alt);
    padding: 0.2rem 0.6rem;
    border-radius: 3px;
}

/* --- Blog List (blog page) --- */
.blog-list {
    max-width: var(--max-width-narrow);
    margin: 0 auto;
}

.blog-list-item {
    padding: var(--space-md) 0;
    border-bottom: 1px solid var(--color-border-light);
    display: flex;
    gap: var(--space-md);
    align-items: baseline;
}

.blog-list-item:first-child {
    padding-top: 0;
}

.blog-list-date {
    font-size: 0.85rem;
    color: var(--color-text-light);
    min-width: 100px;
    flex-shrink: 0;
}

.blog-list-content {
    flex: 1;
}

.blog-list-title {
    font-family: var(--font-serif);
    font-size: 1.15rem;
    font-weight: 500;
    margin-bottom: 0.25rem;
}

.blog-list-title a {
    color: var(--color-text);
}

.blog-list-title a:hover {
    color: var(--color-accent);
}

.blog-list-excerpt {
    font-size: 0.9rem;
    color: var(--color-text-secondary);
}

/* --- Blog Filters --- */
.blog-filters {
    display: flex;
    gap: 0.5rem;
    justify-content: center;
    flex-wrap: wrap;
    margin-top: var(--space-md);
}

.filter-btn {
    background: none;
    border: 1px solid var(--color-border);
    padding: 0.4rem 1rem;
    border-radius: 20px;
    font-size: 0.85rem;
    color: var(--color-text-secondary);
    cursor: pointer;
    transition: all var(--transition);
    font-family: var(--font-sans);
}

.filter-btn:hover,
.filter-btn.active {
    background: var(--color-text);
    color: var(--color-bg);
    border-color: var(--color-text);
}

/* --- Post (single article) --- */
.post {
    padding: calc(64px + var(--space-lg)) 0 var(--space-xl);
}

.back-link {
    display: inline-block;
    font-size: 0.9rem;
    color: var(--color-text-secondary);
    margin-bottom: var(--space-lg);
}

.back-link:hover {
    color: var(--color-accent);
}

.post-header {
    margin-bottom: var(--space-lg);
}

.post-header h1 {
    font-family: var(--font-serif);
    font-size: clamp(1.8rem, 4vw, 2.5rem);
    font-weight: 500;
    letter-spacing: -0.02em;
    line-height: 1.25;
    margin-bottom: var(--space-sm);
}

.post-meta {
    font-size: 0.9rem;
    color: var(--color-text-light);
}

.post-body {
    font-family: var(--font-serif);
    font-size: 1.1rem;
    line-height: 1.85;
}

.post-body h2 {
    font-family: var(--font-serif);
    font-size: 1.5rem;
    font-weight: 500;
    margin: var(--space-lg) 0 var(--space-sm);
}

.post-body h3 {
    font-family: var(--font-serif);
    font-size: 1.2rem;
    font-weight: 500;
    margin: var(--space-md) 0 var(--space-xs);
}

.post-body p {
    margin-bottom: var(--space-md);
    color: var(--color-text-secondary);
}

.post-body blockquote {
    border-left: 3px solid var(--color-accent);
    padding-left: var(--space-md);
    margin: var(--space-md) 0;
    font-style: italic;
    color: var(--color-text-secondary);
}

.post-body ul, .post-body ol {
    margin-bottom: var(--space-md);
    padding-left: var(--space-md);
}

.post-body li {
    margin-bottom: var(--space-xs);
    color: var(--color-text-secondary);
}

.post-body code {
    background: var(--color-surface-alt);
    padding: 0.15em 0.4em;
    border-radius: 3px;
    font-size: 0.9em;
}

.post-body pre {
    background: var(--color-text);
    color: var(--color-bg);
    padding: var(--space-md);
    border-radius: 8px;
    overflow-x: auto;
    margin-bottom: var(--space-md);
}

.post-body pre code {
    background: none;
    padding: 0;
    color: inherit;
}

.post-body img {
    border-radius: 8px;
    margin: var(--space-md) 0;
}

/* --- Projects Grid --- */
.projects-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-md);
}

.project-card {
    background: var(--color-surface-alt);
    border-radius: 8px;
    padding: var(--space-md);
    transition: all var(--transition);
    border: 1px solid transparent;
}

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

.project-card-label {
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--color-accent);
    margin-bottom: var(--space-xs);
}

.project-card h3 {
    font-family: var(--font-serif);
    font-size: 1.2rem;
    font-weight: 500;
    margin-bottom: var(--space-xs);
}

.project-card p {
    font-size: 0.9rem;
    color: var(--color-text-secondary);
    margin-bottom: var(--space-sm);
}

.project-card-link {
    font-size: 0.85rem;
    font-weight: 500;
}

/* --- Case Studies --- */
.cases-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-md);
}

.case-card {
    background: var(--color-surface);
    border-radius: 8px;
    padding: var(--space-md);
    border: 1px solid var(--color-border-light);
    transition: all var(--transition);
}

.case-card:hover {
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
}

.case-card-category {
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--color-text-light);
    margin-bottom: var(--space-xs);
}

.case-card h3 {
    font-family: var(--font-serif);
    font-size: 1.15rem;
    font-weight: 500;
    margin-bottom: var(--space-xs);
}

.case-card p {
    font-size: 0.9rem;
    color: var(--color-text-secondary);
    margin-bottom: var(--space-sm);
}

.case-card-result {
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--color-accent);
}

/* --- CV Timeline --- */
.cv-timeline {
    max-width: var(--max-width-narrow);
}

.cv-entry {
    display: grid;
    grid-template-columns: 140px 1fr;
    gap: var(--space-md);
    padding: var(--space-md) 0;
    border-bottom: 1px solid var(--color-border-light);
}

.cv-entry:first-child {
    padding-top: 0;
}

.cv-entry:last-child {
    border-bottom: none;
}

.cv-date {
    font-size: 0.85rem;
    color: var(--color-text-light);
    padding-top: 0.15rem;
}

.cv-content h3 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 0.15rem;
}

.cv-content .cv-company {
    font-size: 0.9rem;
    color: var(--color-accent);
    margin-bottom: var(--space-xs);
}

.cv-content p {
    font-size: 0.9rem;
    color: var(--color-text-secondary);
}

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

.testimonial-card {
    background: var(--color-surface);
    border-radius: 8px;
    padding: var(--space-md);
    border: 1px solid var(--color-border-light);
}

.testimonial-card blockquote {
    font-family: var(--font-serif);
    font-size: 1.05rem;
    font-style: italic;
    color: var(--color-text-secondary);
    line-height: 1.7;
    margin-bottom: var(--space-sm);
}

.testimonial-author {
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--color-text);
}

.testimonial-role {
    font-size: 0.8rem;
    color: var(--color-text-light);
}

/* --- Contact --- */
.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-lg);
    align-items: start;
}

.contact-text .lead {
    font-size: 1.1rem;
    line-height: 1.7;
    color: var(--color-text-secondary);
}

.contact-links {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.contact-item {
    display: block;
    padding: var(--space-md);
    background: var(--color-surface-alt);
    border-radius: 8px;
    transition: all var(--transition);
    border: 1px solid transparent;
}

.contact-item:hover {
    border-color: var(--color-border);
}

.contact-label {
    display: block;
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--color-text-light);
    margin-bottom: 0.25rem;
}

.contact-value {
    display: block;
    color: var(--color-text);
    font-weight: 500;
}

/* --- Footer --- */
.footer {
    padding: var(--space-md) 0;
    border-top: 1px solid var(--color-border-light);
    text-align: center;
}

.footer p {
    font-size: 0.85rem;
    color: var(--color-text-light);
}

.footer a {
    color: var(--color-text-secondary);
}

/* --- Responsive --- */
@media (max-width: 768px) {
    :root {
        --space-xl: 4rem;
        --space-lg: 2.5rem;
    }

    .nav-toggle {
        display: flex;
    }

    .nav-links {
        display: none;
        position: absolute;
        top: 64px;
        left: 0;
        right: 0;
        background: var(--color-bg);
        flex-direction: column;
        padding: var(--space-md);
        border-bottom: 1px solid var(--color-border);
        gap: var(--space-sm);
    }

    .nav-links.open {
        display: flex;
    }

    .about-grid,
    .contact-grid {
        grid-template-columns: 1fr;
    }

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

    .projects-grid,
    .cases-grid,
    .testimonials-grid {
        grid-template-columns: 1fr;
    }

    .blog-list-item {
        flex-direction: column;
        gap: 0.25rem;
    }

    .blog-list-date {
        min-width: auto;
    }

    .cv-entry {
        grid-template-columns: 1fr;
        gap: 0.25rem;
    }

    .hero-subtitle {
        font-size: 1.05rem;
    }
}

@media (max-width: 480px) {
    .hero-cta {
        flex-direction: column;
        align-items: center;
    }

    .btn {
        width: 100%;
        text-align: center;
    }
}

/* --- Loading state --- */
.loading {
    text-align: center;
    padding: var(--space-lg);
    color: var(--color-text-light);
}

/* --- Empty state --- */
.empty-state {
    text-align: center;
    padding: var(--space-lg);
    color: var(--color-text-light);
    font-style: italic;
}