/* ========================================
   CSS Custom Properties
   Monochrome / broken-white / incentio-inspired
   ======================================== */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=Montserrat:wght@400;500;600;700;800&display=swap');

:root {
    /* Colors - Light */
    --color-bg: #f5f7fa;
    --color-bg-alt: #eef0f4;
    --color-surface: #ffffff;
    --color-text: #000000;
    --color-text-secondary: #333333;
    --color-text-muted: #777777;
    --color-accent: #000000;
    --color-accent-hover: #000000;
    --color-border: #ddd;
    --color-code-bg: #eeedea;
    --color-nav: #999;
    --color-nav-hover: #000;

    /* Typography */
    --font-heading: 'Montserrat', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-body: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    --font-mono: "SF Mono", "Fira Code", Menlo, Consolas, monospace;
    --font-size-base: 1rem;
    --font-size-sm: 0.875rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.35rem;
    --font-size-2xl: 2.25rem;
    --font-size-3xl: 3.5rem;
    --font-size-4xl: 4.5rem;
    --line-height: 1.7;

    /* Spacing */
    --space-xs: 0.25rem;
    --space-sm: 0.5rem;
    --space-md: 1rem;
    --space-lg: 2rem;
    --space-xl: 4rem;
    --space-2xl: 7rem;

    /* Layout */
    --container-max: 1100px;
    --container-narrow: 720px;

    /* Transitions */
    --transition: 0.2s ease;
}

[data-theme="dark"] {
    --color-bg: #111111;
    --color-bg-alt: #1a1a1a;
    --color-surface: #1e1e1e;
    --color-text: #e8e8e8;
    --color-text-secondary: #b0b0b0;
    --color-text-muted: #666;
    --color-accent: #e8e8e8;
    --color-accent-hover: #ffffff;
    --color-border: #333;
    --color-code-bg: #1a1a1a;
    --color-nav: #888;
    --color-nav-hover: #fff;
}

/* ========================================
   Reset & Base
   ======================================== */

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

html {
    font-size: 16px;
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-body);
    font-size: var(--font-size-base);
    line-height: var(--line-height);
    color: var(--color-text);
    background-color: var(--color-bg);
    transition: background-color var(--transition), color var(--transition);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    font-weight: 300;
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 500;
    letter-spacing: -0.03em;
    line-height: 1.15;
}

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

a:hover {
    opacity: 0.6;
}

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

/* ========================================
   Layout
   ======================================== */

.container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--space-lg);
}

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

main {
    flex: 1;
}

/* ========================================
   Header — minimal, incentio-style
   ======================================== */

.site-header {
    padding: var(--space-lg) 0;
    background: transparent;
    position: relative;
    z-index: 100;
}

.site-header .container {
    display: grid;
    grid-template-columns: auto 1fr auto auto;
    align-items: center;
    gap: 0 var(--space-lg);
}

.site-logo {
    text-decoration: none;
    color: var(--color-text);
    display: flex;
    align-items: center;
}

.logo-svg {
    height: 36px;
    width: auto;
}

.site-nav {
    display: flex;
    justify-content: center;
}

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

.nav-links a {
    color: var(--color-nav);
    font-family: var(--font-heading);
    font-size: var(--font-size-sm);
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    padding: var(--space-xs) 0;
    transition: color var(--transition);
    white-space: nowrap;
}

.nav-links a:hover,
.nav-links a.active {
    color: var(--color-nav-hover);
    opacity: 1;
}

.nav-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--space-sm);
    flex-direction: column;
    gap: 6px;
}

.nav-toggle span {
    display: block;
    width: 28px;
    height: 2px;
    background: var(--color-text);
    transition: var(--transition);
}

/* Theme toggle */
.theme-toggle {
    background: none;
    border: none;
    width: 44px;
    height: 44px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    color: var(--color-text);
    opacity: 0.6;
    transition: opacity var(--transition);
}

.theme-toggle:hover {
    opacity: 1;
}

[data-theme="dark"] .theme-toggle {
    color: #ffffff;
}

[data-theme="light"] .theme-icon-dark { display: none; }
[data-theme="dark"] .theme-icon-light { display: none; }

/* Language switcher */
.lang-switcher {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
}

.lang-flag {
    font-size: 1.3rem;
    opacity: 0.4;
    transition: opacity var(--transition);
    text-decoration: none;
    line-height: 1;
}

.lang-flag:hover {
    opacity: 1;
}

.lang-flag.active {
    opacity: 0.9;
}

/* ========================================
   Hero — large, bold, with profile image
   ======================================== */

.hero {
    padding: var(--space-xl) 0 var(--space-2xl);
}

.hero .container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-xl);
    align-items: center;
}

.hero-content {
    max-width: 540px;
}

.hero h1 {
    font-size: var(--font-size-2xl);
    font-weight: 600;
    margin-bottom: var(--space-lg);
    line-height: 1.05;
}

.hero-heading {
    display: inline-block;
    transition: transform 0.4s ease, opacity 0.4s ease;
}

.hero-heading.slide-out {
    transform: translateX(-40px);
    opacity: 0;
}

.hero-heading.slide-in {
    transform: translateX(40px);
    opacity: 0;
    transition: none;
}

.hero-subtitle {
    font-size: var(--font-size-lg);
    color: var(--color-text-secondary);
    font-weight: 300;
    margin-bottom: var(--space-xl);
    line-height: 1.7;
}

.hero-cta {
    display: flex;
    gap: var(--space-md);
    flex-wrap: wrap;
}

.hero-image {
    display: flex;
    justify-content: right;
}

.hero-image img {
    width: 100%;
    max-width: 380px;
    border-radius: 4px;
    filter: grayscale(100%);
}

/* ========================================
   Buttons — monochrome
   ======================================== */

.btn {
    display: inline-block;
    padding: 0.85rem 2rem;
    font-family: var(--font-heading);
    font-size: var(--font-size-sm);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    text-decoration: none;
    transition: all var(--transition);
    cursor: pointer;
    border: 1px solid var(--color-text);
}

.btn:hover {
    opacity: 1;
}

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

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

.btn-outline {
    background: transparent;
    color: var(--color-text);
    border-color: var(--color-text);
}

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

/* ========================================
   Sections
   ======================================== */

.section {
    padding: var(--space-2xl) 0;
}

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

.section-title {
    font-size: var(--font-size-2xl);
    margin-bottom: var(--space-xl);
}

.section-more {
    margin-top: var(--space-xl);
}

.section-more a {
    font-family: var(--font-heading);
    font-weight: 600;
    font-size: var(--font-size-sm);
    text-transform: uppercase;
    letter-spacing: 0.08em;
}

.page-title {
    font-size: var(--font-size-3xl);
    margin-bottom: var(--space-md);
}

.page-intro {
    color: var(--color-text-secondary);
    font-size: var(--font-size-lg);
    font-weight: 300;
    margin-bottom: var(--space-xl);
}

.empty-state {
    color: var(--color-text-muted);
    text-align: center;
    padding: var(--space-xl) 0;
    font-weight: 300;
}

/* ========================================
   Divider line between sections
   ======================================== */

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

/* ========================================
   Work Areas Grid — incentio-style
   ======================================== */

.areas-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1px;
    background: var(--color-border);
    border: 1px solid var(--color-border);
}

.area-card {
    background: var(--color-bg);
    padding: var(--space-xl) var(--space-lg);
    transition: background-color var(--transition);
}

.area-card:hover {
    background: var(--color-surface);
}

.area-card h3 {
    font-size: var(--font-size-lg);
    font-weight: 600;
    margin-bottom: var(--space-md);
    letter-spacing: -0.02em;
}

.area-card p {
    color: var(--color-text-secondary);
    font-size: var(--font-size-sm);
    font-weight: 300;
    line-height: 1.7;
}

@media (max-width: 535px) {
    .site-header .container {
        gap: var(--space-xs);
    }
}

@media (max-width: 768px) {
    .areas-grid {
        grid-template-columns: 1fr;
    }
}

@media (min-width: 769px) and (max-width: 1024px) {
    .areas-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* ========================================
   Project Cards
   ======================================== */

.project-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: var(--space-lg);
}

.project-card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    overflow: hidden;
    transition: border-color var(--transition);
}

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

.project-card-image {
    width: 100%;
    height: 200px;
    object-fit: cover;
    filter: grayscale(100%);
    transition: filter var(--transition);
}

.project-card:hover .project-card-image {
    filter: grayscale(0%);
}

.project-card-body {
    padding: var(--space-lg);
}

.project-card-body h2,
.project-card-body h3 {
    font-size: var(--font-size-lg);
    margin-bottom: var(--space-sm);
}

.project-card-body h2 a,
.project-card-body h3 a {
    color: var(--color-text);
}

.project-card-body h2 a:hover,
.project-card-body h3 a:hover {
    opacity: 0.6;
}

.project-card-body p {
    color: var(--color-text-secondary);
    font-size: var(--font-size-sm);
    font-weight: 300;
}

.tech-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-xs);
    margin-top: var(--space-md);
}

.tag {
    display: inline-block;
    padding: 0.2rem 0.6rem;
    border: 1px solid var(--color-border);
    font-family: var(--font-heading);
    font-size: 0.7rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--color-text-secondary);
}

/* ========================================
   Blog Posts
   ======================================== */

.post-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-xl);
}

.post-preview {
    padding-bottom: var(--space-xl);
    border-bottom: 1px solid var(--color-border);
}

.post-preview:last-child {
    border-bottom: none;
}

.post-preview time {
    font-family: var(--font-heading);
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    font-weight: 500;
}

.post-preview h2,
.post-preview h3 {
    font-size: var(--font-size-2xl);
    margin: var(--space-sm) 0;
}

.post-preview h2 a,
.post-preview h3 a {
    color: var(--color-text);
}

.post-preview p {
    color: var(--color-text-secondary);
    font-weight: 300;
}

.read-more {
    display: inline-block;
    margin-top: var(--space-md);
    font-family: var(--font-heading);
    font-weight: 600;
    font-size: var(--font-size-sm);
    text-transform: uppercase;
    letter-spacing: 0.08em;
}

/* Single post */
.post-header {
    margin-bottom: var(--space-xl);
}

.post-header h1 {
    font-size: var(--font-size-3xl);
    margin: var(--space-md) 0 var(--space-sm);
}

.post-header time {
    font-family: var(--font-heading);
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.08em;
}

.back-link {
    font-family: var(--font-heading);
    font-size: var(--font-size-sm);
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.08em;
}

.project-links {
    display: flex;
    gap: var(--space-md);
    margin-top: var(--space-xl);
    padding-top: var(--space-xl);
    border-top: 1px solid var(--color-border);
}

/* ========================================
   Prose (article content from WP)
   ======================================== */

.prose h2 {
    font-size: var(--font-size-xl);
    margin: var(--space-xl) 0 var(--space-md);
}

.prose h3 {
    font-size: var(--font-size-lg);
    margin: var(--space-lg) 0 var(--space-sm);
}

.prose p {
    margin-bottom: var(--space-md);
    font-weight: 300;
}

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

.prose li {
    margin-bottom: var(--space-xs);
    font-weight: 300;
}

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

.prose blockquote.recommendation {
    font-style: normal;
    background: var(--color-bg-alt);
    padding: var(--space-lg);
    border-radius: 4px;
}

.prose code {
    background: var(--color-code-bg);
    padding: 0.15rem 0.4rem;
    border-radius: 2px;
    font-family: var(--font-mono);
    font-size: 0.9em;
}

.prose pre {
    background: var(--color-code-bg);
    padding: var(--space-md);
    overflow-x: auto;
    margin: var(--space-lg) 0;
}

.prose pre code {
    background: none;
    padding: 0;
}

.prose img {
    margin: var(--space-lg) 0;
}

/* ========================================
   Pagination
   ======================================== */

.pagination {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-md);
    margin-top: var(--space-xl);
}

.pagination-info {
    color: var(--color-text-muted);
    font-size: var(--font-size-sm);
}

/* ========================================
   About Page
   ======================================== */

.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--space-lg);
    margin: var(--space-lg) 0;
}

.skill-group h3 {
    font-size: var(--font-size-sm);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    margin-bottom: var(--space-sm);
}

.skill-group ul {
    list-style: none;
    padding: 0;
}

.skill-group li {
    padding: var(--space-xs) 0;
    color: var(--color-text-secondary);
    font-size: var(--font-size-sm);
    font-weight: 300;
}

/* ========================================
   Contact Page
   ======================================== */

.contact-content {
    margin-top: var(--space-lg);
}

.contact-content > p {
    color: var(--color-text-secondary);
    font-size: var(--font-size-lg);
    font-weight: 300;
    margin-bottom: var(--space-xl);
}

.contact-methods {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--space-lg);
}

.contact-method {
    padding: var(--space-lg);
    border: 1px solid var(--color-border);
}

.contact-method h3 {
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--color-text-muted);
    margin-bottom: var(--space-sm);
}

.contact-method a {
    font-weight: 400;
    word-break: break-all;
}

/* ========================================
   Footer
   ======================================== */

.site-footer {
    padding: var(--space-xl) 0;
    border-top: 1px solid var(--color-border);
    margin-top: auto;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--space-md);
}

.footer-content p {
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
    font-weight: 300;
}

.footer-links {
    display: flex;
    gap: var(--space-lg);
}

.footer-links a {
    font-family: var(--font-heading);
    font-size: var(--font-size-sm);
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--color-text-secondary);
}

/* ========================================
   Responsive
   ======================================== */

@media (max-width: 1200px) {
    .nav-links {
        gap: var(--space-lg);
    }
}

@media (max-width: 930px) {
    .site-header .container {
        grid-template-columns: auto 1fr auto auto auto;
    }

    .nav-toggle {
        display: flex;
        grid-row: 1;
        grid-column: 5;
    }

    .site-logo { grid-row: 1; grid-column: 1; }
    .site-nav { grid-row: 1; grid-column: 2; }
    .lang-switcher { grid-row: 1; grid-column: 3; }
    .theme-toggle { grid-row: 1; grid-column: 4; }

    .nav-links {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        z-index: 99;
        flex-direction: column;
        padding: var(--space-md) var(--space-lg);
        gap: 0;
        background: var(--color-bg);
        border-bottom: 1px solid var(--color-border);
    }

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

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

    .nav-links li:last-child {
        border-bottom: none;
    }

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

@media (max-width: 768px) {
    .hero .container {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .hero h1 {
        font-size: var(--font-size-3xl);
    }

    .hero-subtitle {
        font-size: var(--font-size-base);
    }

    .hero-cta {
        justify-content: center;
    }

    .hero-image {
        order: -1;
    }

    .hero-image img {
        max-width: 250px;
    }

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

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

    .page-title {
        font-size: var(--font-size-2xl);
    }

    .footer-content {
        flex-direction: column;
        text-align: center;
    }
}