/* ============================================
   CSS Variables - Light Theme (Default)
   ============================================ */
:root {
    /* Colors */
    --bg: #ffffff;
    --bg-secondary: #f8f9fa;
    --text: #1a1a1a;
    --text-muted: #6c757d;
    --card: #ffffff;
    --card-hover: #f8f9fa;
    --accent: #0ea5e9;
    --accent-hover: #0284c7;
    --border: #e5e7eb;
    --shadow: rgba(0, 0, 0, 0.1);
    --shadow-hover: rgba(0, 0, 0, 0.15);
    
    /* Typography */
    --font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen', 'Ubuntu', 'Cantarell', 'Fira Sans', 'Droid Sans', 'Helvetica Neue', sans-serif;
    --font-size-base: 16px;
    --line-height-base: 1.6;
    --line-height-tight: 1.2;
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-2xl: 4rem;
    
    /* Layout */
    --container-max-width: 1100px;
    --border-radius: 12px;
    --border-radius-lg: 16px;
    
    /* Transitions */
    --transition: all 0.3s ease;
}

/* ============================================
   Dark Theme
   ============================================ */
[data-theme="dark"] {
    --bg: #0f172a;
    --bg-secondary: #1e293b;
    --text: #f1f5f9;
    --text-muted: #94a3b8;
    --card: #1e293b;
    --card-hover: #334155;
    --accent: #38bdf8;
    --accent-hover: #0ea5e9;
    --border: #334155;
    --shadow: rgba(0, 0, 0, 0.3);
    --shadow-hover: rgba(0, 0, 0, 0.4);
}

/* ============================================
   Reset & Base Styles
   ============================================ */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    line-height: var(--line-height-base);
    color: var(--text);
    background-color: var(--bg);
    transition: background-color 0.3s ease, color 0.3s ease;
}

/* ============================================
   Typography
   ============================================ */
h1, h2, h3, h4, h5, h6 {
    line-height: var(--line-height-tight);
    font-weight: 700;
    color: var(--text);
}

h1 {
    font-size: clamp(2rem, 5vw, 3rem);
}

h2 {
    font-size: clamp(1.75rem, 4vw, 2.5rem);
    margin-bottom: var(--spacing-lg);
}

h3 {
    font-size: clamp(1.25rem, 3vw, 1.75rem);
}

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

a:hover, a:focus {
    color: var(--accent-hover);
    outline: 2px solid var(--accent);
    outline-offset: 2px;
}

/* ============================================
   Container & Layout
   ============================================ */
.container {
    width: 100%;
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

/* ============================================
   Header & Navigation
   ============================================ */
.header {
    position: sticky;
    top: 0;
    z-index: 1000;
    background-color: var(--bg);
    border-bottom: 1px solid var(--border);
    backdrop-filter: blur(10px);
    background-color: rgba(255, 255, 255, 0.9);
    transition: var(--transition);
}

[data-theme="dark"] .header {
    background-color: rgba(15, 23, 42, 0.9);
}

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

.nav-logo {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text);
}

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

.nav-link {
    color: var(--text);
    font-weight: 500;
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--border-radius);
    transition: var(--transition);
}

.nav-link:hover,
.nav-link:focus,
.nav-link.active {
    background-color: var(--accent);
    color: white;
}

.nav-toggle {
    display: none;
    flex-direction: column;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--spacing-xs);
    gap: 4px;
}

.nav-toggle span {
    width: 25px;
    height: 3px;
    background-color: var(--text);
    border-radius: 2px;
    transition: var(--transition);
}

.theme-toggle,
.theme-toggle-footer {
    background: none;
    border: 1px solid var(--border);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--border-radius);
    cursor: pointer;
    font-size: 1.25rem;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
}

.theme-toggle:hover,
.theme-toggle:focus,
.theme-toggle-footer:hover,
.theme-toggle-footer:focus {
    background-color: var(--accent);
    border-color: var(--accent);
    color: white;
}

/* ============================================
   Hero Section
   ============================================ */
.hero {
    padding: var(--spacing-2xl) var(--spacing-md);
    text-align: center;
    background: linear-gradient(135deg, var(--bg-secondary) 0%, var(--bg) 100%);
}

.hero-content {
    max-width: 800px;
    margin: 0 auto;
}

.hero-avatar {
    width: 128px;
    height: 128px;
    border-radius: 50%;
    object-fit: cover;
    border: 3px solid var(--accent);
    box-shadow: 0 6px 20px var(--shadow);
    margin: 0 auto var(--spacing-md);
    display: block;
}

.hero-title {
    margin-bottom: var(--spacing-sm);
    background: linear-gradient(135deg, var(--accent), var(--accent-hover));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-tagline {
    font-size: clamp(1rem, 2.5vw, 1.25rem);
    color: var(--text-muted);
    margin-bottom: var(--spacing-xs);
}

.hero-location {
    color: var(--text-muted);
    margin-bottom: var(--spacing-md);
}

.hero-contacts {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-lg);
}

.contact-link {
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--border-radius);
    background-color: var(--card);
    border: 1px solid var(--border);
    transition: var(--transition);
    font-size: 0.9rem;
}

.contact-link:hover,
.contact-link:focus {
    background-color: var(--accent);
    color: white;
    border-color: var(--accent);
    transform: translateY(-2px);
}

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

/* ============================================
   Buttons
   ============================================ */
.btn {
    display: inline-block;
    padding: var(--spacing-sm) var(--spacing-lg);
    border-radius: var(--border-radius);
    font-weight: 600;
    text-align: center;
    cursor: pointer;
    transition: var(--transition);
    border: 2px solid transparent;
    font-size: 1rem;
}

.btn-primary {
    background-color: var(--accent);
    color: white;
    border-color: var(--accent);
}

.btn-primary:hover,
.btn-primary:focus {
    background-color: var(--accent-hover);
    border-color: var(--accent-hover);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px var(--shadow);
}

.btn-secondary {
    background-color: transparent;
    color: var(--accent);
    border-color: var(--accent);
}

.btn-secondary:hover,
.btn-secondary:focus {
    background-color: var(--accent);
    color: white;
    transform: translateY(-2px);
}

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

.btn-ghost:hover,
.btn-ghost:focus {
    background-color: var(--card);
    border-color: var(--accent);
    color: var(--accent);
}

/* ============================================
   Sections
   ============================================ */
.section {
    padding: var(--spacing-2xl) var(--spacing-md);
}

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

.section-title {
    text-align: center;
    margin-bottom: var(--spacing-xl);
}

/* ============================================
   About Section
   ============================================ */
.about-content {
    max-width: 700px;
    margin: 0 auto;
    text-align: center;
    font-size: 1.1rem;
    color: var(--text-muted);
}

/* ============================================
   Education Section
   ============================================ */
.education-card {
    background-color: var(--card);
    border: 1px solid var(--border);
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-lg);
    max-width: 800px;
    margin: 0 auto;
    box-shadow: 0 2px 8px var(--shadow);
    transition: var(--transition);
}

.education-card:hover {
    box-shadow: 0 4px 16px var(--shadow-hover);
    transform: translateY(-2px);
}

.education-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-sm);
    flex-wrap: wrap;
    gap: var(--spacing-sm);
}

.education-period {
    color: var(--text-muted);
    font-size: 0.9rem;
}

.education-degree {
    font-weight: 600;
    color: var(--accent);
    margin-bottom: var(--spacing-sm);
}

.education-bullets {
    list-style: none;
    padding-left: var(--spacing-md);
}

.education-bullets li {
    position: relative;
    padding-left: var(--spacing-md);
    margin-bottom: var(--spacing-xs);
    color: var(--text-muted);
}

.education-bullets li::before {
    content: "•";
    position: absolute;
    left: 0;
    color: var(--accent);
    font-weight: bold;
}

/* ============================================
   Experience Section
   ============================================ */
.experience-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-lg);
    max-width: 1000px;
    margin: 0 auto;
}

.experience-card {
    background-color: var(--card);
    border: 1px solid var(--border);
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-lg);
    box-shadow: 0 2px 8px var(--shadow);
    transition: var(--transition);
}

.experience-card:hover {
    box-shadow: 0 4px 16px var(--shadow-hover);
    transform: translateY(-4px);
}

.experience-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-sm);
    flex-wrap: wrap;
    gap: var(--spacing-sm);
}

.experience-period {
    color: var(--text-muted);
    font-size: 0.9rem;
}

.experience-role {
    font-weight: 600;
    color: var(--accent);
    margin-bottom: var(--spacing-sm);
}

.experience-description {
    color: var(--text-muted);
    line-height: 1.7;
}

/* ============================================
   Skills Section
   ============================================ */
.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-lg);
    max-width: 1000px;
    margin: 0 auto;
}

.skill-group {
    background-color: var(--card);
    border: 1px solid var(--border);
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-md);
    box-shadow: 0 2px 8px var(--shadow);
}

.skill-group-title {
    font-size: 1.1rem;
    margin-bottom: var(--spacing-sm);
    color: var(--accent);
}

.skill-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-xs);
}

.skill-tag {
    display: inline-block;
    padding: var(--spacing-xs) var(--spacing-sm);
    background-color: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: 20px;
    font-size: 0.9rem;
    color: var(--text);
    transition: var(--transition);
}

.skill-tag:hover {
    background-color: var(--accent);
    color: white;
    border-color: var(--accent);
    transform: translateY(-2px);
}

/* ============================================
   Projects Section
   ============================================ */
.filter-container {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-xl);
}

.filter-btn {
    padding: var(--spacing-xs) var(--spacing-md);
    background-color: var(--card);
    border: 1px solid var(--border);
    border-radius: 20px;
    cursor: pointer;
    font-weight: 500;
    color: var(--text);
    transition: var(--transition);
}

.filter-btn:hover,
.filter-btn:focus {
    background-color: var(--accent);
    color: white;
    border-color: var(--accent);
}

.filter-btn.active {
    background-color: var(--accent);
    color: white;
    border-color: var(--accent);
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-lg);
}

.project-card {
    background-color: var(--card);
    border: 1px solid var(--border);
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-lg);
    box-shadow: 0 2px 8px var(--shadow);
    transition: var(--transition);
    cursor: pointer;
    display: flex;
    flex-direction: column;
}

.project-card:hover,
.project-card:focus {
    box-shadow: 0 8px 24px var(--shadow-hover);
    transform: translateY(-4px);
    border-color: var(--accent);
}

.project-card.hidden {
    display: none;
}

.project-title {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-sm);
    color: var(--text);
}

.project-blurb {
    color: var(--text-muted);
    margin-bottom: var(--spacing-md);
    flex-grow: 1;
}

.project-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-xs);
    margin-bottom: var(--spacing-md);
}

.project-tag {
    padding: var(--spacing-xs) var(--spacing-sm);
    background-color: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: 20px;
    font-size: 0.85rem;
    color: var(--accent);
}

.project-card .btn {
    align-self: flex-start;
    margin-top: auto;
}

/* ============================================
   Project Detail Page
   ============================================ */
.project-detail[hidden] { display: none; }

.project-detail-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--spacing-md);
    margin: var(--spacing-lg) 0 var(--spacing-md);
}

.project-detail-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-xs);
}

.project-detail-media {
    margin: var(--spacing-md) 0 var(--spacing-lg);
}

.project-detail-media img {
    width: 100%;
    max-height: 420px;
    object-fit: cover;
    border-radius: var(--border-radius-lg);
    border: 1px solid var(--border);
    box-shadow: 0 8px 24px var(--shadow);
}

.project-detail-body {
    color: var(--text-muted);
    font-size: 1.05rem;
    line-height: 1.8;
}

/* ============================================
   Project Modal
   ============================================ */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 2000;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-md);
}

.modal[aria-hidden="false"] {
    display: flex;
}

.modal-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(4px);
}

.modal-content {
    position: relative;
    background-color: var(--card);
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-xl);
    max-width: 600px;
    width: 100%;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: 0 8px 32px var(--shadow-hover);
    z-index: 2001;
}

.modal-close {
    position: absolute;
    top: var(--spacing-md);
    right: var(--spacing-md);
    background: none;
    border: none;
    font-size: 2rem;
    cursor: pointer;
    color: var(--text);
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    transition: var(--transition);
}

.modal-close:hover,
.modal-close:focus {
    background-color: var(--bg-secondary);
    color: var(--accent);
}

.modal-title {
    margin-bottom: var(--spacing-md);
    color: var(--text);
}

.modal-body {
    color: var(--text-muted);
    line-height: 1.7;
    margin-bottom: var(--spacing-md);
}

.modal-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-xs);
}

.modal-tags .project-tag {
    background-color: var(--bg-secondary);
}

/* ============================================
   Websites Section
   ============================================ */
.websites-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-lg);
}

.website-card {
    background-color: var(--card);
    border: 1px solid var(--border);
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-lg);
    box-shadow: 0 2px 8px var(--shadow);
    transition: var(--transition);
    text-decoration: none;
    display: flex;
    flex-direction: column;
    position: relative;
}

.website-card:hover,
.website-card:focus {
    box-shadow: 0 8px 24px var(--shadow-hover);
    transform: translateY(-4px);
    border-color: var(--accent);
}

.website-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: var(--spacing-sm);
}

.website-title {
    font-size: 1.25rem;
    color: var(--text);
    margin-bottom: var(--spacing-xs);
}

.website-external-icon {
    font-size: 1.25rem;
    color: var(--accent);
    flex-shrink: 0;
}

.website-purpose {
    color: var(--text-muted);
    margin-bottom: var(--spacing-md);
}

.website-screenshot {
    width: 100%;
    height: 200px;
    background-color: var(--bg-secondary);
    border-radius: var(--border-radius);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-muted);
    font-size: 0.9rem;
    border: 1px dashed var(--border);
}

/* ============================================
   Languages Section
   ============================================ */
.languages-list {
    max-width: 600px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.language-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-md);
    background-color: var(--card);
    border: 1px solid var(--border);
    border-radius: var(--border-radius);
    box-shadow: 0 2px 8px var(--shadow);
}

.language-name {
    font-weight: 600;
    color: var(--text);
}

.language-stars {
    color: var(--accent);
    font-size: 1.1rem;
    letter-spacing: 2px;
}

/* ============================================
   Contact Section
   ============================================ */
.contact-content {
    max-width: 700px;
    margin: 0 auto;
}

.contact-info {
    display: flex;
    justify-content: center;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-xl);
    flex-wrap: wrap;
}

.contact-btn {
    padding: var(--spacing-sm) var(--spacing-lg);
    background-color: var(--card);
    border: 2px solid var(--accent);
    border-radius: var(--border-radius);
    color: var(--accent);
    font-weight: 600;
    transition: var(--transition);
    display: inline-block;
}

.contact-btn:hover,
.contact-btn:focus {
    background-color: var(--accent);
    color: white;
    transform: translateY(-2px);
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.form-group {
    display: flex;
    flex-direction: column;
}

.form-group label {
    margin-bottom: var(--spacing-xs);
    font-weight: 600;
    color: var(--text);
}

.form-group input,
.form-group textarea {
    padding: var(--spacing-sm);
    border: 1px solid var(--border);
    border-radius: var(--border-radius);
    background-color: var(--card);
    color: var(--text);
    font-family: var(--font-family);
    font-size: 1rem;
    transition: var(--transition);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(14, 165, 233, 0.1);
}

.form-group textarea {
    resize: vertical;
    min-height: 120px;
}

/* ============================================
   Toast Notification
   ============================================ */
.toast {
    position: fixed;
    bottom: var(--spacing-lg);
    right: var(--spacing-lg);
    background-color: var(--card);
    color: var(--text);
    padding: var(--spacing-md) var(--spacing-lg);
    border-radius: var(--border-radius);
    box-shadow: 0 4px 16px var(--shadow-hover);
    z-index: 3000;
    display: none;
    align-items: center;
    gap: var(--spacing-sm);
    border: 1px solid var(--border);
    max-width: 400px;
}

.toast.show {
    display: flex;
    animation: slideIn 0.3s ease;
}

@keyframes slideIn {
    from {
        transform: translateX(100%);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

/* ============================================
   Back to Top Button
   ============================================ */
.back-to-top {
    position: fixed;
    bottom: var(--spacing-lg);
    left: var(--spacing-lg);
    width: 50px;
    height: 50px;
    background-color: var(--accent);
    color: white;
    border: none;
    border-radius: 50%;
    cursor: pointer;
    font-size: 1.5rem;
    display: none;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 12px var(--shadow);
    z-index: 1000;
    transition: var(--transition);
}

.back-to-top.show {
    display: flex;
}

.back-to-top:hover,
.back-to-top:focus {
    background-color: var(--accent-hover);
    transform: translateY(-4px);
    box-shadow: 0 6px 16px var(--shadow-hover);
}

/* ============================================
   Footer
   ============================================ */
.footer {
    background-color: var(--bg-secondary);
    border-top: 1px solid var(--border);
    padding: var(--spacing-lg) var(--spacing-md);
    margin-top: var(--spacing-2xl);
}

.footer-content {
    max-width: var(--container-max-width);
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--spacing-md);
}

.footer-nav {
    display: flex;
    gap: var(--spacing-md);
    flex-wrap: wrap;
}

.footer-nav a {
    color: var(--text-muted);
    font-size: 0.9rem;
}

.footer-nav a:hover,
.footer-nav a:focus {
    color: var(--accent);
}

/* ============================================
   Responsive Design (Mobile First)
   ============================================ */
@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        top: 60px;
        left: -100%;
        flex-direction: column;
        background-color: var(--card);
        width: 100%;
        text-align: center;
        transition: 0.3s;
        box-shadow: 0 10px 27px var(--shadow);
        padding: var(--spacing-lg) 0;
        border-top: 1px solid var(--border);
    }

    .nav-menu.active {
        left: 0;
    }

    .nav-toggle {
        display: flex;
    }

    .nav-toggle.active span:nth-child(1) {
        transform: rotate(45deg) translate(5px, 5px);
    }

    .nav-toggle.active span:nth-child(2) {
        opacity: 0;
    }

    .nav-toggle.active span:nth-child(3) {
        transform: rotate(-45deg) translate(7px, -6px);
    }

    .hero-cta {
        flex-direction: column;
    }

    .hero-cta .btn {
        width: 100%;
    }

    .experience-grid,
    .projects-grid,
    .websites-grid {
        grid-template-columns: 1fr;
    }

    .skills-grid {
        grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    }

    .filter-container {
        justify-content: flex-start;
        overflow-x: auto;
        padding-bottom: var(--spacing-xs);
    }

    .filter-btn {
        white-space: nowrap;
    }

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

    .back-to-top {
        bottom: var(--spacing-md);
        left: var(--spacing-md);
        width: 45px;
        height: 45px;
    }

    .toast {
        bottom: var(--spacing-md);
        right: var(--spacing-md);
        left: var(--spacing-md);
        max-width: none;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 var(--spacing-sm);
    }

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

    .hero {
        padding: var(--spacing-xl) var(--spacing-sm);
    }

    .hero-contacts {
        flex-direction: column;
    }

    .contact-info {
        flex-direction: column;
    }

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

/* ============================================
   Print Styles (for PDF export)
   ============================================ */
@media print {
    .header,
    .nav,
    .hero-cta,
    .filter-container,
    .back-to-top,
    .theme-toggle,
    .theme-toggle-footer,
    .footer-nav,
    .contact-form,
    .toast {
        display: none;
    }

    body {
        background: white;
        color: black;
    }

    .section {
        page-break-inside: avoid;
        padding: var(--spacing-md) 0;
    }

    .project-card,
    .website-card,
    .experience-card {
        page-break-inside: avoid;
    }

    a {
        text-decoration: underline;
    }

    .btn {
        display: none;
    }
}

/* ============================================
   Accessibility
   ============================================ */
:focus-visible {
    outline: 3px solid var(--accent);
    outline-offset: 2px;
}

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border-width: 0;
}

/* Skip to main content link */
.skip-link {
    position: absolute;
    top: -40px;
    left: 0;
    background: var(--accent);
    color: white;
    padding: var(--spacing-sm);
    z-index: 10000;
}

.skip-link:focus {
    top: 0;
}