/* ============================================
   Portfolio Styles - Adrian Kostka
   ============================================ */

/* CSS Variables */
:root {
    --color-primary: #10b981;
    --color-primary-dark: #059669;
    --color-primary-light: #34d399;
    --color-text: #1f2937;
    --color-text-light: #6b7280;
    --color-bg: #ffffff;
    --color-bg-light: #f9fafb;
    --color-bg-dark: #111827;
    --color-border: #e5e7eb;
    --color-shadow: rgba(0, 0, 0, 0.1);
    --color-shadow-lg: rgba(0, 0, 0, 0.15);
    
    --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    --font-mono: 'SF Mono', Monaco, 'Cascadia Code', 'Roboto Mono', Consolas, monospace;
    
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-2xl: 4rem;
    
    --border-radius: 0.5rem;
    --border-radius-lg: 1rem;
    
    --transition: all 0.3s ease;
    --transition-fast: all 0.15s ease;
}

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
    overflow-x: hidden;
    width: 100%;
    max-width: 100vw;
}

body {
    font-family: var(--font-sans);
    color: var(--color-text);
    background-color: var(--color-bg);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
    width: 100%;
    max-width: 100vw;
}

/* Skip Link for Accessibility */
.skip-link {
    position: absolute;
    top: -40px;
    left: 0;
    background: var(--color-primary);
    color: white;
    padding: 8px;
    text-decoration: none;
    z-index: 100;
}

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

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.2;
    color: var(--color-text);
}

h1 {
    font-size: clamp(2.5rem, 5vw, 4rem);
}

h2 {
    font-size: clamp(2rem, 4vw, 3rem);
}

h3 {
    font-size: clamp(1.5rem, 3vw, 2rem);
}

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

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

a:hover {
    color: var(--color-primary-dark);
}

/* Container */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
    width: 100%;
    box-sizing: border-box;
}

@media (min-width: 768px) {
    .container {
        padding: 0 var(--spacing-lg);
    }
}

/* Header & Navigation */
.header {
    position: sticky;
    top: 0;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--color-border);
    z-index: 1000;
    box-shadow: 0 2px 4px var(--color-shadow);
}

.nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-sm) var(--spacing-md);
    min-height: 70px;
}

.nav-brand a {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-text);
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: var(--spacing-lg);
}

.nav-menu a {
    color: var(--color-text);
    font-weight: 500;
    padding: var(--spacing-xs) 0;
    position: relative;
}

.nav-menu a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--color-primary);
    transition: width var(--transition-fast);
}

.nav-menu a:hover::after {
    width: 100%;
}

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

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

/* Mobile Navigation */
@media (max-width: 768px) {
    .nav-toggle {
        display: flex;
    }
    
    .nav-menu {
        position: fixed;
        top: 70px;
        left: -100%;
        flex-direction: column;
        background: var(--color-bg);
        width: 100%;
        padding: var(--spacing-lg);
        box-shadow: 0 4px 6px var(--color-shadow);
        transition: left var(--transition);
    }
    
    .nav-menu.active {
        left: 0;
    }
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-sm) var(--spacing-lg);
    font-size: 1rem;
    font-weight: 600;
    border: none;
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: var(--transition);
    text-decoration: none;
}

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

.btn-primary:hover {
    background: var(--color-primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(16, 185, 129, 0.4);
}

.btn-secondary {
    background: transparent;
    color: var(--color-primary);
    border: 2px solid var(--color-primary);
}

.btn-secondary:hover {
    background: var(--color-primary);
    color: white;
}

/* Hero Section */
.hero {
    padding: var(--spacing-2xl) 0;
    background: linear-gradient(135deg, var(--color-bg-light) 0%, var(--color-bg) 100%);
}

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

@media (min-width: 968px) {
    .hero-content {
        grid-template-columns: 1fr 1fr;
    }
}

.hero-text h1 {
    margin-bottom: var(--spacing-sm);
}

.hero-tagline {
    font-size: clamp(1.25rem, 2vw, 1.5rem);
    color: var(--color-primary);
    font-weight: 600;
    margin-bottom: var(--spacing-md);
}

.hero-description {
    font-size: 1.125rem;
    color: var(--color-text-light);
    margin-bottom: var(--spacing-lg);
    line-height: 1.8;
}

.hero-cta {
    display: flex;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
    flex-wrap: wrap;
}

.hero-social {
    display: flex;
    gap: var(--spacing-md);
}

.hero-social a {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--color-bg-light);
    color: var(--color-text);
    transition: var(--transition);
}

.hero-social a:hover {
    background: var(--color-primary);
    color: white;
    transform: translateY(-3px);
}

.hero-image {
    display: flex;
    justify-content: center;
    align-items: center;
}

.portrait-placeholder {
    width: 100%;
    max-width: 400px;
    border-radius: var(--border-radius-lg);
    overflow: hidden;
    box-shadow: 0 20px 60px var(--color-shadow-lg);
}

.portrait-placeholder svg {
    width: 100%;
    height: auto;
    display: block;
}

.hero-portrait {
    width: 100%;
    max-width: 400px;
    height: auto;
    border-radius: var(--border-radius-lg);
    box-shadow: 0 20px 60px var(--color-shadow-lg);
    object-fit: cover;
    display: block;
}

/* Section Styles */
section {
    padding: var(--spacing-2xl) 0;
    width: 100%;
    max-width: 100vw;
    overflow-x: hidden;
    box-sizing: border-box;
}

.section-heading {
    text-align: center;
    margin-bottom: var(--spacing-xl);
    position: relative;
    padding-bottom: var(--spacing-md);
}

.section-heading::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 4px;
    background: var(--color-primary);
    border-radius: 2px;
}

/* Services Section */
.services {
    background: var(--color-bg-light);
    width: 100%;
    max-width: 100vw;
    overflow-x: hidden;
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-lg);
    width: 100%;
    box-sizing: border-box;
}

.service-card {
    background: var(--color-bg);
    padding: var(--spacing-lg);
    border-radius: var(--border-radius-lg);
    box-shadow: 0 4px 6px var(--color-shadow);
    transition: var(--transition);
    text-align: center;
}

.service-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 12px 24px var(--color-shadow-lg);
}

.service-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 80px;
    height: 80px;
    border-radius: 50%;
    background: var(--color-bg-light);
    color: var(--color-primary);
    margin-bottom: var(--spacing-md);
}

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

.service-card p {
    color: var(--color-text-light);
    line-height: 1.7;
}

/* Projects Section */
.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-lg);
    width: 100%;
    box-sizing: border-box;
}

.project-card {
    background: var(--color-bg);
    border-radius: var(--border-radius-lg);
    overflow: hidden;
    box-shadow: 0 4px 6px var(--color-shadow);
    transition: var(--transition);
    cursor: pointer;
}

.project-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 12px 24px var(--color-shadow-lg);
}

.project-image {
    position: relative;
    width: 100%;
    height: 200px;
    overflow: hidden;
    background: var(--color-bg-light);
}

.project-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition);
}

.project-card:hover .project-image img {
    transform: scale(1.1);
}

.project-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(16, 185, 129, 0.9);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: var(--transition);
}

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

.project-content {
    padding: var(--spacing-lg);
}

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

.project-content p {
    color: var(--color-text-light);
    margin-bottom: var(--spacing-md);
    line-height: 1.7;
}

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

.tag {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    background: var(--color-bg-light);
    color: var(--color-text);
    border-radius: 20px;
    font-size: 0.875rem;
    font-weight: 500;
}

.project-links {
    display: flex;
    gap: var(--spacing-md);
}

.project-link {
    color: var(--color-primary);
    font-weight: 600;
    position: relative;
}

.project-link::after {
    content: '→';
    margin-left: 4px;
    transition: var(--transition-fast);
}

.project-link:hover::after {
    transform: translateX(4px);
}

/* Modal */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 2000;
    overflow-y: auto;
    overflow-x: hidden;
}

.modal.active {
    display: flex;
}

.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(4px);
}

.modal-content {
    position: relative;
    max-width: 900px;
    width: 90%;
    max-width: min(900px, 90vw);
    max-height: 90vh;
    margin: var(--spacing-xl) auto;
    background: var(--color-bg);
    border-radius: var(--border-radius-lg);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    z-index: 2001;
    animation: modalSlideIn 0.3s ease;
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

@keyframes modalSlideIn {
    from {
        opacity: 0;
        transform: translateY(-20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.modal-close {
    position: absolute;
    top: var(--spacing-md);
    right: var(--spacing-md);
    width: 40px;
    height: 40px;
    border: none;
    background: var(--color-bg-light);
    border-radius: 50%;
    font-size: 1.5rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
    z-index: 10;
}

.modal-close:hover {
    background: var(--color-primary);
    color: white;
}

.modal-body {
    padding: var(--spacing-xl);
    overflow-x: hidden;
    overflow-y: auto;
    width: 100%;
    box-sizing: border-box;
    max-height: calc(100vh - 120px);
    scroll-behavior: smooth;
    /* Custom scrollbar for modal body */
    scrollbar-width: thin;
    scrollbar-color: var(--color-primary) transparent;
}

.modal-body::-webkit-scrollbar {
    width: 8px;
}

.modal-body::-webkit-scrollbar-track {
    background: transparent;
}

.modal-body::-webkit-scrollbar-thumb {
    background: var(--color-primary);
    border-radius: 4px;
}

.modal-body::-webkit-scrollbar-thumb:hover {
    background: var(--color-primary-dark);
}

.modal-title {
    margin-bottom: var(--spacing-lg);
    font-size: 2rem;
    padding-right: 50px; /* Space for close button */
    word-wrap: break-word;
}

.modal-images {
    margin-bottom: var(--spacing-lg);
    overflow: visible;
    width: 100%;
    clear: both;
}

.modal-images img {
    width: 100%;
    max-width: 100%;
    height: auto;
    border-radius: var(--border-radius);
    margin-bottom: var(--spacing-md);
    display: block;
    object-fit: contain;
    object-position: center;
    /* Prevent overflow */
    box-sizing: border-box;
}

/* Whiteboard container for draggable workflow images */
.whiteboard-container {
    position: relative;
    width: 100%;
    height: clamp(500px, 70vh, 800px);
    overflow: hidden;
    background: #f5f5f5;
    border-radius: var(--border-radius);
    cursor: grab;
    touch-action: pan-x pan-y;
    margin-bottom: var(--spacing-lg);
    box-sizing: border-box;
    /* Use fixed sizing that doesn't change with zoom */
    min-height: 500px;
    max-height: 800px;
    /* Visual boundaries - padding for better appearance */
    padding: var(--spacing-md);
    border: 2px solid #e5e7eb;
    display: flex;
    align-items: center;
    justify-content: center;
}

.whiteboard-container:active {
    cursor: grabbing;
}

.whiteboard-content {
    position: relative;
    width: 100%;
    height: 100%;
    box-sizing: border-box;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0;
    overflow: hidden;
}

.whiteboard-content img {
    width: 100%;
    height: 100%;
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
    object-position: center;
    display: block;
    pointer-events: none;
    user-select: none;
    -webkit-user-drag: none;
    border-radius: calc(var(--border-radius) - 2px);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    /* Ensure image fits completely without overflow */
    box-sizing: border-box;
}

.modal-description {
    margin-bottom: var(--spacing-lg);
    line-height: 1.8;
    color: var(--color-text-light);
    max-width: 100%;
    overflow-wrap: break-word;
    word-wrap: break-word;
    text-align: left;
}

.modal-description p {
    margin-bottom: var(--spacing-md);
    text-align: left;
    hyphens: auto;
    -webkit-hyphens: auto;
    -ms-hyphens: auto;
}

.modal-description p:last-child {
    margin-bottom: 0;
    padding-bottom: 0;
}

/* Ensure whiteboard ends cleanly after description */
.modal-images.has-whiteboard {
    margin-top: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

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

.modal-links {
    display: flex;
    gap: var(--spacing-md);
    flex-wrap: wrap;
}

/* Testimonials Section */
.testimonials {
    background: var(--color-bg-light);
}

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

.testimonial-card {
    background: var(--color-bg);
    padding: var(--spacing-lg);
    border-radius: var(--border-radius-lg);
    box-shadow: 0 4px 6px var(--color-shadow);
}

.testimonial-content {
    margin-bottom: var(--spacing-md);
}

.testimonial-content p {
    font-style: italic;
    color: var(--color-text-light);
    line-height: 1.8;
    position: relative;
    padding-left: var(--spacing-md);
}

.testimonial-content p::before {
    content: '"';
    position: absolute;
    left: 0;
    top: -10px;
    font-size: 3rem;
    color: var(--color-primary);
    opacity: 0.3;
}

.testimonial-author {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.testimonial-avatar {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    overflow: hidden;
    flex-shrink: 0;
}

.testimonial-info h4 {
    font-size: 1rem;
    margin-bottom: 0.25rem;
}

.testimonial-info p {
    font-size: 0.875rem;
    color: var(--color-text-light);
    margin: 0;
}

/* Resume Section */
.resume-content {
    max-width: 800px;
    margin: 0 auto;
}

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

.skills-section h3 {
    margin-bottom: var(--spacing-lg);
    text-align: center;
}

.skills-grid {
    display: grid;
    gap: var(--spacing-lg);
}

.skill-category h4 {
    margin-bottom: var(--spacing-sm);
    color: var(--color-primary);
    font-size: 1.25rem;
}

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

.skill-tag {
    display: inline-block;
    padding: 0.5rem 1rem;
    background: var(--color-bg-light);
    color: var(--color-text);
    border-radius: var(--border-radius);
    font-size: 0.9375rem;
    font-weight: 500;
    transition: var(--transition-fast);
}

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

/* Contact Section */
.contact {
    background: var(--color-bg-light);
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-xl);
    max-width: 900px;
    margin: 0 auto;
}

@media (min-width: 768px) {
    .contact-content {
        grid-template-columns: 1fr 1.5fr;
    }
}

.contact-info p {
    font-size: 1.125rem;
    color: var(--color-text-light);
    margin-bottom: var(--spacing-lg);
    line-height: 1.8;
}

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

.contact-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    background: var(--color-bg);
    border-radius: var(--border-radius);
    transition: var(--transition);
}

.contact-item:hover {
    background: var(--color-primary);
    color: white;
    transform: translateX(5px);
}

.contact-item svg {
    flex-shrink: 0;
}

/* Contact Form */
.contact-form {
    background: var(--color-bg);
    padding: var(--spacing-lg);
    border-radius: var(--border-radius-lg);
    box-shadow: 0 4px 6px var(--color-shadow);
}

.form-group {
    margin-bottom: var(--spacing-md);
}

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

.form-group input,
.form-group textarea {
    width: 100%;
    padding: var(--spacing-sm);
    border: 2px solid var(--color-border);
    border-radius: var(--border-radius);
    font-family: var(--font-sans);
    font-size: 1rem;
    transition: var(--transition-fast);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(16, 185, 129, 0.1);
}

.form-fallback {
    margin-top: var(--spacing-md);
    text-align: center;
    color: var(--color-text-light);
    font-size: 0.875rem;
}

/* Footer */
.footer {
    background: var(--color-bg-dark);
    color: white;
    padding: var(--spacing-xl) 0 var(--spacing-lg);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
}

.footer-section h3,
.footer-section h4 {
    color: white;
    margin-bottom: var(--spacing-md);
}

.footer-section ul {
    list-style: none;
}

.footer-section ul li {
    margin-bottom: var(--spacing-xs);
}

.footer-section a {
    color: rgba(255, 255, 255, 0.7);
    transition: var(--transition-fast);
}

.footer-section a:hover {
    color: var(--color-primary-light);
}

.footer-bottom {
    text-align: center;
    padding-top: var(--spacing-lg);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    color: rgba(255, 255, 255, 0.7);
}

/* Utility Classes */
.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;
}

/* Print Styles */
@media print {
    .header,
    .footer,
    .nav,
    .hero-cta,
    .contact-form {
        display: none;
    }
    
    body {
        color: #000;
        background: #fff;
    }
}