/* ===========================================
   MACIEJ IZAK PORTFOLIO - CSS STYLES
   Based on VibOps DevOps Website Design
   =========================================== */

/* === CSS Variables === */
:root {
    --bg-primary: #0f1419;
    --bg-secondary: #1a1f2e;
    --bg-tertiary: #252d3d;
    --text-primary: #ffffff;
    --text-secondary: #8b949e;
    --text-muted: #6e7681;
    --accent-primary: #58a6ff;
    --accent-green: #3fb950;
    --accent-purple: #a371f7;
    --accent-orange: #f0883e;
    --border-color: #30363d;
    --gradient-start: #58a6ff;
    --gradient-end: #a371f7;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
}

/* === Container === */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* === Navigation === */
nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    background: rgba(15, 20, 25, 0.9);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border-color);
}

.nav-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px 24px;
    max-width: 1200px;
    margin: 0 auto;
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    text-decoration: none;
    color: var(--text-primary);
}

.logo-text {
    font-size: 24px;
    font-weight: 700;
}

.logo-text span {
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-links {
    display: flex;
    gap: 32px;
    align-items: center;
}

.nav-links a {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 14px;
    font-weight: 500;
    transition: color 0.2s;
}

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

/* === Buttons === */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 10px 20px;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.2s;
    cursor: pointer;
    border: none;
}

.btn-primary {
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
    color: white;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(88, 166, 255, 0.3);
}

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

.btn-secondary:hover {
    background: var(--bg-secondary);
    border-color: var(--accent-primary);
}

.btn-large {
    padding: 14px 28px;
    font-size: 16px;
}

/* === Hero Section === */
.hero {
    padding: 140px 0 80px;
    position: relative;
    overflow: visible;
}

.hero::before {
    content: '';
    position: absolute;
    top: -200px;
    left: 50%;
    transform: translateX(-50%);
    width: 1000px;
    height: 1000px;
    background: radial-gradient(ellipse at center, rgba(88, 166, 255, 0.15) 0%, rgba(163, 113, 247, 0.05) 40%, transparent 70%);
    pointer-events: none;
    z-index: -1;
}

.hero-content {
    display: flex;
    align-items: center;
    gap: 60px;
}

.hero-photo {
    flex-shrink: 0;
}

.photo-placeholder {
    width: 220px;
    height: 220px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
    padding: 4px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.photo-inner {
    width: 100%;
    height: 100%;
    border-radius: 50%;
    background: var(--bg-secondary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 80px;
    color: var(--text-muted);
}

.photo-inner img {
    width: 100%;
    height: 100%;
    border-radius: 50%;
    object-fit: cover;
}

.hero-text h1 {
    font-size: clamp(40px, 6vw, 56px);
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: 8px;
}

.hero-text h1 span {
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-title {
    font-size: 24px;
    color: var(--accent-primary);
    font-weight: 600;
    margin-bottom: 16px;
}

.hero-tagline {
    font-size: 18px;
    color: var(--text-secondary);
    margin-bottom: 24px;
    max-width: 500px;
}

.hero-social {
    display: flex;
    gap: 16px;
    margin-bottom: 24px;
}

.hero-social a {
    width: 44px;
    height: 44px;
    border-radius: 12px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
    transition: all 0.2s;
}

.hero-social a:hover {
    border-color: var(--accent-primary);
    color: var(--accent-primary);
    transform: translateY(-2px);
}

.hero-cta {
    display: flex;
    gap: 16px;
}

/* === Stats Section === */
.stats {
    padding: 40px 0;
    border-top: 1px solid var(--border-color);
    border-bottom: 1px solid var(--border-color);
    background: var(--bg-secondary);
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 32px;
    text-align: center;
}

.stat-item {
    padding: 20px;
}

.stat-value {
    font-size: 42px;
    font-weight: 800;
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 8px;
}

.stat-label {
    font-size: 14px;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 1px;
}

/* === Section Headers === */
.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-header h2 {
    font-size: clamp(28px, 5vw, 40px);
    font-weight: 700;
    margin-bottom: 16px;
}

.section-header h2 span {
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.section-header p {
    font-size: 18px;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

/* === About Section === */
.about {
    padding: 80px 0;
}

.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.about-text p {
    color: var(--text-secondary);
    font-size: 16px;
    margin-bottom: 20px;
    line-height: 1.8;
}

.about-highlights {
    display: grid;
    gap: 16px;
}

.highlight-item {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 16px;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 12px;
}

.highlight-icon {
    width: 48px;
    height: 48px;
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
}

.highlight-item strong {
    display: block;
    margin-bottom: 4px;
}

.highlight-item span {
    font-size: 14px;
    color: var(--text-secondary);
}

/* === Experience Section === */
.experience {
    padding: 80px 0;
    background: var(--bg-secondary);
}

.timeline {
    position: relative;
    max-width: 900px;
    margin: 0 auto;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 2px;
    background: linear-gradient(180deg, var(--gradient-start), var(--gradient-end));
}

.timeline-item {
    position: relative;
    padding-left: 40px;
    padding-bottom: 40px;
}

.timeline-item:last-child {
    padding-bottom: 0;
}

.timeline-dot {
    position: absolute;
    left: -6px;
    top: 0;
    width: 14px;
    height: 14px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
    border: 3px solid var(--bg-secondary);
}

.timeline-content {
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 24px;
    transition: all 0.3s;
}

.timeline-content:hover {
    border-color: var(--accent-primary);
    transform: translateX(8px);
}

.timeline-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 16px;
    flex-wrap: wrap;
    gap: 12px;
}

.timeline-company {
    font-size: 20px;
    font-weight: 700;
    color: var(--accent-primary);
}

.timeline-role {
    font-size: 16px;
    color: var(--text-secondary);
    margin-top: 4px;
}

.timeline-date {
    font-size: 14px;
    color: var(--text-muted);
    background: var(--bg-tertiary);
    padding: 6px 12px;
    border-radius: 20px;
}

.timeline-achievements {
    list-style: none;
    margin-bottom: 16px;
}

.timeline-achievements li {
    position: relative;
    padding-left: 20px;
    margin-bottom: 8px;
    color: var(--text-secondary);
    font-size: 14px;
}

.timeline-achievements li::before {
    content: '→';
    position: absolute;
    left: 0;
    color: var(--accent-green);
}

.timeline-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.tag {
    font-size: 12px;
    padding: 4px 10px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    color: var(--text-secondary);
}

/* === Projects Section === */
.projects {
    padding: 80px 0;
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 24px;
}

.project-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    overflow: hidden;
    transition: all 0.3s;
}

.project-card:hover {
    transform: translateY(-8px);
    border-color: var(--accent-primary);
    box-shadow: 0 20px 40px rgba(88, 166, 255, 0.15);
}

.project-card.featured {
    grid-column: span 2;
}

.project-preview {
    aspect-ratio: 16/9;
    background: var(--bg-tertiary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 48px;
    color: var(--text-muted);
    position: relative;
    overflow: hidden;
}

.project-preview img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.project-preview::after {
    content: '▶';
    position: absolute;
    width: 60px;
    height: 60px;
    background: rgba(88, 166, 255, 0.9);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    color: white;
    opacity: 0;
    transition: opacity 0.3s;
}

.project-card:hover .project-preview::after {
    opacity: 1;
}

.project-info {
    padding: 24px;
}

.project-badge {
    display: inline-block;
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 1px;
    padding: 4px 10px;
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
    border-radius: 20px;
    margin-bottom: 12px;
}

.project-info h3 {
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 8px;
}

.project-info p {
    color: var(--text-secondary);
    font-size: 14px;
    margin-bottom: 16px;
}

.project-links {
    display: flex;
    gap: 12px;
}

.project-links a {
    font-size: 13px;
    color: var(--accent-primary);
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 6px;
}

.project-links a:hover {
    text-decoration: underline;
}

/* === Skills Section === */
.skills {
    padding: 80px 0;
    background: var(--bg-secondary);
}

.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 24px;
}

.skill-category {
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 24px;
}

.skill-category h3 {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    gap: 12px;
}

.skill-category h3 span {
    font-size: 24px;
}

.skill-list {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.skill-item {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.skill-name {
    font-size: 14px;
    color: var(--text-secondary);
    display: flex;
    justify-content: space-between;
}

.skill-bar {
    height: 8px;
    background: var(--bg-tertiary);
    border-radius: 4px;
    overflow: hidden;
}

.skill-progress {
    height: 100%;
    background: linear-gradient(90deg, var(--gradient-start), var(--gradient-end));
    border-radius: 4px;
    transition: width 1s ease-out;
}

/* === Education Section === */
.education {
    padding: 80px 0;
}

.education-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 24px;
    max-width: 900px;
    margin: 0 auto;
}

.education-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 24px;
    display: flex;
    gap: 20px;
}

.education-icon {
    width: 56px;
    height: 56px;
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 28px;
    flex-shrink: 0;
}

.education-info h3 {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 4px;
}

.education-info .degree {
    color: var(--accent-primary);
    font-size: 14px;
    margin-bottom: 8px;
}

.education-info .years {
    font-size: 13px;
    color: var(--text-muted);
}

/* === Contact Section === */
.contact {
    padding: 80px 0;
    background: linear-gradient(135deg, rgba(88, 166, 255, 0.1), rgba(163, 113, 247, 0.1));
    border-top: 1px solid var(--border-color);
}

.contact-content {
    text-align: center;
    max-width: 600px;
    margin: 0 auto;
}

.contact-content h2 {
    font-size: clamp(28px, 5vw, 40px);
    font-weight: 700;
    margin-bottom: 16px;
}

.contact-content > p {
    color: var(--text-secondary);
    font-size: 18px;
    margin-bottom: 40px;
}

.contact-links {
    display: flex;
    justify-content: center;
    gap: 24px;
    flex-wrap: wrap;
    margin-bottom: 32px;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 16px 24px;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    color: var(--text-primary);
    text-decoration: none;
    transition: all 0.2s;
}

.contact-item:hover {
    border-color: var(--accent-primary);
    transform: translateY(-4px);
}

.contact-item span:first-child {
    font-size: 24px;
}

/* === Footer === */
footer {
    padding: 40px 0;
    border-top: 1px solid var(--border-color);
    text-align: center;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 20px;
}

.footer-text {
    color: var(--text-muted);
    font-size: 14px;
}

.footer-text a {
    color: var(--accent-primary);
    text-decoration: none;
}

.footer-social {
    display: flex;
    gap: 16px;
}

.footer-social a {
    color: var(--text-muted);
    transition: color 0.2s;
    font-size: 20px;
}

.footer-social a:hover {
    color: var(--text-primary);
}

/* === Responsive === */
@media (max-width: 968px) {
    .hero-content {
        flex-direction: column;
        text-align: center;
    }

    .hero-tagline {
        margin: 0 auto 24px;
    }

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

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

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

    .project-card.featured {
        grid-column: span 1;
    }
}

@media (max-width: 768px) {
    .nav-links {
        display: none;
    }

    .hero {
        padding: 120px 0 60px;
    }

    .stats-grid {
        grid-template-columns: 1fr 1fr;
        gap: 16px;
    }

    .stat-value {
        font-size: 32px;
    }

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

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

    .timeline::before {
        left: 6px;
    }

    .timeline-dot {
        left: 0;
    }

    .contact-links {
        flex-direction: column;
        align-items: center;
    }

    .footer-content {
        flex-direction: column;
    }
}