:root {
--bg-color: #0a0a0c;
--accent-glow: rgba(255, 255, 255, 0.05);
--glass-bg: rgba(255, 255, 255, 0.03);
--glass-border: rgba(255, 255, 255, 0.08);
--text-main: #f3f4f6;
--text-muted: #9ca3af;
--accent-white: #ffffff;
}

* {
box-sizing: border-box;
margin: 0;
padding: 0;
font-family: 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
scroll-behavior: smooth;
}

body {
background-color: var(--bg-color);
color: var(--text-main);
overflow-x: hidden;
position: relative;
}

/* Tło z dynamicznym gradientem */
body::before {
content: '';
position: fixed;
top: -10%;
left: -10%;
width: 120%;
height: 120%;
background: 
    radial-gradient(circle at 20% 30%, rgba(255, 255, 255, 0.02) 0%, transparent 40%),
    radial-gradient(circle at 80% 70%, rgba(255, 255, 255, 0.03) 0%, transparent 40%);
z-index: -1;
pointer-events: none;
}

/* Pasek nawigacji (Glassmorphism) */
header {
position: fixed;
top: 0;
left: 0;
width: 100%;
z-index: 1000;
background: rgba(10, 10, 12, 0.7);
backdrop-filter: blur(12px);
-webkit-backdrop-filter: blur(12px);
border-bottom: 1px solid var(--glass-border);
}

.nav-container {
max-width: 1200px;
margin: 0 auto;
display: flex;
align-items: center;
padding: 1.2rem 2rem;
position: relative;
}

.logo {
font-size: 1.6rem;
font-weight: 800;
letter-spacing: 2px;
color: var(--accent-white);
text-decoration: none;
position: relative;
transition: opacity 0.3s;
}

.logo:hover {
opacity: 0.8;
}

.logo span {
color: var(--text-muted);
font-weight: 300;
}

nav {
    position: absolute;
    right: 32px;
}

nav ul {
display: flex;
list-style: none;
gap: 2rem;
}

nav a {
color: var(--text-muted);
text-decoration: none;
font-size: 0.95rem;
font-weight: 500;
letter-spacing: 1px;
transition: all 0.3s ease;
position: relative;
padding: 0.5rem 0;
}

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

nav a::after {
content: '';
position: absolute;
bottom: 0;
left: 0;
width: 0;
height: 1px;
background-color: var(--accent-white);
transition: width 0.3s ease;
}

nav a:hover::after, nav a.active::after {
width: 100%;
}

/* Główny kontener */
main {
max-width: 1100px;
margin: 0 auto;
padding: 120px 2rem 60px 2rem;
}

section {
padding: 4rem 0;
opacity: 0;
transform: translateY(30px);
transition: all 0.8s ease-out;
}

section.visible {
opacity: 1;
transform: translateY(0);
}

/* Sekcja Główna */
.hero {
display: flex;
align-items: center;
justify-content: space-between;
gap: 4rem;
min-height: 70vh;
}

.hero-content {
flex: 1;
}

.hero-tag {
font-size: 0.85rem;
text-transform: uppercase;
letter-spacing: 3px;
color: var(--text-muted);
margin-bottom: 1rem;
display: inline-block;
border-left: 2px solid var(--accent-white);
padding-left: 8px;
}

.hero h1 {
font-size: 3.5rem;
font-weight: 800;
line-height: 1.1;
margin-bottom: 1.5rem;
color: var(--accent-white);
}

.hero p {
font-size: 1.1rem;
color: var(--text-muted);
line-height: 1.6;
margin-bottom: 2.5rem;
max-width: 540px;
}

.cta-buttons {
display: flex;
gap: 1.5rem;
}

.btn {
display: inline-block;
padding: 0.8rem 2rem;
font-size: 0.9rem;
font-weight: 600;
letter-spacing: 1px;
text-decoration: none;
border-radius: 4px;
transition: all 0.3s ease;
cursor: pointer;
}

.btn-primary {
background-color: var(--accent-white);
color: var(--bg-color);
border: 1px solid var(--accent-white);
white-space: nowrap;
}

.btn-primary:hover {
background-color: transparent;
color: var(--accent-white);
box-shadow: 0 0 20px rgba(255, 255, 255, 0.1);
}

.btn-secondary {
background-color: var(--glass-bg);
color: var(--text-main);
border: 1px solid var(--glass-border);
backdrop-filter: blur(4px);
}

.btn-secondary:hover {
background-color: rgba(255, 255, 255, 0.1);
border-color: var(--accent-white);
}

/* Profil / Github Efekt Szkła */
.hero-image-container {
position: relative;
flex: 0 0 320px;
height: 320px;
}

.glass-profile-card {
width: 100%;
height: 100%;
background: var(--glass-bg);
border: 1px solid var(--glass-border);
border-radius: 16px;
backdrop-filter: blur(10px);
-webkit-backdrop-filter: blur(10px);
padding: 2rem;
display: flex;
flex-direction: column;
align-items: center;
justify-content: center;
position: relative;
overflow: hidden;
transition: transform 0.3s ease, box-shadow 0.3s ease;
box-shadow: 0 20px 40px rgba(0,0,0,0.5);
}

.glass-profile-card:hover {
transform: translateY(-5px) rotate(1deg);
border-color: rgba(255, 255, 255, 0.2);
box-shadow: 0 25px 50px rgba(255,255,255,0.03);
}

/* Atrapa zdjęcia profilowego z logo GitHub */
.avatar-placeholder {
width: 120px;
height: 120px;
min-height: 120px;
border-radius: 50%;
background: rgba(255, 255, 255, 0.05);
border: 1px solid var(--glass-border);
margin-bottom: 1.5rem;
display: flex;
align-items: center;
justify-content: center;
transition: transform 0.5s ease;
}

.glass-profile-card:hover .avatar-placeholder {
transform: scale(1.05);
}

.avatar-placeholder svg {
width: 60px;
height: 60px;
fill: var(--text-main);
}

.profile-info {
text-align: center;
}

.profile-info h3 {
font-size: 1.25rem;
color: var(--accent-white);
margin-bottom: 0.3rem;
}

.profile-info p {
font-size: 0.85rem;
color: var(--text-muted);
margin-bottom: 1rem;
}

/* Sekcja Nagłówki */
.section-title {
font-size: 1.8rem;
font-weight: 700;
letter-spacing: 2px;
margin-bottom: 3rem;
color: var(--accent-white);
text-transform: uppercase;
position: relative;
display: inline-block;
}

/* Prace / Projekty */
.projects-grid {
display: grid;
grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
gap: 2rem;
}

.project-card {
background: var(--glass-bg);
border: 1px solid var(--glass-border);
border-radius: 8px;
padding: 2rem;
backdrop-filter: blur(6px);
-webkit-backdrop-filter: blur(6px);
transition: all 0.4s cubic-bezier(0.165, 0.84, 0.44, 1);
display: flex;
flex-direction: column;
justify-content: space-between;
min-height: 240px;
}

.project-card:hover {
transform: translateY(-8px);
border-color: rgba(255, 255, 255, 0.2);
background: rgba(255, 255, 255, 0.05);
box-shadow: 0 15px 30px rgba(0,0,0,0.4);
}

.project-header {
display: flex;
justify-content: space-between;
align-items: flex-start;
margin-bottom: 1.5rem;
}

.project-icon {
color: var(--text-muted);
}

.project-link-icon {
color: var(--text-muted);
transition: color 0.3s;
}

.project-card:hover .project-link-icon {
color: var(--accent-white);
}

.project-card h3 {
font-size: 1.2rem;
color: var(--accent-white);
margin-bottom: 0.75rem;
font-weight: 600;
}

.project-card p {
font-size: 0.9rem;
color: var(--text-muted);
line-height: 1.5;
margin-bottom: 1.5rem;
}

.project-tags {
display: flex;
gap: 0.75rem;
font-size: 0.75rem;
font-family: monospace;
color: rgba(255,255,255,0.4);
}

/* Umiejętności (Paski Postępu) */
.skills-container {
background: var(--glass-bg);
border: 1px solid var(--glass-border);
border-radius: 12px;
padding: 3rem;
backdrop-filter: blur(8px);
-webkit-backdrop-filter: blur(8px);
max-width: 800px;
}

.skill-item {
margin-bottom: 2rem;
}

.skill-item:last-child {
margin-bottom: 0;
}

.skill-info {
display: flex;
justify-content: space-between;
margin-bottom: 0.6rem;
font-size: 0.9rem;
letter-spacing: 1px;
}

.skill-name {
font-weight: 500;
color: var(--text-main);
}

.skill-percentage {
color: var(--text-muted);
font-weight: 400;
}

.progress-bar-bg {
width: 100%;
height: 4px;
background-color: rgba(255, 255, 255, 0.05);
border-radius: 2px;
overflow: hidden;
position: relative;
}

.progress-bar-fill {
height: 100%;
width: 0; /* Animowane przez JS */
background-color: var(--accent-white);
border-radius: 2px;
transition: width 1.5s cubic-bezier(0.1, 0.8, 0.2, 1);
box-shadow: 0 0 8px rgba(255, 255, 255, 0.5);
}

/* Stopka */
footer {
border-top: 1px solid var(--glass-border);
padding: 2rem;
text-align: center;
font-size: 0.8rem;
color: var(--text-muted);
letter-spacing: 1px;
margin-top: 4rem;
}

/* Menu Mobilne */
.menu-toggle {
position: absolute;
display: none;
flex-direction: column;
gap: 6px;
cursor: pointer;
background: none;
border: none;
z-index: 1001;
right: 32px;
}

.menu-toggle span {
display: block;
width: 25px;
height: 2px;
background-color: var(--text-main);
transition: all 0.3s ease;
}

.avatar {
    width: 80%;
    height: 80%;
    margin-right: 10%;
    border-radius: 50%;
}

/* Responsywność */
@media (max-width: 768px) {
.hero {
    flex-direction: column-reverse;
    text-align: center;
    gap: 2rem;
    padding-top: 2rem;
}

.hero h1 {
    font-size: 2.5rem;
}

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

.hero-image-container {
    flex: 0 0 260px;
    height: 260px;
}

.menu-toggle {
    display: flex;
}

nav ul {
    position: fixed;
    top: 0;
    right: -100%;
    width: 70%;
    height: 100vh;
    background: rgba(10, 10, 12, 0.95);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 3rem;
    transition: right 0.4s ease;
    border-left: 1px solid var(--glass-border);
}

nav ul.active {
    right: 0;
}

/* Animacja burgera */
.menu-toggle.active span:nth-child(1) {
    transform: translateY(8px) rotate(45deg);
}
.menu-toggle.active span:nth-child(2) {
    opacity: 0;
}
.menu-toggle.active span:nth-child(3) {
    transform: translateY(-8px) rotate(-45deg);
}

.skills-container {
    padding: 2rem 1.5rem;
}
}