@import url('https://fonts.googleapis.com/css2?family=Poppins:ital,wght@0,100;0,200;0,300;0,400;0,500;0,600;0,700;0,800;0,900;1,100;1,200;1,300;1,400;1,500;1,600;1,700;1,800;1,900&display=swap');

:root {
    --bg-color: #000000;
    --text-color: #ffffff;
    --accent-color: #1e90ff;
    --card-bg: rgba(30, 144, 255, 0.1);
}

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

html {
    scroll-behavior: smooth;
}

body {
    background-color: var(--bg-color);
    color: var(--text-color);
    font-family: 'Poppins', sans-serif;
    margin: 0;
    overflow-x: hidden;
    line-height: 1.6;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

/* ===== LOADING SCREEN ===== */
.loading {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: var(--bg-color);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    z-index: 9999;
    transition: opacity 0.5s ease, visibility 0.5s ease;
}

.loading.hidden {
    opacity: 0;
    visibility: hidden;
}

.loading .spinner {
    width: 80px;
    height: 80px;
    position: relative;
    margin-bottom: 20px;
}

.double-bounce1, .double-bounce2 {
    width: 100%;
    height: 100%;
    border-radius: 50%;
    background-color: var(--accent-color);
    position: absolute;
    top: 0;
    left: 0;
    animation: bounce 2.0s infinite ease-in-out;
}

.double-bounce2 {
    animation-delay: -1.0s;
}

.loading-text {
    color: var(--text-color);
    font-size: 1.1rem;
    font-weight: 300;
    letter-spacing: 1px;
    text-align: center;
    animation: pulse 1.5s infinite ease-in-out;
}

/* ===== NAVBAR ===== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem 3rem;
    background: rgba(0, 0, 0, 0.35);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.07);
    z-index: 1000;
    transition: all 0.3s ease;
}

.navbar.scrolled {
    padding: 1rem 3rem;
    background: rgba(0, 0, 0, 0.95);
}

.navbar .logo {
    font-size: 1.7rem;
    font-weight: 700;
    letter-spacing: 1px;
}

.navbar .logo a {
    color: var(--accent-color);
    text-decoration: none;
    transition: color 0.25s ease;
}

.navbar .logo a:hover {
    color: #fff;
    text-shadow: 0 0 6px var(--accent-color);
}

.navbar .nav-links {
    list-style: none;
    display: flex;
    gap: 1.2rem;
    margin: 0;
    padding: 0;
    align-items: center;
}

.navbar .nav-links li a {
    color: var(--text-color);
    text-decoration: none;
    font-weight: 500;
    padding: 0.6rem 1rem;
    border-radius: 40px;
    transition: all 0.25s ease-in-out;
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

.navbar .nav-links li a:hover,
.navbar .nav-links li a.active {
    background-color: var(--accent-color);
    color: #000;
    font-weight: 600;
    box-shadow: 0 0 12px var(--accent-color);
    transform: translateY(-1px);
}

.hamburger {
    display: none;
    flex-direction: column;
    background: none;
    border: none;
    cursor: pointer;
    gap: 4px;
}

.hamburger span {
    width: 25px;
    height: 3px;
    background-color: var(--text-color);
    transition: all 0.3s ease;
}

/* ===== HERO SECTION ===== */
.hero {
    position: relative;
    height: 100vh;
    width: 100%;
    display: flex;
    justify-content: center;
    align-items: center;
    text-align: center;
    overflow: hidden;
}

.video-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -2;
}

.hero-video {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.video-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.4);
}

.hero .container {
    z-index: 1;
    max-width: 800px;
}

.hero h1 {
    font-size: 4rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: var(--text-color);
    text-shadow: 0 2px 20px rgba(0, 0, 0, 0.8);
    animation: fadeInUp 1s ease-out;
}

.hero p {
    font-size: 1.5rem;
    color: #dddddd;
    margin: 0 auto 2.5rem;
    line-height: 1.6;
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.8);
    animation: fadeInUp 1s ease-out 0.2s both;
}

.hero-buttons {
    display: flex;
    gap: 1.5rem;
    justify-content: center;
    flex-wrap: wrap;
    animation: fadeInUp 1s ease-out 0.4s both;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 1rem 2rem;
    border-radius: 20px;
    text-decoration: none;
    font-weight: 600;
    font-size: 1rem;
    transition: all 0.3s ease;
    border: 2px solid transparent;
    cursor: pointer;
}

.btn-primary {
    background: var(--accent-color);
    color: #000;
    box-shadow: 0 5px 15px rgba(30, 144, 255, 0.4);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(30, 144, 255, 0.6);
    background: var(--accent-color);
}

.btn-secondary {
    background: transparent;
    color: var(--text-color);
    border: 2px solid var(--accent-color);
    backdrop-filter: blur(10px);
}

.btn-secondary:hover {
    background: var(--accent-color);
    color: #000;
    transform: translateY(-3px);
}

.scroll-indicator {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    animation: bounce 2s infinite;
}

.scroll-indicator i {
    font-size: 2rem;
    color: var(--text-color);
    opacity: 0.7;
}

/* ===== ABOUT SECTION ===== */
.about {
    padding: 8rem 0;
    background: var(--bg-color);
}

.about-content {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 4rem;
    align-items: center;
}

.about-text h2 {
    font-size: 3rem;
    margin-bottom: 1.5rem;
    color: var(--accent-color);
    font-weight: 700;
}

.about-text p {
    font-size: 1.2rem;
    line-height: 1.7;
    color: #cccccc;
    margin-bottom: 2rem;
}

.vek, .dekovani {
    color: var(--accent-color);
    font-weight: 600;
}

.programovaci-jazyky {
    color: var(--accent-color);
    font-weight: 500;
}

.about-stats {
    display: flex;
    gap: 3rem;
    margin-top: 2rem;
}

.stat {
    text-align: center;
}

.stat h3 {
    font-size: 2.5rem;
    color: var(--accent-color);
    margin-bottom: 0.5rem;
    font-weight: 700;
}

.stat p {
    font-size: 1rem;
    color: #999;
    margin: 0;
}

.about-image {
    display: flex;
    justify-content: center;
}

.image-placeholder {
    width: 300px;
    height: 300px;
    background: linear-gradient(135deg, var(--accent-color), #0099ff);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 5rem;
    color: white;
    box-shadow: 0 20px 40px rgba(30, 144, 255, 0.3);
}

/* ===== SKILLS SECTION ===== */
.skills {
    padding: 8rem 0;
    background: var(--bg-color);
}

.skills h2 {
    font-size: 3rem;
    text-align: center;
    margin-bottom: 3rem;
    color: var(--accent-color);
    font-weight: 700;
}

.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
}

.skill-category {
    background: #000000;
    border-radius: 20px;
    padding: 2rem;
    backdrop-filter: blur(15px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    transition: all 0.3s ease;
}

.skill-category:hover {
    transform: translateY(-5px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
}

.skill-header {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 2rem;
}

.skill-header i {
    font-size: 2.5rem;
    color: var(--accent-color);
}

.skill-header h3 {
    color: var(--text-color);
    font-size: 1.5rem;
    font-weight: 600;
}

.skill-list {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.skill-item {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.skill-name {
    flex: 1;
    font-weight: 500;
    color: var(--text-color);
}

.skill-bar {
    flex: 2;
    height: 8px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 10px;
    overflow: hidden;
}

.skill-progress {
    height: 100%;
    background: linear-gradient(90deg, var(--accent-color), #00a8ff);
    border-radius: 10px;
    width: 0%;
    transition: width 1.5s ease;
}

.skill-percent {
    font-weight: 600;
    color: var(--accent-color);
    min-width: 50px;
    text-align: right;
}

/* ===== PROJECTS SECTION ===== */
.projects {
    padding: 8rem 0;
    background: var(--bg-color);
}

.projects h2 {
    font-size: 3rem;
    text-align: center;
    margin-bottom: 3rem;
    color: var(--accent-color);
    font-weight: 700;
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
}

.project-card {
    background: #000000;
    border-radius: 20px;
    overflow: hidden;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    transition: all 0.3s ease;
}

.project-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
}

.project-image {
    position: relative;
    height: 200px;
    background: linear-gradient(45deg, #1a1a2e, #16213e);
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
}

.project-image i {
    font-size: 4rem;
    color: var(--accent-color);
    opacity: 0.7;
}

.project-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.8);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: all 0.3s ease;
}

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

.project-links {
    display: flex;
    gap: 1rem;
}

.project-link, .project-github {
    width: 50px;
    height: 50px;
    background: var(--accent-color);
    color: #000;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    text-decoration: none;
    transition: all 0.3s ease;
    font-size: 1.2rem;
}

.project-github {
    background: #333;
    color: white;
}

.project-link:hover, .project-github:hover {
    transform: scale(1.1);
    box-shadow: 0 5px 15px rgba(30, 144, 255, 0.4);
}

.project-info {
    padding: 2rem;
}

.project-info h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--text-color);
    font-weight: 600;
}

.project-info p {
    color: #cccccc;
    margin-bottom: 1.5rem;
    line-height: 1.6;
}

.project-tech {
    display: flex;
    flex-wrap: wrap;
    gap: 0.8rem;
}

.project-tech span {
    background: rgba(255, 255, 255, 0.1);
    color: var(--text-color);
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-size: 0.9rem;
    border: 1px solid rgba(255, 255, 255, 0.2);
}

/* ===== CONTACT SECTION ===== */
.contact {
    padding: 8rem 0;
    background: var(--bg-color);
}

.contact h2 {
    font-size: 3rem;
    text-align: center;
    margin-bottom: 3rem;
    color: var(--accent-color);
    font-weight: 700;
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 1.5rem;
    padding: 2rem;
    background: #000;
    border-radius: 15px;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    transition: all 0.3s ease;
}

.contact-item:hover {
    transform: translateY(-5px);
}

.contact-item i {
    font-size: 2.5rem;
    color: var(--accent-color);
}

.contact-item h3 {
    margin-bottom: 0.5rem;
    color: var(--text-color);
    font-size: 1.2rem;
}

.contact-item p {
    color: #cccccc;
    margin: 0;
    font-size: 1rem;
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.contact-form input,
.contact-form textarea {
    padding: 1.2rem;
    background: rgba(0, 0, 0, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 10px;
    color: var(--text-color);
    font-family: inherit;
    backdrop-filter: blur(10px);
    font-size: 1rem;
    transition: all 0.3s ease;
}

.contact-form input:focus,
.contact-form textarea:focus {
    outline: none;
    border-color: var(--accent-color);
    box-shadow: 0 0 10px rgba(30, 144, 255, 0.3);
}

.contact-form textarea {
    resize: none;
    min-height: 150px;
}

/* ===== FOOTER ===== */
footer {
    background-color: rgba(0, 0, 0, 0.9);
    color: var(--text-color);
    text-align: center;
    padding: 2rem 0;
    font-size: 1rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.justfrozek {
    color: var(--accent-color);
    font-weight: 600;
}

/* ===== MODAL ===== */
.modal-success {
    position: fixed;
    z-index: 10000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(10px);
    display: none;
    justify-content: center;
    align-items: center;
}

.modal-success.active {
    display: flex;
}

.modal-content-success {
    background: linear-gradient(135deg, rgba(16, 16, 16, 0.95) 0%, rgba(30, 30, 40, 0.95) 100%);
    margin: 20px;
    padding: 40px 30px;
    border: 1px solid rgba(30, 144, 255, 0.3);
    border-radius: 20px;
    width: 90%;
    max-width: 450px;
    text-align: center;
    color: var(--text-color);
    backdrop-filter: blur(20px);
    box-shadow: 0 25px 50px rgba(0, 0, 0, 0.5);
    position: relative;
}

.success-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 25px;
    position: relative;
}

.success-circle {
    width: 100%;
    height: 100%;
    border: 3px solid rgba(30, 144, 255, 0.3);
    border-radius: 50%;
    position: absolute;
    top: 0;
    left: 0;
    animation: circlePulse 2s infinite;
}

.success-check {
    width: 100%;
    height: 100%;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
}

.success-check::before {
    content: '';
    width: 25px;
    height: 45px;
    border: 4px solid #00ff88;
    border-left: none;
    border-top: none;
    transform: rotate(45deg);
    position: absolute;
    top: 12px;
    left: 27px;
}

.modal-header-success {
    margin-bottom: 20px;
}

.modal-header-success h2 {
    font-size: 1.8rem;
    font-weight: 700;
    margin-bottom: 10px;
    color: var(--accent-color);
}

.modal-header-success p {
    color: #cccccc;
    font-size: 1rem;
    line-height: 1.5;
}

.close-success {
    position: absolute;
    top: 20px;
    right: 20px;
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.1);
    border: none;
    border-radius: 50%;
    color: var(--accent-color);
    font-size: 20px;
    font-weight: bold;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
}

.close-success:hover {
    background: rgba(30, 144, 255, 0.2);
    transform: rotate(90deg);
}

.modal-actions-success {
    display: flex;
    gap: 15px;
    justify-content: center;
    margin-top: 30px;
}

.btn-success-primary,
.btn-success-secondary {
    padding: 12px 30px;
    border: none;
    border-radius: 50px;
    cursor: pointer;
    font-weight: 600;
    font-size: 0.95rem;
    transition: all 0.3s ease;
}

.btn-success-primary {
    background: var(--accent-color);
    color: #000;
}

.btn-success-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(30, 144, 255, 0.6);
}

.btn-success-secondary {
    background: transparent;
    color: var(--text-color);
    border: 2px solid rgba(255, 255, 255, 0.2);
}

.btn-success-secondary:hover {
    border-color: var(--accent-color);
    background: rgba(30, 144, 255, 0.1);
}

.progress-bar {
    width: 100%;
    height: 4px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 2px;
    margin: 20px 0;
    overflow: hidden;
}

.progress-fill {
    width: 100%;
    height: 100%;
    background: var(--accent-color);
    border-radius: 2px;
    animation: progressFill 3s ease-in-out;
}

/* ===== ANIMATIONS ===== */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% {
        transform: translateY(0) translateX(-50%);
    }
    40% {
        transform: translateY(-10px) translateX(-50%);
    }
    60% {
        transform: translateY(-5px) translateX(-50%);
    }
}

@keyframes pulse {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.5;
    }
}

@keyframes circlePulse {
    0%, 100% {
        transform: scale(1);
        opacity: 1;
    }
    50% {
        transform: scale(1.1);
        opacity: 0.7;
    }
}

@keyframes progressFill {
    0% {
        width: 0%;
    }
    100% {
        width: 100%;
    }
}

/* ===== RESPONSIVE DESIGN ===== */
@media (max-width: 968px) {
    .about-content,
    .contact-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .skills-grid,
    .projects-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .navbar {
        padding: 1rem 1.5rem;
    }
    
    .nav-links {
        display: none;
        position: fixed;
        top: 70px;
        left: 0;
        width: 100%;
        background: rgba(0, 0, 0, 0.95);
        backdrop-filter: blur(20px);
        flex-direction: column;
        padding: 2rem;
        text-align: center;
    }
    
    .nav-links.active {
        display: flex;
    }
    
    .hamburger {
        display: flex;
    }
    
    .hero h1 {
        font-size: 2.5rem;
    }
    
    .hero p {
        font-size: 1.2rem;
    }
    
    .about-stats {
        flex-direction: column;
        gap: 1.5rem;
    }
    
    .image-placeholder {
        width: 200px;
        height: 200px;
        font-size: 3rem;
    }
    
    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .btn {
        width: 250px;
        justify-content: center;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 1rem;
    }
    
    .hero h1 {
        font-size: 2rem;
    }
    
    .hero p {
        font-size: 1rem;
    }
    
    .about-text h2,
    .skills h2,
    .projects h2,
    .contact h2 {
        font-size: 2rem;
    }
    
    .skills-grid,
    .projects-grid {
        grid-template-columns: 1fr;
    }
    
    .contact-content {
        grid-template-columns: 1fr;
    }
    
    .modal-content-success {
        margin: 10px;
        padding: 30px 20px;
    }
    
    .modal-actions-success {
        flex-direction: column;
    }
}