/* CSS is how you can add style to your website, such as colors, fonts, and positioning of your
   HTML content. To learn how to do something, just try searching Google for questions like
   "how to change link color." */

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

:root {
    --primary-dark: #0a0a14;
    --primary-blue: #1a1a2e;
    --primary-purple: #4a1e7c;
    --accent-blue: #00a8ff;
    --accent-purple: #9d4edd;
    --accent-pink: #ff2e93;
    --text-light: #ffffff;
    --text-gray: #b0b0c0;
    --card-dark: #151525;
    --card-light: #f8f9fa;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
    --glow: 0 0 20px rgba(157, 78, 221, 0.5);
}

body {
    font-family: 'Inter', sans-serif;
    background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary-blue) 50%, #0c0c1a 100%);
    color: var(--text-light);
    overflow-x: hidden;
    min-height: 100vh;
    position: relative;
    line-height: 1.6;
}

/* Czech Diacritics Support */
body {
    font-family: 'Inter', 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

/* LED Border Effect */
.led-border {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 1000;
    border: 3px solid transparent;
    border-image: linear-gradient(45deg, 
        var(--accent-blue), 
        var(--accent-purple), 
        var(--accent-pink),
        var(--accent-blue)) 1;
    animation: led-border-animation 4s linear infinite;
    border-radius: 0;
}

@keyframes led-border-animation {
    0% { border-image-source: linear-gradient(45deg, var(--accent-blue), var(--accent-purple), var(--accent-pink), var(--accent-blue)); }
    25% { border-image-source: linear-gradient(45deg, var(--accent-purple), var(--accent-pink), var(--accent-blue), var(--accent-purple)); }
    50% { border-image-source: linear-gradient(45deg, var(--accent-pink), var(--accent-blue), var(--accent-purple), var(--accent-pink)); }
    75% { border-image-source: linear-gradient(45deg, var(--accent-blue), var(--accent-purple), var(--accent-pink), var(--accent-blue)); }
    100% { border-image-source: linear-gradient(45deg, var(--accent-blue), var(--accent-purple), var(--accent-pink), var(--accent-blue)); }
}

/* Sidebar Navigation */
.sidebar {
    position: fixed;
    left: 20px;
    top: 50%;
    transform: translateY(-50%);
    z-index: 100;
    background: rgba(10, 10, 20, 0.8);
    backdrop-filter: blur(10px);
    border-radius: 20px;
    padding: 15px 10px;
    box-shadow: var(--shadow);
    border: 1px solid rgba(157, 78, 221, 0.3);
}

.sidebar ul {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.nav-btn {
    display: flex;
    flex-direction: column;
    align-items: center;
    color: var(--text-gray);
    text-decoration: none;
    padding: 12px;
    border-radius: 12px;
    transition: var(--transition);
    position: relative;
}

.nav-btn i {
    font-size: 1.5rem;
    margin-bottom: 5px;
}

.nav-btn span {
    font-size: 0.8rem;
    font-weight: 600;
    letter-spacing: 1px;
}

.nav-btn:hover, .nav-btn.active {
    color: var(--text-light);
    background: rgba(157, 78, 221, 0.2);
    transform: translateY(-3px);
}

.nav-btn.active::before {
    content: '';
    position: absolute;
    left: -10px;
    top: 50%;
    transform: translateY(-50%);
    width: 4px;
    height: 70%;
    background: var(--accent-purple);
    border-radius: 2px;
}

/* Main Content */
.main-content {
    width: 100%;
    max-width: 100%;
    padding: 20px;
}

.section {
    min-height: 100vh;
    padding: 80px 40px;
    display: none;
    opacity: 0;
    transform: translateY(20px);
    animation: section-fade 0.8s forwards;
    position: relative;
    overflow: hidden;
}

.section.active {
    display: block;
}

@keyframes section-fade {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Hero Section */
.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    overflow: hidden;
}

.tech-gradient {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle at 20% 50%, rgba(0, 168, 255, 0.15) 0%, transparent 50%),
                radial-gradient(circle at 80% 20%, rgba(157, 78, 221, 0.1) 0%, transparent 50%),
                radial-gradient(circle at 40% 80%, rgba(255, 46, 147, 0.08) 0%, transparent 50%);
    animation: gradient-shift 20s ease-in-out infinite alternate;
}

@keyframes gradient-shift {
    0% { transform: scale(1) rotate(0deg); }
    100% { transform: scale(1.2) rotate(5deg); }
}

.grid-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: 
        linear-gradient(rgba(255, 255, 255, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
    background-size: 50px 50px;
    animation: grid-move 20s linear infinite;
}

@keyframes grid-move {
    0% { background-position: 0 0; }
    100% { background-position: 50px 50px; }
}

.hero-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
    min-height: 80vh;
    max-width: 1400px;
    margin: 0 auto;
}

.hero-text {
    position: relative;
    z-index: 2;
}

.hero-badge {
    display: inline-block;
    background: rgba(0, 168, 255, 0.1);
    border: 1px solid var(--accent-blue);
    padding: 8px 20px;
    border-radius: 30px;
    margin-bottom: 30px;
    backdrop-filter: blur(10px);
    animation: badge-pulse 2s infinite;
}

@keyframes badge-pulse {
    0%, 100% { box-shadow: 0 0 10px rgba(0, 168, 255, 0.3); }
    50% { box-shadow: 0 0 20px rgba(0, 168, 255, 0.6); }
}

.hero-title {
    font-family: 'Orbitron', sans-serif;
    font-size: 4.5rem;
    font-weight: 900;
    margin-bottom: 20px;
    line-height: 1.1;
}

.title-part {
    display: block;
}

.highlight {
    color: var(--accent-purple);
    text-shadow: 0 0 20px rgba(157, 78, 221, 0.7);
    position: relative;
    display: inline-block;
}

.highlight::after {
    content: '';
    position: absolute;
    bottom: 5px;
    left: 0;
    width: 100%;
    height: 3px;
    background: linear-gradient(90deg, transparent, var(--accent-purple), transparent);
}

.typewriter {
    font-size: 1.8rem;
    margin-bottom: 15px;
    min-height: 2.5rem;
}

.typing-text {
    font-family: 'Orbitron', sans-serif;
    font-weight: 700;
    color: var(--accent-blue);
    border-right: 3px solid var(--accent-blue);
    padding-right: 5px;
    animation: blink 0.7s infinite;
}

@keyframes blink {
    0%, 100% { border-color: var(--accent-blue); }
    50% { border-color: transparent; }
}

.hero-desc {
    font-size: 1.3rem;
    color: var(--text-gray);
    margin-bottom: 40px;
    max-width: 600px;
}

.hero-stats {
    display: flex;
    gap: 40px;
    margin-bottom: 50px;
}

.stat {
    text-align: center;
}

.stat-number {
    display: block;
    font-family: 'Orbitron', sans-serif;
    font-size: 3rem;
    font-weight: 700;
    color: var(--accent-purple);
    line-height: 1;
}

.stat-label {
    font-size: 0.9rem;
    color: var(--text-gray);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.contact-icons {
    display: flex;
    gap: 20px;
    margin-bottom: 50px;
}

.icon-btn {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    transition: var(--transition);
    text-decoration: none;
    position: relative;
    overflow: hidden;
    cursor: pointer;
}

.icon-btn.black {
    background: var(--card-dark);
    color: var(--text-light);
    border: 2px solid var(--accent-blue);
}

.icon-btn.white {
    background: var(--card-light);
    color: var(--primary-dark);
    border: 2px solid var(--accent-purple);
}

.icon-btn:hover {
    transform: translateY(-5px) scale(1.1);
    box-shadow: var(--glow);
}

.icon-btn[data-tooltip]::after {
    content: attr(data-tooltip);
    position: absolute;
    bottom: 100%;
    left: 50%;
    transform: translateX(-50%);
    padding: 5px 10px;
    background: var(--card-dark);
    color: var(--text-light);
    border-radius: 5px;
    font-size: 0.8rem;
    white-space: nowrap;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
    margin-bottom: 10px;
}

.icon-btn[data-tooltip]:hover::after {
    opacity: 1;
    visibility: visible;
}

.scroll-indicator {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    color: var(--text-gray);
    font-size: 0.9rem;
    letter-spacing: 2px;
}

.scroll-arrow {
    margin-top: 10px;
    animation: bounce 2s infinite;
}

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

.hero-visual {
    position: relative;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.tech-shapes {
    position: relative;
    width: 500px;
    height: 500px;
}

.shape {
    position: absolute;
    border-radius: 50%;
    background: conic-gradient(from 0deg, var(--accent-blue), var(--accent-purple), var(--accent-pink), var(--accent-blue));
    opacity: 0.3;
    filter: blur(20px);
}

.shape-1 {
    width: 300px;
    height: 300px;
    top: 50px;
    left: 50px;
    animation: float-1 8s ease-in-out infinite;
}

.shape-2 {
    width: 200px;
    height: 200px;
    top: 150px;
    left: 250px;
    animation: float-2 10s ease-in-out infinite;
}

.shape-3 {
    width: 150px;
    height: 150px;
    top: 300px;
    left: 100px;
    animation: float-3 12s ease-in-out infinite;
}

@keyframes float-1 {
    0%, 100% { transform: translate(0, 0) rotate(0deg); }
    33% { transform: translate(30px, -30px) rotate(120deg); }
    66% { transform: translate(-20px, 20px) rotate(240deg); }
}

@keyframes float-2 {
    0%, 100% { transform: translate(0, 0) rotate(0deg); }
    33% { transform: translate(-40px, 20px) rotate(120deg); }
    66% { transform: translate(20px, -40px) rotate(240deg); }
}

@keyframes float-3 {
    0%, 100% { transform: translate(0, 0) rotate(0deg); }
    33% { transform: translate(20px, 40px) rotate(120deg); }
    66% { transform: translate(-40px, -20px) rotate(240deg); }
}

/* Blikající text TECH • HISTORY • STRATEGY */
.flashing-text {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-family: 'Orbitron', sans-serif;
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--text-light);
    text-align: center;
    display: flex;
    align-items: center;
    gap: 20px;
    text-shadow: 0 0 15px rgba(255, 255, 255, 0.6);
    background: rgba(0, 0, 0, 0.4);
    padding: 15px 25px;
    border-radius: 15px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
}

.flash-word {
    position: relative;
    padding: 5px 10px;
    border-radius: 5px;
    transition: all 0.3s ease;
}

.flash-separator {
    opacity: 0.7;
    color: var(--accent-blue);
    animation: separator-pulse 2s infinite;
}

@keyframes separator-pulse {
    0%, 100% { opacity: 0.7; }
    50% { opacity: 1; }
}

.tech {
    color: var(--accent-blue);
    animation: flash-tech 4s infinite;
}

@keyframes flash-tech {
    0%, 60%, 100% { 
        opacity: 1;
        text-shadow: 0 0 10px var(--accent-blue);
    }
    30%, 90% { 
        opacity: 0.3;
        text-shadow: 0 0 5px var(--accent-blue);
    }
}

.history {
    color: var(--accent-purple);
    animation: flash-history 5s infinite;
    animation-delay: 0.5s;
}

@keyframes flash-history {
    0%, 50%, 100% { 
        opacity: 1;
        text-shadow: 0 0 10px var(--accent-purple);
    }
    25%, 75% { 
        opacity: 0.3;
        text-shadow: 0 0 5px var(--accent-purple);
    }
}

.strategy {
    color: var(--accent-pink);
    animation: flash-strategy 6s infinite;
    animation-delay: 1s;
}

@keyframes flash-strategy {
    0%, 33%, 66%, 100% { 
        opacity: 1;
        text-shadow: 0 0 10px var(--accent-pink);
    }
    16%, 49%, 82% { 
        opacity: 0.3;
        text-shadow: 0 0 5px var(--accent-pink);
    }
}

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

.section-header h2 {
    font-family: 'Orbitron', sans-serif;
    font-size: 3rem;
    margin-bottom: 15px;
}

.section-line {
    width: 200px;
    height: 4px;
    background: linear-gradient(90deg, transparent, var(--accent-purple), var(--accent-blue), transparent);
    margin: 0 auto;
    border-radius: 2px;
}

/* About Section */
.about-content {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 50px;
    align-items: start;
    max-width: 1400px;
    margin: 0 auto;
}

.about-text {
    font-size: 1.1rem;
    line-height: 1.8;
    background: rgba(20, 20, 35, 0.6);
    padding: 40px;
    border-radius: 20px;
    border-left: 4px solid var(--accent-purple);
    backdrop-filter: blur(10px);
}

.about-text p {
    margin-bottom: 20px;
}

.highlight-text {
    color: var(--accent-blue);
    font-weight: 600;
}

.project-link {
    color: var(--accent-purple);
    text-decoration: none;
    font-weight: 600;
    position: relative;
    transition: var(--transition);
}

.project-link:hover {
    text-decoration: underline;
    color: var(--accent-pink);
}

/* Fotbalová sekce v O mně */
.football-info {
    background: rgba(0, 168, 255, 0.1);
    border-left: 3px solid var(--accent-blue);
    padding: 20px;
    border-radius: 10px;
    margin: 20px 0;
}

.football-info h4 {
    font-family: 'Orbitron', sans-serif;
    color: var(--accent-blue);
    margin-bottom: 15px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.football-info ul {
    margin-left: 20px;
    margin-top: 10px;
}

.football-info li {
    margin-bottom: 8px;
    line-height: 1.5;
}

.about-stats {
    display: grid;
    grid-template-columns: 1fr;
    gap: 20px;
}

.stat-card {
    background: linear-gradient(135deg, var(--card-dark) 0%, #1e1e3a 100%);
    padding: 30px;
    border-radius: 15px;
    text-align: center;
    border: 1px solid rgba(157, 78, 221, 0.2);
    transition: var(--transition);
    backdrop-filter: blur(10px);
}

.stat-card:hover {
    transform: translateY(-5px);
    border-color: var(--accent-purple);
    box-shadow: var(--glow);
}

.stat-card h3 {
    font-size: 1.8rem;
    margin-bottom: 10px;
    color: var(--accent-purple);
}

.stat-card p {
    color: var(--text-gray);
    font-size: 1rem;
}

/* Interests & Skills */
.interests-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    max-width: 1400px;
    margin: 0 auto;
}

.interests-column, .skills-column {
    padding: 40px;
    border-radius: 20px;
    background: rgba(20, 20, 35, 0.5);
    backdrop-filter: blur(10px);
}

.column-title {
    font-family: 'Orbitron', sans-serif;
    font-size: 2rem;
    margin-bottom: 30px;
    text-align: center;
    color: var(--accent-blue);
}

.items-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

.item-card {
    padding: 25px 20px;
    border-radius: 15px;
    text-align: center;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
    min-height: 160px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
}

.item-card:hover {
    transform: scale(1.05);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.4);
    z-index: 2;
}

.white-bg {
    background: var(--card-light);
    color: var(--primary-dark);
    border: 2px solid var(--accent-blue);
}

.black-bg {
    background: var(--card-dark);
    color: var(--text-light);
    border: 2px solid var(--accent-purple);
}

.item-card i {
    font-size: 2.5rem;
    margin-bottom: 15px;
    display: block;
}

.item-card.white-bg i {
    color: var(--accent-blue);
}

.item-card.black-bg i {
    color: var(--accent-purple);
}

.item-card h4 {
    font-size: 1.2rem;
    margin-bottom: 8px;
    font-weight: 600;
}

.item-card p {
    font-size: 0.9rem;
    opacity: 0.8;
}

/* Projects Section */
.projects-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    max-width: 1400px;
    margin: 0 auto;
}

.project-card {
    border-radius: 20px;
    padding: 40px;
    position: relative;
    overflow: hidden;
    min-height: 500px;
    display: flex;
    flex-direction: column;
    transition: var(--transition);
    backdrop-filter: blur(10px);
}

.project-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.5);
}

.black-project {
    background: linear-gradient(135deg, rgba(0, 0, 0, 0.8) 0%, rgba(26, 26, 46, 0.8) 100%);
    color: var(--text-light);
    border: 2px solid var(--accent-blue);
}

.white-project {
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.9) 0%, rgba(240, 240, 245, 0.9) 100%);
    color: var(--primary-dark);
    border: 2px solid var(--accent-purple);
}

.project-header {
    display: flex;
    align-items: center;
    margin-bottom: 25px;
    position: relative;
    z-index: 2;
}

.project-logo {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.8rem;
    margin-right: 20px;
}

.black-project .project-logo {
    background: rgba(0, 168, 255, 0.2);
    color: var(--accent-blue);
}

.white-project .project-logo {
    background: rgba(157, 78, 221, 0.2);
    color: var(--accent-purple);
}

.project-header h3 {
    font-family: 'Orbitron', sans-serif;
    font-size: 1.8rem;
    flex-grow: 1;
}

.project-status {
    padding: 5px 15px;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
    letter-spacing: 1px;
}

.completed {
    background: rgba(0, 255, 0, 0.1);
    color: #00ff00;
    border: 1px solid #00ff00;
}

.in-progress {
    background: rgba(255, 165, 0, 0.1);
    color: #ffa500;
    border: 1px solid #ffa500;
}

.project-body {
    flex-grow: 1;
    margin-bottom: 25px;
    position: relative;
    z-index: 2;
}

.project-body p {
    margin-bottom: 20px;
    line-height: 1.6;
}

.read-more-content {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.5s ease;
    margin-top: 20px;
}

.read-more-content.active {
    max-height: 1000px;
}

.project-expanded, .bunkers-expanded {
    padding: 20px;
    background: rgba(0, 0, 0, 0.2);
    border-radius: 10px;
    margin-top: 20px;
}

.white-project .project-expanded,
.white-project .bunkers-expanded {
    background: rgba(255, 255, 255, 0.1);
}

.project-expanded h4,
.bunkers-expanded h4 {
    font-family: 'Orbitron', sans-serif;
    font-size: 1.4rem;
    margin-bottom: 15px;
    color: var(--accent-blue);
}

.white-project .project-expanded h4,
.white-project .bunkers-expanded h4 {
    color: var(--accent-purple);
}

.project-expanded h5,
.bunkers-expanded h5 {
    font-size: 1.1rem;
    margin: 15px 0 10px 0;
    color: var(--text-light);
    display: flex;
    align-items: center;
    gap: 10px;
}

.white-project .project-expanded h5,
.white-project .bunkers-expanded h5 {
    color: var(--primary-dark);
}

.project-expanded ul,
.bunkers-expanded ul {
    margin-left: 20px;
    margin-bottom: 20px;
}

.project-expanded li,
.bunkers-expanded li {
    margin-bottom: 8px;
    line-height: 1.5;
}

.bunker-detail {
    margin-bottom: 25px;
    padding-bottom: 25px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.white-project .bunker-detail {
    border-bottom-color: rgba(0, 0, 0, 0.1);
}

.bunker-detail:last-child {
    border-bottom: none;
    margin-bottom: 0;
    padding-bottom: 0;
}

.wiki-link {
    display: flex;
    gap: 15px;
    margin-top: 20px;
}

.wiki-btn, .discord-btn {
    padding: 10px 20px;
    border-radius: 25px;
    text-decoration: none;
    font-weight: 600;
    font-size: 0.9rem;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    transition: var(--transition);
}

.wiki-btn {
    background: var(--accent-blue);
    color: var(--text-light);
}

.discord-btn {
    background: #5865F2;
    color: var(--text-light);
}

.wiki-btn:hover, .discord-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.3);
}

.project-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: relative;
    z-index: 2;
    margin-top: auto;
}

.project-tools {
    display: flex;
    gap: 10px;
}

.tool-tag {
    padding: 5px 12px;
    border-radius: 15px;
    font-size: 0.8rem;
    font-weight: 600;
}

.black-project .tool-tag {
    background: rgba(0, 168, 255, 0.2);
    color: var(--accent-blue);
    border: 1px solid var(--accent-blue);
}

.white-project .tool-tag {
    background: rgba(157, 78, 221, 0.2);
    color: var(--accent-purple);
    border: 1px solid var(--accent-purple);
}

.read-more-btn {
    background: none;
    border: none;
    color: inherit;
    font-family: inherit;
    font-size: 1rem;
    display: flex;
    align-items: center;
    gap: 10px;
    cursor: pointer;
    padding: 8px 16px;
    border-radius: 20px;
    transition: var(--transition);
}

.black-project .read-more-btn {
    background: rgba(0, 168, 255, 0.1);
}

.white-project .read-more-btn {
    background: rgba(157, 78, 221, 0.1);
}

.read-more-btn:hover {
    transform: translateY(-3px);
}

.read-more-btn i {
    transition: transform 0.3s ease;
}

.read-more-btn.active i {
    transform: rotate(180deg);
}

/* Contact Section */
.contact-container {
    max-width: 1200px;
    margin: 0 auto;
}

.contact-cards {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
    margin-bottom: 60px;
}

.contact-card {
    padding: 40px 30px;
    border-radius: 20px;
    text-decoration: none;
    display: block;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
    min-height: 250px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    cursor: pointer;
}

.contact-card:hover {
    transform: translateY(-10px) scale(1.03);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4);
}

.black-card {
    background: linear-gradient(135deg, var(--card-dark) 0%, #1a1a2e 100%);
    color: var(--text-light);
    border: 2px solid var(--accent-blue);
}

.white-card {
    background: linear-gradient(135deg, var(--card-light) 0%, #ffffff 100%);
    color: var(--primary-dark);
    border: 2px solid var(--accent-purple);
}

.discord-card {
    cursor: pointer;
}

.contact-card[data-tooltip]::after {
    content: attr(data-tooltip);
    position: absolute;
    top: 20px;
    right: 20px;
    padding: 5px 10px;
    background: var(--card-dark);
    color: var(--text-light);
    border-radius: 5px;
    font-size: 0.8rem;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
    z-index: 10;
}

.contact-card[data-tooltip]:hover::after {
    opacity: 1;
    visibility: visible;
}

.contact-icon {
    font-size: 3rem;
    margin-bottom: 20px;
}

.black-card .contact-icon {
    color: var(--accent-blue);
}

.white-card .contact-icon {
    color: var(--accent-purple);
}

.contact-card h3 {
    font-family: 'Orbitron', sans-serif;
    font-size: 1.8rem;
    margin-bottom: 10px;
}

.contact-card p {
    margin-bottom: 20px;
    opacity: 0.8;
    font-size: 1.1rem;
}

.discord-username {
    font-family: monospace;
    background: rgba(0, 0, 0, 0.1);
    padding: 8px 12px;
    border-radius: 5px;
    display: inline-block;
    margin: 10px 0;
}

.contact-link {
    font-weight: 600;
    font-size: 1rem;
    letter-spacing: 1px;
    display: inline-flex;
    align-items: center;
    gap: 5px;
}

.black-card .contact-link {
    color: var(--accent-blue);
}

.white-card .contact-link {
    color: var(--accent-purple);
}

.contact-footer {
    text-align: center;
    padding-top: 40px;
    border-top: 1px solid rgba(157, 78, 221, 0.3);
    color: var(--text-gray);
    font-size: 1rem;
}

.motto {
    font-style: italic;
    margin-top: 15px;
    font-size: 1.2rem;
    color: var(--accent-blue);
}

/* Toast Notification */
.toast {
    position: fixed;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%) translateY(100px);
    background: var(--card-dark);
    color: var(--text-light);
    padding: 15px 30px;
    border-radius: 10px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
    border: 1px solid var(--accent-blue);
    z-index: 10000;
    opacity: 0;
    transition: transform 0.3s ease, opacity 0.3s ease;
    backdrop-filter: blur(10px);
}

.toast.show {
    transform: translateX(-50%) translateY(0);
    opacity: 1;
}

/* Částice */
.particle {
    position: absolute;
    border-radius: 50%;
    pointer-events: none;
    z-index: 1;
    opacity: 0.6;
    width: 4px;
    height: 4px;
    background: rgba(255, 255, 255, 0.8);
    box-shadow: 0 0 10px rgba(255, 255, 255, 0.5);
}

@keyframes float-particle {
    0% {
        transform: translate(0, 0) rotate(0deg);
        opacity: 0.6;
    }
    25% {
        transform: translate(calc(var(--move-x) * 100px), calc(var(--move-y) * 100px)) rotate(90deg);
        opacity: 1;
    }
    50% {
        transform: translate(calc(var(--move-x) * -50px), calc(var(--move-y) * -50px)) rotate(180deg);
        opacity: 0.6;
    }
    75% {
        transform: translate(calc(var(--move-x) * 75px), calc(var(--move-y) * 75px)) rotate(270deg);
        opacity: 1;
    }
    100% {
        transform: translate(0, 0) rotate(360deg);
        opacity: 0.6;
    }
}

/* Smooth scroll pro celou stránku */
html {
    scroll-behavior: smooth;
}

/* Responsive Design */
@media (max-width: 1400px) {
    .hero-container,
    .about-content,
    .interests-container,
    .projects-grid {
        max-width: 1200px;
    }
}

@media (max-width: 1200px) {
    .hero-title {
        font-size: 3.5rem;
    }
    
    .hero-container {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 40px;
    }
    
    .hero-visual {
        order: -1;
        height: 400px;
    }
    
    .tech-shapes {
        width: 400px;
        height: 400px;
    }
    
    .flashing-text {
        font-size: 1.2rem;
        gap: 15px;
        padding: 12px 20px;
    }
    
    .about-content {
        grid-template-columns: 1fr;
    }
    
    .projects-grid {
        grid-template-columns: 1fr;
        gap: 30px;
    }
    
    .contact-cards {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 992px) {
    .sidebar {
        display: none;
    }
    
    .section {
        padding: 60px 20px;
    }
    
    .hero-title {
        font-size: 3rem;
    }
    
    .interests-container {
        grid-template-columns: 1fr;
        gap: 30px;
    }
    
    .items-grid {
        grid-template-columns: 1fr;
    }
    
    .contact-cards {
        grid-template-columns: 1fr;
    }
    
    .hero-stats {
        justify-content: center;
    }
    
    .scroll-indicator {
        align-items: center;
    }
    
    .flashing-text {
        flex-direction: column;
        gap: 10px;
        font-size: 1.1rem;
    }
}

@media (max-width: 768px) {
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-desc {
        font-size: 1.1rem;
    }
    
    .section-header h2 {
        font-size: 2.5rem;
    }
    
    .about-text {
        padding: 25px;
    }
    
    .project-card {
        padding: 25px;
    }
    
    .contact-card {
        padding: 30px 20px;
    }
    
    .tech-shapes {
        width: 300px;
        height: 300px;
    }
    
    .hero-stats {
        flex-direction: column;
        gap: 20px;
    }
    
    .stat-number {
        font-size: 2.5rem;
    }
}

@media (max-width: 480px) {
    .section {
        padding: 40px 15px;
    }
    
    .hero-title {
        font-size: 2.2rem;
    }
    
    .contact-icons {
        flex-wrap: wrap;
        justify-content: center;
    }
    
    .project-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 15px;
    }
    
    .project-header h3 {
        font-size: 1.5rem;
    }
    
    .project-footer {
        flex-direction: column;
        gap: 15px;
        align-items: flex-start;
    }
    
    .project-tools {
        flex-wrap: wrap;
    }
}