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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, #0f172a 0%, #1e293b 50%, #0f172a 100%);
    color: #e2e8f0;
    line-height: 1.6;
    overflow-x: hidden;
    position: relative;
}

#app {
    min-height: 100vh;
    position: relative;
    z-index: 1;
}

.animated-bg {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 0;
    overflow: hidden;
}

.shape {
    position: absolute;
    border-radius: 50%;
    background: linear-gradient(135deg, rgba(96, 165, 250, 0.1), rgba(6, 182, 212, 0.05));
    animation: float 20s infinite ease-in-out;
}

.shape-1 {
    width: 120px;
    height: 120px;
    top: 10%;
    left: 5%;
    animation-delay: 0s;
    animation-duration: 25s;
}

.shape-2 {
    width: 80px;
    height: 80px;
    top: 60%;
    right: 10%;
    animation-delay: 3s;
    animation-duration: 20s;
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.08), rgba(147, 51, 234, 0.04));
}

.shape-3 {
    width: 150px;
    height: 150px;
    bottom: 20%;
    left: 15%;
    animation-delay: 5s;
    animation-duration: 30s;
    background: linear-gradient(135deg, rgba(6, 182, 212, 0.06), rgba(34, 197, 94, 0.03));
}

.shape-4 {
    width: 60px;
    height: 60px;
    top: 30%;
    right: 25%;
    animation-delay: 7s;
    animation-duration: 22s;
    background: linear-gradient(135deg, rgba(251, 146, 60, 0.05), rgba(239, 68, 68, 0.02));
}

.shape-5 {
    width: 100px;
    height: 100px;
    bottom: 10%;
    right: 30%;
    animation-delay: 10s;
    animation-duration: 28s;
    background: linear-gradient(135deg, rgba(168, 85, 247, 0.07), rgba(236, 72, 153, 0.03));
}

.geometric {
    position: absolute;
    background: linear-gradient(45deg, rgba(96, 165, 250, 0.03), rgba(6, 182, 212, 0.01));
    animation: rotate 30s infinite linear;
}

.geo-1 {
    width: 200px;
    height: 200px;
    top: 20%;
    left: -100px;
    animation-delay: 0s;
    animation-duration: 40s;
    transform: rotate(45deg);
}

.geo-2 {
    width: 150px;
    height: 150px;
    bottom: 30%;
    right: -75px;
    animation-delay: 15s;
    animation-duration: 35s;
    transform: rotate(30deg);
    background: linear-gradient(45deg, rgba(59, 130, 246, 0.04), rgba(147, 51, 234, 0.02));
}

@keyframes float {
    0%, 100% {
        transform: translateY(0) translateX(0) scale(1);
    }
    25% {
        transform: translateY(-30px) translateX(20px) scale(1.05);
    }
    50% {
        transform: translateY(20px) translateX(-15px) scale(0.95);
    }
    75% {
        transform: translateY(-15px) translateX(-25px) scale(1.02);
    }
}

@keyframes rotate {
    0% {
        transform: rotate(0deg) translateY(0);
    }
    100% {
        transform: rotate(360deg) translateY(20px);
    }
}

.particle {
    position: absolute;
    width: 4px;
    height: 4px;
    background: rgba(96, 165, 250, 0.4);
    border-radius: 50%;
    animation: particle 15s infinite linear;
}

.particle-1 { top: 20%; left: 10%; animation-delay: 0s; }
.particle-2 { top: 50%; left: 30%; animation-delay: 2s; }
.particle-3 { top: 80%; left: 50%; animation-delay: 4s; }
.particle-4 { top: 30%; left: 70%; animation-delay: 6s; }
.particle-5 { top: 60%; left: 90%; animation-delay: 8s; }

@keyframes particle {
    0% {
        transform: translateY(0) translateX(0);
        opacity: 0;
    }
    10% {
        opacity: 1;
    }
    90% {
        opacity: 1;
    }
    100% {
        transform: translateY(-100vh) translateX(50px);
        opacity: 0;
    }
}

nav {
    position: fixed;
    width: 100%;
    background: rgba(15, 23, 42, 0.8);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid #334155;
    z-index: 50;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 64px;
}

.logo {
    font-size: 28px;
    font-weight: bold;
    background: linear-gradient(to right, #60a5fa, #06b6d4);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-menu {
    display: flex;
    gap: 32px;
}

.nav-menu a {
    color: #e2e8f0;
    text-decoration: none;
    transition: color 0.3s;
}

.nav-menu a:hover {
    color: #60a5fa;
}

.menu-btn {
    display: none;
    background: none;
    border: none;
    color: #e2e8f0;
    cursor: pointer;
    font-size: 24px;
}

@media (max-width: 768px) {
    .nav-menu {
        display: none;
        flex-direction: column;
        position: absolute;
        top: 64px;
        left: 0;
        right: 0;
        background: #0f172a;
        border-bottom: 1px solid #334155;
        padding: 20px;
        gap: 16px;
    }

    .nav-menu.active {
        display: flex;
    }

    .menu-btn {
        display: block;
    }
}

.hero {
    padding: 120px 20px 80px;
    text-align: center;
}

.hero-content {
    max-width: 800px;
    margin: 0 auto;
}

.hero h1 {
    font-size: 56px;
    margin-bottom: 24px;
    background: linear-gradient(to right, #60a5fa, #06b6d4, #3b82f6);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero p {
    font-size: 20px;
    color: #cbd5e1;
    margin-bottom: 32px;
}

.button-group {
    display: flex;
    justify-content: center;
    gap: 16px;
    flex-wrap: wrap;
}

.btn {
    padding: 12px 32px;
    border-radius: 8px;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.3s;
    border: none;
    cursor: pointer;
    font-size: 16px;
}

.btn-primary {
    background: #3b82f6;
    color: white;
}

.btn-primary:hover {
    background: #2563eb;
    transform: scale(1.05);
}

.btn-secondary {
    background: transparent;
    color: #60a5fa;
    border: 2px solid #60a5fa;
}

.btn-secondary:hover {
    background: rgba(96, 165, 250, 0.1);
}

section {
    padding: 80px 20px;
    max-width: 1200px;
    margin: 0 auto;
}

section:nth-child(even) {
    background: rgba(30, 41, 59, 0.5);
}

h2 {
    font-size: 40px;
    margin-bottom: 48px;
    text-align: center;
}

.experience-card {
    background: rgba(71, 85, 105, 0.3);
    padding: 24px;
    border-radius: 8px;
    border: 1px solid #475569;
    margin-bottom: 32px;
    transition: all 0.3s;
}

.experience-card:hover {
    border-color: #60a5fa;
    box-shadow: 0 0 20px rgba(96, 165, 250, 0.2);
}

.exp-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 8px;
}

.exp-company {
    font-size: 24px;
    font-weight: bold;
    color: #60a5fa;
}

.exp-role {
    color: #cbd5e1;
    font-size: 16px;
}

.exp-period {
    font-size: 14px;
    color: #94a3b8;
}

.exp-desc {
    color: #cbd5e1;
    margin-top: 12px;
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 24px;
}

.project-card {
    background: rgba(71, 85, 105, 0.3);
    padding: 24px;
    border-radius: 8px;
    border: 1px solid #475569;
    transition: all 0.3s;
    text-decoration: none;
    color: inherit;
    display: block;
}

.project-card:hover {
    border-color: #60a5fa;
    box-shadow: 0 0 20px rgba(96, 165, 250, 0.2);
}

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

.project-title {
    font-size: 20px;
    font-weight: bold;
}

.project-card:hover .project-title {
    color: #60a5fa;
}

.project-desc {
    font-size: 14px;
    color: #94a3b8;
}

.tech-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 16px;
}

.tech-tag {
    background: rgba(59, 130, 246, 0.2);
    color: #60a5fa;
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 12px;
}

.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 32px;
}

.skill-category {
    background: rgba(71, 85, 105, 0.3);
    padding: 24px;
    border-radius: 8px;
    border: 1px solid #475569;
}

.skill-title {
    font-size: 20px;
    font-weight: bold;
    color: #60a5fa;
    margin-bottom: 16px;
}

.skill-items {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.skill-item {
    background: #475569;
    padding: 8px 16px;
    border-radius: 20px;
    font-size: 14px;
    transition: all 0.3s;
}

.skill-item:hover {
    background: #3b82f6;
}

.contact-section {
    text-align: center;
}

.contact-text {
    font-size: 18px;
    color: #cbd5e1;
    margin-bottom: 32px;
}

.contact-buttons {
    display: flex;
    justify-content: center;
    gap: 16px;
    flex-wrap: wrap;
}

.contact-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 24px;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s;
    background: #3b82f6;
    color: white;
    border: 2px solid #3b82f6;
}

.contact-btn:hover {
    background: transparent;
    color: #60a5fa;
}

footer {
    border-top: 1px solid #334155;
    padding: 32px 20px;
    text-align: center;
    color: #94a3b8;
}

@media (max-width: 768px) {
    .hero h1 {
        font-size: 36px;
    }

    .hero p {
        font-size: 16px;
    }

    h2 {
        font-size: 28px;
    }

    .exp-header {
        flex-direction: column;
    }

    .button-group {
        flex-direction: column;
    }

    .btn {
        width: 100%;
    }

    .lang-switcher {
        display: none;
    }

    .lang-switcher-mobile {
        display: flex;
        gap: 6px;
        justify-content: center;
        padding-top: 8px;
        border-top: 1px solid #334155;
        margin-top: 8px;
    }

    .lang-switcher-mobile button {
        background: none;
        border: 2px solid transparent;
        border-radius: 4px;
        cursor: pointer;
        font-size: 1.3rem;
        padding: 2px 6px;
        line-height: 1;
        transition: border-color 0.3s;
    }

    .lang-switcher-mobile button.active {
        border-color: #60a5fa;
    }
}

.lang-switcher {
    display: flex;
    gap: 6px;
    margin-left: 16px;
}

.lang-switcher button {
    background: none;
    border: 2px solid transparent;
    border-radius: 4px;
    cursor: pointer;
    font-size: 1.3rem;
    padding: 2px 6px;
    line-height: 1;
    transition: border-color 0.3s;
}

.lang-switcher button.active {
    border-color: #60a5fa;
}