:root {
    --primary: #2563eb;
    --accent: #f59e42;
    --bg: #f8fafc;
    --text: #22223b;
    --card-bg: #fff;
    --shadow: 0 2px 8px rgba(0,0,0,0.07);
}
*{
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}
body {
    font-family: 'Segoe UI', Arial, sans-serif;
    margin: 0;
    padding: 0;
    background: var(--bg);
    color: var(--text);
    box-sizing: border-box;
}

header {
    background: var(--primary);
    color: #fff;
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
    box-shadow: var(--shadow);
}

nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    max-width: 1100px;
    margin: auto;
    padding: 0.5rem 1.5rem;
}

.logo {
    font-weight: bold;
    font-size: 1.3rem;
    letter-spacing: 2px;
}

.nav-links {
    display: flex;
    gap: 1.5rem;
    list-style: none;
    margin: 0;
    padding: 0;
}

.nav-links a {
    color: #fff;
    text-decoration: none;
    font-weight: 500;
    padding: 0.5rem 1rem;
    border-radius: 4px;
    transition: background 0.2s;
}

.nav-links a:hover {
    background: var(--accent);
    color: #fff;
}

.hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
    gap: 5px;
    background: var(--card-bg);
    border: none;
    padding: 8px;
    border-radius: 6px;
    box-shadow: var(--shadow);
}

.hamburger span {
    width: 25px;
    height: 3px;
    background: #22223b;
    border-radius: 2px;
    display: block;
}

.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(120deg, #2563eb 0%, #f59e42 100%);
    padding-top: 80px;
}

.hero-content {
    display: flex;
    align-items: center;
    gap: 2.5rem;
    background: rgba(255,255,255,0.95);
    padding: 2.5rem 2rem;
    border-radius: 18px;
    box-shadow: var(--shadow);
    flex-wrap: wrap;
}

.hero-photo img {
    width: 160px;
    height: 160px;
    object-fit: cover;
    border-radius: 50%;
    border: 4px solid var(--primary);
    box-shadow: var(--shadow);
    background: #fff;
}

.hero-content h1 {
    font-size: 2.7rem;
    margin: 0 0 0.5rem 0;
    color: var(--primary);
}

.hero-content p {
    font-size: 1.3rem;
    margin-bottom: 1.2rem;
}

.cta-button {
    display: inline-block;
    background: var(--primary);
    color: #fff;
    padding: 0.7rem 2rem;
    border-radius: 6px;
    font-weight: 600;
    text-decoration: none;
    box-shadow: var(--shadow);
    transition: background 0.2s;
}

.cta-button:hover {
    background: var(--accent);
    color: #fff;
}

section {
    margin-top: 60px;
    padding: 2.5rem 1rem;
    max-width: 900px;
    margin-left: auto;
    margin-right: auto;
    background: var(--card-bg);
    border-radius: 14px;
    box-shadow: var(--shadow);
}

.about h2, .skills h2, .contact h2 {
    font-size: 2rem;
    color: var(--primary);
    margin-bottom: 1rem;
}

.about ul {
    margin: 1rem 0;
    padding-left: 1.2rem;
}

.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(130px, 1fr));
    gap: 1rem;
    margin-top: 1.5rem;
}

.skill-card {
    background: linear-gradient(120deg, #f8fafc 60%, #e0e7ff 100%);
    color: var(--primary);
    font-weight: 600;
    padding: 1rem;
    border-radius: 8px;
    text-align: center;
    box-shadow: var(--shadow);
    transition: transform 0.2s;
}

.skill-card:hover {
    transform: translateY(-4px) scale(1.04);
    background: linear-gradient(120deg, #f59e42 60%, #2563eb 100%);
    color: #fff;
}

.contact {
    text-align: center;
}

.social-links {
    margin-top: 1rem;
    display: flex;
    justify-content: center;
    gap: 1.5rem;
}

.social-icon {
    background: var(--primary);
    color: #fff;
    padding: 0.6rem 1.2rem;
    border-radius: 6px;
    text-decoration: none;
    font-weight: 500;
    transition: background 0.2s;
}

.social-icon:hover {
    background: var(--accent);
    color: #fff;
}

footer {
    background: var(--primary);
    color: #fff;
    text-align: center;
    padding: 1rem;
    position: relative;
    bottom: 0;
    width: 100%;
    font-size: 1rem;
    margin-top: 40px;
    border-radius: 0 0 14px 14px;
}

.stack-card {
    background: linear-gradient(120deg, #f8fafc 60%, #e0e7ff 100%);
    border-radius: 10px;
    box-shadow: var(--shadow);
    padding: 1rem 1.2rem;
    min-width: 180px;
    flex: 1 1 180px;
}
.stack-card strong {
    color: var(--primary);
    font-size: 1.1rem;
    display: block;
    margin-bottom: 0.5rem;
}
.stack-card ul {
    margin: 0;
    padding-left: 1.2rem;
    font-size: 1rem;
}

@media (max-width: 900px) {
    .hero-content {
        flex-direction: column;
        gap: 1.5rem;
        padding: 2rem 1rem;
    }
    section {
        padding: 2rem 0.5rem;
    }
}

@media (max-width: 700px) {
    nav {
        padding: 0.5rem 0.5rem;
    }
    .logo {
        font-size: 1rem;
    }
    .hero-content h1 {
        font-size: 2rem;
    }
    .hero-content p {
        font-size: 1rem;
    }
    .skills-grid {
        grid-template-columns: repeat(auto-fit, minmax(110px, 1fr));
    }
}

@media (max-width: 600px) {
    .nav-links {
        position: absolute;
        top: 60px;
        right: 0;
        background: var(--primary);
        flex-direction: column;
        width: 180px;
        display: none;
        box-shadow: var(--shadow);
        border-radius: 0 0 10px 10px;
        z-index: 999;
    }
    .nav-links.active {
        display: flex;
    }
    .hamburger {
        display: flex;
    }
    .hero-content {
        padding: 1.2rem 0.5rem;
    }
    section {
        padding: 1.2rem 0.2rem;
    }
}