:root {
    --primary: #4f46e5;
    --secondary: #06b6d4;
    --dark: #0f172a;
    --darker: #020617;
    --light: #f8fafc;
    --gray: #94a3b8;
}

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

body {
    font-family: 'Inter', sans-serif;
    background: var(--dark);
    color: var(--light);
    line-height: 1.7;
}

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

/* Navigation */
nav {
    background-color: rgba(2, 6, 23, 0.95);
    backdrop-filter: blur(10px);
    position: fixed;
    width: 100%;
    z-index: 1000;
    padding: 1rem 0;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.2);
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-weight: 700;
    font-size: 1.8rem;
    background: linear-gradient(to right, var(--primary), var(--secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    text-decoration: none;
}

.nav-links {
    display: flex;
    gap: 2rem;
}

.nav-links a {
    color: var(--gray);
    text-decoration: none;
    font-weight: 500;
    transition: all 0.3s;
}

.nav-links a:hover, .nav-links a.active {
    color: var(--light);
}

.hamburger {
    display: none;
    cursor: pointer;
    background: none;
    border: none;
    color: var(--light);
    font-size: 1.5rem;
}

/* Header */
header {
    background: linear-gradient(135deg, var(--darker), #1e1b4b);
    padding-top: 100px;
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
}

.header-content {
    text-align: center;
    padding: 2rem;
    z-index: 2;
}

.profile-img {
    width: 180px;
    height: 180px;
    border-radius: 50%;
    border: 4px solid var(--secondary);
    box-shadow: 0 0 25px rgba(6, 182, 212, 0.5);
    margin-bottom: 2rem;
    object-fit: cover;
    animation: pulse 3s infinite;
}

@keyframes pulse {
    0% {
        box-shadow: 0 0 0 0 rgba(6, 182, 212, 0.7);
    }
    70% {
        box-shadow: 0 0 0 15px rgba(6, 182, 212, 0);
    }
    100% {
        box-shadow: 0 0 0 0 rgba(6, 182, 212, 0);
    }
}

.header-title {
    font-size: 3rem;
    font-weight: 800;
    background: linear-gradient(to right, var(--secondary), #38bdf8);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-bottom: 1rem;
}

.header-subtitle {
    font-size: 1.5rem;
    color: var(--gray);
    margin-bottom: 2rem;
}

.social-icons {
    display: flex;
    justify-content: center;
    gap: 1.5rem;
    margin: 2rem 0;
}

.social-icons a {
    color: var(--light);
    font-size: 1.5rem;
    transition: all 0.3s;
    width: 45px;
    height: 45px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.05);
    display: flex;
    align-items: center;
    justify-content: center;
}

.social-icons a:hover {
    color: var(--secondary);
    transform: translateY(-5px);
}

.btn {
    display: inline-block;
    padding: 0.8rem 2rem;
    background: transparent;
    color: var(--secondary);
    border: 2px solid var(--secondary);
    border-radius: 30px;
    font-weight: 600;
    text-decoration: none;
    margin: 0.5rem;
    transition: all 0.3s;
}

.btn:hover {
    background: var(--secondary);
    color: var(--dark);
}

/* Sections */
section {
    padding: 5rem 0;
}

.section-title {
    font-size: 2.5rem;
    text-align: center;
    margin-bottom: 3rem;
    color: var(--light);
    font-weight: 700;
    position: relative;
}

.section-title:after {
    content: '';
    position: absolute;
    left: 50%;
    bottom: -15px;
    transform: translateX(-50%);
    width: 60px;
    height: 4px;
    background: var(--secondary);
}

/* Cards */
.card {
    background: rgba(30, 41, 59, 0.8);
    border-radius: 15px;
    padding: 2rem;
    margin-bottom: 2rem;
    transition: transform 0.3s, box-shadow 0.3s;
}

.card:hover {
    transform: translateY(-10px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
}

/* Grid layouts */
.grid {
    display: grid;
    gap: 2rem;
}

.grid-2 {
    grid-template-columns: repeat(2, 1fr);
}

.grid-3 {
    grid-template-columns: repeat(3, 1fr);
}

/* Form styling */
.input-group {
    margin-bottom: 1.5rem;
}

input, textarea {
    width: 100%;
    padding: 1rem;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 8px;
    color: var(--light);
    font-family: inherit;
}

/* Responsive */
@media (max-width: 992px) {
    .grid-3 {
        grid-template-columns: repeat(2, 1fr);
    }
    .grid-2 {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .header-title {
        font-size: 2.5rem;
    }
    .grid-3 {
        grid-template-columns: 1fr;
    }
    
    .nav-links {
        position: fixed;
        top: 0;
        right: -100%;
        width: 70%;
        height: 100vh;
        background: var(--darker);
        flex-direction: column;
        align-items: center;
        padding-top: 5rem;
        transition: right 0.5s;
    }
    
    .nav-links.show {
        right: 0;
    }
    
    .hamburger {
        display: block;
    }
}

/* Animation */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s, transform 0.8s;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}