/* CSS Variables for Themes */
:root {
    --bg-primary: #11383f;
    --bg-secondary: #050505;
    --text-primary: #ffffff;
    --text-secondary: #cccccc;
    --accent: #00d4ff;
    --glass-bg: rgba(70, 67, 67, 0.1);
    --glass-border: rgba(255, 252, 252, 0.2);
    --shadow: 0 8px 32px rgba(255, 255, 255, 0.3);
}

[data-theme="light"] {
    --bg-primary: #f5f5f5;
    --bg-secondary: #ffffff;
    --text-primary: #000000;
    --text-secondary: #666666;
    --accent: #509beb;
    --glass-bg: rgba(0, 0, 0, 0.05);
    --glass-border: rgba(0, 0, 0, 0.1);
    --shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
}

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

body {
    font-family: 'Poppins', sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
    transition: background-color 0.3s ease, color 0.3s ease;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Navbar */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--glass-border);
    z-index: 1000;
    transition: all 0.3s ease;
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 2rem;
}

.logo {
    font-family: 'Roboto', sans-serif;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--accent);
}

.nav-links {
    display: flex;
    list-style: none;
}

.nav-links li {
    margin-left: 2rem;
}

.nav-link {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s ease;
}

.nav-link:hover, .nav-link.active {
    color: var(--accent);
}

.theme-toggle {
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--text-primary);
}

.hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
}

.hamburger span {
    width: 25px;
    height: 3px;
    background: var(--text-primary);
    margin: 3px 0;
    transition: 0.3s;
}

/* Hero */
.hero {
    display: flex;
    align-items: center;
    justify-content: space-between;
    min-height: 100vh;
    padding: 5rem 2rem;
    background: linear-gradient(135deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
}

.hero-content {
    flex: 1;
    animation: fadeInUp 1s ease-out;
}

.hero-title {
    font-family: 'Roboto', sans-serif;
    font-size: 3rem;
    margin-bottom: 0.5rem;
}

.hero-subtitle {
    font-size: 1.5rem;
    color: var(--accent);
    margin-bottom: 1rem;
}

.hero-intro {
    font-size: 1.2rem;
    margin-bottom: 2rem;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
}

.btn {
    padding: 0.75rem 1.5rem;
    text-decoration: none;
    border-radius: 50px;
    font-weight: 600;
    transition: all 0.3s ease;
    display: inline-block;
}

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

.primary-btn:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow);
}

.secondary-btn {
    border: 2px solid var(--accent);
    color: var(--accent);
}

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

.hero-image {
    flex: 1;
    text-align: center;
    animation: fadeInRight 1s ease-out;
}

.profile-img {
    width: 300px;
    height: 300px;
    border-radius: 50%;
    object-fit: cover;
    border: 5px solid var(--glass-border);
}

/* Sections */
.section {
    padding: 5rem 0;
    background: var(--bg-secondary);
    backdrop-filter: blur(10px);
}

.section-title {
    font-family: 'Roboto', sans-serif;
    font-size: 2.5rem;
    text-align: center;
    margin-bottom: 2rem;
    color: var(--accent);
}

/* About */
.about-content {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
    animation: fadeIn 1s ease-out;
}

/* Skills */
.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
    animation: fadeIn 1s ease-out;
}

.skill-item {
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    border: 1px solid var(--glass-border);
    padding: 1.5rem;
    border-radius: 15px;
    text-align: center;
    transition: transform 0.3s ease;
}

.skill-item:hover {
    transform: translateY(-10px);
}

.progress-bar {
    background: var(--bg-primary);
    border-radius: 10px;
    height: 10px;
    margin-top: 1rem;
    overflow: hidden;
}

.progress {
    height: 100%;
    background: var(--accent);
    border-radius: 10px;
    transition: width 1s ease;
}

/* Projects */
.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    animation: fadeIn 1s ease-out;
}

.project-card {
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    border: 1px solid var(--glass-border);
    border-radius: 15px;
    overflow: hidden;
    transition: transform 0.3s ease;
}

.project-card:hover {
    transform: translateY(-10px);
}

.project-img {
    width: 100%;
    height: 200px;
    object-fit: cover;
}

.project-card h3 {
    padding: 1rem;
    font-size: 1.5rem;
}

.project-card p {
    padding: 0 1rem;
    color: var(--text-secondary);
}

.small-btn {
    margin: 1rem;
    padding: 0.5rem 1rem;
    font-size: 0.9rem;
}

/* Education */
.education-item {
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    border: 1px solid var(--glass-border);
    padding: 2rem;
    border-radius: 15px;
    text-align: center;
    animation: fadeIn 1s ease-out;
}

/* Contact */
.contact-info {
    text-align: center;
    margin-bottom: 2rem;
    animation: fadeIn 1s ease-out;
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    max-width: 500px;
    margin: 0 auto;
}

.contact-form input, .contact-form textarea {
    padding: 0.75rem;
    border: 1px solid var(--glass-border);
    border-radius: 10px;
    background: var(--glass-bg);
    color: var(--text-primary);
}

/* Footer */
.footer {
    background: var(--bg-secondary);
    padding: 2rem 0;
    text-align: center;
}

.social-links {
    margin-top: 1rem;
}

.social-links a {
    margin: 0 0.5rem;
    font-size: 1.5rem;
    color: var(--accent);
}

/* Animations */
@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

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

@keyframes fadeInRight {
    from { opacity: 0; transform: translateX(30px); }
    to { opacity: 1; transform: translateX(0); }
}

/* Responsive */
@media (max-width: 768px) {
  .navbar {
    position: relative;
  }

  .nav-links {
    display: none;
    flex-direction: column;
    position: absolute;
    top: 100%;
    left: 0;
    width: 100%;
    background: var(--bg-secondary);
    padding: 1rem;
  }

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