:root {
    /* Dark Mode variables (default) */
    --bg-color: #121212;
    --text-color: #e0e0e0;
    --accent-color: #00ffcc;
    --secondary-accent: #ff00ff;
    --card-bg: #1e1e1e;
    --card-border: #333;
    --terminal-header: #2d2d2d;
    --nav-bg: rgba(18, 18, 18, 0.95);
    
    /* Typography */
    --font-mono: 'Fira Code', monospace;
    --font-sans: 'Inter', sans-serif;
    
    /* JSON Highlighting */
    --json-key: #569cd6;
    --json-string: #ce9178;
}

[data-theme="light"] {
    /* Light Mode variables */
    --bg-color: #f5f5f5;
    --text-color: #333333;
    --accent-color: #007acc;
    --secondary-accent: #d32f2f;
    --card-bg: #ffffff;
    --card-border: #cccccc;
    --terminal-header: #e0e0e0;
    --nav-bg: rgba(245, 245, 245, 0.95);
    
    /* JSON Highlighting */
    --json-key: #001080;
    --json-string: #a31515;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-sans);
    background-color: var(--bg-color);
    color: var(--text-color);
    line-height: 1.6;
    transition: background-color 0.3s ease, color 0.3s ease;
}

/* Nav */
#navbar {
    position: fixed;
    top: 0;
    width: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 2rem;
    background-color: var(--nav-bg);
    backdrop-filter: blur(5px);
    z-index: 1000;
    border-bottom: 1px solid var(--accent-color);
    font-family: var(--font-mono);
}

.nav-links {
    display: flex;
    gap: 1.5rem;
}

.nav-item {
    color: var(--text-color);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.2s;
}

.nav-item:hover {
    color: var(--accent-color);
}

#theme-toggle {
    background: none;
    border: none;
    color: var(--accent-color);
    font-family: var(--font-mono);
    cursor: pointer;
    font-size: 1rem;
    font-weight: bold;
}

#theme-toggle:hover {
    color: var(--secondary-accent);
}

/* Sections */
section {
    padding: 6rem 2rem 4rem 2rem;
    max-width: 1000px;
    margin: 0 auto;
}

.section-title {
    font-family: var(--font-mono);
    color: var(--accent-color);
    margin-bottom: 2rem;
    font-size: 1.8rem;
}

.fullscreen-section {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* Terminal Hero */
.terminal-container {
    background-color: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 8px;
    width: 100%;
    max-width: 800px;
    overflow: hidden;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.5);
}

.terminal-header {
    background-color: var(--terminal-header);
    padding: 10px;
    display: flex;
    gap: 8px;
}

.terminal-header .btn {
    width: 12px;
    height: 12px;
    border-radius: 50%;
}

.btn.close { background-color: #ff5f56; }
.btn.minimize { background-color: #ffbd2e; }
.btn.expand { background-color: #27c93f; }

.terminal-body {
    padding: 2rem;
    font-family: var(--font-mono);
}

.prompt {
    color: var(--accent-color);
    margin-bottom: 1rem;
}

.typing-effect {
    font-size: 2rem;
    margin-bottom: 0.5rem;
}

.cursor {
    animation: blink 1s step-end infinite;
}

@keyframes blink {
    0%, 100% { opacity: 1; }
    50% { opacity: 0; }
}

.role-text {
    font-size: 1.2rem;
    color: #888;
    margin-bottom: 2rem;
    font-weight: 400;
}

.social-links a {
    color: var(--accent-color);
    text-decoration: none;
    margin-right: 1.5rem;
    transition: color 0.2s;
}

.social-links a:hover {
    color: var(--secondary-accent);
}

/* About Section */
.about-content p {
    font-size: 1.1rem;
    margin-bottom: 1rem;
}

/* Grid Layouts */
.grid-layout {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.card {
    background-color: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 8px;
    padding: 1.5rem;
    transition: transform 0.2s, box-shadow 0.2s, border-color 0.2s;
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.3);
    border-color: var(--accent-color);
}

.card-header {
    margin-bottom: 1rem;
}

.card-header h3 {
    font-size: 1.4rem;
    margin-bottom: 0.25rem;
    font-family: var(--font-mono);
}

.project-link {
    color: var(--text-color);
    text-decoration: none;
}

.project-link:hover {
    color: var(--accent-color);
}

.card .date {
    font-family: var(--font-mono);
    color: #888;
    font-size: 0.9rem;
}

.card h4 {
    margin-bottom: 1rem;
    font-weight: 500;
    color: var(--accent-color);
}

.card p {
    margin-bottom: 1.5rem;
}

.tech-stack {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.tech-stack code {
    font-family: var(--font-mono);
    background-color: var(--bg-color);
    color: var(--accent-color);
    padding: 0.2rem 0.6rem;
    border-radius: 4px;
    font-size: 0.85rem;
    border: 1px solid var(--card-border);
}

/* Skills Section */
.skills-container {
    background-color: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 8px;
    padding: 2rem;
    overflow-x: auto;
}

.json-code {
    font-family: var(--font-mono);
    font-size: 1rem;
    line-height: 1.8;
}

.json-key { color: var(--json-key); }
.json-string { color: var(--json-string); }

/* Contact Section */
.contact-info {
    text-align: center;
    background-color: var(--card-bg);
    padding: 3rem 2rem;
    border-radius: 8px;
    border: 1px solid var(--card-border);
}

.contact-links {
    margin-top: 2rem;
    display: flex;
    justify-content: center;
    gap: 1.5rem;
    flex-wrap: wrap;
}

.button-link {
    display: inline-block;
    padding: 0.8rem 1.5rem;
    border: 1px solid var(--accent-color);
    color: var(--accent-color);
    text-decoration: none;
    font-family: var(--font-mono);
    border-radius: 4px;
    transition: all 0.2s;
}

.button-link:hover {
    background-color: var(--accent-color);
    color: var(--bg-color);
}

footer {
    text-align: center;
    padding: 2rem;
    font-family: var(--font-mono);
    color: #888;
    border-top: 1px dashed var(--card-border);
}

/* Responsive */
@media (max-width: 768px) {
    #navbar {
        flex-direction: column;
        padding: 1rem;
    }
    
    .nav-links {
        margin-bottom: 1rem;
        flex-wrap: wrap;
        justify-content: center;
    }
    
    .typing-effect {
        font-size: 1.5rem;
    }
    
    .role-text {
        font-size: 1rem;
    }
    
    section {
        padding-top: 8rem;
    }
}