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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: #e0e0e0;
    background: linear-gradient(135deg, #1a1a2e 0%, #16213e 100%);
    background-attachment: fixed;
}

.main-wrapper {
    background: #1e1e1e;
    min-height: 100vh;
    max-width: 1200px;
    margin: 0 auto;
    box-shadow: 0 0 50px rgba(0,0,0,0.5);
}

header {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 3rem 2rem;
    text-align: center;
}

header h1 {
    font-size: 2.5rem;
    margin-bottom: 0.5rem;
}

header .subtitle {
    font-size: 1.2rem;
    opacity: 0.95;
    margin-bottom: 1rem;
}

header .emoji-line {
    font-size: 1.5rem;
    margin-top: 1rem;
}

nav {
    background: #2c2c2c;
    padding: 1rem;
    text-align: center;
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: 0 2px 5px rgba(0,0,0,0.5);
}

nav a {
    color: white;
    margin: 0 1rem;
    text-decoration: none;
    padding: 0.5rem 1rem;
    border-radius: 5px;
    transition: background 0.3s;
}

nav a:hover {
    background: #667eea;
}

.container {
    max-width: 1000px;
    margin: 0 auto;
    padding: 2rem 2rem;
}

.section {
    margin-bottom: 3rem;
    animation: fadeIn 1s;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

.section h2 {
    color: #667eea;
    margin-bottom: 1.5rem;
    font-size: 2rem;
    border-bottom: 3px solid #667eea;
    padding-bottom: 0.5rem;
}

.intro-text {
    font-size: 1.1rem;
    color: #b0b0b0;
    margin-bottom: 1.5rem;
}

.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
    margin-top: 1.5rem;
}

.skill-card {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 1.5rem;
    border-radius: 10px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
    transition: transform 0.3s;
}

.skill-card:hover {
    transform: translateY(-5px);
}

.skill-card h3 {
    margin-bottom: 0.5rem;
    font-size: 1.3rem;
}

.project {
    background: #2a2a2a;
    padding: 1.5rem;
    margin-bottom: 1.5rem;
    border-radius: 10px;
    border-left: 5px solid #667eea;
    box-shadow: 0 2px 5px rgba(0,0,0,0.3);
    transition: transform 0.3s, box-shadow 0.3s;
}

.project:hover {
    transform: translateX(10px);
    box-shadow: 0 4px 10px rgba(102,126,234,0.3);
}

.project h3 {
    color: #667eea;
    margin-bottom: 0.5rem;
}

.tech-tags {
    margin-top: 1rem;
}

.tag {
    display: inline-block;
    background: #667eea;
    color: white;
    padding: 0.3rem 0.8rem;
    border-radius: 15px;
    font-size: 0.85rem;
    margin-right: 0.5rem;
    margin-top: 0.5rem;
}

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

.connect-btn {
    display: inline-block;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 1rem 2rem;
    text-decoration: none;
    border-radius: 30px;
    font-weight: bold;
    transition: transform 0.3s, box-shadow 0.3s;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
}

.connect-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 12px rgba(0,0,0,0.2);
}

footer {
    background: #1a1a1a;
    color: white;
    text-align: center;
    padding: 2rem;
}

footer p {
    margin-bottom: 0.5rem;
}

ul {
    list-style-position: inside;
    margin-left: 1rem;
}

li {
    margin-bottom: 0.5rem;
}

/* Theme Toggle Switch */
.theme-toggle {
    position: absolute;
    top: 1.5rem;
    right: 2rem;
    display: flex;
    align-items: center;
    gap: 1rem;
}

.toggle-label {
    font-size: 0.9rem;
    font-weight: 500;
}

.retro-btn {
    background: rgba(255, 255, 255, 0.2);
    border: 2px solid rgba(255, 255, 255, 0.5);
    color: white;
    padding: 0.4rem 1rem;
    border-radius: 5px;
    cursor: pointer;
    font-size: 0.9rem;
    font-weight: 600;
    transition: all 0.3s;
}

.retro-btn:hover {
    background: rgba(255, 255, 255, 0.3);
    transform: scale(1.05);
}

.retro-btn.active {
    background: #00ff00;
    color: #000;
    border-color: #00ff00;
    box-shadow: 0 0 15px #00ff00;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% { box-shadow: 0 0 15px #00ff00; }
    50% { box-shadow: 0 0 25px #00ff00; }
}

.switch {
    position: relative;
    display: inline-block;
    width: 50px;
    height: 24px;
}

.switch input {
    opacity: 0;
    width: 0;
    height: 0;
}

.slider {
    position: absolute;
    cursor: pointer;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(255, 255, 255, 0.3);
    transition: 0.4s;
    border-radius: 24px;
}

.slider:before {
    position: absolute;
    content: "";
    height: 18px;
    width: 18px;
    left: 3px;
    bottom: 3px;
    background-color: white;
    transition: 0.4s;
    border-radius: 50%;
}

input:checked + .slider {
    background-color: #00ff00;
}

input:checked + .slider:before {
    transform: translateX(26px);
}

header {
    position: relative;
}

/* Terminal Mode Theme */
body.terminal-mode {
    font-family: 'Courier New', 'Consolas', 'Monaco', monospace;
    background: #000000;
    color: #00ff00;
}

body.terminal-mode .main-wrapper {
    background: #000000;
    box-shadow: 0 0 50px rgba(0, 255, 0, 0.3);
}

body.terminal-mode header {
    background: #000000;
    border-bottom: 2px solid #00ff00;
}

body.terminal-mode nav {
    background: #000000;
    border-bottom: 1px solid #00ff00;
}

body.terminal-mode nav a {
    color: #00ff00;
    border: 1px solid transparent;
}

body.terminal-mode nav a:hover {
    background: transparent;
    border: 1px solid #00ff00;
    text-decoration: none;
}

body.terminal-mode .section h2 {
    color: #00ff00;
    border-bottom: 3px solid #00ff00;
    text-shadow: 0 0 10px #00ff00;
}

body.terminal-mode .intro-text {
    color: #00ff00;
}

body.terminal-mode .intro-text strong {
    color: #00ff00;
    text-shadow: 0 0 5px #00ff00;
}

body.terminal-mode .skills-grid .skill-card {
    background: #000000;
    border: 2px solid #00ff00;
    color: #00ff00;
}

body.terminal-mode .skill-card:hover {
    box-shadow: 0 0 20px rgba(0, 255, 0, 0.5);
}

body.terminal-mode .project {
    background: #000000;
    border: 1px solid #00ff00;
    border-left: 5px solid #00ff00;
    box-shadow: 0 0 10px rgba(0, 255, 0, 0.2);
}

body.terminal-mode .project:hover {
    box-shadow: 0 0 20px rgba(0, 255, 0, 0.5);
}

body.terminal-mode .project h3 {
    color: #00ff00;
    text-shadow: 0 0 5px #00ff00;
}

body.terminal-mode .project p {
    color: #00ff00;
}

body.terminal-mode .tag {
    background: #000000;
    border: 1px solid #00ff00;
    color: #00ff00;
}

body.terminal-mode .connect-btn {
    background: #000000;
    border: 2px solid #00ff00;
    color: #00ff00;
    box-shadow: 0 0 10px rgba(0, 255, 0, 0.3);
}

body.terminal-mode .connect-btn:hover {
    background: #00ff00;
    color: #000000;
    box-shadow: 0 0 20px rgba(0, 255, 0, 0.7);
}

body.terminal-mode footer {
    background: #000000;
    border-top: 2px solid #00ff00;
    color: #00ff00;
}

body.terminal-mode h3 {
    color: #00ff00;
}

/* Retro Terminal Effects */
body.retro-effects::before {
    content: "";
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: repeating-linear-gradient(
        0deg,
        rgba(0, 0, 0, 0.08),
        rgba(0, 0, 0, 0.08) 1px,
        transparent 1px,
        transparent 2px
    );
    pointer-events: none;
    z-index: 9999;
    animation: scanlines 10s linear infinite;
}

@keyframes scanlines {
    0% { transform: translateY(0); }
    100% { transform: translateY(10px); }
}

body.retro-effects::after {
    content: "";
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(ellipse at center, rgba(0, 255, 0, 0) 0%, rgba(0, 255, 0, 0.05) 100%);
    pointer-events: none;
    z-index: 9998;
    animation: flicker 0.15s infinite;
}

@keyframes flicker {
    0% { opacity: 0.98; }
    50% { opacity: 1; }
    100% { opacity: 0.98; }
}

body.retro-effects.terminal-mode * {
    text-shadow: 0 0 3px #00ff00, 0 0 6px #00ff00;
}

body.retro-effects .main-wrapper {
    animation: screenGlow 3s ease-in-out infinite;
}

@keyframes screenGlow {
    0%, 100% { filter: brightness(1); }
    50% { filter: brightness(1.05); }
}

body.retro-effects.terminal-mode .section h2,
body.retro-effects.terminal-mode .project h3 {
    animation: textGlow 2s ease-in-out infinite;
}

@keyframes textGlow {
    0%, 100% { 
        text-shadow: 0 0 3px #00ff00, 0 0 6px #00ff00;
    }
    50% { 
        text-shadow: 0 0 6px #00ff00, 0 0 10px #00ff00, 0 0 15px #00ff00;
    }
}

body.retro-effects.terminal-mode .skill-card,
body.retro-effects.terminal-mode .project {
    animation: borderGlow 3s ease-in-out infinite;
}

@keyframes borderGlow {
    0%, 100% { 
        box-shadow: 0 0 8px rgba(0, 255, 0, 0.2);
    }
    50% { 
        box-shadow: 0 0 12px rgba(0, 255, 0, 0.3);
    }
}