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

:root {
    --primary-bg: #0a0a0a;
    --secondary-bg: #1a1a1a;
    --card-bg: #252525;
    --accent: #00ff88;
    --accent-dim: #00cc6a;
    --text-primary: #ffffff;
    --text-secondary: #a0a0a0;
    --text-dim: #666666;
    --border: #333333;
    --warning: #ffaa00;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen', 'Ubuntu', 'Cantarell', sans-serif;
    background-color: var(--primary-bg);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
}

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

/* Header */
header {
    text-align: center;
    padding: 4rem 0 3rem;
    border-bottom: 2px solid var(--border);
    margin-bottom: 3rem;
    position: relative;
}

header::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 50%;
    transform: translateX(-50%);
    width: 100px;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--accent), transparent);
    animation: shimmer 2s infinite;
}

@keyframes shimmer {
    0%, 100% { opacity: 0.5; }
    50% { opacity: 1; }
}

h1 {
    font-size: 3.5rem;
    font-weight: 800;
    margin-bottom: 0.5rem;
    background: linear-gradient(135deg, var(--accent) 0%, var(--text-primary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.subtitle {
    font-size: 1.25rem;
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
}

.disclaimer {
    font-size: 0.875rem;
    color: var(--text-dim);
    font-style: italic;
}

/* Intro Section */
.intro {
    background-color: var(--secondary-bg);
    padding: 2rem;
    border-radius: 8px;
    border-left: 4px solid var(--accent);
    margin-bottom: 3rem;
}

.intro p {
    color: var(--text-secondary);
    font-size: 1.1rem;
}

/* Projects Grid */
.projects {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 2rem;
    margin-bottom: 4rem;
}

.project-card {
    background-color: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 2rem;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.project-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(90deg, var(--accent), var(--accent-dim));
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.3s ease;
}

.project-card:hover::before {
    transform: scaleX(1);
}

.project-card:hover {
    transform: translateY(-4px);
    border-color: var(--accent);
    box-shadow: 0 8px 24px rgba(0, 255, 136, 0.1);
}

.project-card.placeholder {
    opacity: 0.5;
    border-style: dashed;
}

.project-card.placeholder:hover {
    transform: none;
    border-color: var(--border);
    box-shadow: none;
}

.project-number {
    font-size: 0.875rem;
    color: var(--accent);
    font-weight: 700;
    letter-spacing: 0.1em;
    margin-bottom: 1rem;
}

.project-title {
    font-size: 1.5rem;
    margin-bottom: 0.75rem;
    color: var(--text-primary);
}

.project-description {
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
    font-size: 0.95rem;
}

.project-meta {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
    margin-bottom: 1.5rem;
}

.tech-tag {
    background-color: var(--secondary-bg);
    color: var(--text-secondary);
    padding: 0.25rem 0.75rem;
    border-radius: 4px;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.project-link {
    display: inline-block;
    color: var(--accent);
    text-decoration: none;
    font-weight: 600;
    transition: all 0.2s ease;
}

.project-link:hover {
    color: var(--text-primary);
    transform: translateX(4px);
}

.project-card.placeholder .project-link {
    display: none;
}

/* Footer */
footer {
    text-align: center;
    padding: 3rem 0 2rem;
    border-top: 1px solid var(--border);
    color: var(--text-dim);
}

footer p {
    margin-bottom: 0.5rem;
}

.footer-note {
    font-size: 0.875rem;
    font-style: italic;
}

/* Responsive */
@media (max-width: 768px) {
    .container {
        padding: 1rem;
    }

    h1 {
        font-size: 2.5rem;
    }

    .subtitle {
        font-size: 1rem;
    }

    .projects {
        grid-template-columns: 1fr;
    }

    header {
        padding: 2rem 0 2rem;
    }
}

/* Loading animation for future dynamic content */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.project-card {
    animation: fadeIn 0.5s ease forwards;
}

.project-card:nth-child(1) { animation-delay: 0.1s; }
.project-card:nth-child(2) { animation-delay: 0.2s; }
.project-card:nth-child(3) { animation-delay: 0.3s; }
.project-card:nth-child(4) { animation-delay: 0.4s; }
.project-card:nth-child(5) { animation-delay: 0.5s; }
.project-card:nth-child(6) { animation-delay: 0.6s; }