:root {
    --bg-color: #f8f9fa;
    --text-color: #212529;
    --card-bg: #ffffff;
    --card-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    --card-shadow-hover: 0 8px 12px rgba(0, 0, 0, 0.15);
    --title-color: #343a40;
    --subtitle-color: #6c757d;
    --border-radius: 16px;
    --transition-duration: 400ms;
    --transition-timing: cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    line-height: 1.6;
}

.container {
    max-width: 960px;
    margin: 0 auto;
    padding: 40px 20px;
}

.header {
    text-align: center;
    margin-bottom: 60px;
}

.header h1 {
    font-size: 2.5rem;
    color: var(--title-color);
    margin-bottom: 10px;
}

.header .subtitle {
    font-size: 1.1rem;
    color: var(--subtitle-color);
}

.project-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
}

.project-card {
    background-color: var(--card-bg);
    border-radius: var(--border-radius);
    box-shadow: var(--card-shadow);
    overflow: hidden;
    text-decoration: none;
    color: inherit;
    transition: transform var(--transition-duration) var(--transition-timing), box-shadow var(--transition-duration) var(--transition-timing);
}

.project-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--card-shadow-hover);
}

.project-card .card-image {
    width: 100%;
    height: 180px;
    overflow: hidden;
}

.project-card .card-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.project-card .card-content {
    padding: 24px;
}

.project-card h2 {
    font-size: 1.4rem;
    color: var(--title-color);
    margin-bottom: 8px;
}

.project-card p {
    font-size: 1rem;
    color: var(--subtitle-color);
}

.project-card.placeholder {
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    border: 2px dashed #dee2e6;
    background: transparent;
    box-shadow: none;
}
.project-card.placeholder:hover {
    transform: none;
    box-shadow: none;
    border-color: #ced4da;
}


.footer {
    text-align: center;
    margin-top: 80px;
    color: var(--subtitle-color);
}