/* Reset & Base */
* { margin: 0; padding: 0; box-sizing: border-box; }

body {
    font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif;
    background-color: #ffffff;
    color: #212529;
    line-height: 1.6;
}

/* Header & Navigation */
header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem 2rem;
    border-bottom: 2px solid #000;
    background: #fff;
    position: sticky;
    top: 0;
    z-index: 100;
}

.logo {
    font-size: 1.8rem;
    font-weight: 900;
    text-decoration: none;
    color: #000;
    letter-spacing: -0.05em;
    text-transform: lowercase;
}

nav {
    display: flex;
    gap: 2rem;
}

nav a {
    text-decoration: none;
    color: #555;
    font-size: 0.9rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    transition: color 0.3s;
}

nav a:hover, nav a.active {
    color: #000;
    border-bottom: 2px solid #000;
}

/* Main Content */
main {
    max-width: 1200px;
    margin: 0 auto;
    padding: 3rem 2rem;
}

/* Home Grid */
.home-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

.home-card {
    display: block;
    padding: 3rem 2rem;
    border: 2px solid #000;
    text-decoration: none;
    color: #000;
    transition: all 0.3s ease;
    background: #fff;
}

.home-card:hover {
    background: #000;
    color: #fff;
    transform: translateY(-5px);
}

.home-card h2 {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.home-card p {
    font-size: 0.9rem;
    opacity: 0.8;
}

/* Page Header */
.page-header {
    margin-bottom: 3rem;
    border-bottom: 2px solid #000;
    padding-bottom: 1rem;
}

.page-header h1 {
    font-size: 2.5rem;
    text-transform: uppercase;
    letter-spacing: -0.02em;
}

.page-header p {
    font-family: 'Courier New', Courier, monospace;
    color: #666;
    margin-top: 0.5rem;
}

/* Projects List */
.projects-list {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.project-card {
    border: 1px solid #ddd;
    padding: 2rem;
    background: #fcfcfc;
    transition: border-color 0.3s;
}

.project-card:hover {
    border-color: #000;
}

.project-code {
    font-family: 'Courier New', Courier, monospace;
    font-size: 0.9rem;
    color: #888;
    margin-bottom: 0.5rem;
    letter-spacing: 0.1em;
}

.project-card h2 {
    font-size: 1.8rem;
    margin-bottom: 1rem;
    text-transform: uppercase;
}

.project-details {
    list-style: none;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 0.5rem;
}

.project-details li {
    font-size: 0.95rem;
    color: #444;
}

.project-details strong {
    color: #000;
    font-family: 'Courier New', Courier, monospace;
    font-size: 0.85rem;
    text-transform: uppercase;
    margin-right: 0.5rem;
}

/* Converter Tool */
.converter-tool {
    max-width: 600px;
    margin: 0 auto;
    padding: 2rem;
    border: 2px solid #000;
    background: #f8f9fa;
}

.converter-tool p {
    margin-bottom: 1.5rem;
    color: #555;
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    font-family: 'Courier New', Courier, monospace;
    font-size: 0.9rem;
    text-transform: uppercase;
    margin-bottom: 0.5rem;
    color: #000;
}

.form-group input {
    width: 100%;
    padding: 0.8rem;
    font-family: 'Courier New', Courier, monospace;
    font-size: 1rem;
    border: 1px solid #ccc;
    background: #fff;
}

.form-group input:focus {
    outline: none;
    border-color: #000;
}

button {
    width: 100%;
    padding: 1rem;
    background: #000;
    color: #fff;
    border: none;
    font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif;
    font-size: 1rem;
    font-weight: bold;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    cursor: pointer;
    transition: background 0.3s;
}

button:hover {
    background: #333;
}

.result-box {
    margin-top: 2rem;
    padding: 1.5rem;
    background: #000;
    color: #fff;
}

.result-box h3 {
    font-family: 'Courier New', Courier, monospace;
    margin-bottom: 0.5rem;
    text-transform: uppercase;
}

.result-box p {
    font-family: 'Courier New', Courier, monospace;
    font-size: 1.2rem;
    color: #0f0; /* Terminal green effect */
}

/* Footer */
footer {
    text-align: center;
    padding: 2rem;
    margin-top: 4rem;
    border-top: 2px solid #000;
    font-size: 0.9rem;
    color: #666;
}

/* Responsive */
@media (max-width: 768px) {
    header {
        flex-direction: column;
        gap: 1rem;
    }
    nav {
        gap: 1rem;
        flex-wrap: wrap;
        justify-content: center;
    }
    .page-header h1 {
        font-size: 2rem;
    }
    .project-card h2 {
        font-size: 1.4rem;
    }
}