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

body {
    font-family: 'Arial', sans-serif;
    background-color: #ffffff;
    color: #000000;
    line-height: 1.6;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* Navbar Styles */
.navbar {
    background-color: #000000;
    padding: 1rem 0;
    position: sticky;
    top: 0;
    z-index: 100;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 2rem;
}

.logo {
    color: #ffffff;
    font-size: 1.5rem;
    font-weight: bold;
    text-decoration: none;
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.nav-links a {
    color: #ffffff;
    text-decoration: none;
    transition: color 0.3s ease;
    padding: 0.5rem 1rem;
}

.nav-links a:hover {
    color: #cccccc;
    background-color: #333333;
}

/* Mobile menu toggle */
.menu-toggle {
    display: none;
    background: none;
    border: none;
    color: #ffffff;
    font-size: 1.5rem;
    cursor: pointer;
}

/* Main Content */
.main-content {
    flex: 1;
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem;
    width: 100%;
}

.hero {
    text-align: center;
    margin-bottom: 3rem;
    padding: 2rem 0;
}

.hero-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 2rem;
}

.github-logo {
    width: 80px;
    height: 80px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.github-logo img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    transition: transform 0.3s ease;
}

.github-logo:hover img {
    transform: scale(1.1);
}

.hero-text h1 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.hero-text p {
    font-size: 1.1rem;
    color: #666666;
    max-width: 600px;
}

/* Form Styles */
.search-form {
    background-color: #f8f8f8;
    padding: 2rem;
    border: 2px solid #000000;
    margin-bottom: 2rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
    margin-bottom: 1rem;
}

.form-group {
    margin-bottom: 1rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: bold;
}

.form-group input {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid #000000;
    background-color: #ffffff;
    font-size: 1rem;
}

.btn {
    background-color: #000000;
    color: #ffffff;
    padding: 0.75rem 2rem;
    border: none;
    cursor: pointer;
    font-size: 1rem;
    transition: background-color 0.3s ease;
    width: 100%;
}

.btn:hover {
    background-color: #333333;
}

.btn:disabled {
    background-color: #666666;
    cursor: not-allowed;
}

/* Loading and Error States */
.loading {
    text-align: center;
    padding: 2rem;
    font-size: 1.1rem;
}

.error {
    background-color: #f8f8f8;
    border: 2px solid #000000;
    padding: 1rem;
    margin: 1rem 0;
    text-align: center;
}

/* Commits Display */
.commits-container {
    margin-top: 2rem;
}

.commit-item {
    background-color: #f8f8f8;
    border: 1px solid #000000;
    padding: 1.5rem;
    margin-bottom: 1rem;
}

.commit-message {
    font-size: 1.1rem;
    font-weight: bold;
    margin-bottom: 0.5rem;
    word-wrap: break-word;
}

.commit-meta {
    color: #666666;
    font-size: 0.9rem;
    margin-bottom: 0.5rem;
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
}

.commit-author {
    font-weight: bold;
    color: #000000;
}

.commit-sha {
    font-family: monospace;
    background-color: #ffffff;
    padding: 0.2rem 0.5rem;
    border: 1px solid #cccccc;
    display: inline-block;
    margin-top: 0.5rem;
    font-size: 0.8rem;
}

/* Footer Styles */
.footer {
    background-color: #000000;
    color: #ffffff;
    padding: 4rem 0 1rem;
    margin-top: auto;
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: start;
}

.footer-info {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.footer-info h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
}

.footer-info p {
    color: #cccccc;
    line-height: 1.8;
}

.contact-form {
    background-color: #111111;
    padding: 2rem;
    border: 1px solid #333333;
}

.contact-form h3 {
    margin-bottom: 1.5rem;
    font-size: 1.3rem;
}

.contact-form .form-group {
    margin-bottom: 1rem;
}

.contact-form label {
    color: #ffffff;
    display: block;
    margin-bottom: 0.5rem;
    font-size: 0.9rem;
}

.contact-form input,
.contact-form textarea {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid #333333;
    background-color: #000000;
    color: #ffffff;
    font-size: 0.9rem;
}

.contact-form input::placeholder,
.contact-form textarea::placeholder {
    color: #666666;
}

.contact-form textarea {
    height: 100px;
    resize: vertical;
}

.contact-form .btn {
    background-color: #ffffff;
    color: #000000;
    font-size: 0.9rem;
    padding: 0.6rem 1.5rem;
    width: auto;
}

.contact-form .btn:hover {
    background-color: #cccccc;
}

.contact-form .btn:disabled {
    background-color: #666666;
    color: #333333;
}

/* Contact Form Messages */
.contact-message {
    margin-top: 1rem;
    padding: 1rem;
    border-radius: 4px;
    text-align: center;
}

.contact-message.success {
    background-color: #d4edda;
    color: #155724;
    border: 1px solid #c3e6cb;
}

.contact-message.error {
    background-color: #f8d7da;
    color: #721c24;
    border: 1px solid #f5c6cb;
}

.footer-bottom {
    grid-column: 1 / -1;
    text-align: center;
    margin-top: 3rem;
    padding-top: 2rem;
    border-top: 1px solid #333333;
    color: #cccccc;
}

/* Tablet Responsive Design */
@media (max-width: 1024px) {
    .main-content {
        padding: 1.5rem;
    }

    .hero-text h1 {
        font-size: 2.2rem;
    }

    .search-form {
        padding: 1.5rem;
    }

    .footer-content {
        gap: 3rem;
    }

    .commit-meta {
        flex-direction: column;
        gap: 0.5rem;
    }

    .github-logo {
        width: 70px;
        height: 70px;
    }
}

/* Mobile Responsive Design */
@media (max-width: 768px) {
    .nav-container {
        padding: 0 1rem;
    }

    .nav-links {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background-color: #000000;
        flex-direction: column;
        padding: 1rem;
        gap: 0;
    }

    .nav-links.active {
        display: flex;
    }

    .nav-links a {
        padding: 1rem;
        border-bottom: 1px solid #333333;
    }

    .menu-toggle {
        display: block;
    }

    .hero-text h1 {
        font-size: 1.8rem;
    }

    .hero-text p {
        font-size: 1rem;
    }

    .github-logo {
        width: 60px;
        height: 60px;
    }

    .main-content {
        padding: 1rem;
    }

    .search-form {
        padding: 1rem;
        margin: 0 0 2rem 0;
    }

    .form-row {
        grid-template-columns: 1fr;
        gap: 0;
    }

    .footer-content {
        grid-template-columns: 1fr;
        gap: 2rem;
        padding: 0 1rem;
    }

    .footer-info {
        order: 2;
    }

    .contact-form {
        order: 1;
        padding: 1.5rem;
    }

    .commit-item {
        padding: 1rem;
    }

    .commit-message {
        font-size: 1rem;
    }
}

/* Small Mobile */
@media (max-width: 480px) {
    .nav-container {
        padding: 0 0.5rem;
    }

    .logo {
        font-size: 1.2rem;
    }

    .hero-text h1 {
        font-size: 1.5rem;
    }

    .hero-text p {
        font-size: 0.9rem;
    }

    .github-logo {
        width: 50px;
        height: 50px;
    }

    .main-content {
        padding: 0.5rem;
    }

    .search-form {
        padding: 0.8rem;
    }

    .form-group input {
        padding: 0.6rem;
        font-size: 0.9rem;
    }

    .btn {
        padding: 0.6rem 1rem;
        font-size: 0.9rem;
    }

    .commit-item {
        padding: 0.8rem;
    }

    .contact-form {
        padding: 1rem;
    }

    .footer-content {
        padding: 0 0.5rem;
    }
}