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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: #ffffff;
    color: #2c3e50;
    line-height: 1.6;
}

/* Header & Navigation */
header {
    background: linear-gradient(135deg, #1e3c72 0%, #2a5298 100%);
    color: white;
    padding: 1rem 0;
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

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

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    letter-spacing: 1px;
}

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

.nav-menu a {
    color: white;
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s;
    cursor: pointer;
}

.nav-menu a:hover {
    color: #74b9ff;
}

.menu-toggle {
    display: none;
    flex-direction: column;
    cursor: pointer;
}

.menu-toggle span {
    width: 25px;
    height: 3px;
    background: white;
    margin: 3px 0;
    transition: 0.3s;
}

/* Sections */
section {
    max-width: 1200px;
    margin: 0 auto;
    padding: 6rem 2rem 4rem;
    min-height: 100vh;
}

h1 {
    font-size: 4rem;
    margin-bottom: 1rem;
    color: #1e3c72;
}

h2 {
    font-size: 2.5rem;
    margin-bottom: 2rem;
    color: #1e3c72;
    border-bottom: 3px solid #2a5298;
    display: inline-block;
    padding-bottom: 0.5rem;
}

.subtitle {
    font-size: 1.1rem;
    color: #555;
    margin-bottom: 1.5rem;
}

.description {
    font-size: 1.1rem;
    text-align: justify;
    color: #666;
    max-width: 800px;
    line-height: 1.8;
}

/* ukuran */

.ukuran
{
    border-radius: 30px;
}

/* Home Section */
#home {
    display: flex;
    align-items: center;
    justify-content: center;
}

.home-content {
    text-align: center;
    margin-top: -17%;
}

/* Skills Section */
.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

.skill-card {
    background: #f8f9fa;
    padding: 2rem;
    border-radius: 10px;
    border-left: 4px solid #2a5298;
    transition: transform 0.3s, box-shadow 0.3s;
}

.skill-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0,0,0,0.1);
}

.skill-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.skill-card h3 {
    color: #1e3c72;
    margin-bottom: 0.5rem;
    font-size: 1.3rem;
}

.skill-card p {
    color: #666;
    margin-bottom: 1rem;
}

.skill-bar {
    background: #e0e0e0;
    height: 8px;
    border-radius: 4px;
    overflow: hidden;
}

.skill-progress {
    background: linear-gradient(90deg, #1e3c72, #2a5298);
    height: 100%;
    border-radius: 4px;
    transition: width 1s ease;
}

/* Projects Section */
.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

.project-card {
    background: #f8f9fa;
    border-radius: 10px;
    overflow: hidden;
    transition: transform 0.3s, box-shadow 0.3s;
}

.project-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0,0,0,0.15);
}

.project-image {
    background: linear-gradient(135deg, #1e3c72, #2a5298);
    height: 200px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.placeholder-img {
    font-size: 4rem;
    color: white;
}

.project-content {
    padding: 1.5rem;
}

.project-content h3 {
    color: #1e3c72;
    margin-bottom: 0.5rem;
    font-size: 1.3rem;
}

.project-content p {
    color: #666;
    margin-bottom: 1rem;
    line-height: 1.6;
}

.project-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.project-tags span {
    background: #e3f2fd;
    color: #1e3c72;
    padding: 0.3rem 0.8rem;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 500;
}

/* Certificates Section */
.certificates-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

.certificate-card {
    background: #f8f9fa;
    padding: 2rem;
    border-radius: 10px;
    border-top: 4px solid #2a5298;
    text-align: center;
    transition: transform 0.3s, box-shadow 0.3s;
}

.certificate-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0,0,0,0.1);
}

.certificate-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.certificate-card h3 {
    color: #1e3c72;
    margin-bottom: 0.8rem;
    font-size: 1.2rem;
}

.certificate-card .issuer {
    color: #666;
    font-size: 0.95rem;
    margin-bottom: 0.3rem;
}

.certificate-card .date {
    color: #888;
    font-size: 0.9rem;
}

/* Contact Section */
.contact-container {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: 3rem;
    margin-top: 2rem;
}

.contact-info h3 {
    color: #1e3c72;
    font-size: 1.5rem;
    margin-bottom: 1rem;
}

.contact-info p {
    color: #666;
    margin-bottom: 2rem;
    line-height: 1.8;
}

.info-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1rem;
    color: #555;
}

.info-item .icon {
    font-size: 1.5rem;
}

.contact-form {
    background: #f8f9fa;
    padding: 2rem;
    border-radius: 10px;
    border-left: 4px solid #2a5298;
}

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

.form-group label {
    display: block;
    color: #1e3c72;
    font-weight: 500;
    margin-bottom: 0.5rem;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 0.8rem;
    border: 1px solid #ddd;
    border-radius: 5px;
    font-family: inherit;
    font-size: 1rem;
    transition: border-color 0.3s;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: #2a5298;
}

.submit-btn {
    background: linear-gradient(135deg, #1e3c72, #2a5298);
    color: white;
    padding: 0.8rem 2rem;
    border: none;
    border-radius: 5px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: transform 0.3s, box-shadow 0.3s;
}

.submit-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(42, 82, 152, 0.3);
}

.form-message {
    margin-top: 1rem;
    padding: 1rem;
    border-radius: 5px;
    text-align: center;
    font-weight: 500;
    display: none;
}

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

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

/* Footer */
footer {
    color: rgb(0, 0, 0);
    text-align: center;
    padding: 2rem;
}

/* Responsive Design */
@media (max-width: 768px) {
    .menu-toggle {
        display: flex;
    }

    .nav-menu {
        position: absolute;
        top: 100%;
        left: 0;
        width: 100%;
        background: #1e3c72;
        flex-direction: column;
        padding: 1rem 0;
        gap: 0;
        display: none;
    }

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

    .nav-menu li {
        text-align: center;
        padding: 0.8rem 0;
    }

    h1 {
        font-size: 2rem;
    }

    h2 {
        font-size: 1.8rem;
    }

    .contact-container {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

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