:root {
    --primary-color: #3399ff;
    --primary-hover-color: #007bff;
    --dark-color: #021222;
    --light-color: #90e0e0;
    --card-color: #1E1E1E;
    --white-color: #fff;
    --font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif;
    --box-shadow: 0 4px 8px rgba(0, 0, 0, 0.5);
}

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

.pengertian-content {
    background: var(--card-color);
    border-radius: 5px;
    box-shadow: var(--box-shadow), 0 0 20px rgba(0, 255, 255, 0.5);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    align-items: right;
    padding: 1rem;
    font-size: 1.1rem;

}
.pengertian-content:hover {
    transform: translateY(-5px);
    box-shadow: var(--box-shadow), 0 0 20px rgba(255, 0, 255, 0.5);
}

.pengertian-image {
  float: left;
  width: 150px;
  height: 150px;
  overflow: hidden;
  padding-right: 1rem;
  padding-bottom: 1rem;
}

.pengertian-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  --g: 3px;     /* the gap */
  --b: 3px;    /* border thickness*/
  --c: #066796; /* the color */
  
  
  padding: calc(var(--g) + var(--b));
  --_c: #0000 0 5%, var(--c) 0 75%;
  --_g1: repeating-linear-gradient(90deg ,var(--_c)) repeat-x;
  --_g2: repeating-linear-gradient(180deg,var(--_c)) repeat-y;
  background:
    var(--_g1) var(--_p, 25%) 0   ,var(--_g2) 0    var(--_p,125%),
    var(--_g1) var(--_p,125%) 100%,var(--_g2) 100% var(--_p, 25%);
  background-size: 200% var(--b),var(--b) 200%;
  cursor: pointer;
  filter: grayscale(50%);
  transition: .3s;
}

.pengertian-image img:hover {
  --_p: 75%;
  filter: grayscale(0%);
}

.pengertian-content::after {
  content: "";
  display: table;
  clear: both;
}

.sejarah-image {
  float: left;
  width: 150px;
  height: 150px;
  overflow: hidden;
  padding-right: 1rem;
  padding-bottom: 1rem;
}

.sejarah-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  --g: 3px;     /* the gap */
  --b: 3px;    /* border thickness*/
  --c: #066796; /* the color */
  
  
  padding: calc(var(--g) + var(--b));
  --_c: #0000 0 5%, var(--c) 0 75%;
  --_g1: repeating-linear-gradient(90deg ,var(--_c)) repeat-x;
  --_g2: repeating-linear-gradient(180deg,var(--_c)) repeat-y;
  background:
    var(--_g1) var(--_p, 25%) 0   ,var(--_g2) 0    var(--_p,125%),
    var(--_g1) var(--_p,125%) 100%,var(--_g2) 100% var(--_p, 25%);
  background-size: 200% var(--b),var(--b) 200%;
  cursor: pointer;
  filter: grayscale(50%);
  transition: .3s;
}

.sejarah-image img:hover {
  --_p: 75%;
  filter: grayscale(0%);
}

.sejarah-grid {
    display: grid;
    gap: 2rem;
}

.sejarah-content {
    background: var(--card-color);
    border-radius: 5px;
    box-shadow: var(--box-shadow), 0 0 20px rgba(0, 255, 255, 0.5);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    align-items: right;
    padding: 1rem;
}

.sejarah-content:hover {
    transform: translateY(-5px);
    box-shadow: var(--box-shadow), 0 0 20px rgba(255, 0, 255, 0.5);
}

.sejarah-card .sejarah-content {
    padding: 1rem;
    text-align: left;
}

.sejarah-card h3 {
    margin-bottom: 0.5rem;
}

.sejarah-card p {
    color: var(--light-color);
}

.sejarah-card {
    background: var(--card-color);
    padding: 0rem;
    border-radius: 5px;
    box-shadow: var(--box-shadow);
    font-weight: bold;
}

.kesimpulan-content {
    background: var(--card-color);
    border-radius: 5px;
    box-shadow: var(--box-shadow), 0 0 20px rgba(0, 255, 255, 0.5);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    align-items: right;
    padding: 1rem;
    font-weight: bold;
}

.kesimpulan-content:hover {
    transform: translateY(-5px);
    box-shadow: var(--box-shadow), 0 0 20px rgba(255, 0, 255, 0.5);
}


body {
    font-family: var(--font-family);
    line-height: 1.6;
    background-color: var(--dark-color);
    color: var(--light-color);
    animation: fadeIn 2s ease-in;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

main {
    animation: slideUp 1.5s ease-out 0.5s both;
}

@keyframes slideUp {
    from { transform: translateY(50px); opacity: 0; }
    to { transform: translateY(0); opacity: 1; }
}



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

h1, h2, p {
    color: var(--light-color);
    margin-bottom: 1rem;
}

h3, p1 {
  color: var(--light-color);
}

h3 {
  font-size: 1.7rem;
}

h2 {
    text-align: center;
    font-size: 2rem;
    margin-bottom: 2rem;
    background: var(--card-color);
    padding: 1rem;
    border-radius: 5px;
    box-shadow: var(--box-shadow), 0 0 20px rgba(0, 255, 255, 0.5), 0 0 40px rgba(255, 0, 255, 0.3);
    font-weight: bold;

}

header {
    background: var(--dark-color);
    box-shadow: var(--box-shadow);
    padding: 1rem 0;
    position: sticky;
    top: 0;
    z-index: 1000;
    animation: slideDown 1s ease-out;
}

@keyframes slideDown {
    from { transform: translateY(-100%); opacity: 0; }
    to { transform: translateY(0); opacity: 1; }
}

header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 1.5rem;
    font-weight: bold;
    color: var(--primary-color);
    text-decoration: none;
}
nav {
  align-items: center;
}
nav ul {
    list-style: none;
    display: flex;
}

nav ul li {
    margin-left: 20px;
}

nav ul li a {
    text-decoration: none;
    color: var(--light-color);
    font-weight: bold;
    transition: color 0.3s ease;
}

nav ul li a:hover {
    color: var(--primary-color);
}

.hero {
    background: var(--dark-color);
    color: var(--white-color);
    height: 60vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    padding: 0 20px;
}

.hero h1 {
    font-size: 3.5rem;
}

.hero .hero-subtitle {
    font-size: 1.5rem;
    margin-bottom: 1.5rem;
}

.btn {
    display: inline-block;
    background: var(--primary-color);
    color: var(--white-color);
    padding: 12px 24px;
    text-decoration: none;
    border-radius: 5px;
    font-weight: bold;
    transition: background-color 0.3s ease;
}

.btn:hover {
    background: var(--primary-hover-color);
}

.btn-secondary {
    display: inline-block;
    background: transparent;
    color: var(--primary-color);
    padding: 10px 20px;
    text-decoration: none;
    border: 1px solid var(--primary-color);
    border-radius: 5px;
    font-weight: bold;
    transition: background-color 0.3s ease, color 0.3s ease;
}

.btn-secondary:hover {
    background: var(--primary-color);
    color: var(--white-color);
}


section {
    padding: 4rem 0;
}

.jenis-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.jenis-card {
    background: var(--card-color);
    border-radius: 5px;
    box-shadow: var(--box-shadow), 0 0 20px rgba(0, 255, 255, 0.5);
    overflow: hidden;
    display: flex;
    align-items: center;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.alat-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.alat-card {
    background: var(--card-color);
    border-radius: 5px;
    box-shadow: var(--box-shadow), 0 0 20px rgba(0, 255, 255, 0.5);
    overflow: hidden;
    display: flex;
    align-items: center;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    height: 200px;
}

.alat-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--box-shadow), 0 0 20px rgba(255, 0, 255, 0.5);
}

.alat-card img {
    flex: 1;
    height: 30%;
    object-fit: cover;
    min-width: 150px;
    max-width: 150px;
    margin: 0;
    padding: 0;
    border: none;
    display: block;
}

.alat-card .alat-content {
    flex: 1;
    padding: 1rem;
    text-align: left;
}

.alat-card h3 {
    margin-bottom: 0.5rem;
}

.alat-card p {
    color: var(--light-color);
}

.media-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem;
}

.media-card:last-child {
    grid-column: span 2;
    justify-self: center;
}

.media-card {
    background: var(--card-color);
    border-radius: 5px;
    box-shadow: var(--box-shadow), 0 0 20px rgba(0, 255, 255, 0.5);
    overflow: hidden;
    text-align: center;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    position: relative;
}

.media-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--box-shadow), 0 0 20px rgba(255, 0, 255, 0.5);
}

.media-card img {
    width: 100%;
    height: auto;
    display: block;
}

.media-content {
    padding: 1.5rem;
    opacity: 1;
    height: auto;
    overflow: visible;
    background: var(--card-color);
}

.media-card:hover .media-content {
    opacity: 1;
    height: auto;
    padding: 1.5rem;
    background: var(--card-color);
}

.media-content h3 {
    margin-bottom: 0.5rem;
}

.media-content p1 {
    color: var(--light-color);
}

.jenis-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--box-shadow), 0 0 20px rgba(255, 20, 147, 0.6);
}

.jenis-card img {
    width: 30%;
    max-width: 200px;
    min-width: 150px;
    height: 100%;
    object-fit: cover;
    margin: 0;
    padding: 0;
    border: none;
    display: block;
}

.jenis-card .jenis-content {
    padding: 1rem;
    text-align: left;
}

.jenis-card h3 {
    margin-bottom: 0.5rem;
}

.jenis-card p {
    color: var(--light-color);
}

.alat-card:last-child {
    grid-column: span 2;
    justify-self: center;
}

.alat-card:last-child img{
    width: 100%;
    max-width: 200px;
    min-width: 150px;
    height: 100%;
    object-fit: cover;
    margin: 0;
    padding: 0;
    border: none;
    display: block;
}

.alat-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.alat-card {
    background: var(--card-color);
    border-radius: 5px;
    box-shadow: var(--box-shadow), 0 0 20px rgba(0, 255, 255, 0.5);
    overflow: hidden;
    display: flex;
    align-items: center;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.alat-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--box-shadow), 0 0 20px rgba(255, 20, 147, 0.6);
}

.alat-card img {
    width: 25%;
    max-width: 200px;
    min-width: 150px;
    height: 100%;
    object-fit: cover;
    margin: 0;
    padding: 0;
    border: none;
    display: block;
}

.alat-card .alat-content {
    padding: 1rem;
    text-align: left;
}

.alat-card h3 {
    margin-bottom: 0.5rem;
}

.alat-card p {
    color: var(--light-color);
}


.media-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem;
}

.media-card:last-child {
    grid-column: span 2;
    justify-self: center;
}

.media-card {
    background: var(--card-color);
    border-radius: 5px;
    box-shadow: var(--box-shadow), 0 0 20px rgba(0, 255, 255, 0.5);
    overflow: hidden;
    text-align: center;
    transition: transform 0.3s ease, background 0.3s ease;
    position: relative;
}

.media-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--box-shadow), 0 0 20px rgba(255, 20, 147, 0.6);
}

.media-card img {
    width: 100%;
    height: auto;
    display: block;
}

.media-content {
    padding: 1.5rem;
    opacity: 1;
    height: auto;
    overflow: visible;
    background: var(--card-color);
}

.media-card:hover .media-content {
    opacity: 1;
    height: auto;
    padding: 1.5rem;
    background: var(--card-color);
}

.media-card:hover .media-content {
    opacity: 1;
    height: auto;
    padding: 1.5rem;
}

.media-card:hover .media-content {
    opacity: 1;
}

.media-content h3 {
    margin-bottom: 0.5rem;
}


#contact {
    text-align: center;
}

#contact p {
    max-width: 600px;
    margin: 0 auto 1.5rem auto;
}

footer {
    background: var(--dark-color);
    color: var(--white-color);
    text-align: left;
    padding: 2rem 0;
}

.contact-info {
    text-align: left;
    margin-top: 1rem;
    font-size: 0rem;
}

.contact-info a {
    color: var(--primary-color);
    text-decoration: none;
    word-break: break-all;
}

.contact-info a:hover {
    text-decoration: underline;
}

/* Tech-themed styles for header and footer */
.tech-header {
  background: linear-gradient(135deg, #0f0f23 0%, #1a1a2e 50%, #16213e 100%);
  box-shadow: 0 0 20px rgba(0, 255, 255, 0.5), 0 0 40px rgba(0, 255, 255, 0.3);
  font-family: 'JetBrains Mono', monospace;
  border-bottom: 2px solid #00ffff;
  position: sticky;
  top: 0;
  z-index: 1000;
  padding: 1rem 0;
}

.tech-header h1 {
  color: #00ffff;
  text-shadow: 0 0 10px #00ffff, 0 0 20px #00ffff;
  font-weight: 700;
  font-size: 1.7rem;
}

.tech-header nav ul li a {
  font-family: 'JetBrains Mono', monospace;
  color: #90e0e0;
  transition: color 0.3s ease, text-shadow 0.3s ease;
}

.tech-header nav ul li a:hover {
  color: #00ffff;
  text-shadow: 0 0 10px #00ffff;
}

.tech-footer {
  background: linear-gradient(135deg, #0f0f23 0%, #1a1a2e 50%, #16213e 100%);
  box-shadow: 0 0 20px rgba(255, 0, 255, 0.5), 0 0 40px rgba(255, 0, 255, 0.3);
  font-family: 'JetBrains Mono', monospace;
  border-top: 2px solid #ff00ff;
  color: #90e0e0;
  text-align: left;
}

.tech-footer .contact-info {
  font-size: 0.6rem;
  color: #00ffff;
  text-shadow: 0 0 10px #00ffff;
}

.tech-footer p {
  color: #90e0e0;
  font-family: 'JetBrains Mono', monospace;
}

/* 9. Responsive Design */
@media (max-width: 768px) {
    h2 {
        font-size: 2rem;
    }

    .hero h1 {
        font-size: 2.5rem;
    }

    .hero .hero-subtitle {
        font-size: 1.2rem;
    }

    header .container {
        flex-direction: column;
        gap: 0.5rem;
    }

    .alat-grid {
        display: flex;
        flex-direction: column;
        gap: 2rem;
    }

    .alat-card {
        display: flex;
        align-items: center;
        height: 200px;
    }

    .alat-card img {
        flex: 1;
        height: 100%;
        object-fit: cover;
        min-width: 150px;
        max-width: 200px;
    }

    .alat-card .alat-content {
        flex: 1;
        padding: 1rem;
        text-align: left;
    }

    .media-grid {
        display: flex;
        flex-direction: column;
        gap: 2rem;
    }

    .media-card {
        display: block;
    }

    .media-card img {
        width: 100%;
        height: auto;
    }

    .media-content {
        padding: 1.5rem;
        text-align: center;
    }

}