/* --- Global Styles & Variables --- */
:root {
    --primary-color: #007BFF; /* Biru modern */
    --secondary-color: #6c757d;
    --background-color: #f8f9fa;
    --text-color: #343a40;
    --card-bg-color: #ffffff;
    --shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
    --border-radius: 12px;
    --border-color: #e0e0e0; /* Tambahan untuk border */
    --gradient-primary: linear-gradient(135deg, #ffffff 0%, #371956 100%);
    --gradient-secondary: linear-gradient(135deg, rgb(195, 233, 255) 0%, #6f819c 100%);
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Poppins', sans-serif;
    margin: 0;
    background-color: var(--background-color);
    color: var(--text-color);
    line-height: 1.7;
    transition: background-color 0.3s ease, color 0.3s ease;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    /* Mencegah seleksi teks */
    -webkit-user-select: none; /* Safari */
    -moz-user-select: none;    /* Firefox */
    -ms-user-select: none;     /* IE10+/Edge */
    user-select: none;         /* Standard */
}

/* TAMBAHKAN DEFINISI WARNA DARK MODE DI SINI */
body.dark-mode {
    --primary-color: #0a84ff; /* Biru sedikit lebih cerah */
    --secondary-color: #8e8e93;
    --background-color: #4b4b4b; /* Latar belakang lebih gelap untuk kontras */
    --text-color: #ffffff; /* Teks putih untuk kontras maksimal */
    --card-bg-color: #1a1a1a5d; /* Warna kartu lebih gelap */
    --shadow: 0 4px 15px rgba(0, 0, 0, 0.5); /* Bayangan lebih gelap */
    --border-color: #333333; /* Warna border gelap */
}

body.dark-mode .navbar {
    background-color: rgba(83, 83, 83, 0.8);
}

body.dark-mode .hero-content {
    background: rgba(0, 0, 0, 0.7);
}

body.dark-mode .hero h1 {
    color: #fff;
}

body.dark-mode .hero .subtitle {
    color: rgba(255, 255, 255, 0.8);
}

body.dark-mode footer {
    background-color: #1a1a1a;
    color: #ffffff;
}

body.dark-mode {
    --gradient-secondary: linear-gradient(135deg, var(--primary-color) 0%, #ffffff 100%);
}

.container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 20px;
}


/* --- Navbar --- */
.navbar {
    background-color: rgba(255, 255, 255, 0.8);
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.05);
    position: fixed; /* Tetap di atas saat scroll */
    width: auto; /* Lebar menyesuaikan konten */
    top: 20px; /* Jarak dari atas */
    left: 50%; /* Posisi di tengah layar */
    transform: translateX(-50%); /* Penyesuaian agar benar-benar di tengah */
    border-radius: 50px; /* Membuat sudut sangat bulat seperti pil */
    z-index: 1000;
    backdrop-filter: blur(10px); /* Efek kaca */
    -webkit-backdrop-filter: blur(10px); /* Dukungan untuk Safari */
    transition: top 0.3s ease, background-color 0.3s ease;
}

.navbar .container {
    display: flex;
    justify-content: center; /* Semua item di dalam container akan terpusat */
    align-items: center;
    height: 50px; /* Tinggi navbar */
    padding: 0 10px; /* Padding di sisi kiri dan kanan pil */
    position: relative;
}

.navbar nav {
    display: flex;
    justify-content: center; /* Memastikan <ul> terpusat di dalam <nav> */
    width: 100%;
}

.navbar nav ul {
    list-style: none;
    margin: 0;
    padding: 0; /* Hapus padding yang tidak perlu */
    display: flex;
    align-items: center;
    gap: 5px; /* Jarak antar ikon menu */
}

.navbar nav a {
    text-decoration: none;
    color: var(--text-color);
    /* Membuat tombol menjadi bulat dan berukuran sama */
    display: flex;
    justify-content: center;
    align-items: center;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    font-size: 1.1rem;
    position: relative; /* Diperlukan untuk pseudo-element */
    overflow: hidden; /* Mencegah pseudo-element keluar dari lingkaran */
    z-index: 1; /* Memastikan ikon di atas pseudo-element */
    transition: color 0.3s ease;
}

/* Efek latar belakang yang tumbuh saat hover */
.navbar nav a::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 123, 255, 0.1);
    border-radius: 50%;
    transform: scale(0);
    transition: transform 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
    z-index: -1;
}

.navbar nav a:hover, .navbar button:hover {
    color: var(--primary-color);
}

/* Menyesuaikan tombol agar terlihat sama dengan link <a> */
.navbar button {
    text-decoration: none;
    color: var(--text-color);
    display: flex;
    justify-content: center;
    align-items: center;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    font-size: 1.1rem;
    position: relative; /* Diperlukan untuk pseudo-element */
    overflow: hidden; /* Mencegah pseudo-element keluar dari lingkaran */
    z-index: 1; /* Memastikan ikon di atas pseudo-element */
    transition: color 0.3s ease;
}

/* Menerapkan efek yang sama untuk tombol */
.navbar button::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 123, 255, 0.1);
    border-radius: 50%;
    transform: scale(0);
    transition: transform 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
    z-index: -1;
}

.navbar nav a:hover::before, .navbar button:hover::before {
    transform: scale(1);
}

/* Gaya untuk link navbar yang aktif (saat section terlihat) */
.navbar nav a.active {
    color: #fff; /* Warna ikon menjadi putih */
    background-color: var(--primary-color); /* Latar belakang menjadi warna primer */
    box-shadow: 0 0 10px color-mix(in srgb, var(--primary-color) 70%, transparent);
}

/* --- Hero Section (Tentang Saya) --- */
.hero {
    height: 100vh;
    background: linear-gradient(135deg, #1a1a2e 0%, #16213e 25%, #0f3460 50%, #533483 75%, #1a1a2e 100%);
    background-size: 400% 400%;
    animation: gradientBackground 15s ease infinite;
    display: flex;
    align-items: center;
    justify-content: center;
}

.hero-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 40px;
    max-width: 1000px;
    padding: 40px;
    background: rgba(255, 255, 255, 0.437);
    border-radius: 20px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.1);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    transition: background 1s ease;
    transition-delay: 0.5s ease;
}

@keyframes gradientBackground {
    0%, 100% {
        background-position: 0% 50%;
    }
    50% {
        background-position: 100% 50%;
    }
}

.hero-image {
    order: -1;
}

.hero-text {
    flex: 1;
}

.hero h1 {
    font-size: 2em;
    margin-bottom: 10px;
    color: #000;
    letter-spacing: 1px;
}

.hero .subtitle {
    font-size: 1.5em;
    font-weight: 300;
    margin-bottom: 20px;
    color: rgba(0, 0, 0, 0.8);
}

.cta-button {
    display: inline-block;
    background-color: var(--primary-color);
    color: #fff;
    padding: 12px 25px;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 600;
    margin-top: 20px;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    border: none; /* Menghilangkan border default dari browser */
    cursor: pointer; /* Menambahkan kursor pointer untuk menandakan bisa diklik */
}

.cta-button:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 20px rgba(0, 123, 255, 0.3);
}

.hero-image img {
    width: 300px;
    height: 300px;
    object-fit: cover;
    border-radius: 50%;
    box-shadow: var(--shadow);
    transition: box-shadow 0.3s ease;
}

.hero-image img:hover {
    box-shadow: 0 0 30px rgba(0, 123, 255, 0.6);
}

/* --- About Me Section --- */
.about-section {
    padding: 80px 0;
    background-color: var(--card-bg-color); /* Using card background for subtle contrast */
}

.about-section h2 {
    font-size: 2.5em;
    text-align: center;
    margin-bottom: 50px;
}

.about-content {
    display: flex;
    align-items: center;
    gap: 50px;
}

.about-image {
    flex: 1;
    text-align: center;
    position: relative; /* Diperlukan untuk memposisikan pseudo-element cahaya */
    /* Menambahkan perspective untuk menciptakan ruang 3D */
    perspective: 1000px;
}

/* Pseudo-element untuk efek cahaya yang mengikuti mouse */
.about-image::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    /* Gradient radial yang posisinya dikontrol oleh JS via CSS variables */
    background: radial-gradient(
        250px circle at var(--mouse-x) var(--mouse-y),
        rgba(255, 255, 255, 0.2), /* Cahaya di tengah */
        transparent 80% /* Transparan di pinggir */
    );
    border-radius: var(--border-radius);
    opacity: 0; /* Awalnya tidak terlihat */
    transition: opacity 0.3s ease-out;
    z-index: 1; /* Pastikan di atas gambar tapi di bawah konten lain jika ada */
}

/* Tampilkan efek cahaya saat kontainer di-hover (memiliki kelas .is-hovered) */
.about-image.is-hovered::before {
    opacity: 1;
}

.about-image img {
    width: 100%;
    max-width: 350px;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    /* Transisi sekarang hanya untuk transform, agar lebih mulus saat mouse keluar */
    transition: transform 0.6s cubic-bezier(0.23, 1, 0.32, 1);
    will-change: transform; /* Optimasi performa untuk animasi transform */
}

.about-text {
    flex: 1.5;
}

.about-text h3 {
    font-size: 1.8em;
    margin-bottom: 20px;
    color: var(--primary-color);
}

.about-text p {
    font-size: 1em;
    line-height: 1.8;
    margin-bottom: 15px;
}

/* Responsive for About Me Section */
@media (max-width: 768px) {
    .about-content {
        flex-direction: column;
        text-align: center;
    }

    .about-text {
        margin-top: 30px;
    }
}

/* --- Education Background (inside About Me) --- */
/* Menghapus gaya kotak dan hanya menyisakan margin atas */
.education-background {
    margin-top: 35px; /* Sedikit mengurangi margin atas */
}

/* Judul "Educational Background" */
.education-background h4 {
    margin-top: 0;
    margin-bottom: 15px; /* Mengurangi jarak ke timeline */
    color: var(--primary-color);
    font-size: 1.2em;
}

/* Container untuk timeline */
.education-list {
    list-style: none;
    padding: 0;
    margin: 0;
    position: relative;
    /* Garis vertikal timeline yang lebih tipis */
    border-left: 2px solid var(--border-color);
}

/* Setiap item dalam timeline pendidikan */
.education-item {
    position: relative;
    padding-left: 25px; /* Mengurangi jarak teks dari garis */
    padding-bottom: 20px; /* Mengurangi jarak antar item */
}

/* Menghilangkan padding bawah pada item terakhir */
.education-item:last-child {
    padding-bottom: 0;
}

/* Titik pada garis timeline untuk setiap item */
.education-item::before {
    content: '';
    position: absolute;
    left: -6px; /* Posisi titik agar menempel di garis */
    top: 6px; /* Menyesuaikan posisi vertikal */
    width: 9px;  /* Ukuran titik lebih kecil */
    height: 9px; /* Ukuran titik lebih kecil */
    border-radius: 50%;
    background-color: var(--primary-color);
    border: 2px solid var(--card-bg-color); /* Border lebih tipis */
}

.education-item h5, .education-item p {
    margin: 0;
    margin-bottom: 0;
}

/* --- Skills Section --- */
.skills-section {
    padding: 80px 0;
    text-align: center;
}

.skills-section h2 {
    font-size: 2.5em;
    margin-bottom: 50px;
}

.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
}

.skill-card {
    background-color: var(--card-bg-color);
    padding: 40px 20px;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);    
    will-change: transform, box-shadow, background;
    transition: transform 0.3s cubic-bezier(0.25, 0.8, 0.25, 1), box-shadow 0.3s cubic-bezier(0.25, 0.8, 0.25, 1), background 0.3s ease-in-out;
}

.skill-card:hover {
    transform: translateY(-12px) scale(1.05);
    box-shadow: 0 12px 28px rgba(0, 0, 0, 0.2);
    background: var(--gradient-secondary);
}

.skill-icon {
    font-size: 3em;
    color: var(--primary-color);
    margin-bottom: 20px;
    transition: transform 0.3s ease-in-out;
    transition: transform 0.5s ease;
    will-change: transform;
}

.skill-card:hover .skill-icon {
    transform: scale(1.1);
}

.skill-card h3 {
    margin-bottom: 10px;
}

/* --- Achievements Section --- */
.achievements-section {
    padding: 80px 0;
    background-color: var(--card-bg-color);
}

.achievements-section h2 {
    font-size: 2.5em;
    text-align: center;
    margin-bottom: 50px;
}

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

.achievement-card {
    background-color: var(--card-bg-color);
    padding: 30px 20px;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    text-align: center;    
    transition: transform 0.3s cubic-bezier(0.25, 0.8, 0.25, 1), box-shadow 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
}

.achievement-card:hover {
    transform: translateY(-12px) scale(1.05);
    box-shadow: 0 12px 28px rgba(0, 0, 0, 0.2);
}

.achievement-icon {
    font-size: 3em;
    color: var(--primary-color);
    margin-bottom: 15px;
}

.achievement-card h4 {
    margin-bottom: 10px;
}

.achievement-card p {
    margin-bottom: 15px;
    color: var(--secondary-color);
}

.achievement-link {
    background-color: transparent;
    border: 2px solid var(--primary-color);
    color: var(--primary-color);
    padding: 8px 16px;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
}

.achievement-link:hover {
    background-color: var(--primary-color);
    color: #fff;
}

/* --- Projects Section --- */
.projects-section {
    padding: 80px 0;
    background-color: var(--background-color);
}

.projects-section h2 {
    font-size: 2.5em;
    text-align: center;
    margin-bottom: 50px;
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.project-card {
    background-color: var(--card-bg-color);
    padding: 30px 20px;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    text-align: center;    
    transition: transform 0.3s cubic-bezier(0.25, 0.8, 0.25, 1), box-shadow 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
}

.project-card:hover {
    transform: translateY(-12px) scale(1.05);
    box-shadow: 0 12px 28px rgba(0, 0, 0, 0.2);
}

.project-icon {
    font-size: 3em;
    color: var(--primary-color);
    margin-bottom: 15px;
}

.project-card h4 {
    margin-bottom: 10px;
}

.project-card p {
    margin-bottom: 15px;
    color: var(--secondary-color);
}

.project-link {
    background-color: transparent;
    border: 2px solid var(--primary-color);
    color: var(--primary-color);
    padding: 8px 16px;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
}

.project-link:hover {
    background-color: var(--primary-color);
    color: #fff;
}

/* --- Contact Section --- */
.contact-section {
    padding: 80px 0;
    background-color: var(--card-bg-color);
}

.contact-section h2 {
    font-size: 2.5em;
    text-align: center;
    margin-bottom: 10px;
}

.contact-subtitle {
    text-align: center;
    margin-bottom: 40px;
    color: var(--secondary-color);
    max-width: 500px;
    margin-left: auto;
    margin-right: auto;
}

#contact-form {
    max-width: 700px;
    margin: 0 auto;
}

.form-group {
    display: flex;
    gap: 20px;
    margin-bottom: 20px;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 15px;
    border-radius: var(--border-radius);
    border: 1px solid var(--border-color);
    background-color: var(--background-color);
    color: var(--text-color);
    font-family: 'Poppins', sans-serif;
    font-size: 1em;
    transition: border-color 0.3s, box-shadow 0.3s;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px color-mix(in srgb, var(--primary-color) 20%, transparent);
}

.form-submit {
    text-align: center;
}

#form-status {
    text-align: center;
    margin-top: 20px;
    font-weight: 600;
}

@media (max-width: 768px) {
    .form-group {
        flex-direction: column;
    }

    .contact-section .container {
        /* Gunakan flexbox untuk memusatkan form di dalamnya */
        display: flex;
        flex-direction: column;
        align-items: center;
    }

    .contact-section {
        padding: 60px 0; /* Kurangi padding vertikal */
    }

    .contact-section h2 {
        font-size: 2.2em; /* Perkecil ukuran judul */
    }

    .form-group input,
    .form-group textarea {
        padding: 12px; /* Kurangi padding di dalam input */
    }

    .form-group textarea {
        height: 100px; /* Kembalikan tinggi agar lebih seimbang dengan input */
        resize: vertical; /* Izinkan pengguna mengubah ukuran secara vertikal jika perlu */
    }

    .form-submit .cta-button {
        width: 100%; /* Buat tombol menjadi lebar penuh agar mudah disentuh */
        padding: 15px;
    }
}

/* --- Welcome Toast Message --- */
.welcome-toast {
    position: fixed;
    top: 80px; /* Di bawah navbar desktop */
    right: 20px;
    background-color: var(--card-bg-color);
    color: var(--text-color);
    padding: 15px 20px;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    z-index: 2000;
    display: flex;
    align-items: center;
    gap: 15px;
    transform: translateX(120%);
    opacity: 0;
    transition: transform 0.5s cubic-bezier(0.25, 0.8, 0.25, 1), opacity 0.5s ease;
}

.welcome-toast.show {
    transform: translateX(0);
    opacity: 1;
}

.welcome-toast i {
    color: var(--primary-color);
    font-size: 1.2em;
}

.welcome-toast p {
    margin: 0;
}

.toast-close-btn {
    background: none;
    border: none;
    color: var(--secondary-color);
    font-size: 1.5em;
    cursor: pointer;
    padding: 0 5px;
    margin-left: 10px;
    line-height: 1;
}

/* --- Footer --- */
footer {
    background-color: var(--text-color);
    color: #fff;
    text-align: center;
    padding: 30px 0;
    margin-top: auto;
}

.social-links a {
    color: #fff;
    font-size: 1.8em;
    margin: 0 15px;
    transition: color 0.3s ease, transform 0.3s ease;
}

.social-links a:hover {
    color: var(--primary-color);
    transform: translateY(-5px);
}

.copyright {
    margin-top: 20px;
    font-size: 0.9em;
    color: var(--secondary-color);
}

/* --- Theme Toggle Button --- */
.theme-toggle-button {
    background: none;
    border: none;
    color: var(--text-color);
    font-size: 1rem;
    cursor: pointer;
    padding: 20px;
    border-radius: 50%;
    width: 30px;
    height: 30px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: color 0.5s ease, background-color 0.5s ease;
    /* Added smooth fluid animation for transform */
    will-change: transform;
    transition-property: color, background-color, transform;
    transition-duration: 0.5s;
    transition-timing-function: cubic-bezier(0.4, 0, 0.2, 1);
    overflow: hidden;
}

.theme-toggle-button:hover {
    background-color: rgba(0, 0, 0, 0.1);
    border-radius: 50%;
}

.dark-mode .theme-toggle-button:hover {
    background-color: rgba(255, 255, 255, 0.1);
}

/* --- Music Toggle Button --- */
.music-toggle-button {
    background: none;
    border: none;
    color: var(--text-color);
    font-size: 1rem;
    cursor: pointer;
    padding: 20px;
    border-radius: 50%;
    width: 30px;
    height: 30px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: color 0.5s ease, background-color 0.5s ease;
    will-change: transform;
    transition-property: color, background-color, transform;
    transition-duration: 0.5s;
    transition-timing-function: cubic-bezier(0.4, 0, 0.2, 1);
}

.music-toggle-button:hover {
    background-color: rgba(0, 0, 0, 0.1);
}


/* --- Animations --- */
.fade-in-element {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in-element.visible {
    opacity: 1;
    transform: translateY(0);
}

#typing-text {
    background-color: rgba(255, 255, 255, 0.2);
    padding: 2px 4px;
    border-radius: 4px;
}

/* Efek kursor berkedip untuk typing animation */
#typing-text::after {
    content: '|';
    color: #007BFF;
    display: inline-block;
    margin-left: 3px;
    animation: blink 0.8s infinite step-end;
}

@keyframes blink {
    50% {
        opacity: 0;
    }
}

/* --- Responsive Design --- */
@media (max-width: 1024px) {
    .navbar .container {
        height: 65px;
    }

    .navbar .logo {
        font-size: 1.4em;
    }

    .navbar nav ul li {
        margin-left: 15px;
    }
}

@media (max-width: 768px) {
    
    .hero-content {
        flex-direction: column;
        text-align: center; /* Memastikan teks tetap di tengah */
        padding: 40px 20px; /* Menambah padding agar konten tidak terlalu mepet */
    }

    .achievement-item {
        flex-direction: column;
        align-items: flex-start;
        gap: 15px;
    }

    /* --- Penyesuaian Ukuran Navbar untuk Mobile --- */
    .navbar {
        /* Pindahkan navbar ke bawah layar pada tampilan mobile */
        top: auto;
        bottom: 10px; /* Lebih dekat ke tepi bawah */
        border: 1px solid var(--border-color); /* Tambahkan border agar lebih terlihat */
    }

    .navbar .container {
        height: 40px; /* Perkecil lagi tinggi navbar */
        padding: 0 8px; /* Perkecil padding horizontal */
        position: static; /* Reset posisi container */
    }

    .navbar nav ul {
        gap: 2px; /* Perkecil lagi jarak antar tombol */
    }

    .navbar nav a, .navbar button {
        width: 30px; /* Perkecil lagi lebar tombol */
        height: 30px; /* Perkecil lagi tinggi tombol */
        font-size: 1rem; /* Perkecil ukuran ikon di dalamnya */
    }

    .welcome-toast {
        top: 20px;
        left: 50%;
        transform: translate(-50%, -150%);
        width: 90%;
    }
    .welcome-toast.show {
        transform: translate(-50%, 0);
    }
}

@media (max-width: 480px) {
    /* Menggabungkan dan merapikan aturan untuk layar sangat kecil */
    .hero-content {
        padding: 30px 15px; /* Sedikit mengurangi padding untuk layar yang lebih kecil */
        gap: 25px;
        width: 100%;
    }

    .hero h1 {
        font-size: 1.8em;
    }

    .hero .subtitle {
        font-size: 1em;
    }

    .hero-image img {
        width: 200px;
        height: 200px;
    }

    .skills-section {
        padding: 60px 0;
    }

    .skills-section h2 {
        font-size: 2em;
        margin-bottom: 40px;
    }

    .skills-grid {
        grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
        gap: 20px;
    }

    .skill-card {
        padding: 30px 15px;
    }

    .achievements-section {
        padding: 60px 0;
    }

    .achievements-section h2 {
        font-size: 2em;
        margin-bottom: 40px;
    }

    .achievements-grid {
        grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
        gap: 20px;
    }

    .achievement-card {
        padding: 25px 15px;
    }

    .projects-section {
        padding: 60px 0;
    }

    .projects-section h2 {
        font-size: 2em;
        margin-bottom: 40px;
    }

    .projects-grid {
        grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
        gap: 20px;
    }

    .project-card {
        padding: 25px 15px;
    }

    footer {
        padding: 20px 0;
    }

    .social-links a {
        font-size: 1.5em;
        margin: 0 10px;
    }

    .copyright {
        font-size: 0.8em;
    }

    .modal-content {
        width: 90%;
        margin: 20% auto;
        padding: 15px;
    }

    .floating-image {
        max-width: 100%;
    }

    .navbar .logo {
        font-size: 1.2em;
    }
}

/* --- Modal for Achievements --- */
.modal {
    display: none;
    position: fixed;
    z-index: 2000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    overflow: auto;
    background-color: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(5px);
}

.modal-content {
    background-color: var(--card-bg-color);
    margin: 10% auto;
    padding: 30px;
    border: 1px solid #888;
    width: 90%;
    max-width: 600px;
    border-radius: var(--border-radius);
    text-align: center;
    position: relative;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.3);
}

.close-modal {
    color: #aaa;
    position: absolute;
    top: 10px;
    right: 15px;
    font-size: 28px;
    font-weight: bold;
    cursor: pointer;
}

.close-modal:hover,
.close-modal:focus {
    color: black;
    text-decoration: none;
}

.floating-image {
    max-width: 100%;
    height: auto;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    animation: float 3s ease-in-out infinite;
}

@keyframes float {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-10px);
    }
}

body.dark-mode .modal-content {
    background-color: var(--card-bg-color);
    color: var(--text-color);
}
/* --- Tooltip --- */
#tooltip {
    position: absolute;
    padding: 6px 10px;
    background-color: rgba(0,0,0,0.85);
    color: #fff;
    border-radius: 4px;
    font-size: 0.9em;
    pointer-events: none;
    opacity: 0;
    transition: opacity 0.2s ease;
    z-index: 9999;
}

#tooltip.visible {
    opacity: 1;
}

/* Menyesuaikan tombol di dalam navbar */
.theme-toggle-button, .music-toggle-button {
    background: none;
    border: none;
    cursor: pointer;
    padding: 0;
}