/* =============================================
   VARIABEL WARNA — mudah diubah dari satu tempat
   ============================================= */
:root {
    --navy-dark: #0A1A2F;      /* warna latar utama */
    --navy-soft: #1B3B63;      /* navy lebih terang untuk hover */
    --navy-card: #0F2340;      /* warna card sedikit lebih terang dari bg */
    --cream-main: #F5F1E8;     /* warna teks & elemen terang */
    --cream-soft: #EDE7DB;     /* cream sedikit lebih gelap */
    --accent: #4DA3FF;         /* biru accent untuk highlight */
    --accent-glow: rgba(77, 163, 255, 0.25); /* warna glow biru transparan */
}

/* =============================================
   RESET — menghapus margin/padding bawaan browser
   ============================================= */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Outfit', sans-serif;
}

/* =============================================
   SCROLL SMOOTH — saat klik link navigasi,
   halaman bergerak halus bukan langsung lompat
   ============================================= */
html {
    scroll-behavior: smooth;
}

/* =============================================
   BODY — latar belakang dengan gradien halus
   agar tidak terlalu flat/datar
   ============================================= */
body {
    background: linear-gradient(160deg, #0A1A2F 0%, #0D2040 60%, #0A1A2F 100%);
    color: var(--cream-main);
    min-height: 100vh;
}

/* =============================================
   CONTAINER — membatasi lebar konten agar
   tidak terlalu lebar di layar besar
   ============================================= */
.container {
    max-width: 1100px;
    margin: auto;
    padding: 70px 20px;
}

/* =============================================
   ANIMASI FADE-IN — elemen muncul dari bawah
   saat halaman pertama kali dibuka
   @keyframes = mendefinisikan gerakan animasi
   ============================================= */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px); /* mulai dari 30px di bawah */
    }
    to {
        opacity: 1;
        transform: translateY(0);    /* bergerak ke posisi normal */
    }
}

/* Animasi khusus untuk foto — muncul dari kanan */
@keyframes fadeInRight {
    from {
        opacity: 0;
        transform: translateX(30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

/* =============================================
   HERO SECTION — bagian utama halaman
   menggunakan CSS Grid untuk 2 kolom
   ============================================= */
.hero {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: 50px;
    align-items: center;
    margin-bottom: 90px;

    /* Terapkan animasi fadeInUp saat halaman dibuka */
    animation: fadeInUp 0.8s ease forwards;
}

/* =============================================
   BADGE — label kecil "PORTFOLIO" di atas nama
   border transparan memberi kesan premium
   ============================================= */
.badge {
    display: inline-block;
    background: rgba(77, 163, 255, 0.1);
    border: 1px solid rgba(77, 163, 255, 0.3);
    padding: 8px 20px;
    border-radius: 30px;
    font-size: 0.75rem;
    letter-spacing: 2px;
    margin-bottom: 18px;
    color: var(--accent);
}

.hero h1 {
    font-size: 3.4rem;
    line-height: 1.1;
    margin-bottom: 20px;
}

/* Nama berwarna accent dengan efek glow teks */
.hero span {
    color: var(--accent);
    text-shadow: 0 0 20px var(--accent-glow); /* efek cahaya di sekitar teks */
}

.hero p {
    font-size: 1.05rem;
    opacity: 0.8;
    line-height: 1.8;
}

/* =============================================
   FOTO HERO — wrapper untuk foto + efek glow
   ============================================= */
.hero-img-wrapper {
    position: relative;
    display: inline-block;
    justify-self: end;

    /* Animasi foto muncul dari kanan, delay 0.3s */
    animation: fadeInRight 0.9s ease 0.3s both;
}

.hero-img-wrapper img {
    width: 100%;
    max-width: 360px;
    border-radius: 28px;
    position: relative;
    z-index: 2;
    border: 2px solid rgba(77, 163, 255, 0.2); /* border tipis biru */

    /* Transisi smooth saat hover */
    transition: transform 0.4s ease, box-shadow 0.4s ease;
}

/* Efek hover pada foto — sedikit membesar + glow */
.hero-img-wrapper img:hover {
    transform: scale(1.03);
    box-shadow: 0 20px 60px rgba(77, 163, 255, 0.3);
}

/* Elemen blur di belakang foto sebagai efek glow */
.hero-img-bg {
    position: absolute;
    inset: 0;
    border-radius: 28px;
    background: rgba(77, 163, 255, 0.2); /* glow biru */
    filter: blur(25px);
    transform: scale(1.08);
    z-index: 1;
}

/* =============================================
   SECTION — setiap bagian konten
   animasi muncul saat halaman dibuka
   ============================================= */
section {
    margin-bottom: 80px;
    animation: fadeInUp 0.8s ease forwards;
}

section h2 {
    font-size: 2.3rem;
    margin-bottom: 8px;
    position: relative;
    display: inline-block;
}

/* Garis bawah dekoratif di bawah judul section */
section h2::after {
    content: '';
    display: block;
    width: 50px;
    height: 3px;
    background: var(--accent);
    border-radius: 2px;
    margin-top: 8px;

    /* Glow pada garis */
    box-shadow: 0 0 10px var(--accent-glow);
}

section > p {
    max-width: 760px;
    line-height: 1.9;
    opacity: 0.85;
    margin-top: 16px;
}

/* =============================================
   SKILL CARDS — kartu keahlian
   glassmorphism = efek kaca transparan modern
   ============================================= */
.skills {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 22px;
    margin-top: 34px;
}

.skill-card {
    background: rgba(255, 255, 255, 0.04); /* transparan seperti kaca */
    backdrop-filter: blur(10px);            /* blur konten di belakang card */
    padding: 28px 24px;
    border-radius: 20px;
    border: 1px solid rgba(255, 255, 255, 0.08); /* border tipis */

    /* Transisi semua properti selama 0.35 detik */
    transition: transform 0.35s ease, background 0.35s ease,
                border-color 0.35s ease, box-shadow 0.35s ease;
}

/* Efek hover card — naik ke atas + glow biru */
.skill-card:hover {
    transform: translateY(-10px);
    background: rgba(77, 163, 255, 0.08);
    border-color: rgba(77, 163, 255, 0.3);
    box-shadow: 0 15px 40px rgba(77, 163, 255, 0.15);
}

.skill-card h3 {
    margin-bottom: 10px;
    color: var(--accent);
    font-size: 1rem;
}

.skill-card p {
    font-size: 0.9rem;
    opacity: 0.75;
    line-height: 1.6;
}

/* =============================================
   CONTACT SECTION — bagian hubungi saya
   gradien cream dengan sudut membulat
   ============================================= */
.contact {
    background: linear-gradient(135deg, var(--cream-main), var(--cream-soft));
    border-radius: 30px;
    padding: 60px 40px;
    text-align: center;
    color: var(--navy-dark);

    /* Shadow besar untuk kesan mengambang */
    box-shadow: 0 30px 80px rgba(0, 0, 0, 0.3);
}

.contact h2 {
    margin-bottom: 14px;
}

/* Override garis bawah untuk section contact (warna navy) */
.contact h2::after {
    background: var(--navy-soft);
    box-shadow: none;
    margin-inline: auto;
}

.contact p {
    margin-bottom: 30px;
    opacity: 0.8;
    max-width: 520px;
    margin-inline: auto;
    line-height: 1.7;
}

/* =============================================
   TOMBOL — efek hover dengan glow dan gerak naik
   ============================================= */
.btn {
    display: inline-block;
    padding: 15px 40px;
    background: var(--navy-dark);
    color: var(--cream-main);
    border-radius: 32px;
    text-decoration: none;
    font-weight: 500;
    letter-spacing: 0.5px;

    /* Transisi semua properti */
    transition: transform 0.3s ease, background 0.3s ease,
                box-shadow 0.3s ease;
}

/* Hover tombol — naik sedikit + glow gelap */
.btn:hover {
    background: var(--navy-soft);
    transform: translateY(-3px);
    box-shadow: 0 10px 30px rgba(10, 26, 47, 0.4);
}

/* Saat tombol diklik — kembali ke posisi semula */
.btn:active {
    transform: translateY(0);
}

/* =============================================
   FOOTER
   ============================================= */
footer {
    text-align: center;
    margin-top: 70px;
    font-size: 0.85rem;
    opacity: 0.5;
    padding-bottom: 30px;
}

/* =============================================
   RESPONSIVE — tampilan di HP (layar < 768px)
   Grid 2 kolom diubah jadi 1 kolom
   ============================================= */
@media (max-width: 768px) {
    .hero {
        grid-template-columns: 1fr; /* 1 kolom di HP */
        text-align: center;
        gap: 30px;
    }

    .hero h1 {
        font-size: 2.4rem; /* ukuran font lebih kecil di HP */
    }

    .hero-img-wrapper {
        justify-self: center;
        margin-top: 10px;
    }

    .hero-img-wrapper img {
        max-width: 280px;
    }

    section h2 {
        font-size: 1.9rem;
    }

    /* Garis bawah judul di-center untuk tampilan HP */
    section h2::after {
        margin-inline: auto;
    }

    .contact {
        padding: 40px 24px;
    }

    .skills {
        grid-template-columns: 1fr 1fr; /* 2 kolom di HP */
    }
}

/* Layar sangat kecil (< 480px) */
@media (max-width: 480px) {
    .skills {
        grid-template-columns: 1fr; /* 1 kolom di HP kecil */
    }

    .hero h1 {
        font-size: 2rem;
    }
}