:root {
    --primary-arc: #800000;    /* Merah Maron */
    --primary-gold: #d4af37;   /* Emas */
    --danger-red: #a01515;     
    --bg-stark: #ffffff;       /* DIUBAH: Menjadi Putih Bersih Polos */
    --card-stark: #ffffff;     /* Kotak tetap putih */
    --text-stark: #2c3e50;     /* Teks abu-abu gelap agar tetap terbaca tajam */
}

body {
    font-family: 'Segoe UI', 'Roboto', sans-serif;
    background-color: var(--bg-stark);
    color: var(--text-stark);
    margin: 0;
    line-height: 1.6;
    background-image: none;    /* DIUBAH: Menghapus gradasi agar warna putihnya merata */
}

/* --- NAVIGASI (Glassmorphic Putih) --- */
nav {
    background: rgba(255, 255, 255, 0.85);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    padding: 1rem;
    position: sticky;
    top: 0;
    z-index: 1000;
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 25px;
    border-bottom: 2px solid var(--primary-arc);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05);
}

nav a {
    color: var(--text-stark);
    text-decoration: none;
    font-weight: bold;
    text-transform: uppercase;
    font-size: 0.9rem;
    transition: 0.3s;
}

nav a:hover, nav a.active {
    color: var(--primary-arc);
}

/* --- CONTAINER --- */
.container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 40px 20px;
}

/* --- JUDUL UTAMA & SUBTITLE --- */
h1, h2, h3 {
    text-align: center;
    color: var(--primary-arc);
    text-transform: uppercase;
    letter-spacing: 2px;
    font-weight: 800;
}

#title {
    font-size: 2.8rem;
    margin-bottom: 10px;
    color: var(--primary-arc);
    text-shadow: none; /* Menghapus glow neon gelap */
}

h2.subtitle {
    font-weight: 500;
    color: var(--primary-gold);
    margin-top: 0;
    font-size: 1.1rem;
    letter-spacing: 1px;
}

/* ==========================================================================
   HALAMAN 1: GROUP PROFILE GRID (Gaya Kotak Terang)
   ========================================================================== */
.profile-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 35px;
    margin-top: 40px;
}

.profile-item {
    text-decoration: none;
    color: var(--text-stark);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 15px;
    font-weight: bold;
    text-transform: uppercase;
    letter-spacing: 1px;
    font-size: 0.9rem;
    text-align: center;
    background-color: var(--card-stark);
    padding: 30px 20px;
    border-radius: 16px;
    border: 1px solid rgba(0, 0, 0, 0.04); 
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.04);
    box-sizing: border-box;
    transition: transform 0.3s, border-color 0.3s, box-shadow 0.3s;
}

.img-profil {
    width: 140px;
    height: 140px;
    border-radius: 50%;
    object-fit: cover;
    border: 3px solid var(--primary-arc); /* Lingkaran berganti jadi Maron */
    padding: 5px;
    background: #ffffff;
    box-shadow: 0 4px 15px rgba(128, 0, 0, 0.1);
    transition: 0.3s;
}

/* Hover Efek Kartu Profil */
.profile-item:hover {
    transform: translateY(-8px);
    border-color: var(--primary-arc);
    box-shadow: 0 15px 30px rgba(128, 0, 0, 0.12);
}

.profile-item:hover .img-profil {
    border-color: var(--primary-gold);
    box-shadow: 0 0 20px rgba(212, 175, 55, 0.4);
    transform: scale(1.05);
}

/* ==========================================================================
   HALAMAN 2: SMART FIRE SYSTEM / DETAIL PROYEK
   ========================================================================== */
/* Hero Card Utama */
.hero-card {
    background: var(--card-stark);
    border-radius: 15px;
    padding: 40px;
    margin: 40px 0;
    display: flex;
    align-items: center;
    gap: 30px;
    border: 1px solid rgba(128, 0, 0, 0.08);
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.05);
    position: relative;
    overflow: hidden;
}

/* Efek Putaran Aura Belakang (Disesuaikan ke warna Emas Transparan) */
.hero-card::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: conic-gradient(transparent, var(--primary-gold), transparent 30%);
    animation: rotateArc 15s linear infinite;
    opacity: 0.12;
}

@keyframes rotateArc {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.hero-text { flex: 1.3; position: relative; z-index: 1; }
.hero-img { flex: 1; text-align: center; position: relative; z-index: 1; }

.stark-header {
    color: var(--danger-red);
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 3px;
    display: block;
    margin-bottom: 10px;
    font-weight: 700;
}

.hero-text h3 {
    text-align: left;
    font-size: 1.8rem;
    margin: 0 0 20px 0;
    color: var(--primary-arc);
}

/* Gambar Skema IoT (Mengganti glow cyan tebal menjadi glow maron/shadow lembut) */
.hero-img img { 
    width: 100%;
    max-width: 380px; 
    filter: drop-shadow(0 10px 25px rgba(128, 0, 0, 0.15));
    border-radius: 12px;
    border: 3px solid var(--primary-arc);
    padding: 8px;
    background: #ffffff;
}

/* --- SECTION KOMPONEN DAN SPESIFIKASI --- */
.section-title {
    color: var(--primary-arc);
    margin-top: 60px;
}

.component-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 25px;
    margin-top: 40px;
}

.comp-box {
    background: var(--card-stark);
    padding: 30px;
    border-radius: 12px;
    border: 1px solid rgba(0, 0, 0, 0.05);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.02);
    transition: 0.4s;
    position: relative;
}

.comp-box:hover {
    transform: translateY(-6px);
    border-color: var(--primary-arc);
    box-shadow: 0 15px 30px rgba(128, 0, 0, 0.1);
}

.comp-box b {
    display: block;
    font-size: 1.3rem;
    color: var(--primary-arc);
    margin-bottom: 15px;
    text-transform: uppercase;
}

.reason {
    margin-top: 20px;
    font-size: 0.9rem;
    padding-top: 15px;
    border-top: 1px solid rgba(0, 0, 0, 0.05);
    color: #6c757d;
    font-style: italic;
}

/* --- TABEL SPESIFIKASI --- */
table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 30px;
    background: var(--card-stark);
    border-radius: 10px;
    overflow: hidden;
    border: 1px solid rgba(128, 0, 0, 0.1);
}

th, td {
    padding: 18px;
    text-align: left;
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
}

th { 
    background: var(--primary-arc); 
    color: #ffffff; 
    text-transform: uppercase;
    letter-spacing: 1px;
}

tr:nth-child(even) { background: rgba(0, 0, 0, 0.01); }
tr:hover td { color: var(--primary-arc); background: rgba(128, 0, 0, 0.02); }

/* --- RESPONSIVE SCREEN --- */
@media (max-width: 768px) {
    .hero-card { flex-direction: column-reverse; text-align: center; padding: 25px; }
    .hero-text h3 { text-align: center; }
    #title { font-size: 2rem; }
}