/* ====================== */
/* ===== Layout CSS ===== */
/* ====================== */
:root {
    --primary-green: #065f46;
    --secondary-green: #10b981;
    --light-green: #d1fae5;
    --accent-green: #34d399;
    --dark-green: #047857;
}

body {
    overscroll-behavior: contain;
    font-family:
        "Inter",
        system-ui,
        -apple-system,
        sans-serif;

    -webkit-user-select: none; /* Safari */
    -ms-user-select: none; /* IE 10+ and Edge */
    user-select: none;
}

/* Gradient */
.gradient-bg {
    background: #ffffff;
}

.footer {
    background: var(--primary-green);
}

/* Header Blur Effect on Scroll */
.header-scrolled {
    background: #ffffff;

    backdrop-filter: blur(12px) saturate(180%);
    -webkit-backdrop-filter: blur(12px) saturate(180%);
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.1);
}

/* Colors Utility */
.text-green {
    color: var(--primary-green);
}
.bg-green {
    background-color: var(--primary-green);
}
.bg-light-green {
    background-color: var(--light-green);
}
.border-green {
    border-color: var(--primary-green);
}

/* Loading Screen Custom Book Animation */
.book-loader {
    position: relative;
    width: 50px;
    height: 40px;
    margin: 0 auto;
    perspective: 200px;
}
.book-loader-page {
    position: absolute;
    width: 25px;
    height: 35px;
    background-color: var(--primary-green);
    border-radius: 2px 6px 6px 2px;
    right: 0;
    transform-origin: left center;
    transition: all 0.3s;
}
.book-loader-page:nth-child(1) {
    background-color: var(--dark-green);
    animation: flipPage 1.2s infinite linear both;
    z-index: 3;
}
.book-loader-page:nth-child(2) {
    background-color: var(--secondary-green);
    animation: flipPage 1.2s infinite linear 0.15s both;
    z-index: 2;
}
.book-loader-page:nth-child(3) {
    background-color: var(--accent-green);
    animation: flipPage 1.2s infinite linear 0.3s both;
    z-index: 1;
}

@keyframes flipPage {
    0% {
        transform: rotateY(0deg);
    }
    50% {
        transform: rotateY(-180deg);
    }
    100% {
        transform: rotateY(0deg);
    }
}

/* Transisi Halus */
.smooth-transition {
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Offcanvas Styling */
.offcanvas {
    background: linear-gradient(to bottom, #ffffff, #f0fdf4);
}

.offcanvas-link {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem 1rem;
    color: #374151;
    transition: all 0.2s ease;
    border-radius: 0.75rem;
    font-size: 0.9375rem;
}
.offcanvas-link:hover {
    background-color: #ecfdf5;
    color: var(--primary-green);
    transform: translateX(4px);
}

/* Hover Effect untuk Tombol */
.btn-hover-effect {
    position: relative;
    overflow: hidden;
}
.btn-hover-effect::before {
    content: "";
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(
        90deg,
        transparent,
        rgba(255, 255, 255, 0.3),
        transparent
    );
    transition: left 0.5s;
}
.btn-hover-effect:hover::before {
    left: 100%;
}

/* ==========================================
   BOTTOM NAVIGATION MOBILE
   ========================================== */

#bottomNav {
    transform: translateY(100%);
    transition: transform 0.4s cubic-bezier(0.22, 1, 0.36, 1);
}

#bottomNav.show-nav {
    transform: translateY(0);
}

/* Efek Active dan Hover pada Item */
.active-nav-item {
    position: relative;
}

.active-nav-item::before {
    content: "";
    position: absolute;
    top: -8px;
    left: 50%;
    transform: translateX(-50%) scaleX(0);
    width: 20px;
    height: 3px;
    background-color: #059669;
    border-radius: 10px;
    transition: transform 0.3s ease;
}

.active-nav-item.text-emerald-600::before {
    transform: translateX(-50%) scaleX(1);
}

/* Smooth transition untuk teks dan ikon saat aktif */
.active-nav-item.text-emerald-600 {
    color: #006638;
}
.active-nav-item.text-emerald-600 div {
    background-color: #d1fae5;
}

/* Media Query: Sembunyikan di Desktop, Tampilkan di Mobile */
@media (min-width: 768px) {
    #bottomNav {
        transform: translateY(100%) !important; /* Force sembunyi di desktop */
    }
}