/* 
 * Yayasan Nurul Hikmah Tugu Liyep - Main Stylesheet
 * Standard: Modern Web, Clean Code, Responsive, Vanilla CSS 
 */

/* ==========================================================================
   1. CSS Variables & Theme (Islamic Modern / Education Theme)
   ========================================================================== */
:root {
    /* Primary Colors: Soft Greens */
    --clr-primary-50: #ecfdf5;
    --clr-primary-100: #d1fae5;
    --clr-primary-500: #10b981; /* Emerald/Soft Green base */
    --clr-primary-600: #059669;
    --clr-primary-700: #047857;

    /* Secondary Colors: Dark Blue / Elegant Navy */
    --clr-secondary-800: #1e293b; 
    --clr-secondary-900: #0f172a;

    /* Neutrals: White, Cream, Light Gray */
    --clr-neutral-50: #f8fafc; /* very light gray/white */
    --clr-neutral-100: #f1f5f9;
    --clr-neutral-200: #e2e8f0;
    --clr-neutral-500: #64748b;
    --clr-neutral-700: #334155;
    
    /* Accents for categorical */
    --clr-accent-cream: #fef3c7; /* Amber/Cream */
    --clr-accent-gold: #d97706;

    /* Typography */
    --font-heading: 'Outfit', sans-serif;
    --font-body: 'Inter', sans-serif;

    /* Spacing & Layout */
    --container-max-width: 1200px;
    --container-padding: 1.5rem;
    --section-padding-y: 5rem;
    --border-radius-sm: 0.375rem;
    --border-radius-md: 0.75rem;
    --border-radius-lg: 1.5rem;

    /* Shadows & Effects */
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    --shadow-soft: 0 20px 40px -15px rgb(16 185 129 / 0.15); /* primary soft shadow */
    
    --transition-fast: 200ms ease-in-out;
    --transition-normal: 300ms ease-in-out;
    --transition-smooth: 500ms cubic-bezier(0.4, 0, 0.2, 1);
}

/* ==========================================================================
   2. Reset & Base Styles
   ========================================================================== */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    -webkit-tap-highlight-color: transparent;
}

html {
    scroll-behavior: smooth;
    font-size: 16px; 
}

body {
    font-family: var(--font-body);
    color: var(--clr-neutral-700);
    background-color: #ffffff;
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    color: var(--clr-secondary-900);
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 1rem;
}

a {
    text-decoration: none;
    color: inherit;
    transition: color var(--transition-fast);
}

ul {
    list-style: none;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

button, input, select, textarea {
    font-family: inherit;
    border: none;
    outline: none;
}

input:focus, select:focus, textarea:focus {
    box-shadow: 0 0 0 3px var(--clr-primary-100);
}

/* Utilities */
.container {
    width: 100%;
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding: 0 var(--container-padding);
}
.section { padding: var(--section-padding-y) 0; }
.bg-light { background-color: var(--clr-neutral-50); }
.bg-primary { background-color: var(--clr-primary-700); }
.text-center { text-align: center; }
.text-white { color: #ffffff !important; }
.text-primary { color: var(--clr-primary-600); }
.text-capitalize { text-transform: capitalize; }
.mx-auto { margin-left: auto; margin-right: auto; }
.d-inline-block { display: inline-block; }
.w-100 { width: 100%; }
.mt-3 { margin-top: 1rem; }
.mt-4 { margin-top: 1.5rem; }
.pt-3 { padding-top: 1rem; }
.flex-between { display: flex; justify-content: space-between; align-items: flex-start; }
.align-center { align-items: center; }

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    border-radius: var(--border-radius-md);
    font-weight: 500;
    font-size: 1rem;
    cursor: pointer;
    transition: all var(--transition-fast);
}
.btn-sm {
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
}
.btn-primary {
    background-color: var(--clr-primary-600);
    color: #fff;
}
.btn-primary:hover {
    background-color: var(--clr-primary-700);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}
.btn-secondary {
    background-color: #fff;
    color: var(--clr-secondary-900);
    box-shadow: var(--shadow-sm);
}
.btn-secondary:hover {
    background-color: var(--clr-neutral-50);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}
.btn-outline-primary {
    background-color: transparent;
    color: var(--clr-primary-600);
    border: 1px solid var(--clr-primary-600);
}
.btn-outline-primary:hover {
    background-color: var(--clr-primary-50);
}
.btn-block {
    width: 100%;
}

/* Material Symbols fix alignment */
.material-symbols-outlined {
    font-variation-settings: 'FILL' 1, 'wght' 400, 'GRAD' 0, 'opsz' 24;
    vertical-align: middle;
}
.btn .material-symbols-outlined { font-size: 20px; }

/* ==========================================================================
   3. Header / Navbar
   ========================================================================== */
.navbar {
    position: fixed;
    top: 0; left: 0; width: 100%;
    z-index: 1000;
    transition: all var(--transition-normal);
    background-color: transparent;
    padding: 1.5rem 0;
}
/* Scrolled state */
.navbar.scrolled {
    background-color: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    padding: 1rem 0;
    box-shadow: var(--shadow-sm);
}
/* White text when top (transparent), inherit when scrolled - handled by nested logic if complex, but simple version: */
.navbar .nav-link, .navbar .logo-title, .navbar .logo-subtitle { color: var(--clr-secondary-900); }
.logo-icon { color: var(--clr-primary-600); margin-right: 0.5rem; font-size: 28px; }
.header-logo-img { width: 42px; height: 42px; object-fit: contain; margin-right: 0.75rem; border-radius: 6px; }
.footer-logo-img { width: 50px; height: 50px; object-fit: contain; margin-right: 0.75rem; border-radius: 6px; }

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.logo { display: flex; align-items: center; }
.logo-text { display: flex; flex-direction: column; line-height: 1.1; }
.logo-title { font-family: var(--font-heading); font-weight: 700; font-size: 1.1rem; }
.logo-subtitle { font-size: 0.75rem; color: var(--clr-neutral-500); font-weight: 500; text-transform: uppercase; letter-spacing: 1px; }

.nav-menu .nav-list {
    display: flex;
    gap: 2rem;
}
.nav-link {
    font-weight: 500;
    font-size: 0.95rem;
    position: relative;
    padding-bottom: 0.25rem;
}
.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0; left: 0;
    width: 0; height: 2px;
    background-color: var(--clr-primary-600);
    transition: width var(--transition-normal);
    border-radius: 2px;
}
.nav-link:hover::after, .nav-link.active::after { width: 100%; }
.nav-link.active { color: var(--clr-primary-700); }

.menu-toggle {
    display: none;
    background: none;
    color: var(--clr-secondary-900);
    font-size: 28px;
    cursor: pointer;
    transition: transform var(--transition-fast);
}

/* ==========================================================================
   4. Hero Section
   ========================================================================== */
.hero {
    position: relative;
    padding-top: 180px; /* Offset for navbar */
    padding-bottom: 120px;
    min-height: 100vh;
    display: flex;
    align-items: center;
    background-color: var(--clr-primary-50);
    overflow: hidden;
}
/* Decor Blob / Pattern */
.hero-overlay {
    position: absolute;
    top: 0; right: 0; bottom: 0; left: 0;
    background: 
        radial-gradient(circle at 90% 10%, rgba(16,185,129,0.08) 0%, transparent 40%),
        radial-gradient(circle at 10% 90%, rgba(59,130,246,0.05) 0%, transparent 40%);
    z-index: 1;
}
.hero-container { position: relative; z-index: 2; }
.hero-content {
    max-width: 700px;
}
.badge {
    display: inline-block;
    padding: 0.25rem 1rem;
    background-color: var(--clr-primary-100);
    color: var(--clr-primary-700);
    border-radius: 9999px;
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
    letter-spacing: 0.5px;
}
.hero-title {
    font-size: clamp(2.5rem, 5vw, 4rem);
    line-height: 1.1;
    margin-bottom: 1.5rem;
    color: var(--clr-secondary-900);
}
.hero-desc {
    font-size: 1.125rem;
    color: var(--clr-neutral-500);
    margin-bottom: 2rem;
    max-width: 600px;
}
.hero-buttons { display: flex; gap: 1rem; flex-wrap: wrap; }

.hero-stats {
    margin-top: 4rem;
    display: flex;
    gap: 2rem;
    border-top: 1px solid var(--clr-neutral-200);
    padding-top: 2rem;
}
.stat-card { display: flex; flex-direction: column; align-items: flex-start; }
.stat-value { font-size: 1.75rem; color: var(--clr-primary-600); margin-bottom: 0.25rem; font-family: var(--font-heading); }
.stat-label { font-size: 0.875rem; color: var(--clr-neutral-500); font-weight: 500; }
.stat-icon { font-size: 2rem; color: var(--clr-primary-600); margin-bottom: 0.25rem; }

/* ==========================================================================
   5. Section Header & Common
   ========================================================================== */
.section-badge {
    display: inline-block;
    color: var(--clr-primary-600);
    font-weight: 600;
    font-size: 0.875rem;
    letter-spacing: 1px;
    text-transform: uppercase;
    margin-bottom: 0.5rem;
}
.section-title { font-size: clamp(2rem, 3vw, 2.5rem); margin-bottom: 1rem; }
.section-title .highlight { color: var(--clr-primary-600); }
.section-desc { font-size: 1.125rem; color: var(--clr-neutral-500); max-width: 650px; }
.section-header .section-desc { margin: 0 auto; }

/* ==========================================================================
   6. Tentang (About) Section
   ========================================================================== */
.about-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}
.about-image-wrapper { position: relative; }
/* Placeholder abstract design instead of raw image */
.placeholder-img {
    background: linear-gradient(135deg, var(--clr-primary-100) 0%, var(--clr-primary-50) 100%);
    display: flex; align-items: center; justify-content: center;
}
.about-image {
    width: 100%; height: 500px;
    border-radius: var(--border-radius-lg);
    overflow: hidden;
    position: relative;
}
.about-img {
    width: 100%; height: 100%; object-fit: cover;
    border-radius: var(--border-radius-lg);
    transition: transform var(--transition-smooth);
}
.about-image:hover .about-img { transform: scale(1.03); }
.xl-icon { font-size: 80px; color: var(--clr-primary-500); opacity: 0.5; }

.floating-card {
    position: absolute;
    bottom: -30px; right: -30px;
    background-color: #fff;
    padding: 1.5rem;
    border-radius: var(--border-radius-md);
    box-shadow: var(--shadow-lg);
    display: flex; align-items: center; gap: 1rem;
    border-left: 4px solid var(--clr-primary-600);
}
.floating-card h4 { margin-bottom: 0; font-size: 1rem; }
.floating-card p { font-size: 0.875rem; color: var(--clr-neutral-500); margin-bottom: 0; }

.vision-mission { margin-top: 2rem; display: flex; flex-direction: column; gap: 1.5rem; }
.vm-item { display: flex; gap: 1rem; }
.vm-icon {
    width: 48px; height: 48px; flex-shrink: 0;
    background-color: var(--clr-primary-50);
    color: var(--clr-primary-600);
    border-radius: 50%;
    display: flex; align-items: center; justify-content: center;
}
.vm-text h3 { font-size: 1.25rem; margin-bottom: 0.5rem; }
.vm-text p { color: var(--clr-neutral-500); }

/* Custom Check List */
.check-list { display: flex; flex-direction: column; gap: 0.75rem; }
.check-list li {
    display: flex; align-items: flex-start; gap: 0.5rem; color: var(--clr-neutral-500);
}
.check-list li::before {
    content: '\e86c'; /* Material Symbols check_circle */
    font-family: 'Material Symbols Outlined';
    color: var(--clr-primary-600);
    font-weight: 400;
}
.check-light li { color: #d1fae5; }
.check-light li::before { color: #fff; }

/* ==========================================================================
   7. Unit / Lembaga Section
   ========================================================================== */
.grid-cards {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}
.unit-card {
    background: #fff;
    border: 1px solid var(--clr-neutral-100);
    border-radius: var(--border-radius-lg);
    padding: 2rem;
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
}
.unit-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-soft);
    border-color: var(--clr-primary-100);
}
.card-icon {
    width: 64px; height: 64px;
    border-radius: var(--border-radius-md);
    display: flex; align-items: center; justify-content: center;
    margin-bottom: 1.5rem; overflow: hidden;
}
.card-icon .material-symbols-outlined { font-size: 32px; }
.card-logo-img { width: 100%; height: 100%; object-fit: cover; }
.card-badge {
    font-size: 0.75rem; font-weight: 600;
    padding: 0.2rem 0.6rem; border-radius: 9999px;
    margin-bottom: 1rem; display: inline-block;
}
.card-title { font-size: 1.3rem; margin-bottom: 0.75rem; }
.card-desc { font-size: 0.95rem; color: var(--clr-neutral-500); margin-bottom: 1.5rem; line-height: 1.5; }
.card-footer { border-top: 1px solid var(--clr-neutral-100); padding-top: 1.5rem; margin-top: auto; }

/* ==========================================================================
   8. Galeri Section
   ========================================================================== */
.gallery-filters {
    display: flex; gap: 0.5rem; flex-wrap: wrap; margin-top: 1rem;
}
.filter-btn {
    padding: 0.4rem 1rem;
    border-radius: 9999px;
    background-color: var(--clr-neutral-100);
    color: var(--clr-neutral-500);
    font-size: 0.875rem; font-weight: 500;
    transition: all var(--transition-fast); cursor: pointer;
}
.filter-btn:hover, .filter-btn.active {
    background-color: var(--clr-primary-600);
    color: #fff;
}
.grid-gallery {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 1.5rem;
    margin-top: 3rem;
}
.gallery-item {
    border-radius: var(--border-radius-md); overflow: hidden;
    position: relative; box-shadow: var(--shadow-sm); cursor: pointer;
}
.gallery-img-wrapper { position: relative; aspect-ratio: 4/3; background-color: var(--clr-neutral-200); }
.gallery-img-wrapper img { width: 100%; height: 100%; object-fit: cover; transition: transform var(--transition-smooth); }
.gallery-overlay {
    position: absolute; inset: 0; background-color: rgba(15, 23, 42, 0.5);
    display: flex; align-items: center; justify-content: center;
    color: #fff; opacity: 0; transition: opacity var(--transition-normal);
}
.gallery-overlay span { font-size: 40px; transform: scale(0.5); transition: transform var(--transition-normal); }
.gallery-item:hover .gallery-img-wrapper img { transform: scale(1.05); }
.gallery-item:hover .gallery-overlay { opacity: 1; }
.gallery-item:hover .gallery-overlay span { transform: scale(1); }

.gallery-caption {
    position: absolute; bottom: 0; width: 100%;
    padding: 1.5rem;
    background: linear-gradient(to top, rgba(15, 23, 42, 0.9) 0%, transparent 100%);
    color: #fff;
}
.gallery-caption h4 { color: #fff; font-size: 1rem; margin-bottom: 0.25rem; font-family: var(--font-body); }
.gallery-cat { font-size: 0.75rem; color: var(--clr-primary-100); text-transform: uppercase; letter-spacing: 1px; font-weight: 600; }

/* ==========================================================================
   9. Struktur & Kepercayaan (Struct)
   ========================================================================== */
.struct-sect { position: relative; }
.struct-container { display: grid; grid-template-columns: 1fr 1fr; gap: 4rem; align-items: center; }
.struct-title { color: #fff; }
.struct-desc { color: var(--clr-primary-100); margin-bottom: 2rem; }
.struct-cards { display: flex; flex-direction: column; gap: 1.5rem; }
.info-card {
    background-color: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(5px); -webkit-backdrop-filter: blur(5px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: var(--border-radius-md);
    padding: 1.5rem;
}
.info-card h4 { color: #fff; margin-bottom: 0.5rem; }
.info-card p { color: #d1fae5; font-size: 0.9rem; margin-bottom: 0; }
.info-card .material-symbols-outlined { color: #fff; margin-bottom: 0.5rem; font-size: 32px; opacity: 0.9; }

/* ==========================================================================
   10. Kontak
   ========================================================================== */
.contact-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    margin-top: 3rem;
}
.contact-info { display: flex; flex-direction: column; gap: 1.5rem; }
.contact-card {
    background: #fff; padding: 1.5rem; border-radius: var(--border-radius-md);
    display: flex; gap: 1rem; box-shadow: var(--shadow-sm);
}
.contact-card .icon-wrap {
    width: 48px; height: 48px; border-radius: 50%;
    background-color: var(--clr-primary-50); color: var(--clr-primary-600);
    display: flex; align-items: center; justify-content: center; flex-shrink: 0;
}
.contact-details h3 { font-size: 1.1rem; margin-bottom: 0.25rem; }
.contact-details p { color: var(--clr-neutral-500); font-size: 0.9rem; margin-bottom: 0; }



.contact-form {
    background: #fff; padding: 2.5rem; border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-md);
}
.contact-form h3 { margin-bottom: 1.5rem; font-size: 1.5rem; }
.form-group { margin-bottom: 1.5rem; display: flex; flex-direction: column; gap: 0.5rem; }
.form-group label { font-size: 0.875rem; font-weight: 500; color: var(--clr-secondary-900); }
.form-group input, .form-group select, .form-group textarea {
    padding: 0.75rem 1rem;
    border: 1px solid var(--clr-neutral-200);
    border-radius: var(--border-radius-sm);
    font-size: 1rem; transition: border-color var(--transition-fast);
    background-color: var(--clr-neutral-50);
}
.form-group input:focus, .form-group select:focus, .form-group textarea:focus {
    border-color: var(--clr-primary-500); background-color: #fff;
}

/* ==========================================================================
   11. Footer
   ========================================================================== */
.footer {
    background-color: var(--clr-secondary-900);
    color: var(--clr-neutral-200);
    padding-top: 5rem;
}
.footer-container {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 4rem;
    margin-bottom: 3rem;
}
.footer-desc {
    margin-top: 1rem; margin-bottom: 1.5rem; max-width: 350px; font-size: 0.95rem; line-height: 1.6;
}


.footer-links h3 { color: #fff; font-size: 1.1rem; margin-bottom: 1.5rem; }
.footer-links ul { display: flex; flex-direction: column; gap: 0.75rem; }
.footer-links a { color: var(--clr-neutral-200); font-size: 0.95rem; }
.footer-links a:hover { color: var(--clr-primary-100); padding-left: 0.25rem; }

.footer-bottom {
    background-color: rgba(0, 0, 0, 0.2); border-top: 1px solid rgba(255, 255, 255, 0.05);
    padding: 1.5rem 0; font-size: 0.875rem;
}

/* ==========================================================================
   12. Floating WhatsApp & Modal
   ========================================================================== */
.floating-wa {
    position: fixed; bottom: 30px; right: 30px;
    width: 60px; height: 60px; border-radius: 50%;
    background-color: #25D366; color: #fff;
    display: flex; align-items: center; justify-content: center;
    box-shadow: var(--shadow-lg); z-index: 999;
    transition: transform var(--transition-fast);
}
.floating-wa span { font-size: 32px; font-variation-settings: 'FILL' 1; }
.floating-wa:hover { transform: scale(1.1); color: #fff; }

.modal {
    position: fixed; inset: 0; background-color: rgba(15, 23, 42, 0.7);
    z-index: 2000; opacity: 0; pointer-events: none;
    display: flex; align-items: center; justify-content: center;
    padding: 1rem; transition: opacity var(--transition-normal);
    backdrop-filter: blur(5px); -webkit-backdrop-filter: blur(5px);
}
.modal.show { opacity: 1; pointer-events: auto; }
.modal-content {
    background-color: #fff; border-radius: var(--border-radius-lg);
    width: 100%; max-width: 600px; padding: 2.5rem;
    position: relative; transform: translateY(20px); transition: transform var(--transition-smooth);
    box-shadow: var(--shadow-lg); max-height: 90vh; overflow-y: auto;
}
.modal.show .modal-content { transform: translateY(0); }
.modal-icon {
    width: 80px; height: 80px; border-radius: 50%; display: flex; align-items: center; justify-content: center; margin-bottom: 1rem; overflow: hidden;
}
.modal-logo-img { width: 100%; height: 100%; object-fit: cover; }
.close-modal {
    position: absolute; top: 1.5rem; right: 1.5rem; background: var(--clr-neutral-100);
    border-radius: 50%; width: 36px; height: 36px;
    display: flex; align-items: center; justify-content: center;
    cursor: pointer; transition: background-color var(--transition-fast);
}
.close-modal:hover { background: var(--clr-neutral-200); }
.modal-program-list li { margin-bottom: 0.5rem; display: flex; align-items: center; gap: 0.5rem; font-size: 0.95rem; }
.check-icon { color: var(--clr-primary-600); font-size: 20px; font-variation-settings: 'FILL' 1; }

/* ==========================================================================
   13. Animations (Observer classes)
   ========================================================================== */
.init-hidden { opacity: 0; }
.fade-up-element { opacity: 0; transform: translateY(30px); transition: opacity 0.6s ease-out, transform 0.6s ease-out; }
.fade-up-element.in-view { opacity: 1; transform: translateY(0); }

.section-title.init-hidden, .section-desc.init-hidden, .contact-card.init-hidden, .struct-content.init-hidden, .info-card.init-hidden, .vm-item.init-hidden {
    opacity: 0; transform: translateY(20px); transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}
.in-view { opacity: 1 !important; transform: translateY(0) !important; }


/* ==========================================================================
   14. Responsive Media Queries
   ========================================================================== */
.bottom-nav { display: none; } /* Default sembunyikan di desktop */

@media (max-width: 992px) {
    .about-container, .struct-container, .contact-container { grid-template-columns: 1fr; gap: 3rem; }
    .footer-container { grid-template-columns: 1fr 1fr; }
    .about-image-wrapper { order: 2; margin-top: 2rem; }
    .about-content { order: 1; }
    .floating-card { bottom: 10px; right: 10px; padding: 1rem; }
}

@media (max-width: 768px) {
    :root { --section-padding-y: 3.5rem; }
    body { padding-bottom: 76px; } /* Ruang untuk bottom nav */
    
    /* Bottom Navigation Styles */
    .bottom-nav {
        display: flex; position: fixed; bottom: 0; left: 0; width: 100%;
        background-color: #ffffff; box-shadow: 0 -4px 15px rgba(0, 0, 0, 0.05);
        z-index: 1000; padding: 0.5rem 0; 
        padding-bottom: calc(0.5rem + env(safe-area-inset-bottom));
        justify-content: space-around; align-items: center; 
        border-top: 1px solid var(--clr-neutral-100);
    }
    .bottom-nav-item {
        display: flex; flex-direction: column; align-items: center; gap: 0.25rem;
        color: var(--clr-neutral-500); font-size: 0.75rem; font-weight: 500;
        transition: color var(--transition-fast);
    }
    .bottom-nav-item.active { color: var(--clr-primary-600); }
    .bottom-nav-item .material-symbols-outlined { font-size: 24px; transition: transform var(--transition-fast); }
    .bottom-nav-item.active .material-symbols-outlined { font-variation-settings: 'FILL' 1; transform: scale(1.1); }
    
    .hero { padding-top: 140px; padding-bottom: 80px; }
    .hero-title { font-size: 2.2rem; }
    .hero-stats { flex-direction: column; gap: 1rem; align-items: center; text-align: center; }
    .stat-card { align-items: center; }
    .desktop-only { display: none; }
    .menu-toggle { display: block; }
    
    .nav-menu {
        position: fixed; top: 76px; left: 0; width: 100%;
        background-color: #fff; padding: 2rem;
        box-shadow: 0 10px 15px -3px rgba(0,0,0,0.1);
        transform: translateY(-150%); transition: transform var(--transition-smooth);
        z-index: 990; border-top: 1px solid var(--clr-neutral-100);
    }
    .nav-menu.active { transform: translateY(0); }
    .nav-list { flex-direction: column; text-align: center; gap: 1.5rem; }
    
    .footer-container { grid-template-columns: 1fr; gap: 2.5rem; text-align: center; }
    .footer-desc { margin-inline: auto; }
    .social-links { justify-content: center; }
    .mobile-col { flex-direction: column; gap: 1rem; text-align: center; }
    .flex-between { flex-direction: column; gap: 1rem; align-items: center; text-align: center; }
    
    .floating-wa { bottom: 90px; }
}

@media (max-width: 480px) {
    .floating-card { display: none; } /* hide on very small device for cleanliness */
    .hero-buttons { flex-direction: column; width: 100%; }
    .btn { width: 100%; }
    .grid-cards, .grid-gallery { grid-template-columns: 1fr; }
    .contact-form { padding: 1.5rem; }
}

/* ==========================================================================
   15. Lightbox Galeri
   ========================================================================== */
.lightbox {
    display: none;
    position: fixed; inset: 0; z-index: 3000;
    background-color: rgba(0, 0, 0, 0.92);
    align-items: center; justify-content: center;
    padding: 1rem;
}
.lightbox.active { display: flex; animation: lbFadeIn 0.25s ease; }
@keyframes lbFadeIn { from { opacity: 0; } to { opacity: 1; } }

.lightbox-content {
    display: flex; flex-direction: column; align-items: center;
    max-width: 90vw; max-height: 90vh;
}
.lightbox-img {
    max-width: 100%; max-height: 78vh;
    object-fit: contain;
    border-radius: var(--border-radius-md);
    box-shadow: 0 25px 60px rgba(0,0,0,0.5);
    animation: lbZoomIn 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
}
@keyframes lbZoomIn {
    from { transform: scale(0.85); opacity: 0; }
    to   { transform: scale(1);    opacity: 1; }
}
.lightbox-caption {
    margin-top: 1rem;
    color: #e2e8f0;
    font-size: 1rem;
    text-align: center;
    font-family: var(--font-heading);
}
.lightbox-close {
    position: fixed; top: 1.25rem; right: 1.25rem;
    background: rgba(255,255,255,0.15);
    border: none; cursor: pointer; color: #fff;
    width: 44px; height: 44px; border-radius: 50%;
    display: flex; align-items: center; justify-content: center;
    transition: background-color var(--transition-fast); z-index: 10;
}
.lightbox-close:hover { background: rgba(255,255,255,0.3); }
.lightbox-nav {
    background: rgba(255,255,255,0.15);
    border: none; cursor: pointer; color: #fff;
    width: 52px; height: 52px; border-radius: 50%;
    display: flex; align-items: center; justify-content: center;
    transition: background-color var(--transition-fast), transform var(--transition-fast);
    flex-shrink: 0; margin: 0 1rem;
}
.lightbox-nav:hover { background: rgba(255,255,255,0.3); transform: scale(1.1); }
.lightbox-nav .material-symbols-outlined { font-size: 32px; }
@media (max-width: 480px) {
    .lightbox-nav { width: 38px; height: 38px; margin: 0 0.25rem; }
    .lightbox-nav .material-symbols-outlined { font-size: 22px; }
}

/* ==========================================================================
   16. Unit Detail Pages (PAUD, PKBM, MDTU)
   ========================================================================== */
.unit-hero {
    position: relative;
    padding-top: 140px;
    padding-bottom: 80px;
    background: linear-gradient(135deg, var(--clr-primary-50) 0%, #fff 100%);
    overflow: hidden;
}
.unit-hero-overlay {
    position: absolute; inset: 0;
    background: radial-gradient(circle at 90% 10%, color-mix(in srgb, var(--unit-color, #10b981) 8%, transparent) 0%, transparent 50%);
    z-index: 1;
}
.unit-hero-container { position: relative; z-index: 2; }
.unit-hero-content { max-width: 700px; }
.unit-hero-badge { display: flex; align-items: center; gap: 1rem; margin-bottom: 1.5rem; }
.unit-hero-logo { width: 56px; height: 56px; border-radius: 12px; object-fit: contain; box-shadow: var(--shadow-md); }
.unit-hero-title { font-size: clamp(2.2rem, 5vw, 3.5rem); line-height: 1.1; margin-bottom: 1rem; }
.unit-hero-desc { font-size: 1.1rem; color: var(--clr-neutral-500); margin-bottom: 1.5rem; max-width: 600px; }
.unit-hero-meta { display: flex; gap: 1.5rem; margin-bottom: 2rem; flex-wrap: wrap; }
.meta-item { display: flex; align-items: center; gap: 0.5rem; color: var(--clr-neutral-500); font-size: 0.95rem; font-weight: 500; }
.meta-item .material-symbols-outlined { font-size: 20px; color: var(--unit-color, var(--clr-primary-600)); }

.unit-detail-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 4rem; align-items: stretch; }
.unit-detail-grid.reverse .unit-detail-content { order: 1; }
.unit-detail-grid.reverse .unit-detail-image { order: 2; }
.unit-detail-content { display: flex; flex-direction: column; justify-content: center; }
.unit-detail-image { border-radius: var(--border-radius-lg); overflow: hidden; box-shadow: var(--shadow-lg); height: 100%; display: flex; }
.unit-img { width: 100%; height: 100%; min-height: 400px; object-fit: cover; transition: transform var(--transition-smooth); }
.unit-detail-image:hover .unit-img { transform: scale(1.03); }

.unit-info-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
.unit-info-item {
    display: flex; align-items: flex-start; gap: 0.75rem;
    padding: 0.75rem; background: var(--clr-neutral-50);
    border-radius: var(--border-radius-sm); border: 1px solid var(--clr-neutral-100);
}
.unit-info-item strong { font-size: 0.9rem; display: block; margin-bottom: 0.15rem; }
.unit-info-item p { font-size: 0.85rem; color: var(--clr-neutral-500); margin: 0; }

.program-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: 1.5rem; margin-top: 3rem; }
.program-grid.cols-2 { grid-template-columns: repeat(auto-fill, minmax(400px, 1fr)); }
.program-card {
    background: #fff; padding: 2rem; border-radius: var(--border-radius-lg);
    border: 1px solid var(--clr-neutral-100); box-shadow: var(--shadow-sm);
    transition: all var(--transition-normal);
    height: 100%;
    display: flex;
    flex-direction: column;
}
.program-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); border-color: var(--card-color, var(--clr-primary-100)); }
.program-icon {
    width: 48px; height: 48px; border-radius: var(--border-radius-sm);
    background: color-mix(in srgb, var(--card-color, #10b981) 12%, transparent);
    color: var(--card-color, #10b981);
    display: flex; align-items: center; justify-content: center;
    margin-bottom: 1rem;
}
.program-card h3 { font-size: 1.15rem; margin-bottom: 0.5rem; }
.program-card p { color: var(--clr-neutral-500); font-size: 0.9rem; line-height: 1.6; flex-grow: 1; }
.program-features { margin-top: auto; padding-top: 1.5rem; display: flex; flex-direction: column; gap: 0.5rem; }
.program-features li {
    display: flex; align-items: center; gap: 0.5rem;
    color: var(--clr-neutral-500); font-size: 0.85rem;
}
.program-features li .material-symbols-outlined { font-size: 18px; color: var(--card-color, #10b981); }

/* Lembaga Info Card */
.lembaga-info-card {
    background: var(--clr-neutral-50); border: 1px solid var(--clr-neutral-200);
    border-radius: var(--border-radius-md); overflow: hidden; margin-top: 1.5rem;
}
.lembaga-row {
    display: flex; justify-content: space-between; padding: 0.85rem 1.5rem;
    border-bottom: 1px solid var(--clr-neutral-200); font-size: 0.95rem;
}
.lembaga-row:last-child { border-bottom: none; }
.lembaga-row strong { color: var(--clr-secondary-900); min-width: 180px; }
.lembaga-row span { color: var(--clr-neutral-500); text-align: right; }

/* Contact Simple Grid */
.contact-simple-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: 1.5rem; margin-top: 2rem; }

/* ==========================================================================
   17. SPMB Form Styles
   ========================================================================== */
.spmb-header {
    padding-top: 120px; padding-bottom: 40px;
    background: linear-gradient(135deg, var(--clr-primary-50) 0%, #fff 100%);
    text-align: center;
}
.spmb-header-content .badge { margin-bottom: 1rem; }
.spmb-header-content h1 { font-size: 2rem; margin-bottom: 0.5rem; }
.spmb-header-content p { color: var(--clr-neutral-500); font-size: 1rem; }

.spmb-section { padding-top: 2rem; }

/* Progress Bar */
.spmb-progress { margin-bottom: 2rem; position: relative; }
.progress-track {
    height: 4px; background: var(--clr-neutral-200);
    border-radius: 4px; position: relative; margin-bottom: 1rem;
}
.progress-fill {
    height: 100%; background: var(--clr-primary-600);
    border-radius: 4px; transition: width 400ms ease;
    width: 0%;
}
.progress-steps { display: flex; justify-content: space-between; }
.progress-step {
    display: flex; flex-direction: column; align-items: center; gap: 0.5rem;
    cursor: default; transition: all var(--transition-fast);
}
.step-circle {
    width: 36px; height: 36px; border-radius: 50%;
    background: var(--clr-neutral-200); color: var(--clr-neutral-500);
    display: flex; align-items: center; justify-content: center;
    font-weight: 600; font-size: 0.9rem; transition: all var(--transition-normal);
}
.progress-step.active .step-circle { background: var(--clr-primary-600); color: #fff; }
.progress-step.completed .step-circle { background: var(--clr-primary-600); color: #fff; }
.step-label { font-size: 0.75rem; color: var(--clr-neutral-500); font-weight: 500; }
.progress-step.active .step-label { color: var(--clr-primary-700); font-weight: 600; }

/* Form Steps */
.form-step { display: none; }
.form-step.active { display: block; animation: fadeIn 0.3s ease; }
@keyframes fadeIn { from { opacity: 0; transform: translateY(10px); } to { opacity: 1; transform: translateY(0); } }

.step-header { text-align: center; margin-bottom: 2rem; }
.step-icon { font-size: 48px; color: var(--clr-primary-600); display: block; margin-bottom: 0.75rem; }
.step-header h2 { font-size: 1.5rem; margin-bottom: 0.5rem; }
.step-header p { color: var(--clr-neutral-500); }

/* Form Layout */
.spmb-form { max-width: 800px; margin: 0 auto; }
.form-row { margin-bottom: 0; }
.form-row.cols-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
.form-row.cols-3 { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 1rem; }
.form-row.cols-4 { display: grid; grid-template-columns: 1fr 1fr 1fr 1fr; gap: 1rem; }
.spmb-form .form-group { margin-bottom: 1.25rem; }
.spmb-form .form-group label { font-size: 0.9rem; }
.required { color: #ef4444; }
.form-section-title {
    display: flex; align-items: center; gap: 0.5rem;
    font-size: 1.1rem; color: var(--clr-primary-700);
    padding-bottom: 0.75rem; border-bottom: 2px solid var(--clr-primary-100);
    margin-bottom: 1.5rem;
}

/* Input Error */
.input-error { border-color: #ef4444 !important; box-shadow: 0 0 0 3px rgba(239,68,68,0.1) !important; }
.shake { animation: shake 0.5s ease; }
@keyframes shake { 0%,100% { transform: translateX(0); } 20%,60% { transform: translateX(-5px); } 40%,80% { transform: translateX(5px); } }

/* Unit Select Cards */
.unit-select-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 1rem; }
.unit-select-card { cursor: pointer; }
.unit-select-card input { display: none; }
.unit-select-content {
    position: relative; padding: 1.5rem; border: 2px solid var(--clr-neutral-200);
    border-radius: var(--border-radius-md); text-align: center;
    transition: all var(--transition-normal);
}
.unit-select-content:hover { border-color: var(--unit-color, var(--clr-primary-500)); }
.unit-select-card.selected .unit-select-content,
.unit-select-card input:checked + .unit-select-content {
    border-color: var(--unit-color, var(--clr-primary-600));
    background: color-mix(in srgb, var(--unit-color, var(--clr-primary-600)) 5%, transparent);
    box-shadow: 0 0 0 3px color-mix(in srgb, var(--unit-color, var(--clr-primary-600)) 15%, transparent);
}
.unit-select-logo { width: 48px; height: 48px; margin: 0 auto 0.75rem; border-radius: 8px; object-fit: contain; }
.unit-select-content h3 { font-size: 1rem; margin-bottom: 0.25rem; }
.unit-select-content p { font-size: 0.8rem; color: var(--clr-neutral-500); margin: 0; }
.unit-select-check {
    position: absolute; top: 0.75rem; right: 0.75rem;
    opacity: 0; color: var(--unit-color, var(--clr-primary-600));
    transition: opacity var(--transition-fast);
}
.unit-select-card.selected .unit-select-check,
.unit-select-card input:checked + .unit-select-content .unit-select-check { opacity: 1; }
.unit-select-card.disabled .unit-select-content { opacity: 0.5; pointer-events: none; }
.unit-closed-badge {
    display: block; margin-top: 0.75rem; padding: 0.25rem 0.5rem;
    background: rgba(239,68,68,0.1); color: #ef4444;
    border-radius: 4px; font-size: 0.75rem; font-weight: 600;
}

/* Upload Grid */
.upload-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(180px, 1fr)); gap: 1rem; }
.upload-card { text-align: center; }
.upload-area {
    position: relative; border: 2px dashed var(--clr-neutral-200);
    border-radius: var(--border-radius-md); cursor: pointer;
    overflow: hidden; transition: all var(--transition-fast);
    min-height: 160px; display: flex; align-items: center; justify-content: center;
}
.upload-area:hover, .upload-area.dragover { border-color: var(--clr-primary-500); background: var(--clr-primary-50); }
.upload-area.has-file { border-color: var(--clr-primary-500); border-style: solid; }
.upload-input { position: absolute; inset: 0; opacity: 0; cursor: pointer; z-index: -1; }
.upload-placeholder {
    display: flex; flex-direction: column; align-items: center; gap: 0.5rem;
    padding: 1.5rem; color: var(--clr-neutral-500);
}
.upload-placeholder .material-symbols-outlined { font-size: 36px; }
.upload-placeholder h4 { font-size: 0.85rem; margin: 0; }
.upload-placeholder p { font-size: 0.75rem; margin: 0; }
.upload-preview {
    width: 100%; height: 160px; display: flex; align-items: center; justify-content: center;
    position: relative;
}
.upload-preview img { max-width: 100%; max-height: 100%; object-fit: contain; padding: 0.5rem; }
.upload-remove {
    position: absolute; top: 0.5rem; right: 0.5rem;
    width: 28px; height: 28px; border-radius: 50%;
    background: rgba(239,68,68,0.9); color: #fff;
    display: flex; align-items: center; justify-content: center;
    cursor: pointer; z-index: 10;
}
.upload-remove .material-symbols-outlined { font-size: 16px; }
.upload-label { display: block; font-size: 0.8rem; color: var(--clr-neutral-500); margin-top: 0.5rem; font-weight: 500; }
.upload-badge {
    display: inline-block; padding: 0.1rem 0.4rem;
    background: rgba(239,68,68,0.1); color: #ef4444;
    border-radius: 4px; font-size: 0.7rem; font-weight: 600;
}
.upload-badge.secondary {
    background: var(--clr-neutral-100); color: var(--clr-neutral-500);
}

/* Form Navigation */
.form-nav {
    display: flex; align-items: center; gap: 1rem;
    margin-top: 2rem; padding-top: 2rem;
    border-top: 1px solid var(--clr-neutral-200);
}

/* Review */
.review-container { display: flex; flex-direction: column; gap: 1.5rem; }
.review-section { background: var(--clr-neutral-50); padding: 1.5rem; border-radius: var(--border-radius-md); border: 1px solid var(--clr-neutral-200); }
.review-section h3 {
    display: flex; align-items: center; gap: 0.5rem;
    font-size: 1rem; color: var(--clr-primary-700); margin-bottom: 1rem;
    padding-bottom: 0.75rem; border-bottom: 1px solid var(--clr-neutral-200);
}
.review-section h3 .material-symbols-outlined { font-size: 20px; }
.review-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 0.75rem; }
.review-item { display: flex; flex-direction: column; gap: 0.15rem; }
.review-item.full { grid-column: 1 / -1; }
.review-label { font-size: 0.8rem; color: var(--clr-neutral-500); font-weight: 500; }
.review-value { font-size: 0.9rem; font-weight: 600; color: var(--clr-secondary-900); }
.review-value.uploaded { color: var(--clr-primary-600); }
.review-value.not-uploaded { color: var(--clr-neutral-500); }

/* Checkbox */
.checkbox-label { display: flex; align-items: flex-start; gap: 0.75rem; cursor: pointer; font-size: 0.9rem; color: var(--clr-neutral-500); }
.checkbox-label input[type="checkbox"] { width: 20px; height: 20px; flex-shrink: 0; margin-top: 2px; accent-color: var(--clr-primary-600); }

/* Success */
.spmb-success { text-align: center; max-width: 550px; margin: 0 auto; padding: 2rem; }
.success-icon .material-symbols-outlined { font-size: 80px; color: var(--clr-primary-600); animation: successPop 0.5s cubic-bezier(0.34, 1.56, 0.64, 1); }
@keyframes successPop { from { transform: scale(0); } to { transform: scale(1); } }
.spmb-success h2 { font-size: 1.75rem; margin-top: 1rem; }
.success-info {
    background: var(--clr-neutral-50); border: 1px solid var(--clr-neutral-200);
    border-radius: var(--border-radius-md); padding: 1.5rem; margin-top: 1.5rem;
}
.success-row {
    display: flex; justify-content: space-between; padding: 0.5rem 0;
    border-bottom: 1px solid var(--clr-neutral-200); font-size: 0.95rem;
}
.success-row:last-child { border-bottom: none; }
.success-row span { color: var(--clr-neutral-500); }

/* ==========================================================================
   18. Popup Overlay
   ========================================================================== */
.popup-overlay {
    position: fixed; inset: 0;
    background: rgba(15, 23, 42, 0.75);
    backdrop-filter: blur(6px); -webkit-backdrop-filter: blur(6px);
    z-index: 5000;
    display: flex; align-items: center; justify-content: center;
    padding: 1rem;
    opacity: 0; pointer-events: none;
    transition: opacity 300ms ease;
}
.popup-overlay.show { opacity: 1; pointer-events: auto; }
.popup-box {
    position: relative;
    max-width: 500px; width: 100%;
    border-radius: var(--border-radius-lg);
    overflow: hidden;
    box-shadow: 0 25px 60px rgba(0,0,0,0.4);
    transform: scale(0.9); transition: transform 400ms cubic-bezier(0.34, 1.56, 0.64, 1);
}
.popup-overlay.show .popup-box { transform: scale(1); }
.popup-close {
    position: absolute; top: 0.75rem; right: 0.75rem;
    width: 36px; height: 36px; border-radius: 50%;
    background: rgba(0,0,0,0.5); color: #fff;
    display: flex; align-items: center; justify-content: center;
    cursor: pointer; z-index: 10;
    transition: background var(--transition-fast);
}
.popup-close:hover { background: rgba(0,0,0,0.7); }
.popup-img { width: 100%; display: block; cursor: pointer; }

/* ==========================================================================
   19. Toast Notification
   ========================================================================== */
.toast {
    position: fixed; bottom: 2rem; right: 2rem;
    padding: 0.85rem 1.5rem;
    border-radius: var(--border-radius-md);
    display: flex; align-items: center; gap: 0.5rem;
    font-size: 0.9rem; font-weight: 500; z-index: 9999;
    transform: translateY(100px); opacity: 0;
    transition: all 300ms ease;
    box-shadow: var(--shadow-lg);
}
.toast.show { transform: translateY(0); opacity: 1; }
.toast-success { background: #065f46; color: #d1fae5; }
.toast-error { background: #991b1b; color: #fecaca; }
.toast-info { background: var(--clr-secondary-800); color: var(--clr-neutral-200); }

/* Spinner */
@keyframes spin { to { transform: rotate(360deg); } }
.spin { animation: spin 1s linear infinite; }

/* ==========================================================================
   20. Responsive Additions for New Pages
   ========================================================================== */
@media (max-width: 992px) {
    .unit-detail-grid { grid-template-columns: 1fr; gap: 2rem; }
    .unit-detail-grid.reverse .unit-detail-content { order: 1; }
    .unit-detail-grid.reverse .unit-detail-image { order: 1; }
    .unit-info-grid { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
    .unit-hero { padding-top: 120px; padding-bottom: 60px; }
    .program-grid, .program-grid.cols-2 { grid-template-columns: 1fr; }
    .unit-select-grid { grid-template-columns: 1fr; }
    .upload-grid { grid-template-columns: 1fr; gap: 1rem; }
    .form-row.cols-2, .form-row.cols-3, .form-row.cols-4 { grid-template-columns: 1fr; gap: 1rem; }
    .step-label { display: none; }
    .step-circle { width: 32px; height: 32px; font-size: 0.85rem; }
    .progress-track { top: 14px; }
    .spmb-progress { margin-bottom: 1.5rem; }
    .review-grid { grid-template-columns: 1fr; }
    .contact-simple-grid { grid-template-columns: 1fr; }
    .lembaga-row { flex-direction: column; gap: 0.25rem; }
    .lembaga-row span { text-align: left; }
    .toast { left: 1rem; right: 1rem; bottom: 5rem; }
}

@media (max-width: 480px) {
    .upload-grid { grid-template-columns: 1fr; }
    .progress-steps { gap: 0; }
    .step-circle { width: 30px; height: 30px; font-size: 0.8rem; }
}