/* ==========================================================================
   Natunkicho Learning Ecosystem - Core Styles
   ========================================================================== */

/* --- 1. Variables & Scoping --- */
#nk-learning-ecosystem {
    --nk-primary: #0056b3;        /* Premium Trust Blue */
    --nk-secondary: #f0f4f8;      /* Soft background */
    --nk-accent: #ff9900;         /* Action/Warning Orange */
    --nk-text-dark: #1a1a1a;
    --nk-text-light: #555555;
    --nk-border: #e0e0e0;
    --nk-white: #ffffff;
    --nk-radius: 8px;
    --nk-shadow: 0 4px 12px rgba(0,0,0,0.05);
    --nk-shadow-hover: 0 10px 20px rgba(0,0,0,0.1);
    
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    color: var(--nk-text-dark);
    line-height: 1.6;
    background-color: var(--nk-white);
}

/* Base Utility Classes */
#nk-learning-ecosystem .nk-learning-section {
    padding: 80px 0;
}
#nk-learning-ecosystem .bg-light-gray {
    background-color: var(--nk-secondary);
}
#nk-learning-ecosystem .nk-learning-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* --- 2. Typography & Buttons --- */
#nk-learning-ecosystem h1, h2, h3, h4 {
    margin-top: 0;
    font-weight: 700;
}
#nk-learning-ecosystem .nk-section-title {
    font-size: 2rem;
    margin-bottom: 10px;
}
#nk-learning-ecosystem .nk-section-header {
    margin-bottom: 40px;
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
}
#nk-learning-ecosystem .nk-btn {
    display: inline-block;
    padding: 12px 24px;
    border-radius: var(--nk-radius);
    font-weight: 600;
    text-decoration: none;
    transition: all 0.3s ease;
    cursor: pointer;
    border: none;
}
#nk-learning-ecosystem .nk-btn-primary { background: var(--nk-primary); color: var(--nk-white); }
#nk-learning-ecosystem .nk-btn-primary:hover { background: #004494; }
#nk-learning-ecosystem .nk-btn-secondary { background: var(--nk-white); color: var(--nk-primary); border: 2px solid var(--nk-primary); }
#nk-learning-ecosystem .nk-btn-primary-sm { padding: 8px 16px; font-size: 14px; background: var(--nk-primary); color: var(--nk-white); }

/* --- REPLACE SECTION 3: The New Premium Pill Navigation --- */
#nk-learning-ecosystem .nk-margin-top-gap {
    margin-top: 30px; /* Adjust this to create the perfect gap below your main header */
}
#nk-learning-ecosystem .nk-learning-nav-wrapper {
    background: var(--nk-white);
    border-bottom: 1px solid var(--nk-border);
    padding: 15px 0;
}
#nk-learning-ecosystem .nk-learning-nav-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}
#nk-learning-ecosystem .nk-premium-menu-scroll {
    overflow-x: auto;
    scrollbar-width: none; /* Firefox */
}
#nk-learning-ecosystem .nk-premium-menu-scroll::-webkit-scrollbar { display: none; } /* Chrome */
#nk-learning-ecosystem .nk-learning-menu-pills {
    display: flex;
    list-style: none;
    margin: 0;
    padding: 0;
    gap: 10px;
}
#nk-learning-ecosystem .nk-learning-menu-pills a {
    text-decoration: none;
    color: var(--nk-text-light);
    font-weight: 600;
    font-size: 14px;
    padding: 10px 20px;
    border-radius: 30px;
    background: var(--nk-secondary);
    transition: all 0.3s ease;
    white-space: nowrap;
}
#nk-learning-ecosystem .nk-learning-menu-pills a:hover {
    background: #e2e8f0;
    color: var(--nk-text-dark);
}
#nk-learning-ecosystem .nk-learning-menu-pills a.active {
    background: var(--nk-text-dark);
    color: var(--nk-white);
    box-shadow: 0 4px 10px rgba(0,0,0,0.1);
}
#nk-learning-ecosystem .nk-btn-dark-sm {
    background: var(--nk-text-dark);
    color: var(--nk-white);
    padding: 10px 20px;
    border-radius: 30px;
    font-size: 14px;
}
#nk-learning-ecosystem .nk-btn-text {
    background: transparent;
    color: var(--nk-text-dark);
    font-weight: 600;
    margin-right: 15px;
    text-decoration: none;
}


/* --- ADD TO BOTTOM: Premium Testimonials --- */
#nk-learning-ecosystem .nk-testimonial-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 30px;
}
#nk-learning-ecosystem .nk-testimonial-card {
    background: var(--nk-white);
    padding: 30px;
    border-radius: var(--nk-radius);
    box-shadow: var(--nk-shadow);
    border: 1px solid var(--nk-border);
}
#nk-learning-ecosystem .nk-testi-stars {
    color: #ffc107; /* Gold stars */
    margin-bottom: 15px;
}
#nk-learning-ecosystem .nk-testi-quote {
    font-size: 1.1rem;
    font-style: italic;
    color: var(--nk-text-dark);
    margin-bottom: 25px;
    line-height: 1.7;
}
#nk-learning-ecosystem .nk-testi-author {
    display: flex;
    align-items: center;
    gap: 15px;
    border-top: 1px solid var(--nk-border);
    padding-top: 20px;
}
#nk-learning-ecosystem .nk-testi-avatar {
    width: 45px;
    height: 45px;
    border-radius: 50%;
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
    font-size: 1.1rem;
}
#nk-learning-ecosystem .nk-testi-info h4 { margin: 0 0 2px 0; font-size: 1rem; }
#nk-learning-ecosystem .nk-testi-info span { font-size: 0.85rem; color: var(--nk-text-light); }

/* --- 4. Hero Section --- */
#nk-learning-ecosystem .nk-hero-section {
    padding: 100px 0;
    background: linear-gradient(135deg, var(--nk-secondary) 0%, #ffffff 100%);
}
#nk-learning-ecosystem .nk-hero-title {
    font-size: 3.5rem;
    line-height: 1.2;
    margin-bottom: 20px;
}
#nk-learning-ecosystem .nk-hero-title .highlight { color: var(--nk-primary); }
#nk-learning-ecosystem .nk-hero-search-wrapper { margin-top: 40px; max-width: 700px; }
#nk-learning-ecosystem .nk-learning-search-form { display: flex; gap: 10px; }
#nk-learning-ecosystem .nk-search-input-group {
    flex: 1;
    display: flex;
    align-items: center;
    background: var(--nk-white);
    border: 1px solid var(--nk-border);
    border-radius: var(--nk-radius);
    padding: 5px 15px;
}
#nk-learning-ecosystem .nk-search-input-group input {
    border: none;
    width: 100%;
    padding: 12px;
    outline: none;
    font-size: 16px;
}

/* --- 5. Grid Layouts (Courses, Tutors, Roadmaps) --- */
/* Auto-responsive Grid System */
#nk-learning-ecosystem .nk-course-grid,
#nk-learning-ecosystem .nk-tutor-grid,
#nk-learning-ecosystem .nk-roadmap-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 30px;
}

/* Universal Card Styling */
#nk-learning-ecosystem .nk-course-card,
#nk-learning-ecosystem .nk-tutor-card,
#nk-learning-ecosystem .nk-roadmap-card {
    background: var(--nk-white);
    border: 1px solid var(--nk-border);
    border-radius: var(--nk-radius);
    overflow: hidden;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    display: flex;
    flex-direction: column;
}
#nk-learning-ecosystem .nk-course-card:hover,
#nk-learning-ecosystem .nk-tutor-card:hover,
#nk-learning-ecosystem .nk-roadmap-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--nk-shadow-hover);
}

/* Course Card Specifics */
#nk-learning-ecosystem .nk-course-thumbnail {
    height: 180px;
    background: #ddd; /* Placeholder */
    position: relative;
}
#nk-learning-ecosystem .nk-badge {
    position: absolute;
    top: 10px;
    left: 10px;
    background: var(--nk-accent);
    color: var(--nk-white);
    padding: 4px 8px;
    font-size: 12px;
    font-weight: bold;
    border-radius: 4px;
}
#nk-learning-ecosystem .nk-course-content {
    padding: 20px;
    display: flex;
    flex-direction: column;
    flex: 1;
}
#nk-learning-ecosystem .nk-course-title {
    font-size: 1.1rem;
    margin: 10px 0;
}
#nk-learning-ecosystem .nk-course-title a { color: var(--nk-text-dark); text-decoration: none; }
#nk-learning-ecosystem .nk-course-meta {
    display: flex;
    gap: 15px;
    font-size: 13px;
    color: var(--nk-text-light);
    margin-bottom: 20px;
}
#nk-learning-ecosystem .nk-course-footer {
    margin-top: auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-top: 1px solid var(--nk-border);
    padding-top: 15px;
}
#nk-learning-ecosystem .price-current { font-size: 1.2rem; font-weight: bold; }

/* --- 6. Mobile Responsiveness --- */
@media (max-width: 768px) {
    #nk-learning-ecosystem .nk-hero-title { font-size: 2.5rem; }
    #nk-learning-ecosystem .nk-section-header { flex-direction: column; align-items: flex-start; gap: 10px; }
    #nk-learning-ecosystem .nk-learning-search-form { flex-direction: column; }
    #nk-learning-ecosystem .nk-course-filters { display: flex; flex-wrap: wrap; gap: 10px; }
}

/* --- 7. Single Course Detail Page --- */
#nk-learning-ecosystem.nk-single-course-wrapper {
    padding-bottom: 80px;
}
#nk-learning-ecosystem .nk-single-hero {
    padding: 60px 0;
    border-bottom: 1px solid var(--nk-border);
    margin-bottom: 40px;
}
#nk-learning-ecosystem .nk-single-title {
    font-size: 2.5rem;
    margin: 10px 0 20px 0;
}
#nk-learning-ecosystem .nk-single-layout {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 40px;
}
#nk-learning-ecosystem .nk-single-content {
    font-size: 1.1rem;
    line-height: 1.8;
}
/* Premium Sticky Sidebar */
#nk-learning-ecosystem .nk-single-sidebar {
    position: sticky;
    top: 100px; /* Adjust based on your main header height */
    align-self: start;
}
#nk-learning-ecosystem .nk-action-card {
    background: var(--nk-white);
    border: 1px solid var(--nk-border);
    border-radius: var(--nk-radius);
    box-shadow: var(--nk-shadow-hover);
    overflow: hidden;
}
#nk-learning-ecosystem .nk-action-image img {
    width: 100%;
    height: auto;
    display: block;
}
#nk-learning-ecosystem .nk-action-details {
    padding: 25px;
}
#nk-learning-ecosystem .nk-course-pricing {
    margin-bottom: 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}
#nk-learning-ecosystem .price-label {
    font-size: 1.1rem;
    color: var(--nk-text-light);
}
#nk-learning-ecosystem .nk-course-pricing .price-current {
    font-size: 1.8rem;
    color: var(--nk-primary);
}
#nk-learning-ecosystem .nk-full-width {
    width: 100%;
    text-align: center;
    box-sizing: border-box;
}
#nk-learning-ecosystem .nk-course-perks {
    list-style: none;
    padding: 0;
    margin: 20px 0 0 0;
}
#nk-learning-ecosystem .nk-course-perks li {
    margin-bottom: 10px;
    font-size: 0.95rem;
    color: var(--nk-text-light);
    display: flex;
    align-items: center;
    gap: 10px;
}
#nk-learning-ecosystem .nk-course-perks i { color: #28a745; }

/* Mobile view for single page */
@media (max-width: 900px) {
    #nk-learning-ecosystem .nk-single-layout { grid-template-columns: 1fr; }
    #nk-learning-ecosystem .nk-single-sidebar { order: -1; position: static; }
}