/* ========== CSS RESET & GLOBAL STYLES ========== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* Light Mode Colors */
    --primary-color: #2c5f2d;
    --secondary-color: #97bc62;
    --accent-color: #ce4b27;
    --text-color: #333333;
    --bg-color: #f8f8f8;
    --card-bg: #ffffff;
    --header-bg: #ffffff;
    --footer-bg: #2c3e50;
    --footer-text: #ecf0f1;
    --border-color: #e0e0e0;
    --shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
    --transition: all 0.3s ease;
}

.dark-mode {
    /* Dark Mode Colors */
    --primary-color: #4caf50;
    --secondary-color: #81c784;
    --accent-color: #ff9800;
    --text-color: #e0e0e0;
    --bg-color: #121212;
    --card-bg: #1e1e1e;
    --header-bg: #1a1a1a;
    --footer-bg: #0d1117;
    --footer-text: #b0b0b0;
    --border-color: #333333;
    --shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
}

body {
    font-family: 'Noto Sans Devanagari', 'Hind Siliguri', sans-serif;
    color: var(--text-color);
    background-color: var(--bg-color);
    line-height: 1.6;
    transition: var(--transition);
    padding-bottom: 20px;
}

.container {
    width: 80%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 15px;
}

/* ========== HEADER & NAVIGATION ========== */
header {
    background-color: var(--header-bg);
    box-shadow: var(--shadow);
    position: sticky;
    top: 0;
    z-index: 1000;
    padding: 15px 0;
    transition: var(--transition);
}

.header-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
}

.logo h1 {
    font-size: 1.8rem;
    color: var(--primary-color);
}

.logo-icon {
    font-size: 2rem;
}

.controls {
    display: flex;
    gap: 15px;
    align-items: center;
}

.toggle-btn {
    background-color: var(--primary-color);
    color: white;
    border: none;
    padding: 8px 16px;
    border-radius: 4px;
    cursor: pointer;
    font-family: inherit;
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 5px;
    transition: var(--transition);
}

.toggle-btn:hover {
    background-color: var(--accent-color);
}

.search-container {
    position: relative;
    width: 300px;
}

#searchInput {
    width: 100%;
    padding: 10px 15px;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    background-color: var(--card-bg);
    color: var(--text-color);
    font-family: inherit;
    transition: var(--transition);
}

#searchInput:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 2px rgba(44, 95, 45, 0.2);
}

.search-results {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background-color: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 0 0 4px 4px;
    max-height: 300px;
    overflow-y: auto;
    display: none;
    z-index: 100;
    box-shadow: var(--shadow);
}

.search-result-item {
    padding: 10px 15px;
    border-bottom: 1px solid var(--border-color);
    cursor: pointer;
    transition: var(--transition);
}

.search-result-item:hover {
    background-color: var(--secondary-color);
    color: #000;
}

/* ========== NAVIGATION BUTTONS ========== */
.nav-buttons {
    display: flex;
    gap: 10px;
    margin-bottom: 20px;
}

.nav-btn {
    background-color: var(--secondary-color);
    color: #000;
    border: none;
    padding: 10px 20px;
    border-radius: 4px;
    cursor: pointer;
    font-family: inherit;
    font-weight: 500;
    display: inline-flex;
    align-items: center;
    gap: 5px;
    transition: var(--transition);
    text-decoration: none;
}

.nav-btn:hover {
    background-color: var(--primary-color);
    color: white;
    transform: translateY(-2px);
}

.nav-btn i {
    font-size: 1.1rem;
}

/* Breadcrumb navigation */
.breadcrumb {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 20px;
    padding: 10px 15px;
    background-color: var(--card-bg);
    border-radius: 8px;
    box-shadow: var(--shadow);
}

.breadcrumb-item {
    display: flex;
    align-items: center;
    gap: 5px;
    color: var(--text-color);
    text-decoration: none;
    transition: var(--transition);
}

.breadcrumb-item:hover {
    color: var(--primary-color);
}

.breadcrumb-separator {
    color: var(--secondary-color);
}

.breadcrumb-current {
    color: var(--accent-color);
    font-weight: bold;
}

/* Active states for navigation */
.nav-btn.active {
    background-color: var(--primary-color);
    color: white;
}

/* History navigation */
.history-nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
    padding-bottom: 15px;
    border-bottom: 2px solid var(--border-color);
}

.history-nav h2 {
    color: var(--primary-color);
    margin: 0;
}

.history-buttons {
    display: flex;
    gap: 10px;
}

/* ========== ADVERTISEMENT SECTIONS ========== */
.advertisement {
    background-color: #f5f5f5;
    border: 2px dashed #ccc;
    height: 100px;
    display: flex;
    justify-content: center;
    align-items: center;
    margin: 20px 0;
    color: #666;
    font-weight: bold;
    text-align: center;
    border-radius: 4px;
}

.dark-mode .advertisement {
    background-color: #2a2a2a;
    border-color: #555;
    color: #aaa;
}

/* ========== MAIN CONTENT ========== */
.hero {
    text-align: center;
    padding: 40px 0;
    background: linear-gradient(to right, var(--primary-color), var(--secondary-color));
    color: white;
    border-radius: 8px;
    margin: 20px 0;
}

.hero h1 {
    font-size: 2.5rem;
    margin-bottom: 10px;
}

.hero p {
    font-size: 1.2rem;
    max-width: 800px;
    margin: 0 auto;
}

.categories {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: 20px;
    margin: 30px 0;
}

.category-card {
    background-color: var(--card-bg);
    border-radius: 8px;
    padding: 20px;
    box-shadow: var(--shadow);
    transition: var(--transition);
    cursor: pointer;
    border: 1px solid var(--border-color);
}

.category-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0,0,0,0.1);
}

.dark-mode .category-card:hover {
    box-shadow: 0 10px 20px rgba(0,0,0,0.4);
}

.category-icon {
    font-size: 2.5rem;
    margin-bottom: 15px;
    color: var(--primary-color);
}

.category-card h3 {
    color: var(--primary-color);
    margin-bottom: 10px;
    font-size: 1.3rem;
}

.tirth-list {
    display: none;
    margin-top: 30px;
}

.tirth-list.active {
    display: block;
}

.tirth-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 20px;
    margin-top: 20px;
}

.tirth-card {
    background-color: var(--card-bg);
    border-radius: 8px;
    padding: 20px;
    box-shadow: var(--shadow);
    border: 1px solid var(--border-color);
}

.tirth-card h4 {
    color: var(--accent-color);
    margin-bottom: 10px;
    font-size: 1.2rem;
}

.tirth-detail {
    margin-bottom: 8px;
    display: flex;
}

.tirth-detail-label {
    font-weight: bold;
    min-width: 120px;
    color: var(--primary-color);
}

/* ========== SEO ARTICLE SECTION ========== */
.seo-article {
    background-color: var(--card-bg);
    border-radius: 8px;
    padding: 30px;
    margin: 40px 0;
    box-shadow: var(--shadow);
    border: 1px solid var(--border-color);
}

.seo-article h2 {
    color: var(--primary-color);
    margin-bottom: 20px;
    border-bottom: 2px solid var(--secondary-color);
    padding-bottom: 10px;
}

.seo-article h3 {
    color: var(--accent-color);
    margin: 20px 0 10px;
}

.seo-article p {
    margin-bottom: 15px;
    text-align: justify;
}

/* ========== FOOTER ========== */
footer {
    background-color: var(--footer-bg);
    color: var(--footer-text);
    padding: 40px 0 20px;
    margin-top: 40px;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 30px;
    margin-bottom: 30px;
}

.footer-section h3 {
    color: white;
    margin-bottom: 15px;
    font-size: 1.2rem;
}

.footer-section ul {
    list-style: none;
}

.footer-section ul li {
    margin-bottom: 8px;
}

.footer-section a {
    color: var(--footer-text);
    text-decoration: none;
    transition: var(--transition);
}

.footer-section a:hover {
    color: var(--secondary-color);
}

.copyright {
    text-align: center;
    padding-top: 20px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    font-size: 0.9rem;
}

/* ========== RESPONSIVE DESIGN ========== */
@media (max-width: 992px) {
    .container {
        width: 90%;
    }
    
    .hero h1 {
        font-size: 2rem;
    }
}

@media (max-width: 768px) {
    .container {
        width: 95%;
    }
    
    .header-container {
        flex-direction: column;
        gap: 15px;
    }
    
    .search-container {
        width: 100%;
        max-width: 500px;
    }
    
    .hero h1 {
        font-size: 1.8rem;
    }
    
    .hero p {
        font-size: 1rem;
    }
    
    .categories {
        grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    }
    
    .tirth-grid {
        grid-template-columns: 1fr;
    }
    
    .controls {
        width: 100%;
        justify-content: center;
    }
}

@media (max-width: 480px) {
    .categories {
        grid-template-columns: 1fr;
    }
    
    .hero {
        padding: 25px 15px;
    }
    
    .hero h1 {
        font-size: 1.5rem;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
    }
}

/* ========== UTILITY CLASSES ========== */
.back-btn {
    background-color: var(--secondary-color);
    color: #000;
    border: none;
    padding: 10px 20px;
    border-radius: 4px;
    cursor: pointer;
    font-family: inherit;
    font-weight: 500;
    margin-bottom: 20px;
    display: inline-flex;
    align-items: center;
    gap: 5px;
    transition: var(--transition);
}

.back-btn:hover {
    background-color: var(--primary-color);
    color: white;
}

.hidden {
    display: none;
}

.active-category {
    color: var(--accent-color);
    font-weight: bold;
}