/* ================ Variables ================ */
:root {
    /* Light Theme */
    --light-bg: #ffffff;
    --light-text: #333333;
    --light-primary: #4e73df;
    --light-secondary: #f8f9fa;
    --light-border: #eaeaea;
    --light-accent: #f1f1f1;
    --light-card: #ffffff;
    
    /* Dark Theme */
    --dark-bg: #1a1a1a;
    --dark-text: #f1f1f1;
    --dark-primary: #5a8cff;
    --dark-secondary: #2d2d2d;
    --dark-border: #444444;
    --dark-accent: #333333;
    --dark-card: #252525;
    
    /* Shared */
    --shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    --radius: 8px;
    --transition: all 0.3s ease;
    --max-width: 1200px;
    --header-height: 80px;
}

/* ================ Base Styles ================ */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Poppins', sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background-color: var(--bg-color);
    transition: var(--transition);
}

body.light {
    --bg-color: var(--light-bg);
    --text-color: var(--light-text);
    --primary-color: var(--light-primary);
    --secondary-color: var(--light-secondary);
    --border-color: var(--light-border);
    --accent-color: var(--light-accent);
    --card-color: var(--light-card);
}

body.dark {
    --bg-color: var(--dark-bg);
    --text-color: var(--dark-text);
    --primary-color: var(--dark-primary);
    --secondary-color: var(--dark-secondary);
    --border-color: var(--dark-border);
    --accent-color: var(--dark-accent);
    --card-color: var(--dark-card);
}

h1, h2, h3, h4, h5, h6 {
    font-family: 'Playfair Display', serif;
    font-weight: 600;
    line-height: 1.2;
    margin-bottom: 1rem;
    color: var(--text-color);
}

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

a:hover {
    color: var(--text-color);
    text-decoration: underline;
}

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

.container {
    width: 100%;
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 20px;
}

/* ================ Header Styles ================ */
.site-header {
    background-color: var(--card-color);
    box-shadow: var(--shadow);
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    height: var(--header-height);
    transition: var(--transition);
}

.header-wrapper {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: var(--header-height);
    position: relative;
}

.logo-wrapper {
    display: flex;
    align-items: center;
}

.logo {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--text-color);
    display: flex;
    align-items: center;
    gap: 10px;
}

.logo:hover {
    text-decoration: none;
}

.logo-image {
    height: 40px;
    width: auto;
}

.main-navigation ul {
    display: flex;
    list-style: none;
    gap: 25px;
}

.main-navigation a {
    color: var(--text-color);
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 8px;
}

.main-navigation a:hover {
    text-decoration: none;
    color: var(--primary-color);
}

.main-navigation li.active a {
    color: var(--primary-color);
    font-weight: 600;
}

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

.search-toggle, 
.theme-toggle, 
.mobile-menu-toggle {
    background: none;
    border: none;
    color: var(--text-color);
    font-size: 1.2rem;
    cursor: pointer;
    padding: 5px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
}

.theme-toggle {
    position: relative;
    width: 40px;
    height: 40px;
}

.theme-toggle i {
    position: absolute;
    transition: var(--transition);
}

.theme-toggle .fa-sun {
    opacity: 0;
}

body.light .theme-toggle .fa-sun {
    opacity: 1;
}

body.light .theme-toggle .fa-moon {
    opacity: 0;
}

.search-bar {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--card-color);
    padding: 15px 0;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1);
    transform: translateY(-100%);
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
    z-index: 999;
}

.search-bar.active {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
}

.search-bar form {
    display: flex;
    max-width: 600px;
    margin: 0 auto;
    width: 100%;
}

.search-bar input {
    flex: 1;
    padding: 12px 20px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius) 0 0 var(--radius);
    font-size: 1rem;
    background: var(--bg-color);
    color: var(--text-color);
}

.search-bar button {
    padding: 0 20px;
    background: var(--primary-color);
    color: white;
    border: none;
    border-radius: 0 var(--radius) var(--radius) 0;
    cursor: pointer;
    transition: var(--transition);
}

.search-bar button:hover {
    background: var(--text-color);
}

.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    justify-content: space-between;
    width: 30px;
    height: 24px;
    z-index: 1001;
}

.mobile-menu-toggle span {
    display: block;
    width: 100%;
    height: 3px;
    background: var(--text-color);
    border-radius: 3px;
    transition: var(--transition);
}

.mobile-menu-toggle.active span:nth-child(1) {
    transform: translateY(10px) rotate(45deg);
}

.mobile-menu-toggle.active span:nth-child(2) {
    opacity: 0;
}

.mobile-menu-toggle.active span:nth-child(3) {
    transform: translateY(-10px) rotate(-45deg);
}

.mobile-navigation {
    position: fixed;
    top: var(--header-height);
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--card-color);
    z-index: 999;
    transform: translateX(-100%);
    transition: var(--transition);
    overflow-y: auto;
    padding: 20px;
}

.mobile-navigation.active {
    transform: translateX(0);
}

.mobile-navigation ul {
    list-style: none;
}

.mobile-navigation li {
    margin-bottom: 15px;
}

.mobile-navigation a {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.1rem;
    padding: 10px;
    border-radius: var(--radius);
    transition: var(--transition);
}

.mobile-navigation a:hover {
    background: var(--accent-color);
    text-decoration: none;
}

.mobile-navigation li.active a {
    color: var(--primary-color);
    font-weight: 600;
}

/* Header Ad */
.header-ad {
    padding: 15px 0;
    background: var(--secondary-color);
    margin-top: var(--header-height);
}

.ad-wrapper {
    max-width: 100%;
    margin: 0 auto;
    text-align: center;
}

/* ================ Main Content ================ */
.main-content {
    margin-top: calc(var(--header-height) + 20px);
    padding: 20px 0 40px;
    min-height: calc(100vh - var(--header-height) - 150px);
}

/* ================ Footer Styles ================ */
.site-footer {
    background: var(--secondary-color);
    color: var(--text-color);
    padding: 50px 0 20px;
    border-top: 1px solid var(--border-color);
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
    margin-bottom: 40px;
}

.footer-column h3 {
    font-size: 1.3rem;
    margin-bottom: 20px;
    position: relative;
    padding-bottom: 10px;
}

.footer-column h3::after {
    content: '';
    position: absolute;
    left: 0;
    bottom: 0;
    width: 50px;
    height: 2px;
    background: var(--primary-color);
}

.footer-logo {
    max-height: 50px;
    margin-top: 15px;
}

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

.footer-column li {
    margin-bottom: 10px;
}

.footer-column a {
    color: var(--text-color);
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 8px;
}

.footer-column a:hover {
    color: var(--primary-color);
    text-decoration: none;
    padding-left: 5px;
}

.footer-column a i {
    font-size: 0.8rem;
}

.newsletter-form {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.newsletter-form input {
    padding: 12px 15px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    background: var(--bg-color);
    color: var(--text-color);
}

.newsletter-form button {
    padding: 12px;
    background: var(--primary-color);
    color: white;
    border: none;
    border-radius: var(--radius);
    cursor: pointer;
    transition: var(--transition);
}

.newsletter-form button:hover {
    background: var(--text-color);
}

.social-links {
    display: flex;
    gap: 15px;
    margin-bottom: 20px;
}

.social-links a {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--accent-color);
    color: var(--text-color);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
}

.social-links a:hover {
    background: var(--primary-color);
    color: white;
    transform: translateY(-3px);
}

.contact-info p {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 10px;
}

.footer-bottom {
    border-top: 1px solid var(--border-color);
    padding-top: 20px;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    gap: 15px;
}

.footer-links {
    display: flex;
    gap: 20px;
}

.footer-links a {
    color: var(--text-color);
}

.footer-links a:hover {
    color: var(--primary-color);
}

/* Back to Top Button */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: var(--primary-color);
    color: white;
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
    z-index: 99;
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
}

.back-to-top:hover {
    background: var(--text-color);
    transform: translateY(-5px);
}

/* ================ Responsive Styles ================ */
@media (max-width: 992px) {
    .main-navigation {
        display: none;
    }
    
    .mobile-menu-toggle {
        display: flex;
    }
    
    .header-actions {
        margin-left: auto;
    }
}

@media (max-width: 768px) {
    :root {
        --header-height: 70px;
    }
    
    .logo {
        font-size: 1.5rem;
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-bottom {
        flex-direction: column;
    }
    
    .footer-links {
        flex-direction: column;
        gap: 10px;
    }
}

@media (max-width: 576px) {
    :root {
        --header-height: 60px;
    }
    
    .logo-image {
        height: 30px;
    }
    
    .header-actions {
        gap: 10px;
    }
    
    .search-toggle, 
    .theme-toggle {
        font-size: 1rem;
    }
}