/*
Theme Name: KidsEdu English
Theme URI: https://edu.webcore.ca
Author: WebCore
Author URI: https://webcore.ca
Description: A fun and engaging online English learning platform for children ages 6-14. Features include vocabulary building, grammar lessons, reading comprehension, and interactive exercises.
Version: 1.0.0
License: GNU General Public License v2 or later
License URI: http://www.gnu.org/licenses/gpl-2.0.html
Text Domain: kidsedu-english
Tags: education, kids, english, learning, responsive
*/

/* CSS Variables - English Learning Theme Colors */
:root {
    --primary-blue: #4A90E2;
    --primary-teal: #00b7cd;
    --secondary-purple: #8E44AD;
    --accent-yellow: #F39C12;
    --accent-green: #27AE60;
    --accent-pink: #E91E63;
    --text-dark: #2C3E50;
    --text-light: #7F8C8D;
    --bg-light: #ECF0F1;
    --bg-white: #FFFFFF;
    --success: #2ECC71;
    --warning: #F39C12;
    --error: #E74C3C;
}

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

body {
    font-family: "Poppins", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    color: var(--text-dark);
    background-color: var(--bg-light);
    line-height: 1.6;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Header */
.site-header {
    background: linear-gradient(135deg, var(--primary-blue) 0%, var(--primary-teal) 100%);
    color: white;
    padding: 1rem 0;
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

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

.site-title {
    font-size: 2rem;
    font-weight: 700;
    color: white;
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 10px;
}

.site-title:hover {
    transform: scale(1.05);
    transition: transform 0.3s ease;
}

/* Navigation */
.main-navigation ul {
    list-style: none;
    display: flex;
    gap: 2rem;
}

.main-navigation a {
    color: white;
    text-decoration: none;
    font-weight: 500;
    transition: all 0.3s ease;
    padding: 0.5rem 1rem;
    border-radius: 20px;
}

.main-navigation a:hover {
    background: rgba(255,255,255,0.2);
    transform: translateY(-2px);
}

/* Hero Section */
.hero-section {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 5rem 0;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.hero-section::before {
    content: "📚 ✏️ 📖 ✨ 🌟";
    position: absolute;
    font-size: 4rem;
    opacity: 0.1;
    animation: float 6s ease-in-out infinite;
}

.hero-title {
    font-size: 3.5rem;
    margin-bottom: 1rem;
    animation: fadeInDown 1s ease;
}

.hero-subtitle {
    font-size: 1.5rem;
    margin-bottom: 2rem;
    opacity: 0.95;
}

.btn {
    display: inline-block;
    padding: 1rem 2.5rem;
    background: var(--accent-yellow);
    color: var(--text-dark);
    text-decoration: none;
    border-radius: 50px;
    font-weight: 600;
    font-size: 1.1rem;
    transition: all 0.3s ease;
    border: none;
    cursor: pointer;
    box-shadow: 0 4px 15px rgba(0,0,0,0.2);
}

.btn:hover {
    transform: translateY(-3px) scale(1.05);
    box-shadow: 0 6px 20px rgba(0,0,0,0.3);
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-teal), var(--primary-blue));
    color: white;
}

/* English Learning Categories */
.english-categories {
    padding: 4rem 0;
    background: white;
}

.section-title {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 3rem;
    color: var(--text-dark);
}

.categories-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.category-card {
    background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
    padding: 2rem;
    border-radius: 20px;
    text-align: center;
    transition: all 0.3s ease;
    cursor: pointer;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
}

.category-card:hover {
    transform: translateY(-10px) rotate(2deg);
    box-shadow: 0 10px 25px rgba(0,0,0,0.2);
}

.category-icon {
    font-size: 4rem;
    margin-bottom: 1rem;
    display: block;
}

.category-title {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
    color: var(--text-dark);
}

.category-description {
    color: var(--text-light);
    font-size: 0.95rem;
}

/* Course Cards */
.courses-section {
    padding: 4rem 0;
    background: var(--bg-light);
}

.courses-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 2rem;
}

.course-card {
    background: white;
    border-radius: 20px;
    overflow: hidden;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
    transition: all 0.3s ease;
}

.course-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 12px 24px rgba(0,0,0,0.15);
}

.course-thumbnail {
    width: 100%;
    height: 200px;
    object-fit: cover;
    background: linear-gradient(135deg, var(--primary-blue), var(--primary-teal));
}

.course-content {
    padding: 1.5rem;
}

.course-title {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
    color: var(--text-dark);
}

.course-meta {
    display: flex;
    gap: 1rem;
    margin-bottom: 1rem;
    flex-wrap: wrap;
}

.meta-item {
    background: var(--bg-light);
    padding: 0.25rem 0.75rem;
    border-radius: 15px;
    font-size: 0.85rem;
    color: var(--text-light);
}

.course-description {
    color: var(--text-light);
    margin-bottom: 1rem;
    line-height: 1.6;
}

.course-progress {
    background: var(--bg-light);
    height: 8px;
    border-radius: 10px;
    overflow: hidden;
    margin: 1rem 0;
}

.progress-bar {
    height: 100%;
    background: linear-gradient(90deg, var(--success), var(--accent-green));
    transition: width 0.5s ease;
}

/* Features Section */
.features-section {
    padding: 4rem 0;
    background: white;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2.5rem;
}

.feature-box {
    text-align: center;
    padding: 2rem;
}

.feature-icon {
    font-size: 3.5rem;
    margin-bottom: 1rem;
    display: block;
    animation: bounce 2s infinite;
}

.feature-title {
    font-size: 1.3rem;
    margin-bottom: 0.5rem;
    color: var(--text-dark);
}

/* Testimonials */
.testimonials-section {
    padding: 4rem 0;
    background: var(--bg-light);
}

.testimonial-card {
    background: white;
    padding: 2rem;
    border-radius: 15px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
    margin-bottom: 2rem;
}

.testimonial-text {
    font-style: italic;
    margin-bottom: 1rem;
    color: var(--text-dark);
}

.testimonial-author {
    font-weight: 600;
    color: var(--primary-blue);
}

/* Footer */
.site-footer {
    background: linear-gradient(135deg, var(--text-dark) 0%, #34495e 100%);
    color: white;
    padding: 3rem 0 1rem;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.footer-section h3 {
    margin-bottom: 1rem;
    color: var(--accent-yellow);
}

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

.footer-section a {
    color: rgba(255,255,255,0.8);
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-section a:hover {
    color: white;
}

.copyright {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid rgba(255,255,255,0.1);
    opacity: 0.7;
}

/* Animations */
@keyframes fadeInDown {
    from {
        opacity: 0;
        transform: translateY(-30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes bounce {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
}

@keyframes float {
    0%, 100% { transform: translateY(0px) rotate(0deg); }
    50% { transform: translateY(-20px) rotate(5deg); }
}

@keyframes wave {
    0%, 100% { transform: rotate(0deg); }
    25% { transform: rotate(10deg); }
    75% { transform: rotate(-10deg); }
}

/* Responsive Design */
@media (max-width: 768px) {
    .hero-title {
        font-size: 2.5rem;
    }
    
    .header-content {
        flex-direction: column;
        gap: 1rem;
    }
    
    .main-navigation ul {
        flex-direction: column;
        gap: 0.5rem;
    }
    
    .categories-grid,
    .courses-grid {
        grid-template-columns: 1fr;
    }
}

/* Utility Classes */
.text-center { text-align: center; }
.mt-1 { margin-top: 1rem; }
.mt-2 { margin-top: 2rem; }
.mt-3 { margin-top: 3rem; }
.mb-1 { margin-bottom: 1rem; }
.mb-2 { margin-bottom: 2rem; }
.mb-3 { margin-bottom: 3rem; }

/* ===== Enhanced Header Styles ===== */
.site-header {
    background: white;
    box-shadow: 0 2px 20px rgba(0,0,0,0.08);
    padding: 1.2rem 0;
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 2rem;
}

.header-left {
    flex-shrink: 0;
}

.site-logo {
    display: flex;
    align-items: center;
    gap: 12px;
    text-decoration: none;
    transition: transform 0.3s ease;
}

.site-logo:hover {
    transform: scale(1.05);
}

.logo-icon {
    font-size: 2.5rem;
    animation: wave 3s ease-in-out infinite;
}

.logo-text {
    display: flex;
    flex-direction: column;
}

.logo-title {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--primary-blue);
    line-height: 1;
}

.logo-subtitle {
    font-size: 0.9rem;
    color: var(--primary-teal);
    font-weight: 500;
    letter-spacing: 1px;
}

/* Navigation Styles */
.main-navigation {
    flex-grow: 1;
    display: flex;
    justify-content: flex-end;
}

.nav-menu {
    display: flex;
    gap: 0.5rem;
    align-items: center;
    list-style: none;
    margin: 0;
}

.nav-menu li {
    margin: 0;
}

.nav-menu a {
    color: var(--text-dark);
    text-decoration: none;
    padding: 0.7rem 1.2rem;
    border-radius: 25px;
    font-weight: 500;
    transition: all 0.3s ease;
    display: block;
}

.nav-menu a:hover {
    background: var(--bg-light);
    color: var(--primary-blue);
}

.btn-login {
    color: var(--primary-blue) !important;
    border: 2px solid var(--primary-blue);
}

.btn-signup {
    background: linear-gradient(135deg, var(--primary-teal), var(--primary-blue)) !important;
    color: white !important;
    font-weight: 600;
}

.btn-signup:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(74, 144, 226, 0.3);
}

/* Mobile Menu Toggle */
.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    gap: 4px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
}

.mobile-menu-toggle span {
    width: 25px;
    height: 3px;
    background: var(--primary-blue);
    border-radius: 3px;
    transition: all 0.3s ease;
}

/* ===== Enhanced Hero Section ===== */
.hero-section {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 6rem 0 8rem;
    position: relative;
    overflow: hidden;
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
}

.floating-elements {
    position: relative;
    width: 100%;
    height: 100%;
}

.float-element {
    position: absolute;
    font-size: 3rem;
    opacity: 0.15;
    animation: float 6s ease-in-out infinite;
}

.float-element:nth-child(2) {
    animation-delay: 1s;
}

.float-element:nth-child(3) {
    animation-delay: 2s;
}

.float-element:nth-child(4) {
    animation-delay: 1.5s;
}

.float-element:nth-child(5) {
    animation-delay: 2.5s;
}

.hero-container {
    position: relative;
    z-index: 10;
}

.hero-content {
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
}

.hero-badge {
    display: inline-block;
    background: rgba(255,255,255,0.2);
    padding: 0.5rem 1.5rem;
    border-radius: 50px;
    font-size: 0.95rem;
    margin-bottom: 1.5rem;
    backdrop-filter: blur(10px);
    animation: fadeInDown 0.8s ease;
}

.hero-title {
    font-size: 4rem;
    font-weight: 800;
    margin-bottom: 1.5rem;
    line-height: 1.2;
    animation: fadeInDown 1s ease;
}

.highlight-text {
    background: linear-gradient(135deg, #FFD700, #FFA500);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    position: relative;
}

.hero-subtitle {
    font-size: 1.3rem;
    margin-bottom: 2.5rem;
    opacity: 0.95;
    line-height: 1.6;
    animation: fadeInDown 1.2s ease;
}

.hero-cta {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: 3rem;
    animation: fadeInDown 1.4s ease;
}

.btn-large {
    padding: 1.2rem 3rem;
    font-size: 1.1rem;
}

.btn-secondary {
    background: rgba(255,255,255,0.2);
    color: white;
    backdrop-filter: blur(10px);
    border: 2px solid rgba(255,255,255,0.3);
}

.btn-secondary:hover {
    background: rgba(255,255,255,0.3);
}

.btn-white {
    background: white !important;
    color: var(--primary-blue) !important;
}

.btn-white:hover {
    box-shadow: 0 8px 25px rgba(255,255,255,0.3);
}

.hero-stats {
    display: flex;
    justify-content: center;
    gap: 3rem;
    flex-wrap: wrap;
    animation: fadeInDown 1.6s ease;
}

.stat-item {
    text-align: center;
}

.stat-number {
    font-size: 2.5rem;
    font-weight: 700;
    color: #FFD700;
}

.stat-label {
    font-size: 0.95rem;
    opacity: 0.9;
    margin-top: 0.25rem;
}

/* ===== How It Works Section ===== */
.how-it-works-section {
    padding: 5rem 0;
    background: white;
}

.steps-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 3rem;
    margin-top: 3rem;
}

.step-card {
    text-align: center;
    padding: 2rem;
    position: relative;
    background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
    border-radius: 20px;
    transition: all 0.3s ease;
}

.step-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 40px rgba(0,0,0,0.15);
}

.step-number {
    position: absolute;
    top: -20px;
    left: 50%;
    transform: translateX(-50%);
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, var(--primary-teal), var(--primary-blue));
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: 700;
    box-shadow: 0 4px 15px rgba(74, 144, 226, 0.4);
}

.step-icon {
    font-size: 4rem;
    margin: 2rem 0 1rem;
    display: block;
    animation: bounce 2s infinite;
}

.step-title {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--text-dark);
}

.step-description {
    color: var(--text-light);
    line-height: 1.6;
}

/* ===== CTA Section ===== */
.cta-section {
    background: linear-gradient(135deg, var(--primary-teal) 0%, var(--primary-blue) 100%);
    color: white;
    padding: 5rem 0;
    text-align: center;
}

.cta-content {
    max-width: 700px;
    margin: 0 auto;
}

.cta-title {
    font-size: 2.8rem;
    margin-bottom: 1rem;
    font-weight: 700;
}

.cta-subtitle {
    font-size: 1.3rem;
    margin-bottom: 2.5rem;
    opacity: 0.95;
}

/* ===== Enhanced Course Cards ===== */
.btn-course {
    width: 100%;
    text-align: center;
    background: linear-gradient(135deg, var(--primary-teal), var(--primary-blue));
    color: white;
}

.no-courses-message {
    grid-column: 1/-1;
    text-align: center;
    padding: 4rem 2rem;
}

.empty-state {
    max-width: 500px;
    margin: 0 auto;
}

.empty-icon {
    font-size: 5rem;
    display: block;
    margin-bottom: 1rem;
    animation: bounce 2s infinite;
}

.empty-state h3 {
    font-size: 2rem;
    color: var(--text-dark);
    margin-bottom: 0.5rem;
}

.empty-state p {
    font-size: 1.1rem;
    color: var(--text-light);
}

/* ===== Responsive Design for Header & Hero ===== */
@media (max-width: 968px) {
    .mobile-menu-toggle {
        display: flex;
    }
    
    .nav-menu {
        position: fixed;
        top: 80px;
        right: -100%;
        width: 280px;
        height: calc(100vh - 80px);
        background: white;
        flex-direction: column;
        padding: 2rem;
        box-shadow: -5px 0 15px rgba(0,0,0,0.1);
        transition: right 0.3s ease;
        gap: 0;
    }
    
    .nav-menu.active {
        right: 0;
    }
    
    .nav-menu li {
        width: 100%;
    }
    
    .nav-menu a {
        width: 100%;
        padding: 1rem;
        margin-bottom: 0.5rem;
    }
    
    .hero-title {
        font-size: 2.8rem;
    }
    
    .hero-subtitle {
        font-size: 1.1rem;
    }
    
    .hero-cta {
        flex-direction: column;
    }
    
    .hero-stats {
        gap: 2rem;
    }
    
    .stat-number {
        font-size: 2rem;
    }
    
    .cta-title {
        font-size: 2rem;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 2.2rem;
    }
    
    .logo-title {
        font-size: 1.4rem;
    }
    
    .steps-grid {
        grid-template-columns: 1fr;
    }
}

.site-footer {
    background: linear-gradient(135deg, #2C3E50 0%, #34495E 100%);
    color: rgba(255,255,255,0.9);
    padding: 4rem 0 0;
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1.5fr;
    gap: 3rem;
    margin-bottom: 3rem;
    padding-bottom: 3rem;
    border-bottom: 1px solid rgba(255,255,255,0.1);
}

/* Footer About Section */
.footer-about {
    max-width: 350px;
}

.footer-logo {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: white;
    display: flex;
    align-items: center;
    gap: 8px;
}

.footer-icon {
    font-size: 1.8rem;
}

.footer-description {
    color: rgba(255,255,255,0.7);
    line-height: 1.8;
    margin-bottom: 1.5rem;
    font-size: 0.95rem;
}

.footer-social {
    display: flex;
    gap: 1rem;
}

.social-link {
    width: 40px;
    height: 40px;
    background: rgba(255,255,255,0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    text-decoration: none;
    transition: all 0.3s ease;
    font-size: 1.2rem;
}

.social-link:hover {
    background: var(--primary-teal);
    transform: translateY(-3px);
}

/* Footer Sections */
.footer-title {
    color: white;
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
    position: relative;
    padding-bottom: 0.5rem;
}

.footer-title::after {
    content: "";
    position: absolute;
    bottom: 0;
    left: 0;
    width: 40px;
    height: 3px;
    background: var(--primary-teal);
    border-radius: 2px;
}

.footer-links {
    list-style: none;
    padding: 0;
}

.footer-links li {
    margin-bottom: 0.8rem;
}

.footer-links a {
    color: rgba(255,255,255,0.7);
    text-decoration: none;
    transition: all 0.3s ease;
    display: inline-block;
    font-size: 0.95rem;
}

.footer-links a:hover {
    color: white;
    transform: translateX(5px);
}

/* Footer Contact */
.footer-contact {
    list-style: none;
    padding: 0;
}

.footer-contact li {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 1rem;
    color: rgba(255,255,255,0.7);
    font-size: 0.95rem;
}

.contact-icon {
    font-size: 1.2rem;
}

.footer-contact a {
    color: rgba(255,255,255,0.7);
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-contact a:hover {
    color: white;
}

/* Footer Bottom */
.footer-bottom {
    padding: 2rem 0;
}

.footer-bottom-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
}

.copyright {
    color: rgba(255,255,255,0.6);
    font-size: 0.9rem;
    margin: 0;
}

.footer-legal {
    display: flex;
    gap: 1rem;
    align-items: center;
}

.footer-legal a {
    color: rgba(255,255,255,0.6);
    text-decoration: none;
    font-size: 0.9rem;
    transition: color 0.3s ease;
}

.footer-legal a:hover {
    color: white;
}

.separator {
    color: rgba(255,255,255,0.3);
}

/* Footer Responsive */
@media (max-width: 968px) {
    .footer-content {
        grid-template-columns: 1fr 1fr;
        gap: 2rem;
    }
}

@media (max-width: 600px) {
    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .footer-about {
        max-width: 100%;
    }
    
    .footer-social {
        justify-content: center;
    }
    
    .footer-title::after {
        left: 50%;
        transform: translateX(-50%);
    }
    
    .footer-bottom-content {
        flex-direction: column;
        text-align: center;
    }
    
    .footer-contact li {
        justify-content: center;
    }
}

.hero-wave {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    overflow: hidden;
    line-height: 0;
    transform: translateY(1px);
}

.hero-wave svg {
    position: relative;
    display: block;
    width: calc(100% + 1.3px);
    height: 100px;
}

@media (min-width: 768px) {
    .hero-wave svg {
        height: 150px;
    }
}