/* ========================================
   ShikshaFlow - Enhanced CSS
   Modern Educational Platform Design
   ======================================== */

/* 1. Root Variables & Design Tokens */
/* 1. Root Variables & Design Tokens - Color Accurate Version */
:root {
    /* Primary Brand Colors (True Purples) */
    --primary-purple: #6366f1;       /* Modern Indigo/Purple */
    --primary-purple-dark: #4f46e5;  /* Deep Purple */
    --primary-purple-light: #818cf8; /* Soft Purple */
    
    /* Secondary Colors (Corrected Naming) */
    --accent-pink: #ec4899;    /* Actual Pink */
    --accent-blue: #3b82f6;    /* Standard Brand Blue */
    --accent-orange: #f59e0b;  /* Warm Orange */
    --accent-cyan: #06b6d4;    /* Bright Cyan */
    --accent-green: #10b981;   /* Emerald Green */
    
    /* Neutral Colors */
    --dark: #0f172a;           /* Navy Dark */
    --dark-gray: #334155;
    --medium-gray: #64748b;
    --light-gray: #cbd5e1;
    --off-white: #f8fafc;
    --white: #ffffff;
    
    /* Semantic Colors */
    --text-primary: #1e293b;
    --text-secondary: #475569;
    --text-muted: #94a3b8;
    --border-color: #e2e8f0;
    --shadow-color: rgba(0, 0, 0, 0.1);

    /* Rest of variables (Typography, Spacing, etc.) remain same... */
    --font-primary: 'Poppins', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-heading: 'Poppins', sans-serif;
    --spacing-xs: 8px;
    --spacing-sm: 16px;
    --spacing-md: 24px;
    --spacing-lg: 32px;
    --spacing-xl: 48px;
    --spacing-2xl: 64px;
    --spacing-3xl: 80px;
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --radius-full: 50px;
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 15px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 8px 30px rgba(0, 0, 0, 0.12);
    --shadow-xl: 0 15px 40px rgba(99, 102, 241, 0.3); /* Adjusted for purple */
    --transition-base: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-fast: all 0.15s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}
/* 2. Reset & Base Styles */
*,
*::before,
*::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-primary);
    color: var(--text-primary);
    background-color: var(--white);
    line-height: 1.6;
    overflow-x: hidden;
}

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

ul,
ol {
    list-style: none;
}

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

button {
    font-family: inherit;
    cursor: pointer;
    border: none;
    background: none;
}

/* 3. Layout Utilities */
.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

.section-padding {
    padding: var(--spacing-3xl) 0;
}

.dark-section {
    background-color: var(--off-white);
}

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

/* Spacing Utilities */
.mt-1 { margin-top: var(--spacing-sm); }
.mt-2 { margin-top: var(--spacing-md); }
.mb-1 { margin-bottom: var(--spacing-sm); }
.mb-2 { margin-bottom: var(--spacing-md); }

/* 4. Typography */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    color: var(--text-primary);
    line-height: 1.2;
    font-weight: 700;
}

.sub-title {
    font-size: 0.875rem;
    color: var(--primary-purple);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 2px;
    margin-bottom: var(--spacing-sm);
    display: inline-block;
}

.main-title {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: var(--spacing-md);
    color: var(--dark);
}

.gradient-text {
    background: linear-gradient(135deg, var(--primary-purple) 0%, var(--primary-purple-dark) 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    animation: gradientShift 3s ease infinite;
}

@keyframes gradientShift {
    0%, 100% { filter: hue-rotate(0deg); }
    50% { filter: hue-rotate(15deg); }
}

/* 5. Header & Navigation */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    background-color: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow-sm);
    transition: var(--transition-base);
}

.header.scrolled {
    box-shadow: var(--shadow-md);
}

.nav-flex {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 70px;
}

.logo {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--dark);
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    transition: var(--transition-base);
}

.logo span {
    color: var(--primary-purple);
}

.logo:hover {
    transform: translateY(-2px);
}

.tagline-header {
    font-size: 0.75rem;
    font-weight: 500;
    color: var(--text-secondary);
    margin-left: var(--spacing-xs);
}

.nav-menu {
    display: flex;
    gap: var(--spacing-lg);
    align-items: center;
}

.nav-link {
    color: var(--text-primary);
    font-weight: 500;
    font-size: 0.9375rem;
    padding: var(--spacing-xs) 0;
    position: relative;
    transition: var(--transition-base);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--primary-purple), var(--accent-pink));
    transition: width 0.3s ease;
}

.nav-link:hover::after,
.nav-link.active::after {
    width: 100%;
}

.nav-link:hover {
    color: var(--primary-purple);
}

.menu-toggle {
    display: none;
    font-size: 1.5rem;
    color: var(--dark);
    cursor: pointer;
    padding: var(--spacing-xs);
    transition: var(--transition-base);
}

.menu-toggle:hover {
    color: var(--primary-purple);
}

/* 6. Buttons & CTAs */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-xs);
    padding: 12px 28px;
    border-radius: var(--radius-full);
    font-weight: 600;
    font-size: 0.9375rem;
    border: 2px solid transparent;
    transition: var(--transition-base);
    cursor: pointer;
    white-space: nowrap;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-purple) 0%, var(--primary-purple-dark) 100%);
    color: var(--white);
    box-shadow: var(--shadow-xl);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 20px 50px rgba(102, 126, 234, 0.4);
}

.btn-secondary {
    background: var(--white);
    color: var(--primary-purple);
    border-color: var(--primary-purple);
    box-shadow: var(--shadow-sm);
}

.btn-secondary:hover {
    background: var(--primary-purple);
    color: var(--white);
    transform: translateY(-3px);
    box-shadow: var(--shadow-md);
}

.btn-optional {
    background: linear-gradient(135deg, var(--accent-orange) 0%, #ffb84d 100%);
    color: var(--dark);
    box-shadow: var(--shadow-md);
}

.btn-optional:hover {
    transform: translateY(-3px);
    box-shadow: 0 15px 40px rgba(255, 204, 129, 0.4);
}

.btn-contact {
    background: linear-gradient(135deg, var(--accent-cyan) 0%, #5fc3d4 100%);
    color: var(--white);
    padding: 10px 24px;
    border-radius: var(--radius-md);
}

.btn-contact:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 30px rgba(126, 209, 226, 0.3);
}

.btn-large {
    padding: 16px 36px;
    font-size: 1rem;
}

.cta-group {
    display: flex;
    gap: var(--spacing-sm);
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: var(--spacing-xl);
}

/* 7. Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding: 120px 50px 50px;
    background: var(--white);
    position: relative;
    overflow: hidden;
}

.particles-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
}

.hero-container {
    max-width: 1400px;
    margin: 0 auto;
    width: 100%;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
    position: relative;
    z-index: 10;
}

.hero-content {
    animation: fadeInLeft 1s ease;
}

@keyframes fadeInLeft {
    from {
        opacity: 0;
        transform: translateX(-50px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.hero-content h1 {
    font-size: 3.5rem;
    line-height: 1.2;
    margin-bottom: var(--spacing-md);
    color: var(--dark);
}

.hero-content p {
    font-size: 1.125rem;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-lg);
    line-height: 1.8;
    max-width: 600px;
}

/* 8. Feature Cards */
.features {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-md);
    margin-top: var(--spacing-xl);
}

.feature-card {
    padding: var(--spacing-md);
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.05) 0%, rgba(102, 126, 234, 0.02) 100%);
    border-radius: var(--radius-lg);
    border: 1px solid rgba(102, 126, 234, 0.1);
    transition: var(--transition-base);
    cursor: pointer;
}

.feature-card:hover {
    transform: translateY(-8px);
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.1) 0%, rgba(102, 126, 234, 0.05) 100%);
    box-shadow: 0 12px 35px rgba(102, 126, 234, 0.15);
    border-color: var(--primary-purple);
}

.feature-icon {
    font-size: 2rem;
    margin-bottom: var(--spacing-sm);
}

.feature-title {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-xs);
}

.feature-desc {
    font-size: 0.875rem;
    color: var(--text-secondary);
}

/* 9. Bongo Cat Container */
.bongo-container {
    width: 100%;
    height: auto;       /* Let the SVG define the height */
    display: flex;
    align-items: center; /* Center the cat inside its own box */
    justify-content: center;
    margin: 0;          /* Remove extra spacing */
}

@keyframes fadeInRight {
    from {
        opacity: 0;
        transform: translateX(50px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

/* 10. Section Headings */
.section-heading {
    margin-bottom: var(--spacing-xl);
}

.section-heading .main-title {
    font-size: 2.5rem;
}

/* 11. Resource Cards */
.resource-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-lg);
    margin-top: var(--spacing-xl);
}

.resource-card {
    background: var(--white);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    display: flex;
    flex-direction: column;
    border: 1px solid var(--border-color);
    transition: var(--transition-base);
    position: relative;
    overflow: hidden;
}

.resource-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-purple), var(--accent-pink));
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.3s ease;
}

.resource-card:hover::before {
    transform: scaleX(1);
}

.resource-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary-purple);
}

.card-icon {
    font-size: 2.5rem;
    margin-bottom: var(--spacing-sm);
    background: linear-gradient(135deg, var(--primary-purple), var(--accent-pink));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.resource-card h4 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
    color: var(--text-primary);
}

.resource-card p {
    flex-grow: 1;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-md);
    line-height: 1.6;
}

.card-link {
    color: var(--primary-purple);
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    transition: var(--transition-base);
}

.card-link:hover {
    color: var(--accent-pink);
    gap: var(--spacing-sm);
}

/* 12. About Section */
.about-flex {
    display: flex;
    gap: var(--spacing-2xl);
    align-items: center;
}

.about-image-box {
    flex: 1;
    max-width: 500px;
    position: relative;
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}

.about-image-box::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.2) 0%, transparent 100%);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.about-image-box:hover::after {
    opacity: 1;
}

.about-image-box img {
    width: 100%;
    height: auto;
    transition: transform 0.5s ease;
}

.about-image-box:hover img {
    transform: scale(1.05);
}

.about-content {
    flex: 1.5;
}

.about-content p {
    font-size: 1.0625rem;
    line-height: 1.8;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-md);
}

/* 13. Contact Section */
.contact-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-lg);
    margin-top: var(--spacing-xl);
}

.contact-card {
    text-align: center;
    padding: var(--spacing-xl);
    border-radius: var(--radius-lg);
    background: var(--white);
    box-shadow: var(--shadow-md);
    border: 1px solid var(--border-color);
    transition: var(--transition-base);
    position: relative;
    overflow: hidden;
}

.contact-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.05) 0%, transparent 100%);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.contact-card:hover::before {
    opacity: 1;
}

.contact-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary-purple);
}

.contact-card i {
    font-size: 2.5rem;
    margin-bottom: var(--spacing-md);
    background: linear-gradient(135deg, var(--primary-purple), var(--accent-cyan));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.contact-card h4 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
    color: var(--text-primary);
}

.contact-card p {
    color: var(--text-secondary);
    font-size: 1rem;
}

/* 14. Footer */
.footer {
    padding: var(--spacing-xl) 0 var(--spacing-md);
    background: linear-gradient(135deg, var(--dark) 0%, var(--dark-gray) 100%);
    color: var(--off-white);
}

.footer-social {
    display: flex;
    justify-content: center;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
}

.footer-social a {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.1);
    color: var(--white);
    font-size: 1.25rem;
    transition: var(--transition-base);
}

.footer-social a:hover {
    background: var(--primary-purple);
    transform: translateY(-4px);
    box-shadow: 0 8px 20px rgba(102, 126, 234, 0.3);
}

.copyright-text {
    font-size: 0.875rem;
    opacity: 0.8;
    margin-top: var(--spacing-md);
}

.footer a[href*="privacy"] {
    color: var(--primary-purple-light);
    text-decoration: underline;
    transition: var(--transition-base);
}

.footer a[href*="privacy"]:hover {
    color: var(--white);
}

/* 15. Popup Styles */
.popup-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(4px);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

.popup-box {
    background: var(--white);
    padding: var(--spacing-lg);
    width: 90%;
    max-width: 400px;
    border-radius: var(--radius-lg);
    text-align: center;
    position: relative;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    animation: popupSlide 0.3s ease;
}

@keyframes popupSlide {
    from {
        opacity: 0;
        transform: translateY(-20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.popup-box h3 {
    color: var(--primary-purple);
    font-size: 1.5rem;
    margin-bottom: var(--spacing-sm);
}

.popup-box p {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-md);
    line-height: 1.6;
}

.popup-box button {
    width: 100%;
    padding: 14px;
    border-radius: var(--radius-md);
    background: linear-gradient(135deg, var(--primary-purple), var(--primary-purple-dark));
    color: var(--white);
    font-weight: 600;
    font-size: 1rem;
    transition: var(--transition-base);
}

.popup-box button:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(102, 126, 234, 0.3);
}

.close-btn {
    position: absolute;
    top: var(--spacing-sm);
    right: var(--spacing-sm);
    font-size: 1.5rem;
    color: var(--light-gray);
    cursor: pointer;
    transition: var(--transition-base);
}

.close-btn:hover {
    color: var(--dark);
    transform: rotate(90deg);
}

.skip-text {
    margin-top: var(--spacing-sm);
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.skip-text a {
    color: var(--primary-purple);
    font-weight: 500;
}

.skip-text a:hover {
    text-decoration: underline;
}

/* 16. Responsive Design */
@media (max-width: 1200px) {
    .hero-content h1 {
        font-size: 3rem;
    }
    
    .main-title {
        font-size: 2.25rem;
    }
}

@media (max-width: 1024px) {
    .hero-container {
        grid-template-columns: 1fr;
        gap: var(--spacing-xl);
    }
    
    .hero-content h1 {
        font-size: 2.5rem;
    }
    
    .bongo-container {
        height: 60vh;
    }
    
    .features {
        grid-template-columns: 1fr;
    }
    
    .about-flex {
        flex-direction: column;
        gap: var(--spacing-xl);
    }
    
    .about-image-box {
        max-width: 100%;
    }
}

@media (max-width: 768px) {
    /* Navigation */
    .menu-toggle {
        display: block;
    }
    
    .nav-menu {
        position: fixed;
        top: 0;
        right: 0;
        width: 280px;
        height: 100vh;
        background: linear-gradient(135deg, var(--dark) 0%, var(--dark-gray) 100%);
        flex-direction: column;
        padding: 80px var(--spacing-md) var(--spacing-md);
        transform: translateX(100%);
        transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
        box-shadow: -5px 0 20px rgba(0, 0, 0, 0.3);
        align-items: flex-start;
        gap: 0;
    }
    
    .nav-menu.active {
        transform: translateX(0);
    }
    
    .nav-link {
        color: var(--off-white);
        width: 100%;
        padding: var(--spacing-sm);
        border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    }
    
    .nav-link::after {
        display: none;
    }
    
    .nav-link:hover {
        color: var(--primary-purple-light);
        background: rgba(255, 255, 255, 0.05);
    }
    
    .btn-contact {
        margin-top: var(--spacing-md);
        width: 100%;
    }
    
    /* Hero */
    .hero {
        padding: 100px var(--spacing-md) var(--spacing-md);
    }
    
    .hero-content h1 {
        font-size: 2rem;
    }
    
    .hero-content p {
        font-size: 1rem;
    }
    
    .cta-group {
        flex-direction: column;
        width: 100%;
    }
    
    .btn-large {
        width: 100%;
    }
    
    /* Sections */
    .section-padding {
        padding: var(--spacing-2xl) 0;
    }
    
    .main-title {
        font-size: 1.75rem;
    }
    
    .resource-grid,
    .contact-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }
}

@media (max-width: 480px) {
    .hero-content h1 {
        font-size: 1.75rem;
    }
    
    .main-title {
        font-size: 1.5rem;
    }
    
    .features {
        gap: var(--spacing-sm);
    }
}

/* 17. Utility Classes */
.fade-in {
    animation: fadeIn 0.6s ease;
}

.slide-up {
    animation: slideUp 0.6s ease;
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* 18. Print Styles */
@media print {
    .header,
    .footer,
    .btn,
    .popup-overlay {
        display: none;
    }
    
    body {
        color: #000;
        background: #fff;
    }
}