/* SchoolTools Landing Page Styles */

/* CSS Reset & Base */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* Colors - Modern Blue/Indigo Theme */
    --primary-color: #3b82f6;
    --primary-dark: #2563eb;
    --primary-light: #60a5fa;
    --secondary-color: #1e40af;
    --accent-color: #f59e0b;
    --success-color: #10b981;
    
    /* Neutral Colors */
    --gray-50: #f9fafb;
    --gray-100: #f3f4f6;
    --gray-200: #e5e7eb;
    --gray-300: #d1d5db;
    --gray-400: #9ca3af;
    --gray-500: #6b7280;
    --gray-600: #4b5563;
    --gray-700: #374151;
    --gray-800: #1f2937;
    --gray-900: #111827;
    
    /* Typography */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 1.875rem;
    --font-size-4xl: 2.25rem;
    --font-size-5xl: 3rem;
    
    /* Spacing */
    --spacing-1: 0.25rem;
    --spacing-2: 0.5rem;
    --spacing-3: 0.75rem;
    --spacing-4: 1rem;
    --spacing-5: 1.25rem;
    --spacing-6: 1.5rem;
    --spacing-8: 2rem;
    --spacing-12: 3rem;
    --spacing-16: 4rem;
    --spacing-20: 5rem;
    --spacing-24: 6rem;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    
    /* Border Radius */
    --radius-sm: 0.375rem;
    --radius: 0.5rem;
    --radius-md: 0.75rem;
    --radius-lg: 1rem;
    --radius-xl: 1.5rem;
    
    /* Animations */
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Base Styles */
html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: var(--font-family);
    line-height: 1.6;
    color: var(--gray-800);
    background-color: white;
    overflow-x: hidden;
}

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

/* Container */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-4);
}

@media (min-width: 768px) {
    .container {
        padding: 0 var(--spacing-6);
    }
}

/* Language Selector */
.language-selector {
    position: fixed;
    top: var(--spacing-4);
    right: var(--spacing-4);
    z-index: 1000;
}

@media (max-width: 767px) {
    .language-selector {
        top: var(--spacing-2);
        right: var(--spacing-16);
        z-index: 999;
    }
}

.language-selector select {
    background: white;
    border: 1px solid var(--gray-200);
    border-radius: var(--radius);
    padding: var(--spacing-2) var(--spacing-3);
    font-size: var(--font-size-sm);
    box-shadow: var(--shadow);
    cursor: pointer;
    transition: var(--transition);
}

.language-selector select:hover {
    border-color: var(--primary-color);
}

/* Header */
.header {
    position: sticky;
    top: 0;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--gray-200);
    z-index: 100;
    padding: var(--spacing-4) 0;
    width: 100%;
    left: 0;
    right: 0;
}

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

.logo {
    font-size: var(--font-size-2xl);
    font-weight: 800;
    color: var(--primary-color);
    text-decoration: none;
}

.nav {
    display: none;
    gap: var(--spacing-8);
    align-items: center;
}

@media (min-width: 768px) {
    .nav {
        display: flex;
    }
}

.nav a {
    text-decoration: none;
    color: var(--gray-600);
    font-weight: 500;
    transition: var(--transition);
}

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

.nav .cta-button {
    color: white !important;
}

.nav .cta-button:hover {
    color: white !important;
}

/* Mobile Menu */
.mobile-menu-toggle {
    display: flex;
    flex-direction: column;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--spacing-2);
}

@media (min-width: 768px) {
    .mobile-menu-toggle {
        display: none;
    }
}

.mobile-menu-toggle span {
    width: 25px;
    height: 3px;
    background: var(--gray-600);
    margin: 2px 0;
    transition: var(--transition);
}

/* Buttons */
.cta-button, .cta-primary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-3) var(--spacing-6);
    background: var(--primary-color);
    color: white;
    text-decoration: none;
    border-radius: var(--radius-md);
    font-weight: 600;
    font-size: var(--font-size-base);
    border: none;
    cursor: pointer;
    transition: var(--transition);
    box-shadow: var(--shadow);
}

.cta-button:hover, .cta-primary:hover {
    background: var(--primary-dark);
    box-shadow: var(--shadow-lg);
    transform: translateY(-1px);
}

.cta-secondary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-3) var(--spacing-6);
    background: transparent;
    color: var(--primary-color);
    text-decoration: none;
    border: 2px solid var(--primary-color);
    border-radius: var(--radius-md);
    font-weight: 600;
    font-size: var(--font-size-base);
    cursor: pointer;
    transition: var(--transition);
}

.cta-secondary:hover {
    background: var(--primary-color);
    color: white;
    transform: translateY(-1px);
}

/* Hero Section */
.hero {
    position: relative;
    background: linear-gradient(135deg, var(--gray-50) 0%, white 100%);
    padding: var(--spacing-20) 0 var(--spacing-16);
    overflow: hidden;
}

.hero-content {
    display: grid;
    gap: var(--spacing-12);
    align-items: center;
}

@media (min-width: 1024px) {
    .hero-content {
        grid-template-columns: 1fr 1fr;
        gap: var(--spacing-16);
    }
}

.hero-title {
    font-size: var(--font-size-4xl);
    font-weight: 800;
    line-height: 1.2;
    color: var(--gray-900);
    margin-bottom: var(--spacing-6);
}

@media (min-width: 768px) {
    .hero-title {
        font-size: var(--font-size-5xl);
    }
}

.hero-subtitle {
    font-size: var(--font-size-lg);
    color: var(--gray-600);
    margin-bottom: var(--spacing-8);
    line-height: 1.7;
}

.hero-cta {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-4);
    margin-bottom: var(--spacing-6);
}

@media (min-width: 640px) {
    .hero-cta {
        flex-direction: row;
    }
}

.hero-note {
    font-size: var(--font-size-sm);
    color: var(--gray-500);
    text-align: center;
}

@media (min-width: 640px) {
    .hero-note {
        text-align: left;
    }
}

.hero-visual {
    position: relative;
}

/* Hero Carousel */
.hero-carousel {
    position: relative;
    max-width: 600px;
    margin: 0 auto;
}

.carousel-container {
    position: relative;
    overflow: hidden;
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-xl);
}

.carousel-slides {
    display: flex;
    width: 400%;
    transition: transform 0.3s ease-out;
    transform: translateX(-25%); /* Start at first real slide */
}

.carousel-slide {
    flex: 0 0 25%;
    position: relative;
    width: 25%;
}

.carousel-slide.active {
    /* Keep for compatibility but not needed for display */
}

.carousel-slide img {
    width: 100%;
    height: auto;
    display: block;
}

.carousel-slide + .carousel-slide {
    border-left: 2px solid var(--gray-300);
}

.carousel-caption {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: linear-gradient(transparent, rgba(0, 0, 0, 0.8));
    color: white;
    padding: var(--spacing-6) var(--spacing-4) var(--spacing-4);
    text-align: center;
}

.carousel-caption h4 {
    font-size: var(--font-size-lg);
    font-weight: 600;
    margin-bottom: var(--spacing-2);
}

.carousel-caption p {
    font-size: var(--font-size-sm);
    opacity: 0.9;
}

.carousel-dots {
    display: flex;
    justify-content: center;
    gap: var(--spacing-2);
    margin-top: var(--spacing-4);
}

.carousel-dots .dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    border: none;
    background: var(--gray-300);
    cursor: pointer;
    transition: var(--transition);
}

.carousel-dots .dot.active {
    background: var(--primary-color);
}

.carousel-dots .dot:hover {
    background: var(--primary-light);
}

.hero-bg-decoration {
    position: absolute;
    top: -50%;
    right: -20%;
    width: 100%;
    height: 200%;
    background: radial-gradient(circle, rgba(59, 130, 246, 0.1) 0%, transparent 70%);
    pointer-events: none;
}

/* Stats Section */
.stats {
    background: white;
    padding: var(--spacing-16) 0;
    border-top: 1px solid var(--gray-200);
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-8);
    text-align: center;
}

@media (min-width: 768px) {
    .stats-grid {
        grid-template-columns: repeat(4, 1fr);
    }
}

.stat-number {
    font-size: var(--font-size-4xl);
    font-weight: 800;
    color: var(--primary-color);
    margin-bottom: var(--spacing-2);
}

.stat-label {
    font-size: var(--font-size-sm);
    color: var(--gray-600);
    font-weight: 500;
}

/* Section Headers */
.section-header {
    text-align: center;
    margin-bottom: var(--spacing-16);
}

.section-title {
    font-size: var(--font-size-3xl);
    font-weight: 800;
    color: var(--gray-900);
    margin-bottom: var(--spacing-4);
}

@media (min-width: 768px) {
    .section-title {
        font-size: var(--font-size-4xl);
    }
}

.section-subtitle {
    font-size: var(--font-size-lg);
    color: var(--gray-600);
    max-width: 600px;
    margin: 0 auto;
}

/* Educators Section */
.educators {
    background: white;
    padding: var(--spacing-20) 0;
    border-bottom: 1px solid var(--gray-200);
}

.educators-grid {
    display: grid;
    gap: var(--spacing-8);
    grid-template-columns: repeat(1, 1fr);
    margin-top: var(--spacing-12);
}

@media (min-width: 768px) {
    .educators-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

.educator-point {
    text-align: center;
    padding: var(--spacing-6);
}

.point-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto var(--spacing-6);
}

.point-icon i {
    font-size: var(--font-size-2xl);
    color: white;
}

.educator-point h3 {
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: var(--spacing-4);
}

.educator-point p {
    color: var(--gray-600);
    line-height: 1.7;
}

/* Features Section */
.features {
    background: var(--gray-50);
    padding: var(--spacing-20) 0;
}

.features-grid {
    display: grid;
    gap: var(--spacing-8);
}

@media (min-width: 1024px) {
    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

.feature-card {
    background: white;
    border-radius: var(--radius-xl);
    padding: var(--spacing-8);
    box-shadow: var(--shadow);
    transition: var(--transition);
    border: 1px solid var(--gray-200);
}

.feature-card:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-2px);
}

.feature-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--spacing-6);
}

.feature-icon i {
    font-size: var(--font-size-2xl);
    color: white;
}

.feature-title {
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: var(--spacing-4);
}

.feature-description {
    color: var(--gray-600);
    margin-bottom: var(--spacing-6);
    line-height: 1.7;
}

.feature-list {
    list-style: none;
}

.feature-list li {
    color: var(--gray-600);
    padding: var(--spacing-2) 0;
    position: relative;
    padding-left: var(--spacing-6);
}

.feature-list li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--success-color);
    font-weight: bold;
}

/* Benefits Section */
.benefits {
    padding: var(--spacing-20) 0;
    background: white;
}

.benefits-grid {
    display: grid;
    gap: var(--spacing-8);
    grid-template-columns: repeat(1, 1fr);
}

@media (min-width: 640px) {
    .benefits-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 1024px) {
    .benefits-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

.benefit-item {
    text-align: center;
    padding: var(--spacing-6);
    border-radius: var(--radius-lg);
    transition: var(--transition);
}

.benefit-item:hover {
    background: var(--gray-50);
}

.benefit-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, var(--primary-light), var(--primary-color));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto var(--spacing-6);
}

.benefit-icon i {
    font-size: var(--font-size-2xl);
    color: white;
}

.benefit-title {
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: var(--spacing-4);
}

.benefit-description {
    color: var(--gray-600);
    line-height: 1.7;
}

/* Testimonials Section */
.testimonials {
    background: var(--gray-50);
    padding: var(--spacing-20) 0;
}

.testimonials-grid {
    display: grid;
    gap: var(--spacing-8);
}

@media (min-width: 768px) {
    .testimonials-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 1024px) {
    .testimonials-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

.testimonial-card {
    background: white;
    border-radius: var(--radius-xl);
    padding: var(--spacing-8);
    box-shadow: var(--shadow);
    border: 1px solid var(--gray-200);
    transition: var(--transition);
}

.testimonial-card:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-2px);
}

.stars {
    display: flex;
    gap: var(--spacing-1);
    margin-bottom: var(--spacing-4);
}

.stars i {
    color: var(--accent-color);
}

.testimonial-text {
    color: var(--gray-700);
    font-style: italic;
    margin-bottom: var(--spacing-6);
    line-height: 1.7;
}

.author-name {
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: var(--spacing-1);
}

.author-title {
    color: var(--gray-500);
    font-size: var(--font-size-sm);
}

/* CTA Section */
.cta-section {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    padding: var(--spacing-20) 0;
    text-align: center;
    color: white;
}

.cta-title {
    font-size: var(--font-size-4xl);
    font-weight: 800;
    margin-bottom: var(--spacing-6);
}

@media (min-width: 768px) {
    .cta-title {
        font-size: var(--font-size-5xl);
    }
}

.cta-subtitle {
    font-size: var(--font-size-lg);
    margin-bottom: var(--spacing-8);
    opacity: 0.9;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.cta-buttons {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-4);
    justify-content: center;
    margin-bottom: var(--spacing-6);
}

@media (min-width: 640px) {
    .cta-buttons {
        flex-direction: row;
    }
}

.cta-section .cta-primary {
    background: white;
    color: var(--primary-color);
}

.cta-section .cta-primary:hover {
    background: var(--gray-100);
    transform: translateY(-2px);
}

.cta-section .cta-secondary {
    border-color: white;
    color: white;
}

.cta-section .cta-secondary:hover {
    background: white;
    color: var(--primary-color);
}

.cta-note {
    font-size: var(--font-size-sm);
    opacity: 0.8;
}

/* Footer */
.footer {
    background: var(--gray-900);
    color: var(--gray-300);
    padding: var(--spacing-16) 0 var(--spacing-8);
}

.footer-content {
    display: grid;
    gap: var(--spacing-8);
    margin-bottom: var(--spacing-8);
}

@media (min-width: 768px) {
    .footer-content {
        grid-template-columns: 1fr 2fr;
        gap: var(--spacing-12);
    }
}

.footer-logo {
    font-size: var(--font-size-2xl);
    font-weight: 800;
    color: var(--primary-light);
    margin-bottom: var(--spacing-4);
}

.footer-description {
    color: var(--gray-400);
    line-height: 1.7;
}

.footer-links {
    display: grid;
    gap: var(--spacing-8);
    grid-template-columns: repeat(3, 1fr);
}

.footer-column h4 {
    color: white;
    font-weight: 600;
    margin-bottom: var(--spacing-4);
}

.footer-column a {
    display: block;
    color: var(--gray-400);
    text-decoration: none;
    margin-bottom: var(--spacing-2);
    transition: var(--transition);
}

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

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: var(--spacing-8);
    border-top: 1px solid var(--gray-700);
    flex-direction: column;
    gap: var(--spacing-4);
}

@media (min-width: 640px) {
    .footer-bottom {
        flex-direction: row;
        gap: 0;
    }
}

.footer-social {
    display: flex;
    gap: var(--spacing-4);
}

.footer-social a {
    color: var(--gray-400);
    font-size: var(--font-size-lg);
    transition: var(--transition);
}

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

/* Modal */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 2000;
}

.modal-content {
    background: white;
    border-radius: var(--radius-xl);
    padding: var(--spacing-8);
    max-width: 500px;
    width: 90%;
    max-height: 90vh;
    overflow-y: auto;
    position: relative;
}

.modal-close {
    position: absolute;
    top: var(--spacing-4);
    right: var(--spacing-6);
    font-size: var(--font-size-2xl);
    color: var(--gray-400);
    cursor: pointer;
    line-height: 1;
}

.modal-close:hover {
    color: var(--gray-600);
}

.modal h3 {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    margin-bottom: var(--spacing-4);
    color: var(--gray-900);
}

.modal p {
    color: var(--gray-600);
    margin-bottom: var(--spacing-6);
    line-height: 1.7;
}

.demo-form {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-4);
}

.demo-form input,
.demo-form select,
.demo-form textarea {
    padding: var(--spacing-3);
    border: 1px solid var(--gray-300);
    border-radius: var(--radius);
    font-size: var(--font-size-base);
    transition: var(--transition);
}

.demo-form input:focus,
.demo-form select:focus,
.demo-form textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

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

.hero-content,
.feature-card,
.benefit-item,
.testimonial-card {
    animation: fadeInUp 0.6s ease-out;
}

/* Responsive Design */
@media (max-width: 640px) {
    .hero {
        padding: var(--spacing-16) 0 var(--spacing-12);
    }
    
    .hero-title {
        font-size: var(--font-size-3xl);
    }
    
    .section-title {
        font-size: var(--font-size-2xl);
    }
    
    .cta-title {
        font-size: var(--font-size-3xl);
    }
}

/* Loading States */
.loading {
    opacity: 0.7;
    pointer-events: none;
}

/* Focus Visible */
.cta-primary:focus-visible,
.cta-secondary:focus-visible,
.cta-button:focus-visible {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}

/* Smooth Scrolling Enhancement */
@media (prefers-reduced-motion: no-preference) {
    html {
        scroll-behavior: smooth;
    }
}

/* High Contrast Mode */
@media (prefers-contrast: high) {
    .hero-bg-decoration {
        display: none;
    }
    
    .feature-card,
    .testimonial-card {
        border: 2px solid var(--gray-300);
    }
}