/* 
   Plaula - Main Stylesheet
   A responsive landing page for Plaula lesson plan management platform
*/

/* Base Styles
-------------------------------------------------------------- */
:root {
    /* Color palette */
    --primary-color: #4A6DE5;        /* Primary blue */
    --primary-dark: #2D4DB6;         /* Dark blue */
    --secondary-color: #62BB47;      /* Green */
    --secondary-dark: #3D7A2E;       /* Dark green */
    --accent-color: #FFD166;         /* Yellow */
    --dark-color: #333333;           /* Dark gray for text */
    --light-color: #F8F9FA;          /* Light gray for backgrounds */
    --white: #FFFFFF;
    --gray-100: #F8F9FA;
    --gray-200: #E9ECEF;
    --gray-300: #DEE2E6;
    --gray-400: #CED4DA;
    --gray-500: #ADB5BD;
    --gray-600: #6C757D;
    --gray-700: #495057;
    --gray-800: #343A40;
    --gray-900: #212529;
    
    /* Typography */
    --font-heading: 'Montserrat', sans-serif;
    --font-body: 'Open Sans', sans-serif;
    
    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-xxl: 3rem;
    
    /* Borders */
    --border-radius-sm: 0.25rem;
    --border-radius-md: 0.5rem;
    --border-radius-lg: 1rem;
    
    /* Shadows */
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1);
    
    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
}

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

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-body);
    color: var(--dark-color);
    line-height: 1.6;
    background-color: var(--white);
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: var(--spacing-md);
    color: var(--dark-color);
}

h1 {
    font-size: 2.5rem;
}

h2 {
    font-size: 2rem;
}

h3 {
    font-size: 1.5rem;
}

h4 {
    font-size: 1.25rem;
}

p {
    margin-bottom: var(--spacing-md);
}

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

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

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

ul {
    list-style: none;
}

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

section {
    padding: var(--spacing-xxl) 0;
}

.section-header {
    text-align: center;
    margin-bottom: var(--spacing-xxl);
}

.section-header h2 {
    color: var(--primary-dark);
    margin-bottom: var(--spacing-sm);
}

.section-header p {
    font-size: 1.1rem;
    color: var(--gray-600);
}

/* Buttons
-------------------------------------------------------------- */
.btn {
    display: inline-block;
    font-family: var(--font-heading);
    font-weight: 600;
    text-align: center;
    white-space: nowrap;
    vertical-align: middle;
    user-select: none;
    border: 1px solid transparent;
    padding: 0.75rem 1.5rem;
    font-size: 1rem;
    line-height: 1.5;
    border-radius: var(--border-radius-md);
    transition: all var(--transition-normal);
    cursor: pointer;
}

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

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

.btn-secondary {
    background-color: var(--white);
    color: var(--primary-color);
    border: 2px solid var(--primary-color);
}

.btn-secondary:hover {
    background-color: var(--gray-100);
    color: var(--primary-dark);
    border-color: var(--primary-dark);
}

.btn-large {
    padding: 1rem 2rem;
    font-size: 1.1rem;
}

/* Header & Navigation
-------------------------------------------------------------- */
.header {
    background-color: var(--white);
    box-shadow: var(--shadow-sm);
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    transition: all var(--transition-normal);
}

.header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-md) var(--spacing-lg);
}

.logo h1 {
    font-size: 1.8rem;
    margin: 0;
    color: var(--primary-color);
}

.main-nav {
    display: flex;
    align-items: center;
}

.nav-list {
    display: flex;
    align-items: center;
}

.nav-list li {
    margin-left: var(--spacing-lg);
}

.nav-list a {
    color: var(--gray-700);
    font-weight: 500;
    transition: color var(--transition-fast);
}

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

.login-btn {
    background-color: var(--primary-color);
    color: var(--white) !important;
    padding: 0.5rem 1.5rem;
    border-radius: var(--border-radius-md);
    font-weight: 600;
    transition: background-color var(--transition-fast);
}

.login-btn:hover {
    background-color: var(--primary-dark);
}

.menu-toggle {
    display: none;
    background: none;
    border: none;
    font-size: 1.5rem;
    color: var(--primary-color);
    cursor: pointer;
}

/* Hero Section
-------------------------------------------------------------- */
.hero {
    padding: 8rem 0 4rem;
    background-color: var(--light-color);
    position: relative;
    overflow: hidden;
}

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

.hero-content {
    flex: 1;
    max-width: 600px;
}

.hero-content h2 {
    font-size: 2.5rem;
    color: var(--primary-dark);
    margin-bottom: var(--spacing-lg);
}

.hero-content p {
    font-size: 1.2rem;
    color: var(--gray-700);
    margin-bottom: var(--spacing-xl);
}

.hero-buttons {
    display: flex;
    gap: var(--spacing-md);
}

.hero-image {
    flex: 1;
    display: flex;
    justify-content: center;
    align-items: center;
}

.hero-svg {
    max-width: 100%;
    height: auto;
    max-height: 400px;
}

/* Features Section
-------------------------------------------------------------- */
.features {
    background-color: var(--white);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: var(--spacing-xl);
}

.feature-card {
    background-color: var(--white);
    padding: var(--spacing-xl);
    border-radius: var(--border-radius-md);
    box-shadow: var(--shadow-md);
    transition: transform var(--transition-normal);
    text-align: center;
}

.feature-card:hover {
    transform: translateY(-5px);
}

.feature-icon {
    display: flex;
    justify-content: center;
    align-items: center;
    width: 80px;
    height: 80px;
    margin: 0 auto var(--spacing-lg);
    background-color: var(--primary-color);
    color: var(--white);
    border-radius: 50%;
    font-size: 2rem;
}

.feature-card h3 {
    color: var(--primary-dark);
    margin-bottom: var(--spacing-md);
}

/* Benefits Section
-------------------------------------------------------------- */
.benefits {
    background-color: var(--light-color);
}

.benefits-wrapper {
    display: flex;
    align-items: center;
    gap: var(--spacing-xxl);
}

.benefits-content {
    flex: 1;
}

.benefit-item {
    display: flex;
    align-items: flex-start;
    margin-bottom: var(--spacing-xl);
}

.benefit-item i {
    font-size: 1.8rem;
    color: var(--primary-color);
    margin-right: var(--spacing-lg);
    padding-top: var(--spacing-xs);
}

.benefit-item h3 {
    margin-bottom: var(--spacing-sm);
    color: var(--primary-dark);
}

.benefit-item p {
    color: var(--gray-700);
}

.benefits-image {
    flex: 1;
    display: flex;
    justify-content: center;
    align-items: center;
}

.benefits-svg {
    max-width: 100%;
    height: auto;
    max-height: 400px;
}

/* Call to Action
-------------------------------------------------------------- */
.cta {
    background-color: var(--primary-color);
    color: var(--white);
    text-align: center;
    padding: var(--spacing-xxl) 0;
}

.cta h2 {
    color: var(--white);
    font-size: 2.2rem;
    margin-bottom: var(--spacing-md);
}

.cta p {
    color: var(--white);
    font-size: 1.2rem;
    margin-bottom: var(--spacing-xl);
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

.cta .btn {
    background-color: var(--white);
    color: var(--primary-color);
    border: none;
}

.cta .btn:hover {
    background-color: var(--gray-200);
}

/* About Section
-------------------------------------------------------------- */
.about {
    background-color: var(--white);
}

.about-content {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xl);
}

.about-text {
    max-width: 800px;
    margin: 0 auto;
}

.about-text p {
    color: var(--gray-700);
    font-size: 1.1rem;
    margin-bottom: var(--spacing-md);
}

.about-stats {
    display: flex;
    justify-content: space-around;
    flex-wrap: wrap;
    margin-top: var(--spacing-lg);
}

.stat {
    text-align: center;
    padding: var(--spacing-md);
}

.stat-number {
    display: block;
    font-family: var(--font-heading);
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: var(--spacing-xs);
}

.stat-text {
    font-size: 1.1rem;
    color: var(--gray-600);
}

/* Testimonials
-------------------------------------------------------------- */
.testimonials {
    background-color: var(--light-color);
}

.testimonials-slider {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-xl);
    justify-content: center;
}

.testimonial {
    background-color: var(--white);
    border-radius: var(--border-radius-md);
    padding: var(--spacing-xl);
    box-shadow: var(--shadow-md);
    max-width: 500px;
    flex: 1;
    min-width: 300px;
}

.testimonial-content {
    margin-bottom: var(--spacing-lg);
}

.testimonial-content p {
    font-style: italic;
    font-size: 1.1rem;
    color: var(--gray-700);
}

.testimonial-author {
    display: flex;
    align-items: center;
}

.author-info h4 {
    color: var(--primary-dark);
    margin-bottom: 0;
}

.author-info p {
    color: var(--gray-600);
    margin-bottom: 0;
}

/* Contact Section
-------------------------------------------------------------- */
.contact {
    background-color: var(--white);
}

.contact-wrapper {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-xxl);
}

.contact-info {
    flex: 1;
    min-width: 300px;
}

.contact-item {
    display: flex;
    align-items: flex-start;
    margin-bottom: var(--spacing-xl);
}

.contact-item i {
    font-size: 1.5rem;
    color: var(--primary-color);
    margin-right: var(--spacing-lg);
    padding-top: var(--spacing-xs);
}

.contact-item h3 {
    margin-bottom: var(--spacing-sm);
    color: var(--primary-dark);
}

.contact-item p {
    color: var(--gray-700);
}

.social-links {
    display: flex;
    gap: var(--spacing-md);
    margin-top: var(--spacing-xl);
}

.social-link {
    display: flex;
    justify-content: center;
    align-items: center;
    width: 40px;
    height: 40px;
    background-color: var(--light-color);
    color: var(--primary-color);
    border-radius: 50%;
    transition: all var(--transition-fast);
}

.social-link:hover {
    background-color: var(--primary-color);
    color: var(--white);
}

.contact-form {
    flex: 1;
    min-width: 300px;
}

.form-group {
    margin-bottom: var(--spacing-lg);
}

.form-group label {
    display: block;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
    color: var(--gray-700);
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: var(--spacing-md);
    border: 1px solid var(--gray-300);
    border-radius: var(--border-radius-md);
    font-family: var(--font-body);
    font-size: 1rem;
    transition: border-color var(--transition-fast);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
}

/* Footer
-------------------------------------------------------------- */
.footer {
    background-color: var(--gray-800);
    color: var(--white);
    padding: var(--spacing-xxl) 0 var(--spacing-lg);
}

.footer-content {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-xxl);
    margin-bottom: var(--spacing-xxl);
}

.footer-logo h3 {
    color: var(--white);
    font-size: 1.8rem;
    margin-bottom: var(--spacing-sm);
}

.footer-logo p {
    color: var(--gray-400);
}

.footer-links {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-xxl);
    flex: 1;
    justify-content: space-around;
}

.footer-column h4 {
    color: var(--white);
    margin-bottom: var(--spacing-lg);
    font-size: 1.1rem;
}

.footer-column ul li {
    margin-bottom: var(--spacing-md);
}

.footer-column ul li a {
    color: var(--gray-400);
    transition: color var(--transition-fast);
}

.footer-column ul li a:hover {
    color: var(--white);
}

.footer-bottom {
    text-align: center;
    padding-top: var(--spacing-lg);
    border-top: 1px solid var(--gray-700);
}

.footer-bottom p {
    color: var(--gray-500);
    margin-bottom: 0;
}

/* Responsive Styles
-------------------------------------------------------------- */
@media (max-width: 992px) {
    html {
        font-size: 15px;
    }
    
    .hero .container {
        flex-direction: column;
        text-align: center;
    }
    
    .hero-content {
        margin-bottom: var(--spacing-xxl);
    }
    
    .hero-buttons {
        justify-content: center;
    }
    
    .benefits-wrapper {
        flex-direction: column;
    }
    
    .benefits-image {
        order: -1;
        margin-bottom: var(--spacing-xl);
    }
}

@media (max-width: 768px) {
    html {
        font-size: 14px;
    }
    
    .header .container {
        padding: var(--spacing-sm) var(--spacing-lg);
    }
    
    .menu-toggle {
        display: block;
    }
    
    .nav-list {
        position: fixed;
        top: 70px;
        left: 0;
        right: 0;
        background-color: var(--white);
        flex-direction: column;
        align-items: flex-start;
        padding: var(--spacing-lg);
        box-shadow: var(--shadow-md);
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: all var(--transition-normal);
        z-index: 999;
    }
    
    .nav-list.active {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }
    
    .nav-list li {
        margin: 0 0 var(--spacing-md) 0;
        width: 100%;
    }
    
    .nav-list a {
        display: block;
        padding: var(--spacing-sm) 0;
    }
    
    .login-btn {
        display: block;
        text-align: center;
        margin-top: var(--spacing-md);
    }
    
    .features-grid {
        grid-template-columns: 1fr;
    }
    
    .feature-card {
        max-width: 500px;
        margin: 0 auto;
    }
    
    .contact-wrapper {
        flex-direction: column;
    }
    
    .contact-info {
        margin-bottom: var(--spacing-xl);
    }
}

@media (max-width: 576px) {
    .hero-buttons {
        flex-direction: column;
        gap: var(--spacing-md);
    }
    
    .hero-content h2 {
        font-size: 2rem;
    }
    
    .cta h2 {
        font-size: 1.8rem;
    }
    
    .section-header h2 {
        font-size: 1.8rem;
    }
    
    .footer-content {
        flex-direction: column;
        gap: var(--spacing-xl);
    }
    
    .footer-links {
        flex-direction: column;
        gap: var(--spacing-xl);
    }
}

/* WhatsApp Button
-------------------------------------------------------------- */
.whatsapp-button {
    position: fixed;
    bottom: 20px;
    right: 20px;
    width: 60px;
    height: 60px;
    background-color: #25D366;
    color: white;
    border-radius: 50%;
    text-align: center;
    font-size: 30px;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.3);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
    z-index: 1000;
}

.whatsapp-button:hover {
    background-color: #128C7E;
    color: white;
    transform: scale(1.1);
}