/* Import modern fonts */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&display=swap');

/* Mobile-First Base Styles */
:root {
    --primary-color: #1DA1F2;
    --secondary-color: #14171A;
    --accent-color: #657786;
    --background-light: #F5F8FA;
    --text-color: #14171A;
    --white: #ffffff;
    --nav-height: 60px;
    --hamburger-size: 24px;
}

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

body {
    font-family: 'Inter', sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background-color: var(--background-light);
    overflow-x: hidden;
}

/* Mobile Navigation */
.header {
    background-color: var(--white);
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
    height: var(--nav-height);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 100%;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    z-index: 1001;
}

.logo img {
    height: 40px;
    border-radius: 10px;
}

.hamburger {
    display: block;
    width: var(--hamburger-size);
    height: var(--hamburger-size);
    position: relative;
    cursor: pointer;
    z-index: 1001;
    background: none;
    border: none;
    padding: 0;
}

.hamburger span {
    display: block;
    width: 100%;
    height: 2px;
    background-color: var(--text-color);
    position: absolute;
    transition: all 0.3s ease;
}

.hamburger span:nth-child(1) { top: 0; }
.hamburger span:nth-child(2) { top: 50%; transform: translateY(-50%); }
.hamburger span:nth-child(3) { bottom: 0; }

.hamburger.active span:nth-child(1) {
    transform: rotate(45deg);
    top: 50%;
}

.hamburger.active span:nth-child(2) {
    opacity: 0;
}

.hamburger.active span:nth-child(3) {
    transform: rotate(-45deg);
    bottom: 50%;
}

.nav-links {
    position: fixed;
    top: 0;
    right: -100%;
    width: 100%;
    height: 100vh;
    background-color: var(--white);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    transition: right 0.3s ease;
    padding: 2rem;
}

.nav-links.active {
    right: 0;
}

.nav-links a {
    text-decoration: none;
    color: var(--text-color);
    font-weight: 500;
    padding: 1rem;
    margin: 0.5rem 0;
    border-radius: 25px;
    min-width: 200px;
    text-align: center;
    transition: all 0.3s ease;
}

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

/* Hero Section */
.hero {
    padding: 8rem 2rem 4rem;
    background: linear-gradient(135deg, var(--primary-color) 0%, #1991db 100%);
    color: var(--white);
    text-align: center;
    position: relative;
    overflow: hidden;
}

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

.hero h1 {
    font-size: 3.5rem;
    margin-bottom: 1.5rem;
    line-height: 1.2;
}

.hero p {
    font-size: 1.25rem;
    margin-bottom: 2rem;
    opacity: 0.9;
}

.hero-image {
    width: 100%;
    max-width: 800px;
    margin: 2rem auto;
    border-radius: 20px;
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.2);
}

/* Features Section */
.features {
    padding: 4rem 2rem;
    background-color: var(--white);
}

.features-grid {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.feature-card {
    padding: 2rem;
    border-radius: 20px;
    background-color: var(--background-light);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 12px rgba(0, 0, 0, 0.15);
}

.feature-card h3 {
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.feature-image {
    width: 100%;
    height: 200px;
    object-fit: cover;
    border-radius: 15px;
    margin-bottom: 1.5rem;
}

/* Benefits Section */
.benefits {
    padding: 4rem 2rem;
    background-color: var(--background-light);
    border-radius: 30px;
    margin: 2rem 0;
}

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

.section-title {
    text-align: center;
    margin-bottom: 3rem;
}

.section-title h2 {
    font-size: 2.5rem;
    color: var(--secondary-color);
    margin-bottom: 1rem;
}

/* Testimonials Section */
.testimonials {
    padding: 4rem 2rem;
    background-color: var(--white);
}

.testimonials-grid {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
    padding: 2rem 0;
}

.testimonial-card {
    background: var(--background-light);
    border-radius: 25px;
    padding: 2rem;
    box-shadow: 0 8px 16px rgba(29, 161, 242, 0.15);
    transition: transform 0.3s ease;
}

.testimonial-card:hover {
    transform: translateY(-10px);
}

.testimonial-stats {
    display: flex;
    justify-content: space-around;
    margin-bottom: 1.5rem;
    padding: 1rem;
    background: linear-gradient(135deg, var(--primary-color) 0%, #1991db 100%);
    border-radius: 15px;
    color: var(--white);
}

.stat {
    text-align: center;
}

.stat-number {
    display: block;
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.stat-label {
    font-size: 0.9rem;
    opacity: 0.9;
}

.testimonial-text {
    font-size: 1.1rem;
    line-height: 1.6;
    margin: 1.5rem 0;
    font-style: italic;
    color: var(--text-color);
}

.testimonial-author {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-top: 1.5rem;
}

.author-image {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    object-fit: cover;
}

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

.author-info p {
    margin: 0;
    font-size: 0.9rem;
    opacity: 0.8;
}

/* Mobile App Mockup Section */
.app-mockup {
    padding: 4rem 1rem;
    background: linear-gradient(135deg, var(--primary-color) 0%, #1991db 100%);
    color: var(--white);
    text-align: center;
}

.mockup-container {
    position: relative;
    max-width: 350px;
    margin: 2rem auto;
}

.phone-frame {
    width: 100%;
    border-radius: 40px;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
    position: relative;
}

.app-features {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1.5rem;
    margin-top: 2rem;
    padding: 0 1rem;
}

.app-feature {
    background: rgba(255, 255, 255, 0.1);
    padding: 1.5rem;
    border-radius: 20px;
    backdrop-filter: blur(10px);
    transition: transform 0.3s ease;
}

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

.highlight-box {
    background: linear-gradient(135deg, var(--primary-color) 0%, #1991db 100%);
    color: white;
    padding: 2rem;
    border-radius: 20px;
    margin: 2rem 0;
    text-align: center;
}

.highlight-box h2 {
    color: #14171A;
    margin-bottom: 1rem;
    font-weight: 600;
}

/* Contact Form Styles */
.contact-form {
    max-width: 600px;
    margin: 0 auto;
    padding: 20px;
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 5px;
    font-weight: bold;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 8px;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-size: 16px;
}

.form-group textarea {
    resize: vertical;
}

.submit-btn {
    background-color: #1da1f2;
    color: white;
    padding: 10px 20px;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-size: 16px;
}

.submit-btn:hover {
    background-color: #1991db;
}

/* Touch-Optimized Elements */
button, 
.cta-button,
.feature-card,
.nav-links a {
    min-height: 44px;
    min-width: 44px;
    padding: 12px 20px;
    margin: 8px;
    touch-action: manipulation;
}

.cta-button {
    display: inline-block;
    padding: 15px 30px;
    background-color: #1da1f2;
    color: white;
    text-decoration: none;
    border-radius: 5px;
    margin-top: 20px;
    transition: background-color 0.3s ease;
    font-weight: bold;
    text-transform: uppercase;
}

/* Larger Screens */
@media (min-width: 768px) {
    .hamburger {
        display: none;
    }

    .nav-links {
        position: static;
        height: auto;
        flex-direction: row;
        background: none;
        padding: 0;
        width: auto;
    }

    .nav-links a {
        margin: 0 0.5rem;
        min-width: auto;
    }

    .app-features {
        grid-template-columns: repeat(3, 1fr);
    }
}

/* Footer */
.footer {
    background-color: var(--secondary-color);
    color: var(--white);
    padding: 3rem 2rem;
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.footer-links a {
    color: white;
    text-decoration: none;
    margin: 0 15px;
    transition: opacity 0.3s ease;
}

.footer-links a:hover {
    opacity: 0.8;
}

footer a {
    color: white;
    text-decoration: none;
    transition: opacity 0.3s ease;
}

footer a:hover {
    opacity: 0.8;
}

.social-links {
    margin-top: 15px;
}

.social-links a {
    color: white;
    font-size: 16px;
    margin: 0 10px;
    transition: opacity 0.3s ease;
    display: inline-flex;
    align-items: center;
}

.social-links a:hover {
    opacity: 0.8;
}

.social-links i {
    vertical-align: middle;
    margin-left: 5px;
    font-size: 20px;
}

/* Responsive Design */
@media (max-width: 768px) {
    .hero h1 {
        font-size: 2.5rem;
    }
}