/* Base Styles & Variables */
:root {
    --primary-color: #3498DB;
    --secondary-color: #9B59B6;
    --accent-color: #27AE60;
    --warning-color: #E74C3C;
    --dark-color: #2C3E50;
    --text-color: #2C3E50;
    --light-text: #FFFFFF;
    --background-color: #F9FAFC;
    --light-bg: #ECF0F1;
    --dark-bg: #34495E;
    --card-bg: #FFFFFF;
    --border-radius: 8px;
    --box-shadow: 0 10px 20px rgba(0, 0, 0, 0.08);
    --transition: all 0.3s ease;
    --gradient: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Poppins', 'Montserrat', sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background-color: var(--background-color);
    overflow-x: hidden;
    font-size: 16px;
}

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 1rem;
}

h1 {
    font-size: 3.2rem;
    margin-bottom: 1.5rem;
    background: var(--gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-fill-color: transparent;
}

h2 {
    font-size: 2.8rem;
    margin-bottom: 0.5rem;
}

h3 {
    font-size: 1.5rem;
    margin-bottom: 0.8rem;
}

p {
    margin-bottom: 1rem;
    font-size: 1.05rem;
}

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

a:hover {
    color: var(--secondary-color);
}

/* Button Styles */
.btn {
    display: inline-block;
    padding: 14px 32px;
    border-radius: 50px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    text-align: center;
    text-transform: uppercase;
    letter-spacing: 1px;
    font-size: 0.9rem;
}

.btn.primary {
    background: var(--gradient);
    color: var(--light-text);
    box-shadow: 0 4px 15px rgba(52, 152, 219, 0.3);
    border: none;
}

.btn.primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(52, 152, 219, 0.4);
}

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

.btn.outline:hover {
    background: var(--primary-color);
    color: var(--light-text);
}

/* Header Styles */
header {
    background-color: var(--card-bg);
    box-shadow: 0 2px 15px rgba(0, 0, 0, 0.05);
    position: sticky;
    top: 0;
    z-index: 1000;
    padding: 20px 0;
}

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

.logo-container {
    display: flex;
    align-items: center;
    gap: 15px;
}

.logo-text {
    font-weight: 700;
    font-size: 1.5rem;
    color: var(--dark-color);
    transition: var(--transition);
}

.logo-container:hover .logo-text {
    color: var(--primary-color);
}

.main-nav ul {
    display: flex;
    list-style: none;
    gap: 35px;
}

.main-nav ul li a {
    color: var(--text-color);
    font-weight: 500;
    position: relative;
    padding: 5px 0;
}

.main-nav ul li a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient);
    transition: var(--transition);
}

.main-nav ul li a:hover::after {
    width: 100%;
}

.menu-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    width: 35px;
    height: 25px;
    position: relative;
}

.menu-toggle span {
    display: block;
    position: absolute;
    height: 3px;
    width: 100%;
    background: var(--dark-color);
    border-radius: 3px;
    left: 0;
    transition: var(--transition);
}

.menu-toggle span:nth-child(1) {
    top: 0;
}

.menu-toggle span:nth-child(2) {
    top: 10px;
}

.menu-toggle span:nth-child(3) {
    top: 20px;
}

.menu-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(7px, 7px);
}

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

.menu-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(7px, -7px);
}

/* Hero Section */
.hero {
    padding: 100px 0;
    background: linear-gradient(135deg, rgba(52, 152, 219, 0.05), rgba(155, 89, 182, 0.05));
    position: relative;
    overflow: hidden;
}

.hero .container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
    align-items: center;
}

.hero-text {
    max-width: 600px;
}

.hero-text p {
    font-size: 1.2rem;
    color: var(--dark-color);
    margin-bottom: 2rem;
    opacity: 0.9;
}

.hero-buttons {
    display: flex;
    gap: 20px;
}

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

.visual-container {
    position: relative;
    width: 100%;
    height: 100%;
}

.hero-svg {
    width: 100%;
    height: auto;
    max-width: 500px;
}

/* Section Headers */
.section-header {
    text-align: center;
    margin-bottom: 50px;
}

.subtitle {
    font-size: 1.2rem;
    color: var(--dark-color);
    opacity: 0.7;
    max-width: 600px;
    margin: 0 auto;
}

/* About Section */
.about {
    padding: 100px 0;
    background-color: var(--card-bg);
}

.about-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
}

.about-card {
    background: var(--light-bg);
    border-radius: var(--border-radius);
    padding: 30px;
    text-align: center;
    box-shadow: var(--box-shadow);
    transition: var(--transition);
}

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

.about-icon {
    margin-bottom: 20px;
}

.about-card h3 {
    margin-bottom: 15px;
    color: var(--dark-color);
}

.about-card p {
    color: var(--dark-color);
    opacity: 0.8;
}

/* Features Section */
.features {
    padding: 100px 0;
    background-color: var(--background-color);
}

.features-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
    align-items: center;
}

.features-text {
    display: flex;
    flex-direction: column;
    gap: 30px;
}

.feature-item h3 {
    color: var(--dark-color);
    margin-bottom: 10px;
    display: flex;
    align-items: center;
}

.feature-item h3::before {
    content: '';
    display: inline-block;
    width: 10px;
    height: 10px;
    background: var(--gradient);
    margin-right: 15px;
    border-radius: 50%;
}

.feature-item p {
    padding-left: 25px;
    color: var(--text-color);
    opacity: 0.8;
}

.features-visual {
    display: flex;
    justify-content: center;
    align-items: center;
}

.features-svg {
    width: 100%;
    height: auto;
    max-width: 500px;
}

/* How To Section */
.how-to {
    padding: 100px 0;
    background-color: var(--light-bg);
}

.steps-container {
    max-width: 800px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 40px;
}

.step {
    display: flex;
    gap: 30px;
    align-items: flex-start;
}

.step-icon {
    background: var(--gradient);
    width: 50px;
    height: 50px;
    min-width: 50px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 5px 15px rgba(52, 152, 219, 0.3);
}

.step-icon span {
    color: var(--light-text);
    font-weight: 700;
    font-size: 1.2rem;
}

.step-content h3 {
    margin-bottom: 10px;
}

.cta-center {
    text-align: center;
    margin-top: 50px;
}

/* FAQ Section */
.faq-section {
    padding: 100px 0;
    background-color: var(--card-bg);
}

.faq-container {
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    border-bottom: 1px solid rgba(0, 0, 0, 0.1);
    margin-bottom: 20px;
}

.faq-question {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 0;
    cursor: pointer;
}

.faq-question h3 {
    margin-bottom: 0;
    font-size: 1.2rem;
}

.toggle-icon {
    font-size: 1.5rem;
    color: var(--primary-color);
    font-weight: 700;
    transition: var(--transition);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: var(--transition);
    padding: 0 0 0 0;
}

.faq-item.active .faq-answer {
    max-height: 500px;
    padding: 0 0 20px 0;
}

.faq-item.active .toggle-icon {
    transform: rotate(45deg);
}

/* Footer */
footer {
    background-color: var(--dark-bg);
    color: var(--light-text);
    padding: 70px 0 30px;
}

.footer-top {
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 40px;
    margin-bottom: 50px;
}

.footer-brand {
    display: flex;
    align-items: center;
    gap: 20px;
}

.brand-text h3 {
    margin-bottom: 5px;
    color: var(--light-text);
}

.brand-text p {
    opacity: 0.7;
    font-size: 0.9rem;
}

.footer-links {
    display: flex;
    gap: 60px;
}

.footer-column h4 {
    color: var(--primary-color);
    margin-bottom: 20px;
    font-size: 1.1rem;
}

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

.footer-column ul li {
    margin-bottom: 12px;
}

.footer-column ul li a {
    color: var(--light-text);
    opacity: 0.7;
    transition: var(--transition);
}

.footer-column ul li a:hover {
    opacity: 1;
    color: var(--primary-color);
}

.keyword-list li {
    opacity: 0.7;
}

.footer-bottom {
    text-align: center;
    padding-top: 30px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    font-size: 0.9rem;
    opacity: 0.7;
}

/* Responsive Styles */
@media screen and (max-width: 992px) {
    h1 {
        font-size: 2.5rem;
    }
    
    h2 {
        font-size: 2.2rem;
    }
    
    .hero .container,
    .features-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .hero-text {
        max-width: 100%;
        text-align: center;
    }
    
    .hero-buttons {
        justify-content: center;
    }
    
    .features-text {
        order: 2;
    }
    
    .features-visual {
        order: 1;
    }
    
    .footer-top {
        flex-direction: column;
    }
}

@media screen and (max-width: 768px) {
    .menu-toggle {
        display: block;
    }
    
    .main-nav ul {
        position: fixed;
        top: 80px;
        left: 0;
        width: 100%;
        background: var(--card-bg);
        flex-direction: column;
        gap: 0;
        max-height: 0;
        overflow: hidden;
        transition: var(--transition);
        box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
        z-index: 1000;
    }
    
    .main-nav ul.active {
        max-height: 300px;
    }
    
    .main-nav ul li {
        padding: 15px 20px;
        border-bottom: 1px solid rgba(0, 0, 0, 0.05);
    }
    
    .main-nav ul li a {
        display: block;
        width: 100%;
    }
    
    .main-nav ul li a::after {
        display: none;
    }
    
    .about-grid {
        grid-template-columns: 1fr;
        max-width: 400px;
        margin: 0 auto;
    }
    
    .footer-links {
        flex-direction: column;
        gap: 30px;
    }
}

@media screen and (max-width: 576px) {
    h1 {
        font-size: 2rem;
    }
    
    h2 {
        font-size: 1.8rem;
    }
    
    .hero {
        padding: 60px 0;
    }
    
    .hero-buttons {
        flex-direction: column;
    }
    
    .section-header {
        margin-bottom: 30px;
    }
    
    .about,
    .features,
    .how-to,
    .faq-section {
        padding: 60px 0;
    }
    
    .step {
        flex-direction: column;
        text-align: center;
    }
    
    .step-icon {
        margin: 0 auto 15px;
    }
    
    .footer-brand {
        flex-direction: column;
        text-align: center;
    }
}