/* Base Styles & Reset */
:root {
    --color-primary: #4CAF50;
    --color-secondary: #2196F3;
    --color-accent: #FF5722;
    --color-dark: #333333;
    --color-light: #f8f8f8;
    --color-gray: #757575;
    --font-main: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    --gradient-primary: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
    --shadow-soft: 0 6px 12px rgba(0, 0, 0, 0.1);
    --shadow-medium: 0 8px 24px rgba(0, 0, 0, 0.15);
    --border-radius-sm: 4px;
    --border-radius-md: 8px;
    --border-radius-lg: 16px;
    --transition-normal: all 0.3s ease;
}

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

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

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

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

.page-wrapper {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    margin-bottom: 0.5em;
    font-weight: 600;
    line-height: 1.3;
}

h1 {
    font-size: 2.5rem;
}

h2 {
    font-size: 2rem;
}

h3 {
    font-size: 1.5rem;
}

p {
    margin-bottom: 1.5rem;
}

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

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

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 12px 24px;
    border-radius: var(--border-radius-md);
    font-weight: 600;
    transition: var(--transition-normal);
    cursor: pointer;
    border: none;
    text-align: center;
    min-width: 160px;
}

.btn.primary {
    background: var(--gradient-primary);
    color: white;
    box-shadow: var(--shadow-soft);
}

.btn.secondary {
    background: rgba(255, 255, 255, 0.2);
    border: 2px solid var(--color-secondary);
    color: var(--color-secondary);
}

.btn.large {
    padding: 14px 32px;
    font-size: 1.1rem;
}

.btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-medium);
}

.btn.primary:hover {
    filter: brightness(1.1);
    color: white;
}

.action-buttons {
    display: flex;
    gap: 15px;
    margin: 1.5rem 0;
    flex-wrap: wrap;
}

/* Header & Navigation */
.site-header {
    position: sticky;
    top: 0;
    background-color: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    z-index: 1000;
    padding: 15px 0;
}

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

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
}

.site-title {
    font-size: 1.3rem;
    font-weight: 700;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}

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

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.nav-menu a {
    color: var(--color-dark);
    font-weight: 600;
    position: relative;
}

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

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

.nav-menu a:hover::after {
    width: 100%;
}

.nav-cta {
    background: var(--gradient-primary);
    color: white !important;
    padding: 10px 20px;
    border-radius: var(--border-radius-md);
}

.nav-cta:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-soft);
}

.menu-toggle {
    display: none;
    cursor: pointer;
    width: 30px;
    height: 25px;
    position: relative;
}

.hamburger, .hamburger::before, .hamburger::after {
    position: absolute;
    width: 30px;
    height: 3px;
    background: var(--color-dark);
    transition: var(--transition-normal);
}

.hamburger {
    top: 50%;
    transform: translateY(-50%);
}

.hamburger::before, .hamburger::after {
    content: '';
    left: 0;
}

.hamburger::before {
    top: -8px;
}

.hamburger::after {
    bottom: -8px;
}

.menu-toggle.active .hamburger {
    background: transparent;
}

.menu-toggle.active .hamburger::before {
    transform: rotate(45deg);
    top: 0;
}

.menu-toggle.active .hamburger::after {
    transform: rotate(-45deg);
    bottom: 0;
}

/* Hero Section */
.hero {
    padding: 80px 0 60px;
    background-color: rgba(76, 175, 80, 0.05);
    position: relative;
    overflow: hidden;
}

.hero .container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    align-items: center;
}

.hero-content h1 {
    margin-bottom: 1rem;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}

.hero-subtitle {
    font-size: 1.2rem;
    color: var(--color-gray);
    margin-bottom: 2rem;
}

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

.hero-image {
    max-width: 100%;
    height: auto;
}

/* Features Section */
.features {
    padding: 80px 0;
    background-color: white;
}

.section-header {
    text-align: center;
    max-width: 700px;
    margin: 0 auto 50px;
}

.section-header h2 {
    margin-bottom: 1rem;
    position: relative;
    display: inline-block;
}

.section-header h2::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 4px;
    background: var(--gradient-primary);
    border-radius: 2px;
}

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

.feature-card {
    background-color: white;
    padding: 30px;
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-soft);
    transition: var(--transition-normal);
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-medium);
}

.feature-icon {
    margin-bottom: 1.5rem;
}

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

.feature-card p {
    color: var(--color-gray);
}

/* How To Use Section */
.how-to {
    padding: 80px 0;
    background-color: rgba(33, 150, 243, 0.05);
}

.steps-container {
    display: flex;
    flex-direction: column;
    max-width: 800px;
    margin: 0 auto;
    gap: 30px;
}

.step {
    display: flex;
    gap: 20px;
    align-items: flex-start;
}

.step-number {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 50px;
    height: 50px;
    background: var(--gradient-primary);
    color: white;
    font-size: 1.5rem;
    font-weight: bold;
    border-radius: 50%;
    flex-shrink: 0;
}

.step-content {
    flex-grow: 1;
}

.step-content h3 {
    margin-bottom: 0.5rem;
    color: var(--color-dark);
}

.step-content p {
    color: var(--color-gray);
}

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

/* FAQ Section */
.faq {
    padding: 80px 0;
    background-color: white;
}

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

.accordion-item {
    margin-bottom: 15px;
    border-radius: var(--border-radius-md);
    overflow: hidden;
    box-shadow: var(--shadow-soft);
    background-color: white;
}

.accordion-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px;
    cursor: pointer;
    background-color: white;
    transition: var(--transition-normal);
}

.accordion-header h3 {
    font-size: 1.1rem;
    margin: 0;
}

.accordion-icon {
    font-size: 1.5rem;
    color: var(--color-primary);
}

.accordion-content {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
    padding: 0 20px;
}

.accordion-item.active .accordion-content {
    max-height: 300px;
    padding-bottom: 20px;
}

.accordion-item:hover {
    box-shadow: var(--shadow-medium);
}

/* Footer */
.site-footer {
    background-color: var(--color-dark);
    color: white;
    padding: 60px 0 20px;
}

.footer-content {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 40px;
    margin-bottom: 40px;
}

.footer-logo {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.footer-brand h3 {
    font-size: 1.3rem;
    margin-bottom: 0.3rem;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}

.footer-brand p {
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: 0;
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 20px;
}

.footer-column h4 {
    margin-bottom: 1.2rem;
    color: white;
    position: relative;
    display: inline-block;
}

.footer-column h4::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 40px;
    height: 3px;
    background: var(--gradient-primary);
}

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

.footer-column ul li {
    margin-bottom: 0.8rem;
}

.footer-column a {
    color: rgba(255, 255, 255, 0.7);
    transition: var(--transition-normal);
}

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

.keyword-list li {
    color: rgba(255, 255, 255, 0.6);
    font-size: 0.9rem;
}

.footer-bottom {
    text-align: center;
    padding-top: 20px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    font-size: 0.9rem;
    color: rgba(255, 255, 255, 0.6);
}

/* Media Queries */
@media (max-width: 992px) {
    .hero .container {
        grid-template-columns: 1fr;
    }
    
    .hero-graphic {
        margin-top: 40px;
        order: 2;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    html {
        font-size: 14px;
    }
    
    .menu-toggle {
        display: block;
        z-index: 2000;
    }
    
    .nav-menu {
        position: fixed;
        top: 0;
        right: -100%;
        flex-direction: column;
        background-color: white;
        width: 80%;
        height: 100vh;
        padding: 80px 30px 30px;
        transition: var(--transition-normal);
        box-shadow: -5px 0 15px rgba(0, 0, 0, 0.1);
        gap: 1.5rem;
        z-index: 1500;
    }
    
    .nav-menu.active {
        right: 0;
    }
    
    .features-grid {
        grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    }
}

@media (max-width: 576px) {
    .btn {
        padding: 10px 20px;
        min-width: 140px;
    }
    
    .action-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .action-buttons .btn {
        width: 100%;
    }
    
    .step {
        flex-direction: column;
    }
    
    .step-number {
        margin-bottom: 10px;
    }
}