:root {
    /* Color Palette */
    --color-primary: #15803d;
    --color-primary-light: #16a34a;
    --color-primary-dark: #14532d;
    --color-accent: #84cc16;
    --color-accent-light: #a3d635;
    --color-accent-dark: #65a30d;
    
    /* Neutral Colors */
    --color-white: #ffffff;
    --color-gray-50: #f9fafb;
    --color-gray-100: #f3f4f6;
    --color-gray-200: #e5e7eb;
    --color-gray-300: #d1d5db;
    --color-gray-400: #9ca3af;
    --color-gray-500: #6b7280;
    --color-gray-600: #4b5563;
    --color-gray-700: #374151;
    --color-gray-800: #1f2937;
    --color-gray-900: #111827;
    
    /* Status Colors */
    --color-success: #10b981;
    --color-warning: #f59e0b;
    --color-error: #ef4444;
    --color-info: #3b82f6;
    
    /* Typography */
    --font-heading: 'Montserrat', sans-serif;
    --font-body: 'Open Sans', sans-serif;
    
    /* Font Sizes */
    --text-xs: 0.75rem;
    --text-sm: 0.875rem;
    --text-base: 1rem;
    --text-lg: 1.125rem;
    --text-xl: 1.25rem;
    --text-2xl: 1.5rem;
    --text-3xl: 1.875rem;
    --text-4xl: 2.25rem;
    --text-5xl: 3rem;
    
    /* Spacing */
    --space-1: 0.25rem;
    --space-2: 0.5rem;
    --space-3: 0.75rem;
    --space-4: 1rem;
    --space-5: 1.25rem;
    --space-6: 1.5rem;
    --space-8: 2rem;
    --space-10: 2.5rem;
    --space-12: 3rem;
    --space-16: 4rem;
    --space-20: 5rem;
    --space-24: 6rem;
    
    /* Border Radius */
    --radius-sm: 0.25rem;
    --radius-md: 0.375rem;
    --radius-lg: 0.5rem;
    --radius-xl: 0.75rem;
    --radius-2xl: 1rem;
    --radius-full: 9999px;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --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);
    
    /* Transitions */
    --transition-fast: 150ms ease-in-out;
    --transition-normal: 300ms ease-in-out;
    --transition-slow: 500ms ease-in-out;
    
    /* Container */
    --container-max-width: 1200px;
    --container-padding: var(--space-6);
}

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

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

body {
    font-family: var(--font-body);
    font-size: var(--text-base);
    line-height: 1.6;
    color: var(--color-gray-700);
    background-color: var(--color-white);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 600;
    line-height: 1.3;
    color: var(--color-gray-900);
    margin-bottom: var(--space-4);
}

h1 {
    font-size: var(--text-4xl);
    font-weight: 700;
}

h2 {
    font-size: var(--text-3xl);
    font-weight: 600;
}

h3 {
    font-size: var(--text-2xl);
    font-weight: 600;
}

h4 {
    font-size: var(--text-xl);
    font-weight: 500;
}

h5 {
    font-size: var(--text-lg);
    font-weight: 500;
}

h6 {
    font-size: var(--text-base);
    font-weight: 500;
}

p {
    margin-bottom: var(--space-4);
}

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

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

ul, ol {
    margin-bottom: var(--space-4);
    padding-left: var(--space-6);
}

li {
    margin-bottom: var(--space-2);
}

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

/* Header */
.header {
    background-color: var(--color-white);
    border-bottom: 1px solid var(--color-gray-200);
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: var(--shadow-sm);
}

.header__wrapper {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-4) 0;
}

/* Logo */
.logo {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: var(--text-xl);
    color: var(--color-primary);
    text-decoration: none;
}

.logo__icon {
    color: var(--color-primary);
}

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

/* Navigation */
.header__nav {
    display: none;
}

.nav-menu {
    display: flex;
    list-style: none;
    margin: 0;
    padding: 0;
    gap: var(--space-8);
}

.nav-menu__link {
    font-weight: 500;
    color: var(--color-gray-700);
    padding: var(--space-2) 0;
    transition: color var(--transition-fast);
    position: relative;
}

.nav-menu__link:hover,
.nav-menu__link--active {
    color: var(--color-primary);
}

.nav-menu__link--active::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 2px;
    background-color: var(--color-primary);
    border-radius: var(--radius-full);
}

/* Header Actions */
.header__actions {
    display: flex;
    align-items: center;
    gap: var(--space-4);
}

/* Language Selector */
.language-selector {
    position: relative;
}

.language-selector__toggle {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-2) var(--space-3);
    background-color: var(--color-gray-100);
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-md);
    font-size: var(--text-sm);
    font-weight: 500;
    color: var(--color-gray-700);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.language-selector__toggle:hover {
    background-color: var(--color-gray-200);
}

.language-selector__icon {
    color: var(--color-gray-500);
}

.language-selector__dropdown {
    position: absolute;
    top: 100%;
    right: 0;
    background-color: var(--color-white);
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    padding: var(--space-2);
    min-width: 100px;
    z-index: 200;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all var(--transition-fast);
}

.language-selector__dropdown.show {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.language-selector__option {
    display: block;
    padding: var(--space-2) var(--space-3);
    color: var(--color-gray-700);
    font-size: var(--text-sm);
    font-weight: 500;
    border-radius: var(--radius-sm);
    transition: background-color var(--transition-fast);
}

.language-selector__option:hover {
    background-color: var(--color-gray-100);
    color: var(--color-primary);
}

/* Mobile Menu Toggle */
.mobile-menu-toggle {
    display: flex;
    flex-direction: column;
    gap: var(--space-1);
    padding: var(--space-2);
    background: transparent;
    border: none;
    cursor: pointer;
}

.mobile-menu-toggle__line {
    width: 24px;
    height: 2px;
    background-color: var(--color-gray-700);
    border-radius: var(--radius-full);
    transition: all var(--transition-fast);
}

.mobile-menu-toggle.active .mobile-menu-toggle__line:nth-child(1) {
    transform: rotate(45deg) translate(6px, 6px);
}

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

.mobile-menu-toggle.active .mobile-menu-toggle__line:nth-child(3) {
    transform: rotate(-45deg) translate(6px, -6px);
}

/* Mobile Navigation */
.mobile-nav {
    display: none;
    background-color: var(--color-white);
    border-top: 1px solid var(--color-gray-200);
    padding: var(--space-4) 0;
}

.mobile-nav.show {
    display: block;
}

.mobile-nav__menu {
    list-style: none;
    margin: 0;
    padding: 0;
}

.mobile-nav__item {
    border-bottom: 1px solid var(--color-gray-100);
}

.mobile-nav__link {
    display: block;
    padding: var(--space-4);
    font-weight: 500;
    color: var(--color-gray-700);
    transition: color var(--transition-fast);
}

.mobile-nav__link:hover,
.mobile-nav__link--active {
    color: var(--color-primary);
    background-color: var(--color-gray-50);
}

/* Main Content */
.main-content {
    min-height: calc(100vh - 200px);
}

/* Hero Section */
.hero-section {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
    color: var(--color-white);
    padding: var(--space-20) 0 var(--space-16);
    text-align: center;
}

.hero__title {
    font-size: var(--text-5xl);
    font-weight: 700;
    margin-bottom: var(--space-6);
    color: var(--color-white);
}

.hero__subtitle {
    font-size: var(--text-xl);
    opacity: 0.9;
    max-width: 800px;
    margin: 0 auto;
    line-height: 1.6;
}

/* Page Header */
.page-header {
    background-color: var(--color-gray-50);
    padding: var(--space-16) 0 var(--space-12);
    text-align: center;
}

.page-header__title {
    font-size: var(--text-4xl);
    font-weight: 700;
    margin-bottom: var(--space-4);
    color: var(--color-gray-900);
}

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

/* Content Section */
.content-section {
    padding: var(--space-16) 0;
}

/* Content Grid */
.content-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-8);
}

.content-card {
    background-color: var(--color-white);
    padding: var(--space-8);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-md);
    border: 1px solid var(--color-gray-200);
    transition: all var(--transition-normal);
}

.content-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.content-card__title {
    color: var(--color-primary);
    margin-bottom: var(--space-4);
}

.content-card__text {
    margin-bottom: var(--space-6);
}

.content-card__list {
    list-style: none;
    padding: 0;
}

.content-card__list li {
    position: relative;
    padding-left: var(--space-6);
    margin-bottom: var(--space-3);
}

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

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    padding: var(--space-3) var(--space-6);
    font-family: var(--font-heading);
    font-weight: 500;
    font-size: var(--text-base);
    line-height: 1;
    text-decoration: none;
    border: 2px solid transparent;
    border-radius: var(--radius-lg);
    cursor: pointer;
    transition: all var(--transition-fast);
    white-space: nowrap;
}

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

.btn--primary:hover {
    background-color: var(--color-primary-light);
    border-color: var(--color-primary-light);
    color: var(--color-white);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn--secondary {
    background-color: transparent;
    color: var(--color-primary);
    border-color: var(--color-primary);
}

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

.btn--large {
    padding: var(--space-4) var(--space-8);
    font-size: var(--text-lg);
}

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

.footer__content {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-8);
    margin-bottom: var(--space-12);
}

.footer__section h3 {
    color: var(--color-white);
    margin-bottom: var(--space-4);
}

.footer__logo {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    margin-bottom: var(--space-4);
}

.footer__logo-icon {
    color: var(--color-accent);
}

.footer__logo-text {
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: var(--text-xl);
    color: var(--color-white);
}

.footer__description {
    color: var(--color-gray-400);
    margin-bottom: 0;
}

.footer__links {
    list-style: none;
    padding: 0;
    margin: 0;
}

.footer__links li {
    margin-bottom: var(--space-2);
}

.footer__link {
    color: var(--color-gray-400);
    transition: color var(--transition-fast);
}

.footer__link:hover {
    color: var(--color-accent);
}

.footer__bottom {
    border-top: 1px solid var(--color-gray-700);
    padding-top: var(--space-8);
}

.footer__legal {
    display: flex;
    flex-direction: column;
    gap: var(--space-4);
    align-items: center;
    text-align: center;
}

.footer__copyright {
    color: var(--color-gray-500);
    margin: 0;
}

.footer__legal-links {
    display: flex;
    gap: var(--space-6);
}

.footer__legal-link {
    color: var(--color-gray-400);
    font-size: var(--text-sm);
    transition: color var(--transition-fast);
}

.footer__legal-link:hover {
    color: var(--color-accent);
}

/* Responsive Design */
@media (min-width: 640px) {
    .content-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .footer__content {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .footer__legal {
        flex-direction: row;
        justify-content: space-between;
        text-align: left;
    }
}

@media (min-width: 768px) {
    .header__nav {
        display: block;
    }
    
    .mobile-menu-toggle {
        display: none;
    }
    
    .hero__title {
        font-size: var(--text-5xl);
    }
    
    .content-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .footer__content {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (min-width: 1024px) {
    :root {
        --container-padding: var(--space-8);
    }
    
    .hero__title {
        font-size: 4rem;
    }
}

/* Accessibility */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* Focus States */
.btn:focus,
.form-input:focus,
.form-select:focus,
.form-textarea:focus {
    outline: 2px solid var(--color-accent);
    outline-offset: 2px;
}

/* High Contrast Mode */
@media (prefers-contrast: high) {
    :root {
        --color-primary: #000000;
        --color-accent: #ffffff;
        --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.3);
        --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.3);
    }
}