/* CSS Variables - Design System */
:root {
    /* Colors - Botanical Minimalism */
    --color-primary: #2d5f3f;
    --color-primary-light: #3a7b51;
    --color-primary-dark: #1e4029;
    --color-secondary: #8fbc6f;
    --color-accent: #c9a86a;
    --color-accent-light: #e0c285;
    
    /* Neutrals */
    --color-bg: #fdfdfb;
    --color-bg-alt: #f5f4f0;
    --color-bg-paper: #faf9f5;
    --color-surface: #ffffff;
    --color-text: #2a2a2a;
    --color-text-light: #5a5a5a;
    --color-text-muted: #8a8a8a;
    --color-border: #e0dfd8;
    --color-border-light: #efeee8;
    
    /* Status colors */
    --color-success: #4caf50;
    --color-error: #d84343;
    --color-warning: #ff9800;
    
    /* Typography */
    --font-primary: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen', 'Ubuntu', 'Cantarell', sans-serif;
    --font-display: 'Georgia', 'Times New Roman', serif;
    
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 2rem;
    --font-size-4xl: 2.5rem;
    
    --font-weight-normal: 400;
    --font-weight-medium: 500;
    --font-weight-semibold: 600;
    --font-weight-bold: 700;
    
    --line-height-tight: 1.2;
    --line-height-normal: 1.5;
    --line-height-relaxed: 1.75;
    
    /* Spacing */
    --space-xs: 0.25rem;
    --space-sm: 0.5rem;
    --space-md: 1rem;
    --space-lg: 1.5rem;
    --space-xl: 2rem;
    --space-2xl: 3rem;
    --space-3xl: 4rem;
    --space-4xl: 6rem;
    
    /* Border Radius */
    --radius-sm: 0.25rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-2xl: 1.5rem;
    --radius-full: 9999px;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.07);
    --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px rgba(0, 0, 0, 0.15);
    
    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 250ms ease;
    --transition-slow: 350ms ease;
    
    /* Layout */
    --container-max-width: 1200px;
    --container-padding: 1.5rem;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-primary);
    font-size: var(--font-size-base);
    line-height: var(--line-height-normal);
    color: var(--color-text);
    background: var(--color-bg);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-display);
    font-weight: var(--font-weight-semibold);
    line-height: var(--line-height-tight);
    color: var(--color-text);
}

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

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

a:focus-visible {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
    border-radius: var(--radius-sm);
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

button {
    font-family: inherit;
    cursor: pointer;
    border: none;
    background: none;
}

input, textarea, select {
    font-family: inherit;
    font-size: inherit;
}

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

/* Header */
.site-header {
    background: var(--color-surface);
    border-bottom: 1px solid var(--color-border-light);
    padding: var(--space-lg) 0;
    position: sticky;
    top: 0;
    z-index: 100;
    backdrop-filter: blur(10px);
    background: rgba(255, 255, 255, 0.95);
}

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

.logo {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-semibold);
    color: var(--color-primary);
}

.logo-icon {
    color: var(--color-secondary);
}

.header-nav {
    display: flex;
    gap: var(--space-lg);
}

.header-nav a {
    font-weight: var(--font-weight-medium);
    color: var(--color-text-light);
    transition: color var(--transition-base);
}

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

/* Hero Section */
.hero {
    position: relative;
    padding: var(--space-3xl) 0 var(--space-2xl);
    background: linear-gradient(135deg, var(--color-bg-paper) 0%, var(--color-bg-alt) 100%);
    overflow: hidden;
}

.hero-decoration {
    position: absolute;
    top: 0;
    right: 0;
    width: 400px;
    height: 400px;
    opacity: 0.3;
    pointer-events: none;
    color: var(--color-secondary);
}

.leaf-pattern {
    width: 100%;
    height: 100%;
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: 700px;
}

.hero-badge {
    display: inline-block;
    background: var(--color-secondary);
    color: white;
    padding: var(--space-sm) var(--space-lg);
    border-radius: var(--radius-full);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: var(--space-lg);
}

.hero-title {
    font-size: var(--font-size-4xl);
    margin-bottom: var(--space-lg);
    color: var(--color-primary-dark);
}

.hero-subtitle {
    font-size: var(--font-size-lg);
    color: var(--color-text-light);
    line-height: var(--line-height-relaxed);
    margin-bottom: var(--space-2xl);
}

.hero-features {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-lg);
}

.feature-item {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    font-size: var(--font-size-sm);
    color: var(--color-text-light);
}

.feature-item svg {
    color: var(--color-secondary);
    flex-shrink: 0;
}

/* Quiz Section */
.quiz-section {
    padding: var(--space-4xl) 0;
    background: var(--color-bg);
}

/* Progress Bar */
.progress-container {
    margin-bottom: var(--space-2xl);
}

.progress-info {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--space-md);
}

.progress-text {
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    color: var(--color-text-light);
}

.progress-percentage {
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-semibold);
    color: var(--color-primary);
}

.progress-bar {
    height: 8px;
    background: var(--color-border-light);
    border-radius: var(--radius-full);
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--color-secondary) 0%, var(--color-primary) 100%);
    border-radius: var(--radius-full);
    transition: width var(--transition-slow);
}

/* Quiz Container */
.quiz-container {
    max-width: 800px;
    margin: 0 auto;
}

.question-card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    padding: var(--space-2xl);
    box-shadow: var(--shadow-sm);
    animation: slideIn 0.4s ease;
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.question-title {
    font-size: var(--font-size-2xl);
    color: var(--color-primary-dark);
    margin-bottom: var(--space-xl);
    text-align: center;
}

.answers-grid {
    display: grid;
    gap: var(--space-md);
}

.answer-option {
    width: 100%;
    background: var(--color-bg-paper);
    border: 2px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
    text-align: left;
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-medium);
    color: var(--color-text);
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
}

.answer-option::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
    background: var(--color-secondary);
    transform: scaleY(0);
    transition: transform var(--transition-base);
}

.answer-option:hover {
    border-color: var(--color-secondary);
    background: var(--color-surface);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.answer-option:hover::before {
    transform: scaleY(1);
}

.answer-option:focus-visible {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}

.answer-option.selected {
    background: var(--color-primary);
    border-color: var(--color-primary);
    color: white;
}

.answer-option.selected::before {
    background: var(--color-accent);
    transform: scaleY(1);
}

.answer-option:active {
    transform: translateY(0);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    padding: var(--space-md) var(--space-xl);
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-semibold);
    border-radius: var(--radius-lg);
    transition: all var(--transition-base);
    cursor: pointer;
    border: none;
}

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

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

.btn-primary:active {
    transform: translateY(0);
}

.btn-primary:disabled {
    background: var(--color-border);
    color: var(--color-text-muted);
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
}

.btn-large {
    padding: var(--space-lg) var(--space-2xl);
    font-size: var(--font-size-lg);
    width: 100%;
}

/* Contact Form */
.contact-form-container {
    max-width: 600px;
    margin: 0 auto;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    padding: var(--space-2xl);
    box-shadow: var(--shadow-md);
    animation: slideIn 0.4s ease;
}

.form-header {
    text-align: center;
    margin-bottom: var(--space-2xl);
}

.form-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, var(--color-secondary) 0%, var(--color-primary) 100%);
    color: white;
    border-radius: var(--radius-full);
    margin-bottom: var(--space-lg);
}

.form-title {
    font-size: var(--font-size-3xl);
    color: var(--color-primary-dark);
    margin-bottom: var(--space-md);
}

.form-description {
    font-size: var(--font-size-base);
    color: var(--color-text-light);
    line-height: var(--line-height-relaxed);
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: var(--space-lg);
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.form-label {
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    color: var(--color-text);
}

.required {
    color: var(--color-error);
}

.optional {
    color: var(--color-text-muted);
    font-weight: var(--font-weight-normal);
}

.form-input {
    padding: var(--space-md);
    border: 2px solid var(--color-border);
    border-radius: var(--radius-md);
    font-size: var(--font-size-base);
    transition: all var(--transition-base);
    background: var(--color-bg-paper);
}

.form-input:hover {
    border-color: var(--color-border-light);
}

.form-input:focus {
    outline: none;
    border-color: var(--color-primary);
    background: var(--color-surface);
    box-shadow: 0 0 0 3px rgba(45, 95, 63, 0.1);
}

.form-input.error {
    border-color: var(--color-error);
}

.form-error {
    font-size: var(--font-size-sm);
    color: var(--color-error);
    min-height: 1.25rem;
}

.checkbox-group {
    margin-top: var(--space-sm);
}

.checkbox-label {
    display: flex;
    align-items: flex-start;
    gap: var(--space-md);
    cursor: pointer;
    position: relative;
}

.checkbox-label input[type="checkbox"] {
    position: absolute;
    opacity: 0;
    width: 0;
    height: 0;
}

.checkbox-custom {
    flex-shrink: 0;
    width: 20px;
    height: 20px;
    border: 2px solid var(--color-border);
    border-radius: var(--radius-sm);
    background: var(--color-bg-paper);
    transition: all var(--transition-base);
    position: relative;
}

.checkbox-custom::after {
    content: '';
    position: absolute;
    top: 2px;
    left: 6px;
    width: 5px;
    height: 10px;
    border: solid white;
    border-width: 0 2px 2px 0;
    transform: rotate(45deg) scale(0);
    transition: transform var(--transition-base);
}

.checkbox-label:hover .checkbox-custom {
    border-color: var(--color-primary);
}

.checkbox-label input[type="checkbox"]:checked + .checkbox-custom {
    background: var(--color-primary);
    border-color: var(--color-primary);
}

.checkbox-label input[type="checkbox"]:checked + .checkbox-custom::after {
    transform: rotate(45deg) scale(1);
}

.checkbox-label input[type="checkbox"]:focus-visible + .checkbox-custom {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}

.checkbox-text {
    font-size: var(--font-size-sm);
    color: var(--color-text-light);
    line-height: var(--line-height-normal);
}

.checkbox-text a {
    color: var(--color-primary);
    text-decoration: underline;
}

/* Thank You Message */
.thank-you-container {
    max-width: 600px;
    margin: 0 auto;
    text-align: center;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    padding: var(--space-3xl) var(--space-2xl);
    box-shadow: var(--shadow-md);
    animation: slideIn 0.4s ease;
}

.thank-you-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 100px;
    height: 100px;
    background: linear-gradient(135deg, var(--color-success) 0%, #2d8f31 100%);
    color: white;
    border-radius: var(--radius-full);
    margin-bottom: var(--space-xl);
}

.thank-you-title {
    font-size: var(--font-size-3xl);
    color: var(--color-primary-dark);
    margin-bottom: var(--space-lg);
}

.thank-you-message {
    font-size: var(--font-size-lg);
    color: var(--color-text-light);
    line-height: var(--line-height-relaxed);
    margin-bottom: var(--space-md);
}

.thank-you-submessage {
    font-size: var(--font-size-base);
    color: var(--color-text-muted);
    margin-bottom: var(--space-2xl);
}

.thank-you-info {
    display: flex;
    align-items: flex-start;
    gap: var(--space-md);
    padding: var(--space-lg);
    background: var(--color-bg-alt);
    border-radius: var(--radius-lg);
    text-align: left;
    font-size: var(--font-size-sm);
    color: var(--color-text-light);
    line-height: var(--line-height-relaxed);
}

.thank-you-info svg {
    flex-shrink: 0;
    color: var(--color-secondary);
}

/* Contact Section */
.contact-section {
    padding: var(--space-4xl) 0;
    background: var(--color-bg-alt);
}

.section-title {
    font-size: var(--font-size-3xl);
    color: var(--color-primary-dark);
    text-align: center;
    margin-bottom: var(--space-2xl);
}

.contact-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--space-xl);
    max-width: 1000px;
    margin: 0 auto;
}

.contact-card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    padding: var(--space-xl);
    text-align: center;
    transition: all var(--transition-base);
}

.contact-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: var(--color-secondary);
}

.contact-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--color-secondary) 0%, var(--color-primary) 100%);
    color: white;
    border-radius: var(--radius-full);
    margin-bottom: var(--space-lg);
}

.contact-card h3 {
    font-size: var(--font-size-xl);
    color: var(--color-primary-dark);
    margin-bottom: var(--space-md);
}

.contact-card a {
    color: var(--color-primary);
    font-weight: var(--font-weight-medium);
}

.contact-card p {
    color: var(--color-text-light);
    line-height: var(--line-height-relaxed);
}

/* Footer */
.site-footer {
    background: var(--color-primary-dark);
    color: white;
    padding: var(--space-3xl) 0 var(--space-xl);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--space-2xl);
    margin-bottom: var(--space-2xl);
}

.footer-brand .logo {
    color: white;
    margin-bottom: var(--space-md);
}

.footer-brand .logo-icon {
    color: var(--color-secondary);
}

.footer-description {
    color: rgba(255, 255, 255, 0.7);
    line-height: var(--line-height-relaxed);
}

.footer-links h4,
.footer-contact h4 {
    font-size: var(--font-size-lg);
    margin-bottom: var(--space-md);
    color: white;
}

.footer-links ul,
.footer-contact ul {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.footer-links a,
.footer-contact a {
    color: rgba(255, 255, 255, 0.7);
    transition: color var(--transition-base);
}

.footer-links a:hover,
.footer-contact a:hover {
    color: white;
}

.footer-bottom {
    padding-top: var(--space-xl);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    text-align: center;
    color: rgba(255, 255, 255, 0.6);
    font-size: var(--font-size-sm);
}

/* Responsive Design */
@media (max-width: 768px) {
    :root {
        --font-size-3xl: 1.75rem;
        --font-size-4xl: 2rem;
        --container-padding: 1rem;
    }
    
    .hero {
        padding: var(--space-2xl) 0 var(--space-xl);
    }
    
    .hero-decoration {
        width: 250px;
        height: 250px;
    }
    
    .hero-features {
        flex-direction: column;
        gap: var(--space-md);
    }
    
    .quiz-section {
        padding: var(--space-2xl) 0;
    }
    
    .question-card {
        padding: var(--space-xl);
    }
    
    .question-title {
        font-size: var(--font-size-xl);
    }
    
    .contact-form-container {
        padding: var(--space-xl);
    }
    
    .form-title {
        font-size: var(--font-size-2xl);
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: var(--space-xl);
    }
}

@media (max-width: 480px) {
    .answer-option {
        padding: var(--space-md);
        font-size: var(--font-size-sm);
    }
    
    .contact-grid {
        grid-template-columns: 1fr;
    }
}

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

/* Focus visible for keyboard navigation */
:focus-visible {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}