/* -------------------------------------------------------------------
   1. Global Styles & Variables
------------------------------------------------------------------- */

:root {
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
    --font-secondary: 'Georgia', 'Times New Roman', serif;

    /* Light Theme */
    --color-background-light: #F9FAFB;
    --color-surface-light: #FFFFFF;
    --color-primary-light: #2563EB;
    --color-primary-hover-light: #1D4ED8;
    --color-text-primary-light: #111827;
    --color-text-secondary-light: #4B5563;
    --color-border-light: #E5E7EB;
    --color-success-light: #10B981;
    --color-accent-light: #F59E0B;

    /* Dark Theme */
    --color-background-dark: #111827;
    --color-surface-dark: #1F2937;
    --color-primary-dark: #3B82F6;
    --color-primary-hover-dark: #2563EB;
    --color-text-primary-dark: #F9FAFB;
    --color-text-secondary-dark: #9CA3AF;
    --color-border-dark: #374151;
    --color-success-dark: #34D399;
    --color-accent-dark: #FBBF24;

    /* Default to Light Theme */
    --color-background: var(--color-background-light);
    --color-surface: var(--color-surface-light);
    --color-primary: var(--color-primary-light);
    --color-primary-hover: var(--color-primary-hover-light);
    --color-text-primary: var(--color-text-primary-light);
    --color-text-secondary: var(--color-text-secondary-light);
    --color-border: var(--color-border-light);
    --color-success: var(--color-success-light);
    --color-accent: var(--color-accent-light);

    --spacing-xs: 4px;
    --spacing-sm: 8px;
    --spacing-md: 16px;
    --spacing-lg: 24px;
    --spacing-xl: 32px;
    --spacing-xxl: 48px;
    --spacing-xxxl: 64px;

    --border-radius-sm: 4px;
    --border-radius-md: 8px;
    --border-radius-lg: 16px;

    --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 -2px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -4px rgba(0, 0, 0, 0.1);

    --transition-fast: all 0.2s ease-in-out;
    --transition-medium: all 0.3s ease-in-out;
}

@media (prefers-color-scheme: dark) {
    :root {
        --color-background: var(--color-background-dark);
        --color-surface: var(--color-surface-dark);
        --color-primary: var(--color-primary-dark);
        --color-primary-hover: var(--color-primary-hover-dark);
        --color-text-primary: var(--color-text-primary-dark);
        --color-text-secondary: var(--color-text-secondary-dark);
        --color-border: var(--color-border-dark);
        --color-success: var(--color-success-dark);
        --color-accent: var(--color-accent-dark);
    }
}

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

html {
    font-size: 16px;
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-primary);
    background-color: var(--color-background);
    color: var(--color-text-primary);
    line-height: 1.6;
}

h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.2;
    color: var(--color-text-primary);
    margin-bottom: var(--spacing-md);
}

h1 {
    font-size: 3rem;
}

h2 {
    font-size: 2.25rem;
}

h3 {
    font-size: 1.5rem;
}

h4 {
    font-size: 1.25rem;
}

p {
    margin-bottom: var(--spacing-md);
    color: var(--color-text-secondary);
    max-width: 75ch;
}

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

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

ul, ol {
    list-style: none;
}

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

main {
    overflow-x: hidden;
}

section {
    padding: var(--spacing-xxxl) var(--spacing-xl);
    max-width: 1200px;
    margin: 0 auto;
}

.section-subtitle {
    font-size: 1.125rem;
    color: var(--color-text-secondary);
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
    text-align: center;
    margin-top: calc(-1 * var(--spacing-sm));
    margin-bottom: var(--spacing-xxl);
}

.section-divider {
    border: 0;
    height: 1px;
    background-color: var(--color-border);
    max-width: 1200px;
    margin: 0 auto;
}

/* -------------------------------------------------------------------
   2. Buttons & Forms
------------------------------------------------------------------- */

.button-primary, .button-large {
    display: inline-block;
    font-weight: 600;
    text-align: center;
    vertical-align: middle;
    cursor: pointer;
    border: 1px solid transparent;
    padding: var(--spacing-md) var(--spacing-lg);
    font-size: 1rem;
    border-radius: var(--border-radius-md);
    transition: var(--transition-fast);
    background-color: var(--color-primary);
    color: #FFFFFF;
    text-decoration: none;
}

.button-primary:hover, .button-large:hover {
    background-color: var(--color-primary-hover);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
    text-decoration: none;
}

.button-large {
    padding: var(--spacing-lg) var(--spacing-xl);
    font-size: 1.125rem;
}

.form-group {
    margin-bottom: var(--spacing-md);
}

.form-group label {
    display: block;
    margin-bottom: var(--spacing-sm);
    font-weight: 600;
    color: var(--color-text-primary);
}

.form-group input {
    width: 100%;
    padding: var(--spacing-md);
    font-size: 1rem;
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius-md);
    background-color: var(--color-surface);
    color: var(--color-text-primary);
    transition: var(--transition-fast);
}

.form-group input:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.3);
}

/* -------------------------------------------------------------------
   3. Header & Navigation
------------------------------------------------------------------- */

header {
    background-color: var(--color-surface);
    box-shadow: var(--shadow-sm);
    position: sticky;
    top: 0;
    z-index: 1000;
    width: 100%;
}

nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 1200px;
    margin: 0 auto;
    padding: var(--spacing-md) var(--spacing-xl);
}

.logo a {
    font-size: 1.75rem;
    font-weight: 800;
    color: var(--color-text-primary);
    text-decoration: none;
}

.nav-links ul {
    display: flex;
    gap: var(--spacing-lg);
}

.nav-links a {
    font-weight: 500;
    color: var(--color-text-secondary);
    text-decoration: none;
    position: relative;
    padding: var(--spacing-sm) 0;
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--color-primary);
    transition: width 0.3s ease;
}

.nav-links a:hover {
    color: var(--color-text-primary);
    text-decoration: none;
}

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

/* -------------------------------------------------------------------
   4. Hero Section
------------------------------------------------------------------- */

.hero {
    display: grid;
    grid-template-columns: 1fr 1fr;
    align-items: center;
    gap: var(--spacing-xxxl);
    min-height: calc(100vh - 80px); /* Adjust based on header height */
}

.hero-content h1 {
    margin-bottom: var(--spacing-lg);
}

.hero-content p {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-xl);
}

.hero-image img {
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-lg);
    object-fit: cover;
}

/* -------------------------------------------------------------------
   5. Project Description Section
------------------------------------------------------------------- */

.project-description {
    text-align: center;
}

.project-description h2 {
    margin-bottom: var(--spacing-xl);
}

.project-description p {
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
    font-size: 1.125rem;
}

/* -------------------------------------------------------------------
   6. Toolkit Overview Section
------------------------------------------------------------------- */

.toolkit-overview h2 {
    text-align: center;
}

.toolkit-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-xl);
}

.tool-card {
    background-color: var(--color-surface);
    padding: var(--spacing-xl);
    border-radius: var(--border-radius-lg);
    border: 1px solid var(--color-border);
    box-shadow: var(--shadow-md);
    transition: var(--transition-medium);
}

.tool-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
}

.tool-icon {
    margin-bottom: var(--spacing-md);
    color: var(--color-primary);
}

.tool-icon svg {
    width: 40px;
    height: 40px;
}

.tool-card h3 {
    margin-bottom: var(--spacing-sm);
}

/* -------------------------------------------------------------------
   7. Template Gallery Section
------------------------------------------------------------------- */

.template-gallery h2 {
    text-align: center;
}

.gallery-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-xl);
}

.gallery-item {
    background-color: var(--color-surface);
    border-radius: var(--border-radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: var(--transition-medium);
    text-align: center;
}

.gallery-item:hover {
    transform: scale(1.03);
    box-shadow: var(--shadow-lg);
}

.gallery-item img {
    width: 100%;
    height: 250px;
    object-fit: cover;
    border-bottom: 1px solid var(--color-border);
}

.gallery-item h4 {
    margin: var(--spacing-md) 0 var(--spacing-sm);
    padding: 0 var(--spacing-md);
}

.gallery-item p {
    padding: 0 var(--spacing-md) var(--spacing-md);
    font-size: 0.9rem;
}

/* -------------------------------------------------------------------
   8. Video Guides Section
------------------------------------------------------------------- */

.video-guides h2 {
    text-align: center;
}

.video-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: var(--spacing-xl);
    max-width: 900px;
    margin: 0 auto;
}

.video-card {
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
    background-color: var(--color-surface);
    padding: var(--spacing-lg);
    border-radius: var(--border-radius-md);
    border: 1px solid var(--color-border);
    cursor: pointer;
    transition: var(--transition-medium);
}

.video-card:hover {
    border-color: var(--color-primary);
    box-shadow: var(--shadow-md);
}

.video-thumbnail {
    flex-shrink: 0;
    width: 80px;
    height: 80px;
    background-color: var(--color-background);
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    color: var(--color-primary);
}

.video-thumbnail svg {
    width: 32px;
    height: 32px;
}

/* -------------------------------------------------------------------
   9. PDF Access Section
------------------------------------------------------------------- */

.pdf-access {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xxxl);
    align-items: center;
    background-color: var(--color-surface);
    padding: var(--spacing-xxxl);
    border-radius: var(--border-radius-lg);
}

.pdf-content h2 {
    color: var(--color-primary);
}

#form-success-message {
    background-color: var(--color-success);
    color: #fff;
    padding: var(--spacing-md);
    border-radius: var(--border-radius-md);
    text-align: center;
    font-weight: 600;
}

/* -------------------------------------------------------------------
   10. Testimonials Section
------------------------------------------------------------------- */

.testimonials h2 {
    text-align: center;
}

.testimonial-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-xl);
}

.testimonial-card {
    background-color: var(--color-surface);
    padding: var(--spacing-xl);
    border-radius: var(--border-radius-lg);
    border: 1px solid var(--color-border);
    display: flex;
    flex-direction: column;
}

.testimonial-card blockquote {
    font-family: var(--font-secondary);
    font-size: 1.125rem;
    font-style: italic;
    color: var(--color-text-secondary);
    border-left: 3px solid var(--color-primary);
    padding-left: var(--spacing-md);
    margin-bottom: var(--spacing-md);
    flex-grow: 1;
}

.testimonial-card cite {
    font-weight: 600;
    color: var(--color-text-primary);
    align-self: flex-end;
}

/* -------------------------------------------------------------------
   11. FAQ Section
------------------------------------------------------------------- */

.faq-section h2 {
    text-align: center;
}

.accordion {
    max-width: 800px;
    margin: 0 auto;
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius-md);
    overflow: hidden;
}

.accordion-item {
    border-bottom: 1px solid var(--color-border);
}

.accordion-item:last-child {
    border-bottom: none;
}

.accordion-header {
    width: 100%;
    background-color: var(--color-surface);
    border: none;
    padding: var(--spacing-lg);
    text-align: left;
    font-size: 1.125rem;
    font-weight: 600;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    color: var(--color-text-primary);
    transition: background-color 0.2s ease;
}

.accordion-header:hover {
    background-color: var(--color-background);
}

.accordion-icon {
    transition: transform 0.3s ease;
    flex-shrink: 0;
    margin-left: var(--spacing-md);
}

.accordion-content {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease-out, padding 0.3s ease-out;
    background-color: var(--color-background);
}

.accordion-content p {
    padding: 0 var(--spacing-lg) var(--spacing-lg);
    margin-bottom: 0;
}

.accordion-item.active .accordion-content {
    max-height: 300px; /* Adjust as needed */
    padding-bottom: var(--spacing-lg);
}

.accordion-item.active .accordion-icon {
    transform: rotate(180deg);
}

.faq-link {
    text-align: center;
    margin-top: var(--spacing-xl);
}

/* -------------------------------------------------------------------
   12. Footer
------------------------------------------------------------------- */

footer {
    background-color: var(--color-surface);
    color: var(--color-text-secondary);
    padding: var(--spacing-xxxl) var(--spacing-xl) 0;
    border-top: 1px solid var(--color-border);
}

.footer-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: var(--spacing-xl);
    max-width: 1200px;
    margin: 0 auto;
    padding-bottom: var(--spacing-xxl);
}

.footer-container h4 {
    color: var(--color-text-primary);
    margin-bottom: var(--spacing-md);
}

.footer-container ul {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.footer-container a {
    color: var(--color-text-secondary);
}

.footer-container a:hover {
    color: var(--color-primary);
    text-decoration: none;
}

.footer-bottom {
    border-top: 1px solid var(--color-border);
    padding: var(--spacing-lg) 0;
    text-align: center;
    font-size: 0.9rem;
}

.footer-bottom p {
    margin: 0;
}

/* -------------------------------------------------------------------
   13. Cookie Banner
------------------------------------------------------------------- */

.cookie-banner {
    position: fixed;
    bottom: 0;
    left: 0;
    width: 100%;
    background-color: var(--color-surface);
    box-shadow: 0 -2px 10px rgba(0, 0, 0, 0.1);
    padding: var(--spacing-lg);
    z-index: 2000;
    display: flex;
    justify-content: center;
    align-items: center;
    gap: var(--spacing-lg);
    transform: translateY(100%);
    animation: slide-up 0.5s forwards;
}

.cookie-banner-content {
    max-width: 900px;
    display: flex;
    align-items: center;
    gap: var(--spacing-xl);
}

.cookie-banner p {
    margin: 0;
    font-size: 0.9rem;
}

.cookie-banner-actions {
    display: flex;
    gap: var(--spacing-md);
    flex-shrink: 0;
}

.cookie-accept-btn {
    background-color: var(--color-primary);
    color: #fff;
    border: none;
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--border-radius-md);
    cursor: pointer;
    transition: var(--transition-fast);
}

.cookie-accept-btn:hover {
    background-color: var(--color-primary-hover);
}

.cookie-close-btn {
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--color-text-secondary);
}

@keyframes slide-up {
    from {
        transform: translateY(100%);
    }
    to {
        transform: translateY(0);
    }
}

/* -------------------------------------------------------------------
   14. Animations & Utility
------------------------------------------------------------------- */

.fade-in {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

/* -------------------------------------------------------------------
   15. Responsive Design
------------------------------------------------------------------- */

/* Tablet - 1024px */
@media (max-width: 1024px) {
    h1 { font-size: 2.5rem; }
    h2 { font-size: 2rem; }

    .hero {
        grid-template-columns: 1fr;
        text-align: center;
        padding-top: var(--spacing-xxl);
        padding-bottom: var(--spacing-xxl);
        min-height: auto;
    }

    .hero-content {
        order: 2;
    }

    .hero-image {
        order: 1;
        max-width: 500px;
        margin: 0 auto;
    }

    .gallery-grid {
        grid-template-columns: 1fr 1fr;
    }
}

/* Mobile - 768px */
@media (max-width: 768px) {
    html {
        font-size: 15px;
    }
    
    h1 { font-size: 2rem; }
    h2 { font-size: 1.75rem; }

    .nav-links {
        display: none; /* Simple hide for mobile, can be replaced with hamburger menu logic */
    }

    .pdf-access {
        grid-template-columns: 1fr;
    }

    .gallery-grid {
        grid-template-columns: 1fr;
    }

    .footer-container {
        grid-template-columns: 1fr 1fr;
        text-align: left;
    }
    
    .cookie-banner-content {
        flex-direction: column;
        text-align: center;
        gap: var(--spacing-md);
    }
}

/* Small Mobile - 480px */
@media (max-width: 480px) {
    section {
        padding: var(--spacing-xxl) var(--spacing-md);
    }

    .nav-cta {
        display: none;
    }
    
    .logo a {
        font-size: 1.5rem;
    }

    .hero-content p {
        font-size: 1.125rem;
    }

    .footer-container {
        grid-template-columns: 1fr;
    }
}