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

:root {
    --color-primary: #1e3a8a;
    --color-secondary: #1e40af;
    --color-accent: #f59e0b;
    --color-white: #ffffff;
    --color-light: #f5f5f5;
    --color-gray: #6b7280;
    --color-dark: #1f2937;
    --font-primary: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    --max-width: 900px;
    --spacing-unit: 1rem;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-primary);
    color: var(--color-dark);
    background-color: var(--color-white);
    line-height: 1.6;
    font-size: 16px;
}

a {
    color: var(--color-secondary);
    text-decoration: none;
    transition: color 0.2s ease;
}

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

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    color: var(--color-primary);
    line-height: 1.3;
    margin-top: 1.5em;
    margin-bottom: 0.5em;
}

h1 {
    font-size: 2.5rem;
    color: var(--color-primary);
}

h2 {
    font-size: 2rem;
    border-bottom: 3px solid var(--color-accent);
    padding-bottom: 0.5rem;
}

h3 {
    font-size: 1.5rem;
    margin-top: 1.3em;
}

h4 {
    font-size: 1.25rem;
}

p {
    margin-bottom: 1em;
}

ul, ol {
    margin-left: 2em;
    margin-bottom: 1em;
}

li {
    margin-bottom: 0.5em;
}

blockquote {
    border-left: 4px solid var(--color-accent);
    padding-left: 1.5rem;
    margin: 1.5em 0;
    background-color: var(--color-light);
    padding: 1rem 1rem 1rem 1.5rem;
    font-style: italic;
    color: var(--color-gray);
}

code {
    background-color: var(--color-light);
    padding: 0.2em 0.5em;
    border-radius: 3px;
    font-family: 'Courier New', monospace;
    font-size: 0.9em;
}

/* Container */
.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 2rem;
}

/* Header */
.header {
    background-color: var(--color-primary);
    color: var(--color-white);
    padding: 1.5rem 0;
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

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

.logo {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--color-white);
    text-decoration: none;
}

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

.nav {
    display: flex;
    gap: 2rem;
}

.nav-link {
    color: var(--color-white);
    font-weight: 500;
    transition: color 0.2s ease;
}

.nav-link:hover {
    color: var(--color-accent);
    text-decoration: none;
}

/* Main Content */
.main {
    padding: 0;
}

.article {
    min-height: calc(100vh - 200px);
}

/* Hero Section */
.hero {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
    color: var(--color-white);
    padding: 4rem 2rem;
    text-align: center;
}

.hero h1 {
    color: var(--color-white);
    margin-bottom: 1rem;
    font-size: 2.8rem;
}

.lead {
    font-size: 1.2rem;
    margin-bottom: 2rem;
    opacity: 0.95;
    line-height: 1.5;
}

.cta-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
    margin-top: 2rem;
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 0.75rem 2rem;
    border-radius: 5px;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.3s ease;
    border: 2px solid transparent;
    cursor: pointer;
    font-size: 1rem;
}

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

.btn-primary:hover {
    background-color: #e8860b;
    border-color: #e8860b;
    text-decoration: none;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(245, 158, 11, 0.3);
}

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

.btn-secondary:hover {
    background-color: var(--color-white);
    color: var(--color-primary);
    text-decoration: none;
    transform: translateY(-2px);
}

/* Content Section */
.content {
    padding: 4rem 2rem;
}

.section {
    margin-bottom: 3rem;
}

.section p {
    margin-bottom: 1.2em;
    text-align: justify;
}

/* Download Section */
.download-section {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
    margin: 2rem 0;
}

.download-card {
    background-color: var(--color-light);
    padding: 2rem;
    border-radius: 8px;
    border-left: 4px solid var(--color-accent);
    text-align: center;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.download-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 16px rgba(0, 0, 0, 0.1);
}

.download-card h3 {
    margin-top: 0;
    color: var(--color-primary);
}

.download-card p {
    color: var(--color-gray);
    margin-bottom: 1.5rem;
}

/* FAQ Section */
.faq-item {
    background-color: var(--color-light);
    padding: 1.5rem;
    margin-bottom: 1.5rem;
    border-radius: 5px;
    border-left: 4px solid var(--color-accent);
}

.faq-item h3 {
    margin-top: 0;
    color: var(--color-primary);
    font-size: 1.1rem;
}

.faq-item p {
    margin-bottom: 0;
    color: var(--color-gray);
}

/* Footer */
.footer {
    background-color: var(--color-primary);
    color: var(--color-white);
    padding: 3rem 2rem;
    text-align: center;
    border-top: 4px solid var(--color-accent);
}

.footer p {
    margin-bottom: 0.5rem;
    font-size: 0.95rem;
}

.footer a {
    color: var(--color-accent);
}

.footer a:hover {
    text-decoration: underline;
}

/* Responsive Design */
@media (max-width: 768px) {
    h1 {
        font-size: 1.8rem;
    }

    h2 {
        font-size: 1.5rem;
    }

    h3 {
        font-size: 1.2rem;
    }

    .header .container {
        flex-direction: column;
        gap: 1rem;
        text-align: center;
    }

    .nav {
        gap: 1rem;
        font-size: 0.9rem;
    }

    .hero {
        padding: 2rem 1rem;
    }

    .hero h1 {
        font-size: 1.8rem;
    }

    .lead {
        font-size: 1rem;
    }

    .cta-buttons {
        flex-direction: column;
        gap: 0.5rem;
    }

    .btn {
        width: 100%;
        text-align: center;
    }

    .content {
        padding: 2rem 1rem;
    }

    .download-section {
        grid-template-columns: 1fr;
        gap: 1rem;
    }

    .container {
        padding: 0 1rem;
    }
}

@media (max-width: 480px) {
    h1 {
        font-size: 1.5rem;
    }

    h2 {
        font-size: 1.3rem;
    }

    h3 {
        font-size: 1.1rem;
    }

    body {
        font-size: 15px;
    }

    .hero h1 {
        font-size: 1.5rem;
    }

    .lead {
        font-size: 0.95rem;
    }

    ul, ol {
        margin-left: 1.5em;
    }

    blockquote {
        padding-left: 1rem;
        margin: 1rem 0;
    }
}

/* Accessibility */
@media (prefers-reduced-motion: reduce) {
    * {
        animation: none !important;
        transition: none !important;
    }
}

/* Print Styles */
@media print {
    .header,
    .footer,
    .nav,
    .cta-buttons {
        display: none;
    }

    body {
        line-height: 1.5;
    }

    h1, h2, h3 {
        page-break-after: avoid;
    }

    p {
        page-break-inside: avoid;
    }
}