/* Forthing Design System */
:root {
    /* Colors - Light Mode (Default) */
    --bg-primary: #FFFFFF;
    --bg-secondary: #F5F5F5;
    --text-primary: #121212;
    --text-secondary: #666666;
    --accent-color: #007BFF;
    --border-color: #E5E5E5;

    /* Typography */
    --font-main: 'Inter', sans-serif;

    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 4rem;
    --spacing-xl: 8rem;

    /* Border Radius */
    --radius-sm: 4px;
    --radius-md: 8px;

    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-medium: 0.4s ease;
}

[data-theme="dark"] {
    --bg-primary: #121212;
    --bg-secondary: #1E1E1E;
    --text-primary: #FFFFFF;
    --text-secondary: #AAAAAA;
    --border-color: #333333;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-main);
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    transition: background-color var(--transition-medium), color var(--transition-medium);
    overflow-x: hidden;
}

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

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

ul {
    list-style: none;
}

/* Utilities */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

.btn {
    display: inline-block;
    padding: 1rem 2rem;
    background-color: var(--text-primary);
    color: var(--bg-primary);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    border: 1px solid var(--text-primary);
    transition: all var(--transition-fast);
    cursor: pointer;
}

.btn:hover {
    background-color: transparent;
    color: var(--text-primary);
}

.section-title {
    font-size: 2.5rem;
    font-weight: 300;
    margin-bottom: var(--spacing-xs);
    text-transform: uppercase;
    letter-spacing: -1px;
}

.section-subtitle {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-lg);
    font-size: 1.1rem;
}

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    padding: var(--spacing-sm) 0;
    background-color: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(10px);
    z-index: 1000;
    border-bottom: 1px solid transparent;
    transition: background-color var(--transition-medium), border-color var(--transition-medium);
}

[data-theme="dark"] .navbar {
    background-color: rgba(18, 18, 18, 0.9);
    border-bottom: 1px solid var(--border-color);
}

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

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    letter-spacing: -1px;
    text-transform: uppercase;
}

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

.nav-links a {
    font-size: 0.9rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.nav-links a:hover {
    color: var(--accent-color);
}

.nav-actions {
    display: flex;
    gap: var(--spacing-sm);
    align-items: center;
}

.icon-btn {
    background: none;
    border: none;
    cursor: pointer;
    color: var(--text-primary);
    padding: 0.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* Hero Section */
.hero {
    height: 100vh;
    width: 100%;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #FFFFFF;
    /* Always white text on image */
    background-color: #333;
    /* Fallback */
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    z-index: 1;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.3);
    z-index: 2;
}

.hero-content {
    position: relative;
    z-index: 3;
    text-align: center;
    max-width: 800px;
    padding: 0 var(--spacing-md);
}

.hero-title {
    font-size: 5rem;
    font-weight: 800;
    line-height: 1;
    margin-bottom: var(--spacing-sm);
    letter-spacing: -2px;
}

.hero-subtitle {
    font-size: 1.5rem;
    font-weight: 300;
    margin-bottom: var(--spacing-lg);
    opacity: 0.9;
}

.btn-hero {
    background-color: #FFFFFF;
    color: #121212;
    border-color: #FFFFFF;
}

.btn-hero:hover {
    background-color: transparent;
    color: #FFFFFF;
}

/* Sections General */
section {
    padding: var(--spacing-xl) 0;
}

/* Products */
.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-md);
}

.product-card {
    position: relative;
}

.product-image {
    width: 100%;
    aspect-ratio: 4/5;
    object-fit: cover;
    margin-bottom: var(--spacing-sm);
    background-color: var(--bg-secondary);
}

.product-info h3 {
    font-size: 1.25rem;
    margin-bottom: 0.25rem;
}

.product-info p {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

/* Journal */
.journal-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: var(--spacing-lg);
}

.article-card {
    transition: transform var(--transition-medium);
}

.article-card:hover {
    transform: translateY(-5px);
}

.article-image {
    width: 100%;
    aspect-ratio: 16/9;
    object-fit: cover;
    margin-bottom: var(--spacing-sm);
    background-color: var(--bg-secondary);
}

.article-category {
    font-size: 0.8rem;
    text-transform: uppercase;
    color: var(--accent-color);
    font-weight: 700;
    margin-bottom: 0.5rem;
    display: block;
}

.article-title {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
}

/* Athletes */
.athlete-feature {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xl);
    align-items: center;
}

.athlete-image {
    width: 100%;
    aspect-ratio: 3/4;
    object-fit: cover;
    background-color: var(--bg-secondary);
}

.athlete-content blockquote {
    font-size: 1.5rem;
    font-style: italic;
    margin-bottom: var(--spacing-md);
    line-height: 1.4;
}

.athlete-name {
    font-weight: 700;
    font-size: 1.1rem;
}

.athlete-role {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

/* Contact */
.contact-container {
    max-width: 600px;
    margin: 0 auto;
}

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

.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.form-group label {
    font-size: 0.9rem;
    font-weight: 500;
}

.form-control {
    padding: 1rem;
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    font-family: inherit;
    font-size: 1rem;
    transition: border-color var(--transition-fast);
}

.form-control:focus {
    outline: none;
    border-color: var(--accent-color);
}

textarea.form-control {
    min-height: 150px;
    resize: vertical;
}

.checkbox-group {
    flex-direction: row;
    align-items: center;
    gap: 0.5rem;
}

/* Footer */
footer {
    padding: var(--spacing-lg) 0;
    border-top: 1px solid var(--border-color);
    text-align: center;
}

.footer-motto {
    font-size: 1.2rem;
    font-weight: 700;
    text-transform: uppercase;
    margin-bottom: var(--spacing-md);
    letter-spacing: 1px;
}

.footer-links {
    display: flex;
    justify-content: center;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.copyright {
    color: var(--text-secondary);
    font-size: 0.8rem;
}

/* Responsive */
@media (max-width: 768px) {
    .hero-title {
        font-size: 3rem;
    }

    .nav-links {
        display: none;
        /* simple mobile hide for MVP */
    }

    .athlete-feature {
        grid-template-columns: 1fr;
    }
}

/* Article Page Specifics */
.article-header {
    padding-top: 120px;
    /* Space for fixed navbar */
    padding-bottom: var(--spacing-md);
    text-align: center;
}

.article-meta {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-bottom: var(--spacing-sm);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.article-content {
    max-width: 800px;
    margin: 0 auto;
    padding: var(--spacing-md) 0;
}

.article-content p {
    margin-bottom: 1.5rem;
    font-size: 1.1rem;
    line-height: 1.8;
}

.article-content h2 {
    font-size: 2rem;
    margin-top: 2.5rem;
    margin-bottom: 1rem;
}

.article-content ul {
    list-style: disc;
    margin-left: 2rem;
    margin-bottom: 1.5rem;
}

.article-content li {
    margin-bottom: 0.5rem;
    font-size: 1.1rem;
}