/* ============================================
   CONTESTE.INFO - Stylesheet Principal
   Versão Preto e Branco
   ============================================ */

:root {
    /* Cores - Preto e Branco */
    --color-black: #000000;
    --color-gray-900: #111111;
    --color-gray-800: #222222;
    --color-gray-700: #333333;
    --color-gray-600: #555555;
    --color-gray-500: #777777;
    --color-gray-400: #999999;
    --color-gray-300: #bbbbbb;
    --color-gray-200: #dddddd;
    --color-gray-100: #f0f0f0;
    --color-white: #ffffff;
    
    /* Cores de Categoria (preto e branco) */
    --color-cultura: #222222;
    --color-educacao: #333333;
    --color-esportes: #444444;
    --color-trabalho: #555555;
    
    /* Tipografia */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-display: 'Playfair Display', Georgia, serif;
    
    /* Espaçamento */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    --spacing-3xl: 4rem;
    
    /* 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 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;
    --transition-base: 200ms ease;
    --transition-slow: 300ms ease;
    
    /* Container */
    --container-max: 1200px;
    --container-padding: 1.5rem;
}

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

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

body {
    font-family: var(--font-primary);
    font-size: 1rem;
    line-height: 1.6;
    color: var(--color-gray-800);
    background-color: var(--color-gray-50);
    overflow-x: hidden;
}

a { color: inherit; text-decoration: none; transition: color var(--transition-fast); }
a:hover { color: var(--color-black); }
img { max-width: 100%; height: auto; display: block; }
ul { list-style: none; }
button { font-family: inherit; cursor: pointer; border: none; background: none; }
input { font-family: inherit; }

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

/* Header */
.header {
    position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
    background-color: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow-sm);
    transition: box-shadow var(--transition-base);
}
.header.scrolled { box-shadow: var(--shadow-md); }
.header .container { display: flex; align-items: center; justify-content: space-between; height: 70px; }

.logo {
    display: flex; align-items: baseline;
    font-family: var(--font-display);
    font-weight: 700; font-size: 1.5rem;
    color: var(--color-black);
    letter-spacing: -0.02em;
}
.logo:hover { color: var(--color-gray-600); }
.logo-text { color: var(--color-black); }
.logo-dot { color: var(--color-gray-500); }

.nav { display: flex; align-items: center; }
.nav-list { display: flex; align-items: center; gap: var(--spacing-xl); }
.nav-link {
    position: relative; font-weight: 500; font-size: 0.9375rem;
    color: var(--color-gray-600); padding: var(--spacing-sm) 0;
    transition: color var(--transition-fast);
}
.nav-link::after {
    content: ''; position: absolute; bottom: 0; left: 0; width: 0; height: 2px;
    background-color: var(--color-black); transition: width var(--transition-base);
}
.nav-link:hover, .nav-link.active { color: var(--color-black); }
.nav-link:hover::after, .nav-link.active::after { width: 100%; }

.mobile-menu-btn {
    display: none; flex-direction: column; justify-content: space-between;
    width: 24px; height: 18px; padding: 0;
}
.mobile-menu-btn span {
    display: block; width: 100%; height: 2px;
    background-color: var(--color-black); border-radius: var(--radius-full);
    transition: all var(--transition-base);
}
.mobile-menu-btn.active span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
.mobile-menu-btn.active span:nth-child(2) { opacity: 0; }
.mobile-menu-btn.active span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

/* Hero */
.hero {
    padding-top: calc(70px + var(--spacing-3xl));
    padding-bottom: var(--spacing-3xl);
    background-color: var(--color-black);
    color: var(--color-white);
    overflow: hidden; position: relative;
}
.hero .container { display: grid; grid-template-columns: 1fr 1fr; gap: var(--spacing-3xl); align-items: center; }
.hero-content { position: relative; z-index: 1; }
.hero-title {
    font-family: var(--font-display);
    font-size: clamp(2.5rem, 5vw, 3.5rem);
    font-weight: 700; line-height: 1.2; margin-bottom: var(--spacing-lg);
}
.hero-title .highlight {
    color: var(--color-white);
    text-decoration: underline;
    text-underline-offset: 8px;
}
.hero-subtitle {
    font-size: 1.125rem; line-height: 1.7; opacity: 0.8;
    margin-bottom: var(--spacing-xl); max-width: 500px;
}
.hero-visual { position: relative; display: flex; justify-content: center; align-items: center; }
.hero-shape {
    width: 400px; height: 400px;
    background: linear-gradient(135deg, rgba(255,255,255,0.15) 0%, rgba(255,255,255,0.03) 100%);
    border-radius: 30% 70% 70% 30% / 30% 30% 70% 70%;
    animation: morphShape 8s ease-in-out infinite;
}
@keyframes morphShape {
    0%, 100% { border-radius: 30% 70% 70% 30% / 30% 30% 70% 70%; }
    50% { border-radius: 50% 50% 33% 67% / 56% 68% 32% 44%; }
}

/* Buttons */
.btn {
    display: inline-flex; align-items: center; justify-content: center;
    padding: 0.75rem 1.5rem; font-weight: 600; font-size: 0.9375rem;
    border-radius: var(--radius-lg); transition: all var(--transition-base); cursor: pointer;
}
.btn-primary {
    background-color: var(--color-white); color: var(--color-black);
    box-shadow: 0 4px 14px rgba(255, 255, 255, 0.2);
}
.btn-primary:hover {
    background-color: transparent; color: var(--color-white);
    transform: translateY(-2px); box-shadow: 0 6px 20px rgba(255, 255, 255, 0.3);
}
.btn-secondary {
    background-color: var(--color-black); color: var(--color-white);
    border: 2px solid var(--color-black);
}
.btn-secondary:hover {
    background-color: transparent; color: var(--color-black);
}

/* Sections */
.sections { padding: var(--spacing-3xl) 0; }
.category-section { margin-bottom: var(--spacing-3xl); }
.category-section:last-child { margin-bottom: 0; }

.category-header {
    display: flex; align-items: center; gap: var(--spacing-md);
    margin-bottom: var(--spacing-xl); padding-bottom: var(--spacing-md);
    border-bottom: 2px solid var(--color-gray-200);
}
.category-icon {
    display: flex; align-items: center; justify-content: center;
    width: 48px; height: 48px; border-radius: var(--radius-lg);
    color: var(--color-white);
}
#cultura .category-icon { background-color: var(--color-cultura); }
#educacao .category-icon { background-color: var(--color-educacao); }
#esportes .category-icon { background-color: var(--color-esportes); }
#trabalho .category-icon { background-color: var(--color-trabalho); }

.category-title {
    font-family: var(--font-display);
    font-size: 1.75rem; font-weight: 700;
    color: var(--color-black); flex: 1;
}
.see-more {
    font-weight: 600; font-size: 0.875rem; color: var(--color-black);
    text-transform: uppercase; letter-spacing: 0.05em;
    transition: transform var(--transition-fast);
}
.see-more:hover { transform: translateX(4px); color: var(--color-black); }

/* News Grid */
.news-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--spacing-xl); }

/* News Card */
.news-card {
    background-color: var(--color-white);
    border-radius: var(--radius-xl); overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: all var(--transition-base);
}
.news-card:hover { transform: translateY(-8px); box-shadow: var(--shadow-xl); }
.news-card.featured .news-image { height: 240px; }

.news-image {
    position: relative; height: 180px;
    background-color: var(--color-gray-100);
    background-size: cover; background-position: center;
    display: flex; align-items: flex-start; padding: var(--spacing-md);
}
.news-tag {
    display: inline-block; padding: 0.25rem 0.75rem;
    background-color: var(--color-black);
    color: var(--color-white);
    font-size: 0.75rem; font-weight: 600;
    text-transform: uppercase; letter-spacing: 0.05em;
    border-radius: var(--radius-full);
}

.news-content { padding: var(--spacing-lg); }
.news-date {
    display: block; font-size: 0.8125rem;
    color: var(--color-gray-500); margin-bottom: var(--spacing-sm);
}
.news-title {
    font-size: 1.0625rem; font-weight: 600; line-height: 1.4;
    margin-bottom: var(--spacing-sm); display: -webkit-box;
    -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden;
}
.news-title a:hover { color: var(--color-black); }
.news-excerpt {
    font-size: 0.875rem; color: var(--color-gray-600); line-height: 1.6;
    display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden;
}

/* Newsletter */
.newsletter {
    padding: var(--spacing-3xl) 0;
    background-color: var(--color-black);
}
.newsletter-content { text-align: center; max-width: 600px; margin: 0 auto; }
.newsletter-title {
    font-family: var(--font-display);
    font-size: 2rem; font-weight: 700;
    color: var(--color-white); margin-bottom: var(--spacing-md);
}
.newsletter-text { color: var(--color-gray-400); margin-bottom: var(--spacing-xl); }
.newsletter-form { display: flex; gap: var(--spacing-md); max-width: 500px; margin: 0 auto; }
.newsletter-input {
    flex: 1; padding: 0.875rem 1.25rem;
    border: 2px solid var(--color-gray-600); border-radius: var(--radius-lg);
    background-color: var(--color-gray-800); color: var(--color-white);
    font-size: 1rem; transition: border-color var(--transition-fast);
}
.newsletter-input::placeholder { color: var(--color-gray-500); }
.newsletter-input:focus { outline: none; border-color: var(--color-white); }

/* Footer */
.footer {
    background-color: var(--color-black);
    color: var(--color-gray-400);
    padding-top: var(--spacing-3xl); padding-bottom: var(--spacing-xl);
}
.footer-grid {
    display: grid; grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: var(--spacing-2xl); margin-bottom: var(--spacing-2xl);
}
.footer-brand .logo { margin-bottom: var(--spacing-md); }
.footer-brand .logo-text { color: var(--color-white); }
.footer-brand .logo-dot { color: var(--color-gray-500); }
.footer-description { font-size: 0.9375rem; line-height: 1.7; max-width: 300px; }

.footer-title {
    font-size: 0.875rem; font-weight: 600;
    text-transform: uppercase; letter-spacing: 0.05em;
    color: var(--color-white); margin-bottom: var(--spacing-lg);
}
.footer-links ul { display: flex; flex-direction: column; gap: var(--spacing-sm); }
.footer-links a { font-size: 0.9375rem; transition: color var(--transition-fast); }
.footer-links a:hover { color: var(--color-white); }

.footer-contact p { margin-bottom: var(--spacing-md); }
.footer-contact a { color: var(--color-gray-400); }
.footer-contact a:hover { color: var(--color-white); }

.social-links { display: flex; gap: var(--spacing-md); }
.social-links a {
    display: flex; align-items: center; justify-content: center;
    width: 40px; height: 40px; border-radius: var(--radius-lg);
    background-color: var(--color-gray-800);
    transition: all var(--transition-fast);
}
.social-links a:hover {
    background-color: var(--color-white);
    color: var(--color-black);
}

.footer-bottom {
    padding-top: var(--spacing-xl);
    border-top: 1px solid var(--color-gray-800);
    text-align: center; font-size: 0.875rem;
}

/* Page Hero (for category pages) */
.page-hero {
    padding-top: calc(70px + var(--spacing-3xl));
    padding-bottom: var(--spacing-2xl);
    background-color: var(--color-black);
    color: var(--color-white);
}
.page-hero .container { text-align: center; }
.page-hero h1 {
    font-family: var(--font-display);
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 700; margin-bottom: var(--spacing-md);
}
.page-hero p { font-size: 1.125rem; opacity: 0.9; max-width: 600px; margin: 0 auto; }
.breadcrumb {
    display: flex; justify-content: center; gap: var(--spacing-sm);
    margin-bottom: var(--spacing-lg); font-size: 0.875rem; opacity: 0.8;
}
.breadcrumb a:hover { color: var(--color-white); }

/* Responsive */
@media (max-width: 1024px) {
    .news-grid { grid-template-columns: repeat(2, 1fr); }
    .footer-grid { grid-template-columns: repeat(2, 1fr); }
    .hero .container { grid-template-columns: 1fr; text-align: center; }
    .hero-subtitle { margin-left: auto; margin-right: auto; }
    .hero-visual { display: none; }
}

@media (max-width: 768px) {
    :root { --container-padding: 1rem; }
    
    .mobile-menu-btn { display: flex; }
    .nav {
        position: fixed; top: 70px; left: 0; right: 0;
        background-color: var(--color-white);
        box-shadow: var(--shadow-lg);
        transform: translateY(-100%); opacity: 0; visibility: hidden;
        transition: all var(--transition-base);
    }
    .nav.active { transform: translateY(0); opacity: 1; visibility: visible; }
    .nav-list { flex-direction: column; gap: 0; padding: var(--spacing-lg); }
    .nav-link {
        display: block; padding: var(--spacing-md) 0;
        border-bottom: 1px solid var(--color-gray-100); width: 100%;
    }
    .nav-link::after { display: none; }
    
    .news-grid { grid-template-columns: 1fr; }
    .category-header { flex-wrap: wrap; }
    .see-more { order: 3; width: 100%; text-align: right; margin-top: var(--spacing-sm); }
    .newsletter-form { flex-direction: column; }
    
    .footer-grid { grid-template-columns: 1fr; gap: var(--spacing-xl); }
    .footer-brand { order: 1; }
    .footer-contact { order: 2; }
    .footer-links:first-of-type { order: 3; }
    .footer-links:last-of-type { order: 4; }
}

@media (max-width: 480px) {
    .hero-title { font-size: 2rem; }
    .category-title { font-size: 1.5rem; }
    .newsletter-title { font-size: 1.5rem; }
}

/* Animations */
.scroll-animate { opacity: 0; transform: translateY(20px); transition: all 0.6s ease; }
.scroll-animate.visible { opacity: 1; transform: translateY(0); }

/* Accessibility */
a:focus-visible, button:focus-visible, input:focus-visible {
    outline: 2px solid var(--color-black); outline-offset: 2px;
}
.sr-only {
    position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
    overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0;
}
::selection { background-color: var(--color-black); color: var(--color-white); }