:root {
    /* Brand Colors */
    --primary: #2563eb;
    --primary-dark: #1d4ed8;
    --accent: #f59e0b;
    --accent-glow: rgba(245, 158, 11, 0.4);
    
    /* Neutral Colors - Light Theme */
    --bg: #f8fafc;
    --card-bg: rgba(255, 255, 255, 0.8);
    --text: #1e293b;
    --text-muted: #64748b;
    --border: rgba(226, 232, 240, 0.8);
    --header-bg: rgba(248, 250, 252, 0.8);
    
    /* Shadows */
    --shadow: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    
    /* Layout */
    --radius: 12px;
    --header-height: 80px;
    --container: 1100px;
}

[data-theme="dark"] {
    --bg: #0f172a;
    --card-bg: rgba(30, 41, 59, 0.7);
    --text: #f1f5f9;
    --text-muted: #94a3b8;
    --border: rgba(51, 65, 85, 0.5);
    --header-bg: rgba(15, 23, 42, 0.8);
    --shadow: 0 4px 6px -1px rgb(0 0 0 / 0.3);
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--bg);
    color: var(--text);
    line-height: 1.6;
    transition: background-color 0.3s ease, color 0.3s ease;
    overflow-x: hidden;
}

h1, h2, h3, h4, .brand-name {
    font-family: 'Outfit', sans-serif;
    font-weight: 700;
}

a {
    text-decoration: none;
    color: inherit;
    transition: 0.2s ease;
}

ul {
    list-style: none;
}

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

.container {
    max-width: var(--container);
    margin: 0 auto;
    padding: 0 1.5rem;
}

/* Header & Nav */
.header {
    height: var(--header-height);
    background: var(--header-bg);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border);
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    display: flex;
    align-items: center;
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
    position: relative; /* Para o centro absoluto funcionar */
}

.logo {
    font-size: 1.5rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--primary);
    z-index: 10;
    min-width: 160px;
}

.brand-name {
    font-size: 1.4rem;
}

.nav-links {
    display: flex;
    gap: 1.5rem;
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    white-space: nowrap;
}

.theme-switch {
    z-index: 10;
}

.nav-link {
    font-weight: 500;
    font-size: 0.95rem;
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary);
    transition: 0.3s ease;
}

.nav-link:hover::after, .nav-link.active::after {
    width: 100%;
}

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

/* Hero Section */
.hero {
    padding-top: calc(var(--header-height) + 4rem);
    padding-bottom: 4rem;
    text-align: center;
    position: relative;
}

.hero-content {
    max-width: 800px;
    margin: 0 auto;
    animation: fadeInUp 0.8s ease;
}

.hero-badge {
    display: inline-block;
    padding: 0.5rem 1rem;
    background: rgba(37, 99, 235, 0.1);
    color: var(--primary);
    border-radius: 50px;
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
}

.hero-title {
    font-size: 3.5rem;
    line-height: 1.1;
    margin-bottom: 1.5rem;
    text-align: center;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero-description {
    font-size: 1.25rem;
    color: var(--text-muted);
    margin-bottom: 2rem;
    text-align: center;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.8rem 2rem;
    border-radius: var(--radius);
    font-weight: 600;
    cursor: pointer;
    border: none;
    transition: 0.3s ease;
}

.btn-primary {
    background: var(--primary);
    color: white;
    box-shadow: 0 4px 14px 0 rgba(37, 99, 235, 0.39);
}

.btn-primary:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
}

/* Sections */
section {
    padding: 6rem 0;
}

.section-header {
    text-align: center;
    max-width: 700px;
    margin: 0 auto 4rem;
}

.section-title {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.section-subtitle {
    color: var(--text-muted);
}

/* Cards & Grid */
.grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.card {
    background: var(--card-bg);
    border: 1px solid var(--border);
    padding: 2.5rem;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    transition: 0.3s ease;
    height: 100%;
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary);
}

.card-icon {
    width: 50px;
    height: 50px;
    background: rgba(37, 99, 235, 0.1);
    color: var(--primary);
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 12px;
    font-size: 1.5rem;
    margin-bottom: 1.5rem;
}

.card-title {
    font-size: 1.25rem;
    margin-bottom: 1rem;
}

.card-text {
    color: var(--text-muted);
    font-size: 0.95rem;
}

/* Animations */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Responsive */
/* Tools & Interactivity */
.tool-container {
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 3rem;
    box-shadow: var(--shadow-lg);
    max-width: 800px;
    margin: 0 auto;
}

.input-group {
    margin-bottom: 2rem;
    text-align: left;
}

.input-label {
    display: block;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--text);
}

.input-field {
    width: 100%;
    padding: 1rem;
    border-radius: 8px;
    border: 1px solid var(--border);
    background: var(--bg);
    color: var(--text);
    font-size: 1rem;
    font-family: inherit;
    transition: 0.3s ease;
}

.input-field:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

/* AI Generator Styles */
.ai-response {
    margin-top: 2rem;
    padding: 2rem;
    border-radius: 8px;
    background: rgba(37, 99, 235, 0.05);
    border-left: 4px solid var(--primary);
    display: none;
    animation: fadeIn 0.5s ease;
}

.response-title {
    color: var(--primary);
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

/* Multiplicator Game Styles */
.game-stats {
    display: flex;
    justify-content: center;
    gap: 2rem;
    margin-bottom: 2rem;
    font-weight: 700;
}

.stat-item {
    padding: 0.5rem 1rem;
    border-radius: 50px;
    background: var(--border);
    font-size: 0.9rem;
}

.stat-item.correct { color: #10b981; }
.stat-item.wrong { color: #ef4444; }

.game-question {
    font-size: 3rem;
    font-weight: 800;
    margin: 2rem 0;
    font-family: 'Outfit';
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

/* Toggle Theme Switch */
.theme-switch {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--border);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    font-size: 1.2rem;
}
@import url('https://fonts.googleapis.com/css2?family=JetBrains+Mono:wght@400;700&display=swap');

/* Code Blocks */
.code-section {
    margin-top: 3rem;
    background: #0f172a;
    border-radius: 1.5rem;
    padding: 0;
    border: 1px solid rgba(255, 255, 255, 0.1);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4);
    overflow: hidden;
}

.code-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 1.5rem;
    background: rgba(255, 255, 255, 0.05);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.code-header h3 {
    margin: 0;
    font-size: 1rem;
    color: var(--accent);
}

.code-lang {
    background: rgba(255, 255, 255, 0.1);
    padding: 0.2rem 0.6rem;
    border-radius: 0.4rem;
    font-size: 0.75rem;
    color: #94a3b8;
    font-family: 'JetBrains Mono', monospace;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.code-container {
    position: relative;
    max-height: 500px;
    overflow-y: auto;
}

pre {
    margin: 0;
    padding: 1.5rem;
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.9rem;
    line-height: 1.7;
    color: #e2e8f0;
}

.copy-btn {
    position: absolute;
    top: 1rem;
    right: 1.5rem;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    color: #94a3b8;
    padding: 0.4rem 0.8rem;
    border-radius: 0.4rem;
    cursor: pointer;
    font-size: 0.75rem;
    transition: all 0.2s ease;
}

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

/* Syntax Highlighting */
.token.comment { color: #64748b; }
.token.keyword { color: #f472b6; }
.token.string { color: #4ade80; }
.token.function { color: #60a5fa; }
.token.number { color: #fbbf24; }
.token.operator { color: #94a3b8; }
.token.builtin { color: #818cf8; }

/* =============================================
   HERO CAROUSEL
   ============================================= */

.hero-carousel {
    position: relative;
    width: 100%;
    height: 100vh;
    min-height: 600px;
    overflow: hidden;
    padding: 0 !important;
}

.carousel-track {
    position: relative;
    width: 100%;
    height: 100%;
}

.carousel-slide {
    position: absolute;
    inset: 0;
    background-size: cover;
    background-position: center;
    opacity: 0;
    transition: opacity 0.9s ease, transform 0.9s ease;
    transform: scale(1.04);
}

.carousel-slide.active {
    opacity: 1;
    transform: scale(1);
    z-index: 1;
}

.carousel-slide.leaving {
    opacity: 0;
    transform: scale(0.97);
    z-index: 0;
}

/* Overlay escuro com gradiente */
.carousel-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(
        to right,
        rgba(0, 0, 0, 0.72) 0%,
        rgba(0, 0, 0, 0.45) 55%,
        rgba(0, 0, 0, 0.15) 100%
    );
    display: flex;
    align-items: center;
}

/* Conteúdo de texto */
.carousel-content {
    padding-top: var(--header-height);
    animation: carouselFadeUp 0.8s ease both;
}

@keyframes carouselFadeUp {
    from { opacity: 0; transform: translateY(30px); }
    to   { opacity: 1; transform: translateY(0); }
}

.carousel-slide.active .carousel-content {
    animation: carouselFadeUp 0.8s ease 0.2s both;
}

.carousel-title {
    font-size: clamp(2.2rem, 5vw, 4rem);
    line-height: 1.1;
    color: #ffffff;
    margin: 1rem 0 1.2rem;
    text-shadow: 0 2px 20px rgba(0,0,0,0.4);
    max-width: 640px;
}

.carousel-desc {
    font-size: clamp(1rem, 2vw, 1.25rem);
    color: rgba(255,255,255,0.88);
    max-width: 560px;
    margin-bottom: 2.2rem;
    line-height: 1.7;
    text-shadow: 0 1px 8px rgba(0,0,0,0.4);
}

.carousel-actions {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.carousel-btn-ghost {
    background: rgba(255,255,255,0.15);
    border: 1.5px solid rgba(255,255,255,0.55);
    color: #fff;
    backdrop-filter: blur(6px);
}

.carousel-btn-ghost:hover {
    background: rgba(255,255,255,0.28);
    transform: translateY(-2px);
}

/* Setas de navegação */
.carousel-arrow {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    z-index: 10;
    width: 52px;
    height: 52px;
    border-radius: 50%;
    border: 1.5px solid rgba(255,255,255,0.5);
    background: rgba(255,255,255,0.12);
    color: white;
    font-size: 1.2rem;
    cursor: pointer;
    backdrop-filter: blur(8px);
    transition: background 0.25s ease, transform 0.25s ease, border-color 0.25s ease;
    display: flex;
    align-items: center;
    justify-content: center;
}

.carousel-arrow:hover {
    background: var(--primary);
    border-color: var(--primary);
    transform: translateY(-50%) scale(1.1);
}

.carousel-prev { left: 1.5rem; }
.carousel-next { right: 1.5rem; }

/* Dots */
.carousel-dots {
    position: absolute;
    bottom: 3rem;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 0.6rem;
    z-index: 10;
}

.carousel-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    border: 2px solid rgba(255,255,255,0.6);
    background: transparent;
    cursor: pointer;
    transition: all 0.3s ease;
    padding: 0;
}

.carousel-dot.active {
    background: white;
    border-color: white;
    transform: scale(1.3);
}

/* Barra de progresso */
.carousel-progress {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: rgba(255,255,255,0.2);
    z-index: 10;
}

.carousel-progress-bar {
    height: 100%;
    background: var(--primary);
    width: 0%;
    transition: width linear;
}

/* Hero badge dentro do carrossel */
.carousel-content .hero-badge {
    background: rgba(37, 99, 235, 0.75);
    color: white;
    backdrop-filter: blur(4px);
}