/* ===== RESET E VARIÁVEIS ===== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* Cores Primárias - Tema Escuro */
    --primary-dark: #0a0a0a;
    --primary-darker: #050505;
    --primary-gray: #1a1a1a;
    --secondary-gray: #2a2a2a;
    --accent-blue: #00d4ff;
    --accent-purple: #6366f1;
    --accent-green: #10b981;
    --accent-orange: #f59e0b;
    --accent-red: #ef4444;
    
    /* Cores de Texto */
    --text-primary: #ffffff;
    --text-secondary: #a1a1aa;
    --text-muted: #71717a;
    --text-highlight: #00d4ff;
    
    /* Gradientes Modernos */
    --gradient-primary: linear-gradient(135deg, #00d4ff 0%, #6366f1 100%);
    --gradient-secondary: linear-gradient(135deg, #6366f1 0%, #8b5cf6 100%);
    --gradient-dark: linear-gradient(135deg, #0a0a0a 0%, #1a1a1a 100%);
    --gradient-accent: linear-gradient(135deg, #10b981 0%, #00d4ff 100%);
    
    /* Tipografia */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-mono: 'JetBrains Mono', 'Fira Code', monospace;
    
    /* Espaçamento */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-xxl: 4rem;
    
    /* Tamanhos de Fonte */
    --text-xs: 0.75rem;
    --text-sm: 0.875rem;
    --text-base: 1rem;
    --text-lg: 1.125rem;
    --text-xl: 1.25rem;
    --text-2xl: 1.5rem;
    --text-3xl: 1.875rem;
    --text-4xl: 2.25rem;
    --text-5xl: 3rem;
    
    /* Animações */
    --transition-fast: 0.15s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
    
    /* Bordas */
    --border-radius: 0.5rem;
    --border-radius-lg: 1rem;
    --border-radius-xl: 1.5rem;
    
    /* Sombras */
    --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);
    --shadow-glow: 0 0 20px rgba(0, 212, 255, 0.3);
}

/* ===== BASE ===== */
html {
    scroll-behavior: smooth;
}

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

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

/* ===== NAVBAR ===== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(10, 10, 10, 0.95);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    z-index: 1000;
    transition: all var(--transition-normal);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 70px;
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    text-decoration: none;
    color: var(--text-primary);
}

.brand-icon {
    font-size: var(--text-2xl);
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.brand-text {
    font-size: var(--text-xl);
    font-weight: 700;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: var(--spacing-lg);
    margin: 0;
    padding: 0;
}

.nav-link {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    font-size: var(--text-sm);
    transition: all var(--transition-normal);
    position: relative;
    padding: var(--spacing-xs) 0;
}

.nav-link:hover,
.nav-link.active {
    color: var(--text-highlight);
}

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

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

.nav-toggle {
    display: none;
    flex-direction: column;
    cursor: pointer;
    gap: 4px;
}

.bar {
    width: 25px;
    height: 3px;
    background: var(--text-primary);
    transition: all var(--transition-normal);
    border-radius: 2px;
}

/* ===== HERO SECTION ===== */
.hero {
    position: relative;
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    background: var(--gradient-dark);
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 1;
}

.network-animation {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    opacity: 0.3;
}

.network-node {
    position: absolute;
    width: 8px;
    height: 8px;
    background: var(--accent-blue);
    border-radius: 50%;
    box-shadow: 0 0 20px var(--accent-blue);
    animation: pulse 2s infinite;
}

.network-node:nth-child(1) { top: 20%; left: 15%; animation-delay: 0s; }
.network-node:nth-child(2) { top: 30%; right: 20%; animation-delay: 0.5s; }
.network-node:nth-child(3) { bottom: 25%; left: 25%; animation-delay: 1s; }
.network-node:nth-child(4) { bottom: 20%; right: 15%; animation-delay: 1.5s; }

.network-line {
    position: absolute;
    top: 50%;
    left: 50%;
    width: 200px;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--accent-blue), transparent);
    transform: translate(-50%, -50%);
    animation: scan 3s linear infinite;
}

@keyframes pulse {
    0%, 100% { transform: scale(1); opacity: 0.3; }
    50% { transform: scale(1.5); opacity: 1; }
}

@keyframes scan {
    0% { transform: translate(-50%, -50%) rotate(0deg); }
    100% { transform: translate(-50%, -50%) rotate(360deg); }
}

.hero-content {
    position: relative;
    z-index: 2;
    text-align: center;
    max-width: 800px;
    padding: 0 var(--spacing-md);
}

.hero-title {
    font-size: clamp(var(--text-4xl), 5vw, var(--text-5xl));
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: var(--spacing-lg);
    background: linear-gradient(135deg, var(--text-primary) 0%, var(--text-highlight) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.highlight {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-description {
    font-size: var(--text-lg);
    color: var(--text-secondary);
    margin-bottom: var(--spacing-xl);
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.hero-actions {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
    margin-bottom: var(--spacing-xxl);
}

.hero-stats {
    display: flex;
    justify-content: center;
    gap: var(--spacing-xl);
    flex-wrap: wrap;
}

.stat-item {
    text-align: center;
    padding: var(--spacing-md);
    background: rgba(255, 255, 255, 0.05);
    border-radius: var(--border-radius-lg);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    min-width: 120px;
}

.stat-number {
    font-size: var(--text-3xl);
    font-weight: 800;
    color: var(--text-highlight);
    font-family: var(--font-mono);
}

.stat-label {
    font-size: var(--text-sm);
    color: var(--text-secondary);
    margin-top: var(--spacing-xs);
}

.scroll-indicator {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 2;
}

.scroll-arrow {
    width: 30px;
    height: 30px;
    border: 2px solid var(--text-highlight);
    border-radius: 50%;
    position: relative;
    animation: bounce 2s infinite;
}

.scroll-arrow::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 6px;
    height: 6px;
    border-right: 2px solid var(--text-highlight);
    border-bottom: 2px solid var(--text-highlight);
    transform: translate(-50%, -60%) rotate(45deg);
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% { transform: translateX(-50%) translateY(0); }
    40% { transform: translateX(-50%) translateY(-10px); }
    60% { transform: translateX(-50%) translateY(-5px); }
}

/* ===== BOTÕES ===== */
.btn {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-sm) var(--spacing-lg);
    border: none;
    border-radius: var(--border-radius);
    font-weight: 600;
    font-size: var(--text-sm);
    text-decoration: none;
    cursor: pointer;
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
}

.btn-primary {
    background: var(--gradient-primary);
    color: var(--text-primary);
    box-shadow: var(--shadow-md);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg), var(--shadow-glow);
}

.btn-secondary {
    background: transparent;
    color: var(--text-highlight);
    border: 2px solid var(--accent-blue);
}

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

/* ===== SEÇÕES ===== */
section {
    padding: var(--spacing-xxl) 0;
}

.section-header {
    text-align: center;
    margin-bottom: var(--spacing-xxl);
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

.section-title {
    font-size: clamp(var(--text-3xl), 4vw, var(--text-4xl));
    font-weight: 800;
    margin-bottom: var(--spacing-md);
    background: linear-gradient(135deg, var(--text-primary) 0%, var(--text-highlight) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.section-description {
    font-size: var(--text-lg);
    color: var(--text-secondary);
    line-height: 1.7;
}

/* ===== SOLUTIONS SECTION ===== */
.solutions {
    background: var(--primary-gray);
}

.solutions-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: var(--spacing-xl);
}

.solution-card {
    background: var(--secondary-gray);
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-xl);
    border: 1px solid rgba(255, 255, 255, 0.1);
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
}

.solution-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--gradient-primary);
    transform: translateX(-100%);
    transition: transform var(--transition-normal);
}

.solution-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-xl);
    border-color: var(--accent-blue);
}

.solution-card:hover::before {
    transform: translateX(0);
}

.solution-icon {
    width: 60px;
    height: 60px;
    background: var(--gradient-primary);
    border-radius: var(--border-radius);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--text-2xl);
    margin-bottom: var(--spacing-md);
}

.solution-title {
    font-size: var(--text-xl);
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
    color: var(--text-primary);
}

.solution-description {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-md);
    line-height: 1.6;
}

.solution-features {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.feature {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-size: var(--text-sm);
    color: var(--text-secondary);
}

.feature i {
    color: var(--accent-green);
    font-size: var(--text-xs);
}

/* ===== CONNECTIVITY SECTION ===== */
.connectivity {
    background: var(--primary-dark);
}

.connectivity-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xxl);
    align-items: center;
}

.connectivity-metrics {
    display: flex;
    gap: var(--spacing-lg);
    margin: var(--spacing-xl) 0;
    flex-wrap: wrap;
}

.metric {
    text-align: center;
    padding: var(--spacing-md);
    background: rgba(255, 255, 255, 0.05);
    border-radius: var(--border-radius);
    min-width: 100px;
}

.metric-value {
    font-size: var(--text-2xl);
    font-weight: 800;
    color: var(--text-highlight);
    font-family: var(--font-mono);
}

.metric-label {
    font-size: var(--text-sm);
    color: var(--text-secondary);
    margin-top: var(--spacing-xs);
}

.connectivity-features {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.feature-item {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-md);
}

.feature-icon {
    width: 40px;
    height: 40px;
    background: var(--gradient-primary);
    border-radius: var(--border-radius);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--text-base);
    flex-shrink: 0;
}

.feature-text h4 {
    font-size: var(--text-lg);
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-xs);
}

.feature-text p {
    color: var(--text-secondary);
    font-size: var(--text-sm);
    line-height: 1.6;
}

/* Network Diagram */
.network-diagram {
    position: relative;
    width: 300px;
    height: 300px;
    margin: 0 auto;
}

.network-center {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 80px;
    height: 80px;
    background: var(--gradient-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--text-2xl);
    box-shadow: var(--shadow-glow);
    z-index: 3;
}

.network-nodes {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
}

.node {
    position: absolute;
    top: 50%;
    left: 50%;
    width: 50px;
    height: 50px;
    background: var(--secondary-gray);
    border: 2px solid var(--accent-blue);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--text-lg);
    transform: translate(-50%, -50%) rotate(var(--angle)) translateY(-120px) rotate(calc(-1 * var(--angle)));
    transition: all var(--transition-normal);
}

.network-diagram:hover .node {
    transform: translate(-50%, -50%) rotate(var(--angle)) translateY(-140px) rotate(calc(-1 * var(--angle))) scale(1.1);
}

.network-connections {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 200px;
    height: 200px;
}

.connection {
    position: absolute;
    top: 50%;
    left: 50%;
    width: 100%;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--accent-blue), transparent);
    transform-origin: center;
}

.connection:nth-child(1) { transform: translate(-50%, -50%) rotate(0deg); }
.connection:nth-child(2) { transform: translate(-50%, -50%) rotate(90deg); }
.connection:nth-child(3) { transform: translate(-50%, -50%) rotate(180deg); }
.connection:nth-child(4) { transform: translate(-50%, -50%) rotate(270deg); }

/* ===== COST REDUCTION SECTION ===== */
.cost-reduction {
    background: var(--primary-gray);
}

.cost-calculator {
    background: var(--secondary-gray);
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-xl);
    margin-bottom: var(--spacing-xxl);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.calculator-header {
    text-align: center;
    margin-bottom: var(--spacing-xl);
}

.calculator-header h3 {
    font-size: var(--text-2xl);
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
}

.calculator-header p {
    color: var(--text-secondary);
}

.input-group {
    margin-bottom: var(--spacing-lg);
}

.input-group label {
    display: block;
    margin-bottom: var(--spacing-xs);
    color: var(--text-secondary);
    font-size: var(--text-sm);
    font-weight: 500;
}

.input-group input {
    width: 100%;
    padding: var(--spacing-md);
    background: var(--primary-dark);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: var(--border-radius);
    color: var(--text-primary);
    font-size: var(--text-lg);
    transition: all var(--transition-normal);
}

.input-group input:focus {
    outline: none;
    border-color: var(--accent-blue);
    box-shadow: 0 0 0 3px rgba(0, 212, 255, 0.1);
}

.savings-display {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: var(--spacing-md);
    margin-top: var(--spacing-xl);
}

.savings-item {
    text-align: center;
    padding: var(--spacing-md);
    background: var(--primary-dark);
    border-radius: var(--border-radius);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.savings-label {
    font-size: var(--text-sm);
    color: var(--text-secondary);
    margin-bottom: var(--spacing-xs);
}

.savings-value {
    font-size: var(--text-2xl);
    font-weight: 800;
    color: var(--accent-green);
    font-family: var(--font-mono);
}

.cost-benefits {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-xl);
}

.benefit-card {
    text-align: center;
    padding: var(--spacing-xl);
    background: var(--secondary-gray);
    border-radius: var(--border-radius-lg);
    border: 1px solid rgba(255, 255, 255, 0.1);
    transition: all var(--transition-normal);
}

.benefit-card:hover {
    transform: translateY(-5px);
    border-color: var(--accent-green);
    box-shadow: 0 0 30px rgba(16, 185, 129, 0.2);
}

.benefit-icon {
    width: 60px;
    height: 60px;
    background: var(--gradient-accent);
    border-radius: var(--border-radius);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--text-2xl);
    margin: 0 auto var(--spacing-md);
}

.benefit-card h4 {
    font-size: var(--text-lg);
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
}

.benefit-card p {
    color: var(--text-secondary);
    font-size: var(--text-sm);
    line-height: 1.6;
}

/* ===== ABOUT SECTION ===== */
.about {
    background: var(--primary-dark);
}

.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xxl);
    align-items: center;
}

.about-stats {
    display: flex;
    gap: var(--spacing-lg);
    margin: var(--spacing-xl) 0;
    flex-wrap: wrap;
}

.about-stat {
    text-align: center;
    padding: var(--spacing-md);
    background: rgba(255, 255, 255, 0.05);
    border-radius: var(--border-radius);
    min-width: 100px;
}

.about-cta {
    margin-top: var(--spacing-xl);
}

/* About Diagram */
.about-diagram {
    position: relative;
    width: 300px;
    height: 300px;
    margin: 0 auto;
}

.diagram-center {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 100px;
    height: 100px;
    background: var(--gradient-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--text-3xl);
    box-shadow: var(--shadow-glow);
    z-index: 3;
}

.diagram-arrows {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
}

.arrow {
    position: absolute;
    top: 50%;
    left: 50%;
    width: 60px;
    height: 3px;
    background: var(--accent-blue);
    transform-origin: left center;
    border-radius: 2px;
}

.arrow::after {
    content: '';
    position: absolute;
    right: 0;
    top: 50%;
    width: 0;
    height: 0;
    border-left: 8px solid var(--accent-blue);
    border-top: 4px solid transparent;
    border-bottom: 4px solid transparent;
    transform: translateY(-50%);
}

.arrow-1 { transform: translate(-50%, -50%) rotate(0deg); }
.arrow-2 { transform: translate(-50%, -50%) rotate(120deg); }
.arrow-3 { transform: translate(-50%, -50%) rotate(240deg); }

.diagram-items {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
}

.item {
    position: absolute;
    text-align: center;
    padding: var(--spacing-sm);
    background: var(--secondary-gray);
    border-radius: var(--border-radius);
    border: 1px solid rgba(255, 255, 255, 0.2);
    min-width: 80px;
}

.item i {
    display: block;
    font-size: var(--text-lg);
    color: var(--accent-blue);
    margin-bottom: var(--spacing-xs);
}

.item span {
    font-size: var(--text-sm);
    color: var(--text-secondary);
    font-weight: 500;
}

.item-1 { top: 10%; left: 50%; transform: translateX(-50%); }
.item-2 { bottom: 10%; left: 10%; }
.item-3 { bottom: 10%; right: 10%; }

/* ===== CONTACT SECTION ===== */
.contact {
    background: var(--primary-gray);
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xxl);
}

.contact-item {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-xl);
}

.contact-icon {
    width: 50px;
    height: 50px;
    background: var(--gradient-primary);
    border-radius: var(--border-radius);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--text-lg);
    flex-shrink: 0;
}

.contact-text h4 {
    font-size: var(--text-lg);
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-xs);
}

.contact-text p {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-xs);
}

.contact-text small {
    color: var(--text-muted);
    font-size: var(--text-xs);
}

/* Contact Form */
.contact-form {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.form-group {
    position: relative;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: var(--spacing-md);
    background: var(--primary-dark);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: var(--border-radius);
    color: var(--text-primary);
    font-size: var(--text-base);
    transition: all var(--transition-normal);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--accent-blue);
    box-shadow: 0 0 0 3px rgba(0, 212, 255, 0.1);
}

.form-group label {
    position: absolute;
    top: var(--spacing-md);
    left: var(--spacing-md);
    color: var(--text-secondary);
    font-size: var(--text-base);
    transition: all var(--transition-normal);
    pointer-events: none;
}

.form-group input:focus ~ label,
.form-group input:not(:placeholder-shown) ~ label,
.form-group select:focus ~ label,
.form-group select:not([value=""]) ~ label,
.form-group textarea:focus ~ label,
.form-group textarea:not(:placeholder-shown) ~ label {
    top: -10px;
    left: var(--spacing-sm);
    font-size: var(--text-sm);
    color: var(--text-highlight);
    background: var(--primary-dark);
    padding: 0 var(--spacing-xs);
}

/* ===== FOOTER ===== */
.footer {
    background: var(--primary-darker);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding: var(--spacing-xxl) 0 var(--spacing-lg);
}

.footer-content {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: var(--spacing-xxl);
    margin-bottom: var(--spacing-xl);
}

.footer-brand p {
    color: var(--text-secondary);
    margin: var(--spacing-md) 0;
    line-height: 1.6;
}

.social-links {
    display: flex;
    gap: var(--spacing-sm);
}

.social-link {
    width: 40px;
    height: 40px;
    background: var(--secondary-gray);
    border-radius: var(--border-radius);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
    text-decoration: none;
    transition: all var(--transition-normal);
}

.social-link:hover {
    background: var(--gradient-primary);
    color: var(--text-primary);
    transform: translateY(-2px);
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: var(--spacing-xl);
}

.footer-column h4 {
    font-size: var(--text-lg);
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-md);
}

.footer-column ul {
    list-style: none;
}

.footer-column li {
    margin-bottom: var(--spacing-xs);
}

.footer-column a {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: var(--text-sm);
    transition: color var(--transition-normal);
}

.footer-column a:hover {
    color: var(--text-highlight);
}

.footer-bottom {
    text-align: center;
    padding-top: var(--spacing-xl);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    color: var(--text-muted);
    font-size: var(--text-sm);
}

.footer-bottom p {
    margin-bottom: var(--spacing-xs);
}

/* ===== ANIMAÇÕES GLOBAIS ===== */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeInLeft {
    from {
        opacity: 0;
        transform: translateX(-30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

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

[data-aos="fade-up"] {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.6s ease;
}

[data-aos="fade-up"].aos-animate {
    opacity: 1;
    transform: translateY(0);
}

/* ===== UTILITÁRIOS ===== */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.mb-1 { margin-bottom: var(--spacing-xs); }
.mb-2 { margin-bottom: var(--spacing-sm); }
.mb-3 { margin-bottom: var(--spacing-md); }
.mb-4 { margin-bottom: var(--spacing-lg); }
.mb-5 { margin-bottom: var(--spacing-xl); }

.hidden { display: none; }
.visible { display: block; }

.opacity-0 { opacity: 0; }
.opacity-50 { opacity: 0.5; }
.opacity-100 { opacity: 1; }

/* ===== RESPONSIVIDADE BÁSICA ===== */
@media (max-width: 768px) {
    .nav-menu {
        display: none;
    }
    
    .nav-toggle {
        display: flex;
    }
    
    .hero-actions {
        flex-direction: column;
        align-items: center;
    }
    
    .hero-stats {
        flex-direction: column;
        align-items: center;
    }
    
    .solutions-grid {
        grid-template-columns: 1fr;
    }
    
    .connectivity-content,
    .about-content,
    .contact-content {
        grid-template-columns: 1fr;
        gap: var(--spacing-xl);
    }
    
    .connectivity-metrics,
    .about-stats {
        justify-content: center;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .footer-links {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .network-diagram,
    .about-diagram {
        width: 250px;
        height: 250px;
    }
    
    .savings-display {
        grid-template-columns: 1fr;
    }
}