/* ============================================
   DSW DATA WEB SOLUTIONS - LANDING PAGE
   Arquivo de estilos principal
   
   ÍNDICE:
   1. Variáveis CSS (Custom Properties)
   2. Reset e Base
   3. Tipografia
   4. Layout e Container
   5. Header e Navegação
   6. Hero Section
   7. Seções (estilo padrão)
   8. Cards de Serviços
   9. Portfólio
   10. Contato
   11. Footer
   12. Componentes Utilitários
   13. Animações
   14. Media Queries (Responsivo)
============================================ */

/* ============================================
   1. VARIÁVEIS CSS (Custom Properties)
   Define todas as cores, fontes e valores reutilizáveis
   Facilita manutenção e alterações globais
============================================ */
:root {
    /* ----- Cores do Gradiente Principal (baseado no cartão) ----- */
    --color-primary: #667eea;        /* Roxo principal */
    --color-primary-light: #7c8ff7;  /* Roxo claro */
    --color-primary-dark: #5468d4;   /* Roxo escuro */
    
    /* ----- Cores Secundárias (azul do cartão) ----- */
    --color-secondary: #247BA0;      /* Azul médio */
    --color-secondary-light: #AAC7d8;/* Azul claro */
    --color-secondary-dark: #1a5c7a; /* Azul escuro */
    
    /* ----- Cor do WhatsApp (uso específico) ----- */
    --color-whatsapp: #25D366;
    --color-whatsapp-dark: #128C7E;
    
    /* ----- Cores Neutras ----- */
    --color-white: #ffffff;
    --color-black: #0a0a1f;
    --color-gray-50: #f8fafc;
    --color-gray-100: #f1f5f9;
    --color-gray-200: #e2e8f0;
    --color-gray-300: #cbd5e1;
    --color-gray-400: #94a3b8;
    --color-gray-500: #64748b;
    --color-gray-600: #475569;
    --color-gray-700: #334155;
    --color-gray-800: #1e293b;
    --color-gray-900: #0f172a;
    
    /* ----- Gradientes ----- */
    --gradient-primary: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
    --gradient-primary-hover: linear-gradient(135deg, var(--color-primary-dark) 0%, var(--color-secondary-dark) 100%);
    --gradient-text: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
    --gradient-card: linear-gradient(180deg, var(--color-white) 0%, var(--color-gray-50) 100%);
    
    /* ----- Tipografia ----- */
    --font-display: 'Orbitron', 'Exo', sans-serif;  /* Fonte para títulos (igual ao cartão) */
    --font-body: 'Poppins', sans-serif;             /* Fonte para textos */
    
    /* Tamanhos de fonte fluidos (clamp: min, preferido, max) */
    --text-xs: clamp(0.75rem, 0.7rem + 0.25vw, 0.875rem);
    --text-sm: clamp(0.875rem, 0.8rem + 0.35vw, 1rem);
    --text-base: clamp(1rem, 0.9rem + 0.5vw, 1.125rem);
    --text-lg: clamp(1.125rem, 1rem + 0.6vw, 1.25rem);
    --text-xl: clamp(1.25rem, 1.1rem + 0.75vw, 1.5rem);
    --text-2xl: clamp(1.5rem, 1.3rem + 1vw, 2rem);
    --text-3xl: clamp(1.875rem, 1.5rem + 1.5vw, 2.5rem);
    --text-4xl: clamp(2.25rem, 1.8rem + 2vw, 3.5rem);
    --text-5xl: clamp(3rem, 2.2rem + 3vw, 4.5rem);
    
    /* ----- Espaçamentos ----- */
    --space-xs: 0.25rem;   /* 4px */
    --space-sm: 0.5rem;    /* 8px */
    --space-md: 1rem;      /* 16px */
    --space-lg: 1.5rem;    /* 24px */
    --space-xl: 2rem;      /* 32px */
    --space-2xl: 3rem;     /* 48px */
    --space-3xl: 4rem;     /* 64px */
    --space-4xl: 6rem;     /* 96px */
    
    /* ----- Bordas e Sombras ----- */
    --radius-sm: 0.375rem;   /* 6px */
    --radius-md: 0.5rem;     /* 8px */
    --radius-lg: 0.75rem;    /* 12px */
    --radius-xl: 1rem;       /* 16px */
    --radius-2xl: 1.5rem;    /* 24px */
    --radius-full: 9999px;   /* Circular */
    
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-md: 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);
    --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
    --shadow-2xl: 0 25px 50px -12px rgb(0 0 0 / 0.25);
    --shadow-glow: 0 0 40px rgba(102, 126, 234, 0.3);
    
    /* ----- Transições ----- */
    --transition-fast: 150ms ease;
    --transition-base: 250ms ease;
    --transition-slow: 350ms ease;
    --transition-spring: 400ms cubic-bezier(0.34, 1.56, 0.64, 1);
    
    /* ----- Z-index ----- */
    --z-dropdown: 100;
    --z-sticky: 200;
    --z-fixed: 300;
    --z-modal: 400;
    --z-tooltip: 500;
    
    /* ----- Largura do container ----- */
    --container-max: 1200px;
    --container-padding: 1.5rem;
}

/* ============================================
   2. RESET E BASE
   Normaliza estilos entre navegadores
   Define comportamentos padrão
============================================ */

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

/* Comportamento de scroll suave */
html {
    scroll-behavior: smooth;
    /* Previne ajuste de fonte no iOS */
    -webkit-text-size-adjust: 100%;
}

/* Corpo da página */
body {
    font-family: var(--font-body);
    font-size: var(--text-base);
    line-height: 1.6;
    color: var(--color-gray-700);
    background-color: var(--color-white);
    /* Melhora renderização de fontes */
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    /* Previne scroll horizontal */
    overflow-x: hidden;
}

/* Remove estilos padrão de listas */
ul, ol {
    list-style: none;
}

/* Links sem sublinhado por padrão */
a {
    text-decoration: none;
    color: inherit;
}

/* Imagens responsivas */
img {
    max-width: 100%;
    height: auto;
    display: block;
}

/* Botões e inputs herdam fonte */
button, input, textarea, select {
    font-family: inherit;
    font-size: inherit;
}

/* Remove outline padrão (custom focus será adicionado) */
button:focus-visible,
a:focus-visible,
input:focus-visible,
textarea:focus-visible,
select:focus-visible {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}

/* ============================================
   3. TIPOGRAFIA
   Estilos para headings e textos
============================================ */

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-display);
    font-weight: 700;
    line-height: 1.2;
    color: var(--color-gray-900);
}

/* Texto com gradiente (classe utilitária) */
.text-gradient {
    background: var(--gradient-text);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* ============================================
   4. LAYOUT E CONTAINER
   Sistema de grid e container responsivo
============================================ */

.container {
    width: 100%;
    max-width: var(--container-max);
    margin-inline: auto;
    padding-inline: var(--container-padding);
}

/* ============================================
   5. CANVAS DE PARTÍCULAS
   Posicionamento do background interativo
============================================ */

#particles-canvas {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    pointer-events: none;
}

/* ============================================
   6. HEADER E NAVEGAÇÃO
   Barra de navegação fixa com efeito glassmorphism
============================================ */

.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: var(--z-fixed);
    transition: var(--transition-base);
}

/* Estado do header com scroll (classe adicionada via JS) */
.header--scrolled {
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    box-shadow: var(--shadow-md);
}

.nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 80px;
}

/* Logo */
.nav__logo {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    transition: var(--transition-base);
}

.nav__logo:hover {
    transform: scale(1.02);
}

.nav__logo-icon {
    width: 50px;
    height: 35px;
    color: var(--color-primary);
}

.nav__logo-text {
    font-family: var(--font-display);
    font-size: var(--text-xl);
    font-weight: 700;
    color: var(--color-gray-900);
    letter-spacing: 2px;
}

.nav__logo-accent {
    font-size: var(--text-sm);
    font-weight: 400;
    color: var(--color-gray-500);
    letter-spacing: 3px;
    margin-left: var(--space-xs);
}

/* Menu de navegação */
.nav__menu {
    display: flex;
    align-items: center;
    gap: var(--space-xl);
}

.nav__link {
    position: relative;
    font-size: var(--text-sm);
    font-weight: 500;
    color: var(--color-gray-600);
    padding: var(--space-sm) 0;
    transition: var(--transition-base);
}

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

.nav__link:hover,
.nav__link.active {
    color: var(--color-primary);
}

.nav__link:hover::after,
.nav__link.active::after {
    width: 100%;
}

/* Botão hamburguer (mobile) */
.nav__toggle {
    display: none;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    width: 30px;
    height: 30px;
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 0;
}

.nav__toggle-bar {
    width: 100%;
    height: 2px;
    background: var(--color-gray-700);
    border-radius: 2px;
    transition: var(--transition-base);
}

/* ============================================
   7. HERO SECTION
   Seção principal de impacto
============================================ */

.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: 80px; /* Altura do header */
}

.hero__container {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    padding-block: var(--space-3xl);
}

/* Badge de disponibilidade */
.hero__badge {
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-sm) var(--space-lg);
    background: rgba(102, 126, 234, 0.1);
    border: 1px solid rgba(102, 126, 234, 0.2);
    border-radius: var(--radius-full);
    font-size: var(--text-sm);
    color: var(--color-primary);
    margin-bottom: var(--space-xl);
    animation: fadeInUp 0.6s ease-out;
}

.hero__badge-dot {
    width: 8px;
    height: 8px;
    background: var(--color-primary);
    border-radius: 50%;
    animation: pulse 2s infinite;
}

/* Título principal */
.hero__title {
    font-size: var(--text-5xl);
    font-weight: 800;
    line-height: 1.1;
    max-width: 900px;
    margin-bottom: var(--space-xl);
    animation: fadeInUp 0.6s ease-out 0.1s both;
}

.hero__title-gradient {
    display: block;
    background: var(--gradient-text);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* Descrição */
.hero__description {
    font-size: var(--text-lg);
    color: var(--color-gray-600);
    max-width: 600px;
    margin-bottom: var(--space-2xl);
    animation: fadeInUp 0.6s ease-out 0.2s both;
}

/* Botões */
.hero__buttons {
    display: flex;
    gap: var(--space-md);
    margin-bottom: var(--space-3xl);
    animation: fadeInUp 0.6s ease-out 0.3s both;
}

/* Tecnologias */
.hero__tech {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-md);
    animation: fadeInUp 0.6s ease-out 0.4s both;
}

.hero__tech-label {
    font-size: var(--text-sm);
    color: var(--color-gray-500);
    text-transform: uppercase;
    letter-spacing: 2px;
}

.hero__tech-stack {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--space-sm);
}

.hero__tech-item {
    padding: var(--space-xs) var(--space-md);
    background: var(--color-gray-100);
    border-radius: var(--radius-full);
    font-size: var(--text-xs);
    color: var(--color-gray-600);
    font-weight: 500;
    transition: var(--transition-base);
}

.hero__tech-item:hover {
    background: var(--gradient-primary);
    color: var(--color-white);
}

/* Scroll indicator */
.hero__scroll {
    position: absolute;
    bottom: var(--space-2xl);
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-sm);
    animation: fadeInUp 0.6s ease-out 0.5s both;
}

.hero__scroll-mouse {
    width: 24px;
    height: 36px;
    border: 2px solid var(--color-gray-400);
    border-radius: 12px;
    position: relative;
}

.hero__scroll-wheel {
    width: 4px;
    height: 8px;
    background: var(--color-primary);
    border-radius: 2px;
    position: absolute;
    top: 6px;
    left: 50%;
    transform: translateX(-50%);
    animation: scrollWheel 2s infinite;
}

.hero__scroll-text {
    font-size: var(--text-xs);
    color: var(--color-gray-400);
    text-transform: uppercase;
    letter-spacing: 2px;
}

/* ============================================
   8. BOTÕES (Componente reutilizável)
============================================ */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    padding: var(--space-md) var(--space-xl);
    font-size: var(--text-sm);
    font-weight: 600;
    border-radius: var(--radius-lg);
    border: none;
    cursor: pointer;
    transition: var(--transition-base);
    text-decoration: none;
}

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

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

.btn--secondary {
    background: var(--color-white);
    color: var(--color-gray-700);
    border: 2px solid var(--color-gray-200);
}

.btn--secondary:hover {
    border-color: var(--color-primary);
    color: var(--color-primary);
}

.btn--full {
    width: 100%;
}

.btn__icon {
    width: 18px;
    height: 18px;
    transition: var(--transition-base);
}

.btn:hover .btn__icon {
    transform: translateX(4px);
}

/* ============================================
   9. SEÇÕES (Estilo padrão)
============================================ */

section {
    padding-block: var(--space-4xl);
}

.section__header {
    text-align: center;
    max-width: 700px;
    margin-inline: auto;
    margin-bottom: var(--space-3xl);
}

.section__badge {
    display: inline-block;
    padding: var(--space-xs) var(--space-md);
    background: rgba(102, 126, 234, 0.1);
    border-radius: var(--radius-full);
    font-size: var(--text-xs);
    font-weight: 600;
    color: var(--color-primary);
    text-transform: uppercase;
    letter-spacing: 2px;
    margin-bottom: var(--space-md);
}

.section__title {
    font-size: var(--text-4xl);
    margin-bottom: var(--space-md);
}

.section__description {
    font-size: var(--text-lg);
    color: var(--color-gray-600);
}

/* ============================================
   10. CARDS DE SERVIÇOS
============================================ */

.services {
    background: var(--color-gray-50);
}

.services__grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--space-xl);
}

.service-card {
    position: relative;
    background: var(--color-white);
    padding: var(--space-2xl);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--color-gray-100);
    transition: var(--transition-base);
}

.service-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
}

/* Card em destaque */
.service-card--featured {
    background: var(--gradient-primary);
    border: none;
}

.service-card--featured .service-card__icon {
    background: rgba(255, 255, 255, 0.2);
    color: var(--color-white);
}

.service-card--featured .service-card__title,
.service-card--featured .service-card__description,
.service-card--featured .service-card__features li {
    color: var(--color-white);
}

.service-card--featured .service-card__features li::before {
    color: var(--color-white);
}

.service-card__badge {
    position: absolute;
    top: var(--space-md);
    right: var(--space-md);
    padding: var(--space-xs) var(--space-sm);
    background: rgba(255, 255, 255, 0.3);
    border-radius: var(--radius-full);
    font-size: var(--text-xs);
    font-weight: 600;
    color: var(--color-white);
}

.service-card__icon {
    width: 64px;
    height: 64px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(102, 126, 234, 0.1);
    border-radius: var(--radius-lg);
    margin-bottom: var(--space-lg);
    transition: var(--transition-base);
}

.service-card__icon svg {
    width: 36px;
    height: 36px;
    color: var(--color-primary);
}

.service-card:hover .service-card__icon {
    transform: scale(1.1);
}

.service-card__title {
    font-family: var(--font-display);
    font-size: var(--text-xl);
    margin-bottom: var(--space-sm);
}

.service-card__description {
    font-size: var(--text-sm);
    color: var(--color-gray-600);
    margin-bottom: var(--space-lg);
}

.service-card__features {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.service-card__features li {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    font-size: var(--text-sm);
    color: var(--color-gray-600);
}

.service-card__features li::before {
    content: '✓';
    color: var(--color-primary);
    font-weight: 700;
}

/* ============================================
   11. PORTFÓLIO
============================================ */

.portfolio__filters {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--space-sm);
    margin-bottom: var(--space-2xl);
}

.portfolio__filter {
    padding: var(--space-sm) var(--space-lg);
    background: var(--color-white);
    border: 2px solid var(--color-gray-200);
    border-radius: var(--radius-full);
    font-size: var(--text-sm);
    font-weight: 500;
    color: var(--color-gray-600);
    cursor: pointer;
    transition: var(--transition-base);
}

.portfolio__filter:hover,
.portfolio__filter.active {
    background: var(--gradient-primary);
    border-color: transparent;
    color: var(--color-white);
}

.portfolio__grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
    gap: var(--space-xl);
}

/* Cards de projeto */
.portfolio-card {
    background: var(--color-white);
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--color-gray-100);
    transition: var(--transition-base);
}

.portfolio-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
}

/* Card escondido (para filtro) */
.portfolio-card.hidden {
    display: none;
}

.portfolio-card__image {
    position: relative;
    aspect-ratio: 16 / 10;
    overflow: hidden;
    background: var(--gradient-primary);
}

.portfolio-card__placeholder {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #667eea 0%, #247BA0 100%);
    color: rgba(255, 255, 255, 0.7);
}

.portfolio-card__placeholder svg {
    width: 70%;
    height: auto;
}

/* Variações de cor para os placeholders */
.portfolio-card__placeholder--landing {
    background: linear-gradient(135deg, #7c8ff7 0%, #AAC7d8 100%);
}

.portfolio-card__placeholder--ecommerce {
    background: linear-gradient(135deg, #247BA0 0%, #1a5c7a 100%);
}

.portfolio-card__placeholder--app {
    background: linear-gradient(135deg, #5468d4 0%, #667eea 100%);
}

.portfolio-card__placeholder--dashboard {
    background: linear-gradient(135deg, #768A96 0%, #247BA0 100%);
}

.portfolio-card__placeholder--landing2 {
    background: linear-gradient(135deg, #667eea 0%, #768A96 100%);
}

/* Placeholders Power BI */
.portfolio-card__placeholder--powerbi {
    background: linear-gradient(135deg, #F2C811 0%, #E8A202 50%, #DE8E04 100%);
}

.portfolio-card__placeholder--powerbi2 {
    background: linear-gradient(135deg, #E8A202 0%, #667eea 100%);
}

/* Placeholders Excel */
.portfolio-card__placeholder--excel {
    background: linear-gradient(135deg, #217346 0%, #185C37 100%);
}

.portfolio-card__placeholder--excel2 {
    background: linear-gradient(135deg, #185C37 0%, #247BA0 100%);
}

.portfolio-card__overlay {
    position: absolute;
    inset: 0;
    background: rgba(102, 126, 234, 0.9);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: var(--transition-base);
}

.portfolio-card:hover .portfolio-card__overlay {
    opacity: 1;
}

.portfolio-card__link {
    width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-white);
    border-radius: 50%;
    color: var(--color-primary);
    transform: scale(0);
    transition: var(--transition-spring);
}

.portfolio-card:hover .portfolio-card__link {
    transform: scale(1);
}

.portfolio-card__link svg {
    width: 24px;
    height: 24px;
}

.portfolio-card__content {
    padding: var(--space-lg);
}

.portfolio-card__category {
    display: inline-block;
    padding: var(--space-xs) var(--space-sm);
    background: rgba(102, 126, 234, 0.1);
    border-radius: var(--radius-sm);
    font-size: var(--text-xs);
    font-weight: 600;
    color: var(--color-primary);
    margin-bottom: var(--space-sm);
}

.portfolio-card__title {
    font-family: var(--font-display);
    font-size: var(--text-lg);
    margin-bottom: var(--space-xs);
}

.portfolio-card__description {
    font-size: var(--text-sm);
    color: var(--color-gray-600);
    margin-bottom: var(--space-md);
}

.portfolio-card__tech {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-xs);
}

.portfolio-card__tech span {
    padding: var(--space-xs) var(--space-sm);
    background: var(--color-gray-100);
    border-radius: var(--radius-sm);
    font-size: var(--text-xs);
    color: var(--color-gray-600);
}

/* ============================================
   12. CONTATO
============================================ */

.contact {
    background: var(--color-gray-50);
}

.contact__wrapper {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: var(--space-3xl);
    align-items: start;
}

.contact__info {
    display: flex;
    flex-direction: column;
    gap: var(--space-lg);
}

/* Cards de contato */
.contact-card {
    display: flex;
    align-items: center;
    gap: var(--space-lg);
    padding: var(--space-lg);
    background: var(--color-white);
    border-radius: var(--radius-xl);
    border: 1px solid var(--color-gray-100);
    transition: var(--transition-base);
    text-decoration: none;
}

.contact-card:hover {
    transform: translateX(8px);
    box-shadow: var(--shadow-lg);
}

.contact-card__icon {
    width: 56px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(102, 126, 234, 0.1);
    border-radius: var(--radius-lg);
    flex-shrink: 0;
}

.contact-card__icon svg {
    width: 28px;
    height: 28px;
    color: var(--color-primary);
}

/* WhatsApp card */
.contact-card--whatsapp .contact-card__icon {
    background: rgba(37, 211, 102, 0.1);
}

.contact-card--whatsapp .contact-card__icon svg {
    color: var(--color-whatsapp);
}

.contact-card--whatsapp:hover {
    border-color: var(--color-whatsapp);
}

/* Email card */
.contact-card--email .contact-card__icon {
    background: rgba(102, 126, 234, 0.1);
}

.contact-card--email:hover {
    border-color: var(--color-primary);
}

.contact-card__content {
    flex: 1;
}

.contact-card__title {
    font-family: var(--font-display);
    font-size: var(--text-base);
    font-weight: 600;
    color: var(--color-gray-900);
    margin-bottom: var(--space-xs);
}

.contact-card__text {
    font-size: var(--text-sm);
    color: var(--color-gray-600);
}

.contact-card__action {
    font-size: var(--text-xs);
    color: var(--color-primary);
    font-weight: 500;
    margin-top: var(--space-xs);
    display: block;
}

/* Formulário */
.contact__form {
    background: var(--color-white);
    padding: var(--space-2xl);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-lg);
}

.form__group {
    margin-bottom: var(--space-lg);
}

.form__label {
    display: block;
    font-size: var(--text-sm);
    font-weight: 500;
    color: var(--color-gray-700);
    margin-bottom: var(--space-sm);
}

.form__input {
    width: 100%;
    padding: var(--space-md);
    background: var(--color-gray-50);
    border: 2px solid var(--color-gray-200);
    border-radius: var(--radius-md);
    font-size: var(--text-base);
    color: var(--color-gray-800);
    transition: var(--transition-base);
}

.form__input::placeholder {
    color: var(--color-gray-400);
}

.form__input:focus {
    outline: none;
    border-color: var(--color-primary);
    background: var(--color-white);
    box-shadow: 0 0 0 4px rgba(102, 126, 234, 0.1);
}

.form__select {
    cursor: pointer;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%23475569' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 1rem center;
}

.form__textarea {
    resize: vertical;
    min-height: 120px;
}

/* ============================================
   13. FOOTER
============================================ */

.footer {
    background: var(--color-gray-900);
    color: var(--color-gray-400);
    padding-top: var(--space-3xl);
}

.footer__content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: var(--space-2xl);
    padding-bottom: var(--space-2xl);
}

.footer__brand {
    max-width: 300px;
}

.footer__logo {
    display: inline-block;
    margin-bottom: var(--space-md);
}

.footer__logo-text {
    font-family: var(--font-display);
    font-size: var(--text-2xl);
    font-weight: 700;
    color: var(--color-white);
    letter-spacing: 2px;
}

.footer__logo-accent {
    font-size: var(--text-sm);
    font-weight: 400;
    color: var(--color-gray-500);
    letter-spacing: 3px;
    margin-left: var(--space-xs);
}

.footer__description {
    font-size: var(--text-sm);
    line-height: 1.7;
}

.footer__title {
    font-family: var(--font-display);
    font-size: var(--text-base);
    font-weight: 600;
    color: var(--color-white);
    margin-bottom: var(--space-lg);
    letter-spacing: 1px;
}

.footer__nav {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.footer__nav a {
    font-size: var(--text-sm);
    color: var(--color-gray-400);
    transition: var(--transition-base);
}

.footer__nav a:hover {
    color: var(--color-primary);
    padding-left: var(--space-sm);
}

.footer__contact p {
    font-size: var(--text-sm);
    margin-bottom: var(--space-sm);
}

.footer__divider {
    height: 1px;
    background: var(--color-gray-700);
    margin-bottom: var(--space-lg);
}

.footer__bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-bottom: var(--space-lg);
}

.footer__copyright {
    font-size: var(--text-sm);
}

.footer__made-with {
    font-size: var(--text-sm);
}

.footer__heart {
    color: #ef4444;
    animation: heartbeat 1.5s infinite;
}

/* ============================================
   14. BOTÃO WHATSAPP FLUTUANTE
============================================ */

.whatsapp-float {
    position: fixed;
    bottom: var(--space-xl);
    right: var(--space-xl);
    width: 60px;
    height: 60px;
    background: var(--color-whatsapp);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-white);
    box-shadow: var(--shadow-lg), 0 0 20px rgba(37, 211, 102, 0.4);
    z-index: var(--z-fixed);
    transition: var(--transition-base);
}

.whatsapp-float:hover {
    background: var(--color-whatsapp-dark);
    transform: scale(1.1);
}

.whatsapp-float svg {
    width: 32px;
    height: 32px;
}

.whatsapp-float__tooltip {
    position: absolute;
    right: 70px;
    background: var(--color-gray-900);
    color: var(--color-white);
    padding: var(--space-sm) var(--space-md);
    border-radius: var(--radius-md);
    font-size: var(--text-sm);
    white-space: nowrap;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition-base);
}

.whatsapp-float:hover .whatsapp-float__tooltip {
    opacity: 1;
    visibility: visible;
}

/* ============================================
   15. BOTÃO VOLTAR AO TOPO
============================================ */

.back-to-top {
    position: fixed;
    bottom: var(--space-xl);
    right: calc(var(--space-xl) + 80px);
    width: 48px;
    height: 48px;
    background: var(--color-white);
    border: 2px solid var(--color-gray-200);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-gray-600);
    cursor: pointer;
    z-index: var(--z-fixed);
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    transition: var(--transition-base);
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.back-to-top:hover {
    background: var(--gradient-primary);
    border-color: transparent;
    color: var(--color-white);
}

.back-to-top svg {
    width: 24px;
    height: 24px;
}

/* ============================================
   16. ANIMAÇÕES
============================================ */

/* Fade in from bottom */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Pulse para o dot de disponibilidade */
@keyframes pulse {
    0%, 100% {
        opacity: 1;
        transform: scale(1);
    }
    50% {
        opacity: 0.5;
        transform: scale(1.5);
    }
}

/* Scroll wheel animation */
@keyframes scrollWheel {
    0% {
        opacity: 1;
        transform: translateX(-50%) translateY(0);
    }
    100% {
        opacity: 0;
        transform: translateX(-50%) translateY(10px);
    }
}

/* Heartbeat para o coração */
@keyframes heartbeat {
    0%, 100% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.2);
    }
}

/* Animação de entrada para elementos */
.animate-on-scroll {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.animate-on-scroll.visible {
    opacity: 1;
    transform: translateY(0);
}

/* ============================================
   17. MEDIA QUERIES (Responsivo)
============================================ */

/* Tablets e telas menores */
@media screen and (max-width: 1024px) {
    .footer__content {
        grid-template-columns: 1fr 1fr;
        gap: var(--space-2xl);
    }
    
    .contact__wrapper {
        grid-template-columns: 1fr;
    }
}

/* Mobile landscape e tablets pequenos */
@media screen and (max-width: 768px) {
    /* Navegação mobile */
    .nav__menu {
        position: fixed;
        top: 0;
        right: -100%;
        width: 100%;
        height: 100vh;
        background: var(--color-white);
        flex-direction: column;
        justify-content: center;
        gap: var(--space-2xl);
        transition: var(--transition-slow);
        z-index: var(--z-modal);
    }
    
    .nav__menu.active {
        right: 0;
    }
    
    .nav__link {
        font-size: var(--text-2xl);
    }
    
    .nav__toggle {
        display: flex;
        z-index: calc(var(--z-modal) + 1);
    }
    
    /* Transforma hamburguer em X quando ativo */
    .nav__toggle.active .nav__toggle-bar:nth-child(1) {
        transform: translateY(7px) rotate(45deg);
    }
    
    .nav__toggle.active .nav__toggle-bar:nth-child(2) {
        opacity: 0;
    }
    
    .nav__toggle.active .nav__toggle-bar:nth-child(3) {
        transform: translateY(-7px) rotate(-45deg);
    }
    
    /* Hero ajustes */
    .hero__buttons {
        flex-direction: column;
        width: 100%;
        max-width: 300px;
    }
    
    .hero__scroll {
        display: none;
    }
    
    /* Portfolio grid */
    .portfolio__grid {
        grid-template-columns: 1fr;
    }
    
    /* Footer */
    .footer__content {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .footer__brand {
        max-width: none;
    }
    
    .footer__nav a:hover {
        padding-left: 0;
    }
    
    .footer__bottom {
        flex-direction: column;
        gap: var(--space-md);
    }
    
    /* Botões flutuantes */
    .whatsapp-float {
        width: 50px;
        height: 50px;
        right: var(--space-md);
        bottom: var(--space-md);
    }
    
    .whatsapp-float svg {
        width: 26px;
        height: 26px;
    }
    
    .whatsapp-float__tooltip {
        display: none;
    }
    
    .back-to-top {
        right: calc(var(--space-md) + 60px);
        bottom: var(--space-md);
        width: 42px;
        height: 42px;
    }
}

/* Mobile portrait */
@media screen and (max-width: 480px) {
    :root {
        --container-padding: 1rem;
    }
    
    .services__grid {
        grid-template-columns: 1fr;
    }
    
    .portfolio__filters {
        gap: var(--space-xs);
    }
    
    .portfolio__filter {
        padding: var(--space-xs) var(--space-md);
        font-size: var(--text-xs);
    }
    
    .contact__form {
        padding: var(--space-lg);
    }
}

/* ============================================
   18. UTILITÁRIOS DE ACESSIBILIDADE
============================================ */

/* Skip link para navegação por teclado */
.skip-link {
    position: absolute;
    top: -40px;
    left: 0;
    background: var(--color-primary);
    color: var(--color-white);
    padding: var(--space-sm) var(--space-md);
    z-index: var(--z-tooltip);
    transition: var(--transition-fast);
}

.skip-link:focus {
    top: 0;
}

/* Reduce motion para acessibilidade */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
}