/* Expert Energy - Sistema de Design Moderno */

/* ==================== VARIÁVEIS DE COR ==================== */
:root {
    /* Cores Primárias - Azul Moderno */
    --primary-blue: #0066CC;
    --primary-dark: #004C99;
    --primary-light: #3399FF;
    --accent-blue: #00A3FF;
    
    /* Cores de Fundo - Modo Claro */
    --bg-primary: #FFFFFF;
    --bg-secondary: #F8FAFB;
    --bg-tertiary: #EBF5FF;
    --bg-card: #FFFFFF;
    
    /* Cores de Texto - Modo Claro */
    --text-primary: #1A202C;
    --text-secondary: #4A5568;
    --text-tertiary: #718096;
    --text-white: #FFFFFF;
    
    /* Cores de Borda */
    --border-color: #E2E8F0;
    --border-light: #F0F4F8;
    
    /* Gradientes */
    --gradient-primary: linear-gradient(135deg, #0066CC 0%, #3399FF 100%);
    --gradient-secondary: linear-gradient(135deg, #004C99 0%, #0066CC 100%);
    --gradient-hero: linear-gradient(135deg, rgba(0, 102, 204, 0.95) 0%, rgba(0, 76, 153, 0.95) 100%);
    
    /* Sombras */
    --shadow-sm: 0 2px 4px rgba(0, 102, 204, 0.08);
    --shadow-md: 0 4px 12px rgba(0, 102, 204, 0.12);
    --shadow-lg: 0 8px 24px rgba(0, 102, 204, 0.15);
    --shadow-xl: 0 12px 40px rgba(0, 102, 204, 0.2);
    
    /* Transições */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
}

/* Modo Escuro */
[data-theme="dark"] {
    --bg-primary: #0F1419;
    --bg-secondary: #1A1F29;
    --bg-tertiary: #252D3A;
    --bg-card: #1E2735;
    
    --text-primary: #F7FAFC;
    --text-secondary: #CBD5E0;
    --text-tertiary: #A0AEC0;
    
    --border-color: #2D3748;
    --border-light: #374151;
    
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.5);
    --shadow-xl: 0 12px 40px rgba(0, 0, 0, 0.6);
}

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

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

body {
    font-family: 'Inter', 'Segoe UI', system-ui, -apple-system, sans-serif;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    transition: background-color var(--transition-normal), color var(--transition-normal);
    overflow-x: hidden;
}

/* ==================== TIPOGRAFIA ==================== */
h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.2;
    color: var(--text-primary);
}

h1 {
    font-size: clamp(2.5rem, 5vw, 4rem);
    margin-bottom: 1.5rem;
}

h2 {
    font-size: clamp(2rem, 4vw, 3rem);
    margin-bottom: 1.25rem;
}

h3 {
    font-size: clamp(1.5rem, 3vw, 2rem);
    margin-bottom: 1rem;
}

p {
    font-size: 1.125rem;
    color: var(--text-secondary);
    margin-bottom: 1rem;
    line-height: 1.8;
}

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

/* ==================== HEADER E NAVEGAÇÃO ==================== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: var(--bg-primary);
    border-bottom: 1px solid var(--border-color);
    padding: 1rem 0;
    z-index: 1000;
    transition: all var(--transition-normal);
    box-shadow: var(--shadow-sm);
}

.header.scrolled {
    padding: 0.5rem 0;
    box-shadow: var(--shadow-md);
}

/* Header Mobile - Menor */
@media (max-width: 768px) {
    .header {
        padding: 0.5rem 0;
    }
    
    .header.scrolled {
        padding: 0.4rem 0;
    }
    
    .nav-container {
        padding: 0 1rem;
    }
    
    .logo {
        font-size: 1.1rem;
    }
    
    .logo-icon {
        width: 36px;
        height: 36px;
        font-size: 1.1rem;
    }
}

@media (max-width: 480px) {
    .header {
        padding: 0.4rem 0;
    }
    
    .header.scrolled {
        padding: 0.3rem 0;
    }
    
    .logo {
        font-size: 1rem;
    }
    
    .logo-icon {
        width: 32px;
        height: 32px;
        font-size: 1rem;
    }
}

.nav-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    gap: 1rem;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-blue);
}

.logo-icon {
    width: 50px;
    height: 50px;
    background: var(--gradient-primary);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    color: white;
}

/* Logo com Imagem Real */
.logo-img {
    height: 50px;
    width: auto;
    max-width: 200px;
    object-fit: contain;
    transition: opacity 0.3s ease, transform 0.3s ease;
}

.logo:hover .logo-img {
    opacity: 0.9;
    transform: scale(1.02);
}

/* Responsivo - Tablet */
@media (max-width: 768px) {
    .logo-img {
        height: 40px;
        max-width: 160px;
    }
}

/* Responsivo - Mobile */
@media (max-width: 480px) {
    .logo-img {
        height: 35px;
        max-width: 140px;
    }
}

.nav-menu {
    display: flex;
    gap: 2.5rem;
    list-style: none;
    align-items: center;
}

.nav-menu a {
    color: var(--text-secondary);
    font-weight: 500;
    position: relative;
    padding: 0.5rem 0;
}

.nav-menu a:hover,
.nav-menu a.active {
    color: var(--primary-blue);
}

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

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

/* Toggle Tema */
.theme-toggle {
    background: var(--bg-tertiary);
    border: 2px solid var(--border-color);
    border-radius: 50px;
    padding: 0.5rem 1rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    transition: all var(--transition-fast);
}

.theme-toggle:hover {
    transform: scale(1.05);
    border-color: var(--primary-blue);
}

.theme-toggle-icon {
    font-size: 1.25rem;
}

/* Menu Mobile */
.mobile-menu-toggle {
    display: none;
    background: none;
    border: none;
    font-size: 1.5rem;
    color: var(--text-primary);
    cursor: pointer;
    z-index: 1002;
    transition: transform 0.3s ease;
}

.mobile-menu-toggle:active {
    transform: scale(0.95);
}

/* Overlay para fechar menu ao clicar fora */
.menu-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    z-index: 999;
    opacity: 0;
    transition: opacity var(--transition-normal);
}

.menu-overlay.active {
    display: block;
    opacity: 1;
}

@media (max-width: 1024px) {
    .mobile-menu-toggle {
        display: block;
    }
    
    .nav-menu {
        position: fixed;
        top: 0;
        right: -100%;
        width: 80%;
        max-width: 400px;
        height: 100vh;
        background: var(--bg-primary);
        flex-direction: column;
        align-items: flex-start;
        padding: 5rem 2rem 2rem;
        box-shadow: -5px 0 15px rgba(0, 0, 0, 0.3);
        transition: right 0.4s cubic-bezier(0.4, 0, 0.2, 1);
        gap: 0;
        overflow-y: auto;
        z-index: 1000;
    }
    
    .nav-menu.active {
        right: 0 !important;
        display: flex !important;
    }
    
    .nav-menu li {
        width: 100%;
        border-bottom: 1px solid var(--border-light);
    }
    
    .nav-menu a {
        display: block;
        padding: 1.25rem 0;
        width: 100%;
        font-size: 1.125rem;
    }
    
    .nav-menu a::after {
        display: none;
    }
}

/* ==================== HERO SECTION ==================== */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gradient-hero);
    overflow: hidden;
    padding: 6rem 2rem 4rem;
}

/* Video Background */
.hero-video-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    z-index: 0;
    pointer-events: none; /* Impede interação com o vídeo */
}

/* Overlay escuro sobre o vídeo para melhorar legibilidade do texto */
.hero-video-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(
        135deg,
        rgba(0, 20, 40, 0.50) 0%,
        rgba(0, 40, 80, 0.45) 50%,
        rgba(0, 60, 120, 0.40) 100%
    );
    z-index: 0;
}

/* Hero Mobile - Ajuste para header menor */
@media (max-width: 768px) {
    .hero {
        padding: 5rem 1.5rem 3rem;
        min-height: auto;
    }
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: 1400px;
    width: 100%;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.hero-text h1 {
    color: white;
    font-size: clamp(2.5rem, 5vw, 4.5rem);
    margin-bottom: 1.5rem;
    animation: fadeInUp 0.8s ease;
}

.hero-text .subtitle {
    color: rgba(255, 255, 255, 0.95);
    font-size: clamp(1.25rem, 2vw, 1.5rem);
    margin-bottom: 2rem;
    animation: fadeInUp 1s ease;
}

.hero-text p {
    color: rgba(255, 255, 255, 0.9);
    font-size: 1.125rem;
    margin-bottom: 2.5rem;
    animation: fadeInUp 1.2s ease;
}

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

.hero-buttons {
    display: flex;
    gap: 1.5rem;
    flex-wrap: wrap;
    animation: fadeInUp 1.4s ease;
}

/* ==================== BOTÕES ==================== */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.75rem;
    padding: 1rem 2rem;
    border-radius: 12px;
    font-weight: 600;
    font-size: 1.125rem;
    cursor: pointer;
    border: none;
    transition: all var(--transition-fast);
    text-decoration: none;
}

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

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

.btn-secondary {
    background: transparent;
    color: white;
    border: 2px solid white;
}

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

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

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

/* ==================== SEÇÕES ==================== */
.section {
    padding: 6rem 2rem;
    position: relative;
}

.section-alt {
    background: var(--bg-secondary);
}

.container {
    max-width: 1400px;
    margin: 0 auto;
}

.section-header {
    text-align: center;
    max-width: 800px;
    margin: 0 auto 4rem;
}

.section-label {
    display: inline-block;
    background: var(--bg-tertiary);
    color: var(--primary-blue);
    padding: 0.5rem 1.5rem;
    border-radius: 50px;
    font-weight: 600;
    font-size: 0.875rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 1rem;
}

.section-title {
    color: var(--text-primary);
    margin-bottom: 1.5rem;
}

.section-description {
    font-size: 1.25rem;
    color: var(--text-secondary);
}

/* ==================== CARDS ==================== */
.card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 2rem;
}

.card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 2.5rem;
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
}

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

.card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary-light);
}

.card:hover::before {
    transform: scaleX(1);
}

.card-icon {
    width: 64px;
    height: 64px;
    background: var(--gradient-primary);
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    color: white;
    margin-bottom: 1.5rem;
}

.card-icon i {
    font-size: 1.75rem;
    color: white;
}

.card-title {
    color: var(--text-primary);
    margin-bottom: 1rem;
    font-size: 1.5rem;
}

.card-description {
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
}

.card-link {
    color: var(--primary-blue);
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

.card-link:hover {
    gap: 0.75rem;
}

/* ==================== STATS ==================== */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.stat-card {
    text-align: center;
    padding: 2rem;
}

.stat-number {
    font-size: 3.5rem;
    font-weight: 700;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 0.5rem;
}

.stat-label {
    color: var(--text-secondary);
    font-size: 1.125rem;
}

/* ==================== FORMULÁRIO ==================== */
.form-group {
    margin-bottom: 1.5rem;
}

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

.form-label .required {
    color: #E53E3E;
}

.form-input,
.form-select,
.form-textarea {
    width: 100%;
    padding: 1rem;
    border: 2px solid var(--border-color);
    border-radius: 12px;
    background: var(--bg-card);
    color: var(--text-primary);
    font-size: 1rem;
    transition: all var(--transition-fast);
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
    outline: none;
    border-color: var(--primary-blue);
    box-shadow: 0 0 0 3px rgba(0, 102, 204, 0.1);
}

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

.file-upload {
    border: 2px dashed var(--border-color);
    border-radius: 12px;
    padding: 2rem;
    text-align: center;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.file-upload:hover {
    border-color: var(--primary-blue);
    background: var(--bg-tertiary);
}

.file-upload-icon {
    font-size: 3rem;
    color: var(--primary-blue);
    margin-bottom: 1rem;
}

/* ==================== FOOTER ==================== */
.footer {
    background: var(--bg-secondary);
    border-top: 1px solid var(--border-color);
    padding: 4rem 2rem 2rem;
}

.footer-content {
    max-width: 1400px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 3rem;
    margin-bottom: 3rem;
}

.footer-section h3 {
    color: var(--text-primary);
    margin-bottom: 1.5rem;
    font-size: 1.25rem;
}

.footer-links {
    list-style: none;
}

.footer-links li {
    margin-bottom: 0.75rem;
}

.footer-links a {
    color: var(--text-secondary);
}

.footer-links a:hover {
    color: var(--primary-blue);
}

.social-links {
    display: flex;
    gap: 1rem;
}

.social-link {
    width: 40px;
    height: 40px;
    background: var(--bg-tertiary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-primary);
    transition: all var(--transition-fast);
}

.social-link:hover {
    background: var(--gradient-primary);
    color: white;
    transform: translateY(-3px);
}

.footer-bottom {
    max-width: 1400px;
    margin: 0 auto;
    padding-top: 2rem;
    border-top: 1px solid var(--border-color);
    text-align: center;
    color: var(--text-tertiary);
}

/* ==================== RESPONSIVO ==================== */
@media (max-width: 1024px) {
    .hero-content {
        grid-template-columns: 1fr;
        gap: 3rem;
    }
    
    .nav-menu {
        display: none;
    }
    
    .mobile-menu-toggle {
        display: block;
    }
}

@media (max-width: 768px) {
    .section {
        padding: 4rem 1.5rem;
    }
    
    .hero {
        padding: 5rem 1.5rem 3rem;
    }
    
    .hero-buttons {
        flex-direction: column;
        width: 100%;
    }
    
    .btn {
        width: 100%;
        justify-content: center;
    }
    
    .card-grid {
        grid-template-columns: 1fr;
    }
}

/* ==================== ANIMAÇÕES ==================== */
@keyframes pulse {
    0%, 100% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.05);
    }
}

.animate-pulse {
    animation: pulse 2s ease-in-out infinite;
}

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

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

.mt-2 { margin-top: 2rem; }
.mb-2 { margin-bottom: 2rem; }
.mt-4 { margin-top: 4rem; }
.mb-4 { margin-bottom: 4rem; }