/**
 * =============================================================================
 * PROTHEUS CONSULTORIA - SISTEMA DE GESTÃO WEB
 * =============================================================================
 * 
 * @arquivo     css/style.css
 * @descrição   Estilos principais do site
 * @versão      2.1.0
 * @autor       Protheus Consultoria
 * @copyright   2025 Protheus Consultoria - Todos os direitos reservados
 * @website     https://protheus.net.br
 * 
 * CHANGELOG v2.1:
 * - Header com gradiente azul petróleo → vinho
 * - Logo com efeito glassmorphism
 * - Botão formulário com texto branco no hover (corrigido)
 * - Sticky header melhorado
 * - Efeitos de sombra profissionais
 * 
 * =============================================================================
 */

/* ========== VARIÁVEIS CSS ========== */
:root {
    --primary-color: #1B5F7E;
    --secondary-color: #8B2941;
    --white: #FFFFFF;
    --light: #F8F9FA;
    --dark: #2C3E50;
    --shadow: rgba(0, 0, 0, 0.1);
    --shadow-hover: rgba(0, 0, 0, 0.2);
    --transition: all 0.3s ease;
}

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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: var(--dark);
    background-color: var(--light);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* ========== HEADER COM GRADIENTE (v2.1) ========== */
.header {
    background: linear-gradient(135deg, #1B5F7E 0%, #8B2941 100%);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
    position: sticky;
    top: 0;
    z-index: 1000;
    transition: var(--transition);
}

.header.scrolled {
    box-shadow: 0 6px 25px rgba(0, 0, 0, 0.2);
}

/* ========== NAVBAR ========== */
.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 0;
}

/* Logo com Glassmorphism (v2.1) */
.logo {
    background: rgba(255, 255, 255, 0.15);
    backdrop-filter: blur(10px);
    padding: 8px 15px;
    border-radius: 12px;
    border: 1px solid rgba(255, 255, 255, 0.2);
    transition: var(--transition);
}

.logo:hover {
    background: rgba(255, 255, 255, 0.25);
    transform: translateY(-2px);
}

.logo img {
    height: 50px;
    filter: brightness(0) invert(1); /* Logo branca */
    transition: var(--transition);
}

/* Menu de Navegação */
.nav-menu {
    display: flex;
    list-style: none;
    gap: 30px;
    align-items: center;
}

.nav-link {
    color: var(--white);
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition);
    padding: 8px 15px;
    border-radius: 5px;
    display: flex;
    align-items: center;
    gap: 5px;
}

.nav-link:hover {
    background: rgba(255, 255, 255, 0.15);
    transform: translateY(-2px);
}

/* Dropdown Menu */
.dropdown {
    position: relative;
}

.dropdown-menu {
    position: absolute;
    top: 100%;
    left: 0;
    background: var(--white);
    list-style: none;
    min-width: 200px;
    box-shadow: 0 8px 25px var(--shadow-hover);
    border-radius: 8px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: var(--transition);
    margin-top: 10px;
}

.dropdown:hover .dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.dropdown-menu li {
    border-bottom: 1px solid var(--light);
}

.dropdown-menu li:last-child {
    border-bottom: none;
}

.dropdown-menu a {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 12px 20px;
    color: var(--dark);
    text-decoration: none;
    transition: var(--transition);
}

.dropdown-menu a:hover {
    background: var(--primary-color);
    color: var(--white);
}

.dropdown-menu a i {
    width: 20px;
}

/* Mobile Menu Toggle */
.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 5px;
}

.mobile-menu-toggle span {
    width: 25px;
    height: 3px;
    background: var(--white);
    transition: var(--transition);
    border-radius: 3px;
}

/* ========== HERO SECTION ========== */
.hero {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: var(--white);
    padding: 100px 0;
    text-align: center;
}

.hero h1 {
    font-size: 3rem;
    margin-bottom: 20px;
    animation: fadeInDown 1s;
}

.hero p {
    font-size: 1.3rem;
    margin-bottom: 30px;
    animation: fadeInUp 1s;
}

.btn {
    display: inline-block;
    padding: 15px 40px;
    background: var(--white);
    color: var(--primary-color);
    text-decoration: none;
    border-radius: 50px;
    font-weight: bold;
    transition: var(--transition);
    border: 2px solid var(--white);
}

.btn:hover {
    background: transparent;
    color: var(--white);
    transform: translateY(-3px);
    box-shadow: 0 10px 25px var(--shadow-hover);
}

/* ========== SECTIONS ========== */
.section {
    padding: 80px 0;
}

.section-title {
    text-align: center;
    font-size: 2.5rem;
    color: var(--primary-color);
    margin-bottom: 50px;
    position: relative;
}

.section-title::after {
    content: '';
    display: block;
    width: 100px;
    height: 4px;
    background: var(--secondary-color);
    margin: 20px auto 0;
    border-radius: 2px;
}

/* ========== CARDS ========== */
.cards-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin-top: 40px;
}

.card {
    background: var(--white);
    padding: 40px;
    border-radius: 10px;
    box-shadow: 0 5px 20px var(--shadow);
    transition: var(--transition);
    text-align: center;
}

.card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 40px var(--shadow-hover);
}

.card-icon {
    font-size: 3rem;
    color: var(--primary-color);
    margin-bottom: 20px;
}

.card h3 {
    color: var(--primary-color);
    margin-bottom: 15px;
    font-size: 1.5rem;
}

.card p {
    color: var(--dark);
    line-height: 1.8;
}

/* ========== FORMULÁRIO DE CONTATO (v2.1 - BOTÃO CORRIGIDO) ========== */
.contact-form {
    max-width: 600px;
    margin: 0 auto;
    background: var(--white);
    padding: 40px;
    border-radius: 10px;
    box-shadow: 0 5px 20px var(--shadow);
}

.form-group {
    margin-bottom: 25px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    color: var(--dark);
    font-weight: 500;
}

.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 12px;
    border: 2px solid var(--light);
    border-radius: 5px;
    font-size: 1rem;
    transition: var(--transition);
    font-family: inherit;
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(27, 95, 126, 0.1);
}

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

/* BOTÃO ENVIAR CORRIGIDO (v2.1) - Texto branco sempre visível */
.contact-form button[type="submit"] {
    width: 100%;
    padding: 15px;
    background: var(--primary-color);
    color: var(--white) !important; /* Força cor branca */
    border: none;
    border-radius: 5px;
    font-size: 1.1rem;
    font-weight: bold;
    cursor: pointer;
    transition: var(--transition);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.contact-form button[type="submit"]:hover {
    background: var(--secondary-color);
    color: var(--white) !important; /* Mantém texto branco no hover */
    transform: translateY(-2px);
    box-shadow: 0 10px 25px var(--shadow-hover);
}

.contact-form button[type="submit"]:active {
    transform: translateY(0);
}

/* ========== LOGIN FORMS ========== */
.login-container {
    max-width: 450px;
    margin: 50px auto;
    background: var(--white);
    padding: 40px;
    border-radius: 10px;
    box-shadow: 0 5px 20px var(--shadow);
}

.login-container h2 {
    text-align: center;
    color: var(--primary-color);
    margin-bottom: 30px;
}

.login-container .btn {
    width: 100%;
    background: var(--primary-color);
    color: var(--white);
    border: none;
    cursor: pointer;
    margin-top: 10px;
}

.login-container .btn:hover {
    background: var(--secondary-color);
}

/* ========== FOOTER ========== */
.footer {
    background: var(--dark);
    color: var(--white);
    padding: 60px 0 20px;
    margin-top: 80px;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 40px;
    margin-bottom: 40px;
}

.footer-section h3 {
    color: var(--white);
    margin-bottom: 20px;
    font-size: 1.3rem;
}

.footer-section p {
    margin-bottom: 10px;
    color: rgba(255, 255, 255, 0.8);
}

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

.footer-section ul li {
    margin-bottom: 10px;
}

.footer-section ul li a {
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    transition: var(--transition);
}

.footer-section ul li a:hover {
    color: var(--white);
    padding-left: 5px;
}

.social-links {
    display: flex;
    gap: 15px;
    margin-top: 15px;
}

.social-links a {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: var(--primary-color);
    color: var(--white);
    border-radius: 50%;
    text-decoration: none;
    transition: var(--transition);
}

.social-links a:hover {
    background: var(--secondary-color);
    transform: translateY(-3px);
}

.footer-bottom {
    text-align: center;
    padding-top: 30px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    color: rgba(255, 255, 255, 0.6);
}

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

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

/* ========== RESPONSIVO ========== */
@media (max-width: 768px) {
    .mobile-menu-toggle {
        display: flex;
    }
    
    .nav-menu {
        position: fixed;
        top: 80px;
        left: -100%;
        width: 100%;
        height: calc(100vh - 80px);
        background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
        flex-direction: column;
        padding: 30px;
        transition: var(--transition);
    }
    
    .nav-menu.active {
        left: 0;
    }
    
    .dropdown-menu {
        position: static;
        opacity: 1;
        visibility: visible;
        transform: none;
        margin-top: 10px;
        background: rgba(255, 255, 255, 0.1);
    }
    
    .dropdown-menu a {
        color: var(--white);
    }
    
    .hero h1 {
        font-size: 2rem;
    }
    
    .hero p {
        font-size: 1rem;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .cards-grid {
        grid-template-columns: 1fr;
    }
}

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

.mt-20 {
    margin-top: 20px;
}

.mb-20 {
    margin-bottom: 20px;
}

.alert {
    padding: 15px;
    border-radius: 5px;
    margin-bottom: 20px;
}

.alert-success {
    background: #d4edda;
    color: #155724;
    border: 1px solid #c3e6cb;
}

.alert-error {
    background: #f8d7da;
    color: #721c24;
    border: 1px solid #f5c6cb;
}

.alert-info {
    background: #d1ecf1;
    color: #0c5460;
    border: 1px solid #bee5eb;
}