/* ==========================================================================
   Estilos Globais
   ========================================================================== */
* {
    box-sizing: border-box;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    margin: 0;
    padding: 0;
}

:root {
    --whatsapp-green: #FF9800;
    --whatsapp-dark-green: #F57C00;
    --whatsapp-light-green: #FFE0B2;
    --whatsapp-blue: #FFB74D;
    --dark-gray: #5D4037;
    --light-gray: #FFF3E0;
    --medium-gray: #FB8C00;
    --white: #FFFFFF;
    --shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

body {
    background-color: var(--light-gray);
    color: var(--dark-gray);
    line-height: 1.6;
}

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

/* ==========================================================================
   Header
   ========================================================================== */
header {
    background-color: var(--whatsapp-dark-green);
    box-shadow: var(--shadow);
    color: white;
    padding: 15px 0;
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-content {
    align-items: center;
    display: flex;
    justify-content: space-between;
}

.logo {
    align-items: center;
    display: flex;
    gap: 10px;
}

.logo-img {
    height: auto;
    max-width: 110px;
    object-fit: contain;
    width: 100%;
}

.logo i {
    font-size: 28px;
}

.logo h1 {
    font-size: 24px;
    font-weight: 600;
}

.nav-links {
    display: flex;
    gap: 20px;
}

.nav-links a {
    color: white;
    font-weight: 500;
    text-decoration: none;
    transition: opacity 0.3s;
}

.nav-links a:hover {
    opacity: 0.8;
}

/* ==========================================================================
   Hero Section
   ========================================================================== */
.hero {
    background: linear-gradient(135deg, var(--whatsapp-dark-green) 0%, var(--whatsapp-green) 100%);
    color: white;
    padding: 80px 0;
    text-align: center;
}

.hero-content {
    margin: 0 auto;
    max-width: 800px;
}

.hero h2 {
    font-size: 42px;
    font-weight: 700;
    margin-bottom: 20px;
}

.hero p {
    font-size: 20px;
    margin-bottom: 30px;
    opacity: 0.9;
}

.hero-login-form {
    align-items: center;
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    justify-content: center;
}

.hero-login-form .form-input {
    border: 1px solid #ddd;
    border-radius: 5px;
    font-size: 14px;
    padding: 10px;
    width: 200px;
}

.hero-login-form .login-btn {
    background-color: #FF4500;
    border: none;
    border-radius: 5px;
    color: #fff;
    cursor: pointer;
    font-size: 14px;
    padding: 10px 20px;
    transition: background-color 0.3s;
}

.hero-login-form .login-btn:hover {
    background-color: var(--whatsapp-light-green);
}

/* ==========================================================================
   Features Section
   ========================================================================== */
.features {
    background-color: var(--white);
    padding: 80px 0;
}

.section-title {
    margin-bottom: 50px;
    text-align: center;
}

.section-title h2 {
    color: var(--dark-gray);
    font-size: 36px;
    margin-bottom: 15px;
}

.section-title p {
    color: var(--medium-gray);
    font-size: 18px;
    margin: 0 auto;
    max-width: 600px;
}

.features-grid {
    display: grid;
    gap: 30px;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
}

.feature-card {
    background-color: var(--white);
    border-radius: 10px;
    box-shadow: var(--shadow);
    padding: 30px;
    text-align: center;
    transition: transform 0.3s;
}

.feature-card:hover {
    transform: translateY(-5px);
}

.feature-icon {
    align-items: center;
    background-color: var(--whatsapp-light-green);
    border-radius: 50%;
    display: flex;
    height: 70px;
    justify-content: center;
    margin: 0 auto 20px;
    width: 70px;
}

.feature-icon i {
    color: var(--whatsapp-dark-green);
    font-size: 30px;
}

.feature-card h3 {
    color: var(--dark-gray);
    font-size: 22px;
    margin-bottom: 15px;
}

.feature-card p {
    color: var(--medium-gray);
}

/* ==========================================================================
   How It Works Section
   ========================================================================== */
.how-it-works {
    background-color: var(--light-gray);
    padding: 80px 0;
}

.steps {
    display: flex;
    flex-wrap: wrap;
    gap: 20px;
    justify-content: space-between;
    margin-top: 50px;
}

.step {
    flex: 1;
    min-width: 250px;
    padding: 20px;
    text-align: center;
}

.step-number {
    align-items: center;
    background-color: var(--whatsapp-green);
    border-radius: 50%;
    color: white;
    display: flex;
    font-size: 24px;
    font-weight: bold;
    height: 50px;
    justify-content: center;
    margin: 0 auto 20px;
    width: 50px;
}

.step h3 {
    color: var(--dark-gray);
    margin-bottom: 15px;
}

/* ==========================================================================
   Authentication Section
   ========================================================================== */
.auth-section {
    background-color: var(--white);
    padding: 80px 0;
}

.auth-container {
    display: flex;
    gap: 40px;
    margin: 0 auto;
    max-width: 1000px;
}

.auth-column {
    background-color: var(--white);
    border-radius: 10px;
    box-shadow: var(--shadow);
    flex: 1;
    padding: 40px;
}

.contact-section,
.register-section {
    border-top: 5px solid var(--whatsapp-blue);
}

.contact-title,
.register-title {
    color: var(--dark-gray);
    font-size: 28px;
    margin-bottom: 10px;
    text-align: center;
}

.contact-subtitle,
.register-subtitle {
    color: var(--medium-gray);
    margin-bottom: 30px;
    text-align: center;
}

.form-group {
    margin-bottom: 20px;
}

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

.form-input,
.form-textarea {
    border: 1px solid #ddd;
    border-radius: 5px;
    font-size: 16px;
    padding: 12px 15px;
    transition: border-color 0.3s;
    width: 100%;
}

.form-textarea {
    min-height: 100px;
    resize: vertical;
}

.form-input:focus,
.form-textarea:focus {
    border-color: var(--whatsapp-green);
    outline: none;
}

.contact-btn,
.register-btn {
    align-items: center;
    background-color: var(--whatsapp-green);
    border: none;
    border-radius: 5px;
    color: white;
    cursor: pointer;
    display: flex;
    font-size: 16px;
    font-weight: 600;
    gap: 10px;
    justify-content: center;
    padding: 14px;
    transition: background-color 0.3s;
    width: 100%;
}

.contact-btn:hover {
    background-color: var(--whatsapp-dark-green);
}

.register-btn {
    background-color: var(--whatsapp-blue);
}

.register-btn:hover {
    background-color: #2a9fd6;
}

.register-link,
.login-link {
    color: var(--medium-gray);
    margin-top: 25px;
    text-align: center;
}

.register-link a,
.login-link a {
    color: var(--medium-gray);
    font-weight: 500;
    text-decoration: none;
}

.register-link a:hover,
.login-link a:hover {
    text-decoration: underline;
}

.error-message,
.success-message {
    align-items: center;
    border-radius: 5px;
    display: flex;
    gap: 8px;
    justify-content: center;
    margin-bottom: 20px;
    padding: 12px;
    text-align: center;
}

.error-message {
    background-color: #ffebee;
    color: #c62828;
}

.success-message {
    background-color: #e8f5e9;
    color: #2e7d32;
}

.file-input-container {
    margin-top: 10px;
    position: relative;
}

.file-input-label {
    align-items: center;
    border: 2px dashed #ddd;
    border-radius: 8px;
    cursor: pointer;
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding: 20px;
    text-align: center;
    transition: border-color 0.3s;
}

.file-input-label:hover {
    border-color: var(--whatsapp-blue);
}

.file-input-label i {
    color: var(--medium-gray);
    font-size: 24px;
    margin-bottom: 10px;
}

.file-input-label span {
    color: var(--medium-gray);
    font-size: 14px;
}

.file-name {
    color: var(--medium-gray);
    font-size: 12px;
    margin-top: 10px;
}

.file-input {
    cursor: pointer;
    height: 100%;
    left: 0;
    opacity: 0;
    position: absolute;
    top: 0;
    width: 100%;
}

.profile-preview {
    border-radius: 50%;
    display: none;
    max-height: 100px;
    max-width: 100px;
    margin-top: 10px;
    object-fit: cover;
}

.password-requirements,
.password-match {
    color: var(--medium-gray);
    font-size: 12px;
    margin-top: 5px;
}

/* ==========================================================================
   FAQ Section
   ========================================================================== */
.faq-section {
    background-color: var(--light-gray);
    padding: 60px 0;
}

.faq-header {
    margin-bottom: 40px;
    text-align: center;
}

.faq-header h2 {
    color: var(--dark-gray);
    font-size: 32px;
    margin-bottom: 15px;
}

.faq-header p {
    color: var(--medium-gray);
    font-size: 18px;
    margin: 0 auto;
    max-width: 600px;
}

.faq-container {
    margin: 0 auto;
    max-width: 800px;
}

.faq-item {
    background: var(--white);
    border-radius: 8px;
    box-shadow: var(--shadow);
    margin-bottom: 15px;
    overflow: hidden;
}

.faq-question {
    align-items: center;
    background: var(--white);
    border: none;
    color: var(--dark-gray);
    cursor: pointer;
    display: flex;
    font-size: 18px;
    font-weight: 600;
    justify-content: space-between;
    padding: 20px;
    text-align: left;
    transition: background-color 0.3s;
    width: 100%;
}

.faq-question:hover {
    background: var(--whatsapp-light-green);
}

.faq-question i {
    transition: transform 0.3s;
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    padding: 0 20px;
    transition: max-height 0.3s ease, padding 0.3s ease;
}

.faq-item.active .faq-answer {
    max-height: 500px;
    padding: 0 20px 20px 20px;
}

.faq-item.active .faq-question i {
    transform: rotate(180deg);
}

/* ==========================================================================
   Footer
   ========================================================================== */
footer {
    background-color: var(--dark-gray);
    color: white;
    margin-top: 80px;
    padding: 40px 0 20px;
}

.footer-content {
    display: flex;
    flex-wrap: wrap;
    gap: 40px;
    justify-content: space-between;
    margin-bottom: 30px;
}

.footer-column {
    flex: 1;
    min-width: 200px;
}

.footer-column h3 {
    color: var(--whatsapp-green);
    font-size: 18px;
    margin-bottom: 20px;
}

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

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

.footer-column ul li a {
    color: #ddd;
    text-decoration: none;
    transition: color 0.3s;
}

.footer-column ul li a:hover {
    color: var(--whatsapp-green);
}

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

.social-links a {
    color: white;
    font-size: 20px;
    transition: color 0.3s;
}

.social-links a:hover {
    color: var(--whatsapp-green);
}

.copyright {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    color: #aaa;
    font-size: 14px;
    padding-top: 20px;
    text-align: center;
}

/* ==========================================================================
   Media Queries
   ========================================================================== */
@media (max-width: 768px) {
    .header-content {
        flex-direction: column;
        flex-wrap: wrap;
        gap: 15px;
        justify-content: center;
        text-align: center;
    }

    .logo-img {
        max-width: 100px;
    }

    .logo h1 {
        font-size: 20px;
    }

    .hero h2 {
        font-size: 32px;
    }

    .hero p {
        font-size: 18px;
    }

    .hero-login-form {
        flex-direction: column;
        gap: 15px;
    }

    .hero-login-form .form-input,
    .hero-login-form .login-btn {
        max-width: 300px;
        width: 100%;
    }

    .steps {
        flex-direction: column;
    }

    .auth-container {
        flex-direction: column;
    }

    .footer-content {
        flex-direction: column;
    }
}