/* ==========================================================================
   Configurações Gerais - SFAR Engenharia Elétrica
   ========================================================================== */

html {
    scroll-behavior: smooth;
    scroll-padding-top: 80px;
}

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

:root {
    --primary-color: #1A2B4C;    /* Azul Escuro SFAR */
    --accent-color: #F2994A;     /* Laranja Elétrico SFAR */
    --accent-hover: #E08532;     /* Laranja Tom Sobre Tom */
    --light-bg: #F4F6F9;
    --text-dark: #2D3748;
    --text-muted: #4A5568;
    --text-light: #FFFFFF;
}

body {
    color: var(--text-dark);
    line-height: 1.6;
    background-color: #FFFFFF;
}

.container {
    width: 90%;
    max-width: 1200px;
    margin: 0 auto;
}

.line {
    width: 60px;
    height: 4px;
    background-color: var(--accent-color);
    margin: 15px 0;
}

.line.center {
    margin: 15px auto 40px auto;
}

/* ==========================================================================
   Cabeçalho e Navegação
   ========================================================================== */

header {
    background-color: var(--primary-color);
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
    box-shadow: 0 2px 10px rgba(0,0,0,0.15);
}

.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 0;
}

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

.logo-img, .logo img {
    max-height: 48px;
    width: auto;
    display: block;
    object-fit: contain;
}

nav, #nav-menu {
    display: flex;
    align-items: center;
}

nav a, #nav-menu a {
    color: var(--text-light);
    text-decoration: none;
    margin-left: 20px;
    font-weight: 500;
    transition: color 0.3s ease;
    font-size: 15px;
}

nav a:hover, #nav-menu a:hover {
    color: var(--accent-color);
}

.btn-menu {
    background-color: var(--accent-color);
    padding: 8px 18px;
    border-radius: 4px;
    color: var(--primary-color) !important;
    font-weight: bold;
    transition: background-color 0.3s ease;
}

.btn-menu:hover {
    background-color: var(--accent-hover);
}

#btn-mobile {
    display: none;
    background: none;
    border: none;
    color: var(--text-light);
    font-size: 24px;
    cursor: pointer;
    padding: 5px;
}

/* ==========================================================================
   Seção Hero (Principal)
   ========================================================================== */

.hero {
    background: linear-gradient(rgba(26, 43, 76, 0.92), rgba(26, 43, 76, 0.88)), 
                url('https://images.unsplash.com/photo-1473341304170-971dccb5ac1e?auto=format&fit=crop&w=1920&q=80') no-repeat center center/cover;
    min-height: 100vh;
    display: flex;
    align-items: center;
    color: var(--text-light);
    padding-top: 110px;
    padding-bottom: 60px;
}

.hero-content {
    max-width: 750px;
}

.hero h1 {
    font-size: 42px;
    margin-bottom: 20px;
    line-height: 1.25;
    font-weight: 700;
}

.hero p {
    font-size: 18px;
    margin-bottom: 35px;
    opacity: 0.9;
}

.hero-buttons {
    display: flex;
    gap: 15px;
    flex-wrap: wrap;
}

.btn-primary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    background-color: var(--accent-color);
    color: var(--primary-color);
    padding: 12px 30px;
    border-radius: 4px;
    text-decoration: none;
    font-weight: bold;
    transition: transform 0.2s ease, background-color 0.3s ease;
}

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

.btn-secondary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    background-color: transparent;
    border: 2px solid var(--accent-color);
    color: var(--text-light);
    padding: 10px 28px;
    border-radius: 4px;
    text-decoration: none;
    font-weight: bold;
    transition: all 0.3s ease;
}

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

/* ==========================================================================
   Apresentação Institucional
   ========================================================================== */

.about {
    padding: 90px 0;
}

.about-text h2 {
    font-size: 32px;
    color: var(--primary-color);
}

.about-text p {
    font-size: 17px;
    color: var(--text-muted);
    margin-bottom: 30px;
}

.stats {
    display: flex;
    gap: 40px;
    flex-wrap: wrap;
}

.stat-item h3 {
    font-size: 28px;
    color: var(--primary-color);
    border-bottom: 3px solid var(--accent-color);
    display: inline-block;
    margin-bottom: 5px;
}

.stat-item p {
    font-weight: 600;
    color: #718096;
}

/* ==========================================================================
   Portfólio de Serviços
   ========================================================================== */

.services {
    background-color: var(--light-bg);
    padding: 90px 0;
}

.section-title {
    text-align: center;
    font-size: 32px;
    color: var(--primary-color);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
}

.service-card {
    background-color: var(--text-light);
    padding: 35px 25px;
    border-radius: 6px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.04);
    text-align: center;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    border-top: 4px solid transparent;
}

.service-card:hover {
    transform: translateY(-5px);
    border-top: 4px solid var(--accent-color);
    box-shadow: 0 10px 25px rgba(0,0,0,0.08);
}

.service-icon {
    font-size: 38px;
    color: var(--primary-color);
    margin-bottom: 20px;
}

.service-card h3 {
    font-size: 19px;
    margin-bottom: 15px;
    color: var(--primary-color);
}

.service-card p {
    font-size: 14.5px;
    color: var(--text-muted);
}

/* ==========================================================================
   Assistente de IA Preditiva (Interação)
   ========================================================================== */

.ai-section {
    padding: 90px 0;
    background: linear-gradient(135deg, #0F1A30 0%, #1A2B4C 100%);
    color: var(--text-light);
}

.ai-header {
    text-align: center;
    max-width: 750px;
    margin: 0 auto 40px auto;
}

.ai-header h2 {
    font-size: 32px;
    color: #FFFFFF;
    margin-bottom: 12px;
}

.ai-header p {
    color: #A0AEC0;
    font-size: 16px;
}

.ai-interactive-card {
    background-color: #1A2B4C;
    border-radius: 12px;
    padding: 35px;
    max-width: 800px;
    margin: 0 auto;
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.3);
    border: 1px solid rgba(242, 153, 74, 0.25);
}

.ai-inputs-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    margin-bottom: 25px;
}

.ai-inputs-grid label {
    display: block;
    font-size: 14px;
    font-weight: 600;
    color: #E2E8F0;
    margin-bottom: 8px;
}

.ai-inputs-grid select {
    width: 100%;
    padding: 12px;
    border: 1px solid rgba(255, 255, 255, 0.15);
    border-radius: 6px;
    background-color: #0F1A30;
    color: #FFFFFF;
    font-size: 14px;
    outline: none;
}

.ai-inputs-grid select:focus {
    border-color: var(--accent-color);
}

.ai-btn-wrapper {
    text-align: center;
    margin-bottom: 10px;
}

.ai-response-box {
    background-color: #0F1A30;
    border-radius: 8px;
    padding: 25px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    margin-top: 25px;
}

.ai-loading {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    color: var(--accent-color);
    font-size: 15px;
}

.ai-report-header {
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--accent-color);
    font-size: 18px;
    margin-bottom: 15px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    padding-bottom: 10px;
}

.ai-report-body {
    font-size: 14.5px;
    color: #CBD5E0;
    line-height: 1.6;
    margin-bottom: 20px;
}

.ai-report-body ul {
    margin: 10px 0 15px 20px;
}

.ai-report-body li {
    margin-bottom: 6px;
}

.ai-report-footer {
    text-align: center;
}

/* ==========================================================================
   Diagnosticador de Riscos (Quiz Interativo)
   ========================================================================== */

.quiz-section {
    padding: 90px 0;
    background-color: #0B132B;
    color: var(--text-light);
}

.quiz-header {
    text-align: center;
    max-width: 750px;
    margin: 0 auto 40px auto;
}

.quiz-badge {
    display: inline-block;
    background-color: rgba(242, 153, 74, 0.15);
    color: var(--accent-color);
    padding: 6px 16px;
    border-radius: 50px;
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 15px;
    border: 1px solid rgba(242, 153, 74, 0.3);
}

.quiz-header h2 {
    font-size: 32px;
    margin-bottom: 12px;
    color: var(--text-light);
}

.quiz-header p {
    color: #A0AEC0;
    font-size: 16px;
}

.quiz-card {
    background-color: #1A2B4C;
    border-radius: 12px;
    padding: 40px;
    max-width: 700px;
    margin: 0 auto;
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.3);
    border: 1px solid rgba(255, 255, 255, 0.08);
}

.quiz-progress-bar {
    width: 100%;
    height: 8px;
    background-color: #0F1A30;
    border-radius: 4px;
    margin-bottom: 30px;
    overflow: hidden;
}

.quiz-progress {
    height: 100%;
    width: 25%;
    background: linear-gradient(90deg, var(--accent-color), #E08532);
    transition: width 0.4s ease;
}

.quiz-step-title {
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 25px;
    color: #FFFFFF;
}

.quiz-options {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.quiz-option-btn {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px 20px;
    background-color: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.12);
    border-radius: 8px;
    color: var(--text-light);
    font-size: 16px;
    font-weight: 500;
    cursor: pointer;
    text-align: left;
    transition: all 0.25s ease;
}

.quiz-option-btn:hover {
    background-color: rgba(242, 153, 74, 0.15);
    border-color: var(--accent-color);
    transform: translateX(4px);
}

.quiz-option-btn i {
    color: var(--accent-color);
}

/* Resultados do Quiz */
.result-box {
    text-align: center;
}

.risk-level-badge {
    display: inline-block;
    padding: 8px 24px;
    border-radius: 50px;
    font-size: 18px;
    font-weight: bold;
    text-transform: uppercase;
    margin-bottom: 20px;
    letter-spacing: 1px;
}

.risk-baixo {
    background-color: rgba(39, 174, 96, 0.2);
    color: #27AE60;
    border: 1px solid #27AE60;
}

.risk-medio {
    background-color: rgba(242, 153, 74, 0.2);
    color: #F2994A;
    border: 1px solid #F2994A;
}

.risk-critico {
    background-color: rgba(235, 87, 87, 0.2);
    color: #EB5757;
    border: 1px solid #EB5757;
}

.result-box h3 {
    font-size: 24px;
    margin-bottom: 15px;
}

.result-box p {
    color: #CBD5E0;
    font-size: 16px;
    line-height: 1.6;
    margin-bottom: 30px;
}

.result-actions {
    display: flex;
    gap: 15px;
    justify-content: center;
    flex-wrap: wrap;
}

/* ==========================================================================
   Calculadora de Economia Energética
   ========================================================================== */

.calc-section {
    padding: 90px 0;
    background-color: var(--light-bg);
}

.calc-header {
    text-align: center;
    max-width: 750px;
    margin: 0 auto 40px auto;
}

.calc-header h2 {
    font-size: 32px;
    color: var(--primary-color);
    margin-bottom: 12px;
}

.calc-header p {
    color: var(--text-muted);
    font-size: 16px;
}

.calc-card {
    background-color: #FFFFFF;
    border-radius: 12px;
    padding: 40px;
    max-width: 800px;
    margin: 0 auto;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
    border: 1px solid #E2E8F0;
}

.calc-inputs {
    margin-bottom: 35px;
}

.calc-inputs label {
    display: block;
    font-size: 18px;
    color: var(--primary-color);
    margin-bottom: 15px;
}

.calc-inputs label strong {
    color: var(--accent-hover);
    font-size: 22px;
}

.calc-inputs input[type="range"] {
    width: 100%;
    height: 10px;
    border-radius: 5px;
    background: #CBD5E0;
    outline: none;
    accent-color: var(--accent-color);
    cursor: pointer;
}

.facility-type-selector {
    margin-top: 25px;
}

.facility-type-selector label {
    font-size: 15px;
    margin-bottom: 10px;
}

.radio-group {
    display: flex;
    gap: 20px;
    flex-wrap: wrap;
}

.radio-group label {
    font-size: 15px;
    color: var(--text-dark);
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 8px;
}

.calc-results-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    margin-bottom: 25px;
}

.calc-result-item {
    background-color: #F8FAFC;
    padding: 25px;
    border-radius: 8px;
    border: 1px solid #E2E8F0;
    text-align: center;
}

.calc-result-item small {
    font-size: 13px;
    text-transform: uppercase;
    font-weight: 700;
    color: #718096;
    letter-spacing: 0.5px;
}

.calc-result-item h3 {
    font-size: 28px;
    margin: 10px 0 5px 0;
}

.text-danger {
    color: #E53E3E;
}

.text-success {
    color: #27AE60;
}

.calc-result-item span {
    font-size: 12px;
    color: #A0AEC0;
}

/* Transparência de Onde Atuar */
.calc-actions-breakdown {
    background-color: #F8FAFC;
    border: 1px solid #E2E8F0;
    border-radius: 8px;
    padding: 20px 25px;
    margin-bottom: 30px;
}

.calc-actions-breakdown h4 {
    font-size: 15px;
    color: var(--primary-color);
    margin-bottom: 12px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.calc-actions-breakdown h4 i {
    color: var(--accent-color);
}

.actions-list {
    list-style: none;
    padding: 0;
    margin: 0;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
}

.actions-list li {
    font-size: 13.5px;
    color: var(--text-dark);
    display: flex;
    align-items: flex-start;
    gap: 8px;
    line-height: 1.4;
}

.actions-list li i {
    color: #27AE60;
    margin-top: 3px;
    font-size: 12px;
}

.calc-action {
    text-align: center;
}

/* ==========================================================================
   Contato e Formulário
   ========================================================================== */

.contact {
    padding: 90px 0;
    background-color: var(--primary-color);
    color: var(--text-light);
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
    text-align: left;
    align-items: center;
}

.contact-info h2 {
    font-size: 36px;
    color: var(--text-light);
}

.contact-details {
    margin: 25px 0;
}

.contact-details p {
    font-size: 16px;
    margin-bottom: 12px;
    opacity: 0.9;
}

.contact-details i {
    color: var(--accent-color);
    margin-right: 10px;
}

.contact-form-container {
    background-color: var(--text-light);
    padding: 40px;
    border-radius: 8px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.2);
}

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

.contact-form label {
    display: block;
    font-size: 14px;
    font-weight: 600;
    color: var(--primary-color);
    margin-bottom: 6px;
}

.contact-form input,
.contact-form select,
.contact-form textarea {
    width: 100%;
    padding: 12px;
    border: 1px solid #CBD5E0;
    border-radius: 4px;
    font-size: 15px;
    color: var(--text-dark);
    background-color: #F8FAFC;
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.contact-form input:focus,
.contact-form select:focus,
.contact-form textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(26, 43, 76, 0.15);
    background-color: #FFFFFF;
}

.btn-submit {
    width: 100%;
    background-color: var(--accent-color);
    color: var(--primary-color);
    padding: 14px;
    border: none;
    border-radius: 4px;
    font-size: 16px;
    font-weight: bold;
    cursor: pointer;
    transition: background-color 0.3s ease;
}

.btn-submit:hover {
    background-color: var(--accent-hover);
}

.btn-whatsapp {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    background-color: #25D366;
    color: #FFFFFF;
    padding: 12px 30px;
    border-radius: 50px;
    text-decoration: none;
    font-weight: bold;
    font-size: 16px;
    box-shadow: 0 4px 15px rgba(37, 211, 102, 0.25);
    transition: transform 0.2s ease, background-color 0.3s ease;
}

.btn-whatsapp:hover {
    transform: scale(1.03);
    background-color: #20BA59;
}

/* ==========================================================================
   Rodapé
   ========================================================================== */

footer {
    background-color: #0F1A30;
    color: #A0AEC0;
    padding: 35px 0;
    text-align: center;
    font-size: 14px;
    border-top: 1px solid rgba(255,255,255,0.05);
}

footer p {
    margin: 6px 0;
}

/* ==========================================================================
   Responsividade (Mobile & Tablet)
   ========================================================================== */

@media (max-width: 768px) {
    #btn-mobile {
        display: block;
    }

    nav, #nav-menu {
        display: none;
        position: absolute;
        width: 100%;
        background-color: var(--primary-color);
        top: 100%;
        left: 0;
        padding: 25px;
        box-shadow: 0 8px 15px rgba(0,0,0,0.2);
        max-height: calc(100vh - 70px);
        overflow-y: auto;
    }

    nav.active, #nav-menu.active {
        display: flex;
        flex-direction: column;
        align-items: stretch;
        gap: 20px;
    }

    nav a, #nav-menu a {
        margin-left: 0;
        text-align: center;
    }

    .btn-menu {
        text-align: center;
    }

    .hero h1 {
        font-size: 30px;
    }

    .hero-buttons {
        flex-direction: column;
    }

    .btn-primary, .btn-secondary {
        width: 100%;
        text-align: center;
    }

    .quiz-card {
        padding: 25px 20px;
    }
    
    .quiz-header h2,
    .calc-header h2,
    .ai-header h2 {
        font-size: 26px;
    }

    .ai-inputs-grid {
        grid-template-columns: 1fr;
    }

    .result-actions {
        flex-direction: column;
    }

    .result-actions .btn-primary,
    .result-actions .btn-secondary {
        width: 100%;
        text-align: center;
    }

    .calc-card {
        padding: 25px 20px;
    }

    .calc-results-grid {
        grid-template-columns: 1fr;
    }

    .actions-list {
        grid-template-columns: 1fr;
    }

    .contact-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .contact-form-container {
        padding: 25px;
    }
}