/* 
   Nortis Energia Landing Page Stylesheet
   Design System, Custom Utility Classes and Responsive Layouts
*/

/* --- Google Fonts Import --- */
@import url('https://fonts.googleapis.com/css2?family=Rajdhani:wght@500;600;700&family=Inter:wght@400;500;600&display=swap');

/* --- Root Variables (Design System Tokens) --- */
:root {
    /* Colors */
    --color-primary: #112A46;
    --color-primary-dark: #0D1B2A;
    --color-secondary: #FFFFFF;
    --color-accent: #00AEEF;
    --color-bg-main: #FFFFFF;
    --color-bg-sec: #F5F7FA;
    --color-text-main: #0D1B2A;
    --color-text-sec: #4A5568;
    --color-text-light: #FFFFFF;
    --color-border: #E2E8F0;
    
    /* Gradients */
    --gradient-nortis: linear-gradient(135deg, #112A46 0%, #00AEEF 100%);
    --gradient-nortis-hover: linear-gradient(135deg, #0D1B2A 0%, #008ec4 100%);
    --gradient-hero-overlay: linear-gradient(180deg, rgba(17, 42, 70, 0.85) 0%, rgba(13, 27, 42, 0.95) 100%);
    --gradient-light-blue: linear-gradient(185deg, rgba(245,247,250,1) 0%, rgba(225,238,245,1) 100%);

    /* Fonts */
    --font-heading: 'Rajdhani', sans-serif;
    --font-body: 'Inter', sans-serif;

    /* Spacing & Borders */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --radius-full: 9999px;
    
    /* Shadows */
    --shadow-sm: 0 2px 4px rgba(13, 27, 42, 0.05);
    --shadow-md: 0 8px 20px rgba(13, 27, 42, 0.06);
    --shadow-lg: 0 15px 35px rgba(13, 27, 42, 0.1);
    --shadow-accent: 0 10px 25px rgba(0, 174, 239, 0.3);
    
    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
}

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
    -webkit-text-size-adjust: 100%;
}

body {
    font-family: var(--font-body);
    font-size: 1rem;
    line-height: 1.6;
    color: var(--var-text-main);
    background-color: var(--color-bg-main);
    overflow-x: hidden;
}

/* --- Typography --- */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    color: var(--color-primary-dark);
    font-weight: 700;
    line-height: 1.2;
}

h1 {
    font-size: clamp(2.5rem, 5vw, 4rem);
    text-transform: uppercase;
}

h2 {
    font-size: clamp(1.8rem, 3.5vw, 2.5rem);
    text-transform: uppercase;
    position: relative;
    padding-bottom: 0.75rem;
    margin-bottom: 2rem;
    text-align: center;
}

h2::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 4px;
    background-color: var(--color-accent);
    border-radius: var(--radius-full);
}

h3 {
    font-size: clamp(1.25rem, 2vw, 1.6rem);
    text-transform: uppercase;
    font-weight: 600;
}

p {
    color: var(--color-text-sec);
    margin-bottom: 1rem;
}

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

img {
    max-width: 100%;
    height: auto;
    display: block;
}

/* --- Layout Components --- */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

section {
    padding: 5rem 0;
    position: relative;
}

.section-bg-sec {
    background-color: var(--color-bg-sec);
}

/* --- Buttons & CTAs --- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-heading);
    font-size: 1.15rem;
    font-weight: 600;
    text-transform: uppercase;
    padding: 0.75rem 2rem;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.165, 0.84, 0.44, 1);
    border: none;
    outline: none;
}

.btn-accent {
    background-color: var(--color-accent);
    color: var(--color-text-light);
    box-shadow: var(--shadow-accent);
}

.btn-accent:hover {
    background-color: #0093ca;
    transform: translateY(-3px);
    box-shadow: 0 15px 30px rgba(0, 174, 239, 0.45);
}

.btn-accent:active {
    transform: translateY(-1px);
}

.btn-primary {
    background-color: var(--color-primary);
    color: var(--color-text-light);
}

.btn-primary:hover {
    background-color: var(--color-primary-dark);
    transform: translateY(-3px);
    box-shadow: 0 10px 25px rgba(17, 42, 70, 0.3);
}

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

.btn-white:hover {
    background-color: var(--color-bg-sec);
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
}

/* --- Header & Navigation Menu (Topo + Icones) --- */
header {
    background-color: var(--color-secondary);
    box-shadow: var(--shadow-md);
    position: fixed;
    top: 0;
    left: 0;
    z-index: 1000;
    width: 100%;
    transition: background-color 0.3s ease, backdrop-filter 0.3s ease, box-shadow 0.3s ease;
}

.header-top {
    padding: 1rem 0 0.5rem 0;
    display: flex;
    justify-content: center;
    align-items: center;
    border-bottom: 1px solid var(--color-border);
    max-height: 80px;
    opacity: 1;
    overflow: hidden;
    transition: max-height 0.3s ease, padding 0.3s ease, opacity 0.3s ease, border-color 0.3s ease;
}

.header-top .logo-img {
    height: 48px;
    width: auto;
}

/* Scrolled state: hide logo, make nav translucent with 90% opacity and blur */
header.scrolled {
    background-color: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    box-shadow: var(--shadow-sm);
}

header.scrolled .header-top {
    max-height: 0;
    padding-top: 0;
    padding-bottom: 0;
    opacity: 0;
    border-bottom-color: transparent;
}

/* Icons Navigation (Format matched to reference) */
.nav-icons-container {
    padding: 0.75rem 0;
    display: flex;
    justify-content: center;
    overflow-x: auto;
    scrollbar-width: none; /* Hide scrollbar for Firefox */
    -ms-overflow-style: none;  /* Hide scrollbar for IE/Edge */
}

.nav-icons-container::-webkit-scrollbar {
    display: none; /* Hide scrollbar for Chrome, Safari, Opera */
}

.nav-list {
    display: flex;
    align-items: center;
    gap: 2rem;
    list-style: none;
    padding: 0 1rem;
}

.nav-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    cursor: pointer;
}

.nav-link {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-decoration: none;
}

.nav-icon-box {
    width: 60px;
    height: 60px;
    border-radius: var(--radius-lg);
    background: var(--gradient-nortis);
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-md);
    margin-bottom: 0.5rem;
    transition: all 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.nav-icon-box svg {
    width: 28px;
    height: 28px;
    fill: var(--color-text-light);
    transition: var(--transition-fast);
}

.nav-label {
    font-family: var(--font-heading);
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--color-primary-dark);
    text-transform: uppercase;
    transition: var(--transition-fast);
}

/* Hover effects for Nav Icons */
.nav-item:hover .nav-icon-box {
    transform: translateY(-5px) scale(1.05);
    background: var(--gradient-nortis-hover);
    box-shadow: 0 12px 25px rgba(0, 174, 239, 0.25);
}

.nav-item:hover .nav-label {
    color: var(--color-accent);
}

.nav-item.active .nav-icon-box {
    background: var(--color-accent);
    box-shadow: var(--shadow-accent);
}

.nav-item.active .nav-label {
    color: var(--color-accent);
}

/* --- Hero Section --- */
.hero {
    background-image: var(--gradient-hero-overlay), url('images/hero_bg.png');
    background-size: cover;
    background-position: center;
    background-attachment: scroll;
    min-height: 80vh;
    display: flex;
    align-items: center;
    color: var(--color-text-light);
    padding: 6rem 0;
}

.hero-grid {
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
    gap: 3rem;
    align-items: center;
    width: 100%;
}

.hero-left {
    max-width: 650px;
}

.hero-left h1 {
    color: var(--color-text-light);
    margin-bottom: 1.5rem;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}

.hero-left p {
    color: #E2E8F0;
    font-size: clamp(1.1rem, 2vw, 1.25rem);
    margin-bottom: 2.5rem;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.1);
}

.hero-right {
    display: flex;
    justify-content: center;
    align-items: center;
}

/* Partnership Card */
.partnership-card {
    background: rgba(255, 255, 255, 0.7); /* Semi-transparent white */
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.25);
    border-radius: var(--radius-xl);
    padding: 2.25rem;
    box-shadow: 0 20px 45px rgba(0, 0, 0, 0.25);
    width: 100%;
    max-width: 420px;
    text-align: center;
}

.partnership-logo-box {
    margin-bottom: 1.25rem;
    display: flex;
    justify-content: center;
    align-items: center;
}

.oab-card-logo {
    max-height: 120px;
    width: auto;
    object-fit: contain;
}

.partnership-tag {
    display: inline-block;
    background: rgba(0, 174, 239, 0.12);
    color: #0081b0; /* Slightly darker cyan for high-contrast on light background */
    font-family: var(--font-heading);
    font-size: 0.8rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
    padding: 0.35rem 0.85rem;
    border-radius: var(--radius-full);
    border: 1px solid rgba(0, 174, 239, 0.25);
    margin-bottom: 1.25rem;
}

.partnership-text {
    color: var(--color-primary-dark); /* High-contrast dark blue text for readability */
    font-size: 0.95rem;
    line-height: 1.6;
    text-align: justify;
}

/* --- Diferenciais (Como Funciona) --- */
.differentials-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.diff-card {
    background-color: var(--color-secondary);
    border-radius: var(--radius-lg);
    padding: 2.5rem 2rem;
    box-shadow: var(--shadow-md);
    transition: all 0.3s cubic-bezier(0.165, 0.84, 0.44, 1);
    display: flex;
    flex-direction: column;
    align-items: flex-start;
}

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

.diff-icon-box {
    width: 64px;
    height: 64px;
    border-radius: var(--radius-md);
    background: var(--gradient-nortis);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.5rem;
    box-shadow: 0 8px 16px rgba(0, 174, 239, 0.15);
}

.diff-icon-box svg {
    width: 32px;
    height: 32px;
    fill: var(--color-text-light);
}

.diff-card h3 {
    margin-bottom: 1rem;
    color: var(--color-primary-dark);
}

.diff-card p {
    font-size: 0.95rem;
    line-height: 1.5;
    margin-bottom: 0;
}

/* --- Regulamentação --- */
.regulatory-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.regulatory-text h2 {
    text-align: left;
}

.regulatory-text h2::after {
    left: 30px;
}

.regulatory-text p {
    margin-bottom: 1.5rem;
}

.regulatory-list {
    list-style: none;
    margin-top: 1.5rem;
}

.regulatory-item {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    margin-bottom: 1.25rem;
}

.regulatory-item-icon {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-md);
    background-color: rgba(0, 174, 239, 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.regulatory-item-icon svg {
    width: 22px;
    height: 22px;
    fill: var(--color-accent);
}

.regulatory-item-text h4 {
    font-family: var(--font-heading);
    font-size: 1.2rem;
    color: var(--color-primary-dark);
    margin-bottom: 0.25rem;
    text-transform: uppercase;
}

.regulatory-item-text p {
    font-size: 0.95rem;
    margin-bottom: 0;
}

.regulatory-img-box {
    background: var(--gradient-light-blue);
    border-radius: var(--radius-xl);
    padding: 2rem;
    display: flex;
    justify-content: center;
    align-items: center;
    box-shadow: var(--shadow-md);
}

.regulatory-img-box img {
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
}

/* --- Números / Prova Social --- */
.stats {
    background-color: var(--color-primary-dark);
    color: var(--color-text-light);
    padding: 4rem 0;
    text-align: center;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 3rem;
}

.stat-item {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.stat-num {
    font-family: var(--font-heading);
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 700;
    color: var(--color-accent);
    line-height: 1;
    margin-bottom: 0.5rem;
}

.stat-label {
    font-family: var(--font-heading);
    font-size: 1.15rem;
    text-transform: uppercase;
    font-weight: 500;
    color: #E2E8F0;
    letter-spacing: 1px;
}

/* --- Simulador de Economia --- */
.sim-grid {
    display: grid;
    grid-template-columns: 1.1fr 0.9fr;
    gap: 3rem;
    align-items: start;
    margin-top: 2rem;
}

/* Calculator Card */
.calculator-card {
    background-color: var(--color-bg-sec);
    border-radius: var(--radius-xl);
    padding: 2.5rem;
    box-shadow: var(--shadow-md);
    border: 1px solid var(--color-border);
}

.calc-title {
    font-size: 1.6rem;
    margin-bottom: 1.5rem;
    text-align: center;
    color: var(--color-primary-dark);
    text-transform: uppercase;
}

/* Toggle CPF/CNPJ */
.toggle-container {
    display: flex;
    background-color: #E2E8F0;
    padding: 0.3rem;
    border-radius: var(--radius-md);
    margin-bottom: 2rem;
}

.toggle-btn {
    flex: 1;
    text-align: center;
    padding: 0.6rem 0;
    font-family: var(--font-heading);
    font-size: 1.1rem;
    font-weight: 600;
    text-transform: uppercase;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: var(--transition-fast);
    background-color: transparent;
    color: var(--color-text-sec);
    border: none;
}

.toggle-btn.active {
    background-color: var(--color-primary);
    color: var(--color-text-light);
    box-shadow: var(--shadow-sm);
}

/* Slider and Inputs */
.input-slider-group {
    margin-bottom: 2rem;
}

.slider-labels {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 0.75rem;
}

.slider-labels label {
    font-family: var(--font-heading);
    font-size: 1.15rem;
    font-weight: 600;
    color: var(--color-primary-dark);
    text-transform: uppercase;
}

.bill-amount-display {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-accent);
}

.bill-slider {
    -webkit-appearance: none;
    width: 100%;
    height: 8px;
    border-radius: var(--radius-full);
    background: #E2E8F0;
    outline: none;
    margin-bottom: 1.5rem;
}

.bill-slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 24px;
    height: 24px;
    border-radius: 50%;
    background: var(--color-accent);
    cursor: pointer;
    box-shadow: 0 0 10px rgba(0, 174, 239, 0.5);
    transition: var(--transition-fast);
}

.bill-slider::-webkit-slider-thumb:hover {
    transform: scale(1.15);
}

.bill-slider::-moz-range-thumb {
    width: 24px;
    height: 24px;
    border-radius: 50%;
    background: var(--color-accent);
    cursor: pointer;
    box-shadow: 0 0 10px rgba(0, 174, 239, 0.5);
    transition: var(--transition-fast);
    border: none;
}

.bill-slider::-moz-range-thumb:hover {
    transform: scale(1.15);
}

/* Results Display */
.calc-results {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.result-box {
    background-color: var(--color-secondary);
    padding: 1.5rem;
    border-radius: var(--radius-md);
    text-align: center;
    box-shadow: var(--shadow-sm);
    border-left: 4px solid var(--color-accent);
}

.result-box.green {
    border-left-color: #2ec4b6;
}

.result-box span {
    display: block;
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    font-weight: 600;
    margin-bottom: 6px;
    color: var(--color-text-sec);
}

.result-val {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-primary-dark);
}

.result-box.green .result-val {
    color: #1b8a7f;
}

.calc-note {
    font-size: 0.8rem;
    text-align: center;
    color: var(--color-text-sec);
    line-height: 1.4;
}

/* Lead Form Card Styles */
.form-card {
    background-color: var(--color-secondary);
    border-radius: var(--radius-xl);
    padding: 2.5rem;
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--color-border);
}

.form-title {
    font-size: 1.6rem;
    margin-bottom: 0.5rem;
    color: var(--color-primary-dark);
    text-transform: uppercase;
}

.form-subtitle {
    font-size: 0.95rem;
    margin-bottom: 2rem;
    color: var(--color-text-sec);
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    font-size: 0.9rem;
    color: var(--color-primary-dark);
}

.form-control {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 1px solid #CBD5E1;
    border-radius: var(--radius-sm);
    font-family: var(--font-body);
    font-size: 0.95rem;
    transition: var(--transition-fast);
    color: var(--color-primary-dark);
}

.form-control:focus {
    outline: none;
    border-color: var(--color-accent);
    box-shadow: 0 0 0 3px rgba(0, 174, 239, 0.15);
}

/* File Upload UI */
.file-upload-wrapper {
    position: relative;
    border: 2px dashed #CBD5E1;
    padding: 1.25rem;
    border-radius: var(--radius-sm);
    text-align: center;
    cursor: pointer;
    transition: var(--transition-fast);
}

.file-upload-wrapper:hover {
    border-color: var(--color-accent);
    background-color: rgba(0, 174, 239, 0.02);
}

.file-upload-wrapper input[type=file] {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    cursor: pointer;
}

.file-upload-text {
    font-size: 0.9rem;
    color: var(--color-text-sec);
    display: flex;
    align-items: center;
    justify-content: center;
}

/* Spinner Animation for Submit Button */
@keyframes rotate {
    100% { transform: rotate(360deg); }
}
@keyframes dash {
    0% { stroke-dasharray: 1, 150; stroke-dashoffset: 0; }
    50% { stroke-dasharray: 90, 150; stroke-dashoffset: -35; }
    100% { stroke-dasharray: 90, 150; stroke-dashoffset: -124; }
}

/* --- Sobre a Nortis --- */
.about-container {
    display: grid;
    grid-template-columns: 1.1fr 0.9fr;
    gap: 4rem;
    align-items: center;
}

.about-text h2 {
    text-align: left;
}

.about-text h2::after {
    left: 30px;
}

.about-text p {
    font-size: 1.05rem;
    line-height: 1.7;
    margin-bottom: 1.5rem;
}

.about-img-box {
    position: relative;
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}

.about-img-box::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(180deg, rgba(17, 42, 70, 0) 50%, rgba(17, 42, 70, 0.4) 100%);
}

/* --- FAQ Section --- */
.faq-container {
    max-width: 900px;
    margin: 0 auto;
}

.faq-list {
    margin-top: 3rem;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.faq-item {
    background-color: var(--color-secondary);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--color-border);
    overflow: hidden;
    transition: var(--transition-fast);
}

.faq-item:hover {
    box-shadow: var(--shadow-md);
    border-color: rgba(0, 174, 239, 0.3);
}

.faq-question-btn {
    width: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: none;
    border: none;
    outline: none;
    padding: 1.25rem 1.75rem;
    text-align: left;
    cursor: pointer;
    font-family: var(--font-heading);
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--color-primary-dark);
    text-transform: uppercase;
    transition: var(--transition-fast);
}

.faq-question-btn:hover {
    color: var(--color-accent);
}

.faq-icon {
    font-size: 1.5rem;
    font-weight: 400;
    color: var(--color-accent);
    transition: transform 0.3s ease;
    line-height: 1;
}

.faq-answer {
    max-height: 0;
    opacity: 0;
    overflow: hidden;
    transition: all 0.3s cubic-bezier(0.165, 0.84, 0.44, 1);
    background-color: var(--color-bg-sec);
}

.faq-answer-inner {
    padding: 1.25rem 1.75rem 1.75rem 1.75rem;
    border-top: 1px solid var(--color-border);
    font-size: 0.95rem;
    color: var(--color-text-sec);
    line-height: 1.6;
}

/* Active FAQ State */
.faq-item.active {
    border-color: var(--color-accent);
    box-shadow: var(--shadow-md);
}

.faq-item.active .faq-question-btn {
    color: var(--color-accent);
}

.faq-item.active .faq-icon {
    transform: rotate(45deg);
}

.faq-item.active .faq-answer {
    max-height: 500px; /* Large enough to fit any answer */
    opacity: 1;
}

/* --- Grupo Dasart / Parceiros --- */
.partners {
    background-color: var(--color-bg-sec);
    padding: 5rem 0;
    text-align: center;
    border-top: 1px solid var(--color-border);
}

.partners-intro {
    max-width: 600px;
    margin: 0 auto 3rem auto;
}

.partners-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 2.5rem;
}

.partners-row {
    display: flex;
    justify-content: center;
    align-items: center;
    flex-wrap: wrap;
    gap: 2.5rem;
    width: 100%;
}

.partner-logo-box {
    background-color: var(--color-secondary);
    border-radius: var(--radius-md);
    padding: 1.5rem 2rem;
    width: 240px;
    height: 120px;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-sm);
    transition: all 0.3s ease;
    border: 1px solid var(--color-border);
}

.partner-logo-box:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-md);
    border-color: rgba(0, 174, 239, 0.2);
}

.partner-logo-box img {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
}

/* Special sizing for main Group logo */
.partner-logo-box.large {
    width: 320px;
    height: 140px;
}

/* --- Rodapé (Footer) --- */
footer {
    background-color: var(--color-primary-dark);
    color: var(--color-text-light);
    padding: 5rem 0 2rem 0;
    font-size: 0.9rem;
    border-top: 3px solid var(--color-accent);
}

.footer-grid {
    display: grid;
    grid-template-columns: 1.2fr 0.8fr 1fr 1fr;
    gap: 3rem;
    margin-bottom: 4rem;
}

.footer-info .logo-img {
    height: 48px;
    margin-bottom: 1.5rem;
    filter: brightness(0) invert(1); /* Make logo white */
}

.footer-info p {
    color: #A0AEC0;
    line-height: 1.6;
}

.footer-links h4, .footer-contact h4, .footer-social h4 {
    font-family: var(--font-heading);
    font-size: 1.2rem;
    color: var(--color-text-light);
    margin-bottom: 1.5rem;
    text-transform: uppercase;
    position: relative;
    padding-bottom: 0.5rem;
}

.footer-links h4::after, .footer-contact h4::after, .footer-social h4::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 30px;
    height: 2px;
    background-color: var(--color-accent);
}

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

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

.footer-links-list a {
    color: #A0AEC0;
}

.footer-links-list a:hover {
    color: var(--color-accent);
    padding-left: 5px;
}

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

.footer-contact-list li {
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
    margin-bottom: 1rem;
    color: #A0AEC0;
}

.footer-contact-list svg {
    width: 18px;
    height: 18px;
    fill: var(--color-accent);
    flex-shrink: 0;
    margin-top: 0.15rem;
}

.footer-contact-list a:hover {
    color: var(--color-accent);
}

.footer-social p {
    color: #A0AEC0;
    margin-bottom: 1.5rem;
}

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

.social-btn {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-md);
    background-color: rgba(255, 255, 255, 0.05);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition-fast);
}

.social-btn svg {
    width: 20px;
    height: 20px;
    fill: var(--color-text-light);
}

.social-btn:hover {
    background-color: var(--color-accent);
    transform: translateY(-3px);
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.08);
    padding-top: 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    color: #718096;
}

/* --- Scroll Animation Classes --- */
.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

.reveal.active {
    opacity: 1;
    transform: translateY(0);
}


/* --- Responsive Adjustments --- */

@media (max-width: 1024px) {
    .regulatory-container, .sim-grid, .about-container {
        grid-template-columns: 1fr;
        gap: 3rem;
    }
    
    .regulatory-img-box, .simulator-img-box {
        order: -1; /* Display image first on mobile/tablet */
        max-width: 600px;
        margin: 0 auto;
    }
    
    .footer-grid {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 768px) {
    section {
        padding: 4rem 0;
    }
    
    .container {
        padding: 0 1rem;
    }
    
    .hero-grid {
        grid-template-columns: 1fr;
        gap: 2.5rem;
        text-align: center;
    }
    
    .hero-left {
        max-width: 100%;
    }
    
    .partnership-card {
        margin: 0 auto;
        padding: 1.5rem;
    }
    
    .calculator-card, .form-card {
        padding: 1.25rem;
    }
    
    .calc-results {
        gap: 0.75rem;
        grid-template-columns: 1fr 1fr;
    }
    
    .result-box {
        padding: 1rem 0.5rem;
    }
    
    /* Navigation Icons Touch/Scroll behavior for Mobile */
    .nav-icons-container {
        justify-content: center;
        padding: 1.25rem 1rem;
        overflow-x: hidden;
    }
    
    .nav-list {
        display: grid;
        grid-template-columns: repeat(3, 1fr);
        gap: 1.5rem 1rem;
        width: 100%;
        padding: 0;
    }
    
    .nav-icon-box {
        width: 58px;
        height: 58px;
    }
    
    .nav-icon-box svg {
        width: 26px;
        height: 26px;
    }
    
    .nav-label {
        font-size: 0.85rem;
    }
    
    /* Collapsed horizontal line layout when scrolled on mobile */
    header.scrolled .nav-icons-container {
        justify-content: flex-start;
        overflow-x: auto;
        scrollbar-width: none;
        -ms-overflow-style: none;
        padding: 0.5rem 1rem;
    }
    
    header.scrolled .nav-icons-container::-webkit-scrollbar {
        display: none;
    }
    
    header.scrolled .nav-list {
        display: flex;
        flex-direction: row;
        grid-template-columns: none;
        gap: 1.25rem;
        width: max-content;
        padding: 0;
    }
    
    header.scrolled .nav-item {
        flex-shrink: 0;
    }
    
    header.scrolled .nav-icon-box {
        width: 38px;
        height: 38px;
        border-radius: var(--radius-sm);
        margin-bottom: 0.25rem;
    }
    
    header.scrolled .nav-icon-box svg {
        width: 18px;
        height: 18px;
    }
    
    header.scrolled .nav-label {
        font-size: 0.75rem;
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
        gap: 2.5rem;
    }
    
    .footer-bottom {
        flex-direction: column;
        gap: 1rem;
        text-align: center;
    }
}

/* Floating WhatsApp Button */
.floating-whatsapp {
    position: fixed;
    bottom: 24px;
    right: 24px;
    width: 60px;
    height: 60px;
    background-color: #25D366;
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.25);
    z-index: 9999;
    transition: all 0.3s ease;
}

.floating-whatsapp svg {
    width: 32px;
    height: 32px;
    fill: white;
}

.floating-whatsapp:hover {
    transform: scale(1.1);
    box-shadow: 0 6px 16px rgba(37, 211, 102, 0.45);
    background-color: #20ba5a;
}

@media (max-width: 768px) {
    .floating-whatsapp {
        bottom: 16px;
        right: 16px;
        width: 50px;
        height: 50px;
    }
    
    .floating-whatsapp svg {
        width: 26px;
        height: 26px;
    }
}

/* Usina de Arte Credit Logo */
.footer-uda-logo {
    height: 13px;
    width: 40px;
    filter: brightness(0) invert(1); /* Invert black logo to white for dark theme contrast */
    opacity: 0.65;
    transition: opacity 0.3s ease, transform 0.3s ease;
    vertical-align: middle;
}

.footer-uda-logo:hover {
    opacity: 1;
    transform: scale(1.03);
}