/* ==========================================================================
   DESIGN SYSTEM & VARIABLES (Tecmax Premium)
   ========================================================================== */


:root {
  /* Color Palette (Industrial Premium) */
  --bg-dark: #0f1013;
  --bg-surface: #17181c;
  --bg-surface-elevated: #202228;
  --primary: #fec70e;
  --primary-hover: #e5b206;
  --primary-glow: rgba(254, 199, 14, 0.15);
  --text-primary: #f8fafc;
  --text-secondary: #cbd5e1;
  --text-muted: #94a3b8;
  --border-color: rgba(255, 255, 255, 0.06);
  --border-highlight: rgba(254, 199, 14, 0.2);
  
  /* Fonts */
  --font-title: 'Outfit', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-body: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  
  /* Transitions */
  --transition-smooth: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-bounce: all 0.5s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

/* ==========================================================================
   BASE & RESET
   ========================================================================== */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
  background-color: var(--bg-dark);
  color: var(--text-primary);
  font-family: var(--font-body);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

body {
  overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-title);
  font-weight: 700;
  line-height: 1.25;
  color: var(--text-primary);
}

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

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

/* ==========================================================================
   UTILITY CLASSES & GRID
   ========================================================================== */
.container {
  width: 100%;
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 2rem;
}

.section {
  padding: 6rem 0;
}

.text-accent {
  color: var(--primary);
  background: linear-gradient(135deg, #fec70e 0%, #ff9d00 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

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

.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 3rem; align-items: center; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 2rem; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1.5rem; }

@media (max-width: 1024px) {
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; gap: 2rem; }
  .section { padding: 4rem 0; }
  .container { padding: 0 1.25rem; }
}

/* ==========================================================================
   BUTTONS & ACCENTS
   ========================================================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.875rem 2rem;
  font-family: var(--font-title);
  font-weight: 600;
  font-size: 0.95rem;
  border-radius: 8px;
  cursor: pointer;
  transition: var(--transition-bounce);
  border: 2px solid transparent;
  gap: 0.5rem;
}

.btn-primary {
  background-color: var(--primary);
  color: #000;
  box-shadow: 0 4px 20px var(--primary-glow);
}

.btn-primary:hover {
  background-color: var(--primary-hover);
  transform: translateY(-3px);
  box-shadow: 0 6px 24px rgba(254, 199, 14, 0.3);
}

.btn-outline {
  border-color: rgba(255, 255, 255, 0.15);
  background-color: transparent;
  color: var(--text-primary);
}

.btn-outline:hover {
  border-color: var(--primary);
  color: var(--primary);
  background-color: rgba(254, 199, 14, 0.05);
  transform: translateY(-3px);
}

/* ==========================================================================
   HEADER / NAVBAR
   ========================================================================== */
.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background-color: rgba(15, 16, 19, 0.8);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-color);
  padding: 1.25rem 0;
  transition: var(--transition-smooth);
}

.header.scrolled {
  padding: 0.8rem 0;
  background-color: rgba(15, 16, 19, 0.95);
}

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

.logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.logo-text {
  font-family: var(--font-title);
  font-weight: 900;
  font-size: 1.6rem;
  letter-spacing: -1px;
}

.logo-icon {
  width: 32px;
  height: 32px;
  background-color: var(--primary);
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #000;
  font-weight: 900;
}

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

.nav-link {
  font-weight: 500;
  font-size: 0.95rem;
  color: var(--text-secondary);
}

.nav-link:hover, .nav-link.active {
  color: var(--primary);
}

.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 6px;
  cursor: pointer;
  background: none;
  border: none;
}

.menu-toggle span {
  width: 25px;
  height: 2px;
  background-color: var(--text-primary);
  transition: var(--transition-smooth);
}

@media (max-width: 992px) {
  .menu-toggle { display: flex; }
  .nav-links {
    position: absolute;
    top: 100%;
    left: 0;
    width: 100%;
    background-color: var(--bg-surface);
    flex-direction: column;
    padding: 2rem;
    gap: 1.5rem;
    border-bottom: 1px solid var(--border-color);
    transform: translateY(-150%);
    opacity: 0;
    transition: var(--transition-smooth);
    pointer-events: none;
  }
  .nav-links.active {
    transform: translateY(0);
    opacity: 1;
    pointer-events: all;
  }
}

/* ==========================================================================
   HERO SECTION
   ========================================================================== */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding-top: 8rem;
  background: radial-gradient(circle at 80% 20%, rgba(254, 199, 14, 0.04) 0%, transparent 60%),
              radial-gradient(circle at 10% 80%, rgba(30, 41, 59, 0.2) 0%, transparent 50%);
  position: relative;
}

.hero::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 150px;
  background: linear-gradient(to top, var(--bg-dark), transparent);
  pointer-events: none;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 1rem;
  background-color: rgba(254, 199, 14, 0.08);
  border: 1px solid var(--border-highlight);
  color: var(--primary);
  border-radius: 50px;
  font-family: var(--font-title);
  font-weight: 600;
  font-size: 0.85rem;
  margin-bottom: 1.5rem;
}

.hero-title {
  font-size: 4rem;
  line-height: 1.1;
  font-weight: 900;
  letter-spacing: -2px;
  margin-bottom: 1.5rem;
}

.hero-desc {
  font-size: 1.15rem;
  color: var(--text-secondary);
  margin-bottom: 2.5rem;
  max-width: 580px;
}

.hero-cta {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

.hero-visual {
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
}

/* Glass card mockup */
.hero-card {
  width: 100%;
  max-width: 480px;
  background: linear-gradient(135deg, rgba(23, 24, 28, 0.7) 0%, rgba(15, 16, 19, 0.9) 100%);
  border: 1px solid var(--border-color);
  border-radius: 16px;
  padding: 2.5rem;
  box-shadow: 0 40px 80px rgba(0,0,0,0.5);
  position: relative;
  overflow: hidden;
}

.hero-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: linear-gradient(to right, var(--primary), #ff9d00);
}

@media (max-width: 768px) {
  .hero-title { font-size: 2.7rem; }
  .hero { padding-top: 6rem; min-height: auto; padding-bottom: 4rem; }
}

/* ==========================================================================
   FEATURES / DIFFERENTIATORS
   ========================================================================== */
.section-tag {
  display: inline-block;
  color: var(--primary);
  font-size: 0.85rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 2px;
  margin-bottom: 0.75rem;
}

.section-title {
  font-size: 2.6rem;
  font-weight: 900;
  letter-spacing: -1px;
  margin-bottom: 1rem;
}

.section-desc {
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto 4rem auto;
}

.feature-card {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 2.5rem;
  transition: var(--transition-bounce);
  position: relative;
  overflow: hidden;
}

.feature-card:hover {
  transform: translateY(-8px);
  border-color: var(--border-highlight);
  box-shadow: 0 20px 40px rgba(0,0,0,0.3);
}

.feature-icon {
  width: 54px;
  height: 54px;
  background-color: rgba(254, 199, 14, 0.08);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary);
  font-size: 1.5rem;
  margin-bottom: 1.5rem;
  border: 1px solid var(--border-highlight);
}

.feature-card h3 {
  font-size: 1.3rem;
  margin-bottom: 1rem;
}

.feature-card p {
  color: var(--text-secondary);
  font-size: 0.95rem;
}

/* ==========================================================================
   INTERACTIVE SIZING CALCULATOR
   ========================================================================== */
.calculator-box {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: 16px;
  max-width: 800px;
  margin: 0 auto;
  padding: 3rem;
  box-shadow: 0 30px 60px rgba(0,0,0,0.4);
}

.calc-steps {
  display: flex;
  justify-content: space-between;
  margin-bottom: 3rem;
  position: relative;
}

.calc-steps::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 0;
  width: 100%;
  height: 2px;
  background-color: var(--bg-surface-elevated);
  z-index: 1;
  transform: translateY(-50%);
}

.calc-step {
  width: 36px;
  height: 36px;
  background-color: var(--bg-surface-elevated);
  border: 2px solid var(--border-color);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  color: var(--text-muted);
  position: relative;
  z-index: 2;
  transition: var(--transition-smooth);
}

.calc-step.active {
  background-color: var(--primary);
  border-color: var(--primary);
  color: #000;
}

.calc-panel {
  display: none;
}

.calc-panel.active {
  display: block;
  animation: fadeIn 0.4s ease;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

.calc-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.25rem;
  margin-bottom: 2rem;
}

@media (max-width: 600px) {
  .calc-grid { grid-template-columns: 1fr; }
  .calculator-box { padding: 1.5rem; }
}

.calc-card {
  background-color: var(--bg-surface-elevated);
  border: 1px solid var(--border-color);
  padding: 1.5rem;
  border-radius: 10px;
  cursor: pointer;
  text-align: center;
  transition: var(--transition-smooth);
}

.calc-card:hover, .calc-card.selected {
  border-color: var(--primary);
  background-color: rgba(254, 199, 14, 0.05);
}

.calc-card i {
  font-size: 2rem;
  color: var(--text-secondary);
  margin-bottom: 1rem;
}

.calc-card.selected i {
  color: var(--primary);
}

.calc-actions {
  display: flex;
  justify-content: space-between;
  margin-top: 2rem;
}

/* ==========================================================================
   FOOTER
   ========================================================================== */
.footer {
  background-color: #08080a;
  border-top: 1px solid var(--border-color);
  padding: 5rem 0 2rem 0;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr repeat(3, 1fr);
  gap: 4rem;
  margin-bottom: 4rem;
}

@media (max-width: 992px) {
  .footer-grid { grid-template-columns: 1fr; gap: 2.5rem; }
}

.footer-col h4 {
  font-size: 1.1rem;
  margin-bottom: 1.5rem;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--text-primary);
}

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

.footer-col ul li {
  margin-bottom: 0.85rem;
}

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

.footer-col ul a:hover {
  color: var(--primary);
}

.footer-bottom {
  border-top: 1px solid var(--border-color);
  padding-top: 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  color: var(--text-muted);
  font-size: 0.9rem;
  flex-wrap: wrap;
  gap: 1rem;
}


/* ==========================================================================
   PRODUCT CATALOG & SPECIFIC VIEWS
   ========================================================================== */
.filter-btn-group {
  display: flex;
  justify-content: center;
  gap: 1rem;
  margin-bottom: 3rem;
  flex-wrap: wrap;
}

.filter-btn {
  padding: 0.6rem 1.5rem;
  border: 1px solid var(--border-color);
  border-radius: 50px;
  background-color: var(--bg-surface);
  color: var(--text-secondary);
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition-smooth);
}

.filter-btn.active, .filter-btn:hover {
  border-color: var(--primary);
  color: var(--primary);
  background-color: rgba(254, 199, 14, 0.05);
}

.product-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}

@media (max-width: 992px) {
  .product-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 600px) {
  .product-grid { grid-template-columns: 1fr; }
}

.product-card {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 2rem;
  transition: var(--transition-bounce);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  height: 100%;
}

.product-card:hover {
  transform: translateY(-5px);
  border-color: var(--border-highlight);
  box-shadow: 0 15px 30px rgba(0,0,0,0.4);
}

.product-card.hidden-card {
  display: none !important;
}

.product-tag {
  font-size: 0.75rem;
  text-transform: uppercase;
  font-weight: 700;
  color: var(--primary);
  letter-spacing: 1px;
  margin-bottom: 0.5rem;
}

.product-title {
  font-size: 1.5rem;
  font-weight: 900;
  margin-bottom: 1rem;
}

.product-specs {
  list-style: none;
  margin-bottom: 1.5rem;
  font-size: 0.9rem;
  color: var(--text-secondary);
}

.product-specs li {
  margin-bottom: 0.5rem;
  display: flex;
  justify-content: space-between;
  border-bottom: 1px dashed rgba(255,255,255,0.05);
  padding-bottom: 0.25rem;
}

.product-specs li strong {
  color: var(--text-primary);
}

/* ==========================================================================
   TECHNICAL SPECIFICATION SHEETS (Individual Product Page)
   ========================================================================== */
.specs-table {
  width: 100%;
  border-collapse: collapse;
  margin-bottom: 2rem;
  font-size: 0.95rem;
}

.specs-table th, .specs-table td {
  padding: 0.75rem 1rem;
  border-bottom: 1px solid var(--border-color);
  text-align: left;
}

.specs-table th {
  background-color: var(--bg-surface-elevated);
  color: var(--primary);
  font-weight: 700;
}

.specs-table td strong {
  color: var(--text-primary);
}

.specs-section-title {
  margin-top: 2.5rem;
  margin-bottom: 1rem;
  font-size: 1.3rem;
  color: var(--primary);
  border-bottom: 1px solid var(--border-color);
  padding-bottom: 0.5rem;
}

/* Sizing Calculator Helper Classes */
.calc-card-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.75rem;
  margin-bottom: 1.5rem;
}

.calc-card-item {
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 1rem;
  text-align: center;
  display: block;
}

.calc-card-item i {
  color: var(--primary);
  margin-bottom: 0.5rem;
  display: block;
  font-size: 1.25rem;
}

.calc-card-item span {
  font-size: 0.85rem;
  font-weight: 600;
}

.calc-input-wrapper {
  max-width: 500px;
  margin: 0 auto 1.5rem auto;
}

.calc-input-wrapper label {
  display: block;
  margin-bottom: 0.5rem;
  font-weight: 600;
}

.calc-text-input {
  width: 100%;
  padding: 0.75rem;
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-color);
  color: #fff;
  border-radius: 8px;
  font-size: 1.1rem;
  font-family: var(--font-title);
  font-weight: 700;
}

.calc-result-header {
  text-align: center;
  margin-bottom: 2.5rem;
}

.calc-result-header p {
  color: var(--text-secondary);
  margin-bottom: 0.5rem;
}

.calc-result-header h2 {
  font-size: 3rem;
  font-weight: 900;
  margin-bottom: 0.5rem;
}

.calc-result-header span {
  font-size: 1.1rem;
}

.calc-specs-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  margin-bottom: 2.5rem;
  text-align: left;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.calc-spec-indicator {
  background: var(--bg-surface-elevated);
  padding: 1rem;
  border-radius: 8px;
  border-left: 3px solid var(--primary);
}

.calc-spec-indicator span {
  font-size: 0.8rem;
  color: var(--text-secondary);
  display: block;
}

.calc-spec-indicator strong {
  font-size: 1.25rem;
}

/* Extra Banner Layouts */
.section-banner {
  padding-top: 8rem;
  background: linear-gradient(180deg, #17181c 0%, #0f1013 100%);
}

/* ==========================================================================
   PRODUCT SHEET DETAILS (gerador/*.html CSS rules)
   ========================================================================== */
.back-link-wrapper {
  display: flex;
  gap: 1rem;
  align-items: center;
  margin-bottom: 1rem;
}

.back-link {
  color: var(--text-secondary);
  font-weight: 500;
}

.back-link:hover {
  color: var(--primary);
}

.banner-flex-layout {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  flex-wrap: wrap;
  gap: 2rem;
}

.badge-container {
  display: flex;
  gap: 1.5rem;
  background: var(--bg-surface);
  padding: 1.5rem 2.5rem;
  border-radius: 12px;
  border: 1px solid var(--border-color);
}

.badge-divider {
  width: 1px;
  background-color: var(--border-color);
}

.badge-item {
  text-align: center;
}

.badge-label {
  font-size: 0.8rem;
  color: var(--text-secondary);
  text-transform: uppercase;
  display: block;
  margin-bottom: 0.25rem;
}

.badge-value-primary {
  font-size: 2.2rem;
  color: var(--primary);
  font-family: var(--font-title);
  font-weight: 900;
  line-height: 1;
}

.badge-value {
  font-size: 2.2rem;
  color: var(--text-primary);
  font-family: var(--font-title);
  font-weight: 900;
  line-height: 1;
}

.product-side-card {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-color);
  padding: 2.5rem;
  border-radius: 12px;
  margin-bottom: 2rem;
}

.side-card-title {
  font-size: 1.25rem;
  margin-bottom: 1rem;
  color: var(--primary);
}

.side-card-text {
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.7;
}

.side-card-text:not(:last-child) {
  margin-bottom: 1.5rem;
}

.product-cta-card {
  background-color: var(--bg-surface-elevated);
  border: 1px solid var(--border-color);
  padding: 2.5rem;
  border-radius: 12px;
  text-align: center;
}

.product-cta-card h3 {
  font-size: 1.3rem;
  margin-bottom: 1rem;
  font-weight: 700;
}

.product-cta-card p {
  color: var(--text-secondary);
  font-size: 0.95rem;
  margin-bottom: 2rem;
}

.whatsapp-btn {
  width: 100%;
  background-color: #25d366 !important;
  color: #fff !important;
  border-color: transparent !important;
}

.whatsapp-btn:hover {
  background-color: #20ba5a !important;
  box-shadow: 0 6px 24px rgba(37, 211, 102, 0.3) !important;
}

.footer-logo-desc {
  color: var(--text-secondary);
  font-size: 0.95rem;
  margin-top: 1rem;
}

.footer-contact-item {
  color: var(--text-secondary);
  font-size: 0.95rem;
  margin-bottom: 0.5rem;
}

/* Security Lock Overlay Styling */
.security-lock-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background-color: rgba(15, 16, 19, 0.95);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  z-index: 9999999;
  display: flex;
  justify-content: center;
  align-items: center;
  color: #fff;
  text-align: center;
}

.security-lock-card {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-highlight);
  padding: 3.5rem;
  border-radius: 16px;
  max-width: 540px;
  box-shadow: 0 30px 60px rgba(0, 0, 0, 0.6);
}

/* Prevent text copying globally */
body {
  -webkit-user-select: none;
  -moz-user-select: none;
  -ms-user-select: none;
  user-select: none;
}