/* ==========================================================================
   DURALUX® Morocco — Official Production Design System
   Domain: www.duralux.ma
   Style: Professional Trade & Luxury Stone Protection Studio
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&family=Montserrat:wght@600;700;800&display=swap');

:root {
  /* Clean Trade & Luxury Palette */
  --bg-main: #FFFFFF;
  --bg-subtle: #F8FAFC;
  --bg-card: #FFFFFF;
  --bg-navy: #0F172A;
  
  --navy-primary: #1E3A8A;
  --navy-dark: #0F172A;
  --blue-accent: #2563EB;
  --blue-light: #EFF6FF;
  
  --red-accent: #DC2626;
  --red-hover: #B91C1C;
  --gold-warranty: #D97706;
  --green-success: #16A34A;
  
  --text-main: #0F172A;
  --text-muted: #475569;
  --text-light: #64748B;
  --text-white: #FFFFFF;
  
  --border-light: #E2E8F0;
  --border-navy: rgba(30, 58, 138, 0.2);
  
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.08);
  --shadow-md: 0 4px 14px rgba(15, 23, 42, 0.08);
  --shadow-lg: 0 10px 30px rgba(15, 23, 42, 0.12);
  
  --font-heading: 'Montserrat', sans-serif;
  --font-body: 'Inter', sans-serif;
  
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-full: 9999px;
  
  --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-normal: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-body);
  background-color: var(--bg-main);
  color: var(--text-main);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  color: var(--navy-dark);
  line-height: 1.25;
  letter-spacing: -0.02em;
}

.container {
  width: 100%;
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 20px;
}

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

/* Top Contact Bar */
.top-contact-bar {
  background: var(--navy-dark);
  color: var(--text-white);
  padding: 8px 0;
  font-size: 0.8rem;
  border-bottom: 2px solid var(--gold-warranty);
  transition: var(--transition-normal);
}

.top-bar-flex {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 15px;
}

.top-bar-contact {
  display: flex;
  align-items: center;
  gap: 20px;
}

.top-bar-contact a {
  color: #F1F5F9;
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: 6px;
  font-weight: 500;
  transition: var(--transition-fast);
}

.top-bar-contact a:hover {
  color: var(--gold-warranty);
}

/* Header & Navbar - Smooth Compact Glass */
header.navbar {
  background: rgba(255, 255, 255, 0.96);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-light);
  position: sticky;
  top: 0;
  z-index: 1000;
  box-shadow: 0 4px 20px rgba(15, 23, 42, 0.06);
  transition: var(--transition-normal);
}

header.navbar.scrolled {
  box-shadow: 0 6px 25px rgba(15, 23, 42, 0.12);
}

header.navbar.scrolled .nav-container {
  padding: 8px 20px;
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 20px;
  transition: var(--transition-normal);
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
}

.logo-icon-svg {
  height: 38px;
  width: auto;
  display: block;
}

.logo-text-group {
  display: flex;
  flex-direction: column;
  border-left: 2px solid #94A3B8;
  padding-left: 12px;
}

.brand-name {
  font-size: 1.35rem;
  font-weight: 800;
  color: var(--navy-dark);
  letter-spacing: 0.05em;
  line-height: 1;
}

.brand-tagline {
  font-size: 0.58rem;
  text-transform: uppercase;
  letter-spacing: 0.16em;
  color: #475569;
  font-weight: 700;
  margin-top: 3px;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 14px;
  list-style: none;
}

.nav-menu a {
  text-decoration: none;
  color: var(--navy-dark);
  font-weight: 600;
  font-size: 0.86rem;
  padding: 6px 12px;
  border-radius: var(--radius-sm);
  transition: var(--transition-fast);
}

.nav-menu a:hover {
  color: var(--blue-accent);
  background: var(--blue-light);
}

.btn-header-estimate {
  background: var(--red-accent);
  color: #FFF;
  padding: 9px 20px;
  border-radius: var(--radius-sm);
  text-decoration: none;
  font-weight: 700;
  font-size: 0.82rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  transition: var(--transition-fast);
  box-shadow: 0 4px 10px rgba(220, 38, 38, 0.25);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
}

.btn-header-estimate:hover {
  background: var(--red-hover);
  transform: translateY(-1px);
  box-shadow: 0 6px 15px rgba(220, 38, 38, 0.35);
}

.hero-contractor-section {
  position: relative;
  color: #FFF;
  padding: 90px 0;
  overflow: hidden;
  min-height: 80vh;
  display: flex;
  align-items: center;
}

.hero-video-wrapper {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 1;
}

.hero-bg-video {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.hero-video-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(to right, rgba(15, 23, 42, 0.6) 0%, rgba(15, 23, 42, 0.3) 100%);
}

.hero-contractor-section .container {
  position: relative;
  z-index: 2;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 60px;
  align-items: center;
}

.hero-badge-certified {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(15, 23, 42, 0.7);
  backdrop-filter: blur(8px);
  padding: 6px 16px;
  border-radius: var(--radius-full);
  border: 1px solid rgba(255, 255, 255, 0.25);
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  color: var(--gold-warranty);
  margin-bottom: 18px;
}

.hero-heading {
  font-size: clamp(2.2rem, 3.8vw, 3.2rem);
  color: #FFF;
  margin-bottom: 16px;
  text-shadow: 0 3px 10px rgba(0, 0, 0, 0.7);
}

.hero-subtext {
  font-size: 1.05rem;
  color: #F8FAFC;
  margin-bottom: 28px;
  line-height: 1.6;
  text-shadow: 0 2px 8px rgba(0, 0, 0, 0.7);
  max-width: 540px;
}

.hero-link-whatsapp {
  color: #FFF;
  text-decoration: none;
  font-weight: 700;
  font-size: 0.9rem;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  text-shadow: 0 2px 6px rgba(0, 0, 0, 0.8);
  transition: color 0.2s;
}

.hero-link-whatsapp:hover {
  color: #25D366;
}

.btn-primary-red {
  background: var(--red-accent);
  color: #FFF;
  padding: 13px 26px;
  border-radius: var(--radius-sm);
  text-decoration: none;
  font-weight: 700;
  font-size: 0.9rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  transition: var(--transition-fast);
  box-shadow: 0 4px 15px rgba(220, 38, 38, 0.3);
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.btn-primary-red:hover {
  background: var(--red-hover);
  transform: translateY(-1px);
}

.hero-quote-card {
  background: rgba(255, 255, 255, 0.96);
  backdrop-filter: blur(16px);
  color: var(--navy-dark);
  border-radius: var(--radius-md);
  padding: 28px;
  box-shadow: var(--shadow-lg);
  border-top: 4px solid var(--red-accent);
}

.card-heading {
  font-size: 1.3rem;
  margin-bottom: 4px;
}

.card-sub {
  font-size: 0.82rem;
  color: var(--text-muted);
  margin-bottom: 18px;
}

.form-control-input {
  width: 100%;
  padding: 12px 14px;
  border: 1px solid var(--border-light);
  border-radius: var(--radius-sm);
  font-size: 0.92rem;
  margin-bottom: 14px;
  outline: none;
  transition: var(--transition-fast);
  background: #FFF;
}

.form-control-input:focus {
  border-color: var(--blue-accent);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.12);
}

.btn-submit-red {
  width: 100%;
  background: var(--red-accent);
  color: #FFF;
  font-weight: 700;
  font-size: 0.95rem;
  padding: 14px;
  border-radius: var(--radius-sm);
  border: none;
  cursor: pointer;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  transition: var(--transition-fast);
  box-shadow: 0 4px 12px rgba(220, 38, 38, 0.3);
}

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

.btn-whatsapp-contractor {
  background: #25D366;
  color: #FFF;
  text-decoration: none;
  font-weight: 700;
  font-size: 0.95rem;
  padding: 14px 24px;
  border-radius: var(--radius-sm);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  transition: var(--transition-fast);
  box-shadow: 0 4px 15px rgba(37, 211, 102, 0.3);
}

.btn-whatsapp-contractor:hover {
  background: #1EBE5D;
  transform: translateY(-1px);
}

/* ==========================================================================
   ULTRA-PROFESSIONAL TRUST GUARANTEE BAR
   ========================================================================== */
.trust-bar-section {
  padding: 30px 0;
  background-color: #F8FAFC;
  background-image: linear-gradient(rgba(248, 250, 252, 0.90), rgba(248, 250, 252, 0.90)), url('assets/images/bg_tech_wireframe.jpg');
  background-size: cover;
  background-position: center top;
  background-attachment: fixed;
  border-bottom: 1px solid #E2E8F0;
}

.trust-bar-card {
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  border: 1px solid #E2E8F0;
  border-radius: 16px;
  padding: 20px 28px;
  box-shadow: 0 10px 30px rgba(15, 23, 42, 0.06);
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  box-sizing: border-box;
}

.trust-bar-item {
  display: flex;
  align-items: center;
  gap: 14px;
  flex: 1;
  padding: 6px 12px;
  transition: transform 0.25s ease;
}

.trust-bar-item:hover {
  transform: translateY(-2px);
}

.trust-bar-divider {
  width: 1px;
  height: 38px;
  background: #E2E8F0;
  flex-shrink: 0;
  margin: 0 8px;
}

.trust-bar-icon {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.15rem;
  flex-shrink: 0;
  transition: all 0.25s ease;
}

.trust-bar-icon.icon-blue {
  background: #EFF6FF;
  color: #2563EB;
  border: 1px solid #BFDBFE;
}

.trust-bar-icon.icon-gold {
  background: #FFFBEB;
  color: #D97706;
  border: 1px solid #FDE68A;
}

.trust-bar-icon.icon-green {
  background: #F0FDF4;
  color: #16A34A;
  border: 1px solid #BBF7D0;
}

.trust-bar-icon.icon-purple {
  background: #FAF5FF;
  color: #9333EA;
  border: 1px solid #E9D5FF;
}

.trust-bar-item:hover .trust-bar-icon {
  transform: scale(1.08);
}

.trust-bar-info {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.trust-bar-title {
  font-size: 0.92rem;
  font-weight: 800;
  color: #0F172A;
  margin: 0;
  line-height: 1.2;
  white-space: nowrap;
}

.trust-bar-sub {
  font-size: 0.75rem;
  font-weight: 500;
  color: #64748B;
  white-space: nowrap;
}

/* Responsive adjustments */
@media (max-width: 992px) {
  .trust-bar-card {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
    padding: 24px;
  }
  .trust-bar-divider {
    display: none;
  }
}

@media (max-width: 576px) {
  .trust-bar-card {
    grid-template-columns: 1fr;
    gap: 16px;
  }
}

/* General Section Layouts */
.section-padding {
  padding: 90px 0;
}

.bg-subtle {
  background-color: var(--bg-subtle);
  background-image: linear-gradient(rgba(248, 250, 252, 0.93), rgba(248, 250, 252, 0.93)), url('assets/images/bg_tech_wireframe.jpg');
  background-size: cover;
  background-position: center top;
  background-attachment: fixed;
}

.section-tag {
  font-size: 0.8rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--blue-accent);
  margin-bottom: 10px;
  display: block;
}

.section-title {
  font-size: 2.2rem;
  margin-bottom: 16px;
}

.section-desc {
  font-size: 1.05rem;
  color: var(--text-muted);
  max-width: 700px;
  margin: 0 auto 50px;
}

/* PPF Warning Card */
.ppf-warning-card {
  background: #FFF;
  border: 2px solid var(--red-accent);
  border-radius: var(--radius-md);
  padding: 24px 30px;
  margin: 40px 0;
  box-shadow: var(--shadow-md);
}

.ppf-warning-header {
  display: flex;
  align-items: center;
  gap: 14px;
  color: var(--red-accent);
  font-size: 1.2rem;
  font-weight: 800;
  margin-bottom: 12px;
}

.ppf-warning-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 25px;
  margin-top: 16px;
}

.ppf-box-negative {
  background: #FEF2F2;
  border: 1px solid #FCA5A5;
  border-radius: var(--radius-sm);
  padding: 16px;
  font-size: 0.88rem;
  color: #991B1B;
}

.ppf-box-positive {
  background: #F0FDF4;
  border: 1px solid #86EFAC;
  border-radius: var(--radius-sm);
  padding: 16px;
  font-size: 0.88rem;
  color: #166534;
}

/* DURALUX Technology Section Background */
#film-duralux {
  background-color: #FFFFFF;
  background-image: linear-gradient(rgba(255, 255, 255, 0.93), rgba(255, 255, 255, 0.93)), url('assets/images/bg_tech_wireframe.jpg');
  background-size: cover;
  background-position: center top;
  background-attachment: fixed;
}

/* ShieldX Section Background */
.shieldx-section {
  padding: 95px 0;
  background-color: #0F172A;
  background-image: linear-gradient(135deg, rgba(15, 23, 42, 0.92) 0%, rgba(30, 58, 138, 0.88) 100%), url('assets/images/bg_tech_wireframe.jpg');
  background-size: cover;
  background-position: center top;
  background-attachment: fixed;
  color: #FFF;
}

/* Technical Comparison Section Background */
#comparatif {
  background-color: #FFFFFF;
  background-image: linear-gradient(rgba(255, 255, 255, 0.93), rgba(255, 255, 255, 0.93)), url('assets/images/bg_tech_wireframe.jpg');
  background-size: cover;
  background-position: center top;
  background-attachment: fixed;
}

.shieldx-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 50px;
  align-items: center;
}

.nano-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(217, 119, 6, 0.2);
  border: 1px solid var(--gold-warranty);
  color: var(--gold-warranty);
  padding: 6px 16px;
  border-radius: var(--radius-full);
  font-size: 0.8rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 20px;
}

.shieldx-title {
  font-size: 2.3rem;
  color: #FFF;
  margin-bottom: 20px;
}

.shieldx-desc {
  font-size: 1.05rem;
  color: #E2E8F0;
  margin-bottom: 30px;
  line-height: 1.7;
}

.shieldx-features-list {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

.shieldx-feature-card {
  background: rgba(255, 255, 255, 0.07);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: var(--radius-md);
  padding: 24px;
}

.shieldx-feature-card h4 {
  font-size: 1.1rem;
  color: #FFF;
  margin-bottom: 8px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.shieldx-feature-card h4 i {
  color: var(--gold-warranty);
}

.shieldx-feature-card p {
  font-size: 0.88rem;
  color: #CBD5E1;
  line-height: 1.5;
}

/* Sectors Section (Residential vs Commercial) */
.sectors-section {
  padding: 90px 0;
  background: #FFF;
}

.sectors-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  margin-top: 40px;
}

.sector-card-item {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 25px;
  align-items: center;
  background: var(--bg-subtle);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  padding: 24px;
  transition: var(--transition-normal);
}

.sector-card-item:hover {
  box-shadow: var(--shadow-md);
  border-color: var(--border-navy);
  transform: translateY(-2px);
}

.sector-img {
  width: 100%;
  height: 240px;
  object-fit: cover;
  border-radius: var(--radius-sm);
  display: block;
}

.sector-content h3 {
  font-size: 1.25rem;
  color: var(--navy-dark);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 12px;
}

.sector-content p {
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.6;
  margin-bottom: 20px;
}

.btn-sector-action {
  display: inline-block;
  background: var(--red-accent);
  color: #FFF;
  padding: 10px 20px;
  border-radius: var(--radius-sm);
  text-decoration: none;
  font-weight: 700;
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  transition: var(--transition-fast);
}

.btn-sector-action:hover {
  background: var(--red-hover);
}

/* Comparison Table */
.comparison-table-wrapper {
  background: #FFF;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-light);
  box-shadow: var(--shadow-md);
  overflow: hidden;
  margin-top: 30px;
}

table.comparison-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
}

table.comparison-table th {
  background: var(--navy-dark);
  color: #FFF;
  padding: 18px 24px;
  font-size: 1rem;
}

table.comparison-table td {
  padding: 18px 24px;
  border-bottom: 1px solid var(--border-light);
  font-size: 0.95rem;
}

table.comparison-table tr:last-child td {
  border-bottom: none;
}

.check-yes {
  color: var(--green-success);
  font-weight: 700;
}

.check-no {
  color: var(--red-accent);
  font-weight: 700;
}

.check-warn {
  color: #D97706;
  font-weight: 700;
}

table.comparison-table th.col-duralux {
  background: linear-gradient(135deg, #0F172A 0%, #1E3A8A 100%);
  color: #FFFFFF;
  border-bottom: 3px solid var(--blue-accent);
}

table.comparison-table td.col-duralux-bg {
  background: rgba(37, 99, 235, 0.04);
  font-weight: 700;
}

/* Calculator Section */
.calc-card-contractor {
  background: #FFFFFF;
  border: 1px solid var(--border-light);
  border-radius: 20px;
  padding: 40px;
  box-shadow: 0 20px 45px rgba(15, 23, 42, 0.08);
  margin-top: 30px;
}

.calc-grid-layout {
  display: grid;
  grid-template-columns: 1.25fr 0.75fr;
  gap: 40px;
}

@media (max-width: 992px) {
  .calc-grid-layout {
    grid-template-columns: 1fr;
    gap: 30px;
  }
}

.calc-form-controls {
  display: flex;
  flex-direction: column;
  gap: 28px;
}

.calc-step-group {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.calc-step-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 4px;
}

.calc-step-badge {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--navy-primary), var(--blue-accent));
  color: #FFFFFF;
  font-weight: 800;
  font-size: 0.9rem;
  box-shadow: 0 4px 10px rgba(37, 99, 235, 0.3);
}

.calc-step-title {
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-main);
  margin: 0;
  line-height: 1.2;
}

.calc-step-subtitle {
  font-size: 0.8rem;
  color: var(--text-light);
  display: block;
}

/* Option Buttons Grid Layouts */
.calc-opt-grid {
  display: grid;
  gap: 12px;
}

.calc-grid-2 {
  grid-template-columns: repeat(2, 1fr);
}

.calc-grid-3 {
  grid-template-columns: repeat(3, 1fr);
}

@media (max-width: 640px) {
  .calc-grid-2, .calc-grid-3 {
    grid-template-columns: 1fr;
  }
}

/* Option Button Base Style */
.calc-opt-btn {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 16px;
  background: #FFFFFF;
  border: 2px solid #E2E8F0;
  border-radius: 12px;
  cursor: pointer;
  transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  text-align: left;
  position: relative;
  overflow: hidden;
  box-shadow: 0 2px 5px rgba(0, 0, 0, 0.02);
}

.calc-opt-content {
  display: flex;
  align-items: center;
  gap: 12px;
  font-weight: 600;
  font-size: 0.9rem;
  color: var(--text-main);
}

.calc-opt-icon {
  font-size: 1.15rem;
  color: var(--blue-accent);
  transition: color 0.25s ease, transform 0.25s ease;
  width: 22px;
  text-align: center;
}

.calc-btn-title {
  display: block;
  font-weight: 700;
  font-size: 0.88rem;
  color: var(--text-main);
  line-height: 1.2;
}

.calc-btn-tag {
  display: block;
  font-size: 0.73rem;
  color: var(--text-light);
  font-weight: 500;
  margin-top: 2px;
}

.calc-check-icon {
  font-size: 1.1rem;
  color: #CBD5E1;
  transition: all 0.25s ease;
  opacity: 0.4;
}

/* Option Button HOVER State */
.calc-opt-btn:hover {
  border-color: #94A3B8;
  background: #F8FAFC;
  transform: translateY(-2px);
  box-shadow: 0 6px 16px rgba(15, 23, 42, 0.06);
}

.calc-opt-btn:hover .calc-opt-icon {
  transform: scale(1.15);
}

/* Option Button ACTIVE / SELECTED State */
.calc-opt-btn.active {
  background: linear-gradient(135deg, #0F172A 0%, #1E293B 100%);
  border-color: var(--blue-accent);
  box-shadow: 0 8px 24px rgba(37, 99, 235, 0.28), 0 0 0 1px var(--blue-accent);
  transform: translateY(-2px);
}

.calc-opt-btn.active .calc-opt-content,
.calc-opt-btn.active .calc-btn-title {
  color: #FFFFFF;
}

.calc-opt-btn.active .calc-btn-tag {
  color: #94A3B8;
}

.calc-opt-btn.active .calc-opt-icon {
  color: #60A5FA;
  transform: scale(1.15);
}

.calc-opt-btn.active .calc-check-icon {
  color: #60A5FA;
  opacity: 1;
  transform: scale(1.2);
}

/* Area Control Styling */
.calc-area-control {
  display: flex;
  align-items: center;
  gap: 20px;
  background: #F8FAFC;
  padding: 16px;
  border-radius: 14px;
  border: 1px solid var(--border-light);
}

.calc-slider-wrapper {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.calc-range-input {
  width: 100%;
  height: 8px;
  background: #E2E8F0;
  border-radius: 4px;
  outline: none;
  accent-color: var(--blue-accent);
  cursor: pointer;
}

.calc-slider-labels {
  display: flex;
  justify-content: space-between;
  font-size: 0.75rem;
  color: var(--text-light);
  font-weight: 600;
}

.calc-area-number-box {
  display: flex;
  align-items: center;
  gap: 6px;
  background: #FFFFFF;
  padding: 8px 12px;
  border: 2px solid var(--blue-accent);
  border-radius: 10px;
  box-shadow: 0 2px 8px rgba(37, 99, 235, 0.15);
}

.calc-number-input {
  width: 55px;
  border: none;
  outline: none;
  font-size: 1.15rem;
  font-weight: 800;
  color: var(--text-main);
  text-align: center;
  background: transparent;
}

.calc-unit {
  font-weight: 700;
  font-size: 0.9rem;
  color: var(--blue-accent);
}

/* Area Quick Presets */
.calc-presets {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
  margin-top: 8px;
}

.calc-presets-label {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-light);
}

.calc-preset-btn {
  padding: 6px 14px;
  background: #FFFFFF;
  border: 1px solid #CBD5E1;
  border-radius: 20px;
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--text-muted);
  cursor: pointer;
  transition: all 0.2s ease;
}

.calc-preset-btn:hover {
  background: #EFF6FF;
  border-color: var(--blue-accent);
  color: var(--blue-accent);
}

.calc-preset-btn.active {
  background: var(--blue-accent);
  border-color: var(--blue-accent);
  color: #FFFFFF;
  box-shadow: 0 4px 10px rgba(37, 99, 235, 0.3);
}

/* Output Card Redesign */
.calc-output-card {
  background: linear-gradient(155deg, #0F172A 0%, #1E293B 100%);
  color: #FFFFFF;
  padding: 32px;
  border-radius: 18px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  box-shadow: 0 15px 35px rgba(15, 23, 42, 0.3);
  border: 1px solid rgba(255, 255, 255, 0.1);
  position: relative;
  overflow: hidden;
}

.calc-output-card::before {
  content: '';
  position: absolute;
  top: -80px;
  right: -80px;
  width: 200px;
  height: 200px;
  background: radial-gradient(circle, rgba(37, 99, 235, 0.25) 0%, transparent 70%);
  pointer-events: none;
}

.calc-output-header {
  text-align: center;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  padding-bottom: 20px;
}

.calc-output-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.15);
  padding: 5px 14px;
  border-radius: 20px;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: #94A3B8;
  margin-bottom: 12px;
}

.calc-price-main {
  margin: 10px 0;
}

.calc-price-num {
  font-size: 3.2rem;
  font-weight: 900;
  color: var(--gold-warranty);
  letter-spacing: -0.02em;
  text-shadow: 0 0 20px rgba(217, 119, 6, 0.2);
  transition: all 0.3s ease;
}

.calc-price-symbol {
  font-size: 1.1rem;
  font-weight: 700;
  color: #E2E8F0;
  margin-left: 8px;
}

.calc-currency-box {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.15);
  padding: 6px 14px;
  border-radius: 8px;
  font-size: 0.85rem;
  color: #94A3B8;
}

.calc-currency-select {
  background: transparent;
  border: none;
  color: #FFFFFF;
  font-weight: 600;
  font-size: 0.85rem;
  outline: none;
  cursor: pointer;
}

.calc-currency-select option {
  background: #0F172A;
  color: #FFFFFF;
}

/* Detailed Summary List */
.calc-summary-card {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 14px;
  padding: 18px;
  margin: 20px 0;
}

.calc-summary-title {
  font-size: 0.82rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: #94A3B8;
  margin-bottom: 14px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.calc-summary-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
  font-size: 0.88rem;
}

.calc-summary-list li {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-bottom: 8px;
  border-bottom: 1px dashed rgba(255, 255, 255, 0.08);
}

.calc-summary-list li:last-child {
  border-bottom: none;
  padding-bottom: 0;
}

.calc-sum-label {
  color: #94A3B8;
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.82rem;
}

.calc-sum-label i {
  color: var(--blue-accent);
  width: 14px;
}

.calc-sum-val {
  color: #FFFFFF;
  font-weight: 700;
  text-align: right;
}

.calc-included-banner {
  margin-top: 14px;
  padding: 10px 12px;
  background: rgba(217, 119, 6, 0.12);
  border: 1px solid rgba(217, 119, 6, 0.3);
  border-radius: 8px;
  font-size: 0.78rem;
  font-weight: 700;
  color: #FCD34D;
  display: flex;
  align-items: center;
  gap: 8px;
}

.text-gold {
  color: #FBBF24;
}

/* Action Buttons & Trust */
.calc-actions {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.btn-whatsapp-contractor {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  background: linear-gradient(135deg, #22C55E, #16A34A);
  color: #FFFFFF;
  padding: 16px 20px;
  border-radius: 12px;
  font-weight: 800;
  font-size: 0.95rem;
  text-decoration: none;
  box-shadow: 0 8px 20px rgba(34, 197, 94, 0.3);
  transition: all 0.25s ease;
}

.btn-whatsapp-contractor:hover {
  background: linear-gradient(135deg, #16A34A, #15803D);
  transform: translateY(-2px);
  box-shadow: 0 12px 25px rgba(34, 197, 94, 0.4);
  color: #FFFFFF;
}

.calc-trust-bullets {
  display: flex;
  justify-content: space-around;
  font-size: 0.72rem;
  color: #94A3B8;
  margin-top: 4px;
}

.calc-trust-bullets span {
  display: flex;
  align-items: center;
  gap: 5px;
}

.calc-trust-bullets i {
  color: #60A5FA;
}

.price-val {
  font-size: 3.2rem;
  font-weight: 800;
  color: var(--gold-warranty);
  margin: 10px 0;
}

/* Before / After Stain Simulator Slider */
.simulator-wrapper {
  margin-top: 40px;
}

.stain-slider-box {
  position: relative;
  width: 100%;
  max-width: 960px;
  height: 480px;
  margin: 0 auto;
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 2px solid var(--navy-primary);
  box-shadow: var(--shadow-lg);
}

.stain-img-layer {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-size: cover;
  background-position: center;
}

.stain-img-layer.before-layer {
  background-image: linear-gradient(rgba(180, 50, 50, 0.45), rgba(180, 50, 50, 0.45)), url('https://images.unsplash.com/photo-1600585154340-be6161a56a0c?auto=format&fit=crop&w=1200&q=80');
}

.stain-img-layer.after-layer {
  background-image: url('https://images.unsplash.com/photo-1600585154340-be6161a56a0c?auto=format&fit=crop&w=1200&q=80');
  width: 50%;
  border-right: 4px solid var(--gold-warranty);
}

.stain-handle-bar {
  position: absolute;
  top: 0;
  bottom: 0;
  left: 50%;
  width: 40px;
  transform: translateX(-50%);
  cursor: ew-resize;
  display: flex;
  align-items: center;
  justify-content: center;
}

.stain-handle-btn {
  width: 44px;
  height: 44px;
  background: var(--gold-warranty);
  color: #FFF;
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  box-shadow: 0 0 20px rgba(217, 119, 6, 0.6);
}

/* ==========================================================================
   ULTRA-READABLE MASTERCLASS GUIDE SECTION
   ========================================================================== */
.guide-section {
  padding: 90px 0;
  background: #F8FAFC;
  border-top: 1px solid #E2E8F0;
}

.guide-tabs {
  display: flex;
  justify-content: center;
  gap: 12px;
  margin-bottom: 36px;
  flex-wrap: wrap;
}

.guide-tab-btn {
  background: #FFFFFF;
  border: 1px solid #CBD5E1;
  color: #334155;
  padding: 14px 24px;
  border-radius: 50px;
  font-weight: 700;
  font-size: 0.92rem;
  cursor: pointer;
  transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  box-shadow: 0 4px 12px rgba(15, 23, 42, 0.04);
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.guide-tab-btn:hover {
  border-color: #2563EB;
  color: #2563EB;
  transform: translateY(-2px);
}

.guide-tab-btn.active {
  background: linear-gradient(135deg, #0F172A 0%, #1D4ED8 100%);
  color: #FFFFFF;
  border-color: transparent;
  box-shadow: 0 8px 20px rgba(29, 78, 216, 0.3);
  transform: translateY(-2px);
}

.guide-card-box {
  background: #FFFFFF;
  border: 1px solid #E2E8F0;
  border-radius: 20px;
  padding: 40px;
  box-shadow: 0 15px 35px rgba(15, 23, 42, 0.06);
}

.tab-header-banner {
  background: #F1F5F9;
  border-left: 4px solid #2563EB;
  padding: 20px 24px;
  border-radius: 12px;
  margin-bottom: 32px;
}

.tab-header-banner h3 {
  font-size: 1.3rem;
  color: #0F172A;
  font-weight: 800;
  margin-bottom: 6px;
}

.tab-header-banner p {
  color: #64748B;
  font-size: 0.95rem;
  margin: 0;
}

/* Finitions Tab Cards */
.finition-cards-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.finition-card {
  background: #FFFFFF;
  border: 1px solid #E2E8F0;
  border-radius: 16px;
  padding: 28px 24px;
  box-shadow: 0 8px 20px rgba(15, 23, 42, 0.04);
  transition: all 0.3s ease;
  display: flex;
  flex-direction: column;
}

.finition-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 15px 30px rgba(15, 23, 42, 0.08);
}

.finition-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  border-radius: 30px;
  font-weight: 800;
  font-size: 0.9rem;
  margin-bottom: 16px;
}

.badge-blue { background: #EFF6FF; color: #2563EB; border: 1px solid #BFDBFE; }
.badge-gold { background: #FFFBEB; color: #D97706; border: 1px solid #FDE68A; }
.badge-green { background: #F0FDF4; color: #16A34A; border: 1px solid #BBF7D0; }

.finition-desc {
  font-size: 0.9rem;
  color: #475569;
  line-height: 1.6;
  margin-bottom: 20px;
}

.finition-checklist {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.finition-checklist li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 0.88rem;
  color: #334155;
  line-height: 1.5;
}

.finition-checklist li i {
  color: #16A34A;
  margin-top: 3px;
  flex-shrink: 0;
}

.finition-row-content {
  display: flex;
  align-items: flex-start;
  gap: 6px;
  flex: 1;
}

.finition-label {
  font-weight: 800;
  color: #0F172A;
  white-space: nowrap;
  flex-shrink: 0;
}

.finition-val {
  color: #475569;
  flex: 1;
}

/* Entretien Tab (DOs & DON'Ts) */
.entretien-dual-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 28px;
}

.entretien-card {
  border-radius: 16px;
  border: 1px solid #E2E8F0;
  overflow: hidden;
  background: #FFFFFF;
}

.do-card { border-top: 4px solid #16A34A; box-shadow: 0 8px 20px rgba(22, 163, 74, 0.06); }
.dont-card { border-top: 4px solid #DC2626; box-shadow: 0 8px 20px rgba(220, 38, 38, 0.06); }

.entretien-card-header {
  padding: 20px 24px;
  display: flex;
  align-items: center;
  gap: 12px;
}

.green-header { background: #F0FDF4; color: #16A34A; }
.red-header { background: #FEF2F2; color: #DC2626; }

.entretien-card-header h4 {
  font-size: 1.1rem;
  font-weight: 800;
  margin: 0;
}

.entretien-list {
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.entretien-item {
  display: flex;
  gap: 14px;
  align-items: flex-start;
}

.entretien-icon {
  width: 38px;
  height: 38px;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  flex-shrink: 0;
}

.icon-do { background: #DCFCE7; color: #15803D; }
.icon-dont { background: #FEE2E2; color: #B91C1C; }

.entretien-item strong {
  display: block;
  font-size: 0.95rem;
  color: #0F172A;
  margin-bottom: 4px;
}

.entretien-item p {
  font-size: 0.88rem;
  color: #64748B;
  margin: 0;
  line-height: 1.5;
}

/* Timeline Installation Tab */
.timeline-steps-container {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.timeline-step-card {
  display: flex;
  gap: 24px;
  background: #F8FAFC;
  border: 1px solid #E2E8F0;
  border-radius: 16px;
  padding: 24px 28px;
  align-items: flex-start;
  transition: transform 0.25s ease;
}

.timeline-step-card:hover {
  transform: translateX(6px);
  background: #FFFFFF;
  border-color: #2563EB;
}

.timeline-step-badge {
  width: 52px;
  height: 52px;
  border-radius: 14px;
  background: #EFF6FF;
  color: #2563EB;
  font-size: 1.3rem;
  font-weight: 900;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  border: 1px solid #BFDBFE;
}

.timeline-step-badge.badge-blue { background: #EFF6FF; color: #2563EB; border-color: #BFDBFE; }
.timeline-step-badge.badge-gold { background: #FFFBEB; color: #D97706; border-color: #FDE68A; }

.timeline-step-content {
  flex: 1;
}

.timeline-step-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 8px;
  flex-wrap: wrap;
  gap: 10px;
}

.timeline-step-top h4 {
  font-size: 1.1rem;
  font-weight: 800;
  color: #0F172A;
  margin: 0;
}

.duration-chip {
  background: #FFFFFF;
  border: 1px solid #CBD5E1;
  padding: 4px 12px;
  border-radius: 20px;
  font-size: 0.8rem;
  font-weight: 700;
  color: #475569;
}

.chip-blue { border-color: #BFDBFE; color: #2563EB; background: #EFF6FF; }
.chip-gold { border-color: #FDE68A; color: #D97706; background: #FFFBEB; }

.timeline-step-content p {
  font-size: 0.9rem;
  color: #475569;
  margin-bottom: 12px;
  line-height: 1.6;
}

.step-footer-tag {
  font-size: 0.82rem;
  font-weight: 700;
  color: #16A34A;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.tag-blue { color: #2563EB; }
.tag-gold { color: #D97706; }

/* Mesures Layout Grid */
.mesures-layout-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 32px;
}

.mesures-info-box h4 {
  font-size: 1.15rem;
  font-weight: 800;
  color: #0F172A;
  margin-bottom: 10px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.formula-example-card {
  background: #F0F9FF;
  border: 1px solid #BAE6FD;
  border-radius: 14px;
  padding: 20px;
  margin-bottom: 24px;
}

.formula-title { font-weight: 800; color: #0369A1; font-size: 0.9rem; margin-bottom: 6px; }
.formula-code { font-family: monospace; font-size: 1.15rem; font-weight: 800; color: #0F172A; margin-bottom: 6px; }
.formula-note { font-size: 0.85rem; color: #0284C7; }

.mesure-tips-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.mesure-tip-item {
  display: flex;
  gap: 14px;
  align-items: flex-start;
}

.mesure-tip-item i {
  font-size: 1.2rem;
  margin-top: 2px;
  flex-shrink: 0;
}

.mesure-tip-item strong {
  display: block;
  font-size: 0.92rem;
  color: #0F172A;
  margin-bottom: 2px;
}

.mesure-tip-item span {
  font-size: 0.88rem;
  color: #64748B;
  line-height: 1.5;
}

.mesures-action-card {
  background: linear-gradient(180deg, #FFFFFF 0%, #F8FAFC 100%);
  border: 1px solid #E2E8F0;
  border-radius: 18px;
  padding: 32px 28px;
  box-shadow: 0 10px 25px rgba(15, 23, 42, 0.05);
  position: relative;
}

.action-card-badge {
  display: inline-block;
  background: #DCFCE7;
  color: #15803D;
  font-weight: 800;
  font-size: 0.78rem;
  text-transform: uppercase;
  padding: 4px 12px;
  border-radius: 20px;
  margin-bottom: 12px;
}

@media (max-width: 992px) {
  .finition-cards-grid, .entretien-dual-grid, .mesures-layout-grid {
    grid-template-columns: 1fr;
  }
}

/* Footer */
footer.footer-contractor {
  background: var(--navy-dark);
  color: #94A3B8;
  padding: 60px 0 25px;
  font-size: 0.9rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 40px;
  margin-bottom: 40px;
}

.footer-col h5 {
  color: #FFF;
  font-size: 1.1rem;
  margin-bottom: 20px;
}

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

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

.footer-links a {
  color: #94A3B8;
  text-decoration: none;
  transition: var(--transition-fast);
}

.footer-links a:hover {
  color: #FFF;
}

.footer-bottom-bar {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: 25px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
}

@media (max-width: 992px) {
  .hero-grid, .calc-grid-layout, .footer-grid, .shieldx-grid, .sectors-grid, .ppf-warning-grid, .guide-grid-3col {
    grid-template-columns: 1fr;
  }
  .nav-menu {
    display: none;
  }
  .stain-slider-box {
    height: 360px;
  }
}