/* 
========================================================================
   FLAMESPEC ENGINEERING - PREMIUM STYLE SHEET
   Design System, Components, Layouts, and Animations
========================================================================
*/

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

/* --- CUSTOM VARIABLES --- */
:root {
  --primary: #e31b23;
  --primary-hover: #b8141a;
  --primary-light: rgba(227, 27, 35, 0.08);
  --primary-glow: rgba(227, 27, 35, 0.35);
  
  --dark: #0f0f11;
  --dark-accent: #17171c;
  --dark-card: #1c1c24;
  --dark-hover: #23232c;
  
  --light: #f6f8fa;
  --light-accent: #ffffff;
  --light-card: #ffffff;
  
  --text-dark: #f8fafc;
  --text-light: #0f172a;
  --text-muted-dark: #94a3b8;
  --text-muted-light: #64748b;
  
  --border-dark: rgba(255, 255, 255, 0.08);
  --border-light: rgba(15, 23, 42, 0.08);
  
  --font-headings: 'Outfit', 'Inter', sans-serif;
  --font-body: 'Inter', sans-serif;
  
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
  
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.04);
  --shadow-md: 0 10px 25px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 20px 40px rgba(0, 0, 0, 0.15);
  --shadow-glow: 0 0 20px rgba(227, 27, 35, 0.2);
  
  --glass-bg: rgba(15, 15, 17, 0.8);
  --glass-border: rgba(255, 255, 255, 0.05);
  --glass-blur: 15px;
  
  --max-width: 1200px;
  --border-radius: 12px;
  --border-radius-sm: 6px;
  --border-radius-lg: 20px;
}

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

html {
  scroll-behavior: smooth;
}

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

/* Selection highlight */
::selection {
  background-color: var(--primary);
  color: #fff;
}

/* Scrollbar styling */
::-webkit-scrollbar {
  width: 10px;
}
::-webkit-scrollbar-track {
  background: var(--dark);
}
::-webkit-scrollbar-thumb {
  background: #2a2a35;
  border-radius: 5px;
}
::-webkit-scrollbar-thumb:hover {
  background: var(--primary);
}

/* --- TYPOGRAPHY --- */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-headings);
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: 1rem;
}

h1 {
  font-size: clamp(2.5rem, 5vw, 4.5rem);
  font-weight: 800;
  letter-spacing: -0.02em;
}

h2 {
  font-size: clamp(1.8rem, 3.5vw, 2.8rem);
  font-weight: 700;
  letter-spacing: -0.01em;
}

h3 {
  font-size: clamp(1.3rem, 2vw, 1.8rem);
}

p {
  font-size: 1rem;
  color: var(--text-muted-dark);
  margin-bottom: 1.5rem;
  font-weight: 400;
}

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

/* --- UTILITY CLASSES --- */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 2rem;
  width: 100%;
}

.section {
  padding: 8rem 0;
  position: relative;
}

.section-alt {
  background-color: var(--dark-accent);
}

.section-title-wrapper {
  margin-bottom: 4rem;
  max-width: 700px;
}

.section-subtitle {
  color: var(--primary);
  text-transform: uppercase;
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 0.2em;
  margin-bottom: 0.5rem;
  display: block;
}

.section-title {
  margin-bottom: 1rem;
}

.highlight {
  color: var(--primary);
}

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

.text-center .section-title-wrapper {
  margin-left: auto;
  margin-right: auto;
}

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

/* --- BUTTONS --- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.85rem 2rem;
  border-radius: var(--border-radius);
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  transition: var(--transition);
  border: 2px solid transparent;
  gap: 0.5rem;
}

.btn-primary {
  background-color: var(--primary);
  color: #ffffff;
  box-shadow: var(--shadow-glow);
}

.btn-primary:hover {
  background-color: var(--primary-hover);
  transform: translateY(-2px);
  box-shadow: 0 10px 25px rgba(227, 27, 35, 0.4);
}

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

.btn-secondary:hover {
  background-color: rgba(255, 255, 255, 0.05);
  border-color: rgba(255, 255, 255, 0.3);
  transform: translateY(-2px);
}

.btn-text {
  padding: 0;
  color: var(--primary);
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
}

.btn-text:hover {
  color: var(--text-dark);
}

.btn-text::after {
  content: '→';
  transition: var(--transition);
}

.btn-text:hover::after {
  transform: translateX(4px);
}

/* --- HEADER / NAVIGATION --- */
.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background-color: rgba(15, 15, 17, 0.6);
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
  border-bottom: 1px solid var(--glass-border);
  transition: var(--transition);
}

.header.scrolled {
  background-color: rgba(15, 15, 17, 0.95);
  padding: 0.5rem 0;
  box-shadow: var(--shadow-md);
}

.nav-wrapper {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 80px;
  transition: var(--transition);
}

.header.scrolled .nav-wrapper {
  height: 70px;
}

/* Logo CSS */
.logo {
  display: flex;
  flex-direction: column;
  line-height: 1;
}

.logo-text {
  font-family: var(--font-headings);
  font-size: 1.5rem;
  font-weight: 800;
  letter-spacing: -0.01em;
  color: var(--text-dark);
}

.logo-text span {
  color: var(--primary);
}

.logo-tagline {
  font-size: 0.55rem;
  text-transform: uppercase;
  letter-spacing: 0.36em;
  color: var(--text-muted-dark);
  margin-top: 0.15rem;
  font-weight: 500;
}

/* Nav Links */
.nav-list {
  display: flex;
  gap: 2.5rem;
  list-style: none;
}

.nav-link {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text-muted-dark);
  position: relative;
  padding: 0.5rem 0;
}

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

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--primary);
  transition: var(--transition);
}

.nav-link:hover::after, .nav-link.active::after {
  width: 100%;
}

/* Mobile Menu Toggle */
.mobile-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  width: 30px;
  height: 24px;
  position: relative;
  z-index: 1001;
}

.mobile-toggle span {
  display: block;
  width: 100%;
  height: 2px;
  background-color: var(--text-dark);
  border-radius: 2px;
  position: absolute;
  transition: var(--transition);
}

.mobile-toggle span:nth-child(1) { top: 0; }
.mobile-toggle span:nth-child(2) { top: 11px; }
.mobile-toggle span:nth-child(3) { top: 22px; }

.mobile-toggle.active span:nth-child(1) {
  transform: rotate(45deg);
  top: 11px;
}

.mobile-toggle.active span:nth-child(2) {
  opacity: 0;
}

.mobile-toggle.active span:nth-child(3) {
  transform: rotate(-45deg);
  top: 11px;
}

/* --- HERO SECTION --- */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  padding: 120px 0 80px 0;
}

.hero-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, rgba(15, 15, 17, 0.95) 30%, rgba(15, 15, 17, 0.7) 100%);
  z-index: 2;
}

.hero-bg {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  transform: scale(1.05);
  animation: zoom-out 20s infinite alternate;
  z-index: 1;
}

.hero .container {
  position: relative;
  z-index: 3;
}

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

.hero-tag {
  display: inline-block;
  padding: 0.5rem 1.25rem;
  background-color: rgba(227, 27, 35, 0.1);
  border: 1px solid rgba(227, 27, 35, 0.2);
  color: var(--primary);
  border-radius: 50px;
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  margin-bottom: 1.5rem;
  animation: fade-in-up 0.8s ease forwards;
}

.hero-title {
  margin-bottom: 1.5rem;
  opacity: 0;
  animation: fade-in-up 0.8s ease 0.2s forwards;
}

.hero-description {
  font-size: 1.2rem;
  color: var(--text-muted-dark);
  margin-bottom: 2.5rem;
  max-width: 600px;
  opacity: 0;
  animation: fade-in-up 0.8s ease 0.4s forwards;
}

.hero-actions {
  display: flex;
  gap: 1rem;
  opacity: 0;
  animation: fade-in-up 0.8s ease 0.6s forwards;
}

/* Scroll indicator */
.scroll-indicator {
  position: absolute;
  bottom: 2.5rem;
  left: 50%;
  transform: translateX(-50%);
  z-index: 3;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.75rem;
  color: var(--text-muted-dark);
  letter-spacing: 0.25em;
  text-transform: uppercase;
}

.scroll-indicator::after {
  content: '';
  width: 2px;
  height: 40px;
  background: linear-gradient(to bottom, var(--primary), transparent);
  animation: scroll-line 1.5s infinite;
  display: block;
}

/* --- STATS GRID --- */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 2rem;
  margin-top: 4rem;
}

.stat-card {
  background-color: var(--dark-card);
  border: 1px solid var(--border-dark);
  border-radius: var(--border-radius);
  padding: 2.5rem 2rem;
  text-align: center;
  transition: var(--transition);
}

.stat-card:hover {
  transform: translateY(-5px);
  border-color: var(--primary);
  box-shadow: var(--shadow-glow);
}

.stat-num {
  font-family: var(--font-headings);
  font-size: 3.5rem;
  font-weight: 800;
  color: var(--primary);
  line-height: 1;
  margin-bottom: 0.5rem;
}

.stat-title {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-dark);
  margin-bottom: 0.25rem;
}

.stat-desc {
  font-size: 0.85rem;
  color: var(--text-muted-dark);
}

/* --- CARDS & GRID LAYOUTS --- */
.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 4rem;
  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;
}

/* Image content block */
.img-block {
  position: relative;
  border-radius: var(--border-radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}

.img-block img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: var(--transition-slow);
}

.img-block:hover img {
  transform: scale(1.03);
}

.img-block-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(to top, rgba(15, 15, 17, 0.9) 0%, rgba(15, 15, 17, 0.2) 60%);
  z-index: 2;
}

/* Core Strength / Feature Card */
.feature-card {
  background-color: var(--dark-card);
  border: 1px solid var(--border-dark);
  border-radius: var(--border-radius);
  padding: 2.5rem;
  transition: var(--transition);
  height: 100%;
  display: flex;
  flex-direction: column;
}

.feature-card:hover {
  transform: translateY(-5px);
  border-color: rgba(227, 27, 35, 0.3);
  box-shadow: var(--shadow-md);
}

.feature-icon {
  width: 50px;
  height: 50px;
  background-color: var(--primary-light);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.5rem;
  color: var(--primary);
  font-size: 1.5rem;
}

.feature-title {
  font-size: 1.25rem;
  margin-bottom: 1rem;
}

.feature-desc {
  font-size: 0.95rem;
  margin-bottom: 0;
}

/* --- ABOUT PAGE (Vision/Mission, Safety) --- */
.vision-mission {
  margin-top: 4rem;
}

.vm-card {
  background: var(--dark-accent);
  border-radius: var(--border-radius-lg);
  padding: 3rem;
  border: 1px solid var(--border-dark);
}

.vm-header {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  margin-bottom: 1.5rem;
}

.vm-icon {
  width: 60px;
  height: 60px;
  object-fit: contain;
}

.vm-title {
  margin-bottom: 0;
  font-size: 1.5rem;
}

.vm-text {
  font-size: 1.05rem;
  margin-bottom: 0;
}

/* --- ORGANIZATIONAL CHART (CSS) --- */
.team-hierarchy {
  margin-top: 4rem;
  overflow-x: auto;
  padding: 2rem 0;
}

.chart-wrapper {
  display: flex;
  flex-direction: column;
  align-items: center;
  min-width: 800px;
}

.chart-node {
  background-color: var(--dark-card);
  border: 1px solid var(--border-dark);
  border-radius: var(--border-radius);
  padding: 1.25rem 2rem;
  text-align: center;
  position: relative;
  min-width: 200px;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
}

.chart-node:hover {
  border-color: var(--primary);
  transform: translateY(-2px);
  box-shadow: var(--shadow-glow);
}

.chart-node.director {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-hover) 100%);
  border: none;
  color: #fff;
}

.chart-node.director .node-title {
  color: #fff;
  opacity: 0.8;
}

.chart-node.director .node-name {
  color: #fff;
  font-size: 1.2rem;
}

.node-title {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--primary);
  font-weight: 700;
  margin-bottom: 0.25rem;
}

.node-name {
  font-family: var(--font-headings);
  font-weight: 600;
  font-size: 1rem;
}

/* Connector Lines */
.chart-connector {
  width: 2px;
  height: 30px;
  background-color: rgba(255, 255, 255, 0.15);
}

.chart-row {
  display: flex;
  justify-content: center;
  gap: 3rem;
  width: 100%;
  position: relative;
}

.chart-row::before {
  content: '';
  position: absolute;
  top: -15px;
  left: 15%;
  right: 15%;
  height: 2px;
  background-color: rgba(255, 255, 255, 0.15);
}

.chart-branch {
  display: flex;
  flex-direction: column;
  align-items: center;
  position: relative;
}

.chart-branch::before {
  content: '';
  position: absolute;
  top: -15px;
  left: 50%;
  transform: translateX(-50%);
  width: 2px;
  height: 15px;
  background-color: rgba(255, 255, 255, 0.15);
}

.chart-row.projects-row {
  gap: 2rem;
}

.chart-row.projects-row::before {
  left: 10%;
  right: 10%;
}

.chart-node.project-node {
  background-color: var(--dark-accent);
  border-top: 3px solid var(--primary);
}

.project-details {
  font-size: 0.8rem;
  color: var(--text-muted-dark);
  margin-top: 0.5rem;
  border-top: 1px solid var(--border-dark);
  padding-top: 0.5rem;
}

/* --- SERVICES & SPECIFIC APPLICATION STYLES --- */
.service-hero {
  height: 50vh;
  min-height: 400px;
}

.service-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2rem;
}

.service-card {
  background-color: var(--dark-card);
  border: 1px solid var(--border-dark);
  border-radius: var(--border-radius);
  overflow: hidden;
  transition: var(--transition-slow);
  display: flex;
  flex-direction: column;
  height: 100%;
}

.service-card:hover {
  transform: translateY(-8px);
  border-color: rgba(227, 27, 35, 0.25);
  box-shadow: var(--shadow-md);
}

.service-img {
  height: 240px;
  position: relative;
  overflow: hidden;
}

.service-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: var(--transition-slow);
}

.service-card:hover .service-img img {
  transform: scale(1.05);
}

.service-content {
  padding: 2rem;
  flex-grow: 1;
  display: flex;
  flex-direction: column;
}

.service-card h3 {
  font-size: 1.35rem;
  margin-bottom: 0.75rem;
}

.service-card p {
  font-size: 0.95rem;
  margin-bottom: 1.5rem;
  flex-grow: 1;
}

/* Key specs for fireproofing diagram */
.diagram-wrapper {
  background-color: var(--dark-accent);
  border: 1px solid var(--border-dark);
  border-radius: var(--border-radius-lg);
  padding: 3rem;
  margin-top: 4rem;
}

.diagram-grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 4rem;
  align-items: center;
}

.diagram-image-container {
  display: flex;
  justify-content: center;
  align-items: center;
  background-color: #fff;
  border-radius: var(--border-radius);
  padding: 2rem;
}

.diagram-image-container img {
  max-width: 100%;
  height: auto;
}

.diagram-list {
  list-style: none;
}

.diagram-step {
  display: flex;
  align-items: flex-start;
  gap: 1.5rem;
  margin-bottom: 2rem;
}

.diagram-step:last-child {
  margin-bottom: 0;
}

.step-num {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background-color: var(--primary);
  color: #fff;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  font-size: 0.9rem;
}

.step-title {
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 0.25rem;
}

.step-desc {
  font-size: 0.9rem;
  margin-bottom: 0;
  color: var(--text-muted-dark);
}

/* Testing process roadmap */
.testing-timeline {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2.5rem;
  margin-top: 4rem;
}

.timeline-card {
  background-color: var(--dark-card);
  border: 1px solid var(--border-dark);
  border-radius: var(--border-radius);
  padding: 2.5rem;
  position: relative;
  transition: var(--transition);
}

.timeline-card:hover {
  transform: translateY(-5px);
  border-color: var(--primary);
}

.timeline-card::after {
  content: '';
  position: absolute;
  top: 50px;
  right: -2.5rem;
  width: 2.5rem;
  height: 2px;
  background: linear-gradient(to right, var(--primary), transparent);
  z-index: 1;
}

.timeline-card:last-child::after {
  display: none;
}

.timeline-card img {
  width: 100%;
  height: 180px;
  object-fit: cover;
  border-radius: 8px;
  margin-bottom: 1.5rem;
}

/* --- PROJECTS PAGE (FILTERGRID) --- */
.portfolio-filters {
  display: flex;
  justify-content: center;
  gap: 1rem;
  margin-bottom: 3.5rem;
  flex-wrap: wrap;
}

.filter-btn {
  background-color: var(--dark-card);
  border: 1px solid var(--border-dark);
  color: var(--text-muted-dark);
  padding: 0.75rem 1.75rem;
  border-radius: 50px;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
}

.filter-btn:hover, .filter-btn.active {
  background-color: var(--primary);
  color: #fff;
  border-color: var(--primary);
  box-shadow: var(--shadow-glow);
}

.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 2rem;
}

.project-card {
  background-color: var(--dark-card);
  border: 1px solid var(--border-dark);
  border-radius: var(--border-radius);
  overflow: hidden;
  transition: var(--transition-slow);
  display: flex;
  flex-direction: column;
}

.project-card.hidden {
  display: none;
}

.project-card:hover {
  transform: translateY(-8px);
  border-color: rgba(227, 27, 35, 0.35);
  box-shadow: var(--shadow-lg);
}

.project-img-container {
  height: 200px;
  overflow: hidden;
  background-color: #20202a;
  position: relative;
}

.project-img-container img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: var(--transition-slow);
}

.project-card:hover .project-img-container img {
  transform: scale(1.05);
}

.project-category-badge {
  position: absolute;
  top: 1rem;
  left: 1rem;
  background-color: rgba(15, 15, 17, 0.85);
  backdrop-filter: blur(5px);
  border: 1px solid rgba(255, 255, 255, 0.1);
  color: var(--primary);
  font-size: 0.75rem;
  font-weight: 700;
  padding: 0.4rem 0.85rem;
  border-radius: 50px;
  z-index: 2;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.project-info {
  padding: 1.75rem;
  flex-grow: 1;
  display: flex;
  flex-direction: column;
}

.project-title {
  font-size: 1.2rem;
  margin-bottom: 1.25rem;
}

.project-meta-list {
  list-style: none;
  font-size: 0.9rem;
  flex-grow: 1;
}

.project-meta-item {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  margin-bottom: 0.75rem;
  color: var(--text-muted-dark);
}

.project-meta-item:last-child {
  margin-bottom: 0;
}

.project-meta-item strong {
  color: var(--text-dark);
  font-weight: 600;
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  display: block;
  margin-bottom: 0.15rem;
}

.project-meta-icon {
  width: 18px;
  height: 18px;
  object-fit: contain;
  margin-top: 3px;
  filter: saturate(1.5);
}

/* --- PARTNER LOGO BANNER --- */
.partners-wrapper {
  margin-top: 4rem;
}

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

.partner-card {
  background-color: var(--dark-card);
  border: 1px solid var(--border-dark);
  padding: 2.5rem;
  border-radius: var(--border-radius);
  display: flex;
  align-items: center;
  justify-content: center;
  height: 120px;
  transition: var(--transition);
}

.partner-card:hover {
  border-color: rgba(255, 255, 255, 0.2);
  background-color: var(--dark-hover);
  transform: translateY(-2px);
}

.partner-card img {
  max-width: 100%;
  max-height: 60px;
  object-fit: contain;
  filter: grayscale(1) brightness(0.9) contrast(1.2);
  opacity: 0.6;
  transition: var(--transition);
}

.partner-card:hover img {
  filter: none;
  opacity: 1;
}

.partner-special-card {
  grid-column: span 4;
  margin-top: 2rem;
  background-color: var(--dark-accent);
  border: 1px solid var(--border-dark);
  border-radius: var(--border-radius-lg);
  padding: 3rem;
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: 4rem;
  align-items: center;
}

.partner-special-logo {
  background-color: var(--dark-card);
  border: 1px solid var(--border-dark);
  border-radius: var(--border-radius);
  height: 160px;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 2rem;
}

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

.partner-special-info h4 {
  font-size: 1.5rem;
  margin-bottom: 0.5rem;
}

.partner-special-tag {
  color: var(--primary);
  font-weight: 700;
  text-transform: uppercase;
  font-size: 0.8rem;
  letter-spacing: 0.1em;
  margin-bottom: 1rem;
  display: block;
}

/* --- CONTACT US & COPY TO CLIPBOARD --- */
.contact-grid {
  display: grid;
  grid-template-columns: 1.2fr 1.8fr;
  gap: 4rem;
  align-items: start;
}

.contact-info-column {
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

.contact-info-card {
  background-color: var(--dark-card);
  border: 1px solid var(--border-dark);
  border-radius: var(--border-radius);
  padding: 2.5rem;
  transition: var(--transition);
}

.contact-info-card:hover {
  border-color: rgba(227, 27, 35, 0.2);
}

.contact-info-item {
  display: flex;
  align-items: flex-start;
  gap: 1.5rem;
  margin-bottom: 2rem;
}

.contact-info-item:last-child {
  margin-bottom: 0;
}

.contact-icon {
  width: 44px;
  height: 44px;
  background-color: var(--primary-light);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary);
  flex-shrink: 0;
  font-size: 1.2rem;
}

.contact-details h4 {
  font-size: 1.05rem;
  margin-bottom: 0.25rem;
}

.contact-details p {
  font-size: 0.95rem;
  margin-bottom: 0;
  color: var(--text-muted-dark);
}

/* Copy-to-Clipboard Interactive Element */
.copyable {
  cursor: pointer;
  position: relative;
  transition: var(--transition);
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.25rem 0.5rem;
  margin-left: -0.5rem;
  border-radius: var(--border-radius-sm);
}

.copyable:hover {
  background-color: rgba(255, 255, 255, 0.05);
  color: var(--primary);
}

.copyable-icon {
  font-size: 0.85rem;
  opacity: 0;
  transition: var(--transition);
}

.copyable:hover .copyable-icon {
  opacity: 0.7;
}

/* Tooltip message */
.copy-tooltip {
  position: absolute;
  bottom: 120%;
  left: 50%;
  transform: translateX(-50%) translateY(5px);
  background-color: var(--primary);
  color: #fff;
  padding: 0.4rem 0.85rem;
  font-size: 0.75rem;
  font-weight: 600;
  border-radius: 4px;
  pointer-events: none;
  opacity: 0;
  transition: var(--transition);
  box-shadow: 0 4px 12px rgba(227, 27, 35, 0.3);
  white-space: nowrap;
  z-index: 10;
}

.copy-tooltip::after {
  content: '';
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%);
  border-width: 5px;
  border-style: solid;
  border-color: var(--primary) transparent transparent transparent;
}

.copyable.copied .copy-tooltip {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

/* Contact Form */
.contact-form-wrapper {
  background-color: var(--dark-card);
  border: 1px solid var(--border-dark);
  border-radius: var(--border-radius-lg);
  padding: 3.5rem;
}

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

.form-row {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
}

.form-label {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 0.5rem;
  color: var(--text-dark);
}

.form-control {
  width: 100%;
  background-color: var(--dark-accent);
  border: 1px solid var(--border-dark);
  border-radius: var(--border-radius);
  padding: 1rem;
  color: var(--text-dark);
  font-family: var(--font-body);
  font-size: 0.95rem;
  transition: var(--transition);
}

.form-control:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(227, 27, 35, 0.15);
}

textarea.form-control {
  resize: vertical;
  min-height: 150px;
}

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

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

.footer-brand p {
  margin-top: 1.5rem;
  max-width: 320px;
  font-size: 0.9rem;
}

.footer-title {
  font-size: 1rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-dark);
  margin-bottom: 1.5rem;
}

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

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

.footer-links a {
  font-size: 0.9rem;
  color: var(--text-muted-dark);
}

.footer-links a:hover {
  color: var(--primary);
  padding-left: 4px;
}

.footer-bottom {
  border-top: 1px solid var(--border-dark);
  padding-top: 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
  font-size: 0.85rem;
}

/* --- ANIMATIONS --- */
@keyframes zoom-out {
  0% { transform: scale(1.08); }
  100% { transform: scale(1); }
}

@keyframes fade-in-up {
  0% {
    opacity: 0;
    transform: translateY(20px);
  }
  100% {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes scroll-line {
  0% {
    transform: scaleY(0);
    transform-origin: top;
  }
  50% {
    transform: scaleY(1);
    transform-origin: top;
  }
  51% {
    transform: scaleY(1);
    transform-origin: bottom;
  }
  100% {
    transform: scaleY(0);
    transform-origin: bottom;
  }
}

/* --- RESPONSIVE MEDIA QUERIES --- */
@media (max-width: 1024px) {
  .grid-3 {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .grid-4 {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .partner-logo-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .partner-special-card {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
  
  .partner-special-logo {
    height: 120px;
  }
  
  .diagram-grid {
    grid-template-columns: 1fr;
    gap: 3rem;
  }
}

@media (max-width: 768px) {
  .section {
    padding: 5rem 0;
  }
  
  .grid-2 {
    grid-template-columns: 1fr;
    gap: 3rem;
  }
  
  .mobile-toggle {
    display: block;
  }
  
  .nav-menu {
    position: fixed;
    top: 80px;
    left: 0;
    width: 100%;
    height: calc(100vh - 80px);
    background-color: var(--dark);
    border-top: 1px solid var(--border-dark);
    padding: 3rem 2rem;
    transform: translateX(-100%);
    transition: var(--transition-slow);
    z-index: 999;
  }
  
  .nav-menu.active {
    transform: translateX(0);
  }
  
  .nav-list {
    flex-direction: column;
    gap: 2rem;
    align-items: center;
  }
  
  .nav-link {
    font-size: 1.25rem;
  }
  
  .hero {
    padding-top: 140px;
  }
  
  .hero-actions {
    flex-direction: column;
  }
  
  .testing-timeline {
    grid-template-columns: 1fr;
    gap: 3rem;
  }
  
  .timeline-card::after {
    display: none;
  }
  
  .contact-grid {
    grid-template-columns: 1fr;
    gap: 3rem;
  }
  
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 3rem;
  }
  
  .form-row {
    grid-template-columns: 1fr;
    gap: 0;
  }
}

@media (max-width: 480px) {
  .grid-3 {
    grid-template-columns: 1fr;
  }
  
  .grid-4 {
    grid-template-columns: 1fr;
  }
  
  .partner-logo-grid {
    grid-template-columns: 1fr;
  }
}