/* ============================================
   AURA ROBOTICS — style.css
   All component & page styles
   ============================================ */

/* --- Shimmering / Iridescent Animations --- */
@keyframes shimmer-heading {
  0% {
    background-position: -200% center;
  }
  100% {
    background-position: 200% center;
  }
}

@keyframes shimmer-btn {
  0% {
    background-position: -200% center;
  }
  100% {
    background-position: 200% center;
  }
}

/* Shimmering section titles (4s cycle) */
.section-title,
.page-hero-title,
.hero-title,
.cta-banner h2 {
  background: linear-gradient(
    90deg,
    var(--text-primary) 0%,
    var(--text-primary) 30%,
    #7EB8FF 42%,
    #A78BFA 50%,
    #00D4AA 58%,
    var(--text-primary) 70%,
    var(--text-primary) 100%
  );
  background-size: 200% 100%;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  animation: shimmer-heading 4s ease-in-out infinite;
}

/* Preserve gradient-text elements inside shimmer headings */
.hero-title .gradient-text {
  background: var(--cta-gradient);
  background-size: 200% 100%;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  animation: shimmer-heading 4s ease-in-out infinite;
}

/* Transparent iridescent form buttons */
.form-card .btn,
.calc-form + .calc-results ~ .btn,
#calc-btn,
.calculator-section .btn,
.contacts-grid .btn,
form .btn {
  background: transparent !important;
  border: 1.5px solid rgba(74,159,255,0.4);
  color: var(--text-primary);
  position: relative;
  overflow: hidden;
  box-shadow: none;
}

.form-card .btn::before,
#calc-btn::before,
form .btn::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(
    90deg,
    transparent 0%,
    rgba(74,159,255,0.12) 25%,
    rgba(167,139,250,0.15) 50%,
    rgba(0,212,170,0.12) 75%,
    transparent 100%
  );
  background-size: 200% 100%;
  animation: shimmer-btn 4s ease-in-out infinite;
  pointer-events: none;
  border-radius: inherit;
}

.form-card .btn:hover,
#calc-btn:hover,
form .btn:hover {
  border-color: rgba(74,159,255,0.7);
  box-shadow: 0 0 20px rgba(74,159,255,0.15), 0 0 40px rgba(167,139,250,0.08);
  transform: translateY(-2px);
}

/* Animated silver shimmer glow for logo */
@keyframes logo-shimmer {
  0%, 100% {
    filter: drop-shadow(0 0 6px rgba(192,210,235,0.4)) drop-shadow(0 0 14px rgba(160,180,220,0.2)) brightness(1);
  }
  25% {
    filter: drop-shadow(0 0 10px rgba(200,220,255,0.7)) drop-shadow(0 0 24px rgba(170,195,240,0.35)) brightness(1.15);
  }
  50% {
    filter: drop-shadow(0 0 14px rgba(220,230,255,0.8)) drop-shadow(0 0 30px rgba(180,200,245,0.4)) drop-shadow(0 0 50px rgba(140,170,230,0.15)) brightness(1.25);
  }
  75% {
    filter: drop-shadow(0 0 10px rgba(200,215,250,0.6)) drop-shadow(0 0 20px rgba(160,185,235,0.3)) brightness(1.1);
  }
}
.header-logo-img {
  animation: logo-shimmer 4s ease-in-out infinite;
  transition: filter var(--duration-normal) ease;
}
.header-logo-img:hover {
  filter: drop-shadow(0 0 16px rgba(220,235,255,0.9)) drop-shadow(0 0 35px rgba(180,200,245,0.5)) drop-shadow(0 0 60px rgba(140,170,230,0.25)) brightness(1.3);
  animation-play-state: paused;
}
.footer-logo-img {
  animation: logo-shimmer 4s ease-in-out infinite;
  animation-delay: -2s;
}

/* --- Language Toggle --- */
.lang-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  border-radius: 50%;
  border: 1.5px solid rgba(74,159,255,0.4);
  background: rgba(74,159,255,0.08);
  color: var(--primary);
  font-family: var(--font-heading);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.5px;
  cursor: pointer;
  transition: all var(--duration-normal) ease;
  margin-right: var(--space-2);
  flex-shrink: 0;
}
.lang-toggle:hover {
  background: rgba(74,159,255,0.18);
  border-color: var(--primary);
  box-shadow: 0 0 14px rgba(74,159,255,0.25);
  transform: scale(1.08);
}
@media (max-width: 768px) {
  .lang-toggle {
    position: absolute;
    right: 56px;
    top: 50%;
    transform: translateY(-50%);
    width: 34px;
    height: 34px;
    font-size: 12px;
  }
  .lang-toggle:hover {
    transform: translateY(-50%) scale(1.08);
  }
}

/* --- Custom Cursor --- */
.cursor-dot,
.cursor-circle {
  position: fixed;
  top: 0; left: 0;
  pointer-events: none;
  z-index: 10000;
  border-radius: 50%;
  will-change: transform;
}
.cursor-dot {
  width: 6px; height: 6px;
  background: var(--primary);
  transform: translate(-50%, -50%);
}
.cursor-circle {
  width: 40px; height: 40px;
  border: 1.5px solid rgba(74,159,255,0.4);
  background: var(--cursor-glow);
  transform: translate(-50%, -50%);
  transition: width 0.3s var(--ease-spring), height 0.3s var(--ease-spring), background 0.3s ease;
}
.cursor-circle.hover {
  width: 56px; height: 56px;
  background: rgba(74,159,255,0.1);
  border-color: rgba(74,159,255,0.6);
}
@media (pointer: coarse) {
  .cursor-dot, .cursor-circle { display: none; }
}

/* --- Star Canvas --- */
#star-canvas {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
}

/* --- Header --- */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  padding: var(--space-4) 0;
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  background: rgba(10,14,26,0.7);
  border-bottom: 1px solid var(--border);
  transition: background var(--duration-normal) ease, padding var(--duration-normal) ease;
}
.site-header.scrolled {
  background: rgba(10,14,26,0.92);
  padding: var(--space-3) 0;
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-6);
}
.header-logo {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  flex-shrink: 0;
}
.header-logo img {
  height: 44px;
  width: auto;
}
.nav-links {
  display: flex;
  align-items: center;
  gap: var(--space-6);
}
.nav-links a {
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--text-secondary);
  transition: color var(--duration-fast) ease;
  position: relative;
  white-space: nowrap;
}
.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0; right: 0;
  height: 2px;
  background: var(--primary);
  transform: scaleX(0);
  transform-origin: center;
  transition: transform var(--duration-normal) var(--ease-out);
}
.nav-links a:hover, .nav-links a.active {
  color: var(--text-primary);
}
.nav-links a:hover::after, .nav-links a.active::after {
  transform: scaleX(1);
}
.header-cta {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-5);
  background: var(--cta-gradient);
  border-radius: var(--radius-full);
  font-size: var(--text-sm);
  font-weight: 700;
  color: white;
  transition: opacity var(--duration-fast) ease, transform var(--duration-fast) ease;
  white-space: nowrap;
}
.header-cta:hover {
  opacity: 0.9;
  transform: translateY(-1px);
}

/* --- Hamburger --- */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  width: 28px;
  padding: 4px 0;
  z-index: 1001;
}
.hamburger span {
  display: block;
  width: 100%;
  height: 2px;
  background: var(--text-primary);
  border-radius: 2px;
  transition: all var(--duration-normal) var(--ease-out);
}
.hamburger.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}
.hamburger.active span:nth-child(2) {
  opacity: 0;
}
.hamburger.active span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* --- Mobile Nav --- */
.mobile-nav {
  position: fixed;
  inset: 0;
  z-index: 999;
  background: rgba(10,14,26,0.97);
  backdrop-filter: blur(30px);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-8);
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--duration-slow) var(--ease-out);
}
.mobile-nav.open {
  opacity: 1;
  pointer-events: all;
}
.mobile-nav a {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  font-weight: 700;
  color: var(--text-primary);
  transition: color var(--duration-fast) ease;
}
.mobile-nav a:hover {
  color: var(--primary);
}

/* --- Pages container --- */
.page {
  display: none;
  position: relative;
  z-index: 1;
}
.page.active {
  display: block;
}

/* --- Hero Carousel --- */
.hero {
  position: relative;
  height: 100vh;
  min-height: 600px;
  max-height: 1000px;
  overflow: hidden;
}
.hero-slide {
  position: absolute;
  inset: 0;
  opacity: 0;
  transition: opacity 1s ease;
}
.hero-slide.active {
  opacity: 1;
}
.hero-slide-bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  will-change: transform;
}
.hero-slide-overlay {
  position: absolute;
  inset: 0;
  background: var(--hero-overlay);
}
.hero-content {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  justify-content: center;
  padding: var(--space-20) 0 var(--space-16);
  z-index: 2;
}
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-4);
  background: rgba(74,159,255,0.1);
  border: 1px solid rgba(74,159,255,0.2);
  border-radius: var(--radius-full);
  font-size: var(--text-sm);
  color: var(--primary);
  font-weight: 500;
  margin-bottom: var(--space-6);
}
.hero-title {
  font-size: var(--text-hero);
  font-weight: 800;
  color: var(--text-primary);
  max-width: 700px;
  margin-bottom: var(--space-4);
  line-height: 1.05;
}
.hero-title .gradient-text {
  background: var(--cta-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero-subtitle {
  font-size: var(--text-lg);
  color: var(--text-secondary);
  max-width: 550px;
  margin-bottom: var(--space-8);
  line-height: 1.6;
}
.hero-dots {
  position: absolute;
  bottom: var(--space-10);
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: var(--space-3);
  z-index: 3;
}
.hero-dot {
  width: 10px; height: 10px;
  border-radius: 50%;
  background: rgba(255,255,255,0.3);
  cursor: pointer;
  transition: all var(--duration-normal) ease;
}
.hero-dot.active {
  background: var(--primary);
  box-shadow: 0 0 12px rgba(74,159,255,0.5);
  width: 30px;
  border-radius: 5px;
}

/* --- Page Hero (inner pages) --- */
.page-hero {
  position: relative;
  height: 50vh;
  min-height: 350px;
  max-height: 550px;
  overflow: hidden;
  display: flex;
  align-items: center;
}
.page-hero-bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  will-change: transform;
}
.page-hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(10,14,26,0.25) 0%, rgba(10,14,26,0.75) 100%);
}
.page-hero-content {
  position: relative;
  z-index: 2;
}
.page-hero-title {
  font-size: var(--text-4xl);
  color: var(--text-primary);
  margin-bottom: var(--space-4);
}
.page-hero-desc {
  font-size: var(--text-lg);
  color: var(--text-secondary);
  max-width: 600px;
}

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-6);
  border-radius: var(--radius-full);
  font-weight: 700;
  font-size: var(--text-base);
  transition: all var(--duration-normal) var(--ease-out);
  white-space: nowrap;
}
.btn-primary {
  background: var(--cta-gradient);
  color: white;
  box-shadow: var(--shadow-glow);
}
.btn-primary:hover {
  background: var(--cta-gradient-hover);
  transform: translateY(-2px);
  box-shadow: var(--shadow-glow-strong);
}
.btn-secondary {
  background: transparent;
  color: var(--text-primary);
  border: 1px solid var(--border-light);
}
.btn-secondary:hover {
  border-color: var(--primary);
  color: var(--primary);
  background: rgba(74,159,255,0.05);
}
.btn-sm {
  padding: var(--space-2) var(--space-4);
  font-size: var(--text-sm);
}

/* --- Section --- */
.section {
  padding: var(--space-24) 0;
  position: relative;
}
.section-sm {
  padding: var(--space-16) 0;
}
.section-label {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--primary);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: var(--space-4);
}
.section-title {
  font-size: var(--text-3xl);
  color: var(--text-primary);
  margin-bottom: var(--space-4);
  max-width: 700px;
}
.section-desc {
  font-size: var(--text-md);
  color: var(--text-secondary);
  max-width: 600px;
  margin-bottom: var(--space-12);
  line-height: 1.7;
}
.section-header {
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  margin-bottom: var(--space-16);
}
.section-header .section-title {
  max-width: 800px;
}
.section-header .section-desc {
  max-width: 700px;
}

/* --- Stats --- */
.stats-section {
  padding: var(--space-16) 0;
  background: var(--surface);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-8);
}
.stat-item {
  text-align: center;
}
.stat-number {
  font-family: var(--font-display);
  font-size: var(--text-4xl);
  font-weight: 800;
  color: var(--primary);
  line-height: 1;
  margin-bottom: var(--space-2);
}
.stat-label {
  font-size: var(--text-sm);
  color: var(--text-secondary);
  font-weight: 500;
}

/* --- Category Cards --- */
.categories-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-6);
}
.category-card {
  position: relative;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--space-8);
  transition: all var(--duration-normal) var(--ease-out);
  overflow: hidden;
}
.category-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: var(--cta-gradient);
  opacity: 0;
  transition: opacity var(--duration-normal) ease;
}
.category-card:hover {
  transform: translateY(-4px);
  border-color: rgba(74,159,255,0.2);
  box-shadow: var(--shadow-glow);
  background: var(--surface-2);
}
.category-card:hover::before {
  opacity: 1;
}
.category-icon {
  width: 52px; height: 52px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(74,159,255,0.08);
  border-radius: var(--radius-md);
  margin-bottom: var(--space-5);
  color: var(--primary);
}
.category-card h3 {
  font-size: var(--text-lg);
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: var(--space-2);
}
.category-card p {
  font-size: var(--text-sm);
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: var(--space-5);
}
.category-link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--primary);
  transition: gap var(--duration-normal) ease;
}
.category-card:hover .category-link {
  gap: var(--space-3);
}

/* --- ROI Calculator --- */
.calculator-section {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  padding: var(--space-12);
}
.calculator-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-12);
}
.calc-form {
  display: flex;
  flex-direction: column;
  gap: var(--space-5);
}
.calc-results {
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
  justify-content: center;
}
.calc-result-card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
}
.calc-result-label {
  font-size: var(--text-sm);
  color: var(--text-secondary);
  margin-bottom: var(--space-2);
}
.calc-result-value {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  font-weight: 800;
  color: var(--secondary);
}
.calc-result-card.highlight {
  border-color: rgba(0,212,170,0.3);
  background: rgba(0,212,170,0.04);
}

/* --- Form --- */
.form-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}
.form-group label {
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--text-secondary);
}
.form-input, .form-select, .form-textarea {
  width: 100%;
  padding: var(--space-3) var(--space-4);
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-size: var(--text-base);
  transition: border-color var(--duration-fast) ease, box-shadow var(--duration-fast) ease;
  outline: none;
}
.form-input:focus, .form-select:focus, .form-textarea:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(74,159,255,0.15);
}
.form-select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%238B95B0' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='m6 9 6 6 6-6'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 12px center;
  padding-right: 36px;
}
.form-textarea {
  resize: vertical;
  min-height: 100px;
}

/* --- Forms Section --- */
.forms-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-8);
}
.form-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  padding: var(--space-8);
}
.form-card h3 {
  font-size: var(--text-xl);
  margin-bottom: var(--space-2);
  color: var(--text-primary);
}
.form-card > p {
  font-size: var(--text-sm);
  color: var(--text-secondary);
  margin-bottom: var(--space-6);
}
.form-card form {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

/* --- Testimonials --- */
.trust-logos {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-12);
  flex-wrap: wrap;
  padding: var(--space-8) 0;
}
.trust-logo {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: var(--text-xl);
  color: var(--text-secondary);
  opacity: 0.5;
  transition: opacity var(--duration-normal) ease;
}
.trust-logo:hover {
  opacity: 1;
  color: var(--primary);
}

/* --- CTA Banner --- */
.cta-banner {
  position: relative;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  padding: var(--space-16) var(--space-12);
  text-align: center;
  overflow: hidden;
}
.cta-banner::before {
  content: '';
  position: absolute;
  inset: -50%;
  background: radial-gradient(circle at center, rgba(74,159,255,0.06), transparent 60%);
  pointer-events: none;
}
.cta-banner h2 {
  font-size: var(--text-3xl);
  color: var(--text-primary);
  margin-bottom: var(--space-4);
  position: relative;
}
.cta-banner p {
  font-size: var(--text-md);
  color: var(--text-secondary);
  margin-bottom: var(--space-8);
  position: relative;
}
.cta-banner .btn {
  position: relative;
}

/* --- Footer --- */
.site-footer {
  position: relative;
  z-index: 1;
  border-top: 1px solid var(--border);
  padding: var(--space-16) 0 var(--space-8);
  background: rgba(10,14,26,0.95);
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: var(--space-12);
  margin-bottom: var(--space-12);
}
.footer-brand p {
  font-size: var(--text-sm);
  color: var(--text-secondary);
  margin-top: var(--space-4);
  max-width: 300px;
  line-height: 1.7;
}
.footer-brand img {
  height: 36px;
  width: auto;
}
.footer-col h4 {
  font-size: var(--text-sm);
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: var(--space-4);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}
.footer-col a {
  display: block;
  font-size: var(--text-sm);
  color: var(--text-secondary);
  padding: var(--space-1) 0;
  transition: color var(--duration-fast) ease;
}
.footer-col a:hover {
  color: var(--primary);
}
.footer-social {
  display: flex;
  gap: var(--space-3);
  margin-top: var(--space-4);
}
.footer-social a {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px; height: 36px;
  border-radius: 50%;
  background: var(--surface);
  border: 1px solid var(--border);
  color: var(--text-secondary);
  transition: all var(--duration-fast) ease;
}
.footer-social a:hover {
  color: var(--primary);
  border-color: var(--primary);
  background: rgba(74,159,255,0.1);
}
.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: var(--space-8);
  border-top: 1px solid var(--border);
  font-size: var(--text-xs);
  color: var(--text-secondary);
  flex-wrap: wrap;
  gap: var(--space-4);
}
.footer-bottom a {
  color: var(--text-secondary);
  transition: color var(--duration-fast) ease;
}
.footer-bottom a:hover {
  color: var(--primary);
}

/* --- About Page --- */
.timeline {
  position: relative;
  padding-left: var(--space-10);
}
.timeline::before {
  content: '';
  position: absolute;
  left: 7px;
  top: 0; bottom: 0;
  width: 2px;
  background: var(--border);
}
.timeline-item {
  position: relative;
  padding-bottom: var(--space-10);
}
.timeline-item:last-child {
  padding-bottom: 0;
}
.timeline-dot {
  position: absolute;
  left: calc(-1 * var(--space-10) + 1px);
  top: 4px;
  width: 14px; height: 14px;
  border-radius: 50%;
  background: var(--primary);
  border: 3px solid var(--bg);
  box-shadow: 0 0 10px rgba(74,159,255,0.4);
}
.timeline-year {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 800;
  color: var(--primary);
  margin-bottom: var(--space-2);
}
.timeline-text {
  font-size: var(--text-base);
  color: var(--text-secondary);
  line-height: 1.7;
}

.expertise-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-6);
}
.expertise-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  transition: all var(--duration-normal) var(--ease-out);
}
.expertise-card:hover {
  transform: translateY(-3px);
  border-color: rgba(74,159,255,0.2);
  box-shadow: var(--shadow-glow);
}
.expertise-card .icon-wrap {
  width: 48px; height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(74,159,255,0.08);
  border-radius: var(--radius-md);
  margin-bottom: var(--space-4);
  color: var(--primary);
}
.expertise-card h4 {
  font-size: var(--text-md);
  color: var(--text-primary);
  margin-bottom: var(--space-2);
}
.expertise-card p {
  font-size: var(--text-sm);
  color: var(--text-secondary);
  line-height: 1.6;
}

.partners-grid {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--space-8);
}
.partner-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--space-6) var(--space-8);
  text-align: center;
  transition: all var(--duration-normal) ease;
  min-width: 160px;
}
.partner-card:hover {
  border-color: rgba(74,159,255,0.3);
  box-shadow: var(--shadow-glow);
}
.partner-card h4 {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 800;
  color: var(--text-primary);
}
.partner-card p {
  font-size: var(--text-xs);
  color: var(--text-secondary);
  margin-top: var(--space-1);
}

/* --- Catalog Page --- */
.filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  margin-bottom: var(--space-10);
  justify-content: center;
}
.filter-btn {
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-full);
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--text-secondary);
  border: 1px solid var(--border);
  background: transparent;
  transition: all var(--duration-fast) ease;
}
.filter-btn:hover, .filter-btn.active {
  color: var(--primary);
  border-color: var(--primary);
  background: rgba(74,159,255,0.08);
}
.catalog-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-6);
}
.catalog-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--space-8);
  transition: all var(--duration-normal) var(--ease-out);
  overflow: hidden;
  position: relative;
}
.catalog-card::after {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: var(--radius-lg);
  background: radial-gradient(circle at top right, rgba(74,159,255,0.04), transparent 70%);
  pointer-events: none;
  opacity: 0;
  transition: opacity var(--duration-normal) ease;
}
.catalog-card:hover {
  transform: translateY(-4px);
  border-color: rgba(74,159,255,0.2);
  box-shadow: var(--shadow-glow);
}
.catalog-card:hover::after {
  opacity: 1;
}
.catalog-card .category-icon {
  width: 56px; height: 56px;
  background: rgba(74,159,255,0.08);
  border-radius: var(--radius-md);
  margin-bottom: var(--space-5);
}
.catalog-card h3 {
  font-size: var(--text-lg);
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: var(--space-3);
}
.catalog-card p {
  font-size: var(--text-sm);
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: var(--space-5);
}
.catalog-card .price-range {
  font-size: var(--text-sm);
  color: var(--secondary);
  font-weight: 600;
  margin-bottom: var(--space-5);
}

/* --- Blog Page --- */
.blog-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-8);
}
.blog-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: all var(--duration-normal) var(--ease-out);
}
.blog-card:hover {
  transform: translateY(-4px);
  border-color: rgba(74,159,255,0.2);
  box-shadow: var(--shadow-glow);
}
.blog-card-image {
  height: 200px;
  background: var(--surface-2);
  overflow: hidden;
  position: relative;
}
.blog-card-image::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(74,159,255,0.15), rgba(99,102,241,0.15));
}
.blog-card-body {
  padding: var(--space-6);
}
.blog-card-date {
  font-size: var(--text-xs);
  color: var(--primary);
  font-weight: 600;
  margin-bottom: var(--space-3);
}
.blog-card h3 {
  font-size: var(--text-md);
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: var(--space-3);
  line-height: 1.3;
}
.blog-card p {
  font-size: var(--text-sm);
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: var(--space-4);
}
.blog-card-link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--primary);
  transition: gap var(--duration-normal) ease;
}
.blog-card:hover .blog-card-link {
  gap: var(--space-3);
}

/* --- Research Page --- */
.research-areas {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-8);
}
.research-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  padding: var(--space-8);
  transition: all var(--duration-normal) var(--ease-out);
  position: relative;
  overflow: hidden;
}
.research-card::before {
  content: '';
  position: absolute;
  top: -50%; right: -50%;
  width: 100%; height: 100%;
  background: radial-gradient(circle, rgba(99,102,241,0.06), transparent 70%);
  pointer-events: none;
}
.research-card:hover {
  transform: translateY(-3px);
  border-color: rgba(99,102,241,0.2);
  box-shadow: 0 0 30px rgba(99,102,241,0.1);
}
.research-card .icon-wrap {
  width: 56px; height: 56px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(99,102,241,0.1);
  border-radius: var(--radius-md);
  margin-bottom: var(--space-5);
  color: var(--indigo);
}
.research-card h3 {
  font-size: var(--text-xl);
  color: var(--text-primary);
  margin-bottom: var(--space-3);
}
.research-card p {
  font-size: var(--text-sm);
  color: var(--text-secondary);
  line-height: 1.7;
  position: relative;
}
.publications-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-5);
}
.publication-item {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  transition: all var(--duration-normal) ease;
}
.publication-item:hover {
  border-color: rgba(74,159,255,0.2);
}
.publication-item h4 {
  font-size: var(--text-md);
  color: var(--text-primary);
  margin-bottom: var(--space-2);
}
.publication-item .pub-meta {
  font-size: var(--text-sm);
  color: var(--text-secondary);
  margin-bottom: var(--space-3);
}
.publication-item p {
  font-size: var(--text-sm);
  color: var(--text-secondary);
  line-height: 1.6;
}
.innovation-timeline {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-6);
}
.innovation-item {
  text-align: center;
  padding: var(--space-6);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  transition: all var(--duration-normal) ease;
}
.innovation-item:hover {
  border-color: rgba(74,159,255,0.2);
  box-shadow: var(--shadow-glow);
}
.innovation-year {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  font-weight: 800;
  color: var(--primary);
  margin-bottom: var(--space-2);
}
.innovation-title {
  font-weight: 700;
  font-size: var(--text-base);
  color: var(--text-primary);
  margin-bottom: var(--space-2);
}
.innovation-desc {
  font-size: var(--text-sm);
  color: var(--text-secondary);
  line-height: 1.5;
}

/* --- Contacts Page --- */
.contacts-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-12);
}
.contact-info-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
}
.contact-info-item {
  display: flex;
  gap: var(--space-4);
  align-items: flex-start;
}
.contact-info-item .icon-wrap {
  width: 48px; height: 48px;
  min-width: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(74,159,255,0.08);
  border-radius: var(--radius-md);
  color: var(--primary);
}
.contact-info-item h4 {
  font-size: var(--text-base);
  color: var(--text-primary);
  margin-bottom: var(--space-1);
}
.contact-info-item p, .contact-info-item a {
  font-size: var(--text-sm);
  color: var(--text-secondary);
  line-height: 1.5;
}
.contact-info-item a:hover {
  color: var(--primary);
}
.map-placeholder {
  width: 100%;
  height: 300px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-secondary);
  font-size: var(--text-sm);
  margin-top: var(--space-8);
  position: relative;
  overflow: hidden;
}
.map-placeholder::before {
  content: '';
  position: absolute;
  inset: 0;
  background: 
    linear-gradient(rgba(74,159,255,0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(74,159,255,0.03) 1px, transparent 1px);
  background-size: 40px 40px;
}
.social-buttons {
  display: flex;
  gap: var(--space-3);
  margin-top: var(--space-6);
}
.social-btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-5);
  border-radius: var(--radius-full);
  font-size: var(--text-sm);
  font-weight: 600;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text-primary);
  transition: all var(--duration-fast) ease;
}
.social-btn:hover {
  border-color: var(--primary);
  background: rgba(74,159,255,0.08);
}
.social-btn.telegram {
  border-color: #229ED9;
  color: #229ED9;
}
.social-btn.telegram:hover {
  background: rgba(34,158,217,0.1);
}
.social-btn.whatsapp {
  border-color: #25D366;
  color: #25D366;
}
.social-btn.whatsapp:hover {
  background: rgba(37,211,102,0.1);
}

/* --- Back to Top --- */
.back-to-top {
  position: fixed;
  bottom: var(--space-8);
  right: var(--space-8);
  width: 44px; height: 44px;
  border-radius: 50%;
  background: var(--surface-2);
  border: 1px solid var(--border);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 100;
  opacity: 0;
  pointer-events: none;
  transform: translateY(10px);
  transition: all var(--duration-normal) var(--ease-out);
}
.back-to-top.visible {
  opacity: 1;
  pointer-events: all;
  transform: translateY(0);
}
.back-to-top:hover {
  background: var(--primary);
  color: white;
  box-shadow: var(--shadow-glow);
}

/* --- Telegram Widget Placeholder --- */
.tg-widget-placeholder {
  position: fixed;
  bottom: var(--space-8);
  left: var(--space-8);
  z-index: 100;
}
@media (max-width: 768px) {
  .tg-widget-placeholder {
    bottom: var(--space-4);
    left: var(--space-4);
  }
  .tg-widget-btn {
    width: 44px; height: 44px;
  }
}
.tg-widget-btn {
  width: 52px; height: 52px;
  border-radius: 50%;
  background: #229ED9;
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 20px rgba(34,158,217,0.4);
  transition: all var(--duration-fast) ease;
}
.tg-widget-btn:hover {
  transform: scale(1.1);
  box-shadow: 0 6px 28px rgba(34,158,217,0.5);
}

/* --- Collapsible Form Cards --- */
.form-card-collapsible {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  overflow: hidden;
  transition: all var(--duration-normal) var(--ease-out);
}
.form-card-collapsible:hover {
  border-color: rgba(74,159,255,0.3);
  box-shadow: var(--shadow-glow);
}
.form-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-6) var(--space-8);
  cursor: pointer;
  user-select: none;
}
.form-card-header h3 {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-size: var(--text-xl);
  color: var(--text-primary);
  margin: 0;
}
.form-card-chevron {
  color: var(--text-secondary);
  transition: transform var(--duration-normal) var(--ease-out);
  flex-shrink: 0;
}
.form-card-collapsible.expanded .form-card-chevron {
  transform: rotate(180deg);
}
.form-card-body {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.5s cubic-bezier(0.4, 0, 0.2, 1), padding 0.5s cubic-bezier(0.4, 0, 0.2, 1);
  padding: 0 var(--space-8);
}
.form-card-collapsible.expanded .form-card-body {
  max-height: 800px;
  padding: 0 var(--space-8) var(--space-8);
}
.form-card-body p {
  font-size: var(--text-sm);
  color: var(--text-secondary);
  margin-bottom: var(--space-6);
}
.form-card-body form {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

/* --- Partners Marquee --- */
@keyframes marquee-scroll {
  0% { transform: translateX(0); }
  100% { transform: translateX(-50%); }
}
.marquee-wrap {
  overflow: hidden;
  width: 100%;
  padding: var(--space-4) 0 var(--space-8);
  mask-image: linear-gradient(90deg, transparent, black 10%, black 90%, transparent);
  -webkit-mask-image: linear-gradient(90deg, transparent, black 10%, black 90%, transparent);
}
.marquee-track {
  display: flex;
  gap: var(--space-16);
  width: max-content;
  animation: marquee-scroll 20s linear infinite;
}
.marquee-track:hover {
  animation-play-state: paused;
}
.marquee-item {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: var(--text-2xl);
  white-space: nowrap;
  background: linear-gradient(
    90deg,
    var(--text-secondary) 0%,
    var(--text-secondary) 30%,
    #7EB8FF 42%,
    #A78BFA 50%,
    #00D4AA 58%,
    var(--text-secondary) 70%,
    var(--text-secondary) 100%
  );
  background-size: 200% 100%;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  animation: shimmer-heading 4s ease-in-out infinite;
  cursor: default;
  transition: opacity var(--duration-normal) ease;
}
.marquee-item:hover {
  opacity: 0.7;
}

/* --- Search Module --- */
.search-module {
  margin-top: var(--space-12);
}
.search-module-inner {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-full);
  padding: var(--space-3) var(--space-3) var(--space-3) var(--space-6);
  transition: all var(--duration-normal) ease;
}
.search-module-inner:focus-within {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(74,159,255,0.15), var(--shadow-glow);
}
.search-module-icon {
  color: var(--text-secondary);
  flex-shrink: 0;
}
.search-module-input {
  flex: 1;
  border: none;
  background: transparent;
  color: var(--text-primary);
  font-size: var(--text-base);
  outline: none;
  font-family: inherit;
}
.search-module-input::placeholder {
  color: var(--text-secondary);
  opacity: 0.6;
}
.search-module-btn {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  background: var(--cta-gradient);
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  border: none;
  cursor: pointer;
  flex-shrink: 0;
  transition: all var(--duration-fast) ease;
}
.search-module-btn:hover {
  transform: scale(1.05);
  box-shadow: var(--shadow-glow);
}
.search-module-results {
  margin-top: var(--space-4);
  display: none;
}
.search-module-results.active {
  display: block;
}
.search-results-list {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-4);
}
.search-result-item {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--space-4) var(--space-5);
  cursor: pointer;
  transition: all var(--duration-fast) ease;
  display: flex;
  align-items: center;
  gap: var(--space-3);
}
.search-result-item:hover {
  border-color: rgba(74,159,255,0.3);
  background: var(--surface-2);
  transform: translateY(-2px);
}
.search-result-item .result-icon {
  color: var(--primary);
  flex-shrink: 0;
}
.search-result-item .result-text {
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--text-primary);
}
.search-result-item .result-sub {
  font-size: var(--text-xs);
  color: var(--text-secondary);
  margin-top: 2px;
}
.search-no-results {
  text-align: center;
  padding: var(--space-6);
  color: var(--text-secondary);
  font-size: var(--text-sm);
}

/* --- Hero humanoid: full robot visible from head to toe --- */
.hero-slide[data-slide="0"] .hero-slide-bg {
  background-size: auto 76%;
  background-position: 62% 50%;
  background-repeat: no-repeat;
}

/* ==========================================
   RESPONSIVE
   ========================================== */

@media (max-width: 1024px) {
  .categories-grid, .catalog-grid, .blog-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: var(--space-8);
  }
  .research-areas {
    grid-template-columns: 1fr;
  }
  .innovation-timeline {
    grid-template-columns: repeat(2, 1fr);
  }
  .expertise-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .hamburger { display: flex; }
  .nav-links, .header-cta { display: none; }
  
  .search-results-list {
    grid-template-columns: 1fr;
  }
  .marquee-item {
    font-size: var(--text-lg);
  }
  
  .hero {
    min-height: 500px;
  }
  .hero-title {
    font-size: var(--text-3xl);
  }
  .hero-subtitle {
    font-size: var(--text-base);
  }
  
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-6);
  }
  
  .categories-grid, .catalog-grid, .blog-grid {
    grid-template-columns: 1fr;
  }
  
  .calculator-grid, .forms-grid, .contacts-grid {
    grid-template-columns: 1fr;
  }
  
  .footer-grid {
    grid-template-columns: 1fr;
    gap: var(--space-6);
  }
  
  .section {
    padding: var(--space-16) 0;
  }
  .section-sm {
    padding: var(--space-12) 0;
  }
  
  .cta-banner {
    padding: var(--space-10) var(--space-6);
  }
  
  .innovation-timeline {
    grid-template-columns: 1fr;
  }
  .expertise-grid {
    grid-template-columns: 1fr;
  }
  
  .page-hero {
    min-height: 280px;
  }
  .page-hero-title {
    font-size: var(--text-2xl);
  }
  
  .trust-logos {
    gap: var(--space-8);
  }
  .trust-logo {
    font-size: var(--text-md);
  }
}

@media (max-width: 480px) {
  .stats-grid {
    grid-template-columns: 1fr 1fr;
    gap: var(--space-4);
  }
  .stat-number {
    font-size: var(--text-2xl);
  }
  .calculator-section {
    padding: var(--space-6);
  }
  .form-card {
    padding: var(--space-6);
  }
}