/* ========================================
   RASAYAN - Premium Industrial Theme CSS
   ======================================== */

/* === BASE & RESET === */
:root {
  --primary: #0F172A;
  --accent: #F97316;
  --accent-hover: #EA580C;
  --secondary: #E5E7EB;
  --dark: #020617;
  --light: #F8FAFC;
  --text: #334155;
  --text-light: #64748B;
  --white: #FFFFFF;
  --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
  --shadow: 0 4px 6px -1px rgba(0,0,0,0.1), 0 2px 4px -2px rgba(0,0,0,0.1);
  --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.1), 0 4px 6px -4px rgba(0,0,0,0.1);
  --shadow-xl: 0 20px 25px -5px rgba(0,0,0,0.1), 0 8px 10px -6px rgba(0,0,0,0.1);
  --shadow-2xl: 0 25px 50px -12px rgba(0,0,0,0.25);
  --radius: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --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);
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 80px;
}

body {
  font-family: 'Inter', 'Poppins', -apple-system, BlinkMacSystemFont, sans-serif;
  color: var(--text);
  background: var(--white);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

/* === SCROLLBAR === */
::-webkit-scrollbar { width: 8px; }
::-webkit-scrollbar-track { background: var(--secondary); }
::-webkit-scrollbar-thumb { background: var(--primary); border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: var(--accent); }

/* === SELECTION === */
::selection {
  background: var(--accent);
  color: var(--white);
}

/* === TYPOGRAPHY === */
h1, h2, h3, h4, h5, h6 {
  font-family: 'Poppins', 'Inter', sans-serif;
  font-weight: 700;
  line-height: 1.2;
  color: var(--primary);
}

/* === PREMIUM HEADER === */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  transition: var(--transition);
  padding: 0;
}

.navbar-transparent {
  background: transparent;
}

.navbar-solid {
  background: rgba(15, 23, 42, 0.95);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  box-shadow: 0 4px 30px rgba(0, 0, 0, 0.15);
}

.nav-link {
  position: relative;
  font-weight: 500;
  transition: var(--transition);
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--accent);
  transition: var(--transition);
  border-radius: 1px;
}

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

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

/* Mobile menu */
.mobile-menu {
  transform: translateX(100%);
  transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.mobile-menu.open {
  transform: translateX(0);
}

.mobile-menu-overlay {
  opacity: 0;
  visibility: hidden;
  transition: var(--transition);
}

.mobile-menu-overlay.open {
  opacity: 1;
  visibility: visible;
}

/* === HERO SECTION === */
.hero-section {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  overflow: hidden;
}

.hero-arrow {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  z-index: 20;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: rgba(255,255,255,0.1);
  backdrop-filter: blur(8px);
  border: 1px solid rgba(255,255,255,0.2);
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: var(--transition);
  opacity: 0.7;
}

.hero-arrow:hover {
  background: rgba(249, 115, 22, 0.8);
  border-color: rgba(249, 115, 22, 0.8);
  opacity: 1;
  transform: translateY(-50%) scale(1.1);
}

@media (max-width: 640px) {
  .hero-arrow {
    width: 40px;
    height: 40px;
    opacity: 0.5;
  }
}

.hero-bg-gradient {
  background: linear-gradient(135deg, #0F172A 0%, #1E293B 50%, #0F172A 100%);
}

.hero-pattern {
  background-image: radial-gradient(circle at 25% 25%, rgba(249, 115, 22, 0.08) 0%, transparent 50%),
                    radial-gradient(circle at 75% 75%, rgba(249, 115, 22, 0.05) 0%, transparent 50%);
}

.hero-glow {
  position: absolute;
  width: 600px;
  height: 600px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(249, 115, 22, 0.15) 0%, transparent 70%);
  filter: blur(60px);
  animation: pulseGlow 4s ease-in-out infinite;
}

@keyframes pulseGlow {
  0%, 100% { opacity: 0.5; transform: scale(1); }
  50% { opacity: 0.8; transform: scale(1.1); }
}

/* === BUTTONS === */
.btn-primary {
  background: linear-gradient(135deg, var(--accent), var(--accent-hover));
  color: var(--white);
  padding: 14px 32px;
  border-radius: var(--radius);
  font-weight: 600;
  font-size: 0.95rem;
  letter-spacing: 0.02em;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  border: none;
  cursor: pointer;
  text-decoration: none;
}

.btn-primary::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
  transition: 0.5s;
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(249, 115, 22, 0.4);
}

.btn-primary:hover::before {
  left: 100%;
}

.btn-primary:active {
  transform: translateY(0);
}

.btn-secondary {
  background: transparent;
  color: var(--white);
  padding: 14px 32px;
  border-radius: var(--radius);
  font-weight: 600;
  font-size: 0.95rem;
  letter-spacing: 0.02em;
  transition: var(--transition);
  display: inline-flex;
  align-items: center;
  gap: 8px;
  border: 2px solid rgba(255,255,255,0.3);
  cursor: pointer;
  text-decoration: none;
}

.btn-secondary:hover {
  background: rgba(255,255,255,0.1);
  border-color: var(--accent);
  color: var(--accent);
  transform: translateY(-2px);
}

.btn-outline {
  background: transparent;
  color: var(--primary);
  padding: 12px 28px;
  border-radius: var(--radius);
  font-weight: 600;
  font-size: 0.9rem;
  transition: var(--transition);
  display: inline-flex;
  align-items: center;
  gap: 8px;
  border: 2px solid var(--primary);
  cursor: pointer;
  text-decoration: none;
}

.btn-outline:hover {
  background: var(--primary);
  color: var(--white);
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.btn-ghost {
  background: transparent;
  color: var(--accent);
  padding: 12px 24px;
  border-radius: var(--radius);
  font-weight: 600;
  font-size: 0.9rem;
  transition: var(--transition);
  display: inline-flex;
  align-items: center;
  gap: 8px;
  border: none;
  cursor: pointer;
  text-decoration: none;
}

.btn-ghost:hover {
  background: rgba(249, 115, 22, 0.1);
}

/* === CARDS === */
.card-premium {
  background: var(--white);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: var(--transition);
  border: 1px solid rgba(0,0,0,0.06);
  position: relative;
}

.card-premium:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-2xl);
  border-color: rgba(249, 115, 22, 0.2);
}

.card-premium .card-image {
  overflow: hidden;
  position: relative;
}

.card-premium .card-image img {
  transition: transform 0.6s cubic-bezier(0.4, 0, 0.2, 1);
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.card-premium:hover .card-image img {
  transform: scale(1.08);
}

.card-premium .card-badge {
  position: absolute;
  top: 12px;
  left: 12px;
  background: var(--accent);
  color: var(--white);
  padding: 4px 12px;
  border-radius: 20px;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  z-index: 2;
}

.card-premium .card-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(15,23,42,0.7) 0%, transparent 60%);
  opacity: 0;
  transition: var(--transition);
}

.card-premium:hover .card-overlay {
  opacity: 1;
}

/* === SECTION STYLES === */
.section-padding {
  padding: 100px 0;
}

.section-title {
  position: relative;
  display: inline-block;
}

.section-title::after {
  content: '';
  position: absolute;
  bottom: -8px;
  left: 0;
  width: 60px;
  height: 4px;
  background: var(--accent);
  border-radius: 2px;
}

.section-title.center::after {
  left: 50%;
  transform: translateX(-50%);
}

/* === FEATURE GRID === */
.feature-card {
  position: relative;
  padding: 32px;
  border-radius: var(--radius-lg);
  transition: var(--transition);
  background: var(--white);
  border: 1px solid rgba(0,0,0,0.06);
}

.feature-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-xl);
  border-color: rgba(249, 115, 22, 0.2);
}

.feature-icon {
  width: 64px;
  height: 64px;
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
  transition: var(--transition);
  font-size: 1.5rem;
}

.feature-card:hover .feature-icon {
  transform: scale(1.1) rotate(-5deg);
}

/* === STATS === */
.stat-card {
  text-align: center;
  padding: 40px 20px;
}

.stat-number {
  font-family: 'Poppins', sans-serif;
  font-size: 3rem;
  font-weight: 800;
  color: var(--accent);
  line-height: 1;
  margin-bottom: 8px;
}

/* === TESTIMONIALS === */
.testimonial-card {
  background: var(--white);
  border-radius: var(--radius-lg);
  padding: 32px;
  position: relative;
  border: 1px solid rgba(0,0,0,0.06);
  transition: var(--transition);
}

.testimonial-card:hover {
  box-shadow: var(--shadow-lg);
}

.testimonial-card::before {
  content: '\201C';
  font-size: 5rem;
  color: var(--accent);
  opacity: 0.15;
  position: absolute;
  top: 10px;
  left: 24px;
  font-family: Georgia, serif;
  line-height: 1;
}

.testimonial-avatar {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent), #FB923C);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--white);
  font-weight: 700;
  font-size: 1.1rem;
}

/* === FORM STYLES === */
.form-input {
  width: 100%;
  padding: 14px 18px;
  border: 2px solid var(--secondary);
  border-radius: var(--radius);
  font-size: 0.95rem;
  transition: var(--transition);
  background: var(--white);
  color: var(--primary);
  outline: none;
  font-family: 'Inter', sans-serif;
}

.form-input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 4px rgba(249, 115, 22, 0.1);
}

.form-input::placeholder {
  color: var(--text-light);
}

textarea.form-input {
  resize: vertical;
  min-height: 120px;
}

/* === BLOG CARD === */
.blog-card {
  background: var(--white);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: var(--transition);
  border: 1px solid rgba(0,0,0,0.06);
}

.blog-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-2xl);
}

.blog-card .blog-image {
  overflow: hidden;
  position: relative;
}

.blog-card .blog-image img {
  transition: transform 0.6s cubic-bezier(0.4, 0, 0.2, 1);
  width: 100%;
  height: 220px;
  object-fit: cover;
}

.blog-card:hover .blog-image img {
  transform: scale(1.06);
}

.blog-card .blog-date {
  position: absolute;
  bottom: 12px;
  left: 12px;
  background: var(--accent);
  color: var(--white);
  padding: 6px 14px;
  border-radius: 8px;
  font-size: 0.8rem;
  font-weight: 600;
}

/* === FOOTER === */
.footer-gradient {
  background: linear-gradient(180deg, #0F172A 0%, #020617 100%);
}

.footer-link {
  color: #94A3B8;
  transition: var(--transition);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.footer-link:hover {
  color: var(--accent);
  transform: translateX(4px);
}

.footer-divider {
  border: none;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(148,163,184,0.2), transparent);
}

/* === CTA BANNER === */
.cta-banner {
  background: linear-gradient(135deg, var(--primary) 0%, #1E293B 100%);
  position: relative;
  overflow: hidden;
}

.cta-banner::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -10%;
  width: 500px;
  height: 500px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(249,115,22,0.15) 0%, transparent 70%);
}

.cta-banner::after {
  content: '';
  position: absolute;
  bottom: -30%;
  left: -5%;
  width: 400px;
  height: 400px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(249,115,22,0.08) 0%, transparent 70%);
}

/* === PAGE HEADER (for inner pages) === */
.page-header {
  background: linear-gradient(135deg, var(--primary) 0%, #1E293B 100%);
  padding: 140px 0 80px;
  position: relative;
  overflow: hidden;
}

.page-header::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -10%;
  width: 600px;
  height: 600px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(249,115,22,0.1) 0%, transparent 70%);
}

.page-header .breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  color: #94A3B8;
  font-size: 0.9rem;
}

.page-header .breadcrumb a {
  color: #94A3B8;
  text-decoration: none;
  transition: var(--transition);
}

.page-header .breadcrumb a:hover {
  color: var(--accent);
}

.page-header .breadcrumb .separator {
  color: #475569;
}

/* === FILTER SIDEBAR === */
.filter-group {
  border-bottom: 1px solid var(--secondary);
  padding-bottom: 20px;
  margin-bottom: 20px;
}

.filter-group:last-child {
  border-bottom: none;
  margin-bottom: 0;
}

.filter-checkbox {
  display: flex;
  align-items: center;
  gap: 10px;
  cursor: pointer;
  padding: 6px 0;
  transition: var(--transition);
}

.filter-checkbox:hover {
  color: var(--accent);
}

.filter-checkbox input[type="checkbox"] {
  width: 18px;
  height: 18px;
  accent-color: var(--accent);
  cursor: pointer;
}

/* === PRICE RANGE SLIDER === */
.price-range {
  -webkit-appearance: none;
  width: 100%;
  height: 4px;
  border-radius: 2px;
  background: var(--secondary);
  outline: none;
}

.price-range::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: var(--accent);
  cursor: pointer;
  box-shadow: 0 2px 6px rgba(249,115,22,0.4);
}

/* === GALLERY === */
.gallery-thumb {
  width: 80px;
  height: 80px;
  border-radius: var(--radius);
  overflow: hidden;
  cursor: pointer;
  border: 3px solid transparent;
  transition: var(--transition);
  opacity: 0.6;
}

.gallery-thumb:hover,
.gallery-thumb.active {
  border-color: var(--accent);
  opacity: 1;
}

.gallery-main {
  border-radius: var(--radius-lg);
  overflow: hidden;
  aspect-ratio: 4/3;
}

.gallery-main img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* === SPECIFICATION TABLE === */
.spec-table {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--secondary);
}

.spec-table tr:nth-child(even) {
  background: #F8FAFC;
}

.spec-table td {
  padding: 14px 20px;
  border-bottom: 1px solid var(--secondary);
  font-size: 0.95rem;
}

.spec-table td:first-child {
  font-weight: 600;
  color: var(--primary);
  width: 40%;
  background: rgba(15,23,42,0.03);
}

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

/* === SCROLL ANIMATIONS === */
.fade-up {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.8s cubic-bezier(0.4, 0, 0.2, 1), transform 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

.fade-up.visible {
  opacity: 1;
  transform: translateY(0);
}

.fade-left {
  opacity: 0;
  transform: translateX(-40px);
  transition: opacity 0.8s cubic-bezier(0.4, 0, 0.2, 1), transform 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

.fade-left.visible {
  opacity: 1;
  transform: translateX(0);
}

.fade-right {
  opacity: 0;
  transform: translateX(40px);
  transition: opacity 0.8s cubic-bezier(0.4, 0, 0.2, 1), transform 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

.fade-right.visible {
  opacity: 1;
  transform: translateX(0);
}

.scale-in {
  opacity: 0;
  transform: scale(0.9);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.scale-in.visible {
  opacity: 1;
  transform: scale(1);
}

/* Staggered children animation */
.stagger-children > * {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.5s ease, transform 0.5s ease;
}

.stagger-children.visible > *:nth-child(1) { transition-delay: 0.1s; opacity: 1; transform: translateY(0); }
.stagger-children.visible > *:nth-child(2) { transition-delay: 0.2s; opacity: 1; transform: translateY(0); }
.stagger-children.visible > *:nth-child(3) { transition-delay: 0.3s; opacity: 1; transform: translateY(0); }
.stagger-children.visible > *:nth-child(4) { transition-delay: 0.4s; opacity: 1; transform: translateY(0); }
.stagger-children.visible > *:nth-child(5) { transition-delay: 0.5s; opacity: 1; transform: translateY(0); }
.stagger-children.visible > *:nth-child(6) { transition-delay: 0.6s; opacity: 1; transform: translateY(0); }
.stagger-children.visible > *:nth-child(7) { transition-delay: 0.7s; opacity: 1; transform: translateY(0); }
.stagger-children.visible > *:nth-child(8) { transition-delay: 0.8s; opacity: 1; transform: translateY(0); }

/* === MARQUEE / TRUSTED BY === */
.trusted-marquee {
  display: flex;
  animation: marquee 30s linear infinite;
}

@keyframes marquee {
  0% { transform: translateX(0); }
  100% { transform: translateX(-50%); }
}

/* === LOADING SKELETON === */
.skeleton {
  background: linear-gradient(90deg, #f0f0f0 25%, #e0e0e0 50%, #f0f0f0 75%);
  background-size: 200% 100%;
  animation: shimmer 1.5s infinite;
  border-radius: var(--radius);
}

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

/* === BACK TO TOP === */
.back-to-top {
  position: fixed;
  bottom: 30px;
  right: 30px;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--accent);
  color: var(--white);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transform: translateY(20px);
  transition: var(--transition);
  z-index: 999;
  box-shadow: 0 4px 15px rgba(249, 115, 22, 0.4);
  border: none;
}

.back-to-top.visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.back-to-top:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 25px rgba(249, 115, 22, 0.5);
}

/* === UTILITIES === */
.text-gradient {
  background: linear-gradient(135deg, var(--accent), #FB923C);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.bg-pattern {
  background-image: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23F97316' fill-opacity='0.04'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
}

/* === COUNTER ANIMATION === */
.counter-animate {
  display: inline-block;
  min-width: 2ch;
}

/* === TABS === */
.tab-btn {
  padding: 12px 24px;
  border: none;
  background: transparent;
  font-weight: 600;
  color: var(--text-light);
  cursor: pointer;
  transition: var(--transition);
  border-bottom: 3px solid transparent;
  font-size: 0.95rem;
  font-family: 'Inter', sans-serif;
}

.tab-btn:hover {
  color: var(--primary);
}

.tab-btn.active {
  color: var(--accent);
  border-bottom-color: var(--accent);
}

.tab-content {
  display: none;
}

.tab-content.active {
  display: block;
  animation: fadeIn 0.4s ease;
}

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

/* === PAGINATION === */
.pagination-btn {
  width: 40px;
  height: 40px;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 600;
  transition: var(--transition);
  border: 2px solid var(--secondary);
  background: var(--white);
  color: var(--text);
  cursor: pointer;
  font-size: 0.9rem;
}

.pagination-btn:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.pagination-btn.active {
  background: var(--accent);
  border-color: var(--accent);
  color: var(--white);
}

/* === HORIZONTAL SCROLL === */
.hide-scrollbar {
  -ms-overflow-style: none;
  scrollbar-width: none;
}

.hide-scrollbar::-webkit-scrollbar {
  display: none;
}

/* === RESPONSIVE TWEAKS === */
@media (max-width: 1024px) {
  .section-padding { padding: 80px 0; }
  .stat-number { font-size: 2.5rem; }
}

@media (max-width: 768px) {
  .section-padding { padding: 60px 0; }
  .stat-number { font-size: 2rem; }
  .hero-section { min-height: auto; padding: 120px 0 80px; }
  .page-header { padding: 120px 0 60px; }
}

@media (max-width: 480px) {
  .section-padding { padding: 48px 0; }
  .stat-number { font-size: 1.8rem; }
}