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

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

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  color: #f8fafc;
  background: #0f0d1a;
  line-height: 1.6;
  overflow-x: hidden;
}

a {
  color: inherit;
  text-decoration: none;
}

ul { list-style: none; }
img { max-width: 100%; display: block; }

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ===== TYPOGRAPHY ===== */
h1 { font-size: clamp(2rem, 5vw, 3.5rem); font-weight: 700; line-height: 1.15; }
h2 { font-size: clamp(1.5rem, 3.5vw, 2.5rem); font-weight: 700; line-height: 1.2; }
h3 { font-size: clamp(1.1rem, 2vw, 1.5rem); font-weight: 600; line-height: 1.3; }
p  { font-size: clamp(0.95rem, 1.2vw, 1.1rem); color: #cbd5e1; }

/* ===== BUTTONS ===== */
.btn {
  display: inline-block;
  padding: 14px 32px;
  border-radius: 8px;
  font-weight: 600;
  font-size: 1rem;
  cursor: pointer;
  transition: all 0.3s ease;
  border: none;
  font-family: inherit;
}

.btn-primary {
  background: linear-gradient(135deg, #3b82f6, #06b6d4);
  color: #fff;
  box-shadow: 0 4px 20px rgba(59, 130, 246, 0.3);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(59, 130, 246, 0.5);
}

.btn-outline {
  background: transparent;
  color: #f8fafc;
  border: 2px solid rgba(59, 130, 246, 0.5);
}

.btn-outline:hover {
  background: rgba(59, 130, 246, 0.1);
  border-color: #3b82f6;
}

/* ===== HEADER ===== */
.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  padding: 16px 0;
  transition: background 0.3s ease, padding 0.3s ease;
}

.header.scrolled {
  background: rgba(15, 13, 26, 0.95);
  backdrop-filter: blur(20px);
  padding: 10px 0;
  box-shadow: 0 2px 20px rgba(0, 0, 0, 0.3);
}

.header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  font-size: 1.5rem;
  font-weight: 700;
  background: linear-gradient(135deg, #3b82f6, #06b6d4);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.logo span {
  -webkit-text-fill-color: #f8fafc;
}

.nav { display: flex; align-items: center; gap: 32px; }

.nav-links { display: flex; gap: 28px; }

.nav-links a {
  font-size: 0.95rem;
  font-weight: 500;
  color: #cbd5e1;
  transition: color 0.3s;
  position: relative;
}

.nav-links a:hover,
.nav-links a.active {
  color: #f8fafc;
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: linear-gradient(90deg, #3b82f6, #06b6d4);
  transition: width 0.3s;
}

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

.lang-switch {
  display: flex;
  gap: 4px;
  padding: 4px;
  background: rgba(255, 255, 255, 0.05);
  border-radius: 6px;
}

.lang-switch a {
  padding: 4px 10px;
  border-radius: 4px;
  font-size: 0.85rem;
  font-weight: 600;
  color: #94a3b8;
  transition: all 0.3s;
}

.lang-switch a.active {
  background: rgba(59, 130, 246, 0.2);
  color: #3b82f6;
}

.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  background: none;
  border: none;
  padding: 4px;
}

.hamburger span {
  width: 24px;
  height: 2px;
  background: #f8fafc;
  transition: all 0.3s;
  display: block;
}

/* ===== HERO ===== */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
  background: linear-gradient(135deg, #1e1b4b 0%, #1e3a5f 50%, #0f0d1a 100%);
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 800px;
  height: 800px;
  background: radial-gradient(circle, rgba(59, 130, 246, 0.15) 0%, transparent 70%);
  border-radius: 50%;
  animation: float 8s ease-in-out infinite;
}

.hero::after {
  content: '';
  position: absolute;
  bottom: -30%;
  left: -10%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(6, 182, 212, 0.1) 0%, transparent 70%);
  border-radius: 50%;
  animation: float 10s ease-in-out infinite reverse;
}

@keyframes float {
  0%, 100% { transform: translate(0, 0); }
  50% { transform: translate(30px, -30px); }
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 700px;
}

.hero-badge {
  display: inline-block;
  padding: 6px 16px;
  background: rgba(59, 130, 246, 0.15);
  border: 1px solid rgba(59, 130, 246, 0.3);
  border-radius: 50px;
  font-size: 0.85rem;
  color: #60a5fa;
  margin-bottom: 24px;
}

.hero h1 {
  margin-bottom: 20px;
}

.hero h1 .gradient-text {
  background: linear-gradient(135deg, #3b82f6, #06b6d4);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero p {
  font-size: clamp(1rem, 1.5vw, 1.2rem);
  margin-bottom: 32px;
  max-width: 560px;
}

.hero-buttons {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

/* ===== SECTIONS ===== */
section {
  padding: 100px 0;
}

.section-header {
  text-align: center;
  margin-bottom: 60px;
}

.section-header p {
  margin-top: 16px;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.section-label {
  display: inline-block;
  font-size: 0.85rem;
  font-weight: 600;
  color: #3b82f6;
  text-transform: uppercase;
  letter-spacing: 2px;
  margin-bottom: 12px;
}

/* ===== SERVICES GRID ===== */
.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 24px;
}

.service-card {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: 16px;
  padding: 36px;
  transition: all 0.4s ease;
  position: relative;
  overflow: hidden;
}

.service-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, #3b82f6, #06b6d4);
  opacity: 0;
  transition: opacity 0.4s;
}

.service-card:hover {
  transform: translateY(-4px);
  background: rgba(255, 255, 255, 0.06);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
}

.service-card:hover::before {
  opacity: 1;
}

.service-icon {
  width: 56px;
  height: 56px;
  border-radius: 12px;
  background: linear-gradient(135deg, rgba(59, 130, 246, 0.15), rgba(6, 182, 212, 0.15));
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
  font-size: 1.5rem;
}

.service-card h3 { margin-bottom: 12px; }
.service-card p { font-size: 0.95rem; }

.service-card .card-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: 20px;
  color: #3b82f6;
  font-weight: 500;
  font-size: 0.9rem;
  transition: gap 0.3s;
}

.service-card .card-link:hover {
  gap: 10px;
}

/* ===== PROCESS / TIMELINE ===== */
.process-steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
  position: relative;
}

.process-steps::before {
  content: '';
  position: absolute;
  top: 40px;
  left: 15%;
  right: 15%;
  height: 2px;
  background: linear-gradient(90deg, #3b82f6, #06b6d4, #3b82f6);
  opacity: 0.3;
}

.step {
  text-align: center;
  position: relative;
}

.step-number {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  background: linear-gradient(135deg, #1e1b4b, #1e3a5f);
  border: 2px solid rgba(59, 130, 246, 0.3);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 20px;
  font-size: 1.5rem;
  font-weight: 700;
  color: #3b82f6;
}

.step h3 { margin-bottom: 10px; }

/* ===== STATS ===== */
.stats-section {
  background: linear-gradient(135deg, #1e1b4b, #0f0d1a);
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
  text-align: center;
}

.stat h2 {
  font-size: clamp(2rem, 4vw, 3rem);
  background: linear-gradient(135deg, #3b82f6, #06b6d4);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.stat p {
  margin-top: 8px;
  font-size: 0.9rem;
}

/* ===== CTA SECTION ===== */
.cta-section {
  background: linear-gradient(135deg, #1e1b4b 0%, #2563eb 100%);
  text-align: center;
  position: relative;
  overflow: hidden;
}

.cta-section::before {
  content: '';
  position: absolute;
  top: -50%;
  left: 50%;
  transform: translateX(-50%);
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(6, 182, 212, 0.2), transparent 70%);
  border-radius: 50%;
}

.cta-section h2 { margin-bottom: 16px; position: relative; }
.cta-section p { margin-bottom: 32px; position: relative; max-width: 500px; margin-left: auto; margin-right: auto; }
.cta-section .btn { position: relative; }

/* ===== USE CASES GRID ===== */
.usecase-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
  gap: 24px;
}

.usecase-card {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: 16px;
  padding: 32px;
  transition: all 0.4s ease;
}

.usecase-card:hover {
  transform: translateY(-4px);
  background: rgba(255, 255, 255, 0.06);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
}

.usecase-tag {
  display: inline-block;
  padding: 4px 12px;
  background: rgba(59, 130, 246, 0.15);
  border-radius: 50px;
  font-size: 0.8rem;
  color: #60a5fa;
  margin-bottom: 16px;
}

.usecase-card h3 { margin-bottom: 12px; }

.usecase-detail {
  margin-top: 16px;
  padding-top: 16px;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
}

.usecase-detail div {
  margin-bottom: 10px;
}

.usecase-detail strong {
  color: #3b82f6;
  font-size: 0.85rem;
  display: block;
  margin-bottom: 2px;
}

.usecase-detail p {
  font-size: 0.9rem;
}

/* ===== DETAILED SERVICE PAGE ===== */
.service-detail-section {
  padding: 80px 0;
}

.service-detail-section:nth-child(even) {
  background: rgba(255, 255, 255, 0.02);
}

.service-detail {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.service-detail.reverse { direction: rtl; }
.service-detail.reverse > * { direction: ltr; }

.service-detail-content h2 { margin-bottom: 16px; }
.service-detail-content p { margin-bottom: 24px; }

.feature-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.feature-list li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  color: #cbd5e1;
  font-size: 0.95rem;
}

.feature-list li::before {
  content: '✓';
  color: #06b6d4;
  font-weight: 700;
  flex-shrink: 0;
}

.service-visual {
  background: linear-gradient(135deg, rgba(59, 130, 246, 0.1), rgba(6, 182, 212, 0.05));
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: 16px;
  padding: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 300px;
  font-size: 4rem;
}

/* ===== PROCESS PAGE TIMELINE ===== */
.timeline {
  position: relative;
  max-width: 800px;
  margin: 0 auto;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  top: 0;
  bottom: 0;
  width: 2px;
  background: linear-gradient(180deg, #3b82f6, #06b6d4);
  opacity: 0.3;
}

.timeline-item {
  display: flex;
  margin-bottom: 60px;
  position: relative;
}

.timeline-item:nth-child(odd) {
  justify-content: flex-start;
  padding-right: calc(50% + 40px);
}

.timeline-item:nth-child(even) {
  justify-content: flex-end;
  padding-left: calc(50% + 40px);
}

.timeline-dot {
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: linear-gradient(135deg, #3b82f6, #06b6d4);
  border: 3px solid #0f0d1a;
  z-index: 1;
}

.timeline-content {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: 12px;
  padding: 24px;
}

.timeline-content .phase-label {
  font-size: 0.8rem;
  color: #3b82f6;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 8px;
}

.timeline-content h3 { margin-bottom: 10px; }

.timeline-content ul {
  margin-top: 12px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.timeline-content ul li {
  color: #94a3b8;
  font-size: 0.9rem;
  padding-left: 16px;
  position: relative;
}

.timeline-content ul li::before {
  content: '→';
  position: absolute;
  left: 0;
  color: #06b6d4;
}

/* ===== FAQ ===== */
.faq-list {
  max-width: 700px;
  margin: 0 auto;
}

.faq-item {
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.faq-question {
  width: 100%;
  background: none;
  border: none;
  color: #f8fafc;
  font-size: 1.05rem;
  font-weight: 600;
  padding: 20px 0;
  text-align: left;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-family: inherit;
}

.faq-question::after {
  content: '+';
  font-size: 1.3rem;
  color: #3b82f6;
  transition: transform 0.3s;
}

.faq-item.open .faq-question::after {
  transform: rotate(45deg);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease, padding 0.4s ease;
}

.faq-item.open .faq-answer {
  max-height: 200px;
  padding-bottom: 20px;
}

.faq-answer p {
  font-size: 0.95rem;
}

/* ===== CONTACT ===== */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
}

.contact-form {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.form-group label {
  display: block;
  font-size: 0.9rem;
  font-weight: 500;
  margin-bottom: 6px;
  color: #cbd5e1;
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 14px 16px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 8px;
  color: #f8fafc;
  font-size: 1rem;
  font-family: inherit;
  transition: border-color 0.3s;
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: #3b82f6;
}

.form-group textarea {
  min-height: 140px;
  resize: vertical;
}

.form-group .error-msg {
  color: #f87171;
  font-size: 0.8rem;
  margin-top: 4px;
  display: none;
}

.form-group.error input,
.form-group.error textarea {
  border-color: #f87171;
}

.form-group.error .error-msg {
  display: block;
}

.contact-info {
  display: flex;
  flex-direction: column;
  gap: 32px;
}

.contact-info-item {
  display: flex;
  gap: 16px;
  align-items: flex-start;
}

.contact-info-icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  background: rgba(59, 130, 246, 0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  font-size: 1.2rem;
}

.contact-info-item h3 {
  font-size: 1rem;
  margin-bottom: 4px;
}

.contact-info-item p {
  font-size: 0.95rem;
}

/* ===== FOOTER ===== */
.footer {
  background: #080713;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  padding: 60px 0 30px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 40px;
}

.footer-brand .logo {
  margin-bottom: 12px;
  display: inline-block;
}

.footer-brand p {
  font-size: 0.9rem;
  max-width: 300px;
}

.footer h4 {
  font-size: 0.9rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 16px;
  color: #f8fafc;
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-links a {
  color: #94a3b8;
  font-size: 0.9rem;
  transition: color 0.3s;
}

.footer-links a:hover {
  color: #3b82f6;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  padding-top: 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.footer-bottom p {
  font-size: 0.85rem;
  color: #64748b;
}

/* ===== PAGE HERO (subpages) ===== */
.page-hero {
  padding: 160px 0 80px;
  background: linear-gradient(135deg, #1e1b4b 0%, #1e3a5f 50%, #0f0d1a 100%);
  text-align: center;
}

.page-hero h1 { margin-bottom: 16px; }

/* ===== ANIMATIONS ===== */
.fade-in {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

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

/* ===== BREADCRUMBS ===== */
.breadcrumbs {
  padding: 12px 0;
  position: relative;
  z-index: 1;
}

.breadcrumbs ol {
  display: flex;
  align-items: center;
  gap: 8px;
  list-style: none;
  font-size: 0.85rem;
}

.breadcrumbs li {
  display: flex;
  align-items: center;
  gap: 8px;
  color: #94a3b8;
}

.breadcrumbs li a {
  color: #94a3b8;
  transition: color 0.3s;
}

.breadcrumbs li a:hover {
  color: #3b82f6;
}

.breadcrumbs li:last-child {
  color: #cbd5e1;
}

.breadcrumbs .separator {
  color: #475569;
  font-size: 0.75rem;
}

/* ===== MOBILE NAV OVERLAY ===== */
.mobile-nav {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(15, 13, 26, 0.98);
  z-index: 999;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 32px;
}

.mobile-nav.active { display: flex; }

.mobile-nav a {
  font-size: 1.5rem;
  font-weight: 600;
  color: #cbd5e1;
  transition: color 0.3s;
}

.mobile-nav a:hover { color: #3b82f6; }

.mobile-nav .close-btn {
  position: absolute;
  top: 20px;
  right: 24px;
  background: none;
  border: none;
  color: #f8fafc;
  font-size: 2rem;
  cursor: pointer;
}