@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=Outfit:wght@400;500;600;700;800;900&display=swap');

/* ==========================================================================
   CSS VARIABLES & DESIGN TOKENS
   ========================================================================== */
:root {
  --font-heading: 'Outfit', sans-serif;
  --font-body: 'Inter', sans-serif;

  /* Colors */
  --bg-primary: #0C0F14;
  --bg-secondary: #131720;
  --bg-card: rgba(23, 28, 38, 0.75);
  --bg-card-hover: rgba(30, 37, 50, 0.9);
  --bg-glass: rgba(14, 18, 25, 0.85);

  --text-primary: #F8FAFC;
  --text-secondary: #94A3B8;
  --text-muted: #64748B;
  
  --accent-primary: #FF5E1E;
  --accent-primary-hover: #FF773D;
  --accent-glow: rgba(255, 94, 30, 0.35);
  
  --accent-secondary: #00D2FF;
  --accent-secondary-glow: rgba(0, 210, 255, 0.25);
  
  --border-subtle: rgba(255, 255, 255, 0.08);
  --border-highlight: rgba(255, 255, 255, 0.18);
  
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 22px;
  --radius-full: 9999px;

  --shadow-sm: 0 4px 12px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 10px 30px rgba(0, 0, 0, 0.45);
  --shadow-glow: 0 0 40px rgba(255, 94, 30, 0.15);

  --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-normal: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
  background-color: var(--bg-primary);
  color: var(--text-primary);
  font-family: var(--font-body);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

body {
  overflow-x: hidden;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

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

img {
  max-width: 100%;
  height: auto;
  display: block;
}

ul, ol {
  list-style: none;
}

button, input, select, textarea {
  font-family: inherit;
}

/* ==========================================================================
   TYPOGRAPHY
   ========================================================================== */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1.15;
  color: #FFFFFF;
}

.gradient-text {
  background: linear-gradient(135deg, #FFFFFF 30%, #94A3B8 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

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

.section-label {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-heading);
  font-size: 0.85rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 2px;
  color: var(--accent-primary);
  background: rgba(255, 94, 30, 0.1);
  border: 1px solid rgba(255, 94, 30, 0.25);
  padding: 6px 14px;
  border-radius: var(--radius-full);
  margin-bottom: 16px;
}

.section-title {
  font-size: clamp(2rem, 3.5vw, 3.2rem);
  letter-spacing: -0.02em;
  margin-bottom: 20px;
}

.section-desc {
  font-size: 1.125rem;
  color: var(--text-secondary);
  max-width: 720px;
  margin: 0 auto;
}

/* ==========================================================================
   LAYOUT CONTAINERS
   ========================================================================== */
.container {
  width: 100%;
  max-width: 1240px;
  margin-left: auto;
  margin-right: auto;
  padding-left: 24px;
  padding-right: 24px;
}

.section-padding {
  padding-top: 100px;
  padding-bottom: 100px;
}

/* ==========================================================================
   HEADER & NAVBAR
   ========================================================================== */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background: var(--bg-glass);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-subtle);
  transition: all var(--transition-normal);
}

.navbar.scrolled {
  background: rgba(10, 13, 18, 0.95);
  box-shadow: var(--shadow-md);
  padding: 4px 0;
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 80px;
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: 12px;
}

.brand-logo img {
  height: 42px;
  width: auto;
  border-radius: 6px;
}

.brand-name {
  font-family: var(--font-heading);
  font-size: 1.6rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  color: #FFFFFF;
}

.brand-name span {
  color: var(--accent-primary);
}

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

.nav-link {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text-secondary);
  position: relative;
  padding: 8px 0;
}

.nav-link:hover,
.nav-link.active {
  color: #FFFFFF;
}

.nav-link.active::after,
.nav-link:hover::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background: var(--accent-primary);
  border-radius: 2px;
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 16px;
}

.lang-badge {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.8rem;
  font-weight: 600;
  padding: 5px 10px;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
}

.mobile-toggle {
  display: none;
  background: none;
  border: none;
  color: #FFFFFF;
  font-size: 1.6rem;
  cursor: pointer;
  padding: 6px;
}

/* ==========================================================================
   BUTTONS & CTAS
   ========================================================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  font-family: var(--font-heading);
  font-size: 0.95rem;
  font-weight: 600;
  padding: 13px 26px;
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: all var(--transition-normal);
  border: 1px solid transparent;
  white-space: nowrap;
}

.btn-primary {
  background: var(--accent-primary);
  color: #FFFFFF;
  box-shadow: 0 4px 20px var(--accent-glow);
}

.btn-primary:hover {
  background: var(--accent-primary-hover);
  transform: translateY(-2px);
  box-shadow: 0 8px 28px rgba(255, 94, 30, 0.45);
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.05);
  color: #FFFFFF;
  border-color: var(--border-highlight);
  backdrop-filter: blur(10px);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.12);
  border-color: rgba(255, 255, 255, 0.3);
  transform: translateY(-2px);
}

.btn-sm {
  padding: 8px 18px;
  font-size: 0.875rem;
}

/* ==========================================================================
   HERO SECTION
   ========================================================================== */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding-top: 130px;
  padding-bottom: 80px;
  overflow: hidden;
  background: radial-gradient(circle at 80% 20%, rgba(255, 94, 30, 0.12) 0%, transparent 50%),
              radial-gradient(circle at 10% 80%, rgba(0, 210, 255, 0.06) 0%, transparent 40%),
              var(--bg-primary);
}

.hero-bg-img {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.22;
  mix-blend-mode: luminosity;
  z-index: 1;
}

.hero-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(180deg, rgba(12, 15, 20, 0.75) 0%, rgba(12, 15, 20, 0.95) 85%, var(--bg-primary) 100%);
  z-index: 2;
}

.hero-content {
  position: relative;
  z-index: 3;
  max-width: 860px;
}

.hero-title {
  font-size: clamp(2.5rem, 5vw, 4.4rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  margin-bottom: 24px;
}

.hero-subtitle {
  font-size: clamp(1.1rem, 2vw, 1.35rem);
  color: var(--text-secondary);
  line-height: 1.65;
  margin-bottom: 38px;
  max-width: 760px;
}

.hero-cta-group {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
  align-items: center;
}

/* ==========================================================================
   METRICS & STATS BAR
   ========================================================================== */
.stats-bar {
  position: relative;
  z-index: 5;
  margin-top: -50px;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 20px;
}

.stat-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 28px 22px;
  backdrop-filter: blur(16px);
  text-align: center;
  transition: all var(--transition-normal);
}

.stat-card:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-highlight);
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.stat-number {
  font-family: var(--font-heading);
  font-size: 2.8rem;
  font-weight: 800;
  color: var(--accent-primary);
  line-height: 1;
  margin-bottom: 8px;
}

.stat-title {
  font-size: 0.95rem;
  font-weight: 600;
  color: #FFFFFF;
  margin-bottom: 4px;
}

.stat-desc {
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* ==========================================================================
   CARDS & GRID SYSTEMS
   ========================================================================== */
.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 36px;
  align-items: center;
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 36px 30px;
  transition: all var(--transition-normal);
  display: flex;
  flex-direction: column;
  height: 100%;
  position: relative;
  overflow: hidden;
}

.feature-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: linear-gradient(90deg, transparent, var(--accent-primary), transparent);
  opacity: 0;
  transition: opacity var(--transition-normal);
}

.feature-card:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-highlight);
  transform: translateY(-6px);
  box-shadow: var(--shadow-md);
}

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

.feature-icon {
  width: 54px;
  height: 54px;
  border-radius: var(--radius-md);
  background: rgba(255, 94, 30, 0.12);
  border: 1px solid rgba(255, 94, 30, 0.25);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  color: var(--accent-primary);
  margin-bottom: 22px;
}

.feature-title {
  font-size: 1.35rem;
  margin-bottom: 12px;
  color: #FFFFFF;
}

.feature-text {
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* ==========================================================================
   IMAGE SHOWCASE & MEDIA
   ========================================================================== */
.media-card {
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--border-subtle);
  position: relative;
  background: var(--bg-secondary);
  transition: all var(--transition-normal);
}

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

.media-card:hover img {
  transform: scale(1.04);
}

.media-badge {
  position: absolute;
  top: 18px;
  left: 18px;
  background: rgba(12, 15, 20, 0.85);
  backdrop-filter: blur(12px);
  border: 1px solid var(--border-subtle);
  padding: 6px 14px;
  border-radius: var(--radius-full);
  font-size: 0.8rem;
  font-weight: 600;
  color: #FFFFFF;
  z-index: 2;
}

/* ==========================================================================
   PROJECTS & CASES
   ========================================================================== */
.project-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: all var(--transition-normal);
}

.project-card:hover {
  border-color: var(--border-highlight);
  transform: translateY(-5px);
  box-shadow: var(--shadow-md);
}

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

.project-img-wrapper img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s ease;
}

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

.project-body {
  padding: 26px;
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.project-tag {
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--accent-primary);
  margin-bottom: 10px;
}

.project-title {
  font-size: 1.25rem;
  margin-bottom: 12px;
  color: #FFFFFF;
  line-height: 1.35;
}

.project-desc {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 18px;
  flex-grow: 1;
}

/* ==========================================================================
   TECHNICAL COMPARISON TABLE
   ========================================================================== */
.table-wrapper {
  overflow-x: auto;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  backdrop-filter: blur(16px);
  margin-top: 36px;
}

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

.tech-table th, 
.tech-table td {
  padding: 18px 24px;
  border-bottom: 1px solid var(--border-subtle);
  font-size: 0.95rem;
}

.tech-table th {
  background: rgba(255, 255, 255, 0.03);
  font-family: var(--font-heading);
  font-weight: 700;
  color: #FFFFFF;
}

.tech-table th.highlight-col,
.tech-table td.highlight-col {
  background: rgba(255, 94, 30, 0.06);
  border-left: 1px solid rgba(255, 94, 30, 0.2);
  border-right: 1px solid rgba(255, 94, 30, 0.2);
  font-weight: 600;
  color: #FFFFFF;
}

.tech-table tr:hover td {
  background: rgba(255, 255, 255, 0.02);
}

.tech-table tr:hover td.highlight-col {
  background: rgba(255, 94, 30, 0.1);
}

/* ==========================================================================
   TIMELINE / MILESTONES
   ========================================================================== */
.timeline {
  position: relative;
  max-width: 860px;
  margin: 40px auto 0;
  padding-left: 40px;
}

.timeline::before {
  content: '';
  position: absolute;
  top: 0;
  left: 15px;
  width: 2px;
  height: 100%;
  background: linear-gradient(180deg, var(--accent-primary) 0%, var(--border-subtle) 100%);
}

.timeline-item {
  position: relative;
  margin-bottom: 48px;
}

.timeline-dot {
  position: absolute;
  top: 4px;
  left: -33px;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--bg-primary);
  border: 3px solid var(--accent-primary);
  box-shadow: 0 0 10px var(--accent-glow);
}

.timeline-year {
  font-family: var(--font-heading);
  font-size: 1.1rem;
  font-weight: 800;
  color: var(--accent-primary);
  margin-bottom: 6px;
}

.timeline-title {
  font-size: 1.3rem;
  color: #FFFFFF;
  margin-bottom: 8px;
}

.timeline-desc {
  font-size: 0.95rem;
  color: var(--text-secondary);
}

/* ==========================================================================
   PARTNERS & LOGOS
   ========================================================================== */
.partners-section {
  padding: 60px 0;
  border-top: 1px solid var(--border-subtle);
  border-bottom: 1px solid var(--border-subtle);
  background: rgba(255, 255, 255, 0.015);
}

.partners-flex {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 40px 60px;
}

.partner-logo {
  height: 48px;
  width: auto;
  max-width: 180px;
  object-fit: contain;
  opacity: 0.55;
  filter: grayscale(100%) brightness(150%);
  transition: all var(--transition-normal);
}

.partner-logo:hover {
  opacity: 1;
  filter: grayscale(0%) brightness(100%);
}

/* ==========================================================================
   FORMS & INPUTS
   ========================================================================== */
.contact-form-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 40px;
  backdrop-filter: blur(20px);
}

.form-group {
  margin-bottom: 22px;
}

.form-label {
  display: block;
  font-size: 0.875rem;
  font-weight: 600;
  color: #FFFFFF;
  margin-bottom: 8px;
}

.form-control {
  width: 100%;
  padding: 13px 18px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  color: #FFFFFF;
  font-size: 0.95rem;
  transition: all var(--transition-fast);
}

.form-control:focus {
  outline: none;
  border-color: var(--accent-primary);
  background: rgba(255, 255, 255, 0.07);
  box-shadow: 0 0 15px rgba(255, 94, 30, 0.2);
}

select.form-control {
  cursor: pointer;
}

select.form-control option {
  background: #131720;
  color: #FFFFFF;
}

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

/* ==========================================================================
   FOOTER
   ========================================================================== */
.footer {
  background: #080A0D;
  border-top: 1px solid var(--border-subtle);
  padding-top: 80px;
  padding-bottom: 40px;
  margin-top: auto;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: 48px;
  margin-bottom: 60px;
}

.footer-brand p {
  color: var(--text-secondary);
  font-size: 0.95rem;
  margin-top: 16px;
  max-width: 320px;
}

.footer-heading {
  font-family: var(--font-heading);
  font-size: 1.05rem;
  font-weight: 700;
  color: #FFFFFF;
  margin-bottom: 20px;
}

.footer-links li {
  margin-bottom: 12px;
}

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

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

.footer-bottom {
  border-top: 1px solid var(--border-subtle);
  padding-top: 30px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  font-size: 0.85rem;
  color: var(--text-muted);
}

/* ==========================================================================
   RESPONSIVE DESIGN
   ========================================================================== */
@media (max-width: 1024px) {
  .grid-3 {
    grid-template-columns: repeat(2, 1fr);
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 768px) {
  .section-padding {
    padding-top: 70px;
    padding-bottom: 70px;
  }

  .nav-links {
    position: fixed;
    top: 80px;
    left: 0;
    width: 100%;
    height: calc(100vh - 80px);
    background: var(--bg-primary);
    flex-direction: column;
    align-items: flex-start;
    padding: 30px 24px;
    gap: 20px;
    transform: translateX(-100%);
    transition: transform var(--transition-normal);
    overflow-y: auto;
  }

  .nav-links.active {
    transform: translateX(0);
  }

  .mobile-toggle {
    display: block;
  }

  .grid-2, 
  .grid-3 {
    grid-template-columns: 1fr;
  }

  .footer-grid {
    grid-template-columns: 1fr;
  }

  .stats-bar {
    margin-top: 20px;
  }

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

  .hero {
    padding-top: 110px;
    min-height: auto;
  }
}

@media (max-width: 480px) {
  .stats-grid {
    grid-template-columns: 1fr;
  }
}