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

:root {
  --bg: #0a0a0f;
  --bg2: #12121a;
  --bg3: #1a1a28;
  --accent: #00f0ff;
  --accent2: #7b2ff7;
  --accent3: #ff6b6b;
  --text: #e0e0f0;
  --text-dim: #8888aa;
  --gradient: linear-gradient(135deg, #00f0ff, #7b2ff7);
  --gradient2: linear-gradient(135deg, #7b2ff7, #ff6b6b);
  --font: 'Segoe UI', 'Arial', sans-serif;
}

html {
  scroll-behavior: smooth;
}

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

/* ===== PARTICLE CANVAS ===== */
#particles {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
  pointer-events: none;
}

/* ===== GRID OVERLAY ===== */
body::before {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-image:
    linear-gradient(rgba(0, 240, 255, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 240, 255, 0.03) 1px, transparent 1px);
  background-size: 40px 40px;
  z-index: 0;
  pointer-events: none;
}

/* ===== CONTENT WRAPPER ===== */
.content {
  position: relative;
  z-index: 1;
}

/* ===== HEADER ===== */
.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  padding: 18px 40px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: rgba(10, 10, 15, 0.85);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(0, 240, 255, 0.1);
  z-index: 100;
  transition: all 0.3s;
}

.header.scrolled {
  background: rgba(10, 10, 15, 0.95);
  box-shadow: 0 4px 30px rgba(0, 0, 0, 0.3);
}

.logo {
  font-size: 22px;
  font-weight: 800;
  background: var(--gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  letter-spacing: 1px;
  text-decoration: none;
}

.logo span {
  font-weight: 300;
  -webkit-text-fill-color: var(--text-dim);
}

.nav {
  display: flex;
  gap: 28px;
  align-items: center;
}

.nav a {
  color: var(--text-dim);
  text-decoration: none;
  font-size: 14px;
  font-weight: 500;
  transition: color 0.3s;
  letter-spacing: 0.5px;
  position: relative;
}

.nav a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--gradient);
  transition: width 0.3s;
}

.nav a:hover {
  color: var(--text);
}

.nav a:hover::after {
  width: 100%;
}

.nav .contact-btn {
  background: var(--gradient);
  color: white;
  padding: 8px 20px;
  border-radius: 6px;
  font-weight: 600;
  transition: transform 0.3s, box-shadow 0.3s;
}

.nav .contact-btn::after {
  display: none;
}

.nav .contact-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(0, 240, 255, 0.3);
  color: white;
}

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

.menu-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text);
  transition: all 0.3s;
  border-radius: 2px;
}

/* ===== HERO ===== */
.hero {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  padding: 120px 20px 60px;
  position: relative;
  overflow: hidden;
}

/* Hero background decorations */
.hero-bg-left {
  position: absolute;
  left: 2%;
  top: 50%;
  transform: translateY(-50%);
  width: 340px;
  opacity: 0.7;
  pointer-events: none;
  animation: floatDoc 6s ease-in-out infinite;
}

.hero-bg-right {
  position: absolute;
  right: 2%;
  top: 50%;
  transform: translateY(-50%);
  width: 300px;
  opacity: 0.7;
  pointer-events: none;
  animation: floatRobot 7s ease-in-out infinite;
}

.hero-svg {
  width: 100%;
  height: auto;
  filter: drop-shadow(0 0 30px rgba(0, 240, 255, 0.08));
}

/* Center content wrapper */
.hero-center {
  position: relative;
  z-index: 2;
  max-width: 800px;
}

@keyframes floatDoc {
  0%, 100% { transform: translateY(-50%) translateX(0); }
  50% { transform: translateY(calc(-50% - 12px)) translateX(4px); }
}

@keyframes floatRobot {
  0%, 100% { transform: translateY(-50%) translateX(0); }
  50% { transform: translateY(calc(-50% - 8px)) translateX(-4px); }
}

.hero-badge {
  display: inline-block;
  padding: 8px 20px;
  background: rgba(0, 240, 255, 0.08);
  border: 1px solid rgba(0, 240, 255, 0.2);
  border-radius: 50px;
  font-size: 12px;
  color: var(--accent);
  letter-spacing: 2px;
  text-transform: uppercase;
  margin-bottom: 30px;
  animation: fadeInUp 0.8s ease;
}

.hero h1 {
  font-size: clamp(32px, 6vw, 64px);
  font-weight: 800;
  line-height: 1.1;
  margin-bottom: 20px;
  animation: fadeInUp 0.8s ease 0.2s both;
}

.hero h1 .highlight {
  background: var(--gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.typewriter {
  font-size: clamp(16px, 2vw, 24px);
  color: var(--text-dim);
  margin-bottom: 36px;
  min-height: 32px;
  animation: fadeInUp 0.8s ease 0.4s both;
}

.typewriter .cursor {
  display: inline-block;
  width: 3px;
  height: 1em;
  background: var(--accent);
  margin-left: 4px;
  animation: blink 0.8s infinite;
  vertical-align: text-bottom;
}

.hero-buttons {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  justify-content: center;
  animation: fadeInUp 0.8s ease 0.6s both;
}

.btn {
  display: inline-block;
  padding: 14px 32px;
  border-radius: 8px;
  font-size: 15px;
  font-weight: 600;
  text-decoration: none;
  transition: all 0.3s;
  cursor: pointer;
  border: none;
  font-family: var(--font);
}

.btn-primary {
  background: var(--gradient);
  color: white;
}

.btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 30px rgba(0, 240, 255, 0.35);
}

.btn-outline {
  background: transparent;
  color: var(--text);
  border: 1px solid rgba(255, 255, 255, 0.2);
}

.btn-outline:hover {
  border-color: var(--accent);
  color: var(--accent);
  transform: translateY(-3px);
}

/* ===== SCROLL INDICATOR ===== */
.scroll-indicator {
  position: absolute;
  bottom: 30px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  color: var(--text-dim);
  font-size: 12px;
  letter-spacing: 2px;
  text-transform: uppercase;
  animation: fadeInUp 0.8s ease 1s both;
}

.scroll-indicator .mouse {
  width: 24px;
  height: 38px;
  border: 2px solid var(--text-dim);
  border-radius: 12px;
  position: relative;
}

.scroll-indicator .mouse::before {
  content: '';
  position: absolute;
  top: 6px;
  left: 50%;
  transform: translateX(-50%);
  width: 3px;
  height: 8px;
  background: var(--accent);
  border-radius: 2px;
  animation: scrollWheel 2s infinite;
}

/* ===== SECTION COMMON ===== */
.section {
  padding: 100px 20px;
  max-width: 1200px;
  margin: 0 auto;
}

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

.section-label {
  display: inline-block;
  padding: 6px 16px;
  background: rgba(0, 240, 255, 0.08);
  border: 1px solid rgba(0, 240, 255, 0.15);
  border-radius: 50px;
  font-size: 11px;
  color: var(--accent);
  letter-spacing: 2px;
  text-transform: uppercase;
  margin-bottom: 16px;
}

.section-title {
  font-size: clamp(28px, 4vw, 44px);
  font-weight: 700;
  margin-bottom: 16px;
}

.section-subtitle {
  color: var(--text-dim);
  font-size: 18px;
  max-width: 600px;
  margin: 0 auto;
}

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

.offer-card {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: 16px;
  padding: 40px 32px;
  transition: all 0.4s;
  position: relative;
  overflow: hidden;
}

.offer-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--gradient);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.4s;
}

.offer-card:hover {
  transform: translateY(-8px);
  border-color: rgba(0, 240, 255, 0.2);
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
}

.offer-card:hover::before {
  transform: scaleX(1);
}

.offer-icon {
  width: 56px;
  height: 56px;
  border-radius: 12px;
  background: rgba(0, 240, 255, 0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
  font-size: 24px;
}

.offer-card h3 {
  font-size: 20px;
  margin-bottom: 12px;
  font-weight: 700;
}

.offer-card p {
  color: var(--text-dim);
  font-size: 15px;
}

/* ===== PORTFOLIO SLIDER ===== */
.portfolio {
  background: var(--bg2);
}

.slider-container {
  position: relative;
  max-width: 900px;
  margin: 0 auto;
  overflow: hidden;
}

.slider-track {
  display: flex;
  transition: transform 0.6s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.slider-slide {
  min-width: 100%;
  padding: 0 10px;
}

.slide-card {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: 20px;
  padding: 48px 40px;
  transition: all 0.4s;
}

.slide-card:hover {
  border-color: rgba(0, 240, 255, 0.15);
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.2);
}

.slide-number {
  font-size: 48px;
  font-weight: 800;
  background: var(--gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  opacity: 0.3;
  margin-bottom: 8px;
}

.slide-card .case-type {
  font-size: 12px;
  color: var(--accent);
  letter-spacing: 2px;
  text-transform: uppercase;
  margin-bottom: 12px;
}

.slide-card h3 {
  font-size: 24px;
  margin-bottom: 16px;
}

.slide-card p {
  color: var(--text-dim);
  margin-bottom: 20px;
  font-size: 15px;
}

.slide-card .btn-sm {
  display: inline-block;
  padding: 10px 24px;
  background: rgba(0, 240, 255, 0.1);
  color: var(--accent);
  border: 1px solid rgba(0, 240, 255, 0.2);
  border-radius: 6px;
  text-decoration: none;
  font-size: 13px;
  font-weight: 600;
  transition: all 0.3s;
}

.slide-card .btn-sm:hover {
  background: rgba(0, 240, 255, 0.2);
  transform: translateX(4px);
}

.slider-controls {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 20px;
  margin-top: 40px;
}

.slider-btn {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  color: var(--text);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  transition: all 0.3s;
}

.slider-btn:hover {
  background: rgba(0, 240, 255, 0.15);
  border-color: var(--accent);
  color: var(--accent);
}

.slider-dots {
  display: flex;
  gap: 8px;
}

.slider-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--text-dim);
  border: none;
  cursor: pointer;
  transition: all 0.3s;
}

.slider-dot.active {
  background: var(--accent);
  width: 24px;
  border-radius: 4px;
}

/* ===== CONTACT ===== */
.contact {
  text-align: center;
}

.contact-info {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 24px;
  max-width: 800px;
  margin: 0 auto 40px;
}

.contact-item {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: 16px;
  padding: 32px 24px;
  transition: all 0.3s;
}

.contact-item:hover {
  border-color: rgba(0, 240, 255, 0.2);
  transform: translateY(-4px);
}

.contact-item .label {
  font-size: 12px;
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 8px;
}

.contact-item .value {
  font-size: 18px;
  font-weight: 600;
}

.contact-item .value a {
  color: var(--accent);
  text-decoration: none;
  transition: color 0.3s;
}

.contact-item .value a:hover {
  color: white;
}

.contact-inn {
  margin-top: 16px;
  padding: 16px 24px;
  background: rgba(0, 240, 255, 0.05);
  border: 1px solid rgba(0, 240, 255, 0.1);
  border-radius: 12px;
  display: inline-block;
  font-size: 14px;
  color: var(--text-dim);
}

/* ===== FOOTER ===== */
.footer {
  text-align: center;
  padding: 40px 20px;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  color: var(--text-dim);
  font-size: 13px;
  max-width: 1200px;
  margin: 0 auto;
}

/* ===== CASE PAGE ===== */
.case-page {
  padding-top: 80px;
}

.case-hero {
  padding: 100px 20px 60px;
  max-width: 900px;
  margin: 0 auto;
}

.case-back {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--text-dim);
  text-decoration: none;
  font-size: 14px;
  margin-bottom: 30px;
  transition: color 0.3s;
}

.case-back:hover {
  color: var(--accent);
}

.case-hero .case-number {
  font-size: 14px;
  color: var(--accent);
  letter-spacing: 2px;
  text-transform: uppercase;
  margin-bottom: 12px;
}

.case-hero h1 {
  font-size: clamp(28px, 4vw, 44px);
  font-weight: 700;
  margin-bottom: 16px;
}

.case-hero .case-context {
  font-size: 18px;
  color: var(--text-dim);
  margin-bottom: 30px;
}

.case-tags {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.case-tag {
  padding: 6px 16px;
  background: rgba(0, 240, 255, 0.08);
  border: 1px solid rgba(0, 240, 255, 0.15);
  border-radius: 50px;
  font-size: 12px;
  color: var(--accent);
}

.case-body {
  max-width: 900px;
  margin: 0 auto;
  padding: 0 20px 80px;
}

.case-section {
  margin-bottom: 40px;
}

.case-section h2 {
  font-size: 22px;
  font-weight: 700;
  margin-bottom: 16px;
  padding-bottom: 8px;
  border-bottom: 2px solid rgba(0, 240, 255, 0.1);
}

.case-section h3 {
  font-size: 17px;
  font-weight: 600;
  margin-bottom: 12px;
  color: var(--accent);
}

.case-section p {
  color: var(--text-dim);
  margin-bottom: 12px;
  font-size: 15px;
}

.case-section ul {
  list-style: none;
  padding: 0;
}

.case-section ul li {
  color: var(--text-dim);
  padding: 8px 0 8px 24px;
  position: relative;
  font-size: 15px;
}

.case-section ul li::before {
  content: '›';
  position: absolute;
  left: 4px;
  color: var(--accent);
  font-weight: 700;
  font-size: 18px;
}

.case-result {
  background: rgba(0, 240, 255, 0.05);
  border: 1px solid rgba(0, 240, 255, 0.1);
  border-radius: 16px;
  padding: 32px;
  margin-top: 30px;
}

.case-result h2 {
  border-bottom-color: rgba(0, 240, 255, 0.2);
}

.case-result ul li {
  color: var(--text);
}

.case-improvements {
  background: rgba(123, 47, 247, 0.05);
  border: 1px solid rgba(123, 47, 247, 0.15);
  border-radius: 16px;
  padding: 32px;
  margin-top: 30px;
}

.case-improvements h2 {
  border-bottom-color: rgba(123, 47, 247, 0.2);
}

.case-tech {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: 12px;
  padding: 20px 24px;
  margin: 16px 0;
  font-size: 14px;
  color: var(--text-dim);
  font-family: 'Consolas', monospace;
}

/* ===== ANIMATIONS ===== */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes blink {
  0%, 100% { opacity: 1; }
  50% { opacity: 0; }
}

@keyframes scrollWheel {
  0% { opacity: 1; transform: translateX(-50%) translateY(0); }
  100% { opacity: 0; transform: translateX(-50%) translateY(12px); }
}

@keyframes pulse {
  0%, 100% { opacity: 0.4; }
  50% { opacity: 1; }
}

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-10px); }
}

.animate-on-scroll {
  opacity: 0;
  transform: translateY(30px);
  transition: all 0.6s ease;
}

.animate-on-scroll.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ===== RESPONSIVE ===== */
@media (max-width: 768px) {
  .header {
    padding: 14px 20px;
  }

  .nav {
    position: fixed;
    top: 0;
    right: -100%;
    width: 280px;
    height: 100vh;
    background: rgba(10, 10, 15, 0.98);
    flex-direction: column;
    padding: 80px 30px 30px;
    transition: right 0.3s;
    gap: 20px;
    align-items: stretch;
  }

  .nav.open {
    right: 0;
  }

  .menu-toggle {
    display: flex;
  }

  .menu-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
  }

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

  .menu-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
  }

  .hero-bg-left,
  .hero-bg-right {
    display: none;
  }

  .hero h1 {
    font-size: 30px;
  }

  .typewriter {
    font-size: 15px;
  }

  .section {
    padding: 60px 16px;
  }

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

  .slide-card {
    padding: 32px 24px;
  }

  .contact-info {
    grid-template-columns: 1fr;
  }

  .case-section {
    margin-bottom: 30px;
  }

  .case-hero {
    padding: 80px 16px 40px;
  }

  .case-body {
    padding: 0 16px 60px;
  }
}