/* ========================================
   Optimized Working - Core Styles
   ======================================== */

/* --- Reset & Base --- */
*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  --bg-primary: #0a0a0f;
  --bg-secondary: #12121a;
  --bg-card: #16161f;
  --bg-card-hover: #1a1a25;
  --accent: #00A8FF;
  --accent-dark: #0080cc;
  --accent-glow: rgba(0, 168, 255, 0.15);
  --accent-glow-strong: rgba(0, 168, 255, 0.3);
  --text-primary: #f0f0f5;
  --text-secondary: #a0a0b0;
  --text-muted: #606070;
  --border: rgba(255, 255, 255, 0.06);
  --border-accent: rgba(0, 168, 255, 0.2);
  --radius: 12px;
  --radius-sm: 8px;
  --radius-lg: 20px;
  --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --nav-height: 72px;
  --container-width: 1200px;
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font);
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

img, svg {
  display: block;
  max-width: 100%;
}

ul {
  list-style: none;
}

.container {
  width: 100%;
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 24px;
}

.section {
  padding: 120px 0;
  position: relative;
}

.text-gradient {
  background: linear-gradient(135deg, var(--accent) 0%, #60d0ff 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 14px 32px;
  border-radius: var(--radius-sm);
  font-family: var(--font);
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  border: none;
  white-space: nowrap;
}

.btn--primary {
  background: var(--accent);
  color: #000;
  box-shadow: 0 0 20px var(--accent-glow);
}

.btn--primary:hover {
  background: #33baff;
  box-shadow: 0 0 30px var(--accent-glow-strong);
  transform: translateY(-2px);
}

.btn--ghost {
  background: transparent;
  color: var(--text-primary);
  border: 1px solid var(--border);
}

.btn--ghost:hover {
  border-color: var(--accent);
  color: var(--accent);
  transform: translateY(-2px);
}

.btn--full {
  width: 100%;
}

/* --- Navigation --- */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: 0 24px;
  transition: background 0.3s, box-shadow 0.3s, backdrop-filter 0.3s;
}

.nav--scrolled {
  background: rgba(10, 10, 15, 0.92);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  box-shadow: 0 1px 0 var(--border);
}

.nav__container {
  max-width: var(--container-width);
  margin: 0 auto;
  height: var(--nav-height);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav__logo img {
  height: 36px;
  width: auto;
}

.nav__menu {
  display: flex;
  align-items: center;
  gap: 8px;
}

.nav__link {
  padding: 8px 16px;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-secondary);
  transition: color var(--transition);
  border-radius: var(--radius-sm);
}

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

.nav__link--cta {
  background: var(--accent);
  color: #000;
  font-weight: 600;
  margin-left: 8px;
}

.nav__link--cta:hover {
  background: #33baff;
  color: #000;
}

.nav__hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
}

.nav__hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text-primary);
  transition: var(--transition);
  border-radius: 2px;
}

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

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

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

/* --- Hero --- */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.hero__bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.hero__video {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  z-index: 1;
}

.hero__gradient-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
  background:
    radial-gradient(ellipse 80% 60% at 50% 40%, rgba(0, 168, 255, 0.08) 0%, transparent 70%),
    radial-gradient(ellipse 60% 80% at 20% 80%, rgba(0, 60, 200, 0.06) 0%, transparent 60%),
    radial-gradient(ellipse 50% 50% at 80% 20%, rgba(0, 168, 255, 0.04) 0%, transparent 50%),
    var(--bg-primary);
  animation: gradientShift 12s ease-in-out infinite alternate;
}

@keyframes gradientShift {
  0% {
    background-position: 0% 50%;
    filter: hue-rotate(0deg);
  }
  100% {
    background-position: 100% 50%;
    filter: hue-rotate(15deg);
  }
}

.hero__overlay {
  position: absolute;
  inset: 0;
  z-index: 2;
  background: linear-gradient(180deg,
    rgba(10, 10, 15, 0.3) 0%,
    rgba(10, 10, 15, 0.1) 40%,
    rgba(10, 10, 15, 0.5) 80%,
    var(--bg-primary) 100%
  );
}

.hero__content {
  position: relative;
  z-index: 1;
  text-align: center;
  max-width: 800px;
  padding: 0 24px;
}

.hero__title {
  font-size: clamp(2.5rem, 6vw, 4.5rem);
  font-weight: 700;
  line-height: 1.1;
  margin-bottom: 24px;
}

.hero__title-line {
  display: block;
}

.hero__title-line--accent {
  background: linear-gradient(135deg, var(--accent) 0%, #60d0ff 50%, var(--accent) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero__subtitle {
  font-size: clamp(1rem, 2vw, 1.2rem);
  color: #ffffff;
  max-width: 600px;
  margin: 0 auto 40px;
  line-height: 1.7;
}

.hero__actions {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}

/* Unmute button */
.hero__unmute {
  position: absolute;
  bottom: 32px;
  right: 32px;
  z-index: 2;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.15);
  color: var(--text-primary);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
}

.hero__unmute:hover {
  background: rgba(0, 168, 255, 0.2);
  border-color: var(--accent);
}

.hero__unmute.active .unmute-x1,
.hero__unmute.active .unmute-x2 {
  display: none;
}

.hero__unmute:not(.active) .unmute-x1,
.hero__unmute:not(.active) .unmute-x2 {
  display: block;
}

.hero__scroll-indicator {
  position: absolute;
  bottom: 32px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 1;
}

.hero__scroll-indicator span {
  display: block;
  width: 24px;
  height: 40px;
  border: 2px solid var(--text-muted);
  border-radius: 12px;
  position: relative;
}

.hero__scroll-indicator span::after {
  content: '';
  position: absolute;
  top: 6px;
  left: 50%;
  transform: translateX(-50%);
  width: 4px;
  height: 8px;
  background: var(--accent);
  border-radius: 2px;
  animation: scrollBounce 2s ease-in-out infinite;
}

@keyframes scrollBounce {
  0%, 100% { transform: translateX(-50%) translateY(0); opacity: 1; }
  50% { transform: translateX(-50%) translateY(12px); opacity: 0.3; }
}

/* --- Section Headers --- */
.section__header {
  text-align: center;
  margin-bottom: 64px;
}

.section__tag {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 2px;
  color: var(--accent);
  margin-bottom: 16px;
}

.section__title {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: 16px;
}

.section__desc {
  font-size: 1.1rem;
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto;
}

/* --- Service Cards --- */
.services {
  background: var(--bg-secondary);
}

.services__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 36px 28px;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--accent), transparent);
  opacity: 0;
  transition: opacity var(--transition);
}

.card:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-accent);
  transform: translateY(-4px);
  box-shadow: 0 12px 40px rgba(0, 168, 255, 0.06);
}

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

.card__icon {
  width: 48px;
  height: 48px;
  margin-bottom: 20px;
}

.card__title {
  font-size: 1.15rem;
  font-weight: 600;
  margin-bottom: 12px;
}

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

.card--link {
  display: block;
  text-decoration: none;
  cursor: pointer;
}

.card__link {
  display: inline-block;
  margin-top: 16px;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--accent);
  transition: var(--transition);
}

.card:hover .card__link {
  transform: translateX(4px);
}

/* --- About --- */
.about__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}

.about__text {
  font-size: 1.05rem;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 16px;
}

.about__stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
}

.stat {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px 24px;
  text-align: center;
  transition: var(--transition);
}

.stat:hover {
  border-color: var(--border-accent);
  box-shadow: 0 0 20px var(--accent-glow);
}

.stat__number {
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--accent);
  line-height: 1;
}

.stat__suffix {
  font-size: 2rem;
  font-weight: 700;
  color: var(--accent);
}

.stat__label {
  display: block;
  margin-top: 8px;
  font-size: 0.85rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 1px;
}

/* --- Process --- */
.process {
  background: var(--bg-secondary);
}

.process__timeline {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  position: relative;
}

.process__timeline::before {
  content: '';
  position: absolute;
  top: 40px;
  left: calc(12.5% + 12px);
  right: calc(12.5% + 12px);
  height: 2px;
  background: linear-gradient(90deg, var(--accent), var(--border-accent));
  opacity: 0.3;
}

.process__step {
  text-align: center;
  padding: 0 12px;
  position: relative;
}

.process__number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: var(--bg-card);
  border: 2px solid var(--accent);
  color: var(--accent);
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 20px;
  position: relative;
  z-index: 1;
  box-shadow: 0 0 20px var(--accent-glow);
}

.process__title {
  font-size: 1.15rem;
  font-weight: 600;
  margin-bottom: 12px;
}

.process__desc {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* --- Contact --- */
.contact__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: start;
}

.contact__text {
  font-size: 1.05rem;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 24px;
}

.contact__email {
  display: inline-block;
  font-size: 1.1rem;
  color: var(--accent);
  font-weight: 500;
  transition: var(--transition);
}

.contact__email:hover {
  color: #33baff;
}

.contact__form {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 40px;
}

.form__group {
  margin-bottom: 20px;
}

.form__label {
  display: block;
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-secondary);
  margin-bottom: 8px;
}

.form__input {
  width: 100%;
  padding: 12px 16px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-family: var(--font);
  font-size: 0.95rem;
  transition: border-color var(--transition), box-shadow var(--transition);
  outline: none;
}

.form__input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-glow);
}

.form__textarea {
  resize: vertical;
  min-height: 120px;
}

/* --- Footer --- */
.footer {
  background: var(--bg-secondary);
  border-top: 1px solid var(--border);
  padding: 64px 0 32px;
}

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

.footer__tagline {
  margin-top: 16px;
  font-size: 0.9rem;
  color: var(--text-muted);
  max-width: 300px;
}

.footer__heading {
  font-size: 0.85rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  color: var(--text-secondary);
  margin-bottom: 20px;
}

.footer__links ul {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.footer__links a {
  font-size: 0.9rem;
  color: var(--text-muted);
  transition: color var(--transition);
}

.footer__links a:hover {
  color: var(--accent);
}

.footer__bottom {
  border-top: 1px solid var(--border);
  padding-top: 24px;
  text-align: center;
  font-size: 0.85rem;
  color: var(--text-muted);
}

/* --- Responsive --- */
@media (max-width: 1024px) {
  .services__grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .process__timeline {
    grid-template-columns: repeat(2, 1fr);
    gap: 40px;
  }

  .process__timeline::before {
    display: none;
  }
}

@media (max-width: 768px) {
  .section {
    padding: 80px 0;
  }

  .nav__hamburger {
    display: flex;
  }

  .nav__menu {
    position: fixed;
    top: var(--nav-height);
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(10, 10, 15, 0.98);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 16px;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s;
  }

  .nav__menu.active {
    opacity: 1;
    pointer-events: all;
  }

  .nav__link {
    font-size: 1.2rem;
    padding: 12px 24px;
  }

  .nav__link--cta {
    margin-left: 0;
    margin-top: 8px;
  }

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

  .about__grid {
    grid-template-columns: 1fr;
    gap: 48px;
  }

  .process__timeline {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .contact__grid {
    grid-template-columns: 1fr;
    gap: 48px;
  }

  .contact__form {
    padding: 28px 20px;
  }

  .footer__grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }
}

@media (max-width: 480px) {
  .hero__title {
    font-size: 2rem;
  }

  .about__stats {
    grid-template-columns: 1fr 1fr;
    gap: 16px;
  }

  .stat {
    padding: 20px 16px;
  }

  .stat__number {
    font-size: 2rem;
  }
}

/* ========================================
   Service Detail Pages
   ======================================== */

/* --- Service Hero --- */
.service-hero {
  position: relative;
  padding: 160px 0 80px;
  overflow: hidden;
}

.service-hero__bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 70% 50% at 50% 30%, rgba(0, 168, 255, 0.1) 0%, transparent 70%),
    radial-gradient(ellipse 40% 60% at 80% 60%, rgba(0, 60, 200, 0.06) 0%, transparent 50%),
    var(--bg-primary);
  z-index: 0;
}

.service-hero__content {
  position: relative;
  z-index: 1;
  max-width: 800px;
}

.service-hero__back {
  display: inline-block;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--accent);
  margin-bottom: 24px;
  transition: var(--transition);
}

.service-hero__back:hover {
  color: #33baff;
  transform: translateX(-4px);
}

.service-hero__title {
  font-size: clamp(2.5rem, 5vw, 4rem);
  font-weight: 700;
  line-height: 1.1;
  margin-bottom: 24px;
}

.service-hero__subtitle {
  font-size: clamp(1.05rem, 2vw, 1.25rem);
  color: var(--text-secondary);
  line-height: 1.7;
  max-width: 640px;
}

/* --- Service Overview --- */
.service-overview {
  max-width: 800px;
  margin: 0 auto;
}

.service-overview p {
  font-size: 1.05rem;
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: 20px;
}

.service-overview p:last-child {
  margin-bottom: 0;
}

/* --- Use Cases --- */
.use-cases__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.use-case {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px 28px;
  transition: var(--transition);
}

.use-case:hover {
  border-color: var(--border-accent);
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(0, 168, 255, 0.05);
}

.use-case__title {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--accent);
  margin-bottom: 12px;
}

.use-case__desc {
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* --- Benefits --- */
.benefits__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.benefit {
  text-align: center;
  padding: 36px 20px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  transition: var(--transition);
}

.benefit:hover {
  border-color: var(--border-accent);
  transform: translateY(-4px);
  box-shadow: 0 12px 40px rgba(0, 168, 255, 0.06);
}

.benefit__stat {
  display: block;
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--accent);
  line-height: 1;
  margin-bottom: 12px;
}

.benefit__title {
  font-size: 1.05rem;
  font-weight: 600;
  margin-bottom: 12px;
}

.benefit__desc {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* --- Service Detail Responsive --- */
@media (max-width: 1024px) {
  .use-cases__grid {
    grid-template-columns: repeat(2, 1fr);
  }

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

@media (max-width: 768px) {
  .service-hero {
    padding: 120px 0 60px;
  }

  .use-cases__grid {
    grid-template-columns: 1fr;
  }

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

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

  .benefit__stat {
    font-size: 2rem;
  }
}