/* ===== Variables ===== */
:root {
  --color-bg: #0a0e14;
  --color-bg-elevated: #111820;
  --color-surface: #161d28;
  --color-border: rgba(255, 255, 255, 0.06);
  --color-text: #e6edf3;
  --color-text-muted: #8b9cad;
  --color-accent: #f59e0b;
  --color-accent-dim: rgba(245, 158, 11, 0.15);
  --color-accent-glow: rgba(245, 158, 11, 0.25);
  --color-teal: #14b8a6;
  --color-teal-dim: rgba(20, 184, 166, 0.12);
  --font-heading: 'Outfit', sans-serif;
  --font-body: 'DM Sans', sans-serif;
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-xl: 28px;
  --transition: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.6;
  color: var(--color-text);
  background: var(--color-bg);
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

.noise-overlay {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 9999;
  opacity: 0.03;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

a {
  color: var(--color-accent);
  text-decoration: none;
  transition: color var(--transition), opacity var(--transition);
}

a:hover {
  color: var(--color-teal);
}

.container {
  width: 100%;
  max-width: 1140px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* ===== Header ===== */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding: 1rem 0;
  background: rgba(10, 14, 20, 0.7);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
  transition: background var(--transition), padding var(--transition);
}

.header.scrolled {
  padding: 0.6rem 0;
  background: rgba(10, 14, 20, 0.9);
}

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

.logo {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1.5rem;
  letter-spacing: -0.02em;
}

.logo-a4 {
  color: var(--color-text);
}

.logo-epo {
  color: var(--color-accent);
}

.nav-links {
  display: flex;
  list-style: none;
  gap: 2rem;
}

.nav-links a {
  color: var(--color-text-muted);
  font-weight: 500;
  font-size: 0.95rem;
}

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

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
}

.nav-toggle span {
  width: 24px;
  height: 2px;
  background: var(--color-text);
  transition: var(--transition);
}

/* ===== Buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.9rem 1.8rem;
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 0.95rem;
  border-radius: var(--radius-md);
  border: none;
  cursor: pointer;
  transition: transform var(--transition), box-shadow var(--transition), background var(--transition);
}

.btn-primary {
  background: linear-gradient(135deg, var(--color-accent), #d97706);
  color: #0a0e14;
  box-shadow: 0 4px 20px var(--color-accent-glow);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 28px var(--color-accent-glow);
}

.btn-secondary {
  background: transparent;
  color: var(--color-text);
  border: 2px solid rgba(255, 255, 255, 0.2);
}

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

/* ===== Hero ===== */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 6rem 0 4rem;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
}

.hero-gradient {
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 80% 60% at 50% 0%, var(--color-accent-dim) 0%, transparent 50%),
              radial-gradient(ellipse 60% 40% at 80% 60%, var(--color-teal-dim) 0%, transparent 45%),
              var(--color-bg);
}

.hero-mesh {
  position: absolute;
  inset: 0;
  background-image: 
    linear-gradient(rgba(255,255,255,0.02) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.02) 1px, transparent 1px);
  background-size: 60px 60px;
  animation: meshMove 20s linear infinite;
}

@keyframes meshMove {
  0% { transform: translate(0, 0); }
  100% { transform: translate(60px, 60px); }
}

.hero-shine {
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: conic-gradient(from 0deg at 50% 50%, transparent 0deg, rgba(245, 158, 11, 0.03) 60deg, transparent 120deg);
  animation: shineRotate 30s linear infinite;
}

@keyframes shineRotate {
  to { transform: rotate(360deg); }
}

.hero-content {
  position: relative;
  z-index: 1;
  text-align: center;
}

.hero-label {
  font-size: 0.85rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.2em;
  color: var(--color-accent);
  margin-bottom: 1rem;
}

.hero-title {
  font-family: var(--font-heading);
  font-size: clamp(2.2rem, 5vw, 3.8rem);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.03em;
  margin-bottom: 1.25rem;
  color: var(--color-text);
}

.hero-title .highlight {
  background: linear-gradient(135deg, var(--color-accent), var(--color-teal));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: 1.2rem;
  color: var(--color-text-muted);
  margin-bottom: 2.5rem;
  max-width: 480px;
  margin-left: auto;
  margin-right: auto;
}

.hero-cta {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  justify-content: center;
}

.hero-scroll {
  position: absolute;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  color: var(--color-text-muted);
  font-size: 0.8rem;
}

.scroll-indicator {
  width: 24px;
  height: 40px;
  border: 2px solid var(--color-text-muted);
  border-radius: 12px;
  position: relative;
  overflow: hidden;
}

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

@keyframes scrollBounce {
  0%, 100% { opacity: 1; transform: translateX(-50%) translateY(0); }
  50% { opacity: 0.5; transform: translateX(-50%) translateY(10px); }
}

/* Animate-in (hero) */
.animate-in {
  opacity: 0;
  transform: translateY(24px);
  animation: fadeInUp 0.8s var(--transition-slow) forwards;
}

.animate-in.delay-1 { animation-delay: 0.15s; }
.animate-in.delay-2 { animation-delay: 0.3s; }
.animate-in.delay-3 { animation-delay: 0.45s; }

@keyframes fadeInUp {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ===== Sections ===== */
.section {
  padding: 5rem 0;
  position: relative;
}

.section-label {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.2em;
  color: var(--color-accent);
  margin-bottom: 0.75rem;
}

.section-title {
  font-family: var(--font-heading);
  font-size: clamp(1.8rem, 3.5vw, 2.5rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 1rem;
  color: var(--color-text);
}

.section-subtitle {
  font-size: 1.05rem;
  color: var(--color-text-muted);
  max-width: 560px;
}

.section-subtitle a {
  color: var(--color-teal);
}

.section-header {
  margin-bottom: 3rem;
  max-width: 640px;
}

/* Scroll-triggered animation */
.animate-on-scroll {
  opacity: 0;
  transform: translateY(32px);
  transition: opacity 0.7s var(--transition-slow), transform 0.7s var(--transition-slow);
}

.animate-on-scroll.visible {
  opacity: 1;
  transform: translateY(0);
  transition-delay: calc(var(--delay, 0) * 0.08s);
}

/* ===== Services ===== */
.services {
  background: var(--color-bg-elevated);
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1.5rem;
  margin-bottom: 3rem;
}

.service-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 2rem;
  transition: transform var(--transition), border-color var(--transition), box-shadow var(--transition);
}

.service-card:hover {
  transform: translateY(-6px);
  border-color: rgba(245, 158, 11, 0.2);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
}

.card-icon {
  width: 48px;
  height: 48px;
  margin-bottom: 1.25rem;
  color: var(--color-accent);
}

.card-icon svg {
  width: 100%;
  height: 100%;
}

.service-card h3 {
  font-family: var(--font-heading);
  font-size: 1.15rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
  color: var(--color-text);
}

.service-card p {
  font-size: 0.95rem;
  color: var(--color-text-muted);
}

.features-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  justify-content: center;
}

.feature-pill {
  padding: 0.6rem 1.2rem;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 100px;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--color-text-muted);
  transition: color var(--transition), border-color var(--transition), background var(--transition);
}

.feature-pill:hover {
  color: var(--color-accent);
  border-color: var(--color-accent-dim);
  background: var(--color-accent-dim);
}

/* ===== About ===== */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}

.about-content .section-title {
  margin-bottom: 1.25rem;
}

.about-content p {
  color: var(--color-text-muted);
  margin-bottom: 1rem;
}

.about-highlight {
  color: var(--color-accent) !important;
  font-weight: 500;
}

.about-card {
  background: linear-gradient(135deg, var(--color-surface) 0%, var(--color-bg-elevated) 100%);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: 3rem;
  position: relative;
  overflow: hidden;
}

.about-card::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -50%;
  width: 100%;
  height: 100%;
  background: radial-gradient(circle, var(--color-accent-dim) 0%, transparent 60%);
  pointer-events: none;
}

.about-card-inner {
  position: relative;
  z-index: 1;
}

.big-number {
  font-family: var(--font-heading);
  font-size: 4rem;
  font-weight: 800;
  color: var(--color-accent);
  line-height: 1;
  display: block;
  margin-bottom: 1rem;
}

.about-card-inner p {
  color: var(--color-text-muted);
  font-size: 1.05rem;
}

/* ===== Contact ===== */
.contact {
  background: var(--color-bg-elevated);
}

.contact-wrapper {
  max-width: 560px;
  margin: 0 auto;
}

.form-success {
  background: var(--color-teal-dim);
  border: 1px solid rgba(20, 184, 166, 0.3);
  color: var(--color-teal);
  padding: 1rem 1.25rem;
  border-radius: var(--radius-md);
  margin-bottom: 1.5rem;
  font-weight: 500;
  opacity: 0;
  transform: translateY(-10px);
  transition: opacity var(--transition), transform var(--transition);
}

.form-success.visible {
  opacity: 1;
  transform: translateY(0);
}

.contact-form {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: 2.5rem;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.form-group-full {
  grid-column: 1 / -1;
}

.contact-form label {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--color-text-muted);
}

.contact-form input,
.contact-form textarea {
  width: 100%;
  padding: 0.9rem 1rem;
  font-family: var(--font-body);
  font-size: 1rem;
  color: var(--color-text);
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  transition: border-color var(--transition), box-shadow var(--transition);
}

.contact-form input::placeholder,
.contact-form textarea::placeholder {
  color: var(--color-text-muted);
  opacity: 0.7;
}

.contact-form input:focus,
.contact-form textarea:focus {
  outline: none;
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px var(--color-accent-dim);
}

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

.btn-submit {
  grid-column: 1 / -1;
  margin-top: 0.5rem;
  position: relative;
  min-height: 52px;
}

.btn-submit.loading .btn-text {
  opacity: 0;
}

.btn-submit .btn-loader {
  position: absolute;
  width: 24px;
  height: 24px;
  border: 2px solid transparent;
  border-top-color: currentColor;
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
  opacity: 0;
}

.btn-submit.loading .btn-loader {
  opacity: 1;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* ===== Footer ===== */
.footer {
  padding: 2.5rem 0;
  border-top: 1px solid var(--color-border);
  text-align: center;
}

.footer-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.75rem;
}

.footer-content p {
  font-size: 0.9rem;
  color: var(--color-text-muted);
}

.footer-email {
  font-weight: 500;
  color: var(--color-accent);
}

/* ===== Responsive ===== */
@media (max-width: 768px) {
  .nav-toggle {
    display: flex;
  }

  .nav-links {
    position: fixed;
    top: 0;
    right: -100%;
    width: 280px;
    height: 100vh;
    background: var(--color-bg-elevated);
    flex-direction: column;
    padding: 5rem 2rem 2rem;
    gap: 1rem;
    border-left: 1px solid var(--color-border);
    transition: right var(--transition);
  }

  .nav-links.open {
    right: 0;
  }

  .about-grid {
    grid-template-columns: 1fr;
    gap: 2.5rem;
  }

  .contact-form {
    grid-template-columns: 1fr;
    padding: 1.5rem;
  }

  .hero-cta {
    flex-direction: column;
    align-items: center;
  }

  .btn {
    width: 100%;
    max-width: 280px;
  }
}

@media (max-width: 480px) {
  .section {
    padding: 3.5rem 0;
  }

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

  .features-row {
    justify-content: flex-start;
  }
}

/* ===== Service subpages ===== */
.service-page main {
  padding-top: 5rem;
}

.breadcrumb {
  margin-bottom: 1.5rem;
  font-size: 0.9rem;
  color: var(--color-text-muted);
}

.breadcrumb a {
  color: var(--color-text-muted);
}

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

.breadcrumb span {
  margin: 0 0.4rem;
  opacity: 0.6;
}

.page-hero {
  padding: 2rem 0 3rem;
  border-bottom: 1px solid var(--color-border);
  margin-bottom: 3rem;
}

.page-hero h1 {
  font-family: var(--font-heading);
  font-size: clamp(1.8rem, 4vw, 2.5rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--color-text);
}

/* Two-column layout: content left, image right */
.service-page-layout {
  display: grid;
  grid-template-columns: 1fr 360px;
  gap: 3rem;
  align-items: start;
}

.service-content {
  max-width: 720px;
  min-width: 0;
}

.service-image-wrap {
  position: sticky;
  top: 6rem;
}

.service-image-wrap img {
  width: 100%;
  height: auto;
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  display: block;
}

.service-image-placeholder {
  aspect-ratio: 4 / 3;
  background: var(--color-surface);
  border: 1px dashed var(--color-border);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-muted);
  font-size: 0.9rem;
}

@media (max-width: 900px) {
  .service-page-layout {
    grid-template-columns: 1fr;
  }

  .service-image-wrap {
    position: static;
    max-width: 480px;
  }
}

.service-content .content-block {
  margin-bottom: 2.5rem;
}

.service-content .content-block h2 {
  font-family: var(--font-heading);
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--color-accent);
  margin-bottom: 0.75rem;
}

.service-content .content-block p {
  color: var(--color-text-muted);
  line-height: 1.7;
  margin-bottom: 0.75rem;
}

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

.service-content .content-list {
  list-style: none;
  color: var(--color-text-muted);
  line-height: 1.8;
}

.service-content .content-list li {
  padding-left: 1.25rem;
  position: relative;
  margin-bottom: 0.35rem;
}

.service-content .content-list li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0.6em;
  width: 5px;
  height: 5px;
  background: var(--color-accent);
  border-radius: 50%;
}

.service-content .content-specs p {
  margin-bottom: 0.5rem;
}

.service-cta {
  margin-top: 2.5rem;
  padding-top: 2rem;
  border-top: 1px solid var(--color-border);
}

a.service-card-link {
  display: block;
  color: inherit;
  text-decoration: none;
}

a.service-card-link:hover {
  color: inherit;
}

a.service-card-link .service-card:hover {
  border-color: rgba(245, 158, 11, 0.3);
}

/* ===== Gallery page ===== */
.page-hero-subtitle {
  margin-top: 0.5rem;
  font-size: 1.1rem;
  color: var(--color-text-muted);
}

.gallery-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1.5rem;
  margin-bottom: 3rem;
}

.gallery-item {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: transform var(--transition), border-color var(--transition), box-shadow var(--transition);
}

.gallery-item:hover {
  transform: translateY(-4px);
  border-color: rgba(245, 158, 11, 0.2);
  box-shadow: 0 16px 32px rgba(0, 0, 0, 0.25);
}

.gallery-placeholder {
  aspect-ratio: 4 / 3;
  background: var(--color-bg);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-muted);
  font-size: 0.9rem;
}

.gallery-item img {
  width: 100%;
  height: auto;
  display: block;
  aspect-ratio: 4 / 3;
  object-fit: cover;
}

.gallery-caption {
  padding: 1rem;
  font-size: 0.9rem;
  color: var(--color-text-muted);
}

/* ===== Image lightbox (zoom) ===== */
.image-lightbox {
  position: fixed;
  inset: 0;
  z-index: 1000;
  display: none;
  align-items: center;
  justify-content: center;
}

.image-lightbox.is-open {
  display: flex;
}

.image-lightbox-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.75);
  backdrop-filter: blur(6px);
}

.image-lightbox-img {
  position: relative;
  max-width: min(90vw, 1100px);
  max-height: 90vh;
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.7);
  z-index: 1;
}

.image-lightbox-close {
  position: absolute;
  top: 1.5rem;
  right: 1.5rem;
  z-index: 2;
  width: 40px;
  height: 40px;
  border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, 0.3);
  background: rgba(0, 0, 0, 0.4);
  color: #fff;
  font-size: 1.4rem;
  line-height: 1;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: background var(--transition), transform var(--transition), border-color var(--transition);
}

.image-lightbox-close:hover {
  background: rgba(0, 0, 0, 0.7);
  border-color: #fff;
  transform: translateY(-1px);
}

.gallery-cta {
  text-align: center;
  padding-top: 1rem;
}