/* ============================================
   Rustic Web Development — Futuristic UI
   Next-gen AI. Cyber-inspired design.
   ============================================ */

:root {
  --bg-deep: #050508;
  --bg-card: #0a0a0f;
  --bg-elevated: #0f0f18;
  --text-primary: #e8eaf0;
  --text-secondary: #9ca3b8;
  --text-muted: #5c6378;
  --accent: #00d4ff;
  --accent-secondary: #a855f7;
  --accent-glow: rgba(0, 212, 255, 0.4);
  --accent-glow-purple: rgba(168, 85, 247, 0.35);
  --border: rgba(0, 212, 255, 0.12);
  --font-display: "Syne", sans-serif;
  --font-body: "DM Sans", system-ui, sans-serif;
  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 1.5rem;
  --space-lg: 2.5rem;
  --space-xl: 4rem;
  --space-2xl: 6rem;
  --radius: 10px;
  --radius-lg: 16px;
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-body);
  font-size: 1.0625rem;
  line-height: 1.6;
  color: var(--text-primary);
  background: var(--bg-deep);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

a {
  color: var(--accent);
  text-decoration: none;
  transition: color var(--transition);
}
a:hover {
  color: var(--text-primary);
}

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

/* ----- Scroll reveal base ----- */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.7s cubic-bezier(0.4, 0, 0.2, 1), transform 0.7s cubic-bezier(0.4, 0, 0.2, 1);
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ----- Header ----- */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding: var(--space-md) var(--space-lg);
  background: rgba(5, 5, 8, 0.75);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
  animation: headerSlide 0.6s ease-out;
}

@keyframes headerSlide {
  from {
    opacity: 0;
    transform: translateY(-20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.header-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.35rem;
  color: var(--text-primary);
  letter-spacing: -0.02em;
  transition: text-shadow var(--transition);
}
.logo:hover {
  text-shadow: 0 0 20px var(--accent-glow);
}
.logo span {
  color: var(--accent);
}

.nav {
  display: flex;
  gap: var(--space-lg);
}
.nav a {
  color: var(--text-secondary);
  font-weight: 500;
  font-size: 0.9375rem;
  position: relative;
}
.nav a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -4px;
  width: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--accent), var(--accent-secondary));
  transition: width var(--transition);
}
.nav a:hover {
  color: var(--text-primary);
}
.nav a:hover::after {
  width: 100%;
}

.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 6px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
}
.menu-toggle span {
  width: 22px;
  height: 2px;
  background: var(--text-secondary);
  border-radius: 1px;
  transition: background var(--transition);
}
.menu-toggle:hover span {
  background: var(--accent);
}

/* ----- Hero ----- */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: calc(80px + var(--space-xl)) var(--space-lg) var(--space-2xl);
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  pointer-events: none;
}

.hero-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(0, 212, 255, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 212, 255, 0.04) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: radial-gradient(ellipse 90% 70% at 50% 40%, black, transparent 75%);
  animation: gridPulse 8s ease-in-out infinite;
}

@keyframes gridPulse {
  0%, 100% { opacity: 0.8; }
  50% { opacity: 1; }
}

.hero-glow {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.5;
  animation: glowFloat 12s ease-in-out infinite;
}
.hero-glow-1 {
  width: 60vw;
  height: 60vw;
  max-width: 600px;
  max-height: 600px;
  top: -10%;
  right: -15%;
  background: radial-gradient(circle, var(--accent-glow) 0%, transparent 70%);
}
.hero-glow-2 {
  width: 50vw;
  height: 50vw;
  max-width: 450px;
  max-height: 450px;
  bottom: -20%;
  left: -10%;
  background: radial-gradient(circle, var(--accent-glow-purple) 0%, transparent 70%);
  animation-delay: -4s;
}

@keyframes glowFloat {
  0%, 100% { transform: translate(0, 0) scale(1); }
  33% { transform: translate(3%, -3%) scale(1.05); }
  66% { transform: translate(-2%, 2%) scale(0.98); }
}

.hero-orb {
  position: absolute;
  border-radius: 50%;
  border: 1px solid rgba(0, 212, 255, 0.2);
  animation: orbFloat 15s linear infinite;
}
.hero-orb-1 {
  width: 300px;
  height: 300px;
  top: 30%;
  right: 15%;
  animation-duration: 20s;
  animation-direction: reverse;
}
.hero-orb-2 {
  width: 180px;
  height: 180px;
  bottom: 25%;
  right: 25%;
  animation-delay: -7s;
}

@keyframes orbFloat {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

.scanline {
  position: absolute;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, transparent, var(--accent), transparent);
  opacity: 0.15;
  animation: scan 4s linear infinite;
  box-shadow: 0 0 20px var(--accent-glow);
}

@keyframes scan {
  0% { top: 0; }
  100% { top: 100%; }
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 640px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--accent);
  margin-bottom: var(--space-md);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.badge-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 16px var(--accent), 0 0 32px var(--accent-glow);
  animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); box-shadow: 0 0 16px var(--accent), 0 0 32px var(--accent-glow); }
  50% { opacity: 0.8; transform: scale(1.15); box-shadow: 0 0 24px var(--accent), 0 0 48px var(--accent-glow); }
}

.hero-title {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(2.5rem, 6vw, 4rem);
  line-height: 1.1;
  letter-spacing: -0.03em;
  margin: 0 0 var(--space-md);
  color: var(--text-primary);
}
.hero-title em {
  font-style: normal;
  background: linear-gradient(135deg, var(--accent), var(--accent-secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-sub {
  font-size: 1.125rem;
  color: var(--text-secondary);
  margin: 0 0 var(--space-lg);
  max-width: 520px;
}

.hero-cta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.875rem 1.5rem;
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 0.9375rem;
  border-radius: var(--radius);
  transition: all var(--transition);
  cursor: pointer;
  border: none;
  position: relative;
  overflow: hidden;
}
.btn::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(255,255,255,0.1), transparent);
  opacity: 0;
  transition: opacity var(--transition);
}
.btn:hover::before {
  opacity: 1;
}

.btn-primary {
  background: linear-gradient(135deg, var(--accent), #0099cc);
  color: var(--bg-deep);
  box-shadow: 0 0 24px rgba(0, 212, 255, 0.3);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 0 36px var(--accent-glow), 0 4px 20px rgba(0, 212, 255, 0.25);
}

.btn-ghost {
  background: transparent;
  color: var(--text-secondary);
  border: 1px solid var(--border);
}
.btn-ghost:hover {
  color: var(--accent);
  border-color: var(--accent);
  box-shadow: 0 0 20px rgba(0, 212, 255, 0.15);
}

.btn-large {
  padding: 1rem 1.75rem;
  font-size: 1rem;
}

/* Hero visual cards */
.hero-visual {
  position: absolute;
  right: 5%;
  top: 50%;
  transform: translateY(-50%);
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
  z-index: 1;
}

.visual-card {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-sm) var(--space-md);
  background: rgba(10, 10, 15, 0.8);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 0.9375rem;
  color: var(--text-secondary);
  transition: all var(--transition);
  backdrop-filter: blur(8px);
}
.visual-card:hover {
  transform: translateX(8px);
  border-color: var(--accent);
  color: var(--accent);
  box-shadow: 0 0 24px rgba(0, 212, 255, 0.2);
}

.card-icon {
  color: var(--accent);
  font-size: 1.25rem;
}

.visual-card-2 { margin-left: 24px; }
.visual-card-3 { margin-left: 48px; }

@media (max-width: 900px) {
  .hero-visual {
    position: static;
    transform: none;
    margin-top: var(--space-xl);
    flex-direction: row;
    flex-wrap: wrap;
  }
  .visual-card-2,
  .visual-card-3 { margin-left: 0; }
}

/* ----- Container ----- */
.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 var(--space-lg);
}

/* ----- Sections ----- */
section {
  padding: var(--space-2xl) 0;
}

.section-badge {
  font-size: 0.8125rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--accent);
  margin: 0 0 var(--space-sm);
}

.section-title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(2rem, 4vw, 2.75rem);
  letter-spacing: -0.02em;
  margin: 0 0 var(--space-md);
  color: var(--text-primary);
}

.section-desc {
  font-size: 1.125rem;
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 0 var(--space-xl);
}

/* ----- Services ----- */
.services {
  background: var(--bg-card);
  position: relative;
}
.services::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--accent), transparent);
  opacity: 0.3;
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--space-lg);
  margin-top: var(--space-lg);
}

.service-card {
  padding: var(--space-lg);
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
}
.service-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--accent), var(--accent-secondary));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition);
}
.service-card:hover {
  border-color: rgba(0, 212, 255, 0.35);
  transform: translateY(-6px);
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.4), 0 0 40px rgba(0, 212, 255, 0.08);
}
.service-card:hover::before {
  transform: scaleX(1);
}

.service-icon {
  width: 48px;
  height: 48px;
  margin-bottom: var(--space-md);
  color: var(--accent);
  transition: transform var(--transition);
}
.service-card:hover .service-icon {
  transform: scale(1.1);
}
.service-icon svg {
  width: 100%;
  height: 100%;
}

.service-card h3 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.25rem;
  margin: 0 0 var(--space-sm);
  color: var(--text-primary);
}

.service-card p {
  margin: 0;
  font-size: 0.9375rem;
  color: var(--text-secondary);
  line-height: 1.65;
}

/* ----- AI Section ----- */
.ai-section {
  background: var(--bg-deep);
  position: relative;
}
.ai-section::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 80% 50% at 50% 50%, rgba(168, 85, 247, 0.06), transparent);
  pointer-events: none;
}

.ai-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-2xl);
  align-items: center;
}

.ai-lead {
  font-size: 1.125rem;
  color: var(--text-secondary);
  margin: 0 0 var(--space-lg);
  line-height: 1.65;
}

.ai-list {
  list-style: none;
  padding: 0;
  margin: 0;
}
.ai-list li {
  padding: var(--space-sm) 0;
  padding-left: var(--space-md);
  border-left: 3px solid var(--accent);
  margin-bottom: var(--space-sm);
  color: var(--text-secondary);
  font-size: 0.9375rem;
  transition: transform var(--transition), padding-left var(--transition), box-shadow var(--transition);
}
.ai-list li:hover {
  padding-left: var(--space-md);
  transform: translateX(4px);
  box-shadow: 0 0 20px rgba(0, 212, 255, 0.1);
}
.ai-list strong {
  color: var(--text-primary);
  display: block;
  margin-bottom: 2px;
}

.ai-visual {
  display: flex;
  justify-content: center;
  align-items: center;
}

.ai-card {
  width: 280px;
  padding: var(--space-lg);
  background: linear-gradient(145deg, rgba(0, 212, 255, 0.06), rgba(168, 85, 247, 0.06));
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  position: relative;
  overflow: hidden;
  box-shadow: 0 0 40px rgba(0, 212, 255, 0.1);
}
.ai-card::before {
  content: "";
  position: absolute;
  inset: -2px;
  background: linear-gradient(135deg, var(--accent), var(--accent-secondary));
  opacity: 0;
  z-index: 0;
  border-radius: inherit;
  transition: opacity var(--transition);
}
.ai-card:hover::before {
  opacity: 0.15;
  animation: borderRotate 4s linear infinite;
}

@keyframes borderRotate {
  0% { filter: hue-rotate(0deg); }
  100% { filter: hue-rotate(360deg); }
}

.ai-card-label {
  position: relative;
  z-index: 2;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.5rem;
  color: var(--accent);
  display: block;
  margin-bottom: var(--space-md);
  text-shadow: 0 0 20px var(--accent-glow);
}

.ai-card-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
  position: relative;
  z-index: 2;
}
.ai-card-grid span {
  aspect-ratio: 1;
  background: rgba(0, 212, 255, 0.12);
  border-radius: 6px;
  animation: ai-grid-pulse 2s ease-in-out infinite;
  border: 1px solid rgba(0, 212, 255, 0.2);
}
.ai-card-grid span:nth-child(1) { animation-delay: 0s; }
.ai-card-grid span:nth-child(2) { animation-delay: 0.2s; }
.ai-card-grid span:nth-child(3) { animation-delay: 0.4s; }
.ai-card-grid span:nth-child(4) { animation-delay: 0.1s; }
.ai-card-grid span:nth-child(5) { animation-delay: 0.3s; }
.ai-card-grid span:nth-child(6) { animation-delay: 0.5s; }

@keyframes ai-grid-pulse {
  0%, 100% { opacity: 0.5; transform: scale(1); }
  50% { opacity: 1; transform: scale(1.02); }
}

@media (max-width: 768px) {
  .hero {
    min-height: auto;
    padding: calc(72px + var(--space-lg)) var(--space-sm) var(--space-xl);
    flex-direction: column;
    align-items: flex-start;
  }
  .hero-visual {
    position: static;
    transform: none;
    margin-top: var(--space-lg);
  }
  .container {
    padding: 0 var(--space-sm);
  }
  .site-header {
    padding: var(--space-sm) var(--space-md);
  }
  .ai-inner {
    grid-template-columns: 1fr;
  }
  .ai-visual {
    order: -1;
  }
}

/* ----- Contact ----- */
.contact {
  background: var(--bg-card);
  position: relative;
}
.contact .btn-primary:hover {
  animation: btnGlow 1.5s ease-in-out infinite;
}

@keyframes btnGlow {
  0%, 100% { box-shadow: 0 0 36px var(--accent-glow), 0 4px 20px rgba(0, 212, 255, 0.25); }
  50% { box-shadow: 0 0 48px var(--accent-glow), 0 4px 24px rgba(0, 212, 255, 0.4); }
}

.contact-actions {
  margin-top: var(--space-lg);
}

.contact-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
}

.contact-form {
  margin-top: var(--space-xl);
  max-width: 560px;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-md);
}

.form-group {
  margin-bottom: var(--space-md);
}

.form-group label {
  display: block;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: var(--space-xs);
}

.contact-form input,
.contact-form textarea {
  width: 100%;
  padding: 0.875rem 1rem;
  font-family: var(--font-body);
  font-size: 1rem;
  color: var(--text-primary);
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  transition: border-color var(--transition), box-shadow var(--transition);
}

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

.contact-form input:focus,
.contact-form textarea:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(0, 212, 255, 0.15);
}

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

.contact-form button[type="submit"] {
  margin-top: var(--space-sm);
}

.contact-form button[type="submit"]:disabled {
  opacity: 0.8;
  cursor: not-allowed;
}

.form-feedback {
  margin-top: var(--space-md);
  padding: var(--space-md);
  border-radius: var(--radius);
  font-weight: 500;
  display: none;
}

.form-feedback:not(:empty) {
  display: block;
}

.form-feedback--success {
  background: rgba(0, 212, 255, 0.12);
  border: 1px solid rgba(0, 212, 255, 0.3);
  color: var(--accent);
}

.form-feedback--error {
  background: rgba(255, 100, 100, 0.1);
  border: 1px solid rgba(255, 100, 100, 0.3);
  color: #ff8a8a;
}

.contact-form.form-sent .form-row,
.contact-form.form-sent .form-group,
.contact-form.form-sent button[type="submit"] {
  display: none;
}

@media (max-width: 480px) {
  .hero-orb {
    display: none;
  }
}

@media (max-width: 540px) {
  .form-row {
    grid-template-columns: 1fr;
  }
}

.contact-note {
  margin-top: var(--space-md);
  font-size: 0.9375rem;
  color: var(--text-muted);
}

/* ----- Footer ----- */
.site-footer {
  padding: var(--space-xl) 0;
  border-top: 1px solid var(--border);
  position: relative;
}
.site-footer::before {
  content: "";
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 60%;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--accent), transparent);
  opacity: 0.4;
}

.footer-inner {
  text-align: center;
}

.footer-inner .logo {
  display: inline-block;
  margin-bottom: var(--space-sm);
}

.footer-tagline {
  font-size: 0.9375rem;
  color: var(--text-muted);
  margin: 0 0 var(--space-xs);
}

.footer-copy {
  font-size: 0.8125rem;
  color: var(--text-muted);
  margin: 0;
}

/* ----- Mobile nav ----- */
@media (max-width: 640px) {
  .nav {
    display: none;
  }
  .nav.nav-open {
    display: flex;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    flex-direction: column;
    gap: 1rem;
    padding: 1.5rem;
    background: var(--bg-deep);
    border-bottom: 1px solid var(--border);
  }
  .menu-toggle {
    display: flex;
  }
}