/* ============================================
   SPLITBRAIN — Design System & Styles
   ============================================ */

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

/* ---------- CSS Custom Properties ---------- */
:root {
  /* Colors */
  --bg-primary: #0a0e17;
  --bg-secondary: #0f1423;
  --bg-tertiary: #141a2e;
  --bg-card: rgba(20, 26, 46, 0.6);
  --bg-glass: rgba(15, 20, 35, 0.7);

  --text-primary: #f0f0f0;
  --text-secondary: #a0a8c0;
  --text-muted: #6b7394;

  --accent-orange: #ff6b2b;
  --accent-orange-light: #ff8f5e;
  --accent-cyan: #00c9db;
  --accent-cyan-light: #3ddef0;

  --gradient-primary: linear-gradient(
    135deg,
    var(--accent-orange),
    var(--accent-cyan)
  );
  --gradient-orange: linear-gradient(
    135deg,
    var(--accent-orange),
    var(--accent-orange-light)
  );
  --gradient-cyan: linear-gradient(
    135deg,
    var(--accent-cyan),
    var(--accent-cyan-light)
  );
  --gradient-hero:
    radial-gradient(
      ellipse at 30% 50%,
      rgba(255, 107, 43, 0.08) 0%,
      transparent 60%
    ),
    radial-gradient(
      ellipse at 70% 50%,
      rgba(0, 201, 219, 0.08) 0%,
      transparent 60%
    );

  --border-glass: rgba(255, 255, 255, 0.06);
  --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.3);
  --shadow-glow-orange: 0 0 40px rgba(255, 107, 43, 0.15);
  --shadow-glow-cyan: 0 0 40px rgba(0, 201, 219, 0.15);

  /* Typography */
  --font-heading: "Outfit", sans-serif;
  --font-body: "Inter", sans-serif;

  /* Spacing */
  --section-padding: 120px 0;
  --container-width: 1200px;
  --gap-sm: 12px;
  --gap-md: 24px;
  --gap-lg: 48px;
  --gap-xl: 80px;

  /* Borders */
  --radius-sm: 8px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --radius-full: 999px;

  /* Transitions */
  --transition-fast: 0.2s ease;
  --transition-base: 0.3s ease;
  --transition-slow: 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-body);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.7;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

ul,
ol {
  list-style: none;
}

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

/* ---------- Utility Classes ---------- */
.container {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 24px;
}

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

.section-label {
  font-family: var(--font-heading);
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: var(--accent-cyan);
  margin-bottom: var(--gap-sm);
  display: inline-block;
}

.section-title {
  font-family: var(--font-heading);
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: var(--gap-md);
}

.section-subtitle {
  font-size: 1.1rem;
  color: var(--text-secondary);
  max-width: 640px;
  line-height: 1.8;
}

/* ---------- Scroll Reveal ---------- */
.reveal {
  opacity: 0;
  transform: translateY(40px);
  transition:
    opacity 0.8s cubic-bezier(0.16, 1, 0.3, 1),
    transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

.reveal-delay-1 {
  transition-delay: 0.1s;
}
.reveal-delay-2 {
  transition-delay: 0.2s;
}
.reveal-delay-3 {
  transition-delay: 0.3s;
}
.reveal-delay-4 {
  transition-delay: 0.4s;
}

/* ============================================
   NAVBAR
   ============================================ */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: 20px 0;
  transition: all var(--transition-base);
}

.navbar.scrolled {
  background: var(--bg-glass);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-glass);
  padding: 12px 0;
}

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

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

.navbar-brand img {
  width: 42px;
  height: 42px;
}

.navbar-brand span {
  font-family: var(--font-heading);
  font-size: 1.4rem;
  font-weight: 700;
  letter-spacing: 1px;
}

.navbar-links {
  display: flex;
  align-items: center;
  gap: 36px;
}

.navbar-links a {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-secondary);
  transition: color var(--transition-fast);
  position: relative;
}

.navbar-links a::after {
  content: "";
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--gradient-primary);
  transition: width var(--transition-base);
  border-radius: 2px;
}

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

.navbar-links a:hover::after {
  width: 100%;
}

.navbar-cta {
  font-size: 0.85rem !important;
  font-weight: 600 !important;
  color: var(--text-primary) !important;
  background: var(--gradient-primary);
  padding: 10px 24px;
  border-radius: var(--radius-full);
  transition:
    transform var(--transition-fast),
    box-shadow var(--transition-fast) !important;
}

.navbar-cta::after {
  display: none !important;
}

.navbar-cta:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 20px rgba(255, 107, 43, 0.3);
}

/* Mobile menu toggle */
.navbar-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}

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

/* ============================================
   HERO SECTION
   ============================================ */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding-top: 80px;
  overflow: hidden;
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background: var(--gradient-hero);
  z-index: 0;
}

#hero-canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 800px;
}

.hero-logo {
  width: 120px;
  height: 120px;
  margin: 0 auto var(--gap-lg);
  animation: float 6s ease-in-out infinite;
  filter: drop-shadow(0 10px 30px rgba(255, 107, 43, 0.2))
    drop-shadow(0 10px 30px rgba(0, 201, 219, 0.2));
}

@keyframes float {
  0%,
  100% {
    transform: translateY(0px);
  }
  50% {
    transform: translateY(-16px);
  }
}

.hero-tagline {
  font-family: var(--font-heading);
  font-size: clamp(2.5rem, 6vw, 4.5rem);
  font-weight: 800;
  line-height: 1.1;
  margin-bottom: var(--gap-md);
  letter-spacing: -1px;
}

.hero-subtitle {
  font-size: clamp(1rem, 2vw, 1.25rem);
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto var(--gap-lg);
  line-height: 1.8;
}

.hero-cta-group {
  display: flex;
  gap: var(--gap-md);
  justify-content: center;
  flex-wrap: wrap;
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 16px 36px;
  font-family: var(--font-heading);
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-primary);
  background: var(--gradient-primary);
  border: none;
  border-radius: var(--radius-full);
  cursor: pointer;
  transition:
    transform var(--transition-fast),
    box-shadow var(--transition-fast);
}

.btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 30px rgba(255, 107, 43, 0.3);
}

.btn-secondary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 16px 36px;
  font-family: var(--font-heading);
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-primary);
  background: transparent;
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: all var(--transition-fast);
  backdrop-filter: blur(10px);
}

.btn-secondary:hover {
  border-color: var(--accent-cyan);
  background: rgba(0, 201, 219, 0.05);
  transform: translateY(-3px);
}

.hero-scroll-indicator {
  position: absolute;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  color: var(--text-muted);
  font-size: 0.75rem;
  letter-spacing: 2px;
  text-transform: uppercase;
  animation: pulse-down 2s ease-in-out infinite;
}

.hero-scroll-indicator .scroll-line {
  width: 1px;
  height: 40px;
  background: linear-gradient(to bottom, var(--accent-cyan), transparent);
}

@keyframes pulse-down {
  0%,
  100% {
    opacity: 0.5;
    transform: translateX(-50%) translateY(0);
  }
  50% {
    opacity: 1;
    transform: translateX(-50%) translateY(8px);
  }
}

/* ============================================
   ABOUT SECTION
   ============================================ */
.about {
  padding: var(--section-padding);
  position: relative;
}

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

.about-text .section-subtitle {
  margin-bottom: var(--gap-lg);
}

.about-stats {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--gap-md);
}

.stat-card {
  background: var(--bg-card);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-md);
  padding: 28px 24px;
  backdrop-filter: blur(10px);
  transition: all var(--transition-base);
}

.stat-card:hover {
  border-color: rgba(255, 107, 43, 0.2);
  transform: translateY(-4px);
  box-shadow: var(--shadow-glow-orange);
}

.stat-card .stat-number {
  font-family: var(--font-heading);
  font-size: 2.2rem;
  font-weight: 800;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 4px;
}

.stat-card .stat-label {
  font-size: 0.85rem;
  color: var(--text-muted);
}

.about-visual {
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
}

.about-visual-inner {
  width: 100%;
  max-width: 480px;
  aspect-ratio: 1;
  position: relative;
}

.orbit-ring {
  position: absolute;
  border: 1px solid var(--border-glass);
  border-radius: 50%;
  animation: orbit-spin 20s linear infinite;
}

.orbit-ring:nth-child(1) {
  inset: 10%;
  animation-duration: 25s;
}

.orbit-ring:nth-child(2) {
  inset: 25%;
  animation-duration: 18s;
  animation-direction: reverse;
}

.orbit-ring:nth-child(3) {
  inset: 40%;
  animation-duration: 15s;
}

.orbit-dot {
  position: absolute;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  top: -5px;
  left: 50%;
  transform: translateX(-50%);
}

.orbit-dot.orange {
  background: var(--accent-orange);
  box-shadow: 0 0 12px var(--accent-orange);
}
.orbit-dot.cyan {
  background: var(--accent-cyan);
  box-shadow: 0 0 12px var(--accent-cyan);
}

.orbit-center {
  position: absolute;
  inset: 35%;
  background: var(--bg-card);
  border: 1px solid var(--border-glass);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  backdrop-filter: blur(20px);
}

.orbit-center img {
  width: 60%;
  height: 60%;
  object-fit: contain;
}

@keyframes orbit-spin {
  from {
    transform: rotate(0deg);
  }
  to {
    transform: rotate(360deg);
  }
}

/* ============================================
   SERVICES SECTION
   ============================================ */
.services {
  padding: var(--section-padding);
  background: var(--bg-secondary);
  position: relative;
}

.services::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(
    to right,
    transparent,
    var(--border-glass),
    transparent
  );
}

.services-header {
  text-align: center;
  margin-bottom: var(--gap-xl);
}

.services-header .section-subtitle {
  margin: 0 auto;
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--gap-md);
}

.service-card {
  background: var(--bg-card);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-lg);
  padding: 40px 28px;
  backdrop-filter: blur(10px);
  transition: all var(--transition-slow);
  position: relative;
  overflow: hidden;
}

.service-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--gradient-primary);
  transform: scaleX(0);
  transition: transform var(--transition-base);
  transform-origin: left;
}

.service-card:hover {
  transform: translateY(-8px);
  border-color: rgba(0, 201, 219, 0.15);
  box-shadow: var(--shadow-card), var(--shadow-glow-cyan);
}

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

.service-icon {
  width: 56px;
  height: 56px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--gap-md);
  font-size: 1.6rem;
  position: relative;
}

.service-icon.orange {
  background: rgba(255, 107, 43, 0.1);
  color: var(--accent-orange);
}

.service-icon.cyan {
  background: rgba(0, 201, 219, 0.1);
  color: var(--accent-cyan);
}

.service-card h3 {
  font-family: var(--font-heading);
  font-size: 1.15rem;
  font-weight: 600;
  margin-bottom: 12px;
  color: var(--text-primary);
}

.service-card p {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* ============================================
   WHY US SECTION
   ============================================ */
.why-us {
  padding: var(--section-padding);
  position: relative;
}

.why-us-header {
  text-align: center;
  margin-bottom: var(--gap-xl);
}

.why-us-header .section-subtitle {
  margin: 0 auto;
}

.values-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--gap-md);
}

.value-card {
  background: var(--bg-card);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-lg);
  padding: 48px 32px;
  text-align: center;
  backdrop-filter: blur(10px);
  transition: all var(--transition-slow);
  position: relative;
}

.value-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-card);
  border-color: rgba(255, 107, 43, 0.15);
}

.value-icon {
  width: 72px;
  height: 72px;
  margin: 0 auto var(--gap-md);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.8rem;
  background: var(--bg-tertiary);
  border: 1px solid var(--border-glass);
}

.value-card h3 {
  font-family: var(--font-heading);
  font-size: 1.2rem;
  font-weight: 600;
  margin-bottom: 12px;
}

.value-card p {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* ============================================
   CTA SECTION
   ============================================ */
.cta-section {
  padding: var(--section-padding);
  background: var(--bg-secondary);
  position: relative;
  overflow: hidden;
}

.cta-section::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(
    ellipse at center,
    rgba(255, 107, 43, 0.06) 0%,
    transparent 70%
  );
}

.cta-inner {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--gap-xl);
  align-items: center;
}

.cta-text {
  max-width: 520px;
}

.cta-text .section-title {
  margin-bottom: var(--gap-md);
}

.cta-text .section-subtitle {
  margin-bottom: var(--gap-lg);
}

.contact-form {
  background: var(--bg-card);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-lg);
  padding: 40px;
  backdrop-filter: blur(20px);
}

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

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

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 14px 18px;
  font-family: var(--font-body);
  font-size: 0.95rem;
  color: var(--text-primary);
  background: var(--bg-tertiary);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-sm);
  outline: none;
  transition: border-color var(--transition-fast);
}

.form-group input:focus,
.form-group textarea:focus {
  border-color: var(--accent-cyan);
}

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

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

.form-submit {
  width: 100%;
  padding: 16px;
  font-family: var(--font-heading);
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-primary);
  background: var(--gradient-primary);
  border: none;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition:
    transform var(--transition-fast),
    box-shadow var(--transition-fast);
}

.form-submit:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 24px rgba(255, 107, 43, 0.3);
}

.form-success {
  display: none;
  text-align: center;
  padding: 32px;
}

.form-success.show {
  display: block;
}

.form-success h4 {
  font-family: var(--font-heading);
  font-size: 1.3rem;
  margin-bottom: 8px;
  color: var(--accent-cyan);
}

.form-success p {
  color: var(--text-secondary);
}

/* ============================================
   FOOTER
   ============================================ */
.footer {
  padding: 48px 0;
  border-top: 1px solid var(--border-glass);
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--gap-md);
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: 10px;
}

.footer-brand img {
  width: 32px;
  height: 32px;
}

.footer-brand span {
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 1.1rem;
}

.footer-copy {
  font-size: 0.85rem;
  color: var(--text-muted);
}

.footer-socials {
  display: flex;
  gap: 16px;
}

.footer-socials a {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  border: 1px solid var(--border-glass);
  color: var(--text-secondary);
  font-size: 1.1rem;
  transition: all var(--transition-fast);
}

.footer-socials a:hover {
  border-color: var(--accent-cyan);
  color: var(--accent-cyan);
  transform: translateY(-3px);
}

/* ============================================
   RESPONSIVE DESIGN
   ============================================ */

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

  .about-grid {
    gap: var(--gap-lg);
  }
}

/* Mobile */
@media (max-width: 768px) {
  :root {
    --section-padding: 80px 0;
  }

  .navbar-links {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--bg-primary);
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 32px;
    z-index: 999;
  }

  .navbar-links.open {
    display: flex;
  }

  .navbar-links a {
    font-size: 1.3rem;
  }

  .navbar-toggle {
    display: flex;
    z-index: 1001;
  }

  .navbar-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
  }
  .navbar-toggle.active span:nth-child(2) {
    opacity: 0;
  }
  .navbar-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
  }

  .hero-tagline {
    font-size: clamp(2rem, 8vw, 3rem);
  }

  .hero-logo {
    width: 90px;
    height: 90px;
  }

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

  .about-visual {
    order: -1;
  }

  .about-visual-inner {
    max-width: 300px;
  }

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

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

  .cta-inner {
    grid-template-columns: 1fr;
  }

  .footer-inner {
    flex-direction: column;
    text-align: center;
  }
}

@media (max-width: 480px) {
  .hero-cta-group {
    flex-direction: column;
    align-items: center;
  }

  .about-stats {
    grid-template-columns: 1fr;
  }

  .contact-form {
    padding: 28px 20px;
  }
}