/* ========================================
   NextGen Business Solutions
   Design System — Apple-Inspired Minimalism
   ======================================== */

/* --- Custom Properties --- */
:root {
  --white: #ffffff;
  --off-white: #f5f5f7;
  --black: #000000;
  --near-black: #1d1d1f;
  --gray-100: #f5f5f7;
  --gray-200: #e8e8ed;
  --gray-300: #d2d2d7;
  --gray-400: #aeaeb2;
  --gray-500: #86868b;
  --gray-600: #6e6e73;
  --gray-700: #48484a;
  --gray-800: #2c2c2e;
  --gray-900: #1c1c1e;

  --accent: #2563eb;
  --accent-hover: #1d4ed8;
  --accent-light: rgba(37, 99, 235, 0.08);

  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;

  --text-xs: 0.75rem;
  --text-sm: 0.875rem;
  --text-base: 1.0625rem;
  --text-lg: 1.25rem;
  --text-xl: 1.5rem;
  --text-2xl: 2rem;
  --text-3xl: 2.5rem;
  --text-4xl: 3.5rem;
  --text-5xl: 4.5rem;
  --text-6xl: 6rem;

  --radius-sm: 0.5rem;
  --radius-md: 1rem;
  --radius-lg: 1.5rem;
  --radius-xl: 2rem;

  --shadow-sm: 0 1px 2px rgba(0,0,0,0.04);
  --shadow-md: 0 4px 16px rgba(0,0,0,0.06);
  --shadow-lg: 0 8px 32px rgba(0,0,0,0.08);
  --shadow-xl: 0 16px 48px rgba(0,0,0,0.1);

  --transition: 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  --transition-slow: 0.6s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

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

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-sans);
  font-size: var(--text-base);
  line-height: 1.6;
  color: var(--near-black);
  background: var(--white);
  overflow-x: hidden;
}

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

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

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
}

ul, ol {
  list-style: none;
}

/* --- Typography --- */
h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.025em;
}

.text-gradient {
  background: linear-gradient(135deg, var(--accent), #7c3aed);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* --- Layout --- */
.container {
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 2rem;
}

.container-narrow {
  max-width: 800px;
  margin: 0 auto;
  padding: 0 2rem;
}

.section {
  padding: 7rem 0;
}

.section-dark {
  background: var(--black);
  color: var(--white);
}

.section-alt {
  background: var(--off-white);
}

/* --- Navigation --- */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: 1rem 0;
  transition: var(--transition);
}

.nav.scrolled {
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: saturate(180%) blur(20px);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  border-bottom: 1px solid var(--gray-200);
  padding: 0.65rem 0;
}

.nav.scrolled .nav-logo,
.nav.scrolled .nav-links a {
  color: var(--near-black);
}

.nav-container {
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: -0.03em;
  color: var(--white);
  transition: var(--transition);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 2rem;
}

.nav-links a {
  font-size: var(--text-sm);
  font-weight: 400;
  color: rgba(255, 255, 255, 0.85);
  transition: var(--transition);
  position: relative;
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 1.5px;
  background: var(--accent);
  transition: var(--transition);
}

.nav-links a:hover::after,
.nav-links a.active::after {
  width: 100%;
}

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

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

/* Nav: light variant for non-dark-hero pages */
.nav-light .nav-logo,
.nav-light .nav-links a {
  color: var(--near-black);
}

.nav-light .nav-links a {
  color: var(--gray-600);
}

.nav-light .nav-links a:hover {
  color: var(--near-black);
}

/* Mobile Nav Toggle */
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 4px;
  z-index: 1001;
}

.nav-toggle span {
  display: block;
  width: 22px;
  height: 1.5px;
  background: var(--white);
  transition: var(--transition);
}

.nav.scrolled .nav-toggle span,
.nav-light .nav-toggle span {
  background: var(--near-black);
}

.nav-toggle.active span:nth-child(1) {
  transform: rotate(45deg) translate(4px, 5px);
}

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

.nav-toggle.active span:nth-child(3) {
  transform: rotate(-45deg) translate(4px, -5px);
}

/* --- Hero Sections --- */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  position: relative;
  overflow: hidden;
  background: var(--black);
  color: var(--white);
  padding: 8rem 2rem 6rem;
}

.hero-compact {
  min-height: 70vh;
  padding: 10rem 2rem 5rem;
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 900px;
}

.hero-title {
  font-size: clamp(3rem, 8vw, var(--text-6xl));
  font-weight: 800;
  letter-spacing: -0.04em;
  line-height: 1;
  margin-bottom: 1.5rem;
}

.hero-subtitle {
  font-size: clamp(1rem, 2.5vw, var(--text-xl));
  font-weight: 300;
  color: var(--gray-400);
  max-width: 600px;
  margin: 0 auto 2.5rem;
  line-height: 1.5;
}

.hero-label {
  display: inline-block;
  font-size: var(--text-xs);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--accent);
  margin-bottom: 1.5rem;
}

/* Animated Gradient Orb */
.hero-orb {
  position: absolute;
  width: 800px;
  height: 800px;
  border-radius: 50%;
  filter: blur(120px);
  opacity: 0.15;
  animation: orbFloat 20s ease-in-out infinite;
}

.hero-orb-1 {
  background: radial-gradient(circle, #2563eb, #7c3aed);
  top: -200px;
  right: -200px;
}

.hero-orb-2 {
  background: radial-gradient(circle, #7c3aed, #ec4899);
  bottom: -300px;
  left: -200px;
  animation-delay: -10s;
}

@keyframes orbFloat {
  0%, 100% { transform: translate(0, 0) scale(1); }
  25% { transform: translate(30px, -30px) scale(1.05); }
  50% { transform: translate(-20px, 20px) scale(0.95); }
  75% { transform: translate(20px, 10px) scale(1.02); }
}

/* --- Section Headers --- */
.section-header {
  text-align: center;
  margin-bottom: 4rem;
}

.section-label {
  display: inline-block;
  font-size: var(--text-xs);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--accent);
  margin-bottom: 1rem;
}

.section-title {
  font-size: clamp(2rem, 5vw, var(--text-4xl));
  font-weight: 700;
  letter-spacing: -0.03em;
  margin-bottom: 1rem;
}

.section-subtitle {
  font-size: var(--text-lg);
  color: var(--gray-600);
  max-width: 600px;
  margin: 0 auto;
  line-height: 1.5;
}

.section-dark .section-subtitle {
  color: var(--gray-400);
}

/* --- Cards --- */
.card-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 2rem;
}

.card-grid-3 {
  grid-template-columns: repeat(3, 1fr);
}

.card-grid-4 {
  grid-template-columns: repeat(4, 1fr);
}

.card {
  background: var(--white);
  border-radius: var(--radius-lg);
  padding: 2.5rem;
  border: 1px solid var(--gray-200);
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: transparent;
}

.card-dark {
  background: var(--gray-900);
  border-color: rgba(255, 255, 255, 0.08);
  color: var(--white);
}

.card-dark:hover {
  border-color: rgba(255, 255, 255, 0.15);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
}

.card-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-md);
  background: var(--accent-light);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.5rem;
  color: var(--accent);
}

.card-dark .card-icon {
  background: rgba(37, 99, 235, 0.15);
}

.card-title {
  font-size: var(--text-xl);
  font-weight: 600;
  margin-bottom: 0.75rem;
  letter-spacing: -0.02em;
}

.card-text {
  font-size: var(--text-base);
  color: var(--gray-600);
  line-height: 1.6;
}

.card-dark .card-text {
  color: var(--gray-400);
}

.card-link {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  margin-top: 1.5rem;
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--accent);
  transition: var(--transition);
}

.card-link:hover {
  gap: 0.75rem;
}

.card-link svg {
  width: 16px;
  height: 16px;
  transition: var(--transition);
}

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.875rem 2rem;
  font-size: var(--text-sm);
  font-weight: 500;
  border-radius: 980px;
  transition: var(--transition);
  letter-spacing: -0.01em;
}

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

.btn-primary:hover {
  background: var(--accent-hover);
  transform: scale(1.02);
}

.btn-secondary {
  background: transparent;
  color: var(--accent);
  border: 1.5px solid var(--accent);
}

.btn-secondary:hover {
  background: var(--accent);
  color: var(--white);
}

.btn-white {
  background: var(--white);
  color: var(--near-black);
}

.btn-white:hover {
  background: var(--off-white);
  transform: scale(1.02);
}

.btn-ghost {
  background: rgba(255, 255, 255, 0.1);
  color: var(--white);
  border: 1.5px solid rgba(255, 255, 255, 0.2);
}

.btn-ghost:hover {
  background: rgba(255, 255, 255, 0.15);
  border-color: rgba(255, 255, 255, 0.3);
}

.btn-group {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  justify-content: center;
}

/* --- Split Layout --- */
.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}

.split-content {
  max-width: 520px;
}

.split-content .section-label {
  text-align: left;
}

.split-content .section-title {
  text-align: left;
  margin-bottom: 1.5rem;
}

.split-content p {
  color: var(--gray-600);
  margin-bottom: 2rem;
  line-height: 1.7;
}

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

/* Abstract Visual Placeholders */
.visual-block {
  width: 100%;
  aspect-ratio: 4/3;
  border-radius: var(--radius-xl);
  position: relative;
  overflow: hidden;
}

.visual-block-gradient {
  background: linear-gradient(135deg, #1a1a2e 0%, #16213e 50%, #0f3460 100%);
}

.visual-block-mesh {
  background:
    radial-gradient(at 20% 80%, rgba(37, 99, 235, 0.3) 0%, transparent 50%),
    radial-gradient(at 80% 20%, rgba(124, 58, 237, 0.3) 0%, transparent 50%),
    radial-gradient(at 50% 50%, rgba(236, 72, 153, 0.15) 0%, transparent 50%),
    var(--black);
}

.visual-block-light {
  background:
    radial-gradient(at 20% 80%, rgba(37, 99, 235, 0.08) 0%, transparent 50%),
    radial-gradient(at 80% 20%, rgba(124, 58, 237, 0.08) 0%, transparent 50%),
    var(--off-white);
  border: 1px solid var(--gray-200);
}

/* Floating elements inside visual blocks */
.visual-block .float-card {
  position: absolute;
  background: rgba(255, 255, 255, 0.06);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-md);
  padding: 1.25rem 1.5rem;
}

.visual-block .float-card-1 {
  top: 15%;
  left: 10%;
  animation: floatCard 6s ease-in-out infinite;
}

.visual-block .float-card-2 {
  bottom: 20%;
  right: 10%;
  animation: floatCard 6s ease-in-out infinite 3s;
}

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

/* --- Feature List --- */
.feature-list {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.feature-item {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
}

.feature-icon {
  flex-shrink: 0;
  width: 24px;
  height: 24px;
  color: var(--accent);
  margin-top: 2px;
}

.feature-item p {
  margin: 0;
  color: var(--gray-600);
}

/* --- Stats Row --- */
.stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 2rem;
  text-align: center;
  padding: 4rem 0;
}

.stat-number {
  font-size: var(--text-4xl);
  font-weight: 800;
  letter-spacing: -0.04em;
  line-height: 1;
  margin-bottom: 0.5rem;
}

.stat-label {
  font-size: var(--text-sm);
  color: var(--gray-500);
  font-weight: 400;
}

.section-dark .stat-label {
  color: var(--gray-400);
}

/* --- Values Grid --- */
.values-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 3rem;
}

.value-item h3 {
  font-size: var(--text-xl);
  font-weight: 600;
  margin-bottom: 0.5rem;
}

.value-item p {
  color: var(--gray-600);
  line-height: 1.6;
}

/* --- Process Steps --- */
.process-steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 2rem;
  counter-reset: step;
}

.process-step {
  position: relative;
  padding-top: 3rem;
  counter-increment: step;
}

.process-step::before {
  content: counter(step, decimal-leading-zero);
  position: absolute;
  top: 0;
  font-size: var(--text-3xl);
  font-weight: 800;
  color: var(--gray-200);
  letter-spacing: -0.03em;
}

.section-dark .process-step::before {
  color: var(--gray-800);
}

.process-step h3 {
  font-size: var(--text-lg);
  font-weight: 600;
  margin-bottom: 0.5rem;
}

.process-step p {
  font-size: var(--text-sm);
  color: var(--gray-600);
  line-height: 1.6;
}

.section-dark .process-step p {
  color: var(--gray-400);
}

/* --- CTA Band --- */
.cta-band {
  text-align: center;
  padding: 6rem 2rem;
  background: var(--black);
  color: var(--white);
  position: relative;
  overflow: hidden;
}

.cta-band .hero-orb {
  opacity: 0.1;
}

.cta-band h2 {
  font-size: clamp(2rem, 4vw, var(--text-4xl));
  font-weight: 700;
  letter-spacing: -0.03em;
  margin-bottom: 1rem;
  position: relative;
  z-index: 2;
}

.cta-band p {
  color: var(--gray-400);
  font-size: var(--text-lg);
  margin-bottom: 2.5rem;
  position: relative;
  z-index: 2;
}

.cta-band .btn-group {
  position: relative;
  z-index: 2;
}

/* --- Form --- */
.form-group {
  margin-bottom: 1.5rem;
}

.form-label {
  display: block;
  font-size: var(--text-sm);
  font-weight: 500;
  margin-bottom: 0.5rem;
  color: var(--near-black);
}

.form-input,
.form-select,
.form-textarea {
  width: 100%;
  padding: 0.875rem 1rem;
  font-family: var(--font-sans);
  font-size: var(--text-base);
  color: var(--near-black);
  background: var(--white);
  border: 1.5px solid var(--gray-300);
  border-radius: var(--radius-md);
  transition: var(--transition);
  outline: none;
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-light);
}

.form-textarea {
  min-height: 160px;
  resize: vertical;
}

/* --- Footer --- */
.footer {
  background: var(--black);
  color: var(--gray-400);
  padding: 5rem 0 2rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 4rem;
  padding-bottom: 4rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.footer-logo {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--white);
  display: inline-block;
  margin-bottom: 1rem;
}

.footer-brand p {
  font-size: var(--text-sm);
  line-height: 1.6;
  max-width: 300px;
}

.footer-links h4 {
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--white);
  margin-bottom: 1.25rem;
  letter-spacing: -0.01em;
}

.footer-links a {
  display: block;
  font-size: var(--text-sm);
  color: var(--gray-500);
  margin-bottom: 0.75rem;
  transition: var(--transition);
}

.footer-links a:hover {
  color: var(--white);
}

.footer-bottom {
  padding-top: 2rem;
  text-align: center;
}

.footer-bottom p {
  font-size: var(--text-xs);
  color: var(--gray-600);
}

/* --- Scroll Animations --- */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94),
              transform 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.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; }

/* --- Utilities --- */
.text-center { text-align: center; }
.mb-1 { margin-bottom: 0.5rem; }
.mb-2 { margin-bottom: 1rem; }
.mb-3 { margin-bottom: 1.5rem; }
.mb-4 { margin-bottom: 2rem; }
.mb-6 { margin-bottom: 3rem; }
.mt-2 { margin-top: 1rem; }
.mt-4 { margin-top: 2rem; }

/* --- Responsive --- */
@media (max-width: 1024px) {
  .card-grid-3,
  .card-grid-4 {
    grid-template-columns: repeat(2, 1fr);
  }

  .process-steps {
    grid-template-columns: repeat(2, 1fr);
    gap: 2.5rem;
  }

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

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

  .nav-links {
    position: fixed;
    top: 0;
    right: -100%;
    width: 100%;
    height: 100vh;
    background: var(--white);
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 2rem;
    transition: right 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  }

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

  .nav-links a {
    font-size: var(--text-xl);
    color: var(--near-black) !important;
    font-weight: 500;
  }

  .nav-links a::after {
    display: none;
  }

  .hero {
    padding: 7rem 1.5rem 4rem;
    min-height: 85vh;
  }

  .hero-compact {
    min-height: 60vh;
    padding: 8rem 1.5rem 4rem;
  }

  .section {
    padding: 4rem 0;
  }

  .split {
    grid-template-columns: 1fr;
    gap: 3rem;
  }

  .split-reverse .split-content {
    order: -1;
  }

  .card-grid,
  .card-grid-3,
  .card-grid-4 {
    grid-template-columns: 1fr;
  }

  .values-grid {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  .process-steps {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  .stats {
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
  }

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

  .container {
    padding: 0 1.5rem;
  }
}

@media (max-width: 480px) {
  .hero-title {
    font-size: 2.5rem;
  }

  .btn-group {
    flex-direction: column;
    align-items: center;
  }

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

  .stat-number {
    font-size: var(--text-3xl);
  }
}