/* ============================================
   QUANTIR - Brand Stylesheet
   Micro SaaS + GCC Intelligence
   ============================================ */

/* ---------- CSS Variables (Brand Kit) ---------- */
:root {
  /* Primary Colors */
  --midnight-blue: #1B2A41;
  --electric-teal: #1ABC9C;
  --lime-accent: #A3D400;
  --cloud-white: #F7F9FB;
  --graphite-gray: #3A3A3A;
  
  /* Extended Palette */
  --midnight-light: #243552;
  --teal-dark: #159B80;
  --teal-light: #1ED4AF;
  --gray-light: #6B7280;
  --gray-muted: #9CA3AF;
  --white: #FFFFFF;
  --black: #0D1117;
  
  /* Typography */
  --font-display: 'Plus Jakarta Sans', sans-serif;
  --font-body: 'Inter', sans-serif;
  
  /* Spacing */
  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 1.5rem;
  --space-lg: 2rem;
  --space-xl: 3rem;
  --space-2xl: 5rem;
  --space-3xl: 8rem;
  
  /* Border Radius */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  
  /* Shadows */
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.07);
  --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.1);
  --shadow-xl: 0 20px 50px rgba(0, 0, 0, 0.15);
  
  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-base: 250ms ease;
  --transition-slow: 400ms ease;
}

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

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

body {
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.6;
  color: var(--graphite-gray);
  background-color: var(--cloud-white);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

a {
  color: var(--electric-teal);
  text-decoration: none;
  transition: color var(--transition-fast);
}

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

ul, ol {
  list-style: none;
}

/* ---------- Typography ---------- */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  font-weight: 700;
  line-height: 1.2;
  color: var(--midnight-blue);
}

h1 {
  font-size: clamp(2.5rem, 5vw, 4rem);
  letter-spacing: -0.02em;
}

h2 {
  font-size: clamp(2rem, 4vw, 3rem);
  letter-spacing: -0.01em;
}

h3 {
  font-size: clamp(1.5rem, 3vw, 2rem);
}

h4 {
  font-size: 1.25rem;
}

p {
  margin-bottom: var(--space-sm);
}

.text-large {
  font-size: 1.25rem;
  line-height: 1.7;
}

.text-small {
  font-size: 0.875rem;
}

.text-muted {
  color: var(--gray-light);
}

.text-teal {
  color: var(--electric-teal);
}

.text-lime {
  color: var(--lime-accent);
}

.text-white {
  color: var(--white);
}

/* ---------- Layout Utilities ---------- */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-md);
}

.container-narrow {
  max-width: 800px;
}

.section {
  padding: var(--space-3xl) 0;
}

.section-sm {
  padding: var(--space-2xl) 0;
}

/* Flexbox */
.flex {
  display: flex;
}

.flex-col {
  flex-direction: column;
}

.items-center {
  align-items: center;
}

.justify-center {
  justify-content: center;
}

.justify-between {
  justify-content: space-between;
}

.gap-sm {
  gap: var(--space-sm);
}

.gap-md {
  gap: var(--space-md);
}

.gap-lg {
  gap: var(--space-lg);
}

.gap-xl {
  gap: var(--space-xl);
}

/* Grid */
.grid {
  display: grid;
  gap: var(--space-lg);
}

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

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

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

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

@media (max-width: 768px) {
  .grid-2, .grid-3, .grid-4 {
    grid-template-columns: 1fr;
  }
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-xs);
  padding: 0.875rem 1.75rem;
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 600;
  border: none;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-base);
  text-decoration: none;
}

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

.btn-primary:hover {
  background: var(--teal-dark);
  color: var(--white);
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.btn-secondary {
  background: transparent;
  color: var(--electric-teal);
  border: 2px solid var(--electric-teal);
}

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

.btn-white {
  background: var(--white);
  color: var(--midnight-blue);
}

.btn-white:hover {
  background: var(--cloud-white);
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.btn-ghost {
  background: transparent;
  color: var(--white);
  border: 2px solid rgba(255, 255, 255, 0.3);
}

.btn-ghost:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: var(--white);
  color: var(--white);
}

.btn-lg {
  padding: 1rem 2.25rem;
  font-size: 1.125rem;
}

.btn-sm {
  padding: 0.625rem 1.25rem;
  font-size: 0.875rem;
}

/* ---------- Navigation ---------- */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: var(--space-sm) 0;
  background: rgba(27, 42, 65, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  transition: all var(--transition-base);
}

.navbar.scrolled {
  padding: 0.75rem 0;
  background: rgba(27, 42, 65, 0.98);
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-md);
}

.nav-logo {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--white);
  letter-spacing: -0.02em;
}

.nav-logo span {
  color: var(--electric-teal);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: var(--space-lg);
}

.nav-link {
  font-family: var(--font-display);
  font-size: 0.9375rem;
  font-weight: 500;
  color: rgba(255, 255, 255, 0.8);
  transition: color var(--transition-fast);
  position: relative;
}

.nav-link:hover,
.nav-link.active {
  color: var(--white);
}

.nav-link.active::after {
  content: '';
  position: absolute;
  bottom: -6px;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--electric-teal);
  border-radius: 1px;
}

.nav-cta {
  margin-left: var(--space-sm);
}

/* Mobile Nav Toggle */
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 5px;
}

.nav-toggle span {
  width: 24px;
  height: 2px;
  background: var(--white);
  border-radius: 2px;
  transition: all var(--transition-fast);
}

@media (max-width: 768px) {
  .nav-toggle {
    display: flex;
  }
  
  .nav-links {
    position: fixed;
    top: 60px;
    left: 0;
    right: 0;
    bottom: 0;
    flex-direction: column;
    justify-content: flex-start;
    padding: var(--space-xl) var(--space-md);
    background: var(--midnight-blue);
    gap: var(--space-md);
    transform: translateX(100%);
    transition: transform var(--transition-base);
  }
  
  .nav-links.open {
    transform: translateX(0);
  }
  
  .nav-link {
    font-size: 1.25rem;
  }
  
  .nav-cta {
    margin-left: 0;
    margin-top: var(--space-md);
  }
}

/* ---------- Hero Section ---------- */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  background: var(--midnight-blue);
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: 
    radial-gradient(ellipse at 20% 50%, rgba(26, 188, 156, 0.15) 0%, transparent 50%),
    radial-gradient(ellipse at 80% 80%, rgba(163, 212, 0, 0.1) 0%, transparent 40%),
    radial-gradient(ellipse at 60% 20%, rgba(26, 188, 156, 0.08) 0%, transparent 30%);
  pointer-events: none;
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 800px;
}

.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  padding: 0.5rem 1rem;
  margin-bottom: var(--space-md);
  font-family: var(--font-display);
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--electric-teal);
  background: rgba(26, 188, 156, 0.1);
  border: 1px solid rgba(26, 188, 156, 0.2);
  border-radius: var(--radius-xl);
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.hero h1 {
  color: var(--white);
  margin-bottom: var(--space-md);
}

.hero h1 .highlight {
  color: var(--electric-teal);
}

.hero-description {
  font-size: 1.25rem;
  color: rgba(255, 255, 255, 0.75);
  margin-bottom: var(--space-xl);
  max-width: 600px;
}

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

/* Floating shapes decoration */
.hero-shapes {
  position: absolute;
  top: 0;
  right: 0;
  bottom: 0;
  width: 50%;
  pointer-events: none;
  opacity: 0.6;
}

.shape {
  position: absolute;
  border-radius: 50%;
  animation: float 6s ease-in-out infinite;
}

.shape-1 {
  width: 300px;
  height: 300px;
  top: 20%;
  right: 10%;
  background: linear-gradient(135deg, rgba(26, 188, 156, 0.2), transparent);
  animation-delay: 0s;
}

.shape-2 {
  width: 200px;
  height: 200px;
  top: 60%;
  right: 25%;
  background: linear-gradient(135deg, rgba(163, 212, 0, 0.15), transparent);
  animation-delay: -2s;
}

.shape-3 {
  width: 150px;
  height: 150px;
  top: 30%;
  right: 35%;
  background: linear-gradient(135deg, rgba(26, 188, 156, 0.1), transparent);
  animation-delay: -4s;
}

@keyframes float {
  0%, 100% {
    transform: translateY(0) rotate(0deg);
  }
  50% {
    transform: translateY(-20px) rotate(5deg);
  }
}

@media (max-width: 768px) {
  .hero {
    min-height: auto;
    padding: calc(80px + var(--space-2xl)) 0 var(--space-2xl);
  }
  
  .hero-shapes {
    display: none;
  }
}

/* ---------- Cards ---------- */
.card {
  background: var(--white);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  box-shadow: var(--shadow-sm);
  border: 1px solid rgba(0, 0, 0, 0.05);
  transition: all var(--transition-base);
}

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

.card-icon {
  width: 56px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(26, 188, 156, 0.1);
  border-radius: var(--radius-md);
  margin-bottom: var(--space-md);
  color: var(--electric-teal);
}

.card-icon svg {
  width: 28px;
  height: 28px;
}

.card h3 {
  margin-bottom: var(--space-xs);
}

.card p {
  color: var(--gray-light);
  margin-bottom: 0;
}

/* Feature Card Variant */
.card-feature {
  text-align: center;
  padding: var(--space-xl);
}

.card-feature .card-icon {
  margin: 0 auto var(--space-md);
}

/* Dark Card Variant */
.card-dark {
  background: var(--midnight-blue);
  border-color: rgba(255, 255, 255, 0.1);
}

.card-dark h3,
.card-dark h4 {
  color: var(--white);
}

.card-dark p {
  color: rgba(255, 255, 255, 0.7);
}

/* ---------- Section Styles ---------- */
.section-header {
  text-align: center;
  max-width: 700px;
  margin: 0 auto var(--space-2xl);
}

.section-header .eyebrow {
  display: inline-block;
  font-family: var(--font-display);
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--electric-teal);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: var(--space-sm);
}

.section-header h2 {
  margin-bottom: var(--space-md);
}

.section-header p {
  font-size: 1.125rem;
  color: var(--gray-light);
}

/* Dark Section */
.section-dark {
  background: var(--midnight-blue);
  color: var(--white);
}

.section-dark h2,
.section-dark h3 {
  color: var(--white);
}

.section-dark p {
  color: rgba(255, 255, 255, 0.75);
}

.section-dark .eyebrow {
  color: var(--lime-accent);
}

/* Gradient Section */
.section-gradient {
  background: linear-gradient(180deg, var(--cloud-white) 0%, var(--white) 100%);
}

/* ---------- Two-Column Layout ---------- */
.two-col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-2xl);
  align-items: center;
}

.two-col-reverse {
  direction: rtl;
}

.two-col-reverse > * {
  direction: ltr;
}

@media (max-width: 768px) {
  .two-col,
  .two-col-reverse {
    grid-template-columns: 1fr;
    direction: ltr;
  }
}

/* ---------- Stats Section ---------- */
.stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-lg);
  text-align: center;
}

.stat-item h3 {
  font-size: 3rem;
  color: var(--electric-teal);
  margin-bottom: var(--space-xs);
}

.stat-item p {
  font-size: 0.9375rem;
  color: var(--gray-light);
  margin: 0;
}

@media (max-width: 768px) {
  .stats {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* ---------- CTA Section ---------- */
.cta-section {
  position: relative;
  padding: var(--space-3xl) 0;
  background: var(--midnight-blue);
  overflow: hidden;
}

.cta-section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: 
    radial-gradient(ellipse at 30% 50%, rgba(26, 188, 156, 0.2) 0%, transparent 50%),
    radial-gradient(ellipse at 70% 80%, rgba(163, 212, 0, 0.1) 0%, transparent 40%);
  pointer-events: none;
}

.cta-content {
  position: relative;
  text-align: center;
  max-width: 700px;
  margin: 0 auto;
}

.cta-content h2 {
  color: var(--white);
  margin-bottom: var(--space-md);
}

.cta-content p {
  font-size: 1.125rem;
  color: rgba(255, 255, 255, 0.75);
  margin-bottom: var(--space-xl);
}

/* ---------- Footer ---------- */
.footer {
  background: var(--black);
  padding: var(--space-2xl) 0 var(--space-lg);
  color: rgba(255, 255, 255, 0.7);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: var(--space-xl);
  margin-bottom: var(--space-2xl);
}

.footer-brand p {
  margin-top: var(--space-sm);
  max-width: 300px;
}

.footer h4 {
  color: var(--white);
  font-size: 1rem;
  margin-bottom: var(--space-md);
}

.footer-links a {
  display: block;
  color: rgba(255, 255, 255, 0.6);
  padding: 0.375rem 0;
  transition: color var(--transition-fast);
}

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

.footer-bottom {
  padding-top: var(--space-lg);
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-sm);
}

.footer-bottom p {
  margin: 0;
  font-size: 0.875rem;
}

.footer-social {
  display: flex;
  gap: var(--space-sm);
}

.footer-social a {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-md);
  color: var(--white);
  transition: all var(--transition-fast);
}

.footer-social a:hover {
  background: var(--electric-teal);
}

@media (max-width: 768px) {
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
  
  .footer-brand {
    grid-column: span 2;
  }
  
  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }
}

/* ---------- Form Styles ---------- */
.form-group {
  margin-bottom: var(--space-md);
}

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

.form-input,
.form-textarea,
.form-select {
  width: 100%;
  padding: 0.875rem 1rem;
  font-family: var(--font-body);
  font-size: 1rem;
  color: var(--graphite-gray);
  background: var(--white);
  border: 2px solid rgba(0, 0, 0, 0.1);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
}

.form-input:focus,
.form-textarea:focus,
.form-select:focus {
  outline: none;
  border-color: var(--electric-teal);
  box-shadow: 0 0 0 3px rgba(26, 188, 156, 0.1);
}

.form-textarea {
  min-height: 150px;
  resize: vertical;
}

/* ---------- Page Header ---------- */
.page-header {
  padding: calc(80px + var(--space-2xl)) 0 var(--space-2xl);
  background: var(--midnight-blue);
  text-align: center;
}

.page-header h1 {
  color: var(--white);
  margin-bottom: var(--space-sm);
}

.page-header p {
  font-size: 1.25rem;
  color: rgba(255, 255, 255, 0.7);
  max-width: 600px;
  margin: 0 auto;
}

/* ---------- Utilities ---------- */
.mt-sm { margin-top: var(--space-sm); }
.mt-md { margin-top: var(--space-md); }
.mt-lg { margin-top: var(--space-lg); }
.mt-xl { margin-top: var(--space-xl); }

.mb-sm { margin-bottom: var(--space-sm); }
.mb-md { margin-bottom: var(--space-md); }
.mb-lg { margin-bottom: var(--space-lg); }
.mb-xl { margin-bottom: var(--space-xl); }

.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

/* ---------- Animations ---------- */
.fade-in {
  animation: fadeIn 0.6s ease forwards;
}

.fade-in-up {
  animation: fadeInUp 0.6s ease forwards;
}

.fade-in-delay-1 { animation-delay: 0.1s; }
.fade-in-delay-2 { animation-delay: 0.2s; }
.fade-in-delay-3 { animation-delay: 0.3s; }

@keyframes fadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

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

/* Hidden state for animations */
.animate-on-scroll {
  opacity: 0;
  transform: translateY(20px);
  transition: all 0.6s ease;
}

.animate-on-scroll.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ---------- Responsive Adjustments ---------- */
@media (max-width: 480px) {
  :root {
    --space-2xl: 3rem;
    --space-3xl: 4rem;
  }
  
  .btn {
    width: 100%;
  }
  
  .hero-buttons {
    flex-direction: column;
  }
}