/* 
 * Keka HRMS & Payroll Suite - Branding Website Landing Page Styles
 * Premium Theme: Slate-Dark base with vibrant Indigo & Purple glowing gradients.
 */

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

:root {
  --font-sans: 'Inter', sans-serif;
  --font-heading: 'Outfit', sans-serif;
  
  /* Color Palette - HSL Tailored Colors */
  --bg-base: hsl(222, 47%, 7%);       /* #0b0f19 - Deep dark slate */
  --bg-surface: rgb(17 24 39 / 60%);  /* Dark gray with glass transparency */
  --border-color: rgba(255, 255, 255, 0.08);
  
  --text-primary: hsl(0, 0%, 100%);
  --text-secondary: hsl(215, 20%, 75%);
  --text-muted: hsl(215, 16%, 55%);
  
  --primary: hsl(142, 70%, 45%);      /* Vibrant Indigo */
  --primary-glow: hsla(142, 70%, 45%, 0.35);
  --secondary: hsl(221, 83%, 53%);    /* Bright Purple */
  --secondary-glow: hsla(221, 83%, 53%, 0.35);
  
  --success: hsl(142, 70%, 45%);
  --warning: hsl(38, 92%, 50%);
  --danger: hsl(350, 89%, 60%);
  --info: hsl(199, 89%, 48%);
  
  --radius-sm: 8px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --radius-round: 9999px;
  
  --transition-fast: 0.15s cubic-bezier(0.16, 1, 0.3, 1);
  --transition-normal: 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  --transition-slow: 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-sans);
  background-color: var(--bg-base);
  color: var(--text-secondary);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  position: relative;
}

/* Background Glowing Blurs */
body::before {
  content: "";
  position: absolute;
  top: -10%;
  left: 20%;
  width: 50vw;
  height: 50vw;
  border-radius: 50%;
  background: radial-gradient(circle, var(--primary-glow) 0%, transparent 70%);
  filter: blur(80px);
  z-index: -1;
  pointer-events: none;
}

body::after {
  content: "";
  position: absolute;
  top: 40%;
  right: -10%;
  width: 45vw;
  height: 45vw;
  border-radius: 50%;
  background: radial-gradient(circle, var(--secondary-glow) 0%, transparent 70%);
  filter: blur(100px);
  z-index: -1;
  pointer-events: none;
}

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

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

/* Custom Scrollbar */
::-webkit-scrollbar {
  width: 10px;
}
::-webkit-scrollbar-track {
  background: var(--bg-base);
}
::-webkit-scrollbar-thumb {
  background: rgba(255, 255, 255, 0.12);
  border-radius: var(--radius-round);
  border: 2px solid var(--bg-base);
}
::-webkit-scrollbar-thumb:hover {
  background: rgba(255, 255, 255, 0.24);
}

/* Navigation Header */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding: 1.25rem 2rem;
  background: rgba(11, 15, 25, 0.8);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-color);
  display: flex;
  justify-content: space-between;
  align-items: center;
  transition: var(--transition-normal);
}

.navbar.scrolled {
  padding: 0.85rem 2rem;
  box-shadow: 0 10px 30px -10px rgba(0, 0, 0, 0.5);
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-family: var(--font-heading);
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--text-primary);
}

.nav-logo-icon {
  background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
  color: #fff;
  width: 38px;
  height: 38px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
  font-size: 1.3rem;
  font-weight: 900;
  box-shadow: 0 0 15px var(--primary-glow);
}

.nav-links {
  display: flex;
  gap: 2.25rem;
  list-style: none;
  align-items: center;
}

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

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

.nav-links .active-link {
  color: var(--text-primary);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 0.95rem;
  padding: 0.75rem 1.5rem;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
  border: none;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
  color: #fff;
  box-shadow: 0 4px 20px -2px var(--primary-glow);
  position: relative;
  overflow: hidden;
}

.btn-primary::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, var(--secondary) 0%, var(--primary) 100%);
  opacity: 0;
  transition: opacity 0.4s ease;
  z-index: 1;
}

.btn-primary:hover::before {
  opacity: 1;
}

.btn-primary > * {
  position: relative;
  z-index: 2;
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 25px -2px var(--secondary-glow);
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.05);
  color: var(--text-primary);
  border: 1px solid var(--border-color);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.1);
  transform: translateY(-2px);
}

.btn-icon {
  width: 18px;
  height: 18px;
}

/* Hero Section */
.hero-section {
  padding: 10rem 2rem 5rem;
  max-width: 1200px;
  margin: 0 auto;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  position: relative;
}

.badge-glow {
  background: rgba(16, 185, 129, 0.1);
  border: 1px solid rgba(16, 185, 129, 0.2);
  color: #a7f3d0;
  padding: 0.4rem 1.2rem;
  border-radius: var(--radius-round);
  font-size: 0.82rem;
  font-weight: 600;
  margin-bottom: 2rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  box-shadow: 0 0 15px rgba(99, 102, 241, 0.05);
}

.hero-title {
  font-family: var(--font-heading);
  font-size: 3.8rem;
  font-weight: 800;
  line-height: 1.15;
  color: var(--text-primary);
  max-width: 900px;
  margin-bottom: 1.5rem;
  letter-spacing: -0.02em;
}

.gradient-text {
  background: linear-gradient(135deg, #a7f3d0 0%, #93c5fd 50%, #e879f9 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-subtitle {
  font-size: 1.25rem;
  color: var(--text-secondary);
  max-width: 750px;
  margin-bottom: 3rem;
  font-weight: 400;
}

.hero-ctas {
  display: flex;
  gap: 1.25rem;
  margin-bottom: 5rem;
}

/* Dashboard Mockup Showcase */
.mockup-container {
  width: 100%;
  max-width: 1100px;
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 8px;
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.7), 0 0 40px rgba(16, 185, 129, 0.08);
  position: relative;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  transform: perspective(1000px) rotateX(2deg);
  transition: transform 0.5s ease;
}

.mockup-container:hover {
  transform: perspective(1000px) rotateX(0deg);
}

.mockup-header {
  height: 38px;
  display: flex;
  align-items: center;
  padding: 0 1rem;
  background: rgba(255, 255, 255, 0.03);
  border-top-left-radius: 16px;
  border-top-right-radius: 16px;
  border-bottom: 1px solid var(--border-color);
  position: relative;
}

.mockup-dots {
  display: flex;
  gap: 6px;
}

.mockup-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
}
.mockup-dot.red { background-color: var(--danger); }
.mockup-dot.yellow { background-color: var(--warning); }
.mockup-dot.green { background-color: var(--success); }

.mockup-address {
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  background: rgba(255, 255, 255, 0.04);
  padding: 4px 2rem;
  border-radius: var(--radius-sm);
  font-size: 0.72rem;
  color: var(--text-muted);
  font-family: monospace;
}

.mockup-content {
  border-bottom-left-radius: 16px;
  border-bottom-right-radius: 16px;
  overflow: hidden;
  aspect-ratio: 16/9;
  background: #0f172a;
  position: relative;
}

/* Premium Floating Cards in Mockup */
.floating-element {
  position: absolute;
  background: rgba(15, 23, 42, 0.85);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: var(--radius-md);
  padding: 1.25rem;
  box-shadow: 0 20px 40px -15px rgba(0, 0, 0, 0.8), 0 0 20px rgba(16, 185, 129, 0.06);
  z-index: 10;
  display: flex;
  flex-direction: column;
  gap: 8px;
  text-align: left;
  animation: float-slow 6s ease-in-out infinite alternate;
}

@keyframes float-slow {
  0% { transform: translateY(0px) rotate(0deg); }
  100% { transform: translateY(-10px) rotate(1deg); }
}

.floating-1 {
  top: 15%;
  left: -5%;
  width: 250px;
}

.floating-2 {
  bottom: 12%;
  right: -5%;
  width: 280px;
  animation-delay: -3s;
}

.floating-title {
  font-family: var(--font-heading);
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--text-primary);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.floating-val {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--text-primary);
}

.mockup-bg-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.95;
}

/* Features Grid Section */
.section {
  padding: 7rem 2rem;
  max-width: 1200px;
  margin: 0 auto;
}

.section-header {
  text-align: center;
  margin-bottom: 5rem;
}

.section-title {
  font-family: var(--font-heading);
  font-size: 2.8rem;
  font-weight: 800;
  color: var(--text-primary);
  margin-bottom: 1.25rem;
}

.section-subtitle {
  font-size: 1.1rem;
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 2rem;
}

.feature-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 2.5rem;
  transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  position: relative;
  overflow: hidden;
  text-align: left;
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

.feature-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: linear-gradient(90deg, var(--primary) 0%, var(--secondary) 100%);
  opacity: 0;
  transition: opacity 0.3s ease;
}

.feature-card:hover::before {
  opacity: 1;
}

.feature-card:hover {
  transform: translateY(-5px);
  border-color: rgba(99, 102, 241, 0.25);
  box-shadow: 0 15px 35px -10px rgba(0, 0, 0, 0.5), 0 0 15px rgba(99, 102, 241, 0.05);
}

.feature-icon-wrapper {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border-color);
  width: 50px;
  height: 50px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  transition: var(--transition-normal);
}

.feature-card:hover .feature-icon-wrapper {
  background: var(--primary);
  color: #fff;
  border-color: var(--primary);
  box-shadow: 0 0 15px var(--primary-glow);
}

.feature-card h3 {
  font-family: var(--font-heading);
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--text-primary);
}

.feature-card p {
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* Pricing Section */
.pricing-section {
  background: linear-gradient(180deg, transparent 0%, rgba(99, 102, 241, 0.02) 50%, transparent 100%);
}

.pricing-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 2.5rem;
  max-width: 900px;
  margin: 0 auto;
}

.pricing-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 3.5rem 2.5rem;
  text-align: center;
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 2rem;
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.pricing-card.popular {
  border-color: rgba(99, 102, 241, 0.3);
  box-shadow: 0 20px 40px -15px rgba(0, 0, 0, 0.6), 0 0 30px rgba(16, 185, 129, 0.06);
}

.pricing-card.popular::after {
  content: "RECOMMENDED";
  position: absolute;
  top: 1.5rem;
  right: 1.5rem;
  background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
  color: #fff;
  font-size: 0.68rem;
  font-weight: 800;
  padding: 4px 12px;
  border-radius: var(--radius-round);
  letter-spacing: 0.08em;
  box-shadow: 0 0 10px var(--primary-glow);
}

.pricing-card:hover {
  transform: translateY(-5px);
  border-color: rgba(168, 85, 247, 0.3);
}

.pricing-header h3 {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 0.5rem;
}

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

.pricing-price {
  font-family: var(--font-heading);
  font-size: 3.25rem;
  font-weight: 800;
  color: var(--text-primary);
  margin: 1.5rem 0;
  display: flex;
  align-items: baseline;
  justify-content: center;
  gap: 4px;
}

.pricing-price span {
  font-size: 1rem;
  font-weight: 500;
  color: var(--text-muted);
}

.pricing-features {
  list-style: none;
  text-align: left;
  display: flex;
  flex-direction: column;
  gap: 1rem;
  font-size: 0.95rem;
  margin-bottom: 1rem;
}

.pricing-features li {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  color: var(--text-secondary);
}

.pricing-features li i {
  color: var(--success);
  width: 18px;
  height: 18px;
  flex-shrink: 0;
}

.pricing-features li.disabled {
  color: var(--text-muted);
  text-decoration: line-through;
}

.pricing-features li.disabled i {
  color: var(--text-muted);
}

/* Call To Action Banner */
.cta-banner-container {
  padding: 3rem 2rem 8rem;
}

.cta-banner {
  max-width: 1100px;
  margin: 0 auto;
  background: linear-gradient(135deg, rgba(16, 185, 129, 0.08) 0%, rgba(168, 85, 247, 0.04) 100%);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 5rem 3rem;
  text-align: center;
  position: relative;
  overflow: hidden;
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

.cta-banner::before {
  content: "";
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle, rgba(16, 185, 129, 0.1) 0%, transparent 50%);
  z-index: -1;
  pointer-events: none;
}

.cta-banner h2 {
  font-family: var(--font-heading);
  font-size: 2.8rem;
  font-weight: 800;
  color: var(--text-primary);
  margin-bottom: 1rem;
}

.cta-banner p {
  font-size: 1.15rem;
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto 2.5rem;
}

/* Footer Section */
.footer {
  background: rgba(11, 15, 25, 0.95);
  border-top: 1px solid var(--border-color);
  padding: 5rem 2rem 2rem;
  text-align: left;
}

.footer-grid {
  max-width: 1200px;
  margin: 0 auto 4rem;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 3rem;
}

.footer-col {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.footer-about {
  grid-column: span 2;
}

@media (max-width: 768px) {
  .footer-about {
    grid-column: span 1;
  }
}

.footer-logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-heading);
  font-size: 1.35rem;
  font-weight: 800;
  color: var(--text-primary);
}

.footer-about p {
  font-size: 0.9rem;
  color: var(--text-muted);
  max-width: 320px;
  line-height: 1.6;
}

.footer-col h4 {
  font-family: var(--font-heading);
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text-primary);
}

.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  font-size: 0.9rem;
}

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

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

.footer-bottom {
  max-width: 1200px;
  margin: 0 auto;
  border-top: 1px solid var(--border-color);
  padding-top: 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.85rem;
  color: var(--text-muted);
}

@media (max-width: 600px) {
  .footer-bottom {
    flex-direction: column;
    gap: 1rem;
    text-align: center;
  }
}

/* Responsive adjustments */
@media (max-width: 900px) {
  .hero-title {
    font-size: 2.8rem;
  }
  .hero-subtitle {
    font-size: 1.1rem;
  }
}

@media (max-width: 600px) {
  .navbar {
    padding: 1rem;
  }
  .nav-links {
    display: none; /* simple mobile drawer could go here, keeping it compact */
  }
  .hero-section {
    padding-top: 8rem;
  }
  .hero-title {
    font-size: 2.25rem;
  }
  .hero-ctas {
    flex-direction: column;
    width: 100%;
    max-width: 320px;
  }
  .btn {
    width: 100%;
  }
  .floating-element {
    display: none; /* hide decoration on small displays */
  }
  .section-title {
    font-size: 2rem;
  }
}