/* OptiScript Website Styles */
/* Fonts loaded via <link> tags in HTML for performance */

:root {
  /* Brand Colors */
  --primary-color: #4ECDC4;
  --alt-brand-color: #2E86AB;
  --heading-color: #1B2951;
  --text-color: #4A5568;
  --extra-dark: #1A202C;
  
  /* UI Colors */
  --secondary-bg: #E2E8F0;
  --border-color: #CBD5E0;
  --subtle-bg: #F7FAFC;
  
  /* Status Colors */
  --success-color: #45B7B8;
  --warning-color: #F79F1A;
  --error-color: #EA5455;
  
  /* Legacy mappings */
  --secondary-color: #1B2951;
  --light-gray: #F7FAFC;
  --medium-gray: #4A5568;
  --dark-gray: #1A202C;
  --white: #FFFFFF;
  
  /* Enhanced Shadows */
  --shadow: 0 4px 12px rgba(26, 32, 44, 0.1);
  --shadow-md: 0 8px 25px rgba(26, 32, 44, 0.12);
  --shadow-lg: 0 15px 35px rgba(26, 32, 44, 0.15);
  --shadow-xl: 0 25px 50px rgba(26, 32, 44, 0.2);
  
  /* Gradients */
  --gradient-primary: linear-gradient(135deg, #4ECDC4 0%, #2E86AB 100%);
  --gradient-subtle: linear-gradient(135deg, #F7FAFC 0%, #E2E8F0 100%);
  --gradient-hero: linear-gradient(135deg, #4ECDC4 0%, #2E86AB 50%, #1B2951 100%);
  
  --transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-fast: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: 'Inter', sans-serif;
  line-height: 1.6;
  color: var(--text-color);
  background-color: var(--white);
  scroll-behavior: smooth;
}

/* Typography */
h1 {
  font-size: 3.5rem;
  font-weight: 700;
  line-height: 1.2;
  color: var(--heading-color);
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

h2 {
  font-size: 2.5rem;
  font-weight: 600;
  line-height: 1.3;
  color: var(--heading-color);
  position: relative;
}

h3 {
  font-size: 1.75rem;
  font-weight: 600;
  line-height: 1.4;
  color: var(--heading-color);
}

h4 {
  font-size: 1.25rem;
  font-weight: 500;
  line-height: 1.5;
  color: var(--heading-color);
}

p {
  font-size: 1.1rem;
  color: var(--text-color);
  margin-bottom: 1rem;
  line-height: 1.7;
}

.text-large {
  font-size: 1.3rem;
}

.text-small {
  font-size: 0.9rem;
}

/* Layout */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 2rem;
}

.section {
  padding: 5rem 0;
}

.section-alt {
  background: var(--gradient-subtle);
  position: relative;
}

.section-alt::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(135deg, rgba(78, 205, 196, 0.03) 0%, rgba(46, 134, 171, 0.03) 100%);
  pointer-events: none;
}

/* Header */
header {
  background-color: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  box-shadow: var(--shadow);
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  transition: var(--transition);
  border-bottom: 1px solid var(--border-color);
}

nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 2rem;
  max-width: 1200px;
  margin: 0 auto;
}

.logo {
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--primary-color);
  text-decoration: none;
  display: inline-block;
  line-height: 1;
}

.nav-links {
  display: flex;
  list-style: none;
  gap: 2rem;
}

.nav-links a {
  text-decoration: none;
  color: var(--heading-color);
  font-weight: 500;
  transition: var(--transition);
  position: relative;
  padding: 0.5rem 0;
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--gradient-primary);
  transition: width 0.3s ease;
}

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

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

/* Buttons */
.btn {
  display: inline-block;
  padding: 0.75rem 1.5rem;
  font-weight: 500;
  text-decoration: none;
  border-radius: 5px;
  transition: var(--transition);
  cursor: pointer;
  border: none;
  font-size: 1rem;
}

.btn-primary {
  background: var(--gradient-primary);
  color: var(--white);
  position: relative;
  overflow: hidden;
  z-index: 1;
}

.btn-primary::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
  transition: left 0.5s;
  z-index: -1;
}

.btn-primary:hover {
  background: linear-gradient(135deg, #3DB5B0 0%, #2570A1 100%);
  transform: translateY(-3px);
  box-shadow: var(--shadow-xl);
}

.btn-primary:hover::before {
  left: 100%;
}

.btn-secondary {
  background-color: transparent;
  color: var(--primary-color);
  border: 2px solid var(--primary-color);
  position: relative;
  overflow: hidden;
  z-index: 1;
}

.btn-secondary::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 0;
  height: 100%;
  background: var(--gradient-primary);
  transition: width 0.3s ease;
  z-index: -1;
}

.btn-secondary:hover {
  color: var(--white);
  border-color: var(--primary-color);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.btn-secondary:hover::before {
  width: 100%;
}

.btn-large {
  padding: 1rem 2rem;
  font-size: 1.1rem;
}

/* Hero Section */
.hero {
  background: var(--gradient-hero);
  padding: 8rem 0 6rem 0;
  margin-top: 80px;
  overflow: hidden;
  position: relative;
  color: var(--white);
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: url('data:image/svg+xml,<svg width="60" height="60" viewBox="0 0 60 60" xmlns="http://www.w3.org/2000/svg"><g fill="none" fill-rule="evenodd"><g fill="%23ffffff" fill-opacity="0.05"><circle cx="30" cy="30" r="2"/></g></g></svg>');
  pointer-events: none;
}

.hero::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(135deg, rgba(26, 32, 44, 0.3) 0%, rgba(26, 32, 44, 0.6) 50%, rgba(26, 32, 44, 0.8) 100%);
  pointer-events: none;
}

.hero-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
  position: relative;
  z-index: 10;
}

.hero h1 {
  margin-bottom: 1.5rem;
  color: var(--white) !important;
  background: none;
  -webkit-background-clip: unset;
  -webkit-text-fill-color: unset;
  text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3), 0 4px 8px rgba(0, 0, 0, 0.2), 0 8px 16px rgba(0, 0, 0, 0.1);
  position: relative;
  z-index: 10;
}

.hero-text h1 {
  margin-bottom: 1.5rem;
  color: var(--white);
  background: none;
  -webkit-background-clip: unset;
  -webkit-text-fill-color: unset;
  text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3), 0 4px 8px rgba(0, 0, 0, 0.2), 0 8px 16px rgba(0, 0, 0, 0.1);
  position: relative;
  z-index: 10;
}

.hero p {
  font-size: 1.2rem;
  margin-bottom: 2rem;
  color: var(--white) !important;
  text-shadow: 0 1px 3px rgba(0, 0, 0, 0.4), 0 2px 6px rgba(0, 0, 0, 0.2);
  position: relative;
  z-index: 10;
  font-weight: 500;
}

.hero-text p {
  font-size: 1.2rem;
  margin-bottom: 2rem;
  color: var(--white);
  text-shadow: 0 1px 3px rgba(0, 0, 0, 0.4), 0 2px 6px rgba(0, 0, 0, 0.2);
  position: relative;
  z-index: 10;
  font-weight: 500;
}

.hero-cta {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  position: relative;
  z-index: 10;
}

.hero .btn-primary {
  background: rgba(255, 255, 255, 0.95);
  color: var(--heading-color);
  border: 2px solid rgba(255, 255, 255, 0.2);
  backdrop-filter: blur(10px);
  font-weight: 600;
}

.hero .btn-primary:hover {
  background: var(--white);
  color: var(--heading-color);
  transform: translateY(-3px);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
}

.hero .btn-secondary {
  background: rgba(255, 255, 255, 0.1);
  color: var(--white);
  border: 2px solid rgba(255, 255, 255, 0.8);
  backdrop-filter: blur(10px);
  font-weight: 600;
}

.hero .btn-secondary:hover {
  background: rgba(255, 255, 255, 0.2);
  color: var(--white);
  border-color: var(--white);
}

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

/* LED Basket Animation */
.led-basket-demo {
  width: 300px;
  height: 200px;
  background-color: #2C3E50;
  border-radius: 10px;
  position: relative;
  box-shadow: var(--shadow-lg);
  overflow: hidden;
  z-index: 10;
}

.basket-led {
  position: absolute;
  top: 20px;
  right: 20px;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  animation: ledPulse 2s infinite;
}

.basket-led.orange {
  background-color: var(--warning-color);
  box-shadow: 0 0 20px var(--warning-color);
}

.basket-led.green {
  background-color: var(--success-color);
  box-shadow: 0 0 20px var(--success-color);
  animation-delay: 2s;
}

.basket-display {
  position: absolute;
  bottom: 20px;
  left: 20px;
  right: 20px;
  background-color: #ECF0F1;
  color: var(--dark-gray);
  padding: 0.5rem;
  border-radius: 5px;
  font-size: 0.8rem;
  font-weight: 500;
}

@keyframes ledPulse {
  0%, 50% { opacity: 1; }
  25%, 75% { opacity: 0.3; }
}

/* Features Grid */
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
  margin-top: 3rem;
}

.feature-card {
  background-color: var(--white);
  padding: 2rem;
  border-radius: 15px;
  box-shadow: var(--shadow);
  transition: var(--transition);
  text-align: center;
  position: relative;
  overflow: hidden;
  border: 1px solid var(--border-color);
}

.feature-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--gradient-primary);
  opacity: 0;
  transition: opacity 0.3s ease;
}

.feature-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-xl);
  border-color: var(--primary-color);
}

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

.feature-card:hover .feature-icon {
  transform: scale(1.1);
  box-shadow: 0 8px 25px rgba(78, 205, 196, 0.3);
}

.feature-icon {
  width: 60px;
  height: 60px;
  background: var(--gradient-primary);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 1rem auto;
  font-size: 1.5rem;
  color: var(--white);
  transition: var(--transition);
  box-shadow: 0 4px 15px rgba(78, 205, 196, 0.2);
}

/* Workflow Animation */
.workflow-container {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
  margin: 3rem 0;
}

.workflow-step {
  background-color: var(--white);
  border-radius: 15px;
  padding: 2rem;
  box-shadow: var(--shadow);
  position: relative;
  transition: var(--transition);
  border: 1px solid var(--border-color);
  overflow: hidden;
}

.workflow-step::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: var(--gradient-primary);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.3s ease;
}

.workflow-step:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
  border-color: var(--primary-color);
}

.workflow-step:hover::before {
  transform: scaleX(1);
}

.workflow-step::after {
  content: '→';
  position: absolute;
  right: -1.5rem;
  top: 50%;
  transform: translateY(-50%);
  font-size: 1.5rem;
  color: var(--primary-color);
  font-weight: 700;
}

.workflow-step:last-child::after {
  display: none;
}

.step-number {
  background: var(--gradient-primary);
  color: var(--white);
  width: 35px;
  height: 35px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 600;
  margin-bottom: 1rem;
  box-shadow: 0 4px 15px rgba(78, 205, 196, 0.3);
  transition: var(--transition);
}

.workflow-step:hover .step-number {
  transform: scale(1.1);
  box-shadow: 0 6px 20px rgba(78, 205, 196, 0.4);
}

/* ROI Calculator */
.roi-calculator {
  background: var(--gradient-subtle);
  padding: 3rem 2rem;
  border-radius: 20px;
  margin: 3rem 0;
  border: 1px solid var(--border-color);
  position: relative;
  overflow: hidden;
}

.roi-calculator::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(135deg, rgba(78, 205, 196, 0.02) 0%, rgba(46, 134, 171, 0.02) 100%);
  pointer-events: none;
}

.calculator-inputs {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 1.5rem;
  margin-bottom: 2rem;
}

.input-group {
  display: flex;
  flex-direction: column;
}

.input-group label {
  font-weight: 500;
  margin-bottom: 0.5rem;
  color: var(--heading-color);
}

.input-group input {
  padding: 0.75rem;
  border: 2px solid var(--border-color);
  border-radius: 8px;
  font-size: 1rem;
  transition: var(--transition);
  background-color: var(--white);
}

.input-group input:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px rgba(78, 205, 196, 0.1);
  transform: translateY(-1px);
}

.roi-results {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1rem;
  margin-top: 2rem;
}

.roi-metric {
  background-color: var(--white);
  padding: 1.5rem;
  border-radius: 12px;
  text-align: center;
  box-shadow: var(--shadow);
  border: 1px solid var(--border-color);
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.roi-metric::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: var(--gradient-primary);
}

.roi-metric:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
}

.roi-value {
  font-size: 2rem;
  font-weight: 700;
  color: var(--primary-color);
  margin-bottom: 0.5rem;
}

.roi-label {
  font-size: 0.9rem;
  color: var(--medium-gray);
  font-weight: 500;
}

/* Forms */
.form-container {
  max-width: 600px;
  margin: 0 auto;
}

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

.form-group label {
  display: block;
  margin-bottom: 0.5rem;
  font-weight: 500;
  color: var(--heading-color);
}

.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: 0.75rem;
  border: 2px solid #E0E6ED;
  border-radius: 5px;
  font-size: 1rem;
  transition: var(--transition);
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--primary-color);
}

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

/* Footer */
footer {
  background: linear-gradient(135deg, var(--extra-dark) 0%, var(--heading-color) 100%);
  color: var(--white);
  padding: 3rem 0 1rem 0;
  position: relative;
}

footer::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: var(--gradient-primary);
}

.footer-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 2rem;
  margin-bottom: 2rem;
}

.footer-section h4,
.footer-heading {
  color: var(--white);
  margin-bottom: 1rem;
  font-size: 1rem;
  font-weight: 700;
}

.footer-section a {
  color: #B0BEC5;
  text-decoration: none;
  transition: var(--transition);
  display: block;
  margin-bottom: 0.5rem;
}

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

.footer-bottom {
  text-align: center;
  padding-top: 2rem;
  border-top: 1px solid #37474F;
  color: #B0BEC5;
}

/* Mobile Menu */
.mobile-menu-toggle {
  display: none;
  flex-direction: column;
  cursor: pointer;
  padding: 0.5rem;
}

.hamburger {
  width: 25px;
  height: 3px;
  background-color: var(--heading-color);
  margin: 3px 0;
  transition: var(--transition);
}

/* Responsive Design */
@media (max-width: 768px) {
  .container {
    padding: 0 1rem;
  }
  
  h1 {
    font-size: 2.5rem;
  }
  
  h2 {
    font-size: 2rem;
  }
  
  .hero {
    padding: 6rem 0 4rem 0;
  }
  
  .hero-content {
    grid-template-columns: 1fr;
    gap: 2rem;
    text-align: center;
  }
  
  .nav-links {
    display: none;
  }
  
  .mobile-menu-toggle {
    display: flex;
  }
  
  .workflow-container {
    grid-template-columns: 1fr;
  }
  
  .workflow-step::after {
    content: '↓';
    right: 50%;
    top: auto;
    bottom: -1.5rem;
    transform: translateX(50%);
  }
  
  .calculator-inputs {
    grid-template-columns: 1fr;
  }
  
  .hero-cta {
    justify-content: center;
  }
}

@media (max-width: 480px) {
  h1 {
    font-size: 2rem;
  }
  
  .section {
    padding: 3rem 0;
  }
  
  .btn {
    padding: 0.75rem 1.25rem;
    font-size: 0.9rem;
  }
  
  .feature-card {
    padding: 1.5rem;
  }
}

/* Animations */
.fade-in {
  opacity: 0;
  transform: translateY(30px);
  transition: all 0.6s ease;
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

.slide-in-left {
  opacity: 0;
  transform: translateX(-50px);
  transition: all 0.6s ease;
}

.slide-in-left.visible {
  opacity: 1;
  transform: translateX(0);
}

.slide-in-right {
  opacity: 0;
  transform: translateX(50px);
  transition: all 0.6s ease;
}

.slide-in-right.visible {
  opacity: 1;
  transform: translateX(0);
}

/* LED Status Indicators */
.led-indicator {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  display: inline-block;
  margin-right: 0.5rem;
  animation: ledPulse 1.5s infinite;
}

.led-orange {
  background-color: var(--warning-color);
  box-shadow: 0 0 10px var(--warning-color);
}

.led-green {
  background-color: var(--success-color);
  box-shadow: 0 0 10px var(--success-color);
}

.led-red {
  background-color: var(--error-color);
  box-shadow: 0 0 10px var(--error-color);
  animation: ledFlash 0.5s infinite;
}

@keyframes ledFlash {
  0%, 50% { opacity: 1; }
  25%, 75% { opacity: 0.2; }
}

/* Logo Styles */
.logo-image {
  height: 40px;
  width: 160px;
  transition: var(--transition);
  object-fit: contain;
  object-position: center;
  display: block;
}

.logo:hover .logo-image {
  transform: scale(1.05);
}

.footer-logo {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
}

.footer-logo-image {
  height: 50px;
  width: auto;
  margin-bottom: 0.5rem;
  filter: brightness(0) invert(1);
  opacity: 0.8;
  transition: var(--transition);
  object-fit: contain;
  object-position: center;
  max-width: 160px;
}

.footer-logo-image:hover {
  opacity: 1;
  transform: scale(1.05);
}

.footer-logo-title {
  margin-top: 0.5rem;
}

/* Hero Logo Watermark */
.hero-logo-backdrop {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  z-index: 0;
  opacity: 0.1;
  pointer-events: none;
}

.hero-logo-watermark {
  width: 250px;
  height: auto;
  filter: grayscale(100%);
  object-fit: contain;
  object-position: center;
}

/* Enhanced mobile styles */
@media (max-width: 768px) {
  .logo-image {
    height: 32px;
    width: 128px;
  }
  
  .footer-logo-image {
    height: 40px;
    max-width: 120px;
  }
  
  .hero-logo-watermark {
    width: 180px;
  }
  
  .hero {
    padding: 6rem 0 4rem 0;
  }
  
  .hero-text h1 {
    font-size: 2.8rem;
    text-align: center;
  }
  
  .hero-text p {
    text-align: center;
  }
  
  .feature-card {
    padding: 1.5rem;
  }
  
  .workflow-step {
    padding: 1.5rem;
  }
  
  .roi-calculator {
    padding: 2rem 1rem;
  }
}

@media (max-width: 480px) {
  .logo-image {
    height: 28px;
    width: 112px;
  }
  
  .footer-logo-image {
    height: 35px;
    max-width: 100px;
  }
  
  .hero-logo-watermark {
    width: 130px;
  }
  
  .hero-text h1 {
    font-size: 2.2rem;
  }
  
  .hero-text p {
    font-size: 1.1rem;
  }
  
  .btn-large {
    padding: 0.75rem 1.5rem;
    font-size: 1rem;
  }
}

/* Additional visual enhancements */
.text-center {
  text-align: center;
}

/* Smooth scroll for webkit */
html {
  scroll-behavior: smooth;
}

/* Custom scrollbar */
::-webkit-scrollbar {
  width: 8px;
}

::-webkit-scrollbar-track {
  background: var(--secondary-bg);
}

::-webkit-scrollbar-thumb {
  background: var(--gradient-primary);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: linear-gradient(135deg, #3DB5B0 0%, #2570A1 100%);
}

/* Enhanced focus styles for accessibility */
*:focus-visible {
  outline: 2px solid var(--primary-color);
  outline-offset: 2px;
}

/* Loading animation for dynamic elements */
@keyframes shimmer {
  0% { background-position: -200px 0; }
  100% { background-position: calc(200px + 100%) 0; }
}

.loading {
  background: linear-gradient(90deg, var(--secondary-bg) 0px, rgba(78, 205, 196, 0.1) 40px, var(--secondary-bg) 80px);
  background-size: 400px;
  animation: shimmer 1.5s ease-in-out infinite;
}