/* 
 * Helico PTIC Recycling - Modern Responsive CSS
 * Brand Colors, Micro-Animations & Scroll Reveal Architecture
 */

:root {
  --primary-green: #168A45;
  --dark-green: #0B5D2A;
  --dark-bg: #17211B;
  --light-green: #EAF7EF;
  --white: #FFFFFF;
  --light-gray: #F6F8F7;
  --border-color: #E2E8E4;
  --text-dark: #17211B;
  --text-gray: #5F6862;
  --focus-ring: rgba(22, 138, 69, 0.25);
  --shadow-sm: 0 2px 8px rgba(23, 33, 27, 0.05);
  --shadow-md: 0 8px 24px rgba(23, 33, 27, 0.08);
  --shadow-lg: 0 16px 36px rgba(23, 33, 27, 0.12);
  --shadow-glow: 0 10px 30px rgba(22, 138, 69, 0.15);
  --transition-fast: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  --transition-smooth: all 0.5s cubic-bezier(0.16, 1, 0.3, 1);
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
}

body {
  font-family: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  color: var(--text-dark);
  background-color: var(--white);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

/* Typography Enhancements */
h1, h2, h3, h4, h5, h6 {
  color: var(--dark-bg);
  font-weight: 700;
  letter-spacing: -0.02em;
}

.text-primary-green {
  color: var(--primary-green) !important;
}

.bg-primary-green {
  background-color: var(--primary-green) !important;
}

.bg-dark-green {
  background-color: var(--dark-green) !important;
}

.bg-light-green {
  background-color: var(--light-green) !important;
}

.bg-dark-bg {
  background-color: var(--dark-bg) !important;
}

.bg-light-gray {
  background-color: var(--light-gray) !important;
}

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

/* Scroll Reveal Animations */
.reveal-on-scroll {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.7s ease, transform 0.7s cubic-bezier(0.16, 1, 0.3, 1);
  will-change: opacity, transform;
}

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

/* Stagger Delay Utility Classes */
.delay-100 { transition-delay: 0.1s; }
.delay-200 { transition-delay: 0.2s; }
.delay-300 { transition-delay: 0.3s; }
.delay-400 { transition-delay: 0.4s; }

/* Gentle Float Animation */
@keyframes floatAnimation {
  0% { transform: translateY(0px); }
  50% { transform: translateY(-8px); }
  100% { transform: translateY(0px); }
}

.animate-float {
  animation: floatAnimation 4s ease-in-out infinite;
}

/* Header & Navigation */
.navbar-custom {
  background-color: var(--white);
  box-shadow: var(--shadow-sm);
  padding: 1rem 0;
  transition: var(--transition-fast);
}

.navbar-custom .navbar-brand {
  font-weight: 800;
  font-size: 1.35rem;
  color: var(--dark-bg);
  display: flex;
  align-items: center;
  gap: 0.6rem;
  text-decoration: none;
}

.navbar-custom .brand-icon {
  width: 40px;
  height: 40px;
  background-color: var(--light-green);
  color: var(--primary-green);
  border-radius: var(--radius-sm);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  transition: var(--transition-fast);
}

.navbar-custom .navbar-brand:hover .brand-icon {
  background-color: var(--primary-green);
  color: var(--white);
  transform: rotate(180deg);
}

.navbar-custom .nav-link {
  color: var(--text-dark);
  font-weight: 600;
  padding: 0.5rem 1rem !important;
  transition: var(--transition-fast);
  border-radius: var(--radius-sm);
}

.navbar-custom .nav-link:hover,
.navbar-custom .nav-link.active {
  color: var(--primary-green);
  background-color: var(--light-green);
}

/* Primary CTA Buttons with Shimmer Hover Animation */
.btn-cta-primary {
  background-color: var(--primary-green);
  color: var(--white) !important;
  font-weight: 700;
  padding: 0.75rem 1.75rem;
  border-radius: 50px;
  border: 2px solid var(--primary-green);
  box-shadow: 0 4px 14px rgba(22, 138, 69, 0.3);
  transition: var(--transition-fast);
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  position: relative;
  overflow: hidden;
}

.btn-cta-primary::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.25), transparent);
  transition: 0.5s;
}

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

.btn-cta-primary:hover {
  background-color: var(--dark-green);
  border-color: var(--dark-green);
  box-shadow: 0 6px 20px rgba(11, 93, 42, 0.4);
  transform: translateY(-2px);
}

.btn-cta-secondary {
  background-color: transparent;
  color: var(--dark-bg) !important;
  font-weight: 700;
  padding: 0.75rem 1.75rem;
  border-radius: 50px;
  border: 2px solid var(--border-color);
  transition: var(--transition-fast);
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
}

.btn-cta-secondary:hover {
  background-color: var(--light-gray);
  border-color: var(--primary-green);
  color: var(--primary-green) !important;
  transform: translateY(-2px);
}

/* Hero Section */
.hero-section {
  padding: 5rem 0 4.5rem;
  background: linear-gradient(180deg, var(--light-green) 0%, var(--white) 100%);
  position: relative;
  overflow: hidden;
}

.hero-title {
  font-size: 3.25rem;
  line-height: 1.15;
  margin-bottom: 1.25rem;
}

.hero-subtitle {
  font-size: 1.15rem;
  color: var(--text-gray);
  margin-bottom: 2rem;
  max-width: 580px;
}

.hero-img-container {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  transition: var(--transition-fast);
}

.hero-img-container:hover {
  box-shadow: var(--shadow-glow);
  transform: scale(1.015);
}

.hero-img-container img {
  width: 100%;
  height: auto;
  display: block;
  object-fit: cover;
}

/* Floating Glassmorphism Badge */
.hero-glass-badge {
  position: absolute;
  bottom: 20px;
  left: 20px;
  background: rgba(23, 33, 27, 0.88);
  backdrop-filter: blur(10px);
  color: #fff;
  padding: 12px 20px;
  border-radius: 12px;
  border: 1px solid rgba(255, 255, 255, 0.2);
  display: flex;
  align-items: center;
  gap: 12px;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.2);
  max-width: 280px;
}

.hero-glass-badge i {
  font-size: 1.8rem;
  color: #2ECC71;
}

/* Feature Cards & Service Cards */
.custom-card {
  background: var(--white);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 2rem 1.75rem;
  height: 100%;
  transition: var(--transition-fast);
  box-shadow: var(--shadow-sm);
  position: relative;
}

.custom-card:hover {
  transform: translateY(-6px);
  border-color: var(--primary-green);
  box-shadow: var(--shadow-glow);
}

.icon-box {
  width: 56px;
  height: 56px;
  border-radius: var(--radius-md);
  background-color: var(--light-green);
  color: var(--primary-green);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.6rem;
  margin-bottom: 1.25rem;
  transition: var(--transition-fast);
}

.custom-card:hover .icon-box {
  background-color: var(--primary-green);
  color: var(--white);
  transform: scale(1.1) rotate(6deg);
}

/* Step Cards & Timeline for How It Works */
.timeline-wrapper {
  position: relative;
}

.step-card {
  background: var(--white);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 2.25rem 1.75rem;
  position: relative;
  height: 100%;
  box-shadow: var(--shadow-sm);
  transition: var(--transition-fast);
  z-index: 2;
}

.step-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-glow);
  border-color: var(--primary-green);
}

.step-number {
  font-size: 1.8rem;
  font-weight: 800;
  color: var(--primary-green);
  background-color: var(--light-green);
  width: 56px;
  height: 56px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.25rem;
  transition: var(--transition-fast);
  border: 2px solid var(--primary-green);
}

.step-card:hover .step-number {
  background-color: var(--primary-green);
  color: var(--white);
  transform: scale(1.1);
}

/* Interactive Quote Estimator Widget */
.estimator-card {
  background: linear-gradient(145deg, #ffffff 0%, #EAF7EF 100%);
  border: 2px solid var(--primary-green);
  border-radius: var(--radius-lg);
  padding: 2.5rem;
  box-shadow: var(--shadow-lg);
  transition: var(--transition-fast);
}

.estimator-card:hover {
  box-shadow: var(--shadow-glow);
}

.estimator-output {
  background-color: var(--dark-bg);
  color: var(--white);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  text-align: center;
  transition: var(--transition-fast);
}

.estimator-output .val-range {
  font-size: 2.2rem;
  font-weight: 800;
  color: #2ECC71;
  transition: var(--transition-fast);
}

/* Accordion Custom Styling */
.accordion-custom .accordion-item {
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md) !important;
  margin-bottom: 1rem;
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: var(--transition-fast);
}

.accordion-custom .accordion-item:hover {
  border-color: var(--primary-green);
}

.accordion-custom .accordion-button {
  font-weight: 700;
  color: var(--dark-bg);
  background-color: var(--white);
  padding: 1.25rem 1.5rem;
  font-size: 1.05rem;
  transition: var(--transition-fast);
}

.accordion-custom .accordion-button:not(.collapsed) {
  color: var(--primary-green);
  background-color: var(--light-green);
  box-shadow: none;
}

.accordion-custom .accordion-button:focus {
  box-shadow: none;
  border-color: var(--primary-green);
}

/* Section Containers */
.section-padding {
  padding: 5rem 0;
}

.section-title {
  font-size: 2.35rem;
  margin-bottom: 0.75rem;
}

.section-lead {
  font-size: 1.15rem;
  color: var(--text-gray);
  max-width: 650px;
  margin: 0 auto 3rem auto;
}

/* High Conversion Enquiry Form Component */
.enquiry-card {
  background-color: var(--white);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 2.5rem;
  box-shadow: var(--shadow-lg);
  transition: var(--transition-fast);
}

.form-label {
  font-weight: 600;
  color: var(--dark-bg);
  font-size: 0.95rem;
  margin-bottom: 0.4rem;
}

.form-control, .form-select {
  padding: 0.75rem 1rem;
  border-radius: var(--radius-sm);
  border: 1.5px solid var(--border-color);
  font-size: 0.95rem;
  transition: var(--transition-fast);
  color: var(--text-dark);
}

.form-control:focus, .form-select:focus {
  border-color: var(--primary-green);
  box-shadow: 0 0 0 0.25rem var(--focus-ring);
  outline: none;
}

.privacy-note {
  font-size: 0.85rem;
  color: var(--text-gray);
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

/* Upload Preview */
.image-preview-container {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
  margin-top: 0.75rem;
}

.preview-thumb {
  width: 70px;
  height: 70px;
  object-fit: cover;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-color);
  animation: fadeIn 0.3s ease-in-out;
}

@keyframes fadeIn {
  from { opacity: 0; transform: scale(0.9); }
  to { opacity: 1; transform: scale(1); }
}

/* Floating WhatsApp Pulse Animation */
@keyframes whatsappPulse {
  0% { box-shadow: 0 0 0 0 rgba(37, 211, 102, 0.6); }
  70% { box-shadow: 0 0 0 16px rgba(37, 211, 102, 0); }
  100% { box-shadow: 0 0 0 0 rgba(37, 211, 102, 0); }
}

.whatsapp-float {
  position: fixed;
  bottom: 25px;
  right: 25px;
  width: 60px;
  height: 60px;
  background-color: #25D366;
  color: #fff !important;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 32px;
  box-shadow: 0 4px 16px rgba(37, 211, 102, 0.4);
  z-index: 999;
  transition: var(--transition-fast);
  text-decoration: none;
  animation: whatsappPulse 2.5s infinite;
}

.whatsapp-float:hover {
  transform: scale(1.12) rotate(10deg);
  color: #fff !important;
}

/* Mobile Sticky Action Bar */
.mobile-sticky-bar {
  display: none;
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background-color: var(--white);
  box-shadow: 0 -4px 16px rgba(0, 0, 0, 0.1);
  padding: 10px 15px;
  z-index: 998;
}

@media (max-width: 767.98px) {
  .mobile-sticky-bar {
    display: flex;
    gap: 10px;
  }
  .whatsapp-float {
    bottom: 75px;
    right: 15px;
    width: 52px;
    height: 52px;
    font-size: 26px;
  }
  .hero-glass-badge {
    position: relative;
    bottom: auto;
    left: auto;
    max-width: 100%;
    margin-top: 15px;
  }
}

/* Footer Styling */
.site-footer {
  background-color: var(--dark-bg);
  color: #C0C8C3;
  padding: 4.5rem 0 2rem;
}

.site-footer h5 {
  color: var(--white);
  font-size: 1.1rem;
  margin-bottom: 1.25rem;
}

.site-footer a {
  color: #C0C8C3;
  text-decoration: none;
  transition: var(--transition-fast);
}

.site-footer a:hover {
  color: var(--white);
  padding-left: 3px;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  margin-top: 3.5rem;
  padding-top: 1.5rem;
  font-size: 0.9rem;
}

/* Responsive Overrides */
@media (max-width: 991.98px) {
  .hero-title {
    font-size: 2.25rem;
  }
  .hero-section {
    padding: 3.5rem 0 2.5rem;
  }
  .enquiry-card {
    padding: 1.75rem;
  }
  .navbar-custom .btn-cta-primary {
    width: 100%;
    margin-top: 1rem;
  }
}

@media (max-width: 575.98px) {
  .hero-title {
    font-size: 1.85rem;
  }
  .section-title {
    font-size: 1.75rem;
  }
  .btn-cta-primary, .btn-cta-secondary {
    width: 100%;
  }
}