/* ============================================================
   PREMIUM DESIGN SYSTEM — INVOICE NET
   ============================================================ */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&display=swap');

:root {
  --bg-color: #fafcff;
  --text-hi: #0f172a;
  --text-mid: #475569;
  --text-lo: #94a3b8;
  --accent-1: #2563eb; /* Blue */
  --accent-2: #4f46e5; /* Indigo */
  --accent-gradient: linear-gradient(135deg, var(--accent-1) 0%, var(--accent-2) 100%);
  --surface: #ffffff;
  --border: #e2e8f0;
  --radius-lg: 24px;
  --radius-md: 16px;
  --shadow-sm: 0 4px 6px -1px rgba(0, 0, 0, 0.05), 0 2px 4px -1px rgba(0, 0, 0, 0.03);
  --shadow-md: 0 10px 15px -3px rgba(0, 0, 0, 0.05), 0 4px 6px -2px rgba(0, 0, 0, 0.025);
  --shadow-lg: 0 20px 25px -5px rgba(0, 0, 0, 0.05), 0 10px 10px -5px rgba(0, 0, 0, 0.02);
  --shadow-hover: 0 25px 50px -12px rgba(37, 99, 235, 0.2);
  --transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

body {
  font-family: 'Inter', sans-serif;
  background-color: var(--bg-color);
  color: var(--text-mid);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4, h5, h6 {
  color: var(--text-hi);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.2;
}

/* Navbar */
.navbar {
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(0,0,0,0.03);
  padding: 1.2rem 0;
  transition: var(--transition);
}
.navbar.scrolled {
  padding: 0.8rem 0;
  box-shadow: var(--shadow-sm);
  background: rgba(255, 255, 255, 0.98);
}
.navbar-brand {
  font-weight: 800;
  font-size: 1.5rem;
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}
.nav-link {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text-mid) !important;
  padding: 0.5rem 1rem !important;
  border-radius: 8px;
  transition: var(--transition);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}
.nav-link:hover, .nav-link.active {
  color: var(--accent-1) !important;
  background: rgba(37, 99, 235, 0.05);
}

/* Hero Section */
.hero-section {
  position: relative;
  min-height: 90vh;
  display: flex;
  align-items: center;
  background-size: cover;
  background-position: center;
  padding-top: 80px;
}
.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to right, rgba(15, 23, 42, 0.65) 0%, rgba(15, 23, 42, 0.25) 100%);
  backdrop-filter: blur(1,3px);
  -webkit-backdrop-filter: blur(2px);
  z-index: 1;
}
.hero-inner {
  position: relative;
  z-index: 2;
  color: white;
}
.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.2);
  padding: 0.4rem 1rem;
  border-radius: 50px;
  font-size: 0.875rem;
  font-weight: 500;
  margin-bottom: 2rem;
  backdrop-filter: blur(4px);
}
.hero-eyebrow .dot {
  width: 8px; height: 8px;
  background: #38bdf8;
  border-radius: 50%;
  box-shadow: 0 0 10px rgba(56, 189, 248, 0.8);
}
.hero-title {
  font-size: clamp(2.5rem, 5vw, 4.5rem);
  font-weight: 800;
  color: #ffffff;
  margin-bottom: 1.5rem;
}
.hero-subtitle {
  font-size: 1.2rem;
  color: rgba(255, 255, 255, 0.8);
  max-width: 600px;
  font-weight: 400;
  margin-bottom: 2.5rem;
}

/* Buttons */
.btn-premium {
  background: var(--accent-gradient);
  color: white;
  font-weight: 600;
  padding: 1rem 2rem;
  border-radius: 50px;
  text-decoration: none;
  box-shadow: 0 10px 25px -5px rgba(37, 99, 235, 0.5);
  transition: var(--transition);
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  border: none;
}
.btn-premium:hover {
  transform: translateY(-3px);
  box-shadow: 0 20px 25px -5px rgba(37, 99, 235, 0.6);
  color: white;
}
.btn-premium-outline {
  background: transparent;
  color: var(--accent-1);
  font-weight: 600;
  padding: 1rem 2rem;
  border-radius: 50px;
  text-decoration: none;
  border: 2px solid var(--accent-1);
  transition: var(--transition);
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}
.hero-section .btn-premium-outline {
  color: white;
  border-color: rgba(255,255,255,0.4);
}
.hero-section .btn-premium-outline:hover {
  background: white;
  color: var(--text-hi);
  border-color: white;
}
.btn-premium-outline:hover {
  background: var(--accent-1);
  color: white;
}

/* Section Shared */
.section {
  padding: 100px 0;
}
.section-tag {
  color: var(--accent-1);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  font-size: 0.85rem;
  display: block;
  margin-bottom: 1rem;
}
.section-title {
  font-size: 2.5rem;
  margin-bottom: 1rem;
}
.section-subtitle {
  font-size: 1.1rem;
  color: var(--text-mid);
  max-width: 600px;
}

/* Premium Card (For Home Services) */
.premium-card {
  display: flex;
  flex-direction: column;
  background: var(--surface);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  border: 1px solid var(--border);
  transition: var(--transition);
  height: 100%;
}
.premium-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-hover);
  border-color: rgba(37, 99, 235, 0.3);
}
.premium-card-img {
  height: 240px;
  background-size: cover;
  background-position: center;
  border-bottom: 1px solid var(--border);
  transition: var(--transition);
}
.premium-card:hover .premium-card-img {
  transform: scale(1.03);
}
.premium-card-body {
  padding: 2.5rem;
  background: var(--surface);
  position: relative;
  z-index: 2;
  flex-grow: 1;
  display: flex;
  flex-direction: column;
}
.premium-card-body h3 {
  font-size: 1.5rem;
  margin-bottom: 1rem;
}
.premium-card-body p {
  color: var(--text-mid);
  margin-bottom: 2rem;
  flex-grow: 1;
}
.icon-box {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
}
.bg-indigo { background: rgba(79, 70, 229, 0.1); }
.text-indigo { color: #4f46e5; }
.bg-violet { background: rgba(124, 58, 237, 0.1); }
.text-violet { color: #7c3aed; }

.read-more {
  color: var(--accent-1);
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  transition: var(--transition);
}
.premium-card:hover .read-more {
  gap: 0.8rem;
}

/* Service Inner Pages */
.page-header {
  padding: 130px 0 60px;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  text-align: center;
}
.page-header h1 {
  font-size: 3.5rem;
  margin-bottom: 1.5rem;
}
.page-content {
  padding: 80px 0;
  font-size: 1.1rem;
}
.page-content p {
  margin-bottom: 1.5rem;
}
.feature-list {
  list-style: none;
  padding: 0;
  margin-top: 2rem;
}
.feature-list li {
  position: relative;
  padding-left: 2rem;
  margin-bottom: 1rem;
  font-weight: 500;
  color: var(--text-hi);
}
.feature-list li::before {
  content: '\F26A'; /* Bootstrap check-circle */
  font-family: "bootstrap-icons";
  position: absolute;
  left: 0;
  top: 2px;
  color: var(--accent-1);
  font-size: 1.2rem;
}

/* Footer */
.site-footer {
  background: #0f172a;
  color: rgba(255, 255, 255, 0.6);
  padding: 80px 0 40px;
  margin-top: auto;
}
.site-footer .brand {
  font-size: 1.5rem;
  font-weight: 800;
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}
.site-footer h6 {
  color: white;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 1.5rem;
}
.footer-link {
  color: rgba(255, 255, 255, 0.6);
  text-decoration: none;
  transition: var(--transition);
}
.footer-link:hover {
  color: white;
  padding-left: 5px;
}
.footer-contact-item {
  display: flex;
  gap: 1rem;
  margin-bottom: 1rem;
}
.footer-contact-item i {
  color: var(--accent-1);
}
.footer-divider {
  border-color: rgba(255, 255, 255, 0.1);
  margin: 3rem 0;
}

/* Minimal Light Tech Cards */
.tech-card-light {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 3rem 1.5rem;
  transition: var(--transition);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  height: 100%;
  box-shadow: var(--shadow-sm);
}
.tech-card-light:hover {
  transform: translateY(-8px);
  border-color: rgba(37, 99, 235, 0.2);
  box-shadow: var(--shadow-md);
}
.tech-icon-light {
  font-size: 3.5rem;
  margin-bottom: 0.5rem;
  transition: var(--transition);
}
.tech-card-light:hover .tech-icon-light {
  transform: scale(1.1);
}
.tech-title-light {
  font-weight: 700;
  color: var(--text-hi);
  font-size: 1.25rem;
  margin: 0;
  letter-spacing: -0.02em;
}

/* ============================================================
   SCROLL ANIMATIONS (Smooth Load)
   ============================================================ */
.fade-up-element {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.8s cubic-bezier(0.16, 1, 0.3, 1), transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
  will-change: opacity, transform;
}

.fade-up-element.is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* ============================================================
   SERVICES TAB FILTER STYLES
   ============================================================ */
.services-filter-nav {
  gap: 0.5rem;
  backdrop-filter: blur(8px);
  background-color: var(--surface) !important;
}

.filter-tab-btn {
  background: transparent;
  border: none;
  padding: 0.8rem 1.8rem;
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-mid);
  border-radius: 50px;
  transition: var(--transition);
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  cursor: pointer;
}

.filter-tab-btn i {
  font-size: 1.1rem;
  transition: var(--transition);
}

.filter-tab-btn:hover {
  color: var(--accent-1);
  background: rgba(37, 99, 235, 0.05);
}

.filter-tab-btn.active {
  background: var(--accent-gradient) !important;
  color: white !important;
  box-shadow: 0 8px 20px -4px rgba(79, 70, 229, 0.4);
}

.filter-tab-btn.active i {
  color: white;
  transform: scale(1.1);
}

/* Filtering Animations */
.service-card-item {
  transition: opacity 0.4s cubic-bezier(0.16, 1, 0.3, 1), transform 0.4s cubic-bezier(0.16, 1, 0.3, 1);
  will-change: opacity, transform;
}

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

.fade-out-custom {
  opacity: 0;
  transform: scale(0.95) translateY(10px);
}

/* Navbar Dropdown styling */
.dropdown-menu {
  animation: dropdownFade 0.3s cubic-bezier(0.16, 1, 0.3, 1) forwards;
  transform-origin: top center;
}
@keyframes dropdownFade {
  from {
    opacity: 0;
    transform: translateY(10px) scale(0.95);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}
.dropdown-item.hover-accent:hover {
  background: rgba(37, 99, 235, 0.05) !important;
  color: var(--accent-1) !important;
}

/* ============================================================
   AUDIENCE CARDS (Butcher Page / Target Groups)
   ============================================================ */
.audience-card {
  transition: all 0.35s cubic-bezier(0.16, 1, 0.3, 1);
  border: 1px solid var(--border) !important;
  background: var(--surface);
  position: relative;
  overflow: hidden;
}

.audience-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: linear-gradient(90deg, #dc3545 0%, #ffc107 100%);
  opacity: 0;
  transition: opacity 0.3s ease;
}

.audience-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 15px 30px rgba(220, 53, 69, 0.08) !important;
  border-color: rgba(220, 53, 69, 0.3) !important;
}

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

.audience-icon-wrapper {
  background-color: rgba(220, 53, 69, 0.08) !important;
  transition: all 0.3s ease;
}

.audience-card:hover .audience-icon-wrapper {
  background-color: #dc3545 !important;
}

.audience-card:hover .audience-icon-wrapper i {
  color: #ffffff !important;
  transform: scale(1.1);
}

.audience-icon-wrapper i {
  transition: all 0.3s ease;
}