/* ==========================================================================
   PKPOJS.COM - Modern Enterprise Academic Theme & Styling System
   Tech Stack: HTML5, CSS3, Bootstrap 5, jQuery
   Design Aesthetic: Dark Slate Navy, Electric Cyan, Emerald Accents, Glassmorphism
   ========================================================================== */

@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-heading: 'Outfit', sans-serif;
  --font-body: 'Inter', sans-serif;

  /* Dark Palette (Default) */
  --bg-primary: #07090e;
  --bg-secondary: #0c101a;
  --bg-card: rgba(14, 20, 34, 0.85);
  --bg-card-hover: rgba(24, 34, 56, 0.95);

  --border-color: rgba(255, 255, 255, 0.12);
  --border-highlight: rgba(0, 242, 254, 0.4);

  --text-main: #f8fafc;
  --text-muted: #cbd5e1; /* High-contrast silver white */
  --text-heading: #ffffff;

  --accent-cyan: #00f2fe;
  --accent-blue: #4facfe;
  --accent-emerald: #10b981;
  --accent-purple: #8b5cf6;
  --accent-amber: #f59e0b;

  --gradient-brand: linear-gradient(135deg, #00f2fe 0%, #4facfe 100%);
  --gradient-emerald: linear-gradient(135deg, #10b981 0%, #059669 100%);
  --gradient-purple: linear-gradient(135deg, #a855f7 0%, #6366f1 100%);
  --gradient-dark: linear-gradient(180deg, rgba(12, 16, 26, 0.95) 0%, rgba(7, 9, 14, 0.98) 100%);

  --shadow-glow: 0 0 35px rgba(0, 242, 254, 0.2);
  --shadow-card: 0 10px 30px -10px rgba(0, 0, 0, 0.6);
  --glass-backdrop: blur(16px);
  --radius-lg: 18px;
  --radius-md: 12px;
  --radius-sm: 8px;

  --transition-smooth: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Light Theme Variables */
[data-theme="light"] {
  --bg-primary: #f8fafc;
  --bg-secondary: #ffffff;
  --bg-card: rgba(255, 255, 255, 0.95);
  --bg-card-hover: rgba(241, 245, 249, 0.98);

  --border-color: rgba(0, 0, 0, 0.1);
  --border-highlight: rgba(0, 114, 255, 0.4);

  --text-main: #1e293b;
  --text-muted: #475569;
  --text-heading: #0f172a;

  --shadow-glow: 0 0 35px rgba(0, 114, 255, 0.15);
  --shadow-card: 0 10px 30px -10px rgba(0, 0, 0, 0.08);
}

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

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

body {
  font-family: var(--font-body);
  background-color: var(--bg-primary);
  color: var(--text-main);
  line-height: 1.65;
  overflow-x: hidden;
  transition: background-color 0.3s ease, color 0.3s ease;
}

h1, h2, h3, h4, h5, h6, .font-heading {
  font-family: var(--font-heading);
  color: var(--text-heading);
  font-weight: 700;
  letter-spacing: -0.02em;
}

p {
  color: var(--text-muted);
}

/* High-Contrast Bootstrap Utility Overrides */
.text-muted {
  color: var(--text-muted) !important;
}

.text-sm {
  font-size: 0.92rem;
}

.text-xs {
  font-size: 0.82rem;
}

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

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

.border-secondary {
  border-color: var(--border-color) !important;
}

a {
  text-decoration: none;
  transition: var(--transition-smooth);
}

.bg-gradient-brand {
  background: var(--gradient-brand);
}

.top-offer-bar {
  background: var(--gradient-brand);
  color: #07090e;
  box-shadow: 0 4px 15px rgba(0, 242, 254, 0.25);
  position: relative;
  z-index: 1040;
}

.text-gradient {
  background: var(--gradient-brand);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.text-gradient-emerald {
  background: var(--gradient-emerald);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.bg-glass {
  background: var(--bg-card);
  backdrop-filter: var(--glass-backdrop);
  -webkit-backdrop-filter: var(--glass-backdrop);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
}

.bg-glass:hover {
  border-color: var(--border-highlight);
}

/* Glowing Border Accent */
.glow-effect {
  position: relative;
}

.glow-effect::before {
  content: '';
  position: absolute;
  top: -2px;
  left: -2px;
  right: -2px;
  bottom: -2px;
  background: var(--gradient-brand);
  border-radius: calc(var(--radius-lg) + 2px);
  z-index: -1;
  opacity: 0;
  transition: var(--transition-smooth);
  filter: blur(10px);
}

.glow-effect:hover::before {
  opacity: 0.6;
}

/* Custom Buttons */
.btn-primary-gradient {
  background: var(--gradient-brand);
  color: #07090e;
  font-family: var(--font-heading);
  font-weight: 700;
  padding: 12px 28px;
  border-radius: 50px;
  border: none;
  box-shadow: 0 4px 20px rgba(0, 242, 254, 0.35);
  transition: var(--transition-smooth);
  display: inline-flex;
  align-items: center;
  gap: 10px;
}

.btn-primary-gradient:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(0, 242, 254, 0.5);
  color: #000;
}

.btn-outline-glass {
  background: rgba(255, 255, 255, 0.08);
  color: var(--text-heading);
  font-family: var(--font-heading);
  font-weight: 600;
  padding: 12px 28px;
  border-radius: 50px;
  border: 1px solid var(--border-color);
  backdrop-filter: blur(10px);
  transition: var(--transition-smooth);
  display: inline-flex;
  align-items: center;
  gap: 10px;
}

.btn-outline-glass:hover {
  background: rgba(255, 255, 255, 0.16);
  border-color: var(--accent-cyan);
  color: var(--accent-cyan);
  transform: translateY(-2px);
}

/* Navbar */
.navbar-pkp {
  background: rgba(7, 9, 14, 0.9);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-color);
  padding: 16px 0;
  transition: var(--transition-smooth);
}

.navbar-pkp.scrolled {
  padding: 10px 0;
  background: rgba(7, 9, 14, 0.98);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
}

.navbar-brand {
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 1.6rem;
  color: var(--text-heading) !important;
  display: flex;
  align-items: center;
  gap: 10px;
}

.navbar-brand .logo-icon {
  width: 42px;
  height: 42px;
  background: var(--gradient-brand);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #07090e;
  font-size: 1.3rem;
  box-shadow: 0 0 15px rgba(0, 242, 254, 0.4);
}

.nav-link {
  color: var(--text-muted) !important;
  font-weight: 500;
  padding: 8px 16px !important;
  transition: var(--transition-smooth);
}

.nav-link:hover, .nav-link.active {
  color: var(--accent-cyan) !important;
}

/* Hero Section */
.hero-section {
  position: relative;
  padding: 160px 0 100px;
  overflow: hidden;
  background: radial-gradient(circle at 50% 20%, rgba(0, 242, 254, 0.1) 0%, transparent 65%);
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 18px;
  border-radius: 50px;
  background: rgba(0, 242, 254, 0.12);
  border: 1px solid rgba(0, 242, 254, 0.35);
  color: var(--accent-cyan);
  font-weight: 600;
  font-size: 0.9rem;
  margin-bottom: 25px;
}

.hero-badge .pulse-dot {
  width: 8px;
  height: 8px;
  background: var(--accent-cyan);
  border-radius: 50%;
  box-shadow: 0 0 10px var(--accent-cyan);
  animation: pulse 1.8s infinite;
}

@keyframes pulse {
  0% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(0, 242, 254, 0.7); }
  70% { transform: scale(1); box-shadow: 0 0 0 10px rgba(0, 242, 254, 0); }
  100% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(0, 242, 254, 0); }
}

.hero-title {
  font-size: 3.5rem;
  line-height: 1.15;
  margin-bottom: 25px;
  color: #ffffff;
}

.hero-subtitle {
  font-size: 1.2rem;
  color: #e2e8f0;
  max-width: 680px;
  margin-bottom: 40px;
}

.hero-stats {
  display: flex;
  gap: 30px;
  margin-top: 50px;
  padding-top: 30px;
  border-top: 1px solid var(--border-color);
}

.stat-item .stat-number {
  font-family: var(--font-heading);
  font-size: 2rem;
  font-weight: 800;
  color: var(--text-heading);
}

.stat-item .stat-label {
  font-size: 0.9rem;
  color: var(--text-muted);
}

/* Feature Cards Grid */
.service-card {
  padding: 35px;
  border-radius: var(--radius-lg);
  transition: var(--transition-smooth);
  height: 100%;
  position: relative;
  z-index: 1;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
}

.service-card h4 {
  color: #ffffff;
}

.service-card p {
  color: #cbd5e1;
}

.service-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-glow);
  border-color: var(--accent-cyan);
}

.service-icon {
  width: 60px;
  height: 60px;
  border-radius: 16px;
  background: rgba(0, 242, 254, 0.12);
  color: var(--accent-cyan);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.8rem;
  margin-bottom: 24px;
  border: 1px solid rgba(0, 242, 254, 0.3);
}

.service-card:hover .service-icon {
  background: var(--gradient-brand);
  color: #07090e;
}

.service-features-list {
  list-style: none;
  padding: 0;
  margin-top: 20px;
}

.service-features-list li {
  font-size: 0.92rem;
  color: #e2e8f0;
  margin-bottom: 10px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.service-features-list li i {
  color: var(--accent-emerald);
}

/* Theme Showcase Section */
.theme-filter-btn {
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid var(--border-color);
  color: #e2e8f0;
  padding: 8px 22px;
  border-radius: 30px;
  font-size: 0.92rem;
  font-weight: 600;
  transition: var(--transition-smooth);
  margin: 4px;
}

.theme-filter-btn:hover, .theme-filter-btn.active {
  background: var(--accent-cyan);
  color: #07090e;
  border-color: var(--accent-cyan);
  font-weight: 700;
}

.theme-card {
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: var(--transition-smooth);
  background: var(--bg-card);
  border: 1px solid var(--border-color);
}

.theme-card h5 {
  color: #ffffff;
}

.theme-card p {
  color: #cbd5e1;
}

.theme-card:hover {
  transform: translateY(-6px);
  border-color: var(--accent-cyan);
  box-shadow: 0 15px 35px rgba(0, 242, 254, 0.2);
}

.theme-preview-img {
  height: 220px;
  background-size: cover;
  background-position: top center;
  position: relative;
}

.theme-overlay {
  position: absolute;
  inset: 0;
  background: rgba(7, 9, 14, 0.8);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  opacity: 0;
  transition: var(--transition-smooth);
}

.theme-card:hover .theme-overlay {
  opacity: 1;
}

.theme-tag {
  display: inline-block;
  padding: 4px 12px;
  border-radius: 6px;
  font-size: 0.82rem;
  font-weight: 600;
  background: rgba(0, 242, 254, 0.15);
  color: var(--accent-cyan);
}

/* Price Calculator */
.calc-box {
  padding: 40px;
  border-radius: var(--radius-lg);
  background: var(--bg-card);
  border: 1px solid var(--border-color);
}

.form-range {
  height: 8px;
  border-radius: 4px;
}

.form-range::-webkit-slider-thumb {
  background: var(--accent-cyan);
  box-shadow: 0 0 10px var(--accent-cyan);
}

.price-display {
  font-family: var(--font-heading);
  font-size: 3.8rem;
  font-weight: 800;
  color: var(--accent-cyan);
}

/* Partners & Integration Logos */
.partner-badge {
  padding: 24px 16px;
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid var(--border-color);
  text-align: center;
  transition: var(--transition-smooth);
  height: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

.partner-badge:hover {
  background: rgba(255, 255, 255, 0.12);
  border-color: var(--accent-cyan);
  transform: translateY(-4px);
}

.partner-badge i {
  font-size: 2.2rem;
  color: var(--accent-cyan);
  margin-bottom: 12px;
}

.partner-badge span {
  font-weight: 700;
  font-size: 1rem;
  color: #ffffff;
}

.partner-badge small {
  color: #cbd5e1 !important;
}

/* Accordion FAQs */
.accordion-item {
  background: var(--bg-card) !important;
  border: 1px solid var(--border-color) !important;
  margin-bottom: 16px;
  border-radius: var(--radius-md) !important;
  overflow: hidden;
}

.accordion-button {
  background: transparent !important;
  color: #ffffff !important;
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 1.15rem;
  padding: 22px 26px;
}

.accordion-button:not(.collapsed) {
  background: rgba(0, 242, 254, 0.08) !important;
  color: var(--accent-cyan) !important;
  box-shadow: none;
}

.accordion-button::after {
  filter: invert(1);
}

.accordion-body {
  color: #cbd5e1 !important;
  font-size: 1.02rem;
  line-height: 1.7;
  padding: 0 26px 24px;
}

/* Footer */
.footer-pkp {
  background: #05070a;
  border-top: 1px solid var(--border-color);
  padding: 80px 0 30px;
}

.footer-link {
  color: #cbd5e1;
  transition: var(--transition-smooth);
  display: inline-block;
  margin-bottom: 10px;
}

.footer-link:hover {
  color: var(--accent-cyan);
  transform: translateX(4px);
}

/* Modal Customization */
.modal-content {
  background: #0d121d;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  color: #e2e8f0;
}

.modal-header {
  border-bottom: 1px solid var(--border-color);
}

.modal-footer {
  border-top: 1px solid var(--border-color);
}

.btn-close {
  filter: invert(1);
}

/* Form Controls */
.form-control, .form-select {
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid var(--border-color);
  color: #ffffff;
  border-radius: var(--radius-sm);
  padding: 12px 16px;
}

.form-control:focus, .form-select:focus {
  background: rgba(255, 255, 255, 0.12);
  border-color: var(--accent-cyan);
  color: #ffffff;
  box-shadow: 0 0 15px rgba(0, 242, 254, 0.25);
}

/* Form check label text */
.form-check-label {
  color: #e2e8f0 !important;
}

/* Responsive adjustments */
@media (max-width: 991px) {
  .hero-title {
    font-size: 2.6rem;
  }
  .hero-stats {
    flex-wrap: wrap;
    gap: 20px;
  }
  .price-display {
    font-size: 3rem;
  }
}