/* ==========================================================================
   COPO LTD / SIT LTD - Modern Design System & Stylesheet
   ========================================================================== */

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

:root {
  --font-primary: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-body: 'Inter', sans-serif;

  /* Color Palette */
  --color-brand-primary: #0b1528;
  --color-brand-secondary: #0f2b48;
  --color-accent-blue: #2563eb;
  --color-accent-cyan: #06b6d4;
  --color-accent-teal: #10b981;
  --color-accent-teal-glow: rgba(16, 185, 129, 0.25);
  --color-accent-gradient: linear-gradient(135deg, #2563eb 0%, #06b6d4 100%);
  --color-hero-gradient: linear-gradient(135deg, #0b1528 0%, #172a46 50%, #0b192e 100%);

  /* Neutral Colors */
  --bg-main: #f8fafc;
  --bg-card: #ffffff;
  --bg-card-alt: #f1f5f9;
  --text-dark: #0f172a;
  --text-medium: #334155;
  --text-muted: #64748b;
  --text-light: #94a3b8;
  --border-light: #e2e8f0;
  --border-focus: #2563eb;

  /* Glassmorphism */
  --glass-nav-bg: rgba(11, 21, 40, 0.85);
  --glass-nav-border: rgba(255, 255, 255, 0.1);
  --glass-card-bg: rgba(255, 255, 255, 0.9);
  --glass-backdrop: blur(16px);

  /* Shadows */
  --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.04);
  --shadow-md: 0 10px 25px -5px rgba(15, 23, 42, 0.08), 0 8px 10px -6px rgba(15, 23, 42, 0.04);
  --shadow-lg: 0 20px 35px -10px rgba(15, 23, 42, 0.12), 0 10px 15px -5px rgba(15, 23, 42, 0.06);
  --shadow-glow: 0 0 25px rgba(37, 99, 235, 0.25);

  /* Border Radius */
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 24px;
  --radius-full: 9999px;

  /* Transitions */
  --transition-fast: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-normal: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-bounce: all 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
}

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

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

body {
  font-family: var(--font-body);
  background-color: var(--bg-main);
  color: var(--text-dark);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-primary);
  font-weight: 700;
  color: var(--text-dark);
  line-height: 1.25;
}

a {
  color: inherit;
  text-decoration: none;
}

button, input, textarea, select {
  font-family: inherit;
  font-size: inherit;
}

/* Container */
.container {
  width: 100%;
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 24px;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 14px 28px;
  border-radius: var(--radius-full);
  font-family: var(--font-primary);
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  transition: var(--transition-fast);
  border: none;
  outline: none;
  position: relative;
  overflow: hidden;
}

.btn-primary {
  background: var(--color-accent-gradient);
  color: #ffffff;
  box-shadow: 0 4px 15px rgba(37, 99, 235, 0.35);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(37, 99, 235, 0.45);
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.1);
  color: #ffffff;
  border: 1px solid rgba(255, 255, 255, 0.2);
  backdrop-filter: blur(8px);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.2);
  border-color: rgba(255, 255, 255, 0.4);
  transform: translateY(-2px);
}

.btn-outline {
  background: transparent;
  color: var(--color-brand-primary);
  border: 2px solid var(--color-accent-blue);
}

.btn-outline:hover {
  background: var(--color-accent-blue);
  color: #ffffff;
  transform: translateY(-2px);
}

/* Badge */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px;
  border-radius: var(--radius-full);
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.5px;
  text-transform: uppercase;
}

.badge-glow {
  background: rgba(6, 182, 212, 0.12);
  color: var(--color-accent-cyan);
  border: 1px solid rgba(6, 182, 212, 0.3);
}

/* Header & Navigation */
header.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background: var(--glass-nav-bg);
  backdrop-filter: var(--glass-backdrop);
  -webkit-backdrop-filter: var(--glass-backdrop);
  border-bottom: 1px solid var(--glass-nav-border);
  transition: var(--transition-normal);
}

.navbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 80px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 12px;
  font-family: var(--font-primary);
  font-weight: 800;
  font-size: 1.5rem;
  color: #ffffff;
}

.logo-icon {
  width: 40px;
  height: 40px;
  background: var(--color-accent-gradient);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #ffffff;
  font-size: 1.2rem;
  box-shadow: 0 4px 12px rgba(6, 182, 212, 0.4);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
  list-style: none;
}

.nav-link {
  color: #cbd5e1;
  font-weight: 500;
  font-size: 0.95rem;
  transition: var(--transition-fast);
  position: relative;
}

.nav-link:hover, .nav-link.active {
  color: #ffffff;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -6px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--color-accent-cyan);
  transition: var(--transition-fast);
  border-radius: 2px;
}

.nav-link:hover::after, .nav-link.active::after {
  width: 100%;
}

.mobile-toggle {
  display: none;
  background: none;
  border: none;
  color: #ffffff;
  font-size: 1.5rem;
  cursor: pointer;
}

/* Hero Section */
.hero {
  position: relative;
  background: var(--color-hero-gradient);
  color: #ffffff;
  padding: 160px 0 100px;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -20%;
  right: -10%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(37, 99, 235, 0.25) 0%, rgba(0, 0, 0, 0) 70%);
  border-radius: 50%;
  pointer-events: none;
}

.hero::after {
  content: '';
  position: absolute;
  bottom: -20%;
  left: -10%;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(6, 182, 212, 0.2) 0%, rgba(0, 0, 0, 0) 70%);
  border-radius: 50%;
  pointer-events: none;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 60px;
  align-items: center;
  position: relative;
  z-index: 2;
}

.hero-content h1 {
  font-size: 3.5rem;
  color: #ffffff;
  letter-spacing: -1px;
  margin: 20px 0 24px;
}

.hero-content h1 span {
  background: linear-gradient(135deg, #60a5fa 0%, #38bdf8 50%, #34d399 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-content p {
  font-size: 1.15rem;
  color: #94a3b8;
  margin-bottom: 36px;
  max-width: 600px;
  line-height: 1.7;
}

.hero-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.hero-card-preview {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--radius-lg);
  padding: 32px;
  backdrop-filter: blur(12px);
  box-shadow: 0 20px 40px rgba(0,0,0,0.3);
  position: relative;
}

.hero-card-preview::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: var(--radius-lg);
  padding: 1px;
  background: linear-gradient(135deg, rgba(255,255,255,0.3), rgba(255,255,255,0.05));
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  pointer-events: none;
}

.preview-badge-group {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.preview-item {
  display: flex;
  align-items: center;
  gap: 16px;
  background: rgba(255, 255, 255, 0.06);
  padding: 16px;
  border-radius: var(--radius-md);
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.preview-icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  background: var(--color-accent-gradient);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  color: #fff;
  flex-shrink: 0;
}

.preview-text h4 {
  color: #ffffff;
  font-size: 1.05rem;
  margin-bottom: 4px;
}

.preview-text p {
  color: #94a3b8;
  font-size: 0.85rem;
}

/* Stats Section */
.stats-section {
  margin-top: -50px;
  position: relative;
  z-index: 10;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  background: var(--bg-card);
  padding: 40px;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--border-light);
}

.stat-item {
  text-align: center;
  padding: 12px;
  border-right: 1px solid var(--border-light);
}

.stat-item:last-child {
  border-right: none;
}

.stat-number {
  font-size: 2.8rem;
  font-weight: 800;
  font-family: var(--font-primary);
  background: var(--color-accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  margin-bottom: 4px;
}

.stat-label {
  color: var(--text-muted);
  font-weight: 600;
  font-size: 0.95rem;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

/* Section Header */
.section-header {
  text-align: center;
  max-width: 680px;
  margin: 0 auto 60px;
}

.section-header .section-tag {
  color: var(--color-accent-blue);
  font-weight: 700;
  font-size: 0.9rem;
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 12px;
  display: block;
}

.section-header h2 {
  font-size: 2.5rem;
  color: var(--text-dark);
  margin-bottom: 16px;
}

.section-header p {
  color: var(--text-muted);
  font-size: 1.1rem;
}

/* Services Section */
.services-section {
  padding: 100px 0;
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 30px;
}

.service-card {
  background: var(--bg-card);
  padding: 36px 28px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-light);
  box-shadow: var(--shadow-sm);
  transition: var(--transition-normal);
  position: relative;
  display: flex;
  flex-direction: column;
}

.service-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(37, 99, 235, 0.3);
}

.service-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 24px;
  right: 24px;
  height: 4px;
  background: var(--color-accent-gradient);
  border-radius: 4px 4px 0 0;
  opacity: 0;
  transition: var(--transition-fast);
}

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

.service-icon {
  width: 60px;
  height: 60px;
  background: rgba(37, 99, 235, 0.08);
  color: var(--color-accent-blue);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.6rem;
  margin-bottom: 24px;
  transition: var(--transition-fast);
}

.service-card:hover .service-icon {
  background: var(--color-accent-gradient);
  color: #ffffff;
}

.service-card h3 {
  font-size: 1.35rem;
  margin-bottom: 12px;
}

.service-card p {
  color: var(--text-muted);
  font-size: 0.95rem;
  line-height: 1.6;
  margin-bottom: 20px;
  flex-grow: 1;
}

.service-list {
  list-style: none;
  margin-bottom: 24px;
}

.service-list li {
  font-size: 0.9rem;
  color: var(--text-medium);
  margin-bottom: 8px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.service-list li i {
  color: var(--color-accent-teal);
  font-size: 0.85rem;
}

/* About / Company Section */
.about-section {
  padding: 100px 0;
  background: var(--bg-card-alt);
}

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.about-content h2 {
  font-size: 2.4rem;
  margin-bottom: 20px;
}

.about-content p {
  color: var(--text-muted);
  font-size: 1.05rem;
  margin-bottom: 24px;
}

.company-info-card {
  background: var(--bg-card);
  padding: 32px;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  border: 1px solid var(--border-light);
}

.info-item {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  padding: 16px 0;
  border-bottom: 1px solid var(--border-light);
}

.info-item:last-child {
  border-bottom: none;
}

.info-icon {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: rgba(6, 182, 212, 0.1);
  color: var(--color-accent-cyan);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  flex-shrink: 0;
}

.info-details h4 {
  font-size: 0.9rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 2px;
}

.info-details p {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text-dark);
}

/* FAQ Section */
.faq-section {
  padding: 100px 0;
}

.faq-accordion {
  max-width: 800px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.faq-item {
  background: var(--bg-card);
  border-radius: var(--radius-md);
  border: 1px solid var(--border-light);
  overflow: hidden;
  transition: var(--transition-fast);
}

.faq-item.active {
  border-color: var(--color-accent-blue);
  box-shadow: var(--shadow-md);
}

.faq-header {
  padding: 22px 28px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  cursor: pointer;
  user-select: none;
}

.faq-header h3 {
  font-size: 1.1rem;
  font-weight: 600;
}

.faq-icon {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--bg-card-alt);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-dark);
  transition: var(--transition-normal);
}

.faq-item.active .faq-icon {
  transform: rotate(180deg);
  background: var(--color-accent-blue);
  color: #ffffff;
}

.faq-body {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s ease-out;
  padding: 0 28px;
}

.faq-item.active .faq-body {
  padding: 0 28px 24px 28px;
}

.faq-body p {
  color: var(--text-muted);
  font-size: 0.98rem;
  line-height: 1.6;
}

/* Contact Section */
.contact-section {
  padding: 100px 0;
  background: var(--color-brand-primary);
  color: #ffffff;
  position: relative;
  overflow: hidden;
}

.contact-section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: radial-gradient(circle at 80% 20%, rgba(37, 99, 235, 0.15) 0%, transparent 60%);
  pointer-events: none;
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 60px;
  position: relative;
  z-index: 2;
}

.contact-info h2 {
  color: #ffffff;
  font-size: 2.4rem;
  margin-bottom: 16px;
}

.contact-info p {
  color: #94a3b8;
  font-size: 1.05rem;
  margin-bottom: 36px;
}

.contact-details {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.contact-detail-card {
  display: flex;
  align-items: center;
  gap: 20px;
  background: rgba(255, 255, 255, 0.05);
  padding: 20px;
  border-radius: var(--radius-md);
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.contact-detail-icon {
  width: 50px;
  height: 50px;
  border-radius: 14px;
  background: var(--color-accent-gradient);
  color: #ffffff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  flex-shrink: 0;
}

.contact-detail-text h4 {
  color: #ffffff;
  font-size: 1rem;
}

.contact-detail-text p {
  color: #94a3b8;
  font-size: 0.9rem;
  margin: 0;
}

/* Contact Form */
.contact-form-container {
  background: #ffffff;
  padding: 44px;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  color: var(--text-dark);
}

.contact-form-container h3 {
  font-size: 1.6rem;
  margin-bottom: 24px;
  color: var(--text-dark);
}

.form-group {
  margin-bottom: 20px;
}

.form-group label {
  display: block;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-dark);
  margin-bottom: 8px;
}

.form-control {
  width: 100%;
  padding: 14px 18px;
  border: 1.5px solid var(--border-light);
  border-radius: var(--radius-sm);
  background: var(--bg-main);
  color: var(--text-dark);
  transition: var(--transition-fast);
  outline: none;
}

.form-control:focus {
  border-color: var(--border-focus);
  background: #ffffff;
  box-shadow: 0 0 0 4px rgba(37, 99, 235, 0.12);
}

textarea.form-control {
  resize: vertical;
  min-height: 130px;
}

.btn-submit {
  width: 100%;
  padding: 16px;
  font-size: 1.05rem;
  border-radius: var(--radius-sm);
}

/* Spinner */
.spinner {
  display: inline-block;
  width: 20px;
  height: 20px;
  border: 3px solid rgba(255, 255, 255, 0.3);
  border-radius: 50%;
  border-top-color: #ffffff;
  animation: spin 0.8s ease-in-out infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* Toast Alert System */
.toast-container {
  position: fixed;
  bottom: 30px;
  right: 30px;
  z-index: 9999;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.toast {
  display: flex;
  align-items: center;
  gap: 16px;
  min-width: 320px;
  padding: 16px 20px;
  border-radius: var(--radius-md);
  background: #ffffff;
  color: var(--text-dark);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.18);
  border-left: 5px solid #2563eb;
  transform: translateX(120%);
  transition: transform 0.4s cubic-bezier(0.68, -0.55, 0.27, 1.55);
}

.toast.show {
  transform: translateX(0);
}

.toast.toast-success {
  border-left-color: #10b981;
}

.toast.toast-success .toast-icon {
  color: #10b981;
}

.toast.toast-error {
  border-left-color: #ef4444;
}

.toast.toast-error .toast-icon {
  color: #ef4444;
}

.toast-icon {
  font-size: 1.4rem;
}

.toast-content h4 {
  font-size: 0.95rem;
  margin-bottom: 2px;
}

.toast-content p {
  font-size: 0.85rem;
  color: var(--text-muted);
}

/* Footer */
footer.site-footer {
  background: #070d18;
  color: #64748b;
  padding: 80px 0 30px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 60px;
}

.footer-brand .logo {
  margin-bottom: 16px;
}

.footer-brand p {
  font-size: 0.95rem;
  max-width: 320px;
  line-height: 1.6;
}

.footer-col h4 {
  color: #ffffff;
  font-size: 1.1rem;
  margin-bottom: 20px;
}

.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.footer-links a {
  color: #94a3b8;
  font-size: 0.9rem;
  transition: var(--transition-fast);
}

.footer-links a:hover {
  color: #ffffff;
  padding-left: 4px;
}

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 30px;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  font-size: 0.88rem;
}

/* Responsive Styles */
@media (max-width: 1024px) {
  .hero-grid, .about-grid, .contact-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .stat-item {
    border-right: none;
    border-bottom: 1px solid var(--border-light);
    padding-bottom: 20px;
  }

  .stat-item:nth-child(3), .stat-item:nth-child(4) {
    border-bottom: none;
  }

  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 768px) {
  .mobile-toggle {
    display: block;
  }

  .nav-links {
    position: fixed;
    top: 80px;
    left: 0;
    width: 100%;
    background: var(--color-brand-primary);
    flex-direction: column;
    padding: 30px;
    gap: 20px;
    border-bottom: 1px solid var(--glass-nav-border);
    transform: translateY(-150%);
    transition: transform 0.3s ease;
  }

  .nav-links.active {
    transform: translateY(0);
  }

  .hero-content h1 {
    font-size: 2.5rem;
  }

  .contact-form-container {
    padding: 24px;
  }

  .stats-grid {
    grid-template-columns: 1fr;
  }

  .footer-grid {
    grid-template-columns: 1fr;
  }

  .footer-bottom {
    flex-direction: column;
    gap: 12px;
    text-align: center;
  }
}