/* ==========================================================================
   Abacus Logistics Solutions (ALS) - Modern 2026 Enterprise UI Theme
   Pure static CSS - No build tools or Node.js required
   ========================================================================== */

:root {
  --als-primary: #0f766e;
  --als-primary-hover: #115e59;
  --als-primary-light: #14b8a6;
  --als-primary-soft: rgba(15, 118, 110, 0.08);
  --als-accent: #0284c7;
  --als-accent-soft: rgba(2, 132, 199, 0.08);
  --als-dark: #0f172a;
  --als-slate: #1e293b;
  --als-gray: #475569;
  --als-muted: #64748b;
  --als-light: #f8fafc;
  --als-border: rgba(148, 163, 184, 0.2);
  --als-border-focus: #0d9488;
  --als-radius-sm: 8px;
  --als-radius-md: 14px;
  --als-radius-lg: 20px;
  --als-shadow-sm: 0 1px 3px rgba(15, 23, 42, 0.06);
  --als-shadow-md: 0 10px 25px -5px rgba(15, 23, 42, 0.06), 0 8px 10px -6px rgba(15, 23, 42, 0.04);
  --als-shadow-hover: 0 20px 35px -5px rgba(15, 118, 110, 0.12), 0 10px 15px -5px rgba(15, 23, 42, 0.04);
}

/* Base & Typography Improvements */
body {
  font-family: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  color: var(--als-slate);
  background-color: #fafcfb;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

::selection {
  background: rgba(15, 118, 110, 0.2);
  color: var(--als-dark);
}

/* Navbar Upgrades */
.navbar {
  background: rgba(255, 255, 255, 0.92) !important;
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  border-bottom: 1px solid var(--als-border);
  transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  padding-block: 0.85rem;
}

.navbar.scrolled {
  box-shadow: 0 8px 25px rgba(15, 23, 42, 0.07);
}

.brand-mark img {
  height: 42px;
  width: auto;
  border-radius: 8px;
  filter: drop-shadow(0 2px 4px rgba(15, 118, 110, 0.15));
}

.brand-name {
  font-weight: 750;
  color: var(--als-dark);
  letter-spacing: -0.02em;
}

.brand-name span {
  color: var(--als-primary);
}

.brand-caption {
  font-size: 0.65rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--als-muted);
  font-weight: 600;
}

.navbar .nav-link {
  font-weight: 550;
  font-size: 0.92rem;
  color: #334155;
  padding: 0.5rem 0.9rem !important;
  border-radius: var(--als-radius-sm);
  transition: all 0.2s ease;
}

.navbar .nav-link:hover {
  color: var(--als-primary);
  background-color: var(--als-primary-soft);
}

.nav-cta-btn {
  background: linear-gradient(135deg, var(--als-primary), #0d9488);
  color: #ffffff !important;
  border-radius: 50px !important;
  padding: 0.5rem 1.25rem !important;
  font-weight: 600;
  box-shadow: 0 4px 14px rgba(15, 118, 110, 0.25);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.nav-cta-btn:hover {
  transform: translateY(-1px);
  box-shadow: 0 6px 20px rgba(15, 118, 110, 0.35);
  color: #ffffff !important;
}

/* Modern Hero Section */
.hero-section {
  position: relative;
  background: radial-gradient(ellipse at 85% 15%, rgba(20, 184, 166, 0.12) 0%, transparent 45%),
              radial-gradient(ellipse at 15% 50%, rgba(2, 132, 199, 0.08) 0%, transparent 40%),
              linear-gradient(180deg, #f8fafc 0%, #ffffff 100%);
  padding-top: 8.5rem;
  padding-bottom: 5rem;
  overflow: hidden;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  background: rgba(255, 255, 255, 0.9);
  border: 1px solid rgba(15, 118, 110, 0.2);
  padding: 0.35rem 0.95rem;
  border-radius: 50px;
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--als-primary);
  box-shadow: 0 2px 8px rgba(15, 118, 110, 0.08);
}

.hero-badge .dot {
  width: 8px;
  height: 8px;
  background: var(--als-primary-light);
  border-radius: 50%;
  animation: pulse-dot 2s infinite ease-in-out;
}

@keyframes pulse-dot {
  0%, 100% { opacity: 1; transform: scale(1); box-shadow: 0 0 0 0 rgba(20, 184, 166, 0.5); }
  50% { opacity: 0.7; transform: scale(1.15); box-shadow: 0 0 0 6px rgba(20, 184, 166, 0); }
}

.hero-title {
  font-size: clamp(2.4rem, 5.5vw, 3.8rem);
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.035em;
  color: var(--als-dark);
}

.hero-highlight {
  background: linear-gradient(135deg, var(--als-primary) 0%, #0d9488 50%, #0284c7 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-subtitle {
  font-size: 1.12rem;
  color: var(--als-muted);
  line-height: 1.7;
  max-width: 580px;
}

/* Stat Proof Bar */
.proof-bar {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(130px, 1fr));
  gap: 1.25rem;
  padding: 1.25rem 1.5rem;
  background: rgba(255, 255, 255, 0.85);
  border: 1px solid var(--als-border);
  border-radius: var(--als-radius-md);
  box-shadow: var(--als-shadow-sm);
  margin-top: 2rem;
}

.proof-item h4 {
  font-size: 1.75rem;
  font-weight: 800;
  color: var(--als-dark);
  margin-bottom: 0.15rem;
  letter-spacing: -0.03em;
  background: linear-gradient(135deg, var(--als-primary), #0284c7);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.proof-item span {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--als-muted);
}

/* Interactive Hero Preview Card */
.preview-window {
  background: #ffffff;
  border: 1px solid rgba(226, 232, 240, 0.9);
  border-radius: var(--als-radius-lg);
  box-shadow: 0 25px 50px -12px rgba(15, 23, 42, 0.12), 0 0 0 1px rgba(15, 118, 110, 0.05);
  overflow: hidden;
  transition: transform 0.4s ease, box-shadow 0.4s ease;
}

.preview-window:hover {
  transform: translateY(-4px);
  box-shadow: 0 35px 60px -15px rgba(15, 118, 110, 0.16);
}

.window-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.85rem 1.25rem;
  background: #f8fafc;
  border-bottom: 1px solid var(--als-border);
}

.window-controls {
  display: flex;
  gap: 6px;
}

.window-controls span {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  display: inline-block;
}

.control-close { background: #f87171; }
.control-min { background: #fbbf24; }
.control-max { background: #34d399; }

.window-title {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--als-muted);
  font-family: monospace;
}

.window-body {
  padding: 1.5rem;
}

.pipeline-step {
  padding: 0.85rem;
  border-radius: var(--als-radius-sm);
  background: #f8fafc;
  border: 1px solid var(--als-border);
  transition: all 0.3s ease;
}

.pipeline-step.active {
  background: rgba(15, 118, 110, 0.06);
  border-color: rgba(15, 118, 110, 0.3);
}

.pipeline-step .step-num {
  font-size: 0.7rem;
  font-weight: 700;
  color: var(--als-primary);
}

.pipeline-step h6 {
  font-size: 0.88rem;
  font-weight: 700;
  color: var(--als-dark);
  margin: 0.2rem 0;
}

.pipeline-step small {
  font-size: 0.72rem;
  color: var(--als-muted);
}

/* Sections Global Styling */
section {
  padding-block: 5.5rem;
  position: relative;
}

section:nth-of-type(even) {
  background-color: #f8fafc;
}

.section-tag {
  display: inline-block;
  font-size: 0.78rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--als-primary);
  background: var(--als-primary-soft);
  padding: 0.3rem 0.8rem;
  border-radius: 50px;
  margin-bottom: 0.75rem;
}

.section-title {
  font-size: clamp(2rem, 3.8vw, 2.75rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  color: var(--als-dark);
  margin-bottom: 0.65rem;
}

.section-subtitle {
  font-size: 1.05rem;
  color: var(--als-muted);
  max-width: 680px;
  margin-bottom: 2.5rem;
}

/* Modern Enterprise Cards */
.modern-card {
  background: #ffffff;
  border: 1px solid var(--als-border);
  border-radius: var(--als-radius-md);
  padding: 1.75rem;
  box-shadow: var(--als-shadow-sm);
  transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  position: relative;
  overflow: hidden;
  height: 100%;
  display: flex;
  flex-direction: column;
}

.modern-card:hover {
  transform: translateY(-5px);
  border-color: rgba(15, 118, 110, 0.3);
  box-shadow: var(--als-shadow-hover);
}

.card-top-accent {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--als-primary), var(--als-accent));
  opacity: 0;
  transition: opacity 0.3s ease;
}

.modern-card:hover .card-top-accent {
  opacity: 1;
}

.card-icon-box {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  background: var(--als-primary-soft);
  color: var(--als-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.35rem;
  margin-bottom: 1.25rem;
}

.modern-card h4, .modern-card h5 {
  font-weight: 750;
  color: var(--als-dark);
  letter-spacing: -0.02em;
  margin-bottom: 0.5rem;
}

.modern-card p {
  color: var(--als-gray);
  font-size: 0.92rem;
  line-height: 1.65;
}

.feature-pill-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  margin-top: 1rem;
  margin-bottom: 1.25rem;
}

.feature-pill {
  font-size: 0.75rem;
  font-weight: 600;
  background: #f1f5f9;
  color: #334155;
  padding: 0.25rem 0.65rem;
  border-radius: 50px;
}

/* Flagship Solution Hero (Insta CrDr) */
.flagship-banner {
  background: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);
  color: #ffffff;
  border-radius: var(--als-radius-lg);
  padding: 2.5rem;
  box-shadow: 0 25px 50px -12px rgba(15, 23, 42, 0.25);
  position: relative;
  overflow: hidden;
}

.flagship-banner::before {
  content: '';
  position: absolute;
  top: -40%;
  right: -20%;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(20, 184, 166, 0.2) 0%, transparent 70%);
  pointer-events: none;
}

.flagship-banner h3 {
  font-size: 2rem;
  font-weight: 800;
  letter-spacing: -0.025em;
  color: #ffffff;
}

.flagship-banner p {
  color: #cbd5e1;
  font-size: 1rem;
  line-height: 1.65;
}

.flagship-stat-chip {
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--als-radius-sm);
  padding: 0.85rem 1.2rem;
  backdrop-filter: blur(10px);
}

.flagship-stat-chip b {
  color: #34d399;
  font-size: 1.15rem;
  display: block;
}

.flagship-stat-chip span {
  color: #94a3b8;
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* Clientele Section Upgrades */
.client-logo-card {
  background: #ffffff;
  border: 1px solid var(--als-border);
  border-radius: var(--als-radius-sm);
  padding: 0.75rem;
  display: flex;
  align-items: center;
  justify-content: center;
  height: 78px;
  transition: all 0.25s ease;
}

.client-logo-card img {
  max-height: 54px;
  max-width: 100%;
  object-fit: contain;
  filter: grayscale(1);
  opacity: 0.65;
  transition: all 0.25s ease;
}

.client-logo-card:hover {
  transform: translateY(-3px);
  border-color: rgba(15, 118, 110, 0.35);
  box-shadow: 0 8px 16px rgba(15, 118, 110, 0.08);
}

.client-logo-card:hover img {
  filter: grayscale(0);
  opacity: 1;
}

.client-toggle-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1.75rem;
  border-radius: 50px;
  font-weight: 600;
  font-size: 0.92rem;
  color: var(--als-primary);
  background: #ffffff;
  border: 1px solid rgba(15, 118, 110, 0.3);
  box-shadow: var(--als-shadow-sm);
  transition: all 0.2s ease;
  cursor: pointer;
}

.client-toggle-btn:hover {
  background: var(--als-primary-soft);
  border-color: var(--als-primary);
  transform: translateY(-1px);
}

/* Contact Section & Interactive Form */
.contact-card {
  background: #ffffff;
  border: 1px solid var(--als-border);
  border-radius: var(--als-radius-lg);
  padding: 2.25rem;
  box-shadow: var(--als-shadow-md);
}

.topic-selector {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin-bottom: 1.25rem;
}

.topic-pill {
  font-size: 0.78rem;
  font-weight: 600;
  padding: 0.4rem 0.85rem;
  border-radius: 50px;
  border: 1px solid var(--als-border);
  background: #f8fafc;
  color: var(--als-slate);
  cursor: pointer;
  transition: all 0.2s ease;
  user-select: none;
}

.topic-pill:hover, .topic-pill.active {
  background: var(--als-primary);
  color: #ffffff;
  border-color: var(--als-primary);
}

.form-control {
  border-radius: var(--als-radius-sm);
  border: 1px solid var(--als-border);
  padding: 0.75rem 1rem;
  font-size: 0.92rem;
  transition: all 0.2s ease;
}

.form-control:focus {
  border-color: var(--als-primary);
  box-shadow: 0 0 0 3px rgba(15, 118, 110, 0.15);
}

.btn-primary-action {
  background: linear-gradient(135deg, var(--als-primary), #0d9488);
  border: none;
  color: #ffffff;
  font-weight: 650;
  padding: 0.8rem 1.8rem;
  border-radius: var(--als-radius-sm);
  box-shadow: 0 4px 14px rgba(15, 118, 110, 0.25);
  transition: all 0.2s ease;
}

.btn-primary-action:hover {
  transform: translateY(-1px);
  box-shadow: 0 8px 20px rgba(15, 118, 110, 0.35);
  color: #ffffff;
}

/* Back to Top Floating Button */
.back-to-top {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: #ffffff;
  border: 1px solid var(--als-border);
  color: var(--als-primary);
  box-shadow: 0 8px 20px rgba(15, 23, 42, 0.12);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transition: all 0.3s ease;
  z-index: 999;
}

.back-to-top.show {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.back-to-top:hover {
  background: var(--als-primary);
  color: #ffffff;
  transform: translateY(-3px);
  box-shadow: 0 12px 24px rgba(15, 118, 110, 0.3);
}

/* Smooth Entrance Fade Animations */
.fade-in-up {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s cubic-bezier(0.16, 1, 0.3, 1), transform 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

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