/* ============================
   Custom Properties
   ============================ */
:root {
  --col-primary: #38bdf8;
  --col-primary-dark: #0ea5e9;
  --col-primary-glow: rgba(56, 189, 248, 0.2);
  --col-accent: #a78bfa;
  --col-accent-glow: rgba(167, 139, 250, 0.2);
  --col-bg: #0a0f1e;
  --col-bg-2: #111827;
  --col-bg-3: #1f2937;
  --col-bg-card: rgba(255, 255, 255, 0.03);
  --col-text: #f1f5f9;
  --col-muted: #94a3b8;
  --col-border: rgba(255, 255, 255, 0.07);
  --col-success: #34d399;
  --radius-lg: 16px;
  --radius-md: 10px;
  --transition: 0.2s ease;
}

/* ============================
   Base
   ============================ */
html {
  font-size: 16px;
  scroll-behavior: smooth;
}

body {
  background-color: var(--col-bg);
  color: var(--col-text);
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  line-height: 1.6;
}

/* ============================
   Typography
   ============================ */
.gradient-text {
  background: linear-gradient(135deg, var(--col-primary), var(--col-accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.section-eyebrow {
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--col-primary);
  margin-bottom: 0.75rem;
  display: block;
}

.section-title {
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.02em;
  color: var(--col-text);
}

.section-subtitle {
  font-size: 1.1rem;
  color: var(--col-muted);
  max-width: 600px;
}

/* ============================
   Navbar
   ============================ */
.ol-navbar {
  background: rgba(10, 15, 30, 0.92);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--col-border);
  padding: 0.875rem 0;
}

.ol-brand {
  font-weight: 800;
  font-size: 1.35rem;
  letter-spacing: -0.04em;
  color: var(--col-text) !important;
  text-decoration: none !important;
}

.ol-brand .brand-accent {
  background: linear-gradient(135deg, var(--col-primary), var(--col-accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.ol-navbar .nav-link {
  color: var(--col-muted) !important;
  font-weight: 500;
  font-size: 0.9rem;
  padding: 0.5rem 0.75rem !important;
  border-radius: var(--radius-md);
  transition: color var(--transition), background var(--transition);
}

.ol-navbar .nav-link:hover {
  color: var(--col-text) !important;
  background: rgba(255, 255, 255, 0.05);
}

/* ============================
   Buttons
   ============================ */
.btn-primary-ol {
  background: linear-gradient(135deg, var(--col-primary-dark), var(--col-accent));
  border: none;
  color: #fff !important;
  font-weight: 600;
  font-size: 0.9rem;
  padding: 0.6rem 1.25rem;
  border-radius: var(--radius-md);
  text-decoration: none !important;
  display: inline-block;
  transition: opacity var(--transition), transform var(--transition), box-shadow var(--transition);
  cursor: pointer;
  line-height: 1.5;
}

.btn-primary-ol:hover {
  opacity: 0.9;
  transform: translateY(-1px);
  box-shadow: 0 8px 25px var(--col-primary-glow);
}

.btn-primary-ol.btn-lg-ol {
  padding: 0.875rem 2rem;
  font-size: 1rem;
  border-radius: 12px;
}

.btn-primary-ol.btn-sm-ol {
  padding: 0.4rem 1rem;
  font-size: 0.825rem;
}

.btn-outline-ol {
  background: transparent;
  border: 1px solid var(--col-border);
  color: var(--col-text) !important;
  font-weight: 600;
  font-size: 0.9rem;
  padding: 0.6rem 1.25rem;
  border-radius: var(--radius-md);
  text-decoration: none !important;
  display: inline-block;
  transition: background var(--transition), border-color var(--transition), transform var(--transition);
  line-height: 1.5;
}

.btn-outline-ol:hover {
  background: rgba(255, 255, 255, 0.05);
  border-color: rgba(255, 255, 255, 0.2);
  transform: translateY(-1px);
}

.btn-outline-ol.btn-lg-ol {
  padding: 0.875rem 2rem;
  font-size: 1rem;
  border-radius: 12px;
}

/* ============================
   Hero
   ============================ */
.hero {
  min-height: 100vh;
  position: relative;
  overflow: hidden;
  display: flex;
  align-items: center;
  padding: 7rem 0 4rem;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 80% 60% at 20% 50%, rgba(56, 189, 248, 0.08) 0%, transparent 70%),
    radial-gradient(ellipse 60% 60% at 80% 20%, rgba(167, 139, 250, 0.08) 0%, transparent 70%),
    radial-gradient(ellipse 40% 40% at 60% 85%, rgba(56, 189, 248, 0.04) 0%, transparent 70%),
    var(--col-bg);
}

.hero-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.025) 1px, transparent 1px);
  background-size: 60px 60px;
  -webkit-mask-image: radial-gradient(ellipse 80% 80% at 50% 50%, black, transparent);
  mask-image: radial-gradient(ellipse 80% 80% at 50% 50%, black, transparent);
}

.hero-content {
  position: relative;
  z-index: 1;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: rgba(56, 189, 248, 0.1);
  border: 1px solid rgba(56, 189, 248, 0.25);
  border-radius: 999px;
  padding: 0.375rem 1rem;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--col-primary);
  margin-bottom: 1.5rem;
}

.hero-title {
  font-size: clamp(2.5rem, 7vw, 5rem);
  font-weight: 900;
  line-height: 1.05;
  letter-spacing: -0.03em;
  color: var(--col-text);
  margin-bottom: 1.5rem;
}

.hero-title .line-accent {
  background: linear-gradient(135deg, var(--col-primary), var(--col-accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: 1.2rem;
  color: var(--col-muted);
  line-height: 1.7;
  max-width: 560px;
  margin-bottom: 2.5rem;
}

.hero-cta-group {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-bottom: 3rem;
}

.hero-stats {
  display: flex;
  flex-wrap: wrap;
  gap: 2.5rem;
  padding-top: 2rem;
  border-top: 1px solid var(--col-border);
}

.hero-stat-value {
  font-size: 1.75rem;
  font-weight: 800;
  background: linear-gradient(135deg, var(--col-primary), var(--col-accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1;
  margin-bottom: 0.3rem;
}

.hero-stat-label {
  font-size: 0.8rem;
  color: var(--col-muted);
  font-weight: 500;
  line-height: 1.3;
}

/* ============================
   Image Placeholders
   ============================ */
.img-placeholder {
  background: linear-gradient(135deg, var(--col-bg-2), var(--col-bg-3));
  border: 2px dashed rgba(255, 255, 255, 0.12);
  border-radius: var(--radius-lg);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 320px;
  color: var(--col-muted);
  font-size: 0.875rem;
  text-align: center;
  padding: 2rem;
  gap: 0.5rem;
}

.img-placeholder i {
  font-size: 2.5rem;
  opacity: 0.35;
  margin-bottom: 0.5rem;
}

/* ============================
   Effort Chart
   ============================ */
.effort-chart-wrap {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.effort-chart-wrap canvas {
  max-width: 320px;
  width: 100%;
  height: auto;
  cursor: pointer;
  filter: drop-shadow(0 0 18px rgba(56, 189, 248, 0.18));
}

.effort-chart-legend {
  width: 100%;
  max-width: 350px;
}

.effort-legend-item {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  color: var(--col-muted);
  font-size: 0.9rem;
}

.effort-legend-item strong {
  color: var(--col-text);
}

.effort-legend-dot {
  display: inline-block;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  flex-shrink: 0;
}

/* ============================
   Sections
   ============================ */
.section {
  padding: 5rem 0;
}

.section-alt {
  background: var(--col-bg-2);
}

/* ============================
   Feature / Service Cards
   ============================ */
.feature-card {
  background: var(--col-bg-card);
  border: 1px solid var(--col-border);
  border-radius: var(--radius-lg);
  padding: 2rem;
  height: 100%;
  transition: transform var(--transition), border-color var(--transition), box-shadow var(--transition);
}

.feature-card:hover {
  transform: translateY(-4px);
  border-color: rgba(56, 189, 248, 0.25);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4), 0 0 0 1px rgba(56, 189, 248, 0.08);
}

.feature-icon {
  width: 52px;
  height: 52px;
  border-radius: 12px;
  background: linear-gradient(135deg, rgba(56, 189, 248, 0.15), rgba(167, 139, 250, 0.15));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  margin-bottom: 1.25rem;
  color: var(--col-primary);
  flex-shrink: 0;
}

.feature-card h3 {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--col-text);
  margin-bottom: 0.75rem;
}

.feature-card p {
  font-size: 0.925rem;
  color: var(--col-muted);
  line-height: 1.65;
  margin-bottom: 0;
}

/* ============================
   Steps
   ============================ */
.step-card {
  position: relative;
  padding-left: 4rem;
}

.step-number {
  position: absolute;
  left: 0;
  top: 0;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--col-primary-dark), var(--col-accent));
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 1rem;
  color: #fff;
  flex-shrink: 0;
}

.step-card h3 {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--col-text);
  margin-bottom: 0.5rem;
}

.step-card p {
  color: var(--col-muted);
  font-size: 0.925rem;
  line-height: 1.65;
  margin-bottom: 0;
}

/* ============================
   Problem Cards
   ============================ */
.problem-card {
  background: var(--col-bg-card);
  border: 1px solid var(--col-border);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
  height: 100%;
}

.problem-card .problem-icon {
  font-size: 2rem;
  margin-bottom: 1rem;
  display: block;
}

.problem-card h3 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--col-problem-heading, #fca5a5);
  margin-bottom: 0.5rem;
}

.problem-card p {
  font-size: 0.9rem;
  color: var(--col-muted);
  line-height: 1.65;
  margin-bottom: 0;
}

/* ============================
   CTA Band
   ============================ */
.cta-band {
  background: linear-gradient(135deg, rgba(14, 165, 233, 0.1), rgba(139, 92, 246, 0.1));
  border-top: 1px solid var(--col-border);
  border-bottom: 1px solid var(--col-border);
  padding: 5rem 0;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.cta-band::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 60% 80% at 50% 50%, rgba(56, 189, 248, 0.05), transparent);
  pointer-events: none;
}

/* ============================
   Contact Form
   ============================ */
.contact-form-card {
  background: var(--col-bg-2);
  border: 1px solid var(--col-border);
  border-radius: var(--radius-lg);
  padding: 2.5rem;
}

.form-control-ol {
  background: var(--col-bg-3) !important;
  border: 1px solid var(--col-border) !important;
  border-radius: var(--radius-md) !important;
  color: var(--col-text) !important;
  padding: 0.75rem 1rem !important;
  font-size: 0.925rem !important;
  transition: border-color var(--transition), box-shadow var(--transition) !important;
}

.form-control-ol:focus {
  border-color: var(--col-primary) !important;
  box-shadow: 0 0 0 3px var(--col-primary-glow) !important;
  outline: none !important;
}

.form-control-ol::placeholder {
  color: var(--col-muted) !important;
  opacity: 0.7;
}

.form-label-ol {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--col-text);
  margin-bottom: 0.5rem;
  display: block;
}

.alert-success-ol {
  background: rgba(52, 211, 153, 0.1);
  border: 1px solid rgba(52, 211, 153, 0.3);
  border-radius: var(--radius-md);
  color: var(--col-success);
  padding: 1rem 1.25rem;
  font-size: 0.9rem;
  font-weight: 500;
}

/* ============================
   Service Hero
   ============================ */
.service-hero {
  padding: 6rem 0 4rem;
  background:
    radial-gradient(ellipse 80% 60% at 30% 50%, rgba(56, 189, 248, 0.07) 0%, transparent 70%),
    var(--col-bg);
  border-bottom: 1px solid var(--col-border);
}

/* ============================
   Footer
   ============================ */
.ol-footer {
  background: var(--col-bg-2);
  border-top: 1px solid var(--col-border);
  padding: 4rem 0 2rem;
}

.footer-heading {
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--col-muted);
  margin-bottom: 1rem;
}

.footer-links {
  list-style: none;
  padding: 0;
  margin: 0;
}

.footer-links li {
  margin-bottom: 0.5rem;
}

.footer-links a {
  color: var(--col-muted);
  text-decoration: none;
  font-size: 0.9rem;
  transition: color var(--transition);
}

.footer-links a:hover {
  color: var(--col-text);
}

.footer-divider {
  border-color: var(--col-border);
  margin: 2.5rem 0 1.5rem;
}

/* ============================
   Responsive
   ============================ */
@media (max-width: 768px) {
  .hero {
    padding: 7rem 0 3rem;
    min-height: unset;
  }

  .hero-title {
    font-size: 2.4rem;
  }

  .hero-cta-group {
    flex-direction: column;
  }

  .hero-stats {
    gap: 1.5rem;
  }

  .section {
    padding: 3.5rem 0;
  }

  .contact-form-card {
    padding: 1.5rem;
  }

  .service-hero {
    padding: 4rem 0 3rem;
  }
}


/* ============================
   Hero Particles
   ============================ */
.hero-particles {
  width: 100%;
  height: 420px;
  display: block;
  border-radius: var(--radius-lg);
}

/* ============================
   Theme-dependent images
   ============================ */
.theme-img-light { display: none; }
.theme-img-dark  { display: block; }

[data-theme="light"] .theme-img-light { display: block; }
[data-theme="light"] .theme-img-dark  { display: none; }

/* ============================
   Theme Toggle Button
   ============================ */
.theme-toggle-btn {
  background: transparent;
  border: 1px solid var(--col-border);
  color: var(--col-muted);
  border-radius: var(--radius-md);
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: color var(--transition), border-color var(--transition), background var(--transition);
  font-size: 1rem;
  flex-shrink: 0;
}

.theme-toggle-btn:hover {
  color: var(--col-primary);
  border-color: var(--col-primary);
  background: var(--col-primary-glow);
}

/* ============================
   Light Mode
   ============================ */
[data-theme="light"] {
  --col-bg: #f8fafc;
  --col-bg-2: #f1f5f9;
  --col-bg-3: #e2e8f0;
  --col-bg-card: rgba(0, 0, 0, 0.025);
  --col-text: #0f172a;
  --col-muted: #64748b;
  --col-border: rgba(0, 0, 0, 0.09);
  --col-problem-heading: #dc2626;
}

[data-theme="light"] .ol-navbar {
  background: rgba(248, 250, 252, 0.95);
  box-shadow: 0 1px 0 var(--col-border);
}

[data-theme="light"] .ol-navbar .nav-link:hover {
  background: rgba(0, 0, 0, 0.05);
}

[data-theme="light"] .btn-outline-ol {
  border-color: rgba(0, 0, 0, 0.18);
}

[data-theme="light"] .btn-outline-ol:hover {
  background: rgba(0, 0, 0, 0.05);
  border-color: rgba(0, 0, 0, 0.3);
}

[data-theme="light"] .hero-bg {
  background:
    radial-gradient(ellipse 80% 60% at 20% 50%, rgba(14, 165, 233, 0.1) 0%, transparent 70%),
    radial-gradient(ellipse 60% 60% at 80% 20%, rgba(139, 92, 246, 0.08) 0%, transparent 70%),
    var(--col-bg);
}

[data-theme="light"] .hero-grid {
  background-image:
    linear-gradient(rgba(0, 0, 0, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 0, 0, 0.04) 1px, transparent 1px);
}

[data-theme="light"] .img-placeholder {
  border-color: rgba(0, 0, 0, 0.1);
}

[data-theme="light"] .feature-card:hover {
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.08), 0 0 0 1px rgba(14, 165, 233, 0.15);
}

[data-theme="light"] .service-hero {
  background:
    radial-gradient(ellipse 80% 60% at 30% 50%, rgba(14, 165, 233, 0.08) 0%, transparent 70%),
    var(--col-bg);
}

[data-theme="light"] .cta-band {
  background: linear-gradient(135deg, rgba(14, 165, 233, 0.07), rgba(139, 92, 246, 0.07));
}

.btn:focus, .btn:active:focus, .btn-link.nav-link:focus, .form-control:focus, .form-check-input:focus {
  box-shadow: 0 0 0 0.1rem white, 0 0 0 0.25rem #258cfb;
}

html {
  position: relative;
  min-height: 100%;
}

body {
  margin-bottom: 60px;
}

.form-floating > .form-control-plaintext::placeholder, .form-floating > .form-control::placeholder {
  color: var(--bs-secondary-color);
  text-align: end;
}

.form-floating > .form-control-plaintext:focus::placeholder, .form-floating > .form-control:focus::placeholder {
  text-align: start;
}