/* ==========================================================================
   LUTUS PAIN CLINIC - AUTHENTIC CLINIC DESIGN SYSTEM
   Theme: Crisp Clean Medical Light Theme with Official Brand Colors
   Primary Brand Blue: #2b7bb9 | Lotus Teal: #176c72 | Heading Text: #101517
   Typography: Montserrat (Exact Official Site Font)
   ========================================================================== */

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

:root {
  /* Official Clinic Brand Colors */
  --brand-blue: #2b7bb9;
  --brand-blue-hover: #1f6497;
  --brand-blue-light: #eaf3fa;
  --brand-teal: #176c72;
  --brand-teal-hover: #105257;
  --brand-teal-light: #e8f5f6;

  /* Surfaces & Foundational Background Pillars: Deep Spruce, White, Muted Teal */
  --bg-body: #ffffff;
  --bg-alt: #f8fafc;
  --bg-subtle: #f1f5f9;
  --bg-card: #ffffff;
  --bg-footer: #eaf5f0;
  --bg-footer-dark: #ddf0e5;

  /* Three Core Website Background Colors: Light Green, White, and Muted Teal */
  --bg-light-green: #eef7f2;
  --bg-light-green-soft: #f5fbf7;
  --bg-light-green-deep: #e2f2e9;
  --bg-light-green-border: #c2e8d5;
  --bg-light-green-gradient: linear-gradient(150deg, #f5fcf8 0%, #ebf7f1 50%, #ddf0e5 100%);

  --bg-dark: var(--bg-light-green);
  --bg-dark-deep: var(--bg-light-green-deep);
  --bg-dark-light: var(--bg-light-green-soft);
  --bg-dark-gradient: var(--bg-light-green-gradient);
  --bg-navy: var(--bg-dark);
  --bg-navy-deep: var(--bg-dark-deep);
  --bg-navy-gradient: var(--bg-dark-gradient);

  --bg-white: #ffffff;
  --bg-white-soft: #fcfdfe;

  --bg-muted-teal: #edf6f7;
  --bg-muted-teal-soft: #f3f9fa;
  --bg-muted-teal-border: #cde4e6;
  --bg-muted-teal-gradient: linear-gradient(180deg, #edf6f7 0%, #e2eff1 100%);

  /* Subtle Light Green Accents (Vitality & Healing) */
  --light-green: #10b981;
  --light-green-glow: #4ade80;
  --light-green-soft: #ecfdf5;
  --light-green-border: #a7f3d0;
  --light-green-text: #065f46;

  /* Typography Colors */
  --text-dark: #101517;
  --text-heading: #101517;
  --text-body: #334155;
  --text-muted: #475569;
  --text-light: #ffffff;

  /* Borders & Dividers */
  --border-light: #e2e8f0;
  --border-subtle: #f1f5f9;
  --border-blue: rgba(43, 123, 185, 0.3);
  --border-teal: rgba(23, 108, 114, 0.3);

  /* Shadows */
  --shadow-subtle: 0 2px 10px rgba(16, 21, 23, 0.04);
  --shadow-card: 0 8px 30px rgba(16, 21, 23, 0.07);
  --shadow-hover: 0 14px 40px rgba(43, 123, 185, 0.14);
  --shadow-btn: 0 4px 14px rgba(43, 123, 185, 0.25);

  /* Typography */
  --font-main: 'Montserrat', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;

  /* Layout */
  --max-width: 1240px;
  --header-height: 86px;
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-full: 9999px;
  --transition: 0.25s ease-in-out;
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
  overflow-x: hidden;
  max-width: 100vw;
  width: 100%;
}

body {
  font-family: var(--font-main);
  background-color: var(--bg-body);
  color: var(--text-body);
  line-height: 1.65;
  overflow-x: hidden;
  max-width: 100vw;
  width: 100%;
  position: relative;
  -webkit-font-smoothing: antialiased;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

a {
  color: inherit;
  text-decoration: none;
  transition: all var(--transition);
}

button, input, select, textarea {
  font-family: var(--font-main);
  font-size: inherit;
}

/* Typography Hierarchy */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-main);
  font-weight: 700;
  line-height: 1.25;
  color: var(--text-heading);
  letter-spacing: -0.015em;
}

h1 { font-size: clamp(2.2rem, 4.5vw, 3.4rem); font-weight: 800; }
h2 { font-size: clamp(1.8rem, 3.2vw, 2.5rem); font-weight: 700; }
h3 { font-size: clamp(1.3rem, 2vw, 1.65rem); font-weight: 700; }
h4 { font-size: 1.15rem; font-weight: 600; }
p { color: var(--text-body); font-size: 1.02rem; }

.text-blue { color: var(--brand-blue); }
.text-teal { color: var(--brand-teal); }
.text-gradient { color: var(--brand-blue); display: inline-block; }
.text-gradient-brand { color: var(--brand-teal); display: inline-block; }

/* Container */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin-left: auto;
  margin-right: auto;
  padding-left: 1.5rem;
  padding-right: 1.5rem;
}

/* Top Information Strip */
.top-notice-bar {
  background: #e6f6ee;
  border-bottom: 1px solid #c4ebd6;
  padding: 0.55rem 1rem;
  font-size: 0.85rem;
  color: #134e4a;
}

.top-notice-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
}

.top-notice-item {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
}

.top-notice-item svg {
  color: #059669;
  width: 15px;
  height: 15px;
  flex-shrink: 0;
}

.top-notice-item a {
  color: #047857;
  font-weight: 700;
}

.top-notice-item a:hover {
  text-decoration: underline;
  color: #065f46;
}

/* Main Site Header */
.site-header {
  position: sticky;
  top: 0;
  left: 0;
  width: 100%;
  height: var(--header-height);
  background: #ffffff;
  border-bottom: 1px solid var(--border-light);
  z-index: 100;
  transition: box-shadow var(--transition);
}

.site-header.scrolled {
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  text-decoration: none;
}

.brand-logo img {
  height: 52px;
  width: auto;
  object-fit: contain;
}

.brand-title-wrap {
  display: flex;
  flex-direction: column;
}

.brand-title {
  font-size: 1.35rem;
  font-weight: 800;
  color: var(--text-heading);
  letter-spacing: -0.01em;
  line-height: 1.1;
}

.brand-sub {
  font-size: 0.72rem;
  font-weight: 700;
  color: var(--brand-teal);
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.desktop-nav {
  display: flex;
  align-items: center;
  gap: 2rem;
  list-style: none;
}

.nav-link {
  font-size: 0.95rem;
  font-weight: 600;
  color: #334155;
  position: relative;
  padding: 0.5rem 0;
}

.nav-link:hover, .nav-link.active {
  color: var(--brand-blue);
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--brand-blue);
  border-radius: 2px;
  transition: width var(--transition);
}

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

.nav-cta-group {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.header-phone-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.55rem 1rem;
  border-radius: var(--radius-full);
  background: var(--brand-blue-light);
  border: 1px solid rgba(43, 123, 185, 0.2);
  color: var(--brand-blue);
  font-size: 0.88rem;
  font-weight: 700;
}

.header-phone-btn:hover {
  background: var(--brand-blue);
  color: #ffffff;
}

.mobile-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--text-heading);
  cursor: pointer;
  padding: 0.5rem;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.8rem 1.6rem;
  border-radius: var(--radius-sm);
  font-size: 0.95rem;
  font-weight: 700;
  cursor: pointer;
  border: 1px solid transparent;
  transition: all var(--transition);
  text-decoration: none;
  line-height: 1.2;
}

.btn-primary {
  background-color: var(--brand-blue);
  color: #ffffff;
  box-shadow: var(--shadow-btn);
}

.btn-primary:hover {
  background-color: var(--brand-blue-hover);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(43, 123, 185, 0.35);
  color: #ffffff;
}

.btn-teal {
  background-color: var(--brand-teal);
  color: #ffffff;
  box-shadow: 0 4px 14px rgba(23, 108, 114, 0.25);
}

.btn-teal:hover {
  background-color: var(--brand-teal-hover);
  transform: translateY(-2px);
  color: #ffffff;
}

.btn-secondary {
  background-color: #ffffff;
  color: var(--brand-blue);
  border: 1px solid var(--border-light);
}

.btn-secondary:hover {
  background-color: var(--brand-blue-light);
  border-color: var(--brand-blue);
  transform: translateY(-2px);
}

.btn-outline {
  background-color: transparent;
  color: var(--text-heading);
  border: 1px solid var(--border-light);
}

.btn-outline:hover {
  background-color: var(--bg-alt);
  border-color: #cbd5e1;
}

/* Badges & Chips */
.badge-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.35rem 0.9rem;
  border-radius: var(--radius-full);
  background: var(--brand-blue-light);
  border: 1px solid rgba(43, 123, 185, 0.25);
  color: var(--brand-blue);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  text-transform: uppercase;
}

.badge-teal {
  background: var(--brand-teal-light);
  border-color: rgba(23, 108, 114, 0.25);
  color: var(--brand-teal);
}

.pulse-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--brand-blue);
}

/* Sections */
.section {
  padding: 5.5rem 0;
  position: relative;
}

.section-alt {
  background-color: var(--bg-alt);
  border-top: 1px solid var(--border-light);
  border-bottom: 1px solid var(--border-light);
}

/* 1. Light Green Background Section */
.section-navy,
.section-dark,
.section-light-green {
  background: var(--bg-light-green-gradient);
  color: #1e3a38;
  border-top: 1px solid var(--bg-light-green-border);
  border-bottom: 1px solid var(--bg-light-green-border);
}

.section-navy h1,
.section-navy h2,
.section-navy h3,
.section-dark h1,
.section-dark h2,
.section-dark h3,
.section-light-green h1,
.section-light-green h2,
.section-light-green h3 {
  color: #0c2d2a;
}

.section-navy p,
.section-navy .section-header p,
.section-dark p,
.section-dark .section-header p,
.section-light-green p,
.section-light-green .section-header p {
  color: #244643;
}

.section-navy .badge-pill,
.section-dark .badge-pill,
.section-light-green .badge-pill {
  background: #d1fae5;
  border: 1px solid #86efac;
  color: #065f46;
}

.section-navy .navigator-container,
.section-dark .navigator-container,
.section-light-green .navigator-container {
  background: #ffffff;
  border: 1px solid #cde7dc;
  box-shadow: 0 10px 30px rgba(12, 45, 42, 0.08);
  color: #1e3a38;
}

.section-navy .footer-contact-item svg,
.section-dark .footer-contact-item svg {
  color: #059669;
}

.section-navy .accessibility-notice,
.section-dark .accessibility-notice {
  background: #f0fdf4;
  border-left: 4px solid #10b981;
  color: #166534;
}

/* 2. White Background Section */
.section-white {
  background-color: var(--bg-white);
  color: var(--text-body);
}

.section-white h2,
.section-white h3 {
  color: var(--text-heading);
}

/* 3. Muted Teal Background Section */
.section-muted-teal {
  background: var(--bg-muted-teal-gradient);
  color: var(--text-body);
  border-top: 1px solid var(--bg-muted-teal-border);
  border-bottom: 1px solid var(--bg-muted-teal-border);
}

.section-muted-teal h2,
.section-muted-teal h3 {
  color: #0b1a2e;
}

.section-muted-teal .section-header p {
  color: #334155;
}

.section-muted-teal .badge-pill {
  background: #d8ecee;
  border: 1px solid rgba(23, 108, 114, 0.28);
  color: var(--brand-teal);
}

.section-muted-teal .clinician-card,
.section-muted-teal .faq-item {
  background: #ffffff;
  border: 1px solid #d5e8ea;
  box-shadow: 0 8px 25px rgba(23, 108, 114, 0.07);
}

/* Universal Page Banner with Light Green Background */
.page-banner-navy,
.page-banner-dark,
.page-banner-light-green {
  padding: 5rem 0 3.8rem 0;
  background: var(--bg-light-green-gradient);
  border-bottom: 1px solid var(--bg-light-green-border);
  color: #244643;
}

.page-banner-navy h1,
.page-banner-dark h1,
.page-banner-light-green h1 {
  color: #0c2d2a;
}

.page-banner-navy p,
.page-banner-dark p,
.page-banner-light-green p {
  color: #244643;
}

.page-banner-navy .badge-pill,
.page-banner-dark .badge-pill,
.page-banner-light-green .badge-pill {
  background: #d1fae5;
  border: 1px solid #86efac;
  color: #065f46;
}

/* Subtle Light Green Accents across Clinical Components */
.pulse-dot {
  background: var(--light-green-glow);
  box-shadow: 0 0 10px var(--light-green-glow);
}

.pricing-savings-badge {
  background: var(--light-green-soft) !important;
  color: var(--light-green-text) !important;
  border: 1px solid var(--light-green-border) !important;
  font-weight: 700;
}

.pricing-feature-item svg,
.treatment-feature-item svg {
  color: var(--light-green) !important;
}

.process-step-number {
  color: var(--light-green-text) !important;
  background: var(--light-green-soft) !important;
  border: 1.5px solid var(--light-green-border) !important;
}

.scroll-tag {
  background: #f0fdf4 !important;
  color: #166534 !important;
  border: 1px solid #bbf7d0 !important;
}

.section-header {
  text-align: center;
  max-width: 760px;
  margin: 0 auto 3.5rem auto;
}

.section-header .badge-pill {
  margin-bottom: 1rem;
}

.section-header h2 {
  margin-bottom: 0.85rem;
}

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

/* Footer (Light Botanical Sage Style) */
.site-footer {
  background-color: var(--bg-footer);
  color: #334155;
  padding: 5rem 0 2rem 0;
  border-top: 1px solid #cbe8db;
}

.site-footer p {
  color: #475569;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1.2fr 1.4fr;
  gap: 3rem;
  margin-bottom: 3.5rem;
}

.footer-brand .brand-logo img {
  filter: none;
}

.footer-brand .brand-title {
  color: #0c2d2a;
}

.footer-brand .brand-sub {
  color: #0d9488;
}

.footer-heading {
  font-size: 1.05rem;
  color: #0c2d2a;
  margin-bottom: 1.25rem;
  font-weight: 700;
}

.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.footer-links a {
  color: #475569;
  font-size: 0.92rem;
}

.footer-links a:hover {
  color: #059669;
  padding-left: 4px;
}

.footer-contact-item {
  display: flex;
  gap: 0.75rem;
  margin-bottom: 0.95rem;
  font-size: 0.92rem;
  color: #334155;
}

.footer-contact-item svg {
  flex-shrink: 0;
  width: 17px;
  height: 17px;
  color: #059669;
  margin-top: 3px;
}

.footer-trust-badges {
  display: flex;
  gap: 0.6rem;
  flex-wrap: wrap;
  margin-top: 1.25rem;
}

.trust-badge {
  font-size: 0.75rem;
  font-weight: 700;
  padding: 0.3rem 0.6rem;
  background: #ffffff;
  border: 1px solid #cbe8db;
  border-radius: var(--radius-sm);
  color: #0c2d2a;
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.04);
}

.footer-bottom {
  border-top: 1px solid #d5ece2;
  padding-top: 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
  font-size: 0.85rem;
  color: #64748b;
}

.footer-legal-links {
  display: flex;
  gap: 1.5rem;
}

.footer-legal-links a {
  color: #64748b;
}

.footer-legal-links a:hover {
  color: #059669;
}

/* Mobile Sticky Bar */
.mobile-sticky-bar {
  display: none;
  position: fixed;
  bottom: 0;
  left: 0;
  width: 100%;
  background: #ffffff;
  box-shadow: 0 -4px 20px rgba(0, 0, 0, 0.12);
  border-top: 1px solid var(--border-light);
  padding: 0.75rem 1rem;
  z-index: 99;
  justify-content: space-between;
  gap: 0.75rem;
}

.mobile-sticky-bar a {
  flex: 1;
  text-align: center;
  font-size: 0.85rem;
  padding: 0.7rem 0.5rem;
}

/* Responsive */
@media (max-width: 1024px) {
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 2.5rem;
  }
}

@media (max-width: 860px) {
  :root {
    --header-height: 68px;
  }

  .top-notice-bar {
    display: none;
  }

  .site-header .container {
    padding-left: 0.85rem;
    padding-right: 0.85rem;
  }

  .site-header nav {
    display: contents;
  }

  .brand-logo {
    gap: 0.55rem;
    flex-shrink: 0;
  }

  .brand-logo img {
    height: 38px;
    width: auto;
  }

  .brand-title {
    font-size: 1.15rem;
    line-height: 1.1;
  }

  .brand-sub {
    font-size: 0.58rem;
    letter-spacing: 0.06em;
  }

  .site-header .nav-cta-group {
    display: flex;
    align-items: center;
    gap: 0.45rem;
    margin-left: auto;
    flex-shrink: 0;
  }

  /* Compact Book Now button on mobile to prevent overlapping hamburger */
  .site-header .btn-primary,
  .nav-cta-group .btn-primary {
    padding: 0.42rem 0.72rem !important;
    font-size: 0.78rem !important;
    font-weight: 700 !important;
    gap: 0.25rem !important;
    flex-shrink: 0 !important;
    white-space: nowrap !important;
    border-radius: var(--radius-sm) !important;
    box-shadow: 0 2px 8px rgba(43, 123, 185, 0.22) !important;
    height: 34px !important;
    line-height: 1 !important;
  }

  .site-header .btn-primary svg,
  .nav-cta-group .btn-primary svg {
    display: none !important;
  }

  .site-header .header-phone-btn,
  .nav-cta-group .header-phone-btn {
    display: none !important;
  }

  .mobile-toggle {
    display: flex !important;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    padding: 0;
    border-radius: var(--radius-sm);
    background: #f1f5f9;
    color: var(--text-heading);
    flex-shrink: 0 !important;
    border: 1px solid var(--border-light);
    cursor: pointer;
    transition: background var(--transition);
  }

  .mobile-toggle:hover {
    background: #e2e8f0;
  }

  .desktop-nav {
    position: fixed;
    top: var(--header-height);
    left: 0;
    width: 100%;
    height: calc(100vh - var(--header-height));
    background: #ffffff;
    border-top: 1px solid var(--border-light);
    flex-direction: column;
    align-items: flex-start;
    padding: 2.5rem 2rem;
    gap: 1.5rem;
    transform: translateY(-100%);
    opacity: 0;
    pointer-events: none;
    transition: all var(--transition);
    overflow-y: auto;
  }

  .desktop-nav.open {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
  }

  .nav-link {
    font-size: 1.25rem;
    font-weight: 700;
  }

  .mobile-sticky-bar {
    display: flex;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 2.5rem;
  }

  .section {
    padding: 4rem 0;
  }
}

@media (max-width: 540px) {
  .brand-title {
    font-size: 1.1rem;
  }

  .brand-sub {
    display: none;
  }

  .site-header .nav-cta-group {
    gap: 0.4rem;
  }

  .site-header .btn-primary,
  .nav-cta-group .btn-primary {
    padding: 0.38rem 0.65rem !important;
    font-size: 0.75rem !important;
    height: 32px !important;
  }

  .mobile-toggle {
    width: 34px !important;
    height: 34px !important;
  }
}

/* ==========================================================================
   SCROLL FLOW REVEAL SYSTEM
   Graceful, fluid section entrance transitions as the user scrolls
   ========================================================================== */
.flow-section {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.85s cubic-bezier(0.16, 1, 0.3, 1), transform 0.85s cubic-bezier(0.16, 1, 0.3, 1);
  will-change: opacity, transform;
}

.flow-section.flow-active {
  opacity: 1;
  transform: translateY(0);
}

/* Staggered flow entrance for grid cards and steps */
.flow-stagger > * {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity 0.75s cubic-bezier(0.16, 1, 0.3, 1), transform 0.75s cubic-bezier(0.16, 1, 0.3, 1), box-shadow 0.3s ease, border-color 0.3s ease;
}

.flow-section.flow-active .flow-stagger > *:nth-child(1) { transition-delay: 0.06s; }
.flow-section.flow-active .flow-stagger > *:nth-child(2) { transition-delay: 0.14s; }
.flow-section.flow-active .flow-stagger > *:nth-child(3) { transition-delay: 0.22s; }
.flow-section.flow-active .flow-stagger > *:nth-child(4) { transition-delay: 0.30s; }
.flow-section.flow-active .flow-stagger > *:nth-child(5) { transition-delay: 0.38s; }
.flow-section.flow-active .flow-stagger > *:nth-child(6) { transition-delay: 0.46s; }

.flow-section.flow-active .flow-stagger > * {
  opacity: 1;
  transform: translateY(0);
}

/* Hero Section and Page Banners gentle load flow */
.hero-section,
.page-banner-navy,
.page-banner-dark,
.page-banner-light-green {
  animation: pageHeroFlowIn 0.85s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

@keyframes pageHeroFlowIn {
  from {
    opacity: 0.35;
    transform: translateY(16px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Reduced motion accessibility */
@media (prefers-reduced-motion: reduce) {
  .flow-section,
  .flow-stagger > *,
  .hero-section,
  .page-banner-navy,
  .page-banner-dark,
  .page-banner-light-green {
    opacity: 1 !important;
    transform: none !important;
    transition: none !important;
    animation: none !important;
  }
}