/* ==========================================================================
   Style 06 — Modern Minimal
   Rehab Website Factory

   A stark, high-contrast monochromatic design with bold typography as the
   primary design element. Communicates clarity, modernity, and confidence.

   Modernized: CSS Nesting, Container Queries, :has(), clamp(),
   @layer, oklch(), color-mix(), scroll-driven animations,
   view transitions, dark mode
   FIX: Added missing body selector
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Montserrat:wght@400;700;900&family=Inter:wght@400;500;700&display=swap');

/* --------------------------------------------------------------------------
   Cascade Layers
   -------------------------------------------------------------------------- */
@layer theme, base, components, utilities;

/* --------------------------------------------------------------------------
   Custom Properties Override
   -------------------------------------------------------------------------- */
@layer theme {
  :root {
    /* Colors — oklch */
    --color-primary: oklch(0 0 0);
    --color-primary-rgb: 0, 0, 0;
    --color-secondary: oklch(0.30 0 0);
    --color-secondary-rgb: 51, 51, 51;
    --color-accent: oklch(0.55 0.22 260);
    --color-accent-rgb: 0, 102, 255;
    --color-text: oklch(0.10 0 0);
    --color-text-light: #777777;
    --color-text-inverse: oklch(1 0 0);
    --color-bg: oklch(1 0 0);
    --color-bg-alt: oklch(0.98 0 0);
    --color-bg-dark: oklch(0 0 0);
    --color-border: oklch(0.90 0 0);

    /* Typography */
    --font-heading: 'Montserrat', sans-serif;
    --font-body: 'Inter', sans-serif;
    --font-weight-light: 400;
    --font-weight-normal: 400;
    --font-weight-medium: 500;
    --font-weight-semibold: 700;
    --font-weight-bold: 900;

    /* Fluid spacing */
    --space-xs: clamp(0.25rem, 0.5vw, 0.5rem);
    --space-sm: clamp(0.5rem, 1vw, 1rem);
    --space-md: clamp(1rem, 2vw, 2rem);
    --space-lg: clamp(1.5rem, 3vw, 3rem);
    --space-xl: clamp(2rem, 5vw, 5rem);

    /* Border Radius — almost none */
    --radius-sm: 0px;
    --radius-md: 2px;
    --radius-lg: 4px;
    --radius-xl: 4px;

    /* Shadows — none by default */
    --shadow-sm: none;
    --shadow-md: none;
    --shadow-lg: none;
    --shadow-xl: 0 0 0 1px rgba(0, 0, 0, 0.1);

    /* Hero Overlay */
    --hero-overlay: linear-gradient(
      180deg,
      oklch(0 0 0 / 0.7) 0%,
      oklch(0 0 0 / 0.4) 100%
    );

    /* Transitions */
    --transition-fast: 0.1s ease;
    --transition-base: 0.2s ease;
    --transition-slow: 0.4s ease;
  }

  /* --------------------------------------------------------------------------
     Dark Mode — inverted minimal
     -------------------------------------------------------------------------- */
  @media (prefers-color-scheme: dark) {
    :root {
      --color-primary: oklch(1 0 0);
      --color-primary-rgb: 255, 255, 255;
      --color-secondary: oklch(0.75 0 0);
      --color-accent: oklch(0.65 0.22 260);
      --color-text: oklch(0.92 0 0);
      --color-text-light: oklch(0.55 0 0);
      --color-text-inverse: oklch(0 0 0);
      --color-bg: oklch(0.08 0 0);
      --color-bg-alt: oklch(0.12 0 0);
      --color-bg-dark: oklch(0 0 0);
      --color-border: oklch(0.22 0 0);

      --shadow-xl: 0 0 0 1px rgba(255, 255, 255, 0.1);

      --hero-overlay: linear-gradient(
        180deg,
        oklch(0 0 0 / 0.8) 0%,
        oklch(0 0 0 / 0.5) 100%
      );
    }
  }
}

/* --------------------------------------------------------------------------
   Base Styles
   -------------------------------------------------------------------------- */
@layer base {
  /* FIX: Added missing body selector */
  body {
    background-color: var(--color-bg);
    view-transition-name: page-body;
  }

  h1 {
    font-weight: 900;
    letter-spacing: -0.04em;
    text-transform: uppercase;
    line-height: 0.95;
    font-size: clamp(2.5rem, 7vw, 5rem);
  }

  h2 {
    font-weight: 900;
    letter-spacing: -0.03em;
    text-transform: uppercase;
    font-size: clamp(1.75rem, 4vw, 3rem);

    &::after {
      content: '';
      display: block;
      width: clamp(40px, 8vw, 80px);
      height: 3px;
      background: var(--color-primary);
      margin-top: var(--space-xs);
      opacity: 1;
    }
  }

  h3 {
    font-weight: 700;
    letter-spacing: -0.02em;
    font-size: clamp(1.25rem, 2.5vw, 1.75rem);
  }

  h4, h5, h6 {
    font-weight: 700;
    letter-spacing: -0.01em;
  }

  hr {
    border: none;
    border-top: 1px solid var(--color-border);
  }

  ::selection {
    background: var(--color-accent);
    color: var(--color-text-inverse);
  }
}

/* --------------------------------------------------------------------------
   Component Styles
   -------------------------------------------------------------------------- */
@layer components {
  /* Sections */
  .section--alt {
    background-color: var(--color-bg-alt);
    border-top: 1px solid var(--color-border);
    border-bottom: 1px solid var(--color-border);
    container-type: inline-size;
  }

  .cta-section.section--alt {
    background-color: var(--color-primary);
    background-image: none;
    color: var(--color-text-inverse);
  }

  .section--dark {
    background: var(--color-bg-dark);
    color: var(--color-text-inverse);
  }

  /* Cards — container queries + nesting */
  .card,
  .program-card,
  .contact-card,
  .blog-card,
  .nav-card,
  .sidebar-widget {
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    transition: border-color var(--transition-base);
    container-type: inline-size;
    view-transition-name: card;

    &:hover {
      border-color: var(--color-primary);
    }
  }

  @container (max-width: 300px) {
    .card, .program-card, .blog-card {
      padding: var(--space-sm);
    }
  }

  @container (min-width: 500px) {
    .card, .program-card, .blog-card {
      padding: var(--space-md);
    }
  }

  /* :has() contextual styling */
  section:has(.card) {
    padding-block: var(--space-lg);
  }

  .hero:has(video) {
    min-height: 90vh;
  }

  .card:has(img) {
    overflow: hidden;
  }

  /* Buttons — nesting */
  .btn,
  .btn-primary,
  .btn-secondary,
  .btn-outline,
  .btn--phone {
    border-radius: var(--radius-md);
    font-family: var(--font-heading);
    font-weight: 700;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    font-size: clamp(0.75em, 1vw, 0.85em);
    transition: all var(--transition-base);
    padding: clamp(0.5rem, 1.2vw, 0.85rem) clamp(1rem, 2.5vw, 2rem);
  }

  .btn-primary,
  .button--primary {
    background: var(--color-primary);
    color: var(--color-text-inverse);
    border: 2px solid var(--color-primary);

    &:hover {
      background: var(--color-text-inverse);
      color: var(--color-primary);
    }
  }

  .btn-secondary,
  .button--secondary {
    background: transparent;
    color: var(--color-primary);
    border: 2px solid var(--color-primary);

    &:hover {
      background: var(--color-primary);
      color: var(--color-text-inverse);
    }
  }

  .btn-accent,
  .button--accent {
    background: var(--color-accent);
    color: var(--color-text-inverse);
    border: 2px solid var(--color-accent);

    &:hover {
      background: transparent;
      color: var(--color-accent);
    }
  }

  /* Links */
  a {
    color: var(--color-accent);
    text-decoration: none;
    transition: opacity var(--transition-fast);

    &:hover {
      opacity: 0.7;
    }
  }

  /* Navigation — nesting */
  .site-header {
    background: var(--color-bg);
    border-bottom: 1px solid var(--color-border);
    view-transition-name: header;
  }

  .main-nav a, .mega-nav a, .nav-links a, .header-phone {
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: 0.8em;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: #333333 !important;
    opacity: 1 !important;
    transition: color var(--transition-fast);

    &:hover {
      color: #000000 !important;
    }
  }

  .nav-links a[aria-current="page"],
  .main-nav a.active, .mega-nav a.active,
  .nav-item.active > a {
    color: #000000 !important;
  }

  .logo-text {
    color: #000000 !important;
    opacity: 1 !important;
  }

  /* Fullscreen section overlays — dark overlay for text readability */
  .fs-overlay {
    background: rgba(0, 0, 0, 0.65);
  }

  .fs-content {
    color: #ffffff;
    text-shadow: 0 1px 3px rgba(0, 0, 0, 0.4);
  }

  .fs-content h1,
  .fs-content h2,
  .fs-content h3 {
    color: #ffffff;
    text-shadow: 0 2px 6px rgba(0, 0, 0, 0.5);
  }

  .fs-content h2::after {
    background: #ffffff;
  }

  .fs-content p,
  .fs-content li,
  .fs-content cite,
  .fs-content summary,
  .fs-content blockquote {
    color: rgba(255, 255, 255, 0.92);
  }

  .fs-content a:not(.btn) {
    color: #ffffff;
    text-decoration: underline;
    opacity: 0.9;
  }

  .fs-content a:not(.btn):hover {
    opacity: 1;
  }

  /* Buttons on fullscreen sections */
  .fs-content .btn-primary {
    background: #ffffff;
    color: #000000;
    border-color: #ffffff;
  }

  .fs-content .btn-primary:hover {
    background: transparent;
    color: #ffffff;
  }

  .fs-content .btn-secondary {
    background: transparent;
    color: #ffffff;
    border-color: #ffffff;
  }

  .fs-content .btn-secondary:hover {
    background: #ffffff;
    color: #000000;
  }

  /* Grid items, cards, steps on dark background */
  .fs-grid-item,
  .fs-step,
  .fs-contact-item,
  .fs-team-member,
  .fs-feature {
    background: rgba(0, 0, 0, 0.45);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid rgba(255, 255, 255, 0.12);
    border-radius: 8px;
    padding: 2rem 1.75rem;
    text-align: center;
  }

  .fs-contact-item h3,
  .fs-grid-item h3,
  .fs-step h3,
  .fs-team-member h3,
  .fs-feature h3 {
    margin-bottom: 0.5rem;
  }

  .fs-contact-item h3::after,
  .fs-grid-item h3::after,
  .fs-step h3::after,
  .fs-team-member h3::after,
  .fs-feature h3::after {
    display: none;
  }

  .fs-contact-grid {
    gap: 1.5rem;
  }

  .fs-testimonial blockquote {
    border-left-color: #ffffff;
    color: rgba(255, 255, 255, 0.95);
  }

  /* FAQ items on dark background */
  .fs-faq details {
    background: rgba(0, 0, 0, 0.45);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid rgba(255, 255, 255, 0.12);
    border-radius: 8px;
    padding: 1.25rem 1.5rem;
  }

  .fs-faq summary {
    font-weight: 700;
    cursor: pointer;
  }

  /* Blog scroll section — light background (no bg image) */
  .fs-section-scroll {
    background: var(--color-bg);
  }

  .fs-section-scroll .fs-content,
  .fs-section-scroll .fs-content h2,
  .fs-section-scroll .fs-content h3 {
    color: var(--color-text);
    text-shadow: none;
  }

  .fs-section-scroll .fs-content h2::after {
    background: var(--color-primary);
  }

  .fs-section-scroll .fs-content p,
  .fs-section-scroll .fs-content li,
  .fs-section-scroll .fs-content a:not(.btn) {
    color: var(--color-text);
    text-shadow: none;
  }

  /* Blog cards — light background context */
  .fs-blog-grid .blog-card {
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: 8px;
    color: var(--color-text);
    overflow: hidden;
    transition: border-color var(--transition-base), box-shadow var(--transition-base);
  }

  .fs-blog-grid .blog-card:hover {
    border-color: var(--color-primary);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
  }

  .fs-blog-grid .blog-card img {
    filter: none;
    width: 100%;
    height: 200px;
    object-fit: cover;
  }

  .fs-blog-grid .blog-card:hover img {
    filter: none;
  }

  .blog-card-content {
    color: var(--color-text);
    padding: 1.25rem 1.5rem;
  }

  .blog-card-content h3 {
    font-size: 1.15rem;
    margin-bottom: 0.5rem;
  }

  .blog-card-content p {
    font-size: 0.9rem;
    line-height: 1.6;
    color: var(--color-text-light) !important;
    margin-bottom: 1rem;
  }

  .blog-category {
    display: inline-block;
    font-family: var(--font-heading);
    font-size: 0.7em;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--color-text-light);
    margin-bottom: 0.5rem;
  }

  .link-arrow {
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: 0.8em;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--color-primary) !important;
    text-decoration: none !important;
  }

  .link-arrow:hover {
    opacity: 0.7 !important;
  }

  .nav-item.active > a {
    color: var(--color-primary);
  }

  /* Forms — nesting */
  input,
  textarea,
  select {
    border: none;
    border-bottom: 2px solid var(--color-border);
    border-radius: 0;
    font-family: var(--font-body);
    background: transparent;
    color: var(--color-text);
    transition: border-color var(--transition-fast);
    padding: clamp(0.5rem, 1vw, 0.75rem) 0;

    &:focus {
      border-bottom-color: var(--color-primary);
      outline: none;
    }
  }

  label {
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: 0.75em;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--color-text-light);
  }

  /* Footer — nesting */
  .footer,
  footer {
    background: var(--color-bg-dark);
    color: color-mix(in oklch, white 60%, transparent);
    view-transition-name: footer;

    & h3 {
      color: #FFFFFF;
    }

    & a {
      color: color-mix(in oklch, white 50%, transparent);
      transition: color var(--transition-fast);

      &:hover {
        color: var(--color-text-inverse);
        opacity: 1;
      }
    }
  }

  /* Blockquote */
  blockquote,
  .testimonial,
  .testimonials-grid blockquote {
    padding: var(--space-sm) var(--space-md);
    border-left: 4px solid var(--color-primary);
    font-family: var(--font-heading);
    font-weight: 700;
    font-style: normal;
    font-size: clamp(1em, 1.5vw, 1.1em);
    letter-spacing: -0.01em;
    color: var(--color-text);
  }

  /* Badges */
  .badge,
  .tag {
    background: var(--color-primary);
    color: var(--color-text-inverse);
    border-radius: 0;
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: 0.7em;
    text-transform: uppercase;
    letter-spacing: 0.08em;
  }

  /* Monochrome images */
  .card img,
  .program-card img,
  .blog-card img {
    filter: grayscale(100%) contrast(1.1);
    transition: filter var(--transition-base);
  }

  .card:hover img,
  .program-card:hover img,
  .blog-card:hover img {
    filter: grayscale(0%) contrast(1);
  }

  /* Scrollbar */
  ::-webkit-scrollbar {
    background: var(--color-bg);
  }

  ::-webkit-scrollbar-thumb {
    background: var(--color-border);

    &:hover {
      background: var(--color-secondary);
    }
  }
}

/* --------------------------------------------------------------------------
   Animations & Scroll-Driven Effects
   -------------------------------------------------------------------------- */
@layer utilities {
  @keyframes minimal-fade {
    from {
      opacity: 0;
    }
    to {
      opacity: 1;
    }
  }

  .animate-in,
  [data-animate] {
    animation: minimal-fade 0.3s ease both;
  }

  @supports (animation-timeline: view()) {
    .animate-in,
    [data-animate] {
      animation: minimal-fade ease both;
      animation-timeline: view();
      animation-range: entry 0% entry 20%;
    }
  }

  @supports (view-transition-name: none) {
    ::view-transition-old(page-body),
    ::view-transition-new(page-body) {
      animation-duration: 0.2s;
    }

    ::view-transition-old(header),
    ::view-transition-new(header) {
      animation-duration: 0.15s;
    }
  }
}

/* ==========================================================================
   OVERRIDES — Outside @layer to win over un-layered components.css
   ========================================================================== */

/* --- Navigation --- */
.main-nav a, .mega-nav a, .nav-links a, .header-phone {
  font-family: 'Montserrat', sans-serif;
  font-weight: 700;
  font-size: 0.8em;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: #333 !important;
  opacity: 1 !important;
  transition: color 0.1s ease;
}
.main-nav a:hover, .mega-nav a:hover, .nav-links a:hover, .header-phone:hover {
  color: #000 !important;
}
.nav-links a[aria-current="page"] {
  color: #000 !important;
}
.logo-text {
  color: #000 !important;
  opacity: 1 !important;
}

/* --- Fullscreen overlay --- */
.fs-overlay {
  background: rgba(0, 0, 0, 0.65);
}

/* --- Fullscreen content (dark bg) --- */
.fs-content {
  color: #fff;
  text-shadow: 0 1px 3px rgba(0,0,0,0.4);
}
.fs-content h1,
.fs-content h2,
.fs-content h3 {
  color: #fff;
  text-shadow: 0 2px 6px rgba(0,0,0,0.5);
}
.fs-content h2::after {
  background: #fff;
}
.fs-content p,
.fs-content li,
.fs-content cite,
.fs-content summary,
.fs-content blockquote {
  color: rgba(255,255,255,0.92);
}
.fs-content a:not(.btn) {
  color: #fff;
  text-decoration: underline;
  opacity: 0.9;
}
.fs-content a:not(.btn):hover {
  opacity: 1;
}

/* --- Buttons on dark bg --- */
.fs-content .btn-primary {
  background: #fff;
  color: #000;
  border-color: #fff;
}
.fs-content .btn-primary:hover {
  background: transparent;
  color: #fff;
}
.fs-content .btn-secondary {
  background: transparent;
  color: #fff;
  border-color: #fff;
}
.fs-content .btn-secondary:hover {
  background: #fff;
  color: #000;
}

/* --- Cards on dark bg --- */
.fs-grid-item,
.fs-step,
.fs-contact-item,
.fs-team-member,
.fs-feature {
  background: rgba(0,0,0,0.45);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: 8px;
  padding: 2rem 1.75rem;
  text-align: center;
}
.fs-contact-item h3::after,
.fs-grid-item h3::after,
.fs-step h3::after,
.fs-team-member h3::after,
.fs-feature h3::after {
  display: none;
}

.fs-testimonial blockquote {
  border-left-color: #fff;
  color: rgba(255,255,255,0.95);
}

/* --- FAQ on dark bg --- */
.fs-faq details {
  background: rgba(0,0,0,0.45);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: 8px;
  padding: 1.25rem 1.5rem;
}
.fs-faq summary {
  font-weight: 700;
  cursor: pointer;
}

/* --- Blog section — LIGHT background (no bg image) --- */
.fs-section-scroll {
  background: #ffffff !important;
}
.fs-section-scroll .fs-content,
.fs-section-scroll .fs-content h2,
.fs-section-scroll .fs-content h3 {
  color: #1a1a1a !important;
  text-shadow: none !important;
}
.fs-section-scroll .fs-content h2::after {
  background: #000 !important;
}
.fs-section-scroll .fs-content p,
.fs-section-scroll .fs-content li,
.fs-section-scroll .fs-content a:not(.btn) {
  color: #1a1a1a !important;
  text-shadow: none !important;
  text-decoration: none;
}

/* --- Blog cards — light context --- */
.fs-blog-grid .blog-card {
  background: #fff !important;
  border: 1px solid #e0e0e0 !important;
  border-radius: 8px;
  color: #1a1a1a !important;
  overflow: hidden;
}
.fs-blog-grid .blog-card:hover {
  border-color: #000 !important;
  box-shadow: 0 4px 20px rgba(0,0,0,0.08);
}
.fs-blog-grid .blog-card img {
  filter: none !important;
  width: 100%;
  height: 200px;
  object-fit: cover;
}
.fs-blog-grid .blog-card:hover img {
  filter: none !important;
}
.blog-card-content {
  color: #1a1a1a !important;
  padding: 1.25rem 1.5rem;
}
.blog-card-content h3 {
  color: #000 !important;
  font-size: 1.15rem;
  margin-bottom: 0.5rem;
}
.blog-card-content p {
  font-size: 0.9rem;
  line-height: 1.6;
  color: #777 !important;
  margin-bottom: 1rem;
}
.blog-category {
  display: inline-block;
  font-family: 'Montserrat', sans-serif;
  font-size: 0.7em;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: #777 !important;
  margin-bottom: 0.5rem;
}
.link-arrow {
  font-family: 'Montserrat', sans-serif;
  font-weight: 700;
  font-size: 0.8em;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: #000 !important;
  text-decoration: none !important;
}
.link-arrow:hover {
  opacity: 0.7 !important;
}

/* --- Blog section layout fix --- */
.fs-section.fs-section-scroll {
  height: auto !important;
  min-height: auto !important;
  overflow: visible !important;
  display: block !important;
}