/* ============================================================================
   HOUSING FINDER — DESIGN SYSTEM
   ============================================================================
   A comprehensive, mobile-first design system using soft, muted tones.
   All components follow a consistent visual language for a premium feel.

   Table of Contents:
   1.  CSS Custom Properties (Variables)
   2.  Reset & Base
   3.  Typography
   4.  Button Components
   5.  Card Components
   6.  Badge Components
   7.  Form Components
   8.  Section & Layout Components
   9.  Trust Badge Component
   10. Stats Counter
   11. Accordion / FAQ
   12. Testimonial Card & Star Rating
   13. Loading / Skeleton
   14. Animations & Keyframes
   15. Utility Classes
   16. Sticky Header
   17. Back-to-Top Button
   18. Sticky Mobile CTA Bar
   19. Responsive Utilities
   ============================================================================ */


/* ============================================================================
   1. CSS CUSTOM PROPERTIES (VARIABLES)
   ============================================================================ */
:root {
  /* ---- Colors: Soft, Muted Palette ---- */
  --color-primary:          #EF4444;
  --color-primary-hover:    #DC2626;
  --color-primary-light:    #FEF2F2;
  --color-primary-accent:   #FECACA;
  --color-charcoal:         #374151;
  --color-charcoal-light:   #4B5563;
  --color-grey:             #9CA3AF;
  --color-light-grey:       #F3F4F6;
  --color-border:           #E5E7EB;
  --color-white:            #FFFFFF;
  --color-off-white:        #F9FAFB;
  --color-success:          #10B981;
  --color-success-light:    #D1FAE5;
  --color-warning:          #F59E0B;
  --color-warning-light:    #FEF3C7;
  --color-info:             #3B82F6;
  --color-info-light:       #DBEAFE;

  /* ---- Typography ---- */
  --font-family:            'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-size-xs:           0.75rem;    /* 12px */
  --font-size-sm:           0.875rem;   /* 14px */
  --font-size-base:         1rem;       /* 16px */
  --font-size-lg:           1.125rem;   /* 18px */
  --font-size-xl:           1.25rem;    /* 20px */
  --font-size-2xl:          1.5rem;     /* 24px */
  --font-size-3xl:          1.875rem;   /* 30px */
  --font-size-4xl:          2.25rem;    /* 36px */
  --font-size-5xl:          3rem;       /* 48px */

  --font-weight-normal:     400;
  --font-weight-medium:     500;
  --font-weight-semibold:   600;
  --font-weight-bold:       700;
  --font-weight-extrabold:  800;

  --line-height-tight:      1.25;
  --line-height-snug:       1.375;
  --line-height-normal:     1.5;
  --line-height-relaxed:    1.625;

  --letter-spacing-tight:   -0.025em;
  --letter-spacing-normal:   0;
  --letter-spacing-wide:     0.025em;

  /* ---- Spacing ---- */
  --spacing-1:              0.25rem;    /* 4px */
  --spacing-2:              0.5rem;     /* 8px */
  --spacing-3:              0.75rem;    /* 12px */
  --spacing-4:              1rem;       /* 16px */
  --spacing-5:              1.25rem;    /* 20px */
  --spacing-6:              1.5rem;     /* 24px */
  --spacing-8:              2rem;       /* 32px */
  --spacing-10:             2.5rem;     /* 40px */
  --spacing-12:             3rem;       /* 48px */
  --spacing-16:             4rem;       /* 64px */
  --spacing-20:             5rem;       /* 80px */

  /* ---- Shadows ---- */
  --shadow-xs:              0 1px 2px rgba(0, 0, 0, 0.04);
  --shadow-sm:              0 1px 3px rgba(0, 0, 0, 0.05), 0 1px 2px rgba(0, 0, 0, 0.03);
  --shadow-md:              0 4px 6px rgba(0, 0, 0, 0.05), 0 2px 4px rgba(0, 0, 0, 0.03);
  --shadow-lg:              0 10px 15px rgba(0, 0, 0, 0.06), 0 4px 6px rgba(0, 0, 0, 0.03);
  --shadow-xl:              0 10px 25px rgba(0, 0, 0, 0.08), 0 6px 10px rgba(0, 0, 0, 0.04);
  --shadow-2xl:             0 25px 50px rgba(0, 0, 0, 0.12);
  --shadow-up:              0 -4px 12px rgba(0, 0, 0, 0.08);
  --shadow-glow:            0 0 20px rgba(239, 68, 68, 0.15);

  /* ---- Borders ---- */
  --border-width:           1px;
  --border-color:           var(--color-light-grey);
  --border:                 var(--border-width) solid var(--border-color);

  /* ---- Border Radius ---- */
  --radius-sm:              4px;
  --radius-md:              6px;
  --radius-lg:              8px;
  --radius-xl:              12px;
  --radius-2xl:             16px;
  --radius-full:            9999px;

  /* ---- Transitions ---- */
  --transition-fast:        150ms ease;
  --transition-base:        250ms ease;
  --transition-slow:        400ms ease;
  --transition-bounce:      400ms cubic-bezier(0.34, 1.56, 0.64, 1);
}


/* ============================================================================
   2. RESET & BASE
   ============================================================================ */

/* Import Inter font from Google Fonts */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&display=swap');

*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-normal);
  line-height: var(--line-height-normal);
  color: var(--color-charcoal-light);
  background-color: var(--color-white);
}

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

a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--color-primary-hover);
}


/* ============================================================================
   3. TYPOGRAPHY
   ============================================================================ */

/* Heading 1 — Hero / Page Title */
.heading-1 {
  font-size: var(--font-size-4xl);
  font-weight: var(--font-weight-extrabold);
  line-height: var(--line-height-tight);
  letter-spacing: var(--letter-spacing-tight);
  color: var(--color-charcoal);
}

/* Heading 2 — Section Titles */
.heading-2 {
  font-size: var(--font-size-3xl);
  font-weight: var(--font-weight-bold);
  line-height: var(--line-height-tight);
  letter-spacing: var(--letter-spacing-tight);
  color: var(--color-charcoal);
}

/* Heading 3 — Sub-section Titles */
.heading-3 {
  font-size: var(--font-size-2xl);
  font-weight: var(--font-weight-semibold);
  line-height: var(--line-height-snug);
  color: var(--color-charcoal);
}

/* Heading 4 — Card Titles, smaller headings */
.heading-4 {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-semibold);
  line-height: var(--line-height-snug);
  color: var(--color-charcoal);
}

/* Body Text */
.text-body {
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-normal);
  line-height: var(--line-height-relaxed);
  color: var(--color-charcoal-light);
}

/* Small Text */
.text-small {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-normal);
  line-height: var(--line-height-normal);
  color: var(--color-charcoal-light);
}

/* Muted Text */
.text-muted {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-normal);
  line-height: var(--line-height-normal);
  color: var(--color-grey);
}

/* Responsive typography — scale headings up on larger screens */
@media (min-width: 768px) {
  .heading-1 {
    font-size: var(--font-size-5xl);
  }
  .heading-2 {
    font-size: var(--font-size-4xl);
  }
  .heading-3 {
    font-size: var(--font-size-3xl);
  }
}


/* ============================================================================
   4. BUTTON COMPONENTS
   ============================================================================ */

/* Base button — shared structure for all variants */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-2);
  padding: 0.625rem 1.5rem;       /* ~10px 24px */
  font-family: var(--font-family);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  line-height: 1;
  border-radius: var(--radius-lg);
  border: 2px solid transparent;
  cursor: pointer;
  transition: all var(--transition-base);
  text-decoration: none;
  white-space: nowrap;
  user-select: none;
}

.btn:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

/* Primary — Soft red bg, white text */
.btn-primary {
  background-color: var(--color-primary);
  color: var(--color-white);
  border-color: var(--color-primary);
}

.btn-primary:hover {
  background-color: var(--color-primary-hover);
  border-color: var(--color-primary-hover);
  color: var(--color-white);
  box-shadow: 0 4px 12px rgba(239, 68, 68, 0.25);
}

.btn-primary:active {
  transform: scale(0.97);
}

/* Secondary — Soft charcoal bg, white text */
.btn-secondary {
  background-color: var(--color-charcoal);
  color: var(--color-white);
  border-color: var(--color-charcoal);
}

.btn-secondary:hover {
  background-color: var(--color-charcoal-light);
  border-color: var(--color-charcoal-light);
  color: var(--color-white);
  box-shadow: 0 4px 12px rgba(55, 65, 81, 0.2);
}

.btn-secondary:active {
  transform: scale(0.97);
}

/* Outline — Red border + red text, hover: fills red */
.btn-outline {
  background-color: transparent;
  color: var(--color-primary);
  border-color: var(--color-primary);
}

.btn-outline:hover {
  background-color: var(--color-primary);
  color: var(--color-white);
  box-shadow: 0 4px 12px rgba(239, 68, 68, 0.2);
}

/* Ghost — Transparent, charcoal text, hover: light grey bg */
.btn-ghost {
  background-color: transparent;
  color: var(--color-charcoal);
  border-color: transparent;
}

.btn-ghost:hover {
  background-color: var(--color-light-grey);
  color: var(--color-charcoal);
}

/* White — White bg, charcoal text, hover: off-white */
.btn-white {
  background-color: var(--color-white);
  color: var(--color-charcoal);
  border-color: var(--color-white);
}

.btn-white:hover {
  background-color: var(--color-off-white);
  border-color: var(--color-off-white);
  color: var(--color-charcoal);
}

/* Size Variants */
.btn-sm {
  padding: 0.375rem 1rem;         /* ~6px 16px */
  font-size: var(--font-size-xs);
  border-radius: var(--radius-md);
}

.btn-lg {
  padding: 0.875rem 2rem;         /* ~14px 32px */
  font-size: var(--font-size-base);
  border-radius: var(--radius-lg);
}


/* ============================================================================
   5. CARD COMPONENTS
   ============================================================================ */

/* Base card */
.card {
  background-color: var(--color-white);
  border: var(--border);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
  transition: box-shadow var(--transition-base), transform var(--transition-base);
}

/* Card hover — lifts and adds deeper shadow */
.card:hover,
.card-hover:hover {
  box-shadow: var(--shadow-xl);
  transform: translateY(-4px);
}

/* Card sections */
.card-header {
  padding: var(--spacing-5) var(--spacing-6);
  border-bottom: var(--border);
}

.card-body {
  padding: var(--spacing-5) var(--spacing-6);
}

.card-footer {
  padding: var(--spacing-4) var(--spacing-6);
  border-top: var(--border);
  background-color: var(--color-off-white);
}

/* Card image — full-width top image */
.card-image {
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
}


/* ============================================================================
   6. BADGE COMPONENTS
   ============================================================================ */

/* Base badge — small pill */
.badge {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-1);
  padding: 0.125rem 0.625rem;     /* ~2px 10px */
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-semibold);
  line-height: 1.5;
  border-radius: var(--radius-full);
  white-space: nowrap;
  letter-spacing: var(--letter-spacing-wide);
}

/* Red badge */
.badge-red {
  background-color: var(--color-primary-light);
  color: var(--color-primary);
}

/* Green badge */
.badge-green {
  background-color: var(--color-success-light);
  color: var(--color-success);
}

/* Charcoal badge */
.badge-charcoal {
  background-color: var(--color-light-grey);
  color: var(--color-charcoal);
}

/* Info / Blue badge */
.badge-blue {
  background-color: var(--color-info-light);
  color: var(--color-info);
}

/* Warning / Amber badge */
.badge-warning {
  background-color: var(--color-warning-light);
  color: var(--color-warning);
}

/* NEW property badge */
.badge-new {
  background-color: var(--color-primary);
  color: var(--color-white);
  text-transform: uppercase;
  font-size: 10px;
  font-weight: var(--font-weight-bold);
  letter-spacing: 0.05em;
  padding: 0.25rem 0.75rem;
}

/* SOLD badge */
.badge-sold {
  background-color: var(--color-charcoal);
  color: var(--color-white);
  text-transform: uppercase;
  font-size: 10px;
  font-weight: var(--font-weight-bold);
  letter-spacing: 0.05em;
  padding: 0.25rem 0.75rem;
}


/* ============================================================================
   7. FORM COMPONENTS
   ============================================================================ */

/* Text input */
.input {
  display: block;
  width: 100%;
  padding: 0.625rem 0.875rem;     /* ~10px 14px */
  font-family: var(--font-family);
  font-size: var(--font-size-sm);
  color: var(--color-charcoal);
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
  appearance: none;
}

.input::placeholder {
  color: var(--color-grey);
}

.input:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.1);
}

/* Select */
.select {
  display: block;
  width: 100%;
  padding: 0.625rem 2.5rem 0.625rem 0.875rem;
  font-family: var(--font-family);
  font-size: var(--font-size-sm);
  color: var(--color-charcoal);
  background-color: var(--color-white);
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%239CA3AF' d='M6 8.825a.5.5 0 0 1-.354-.146L2.11 5.143a.5.5 0 0 1 .707-.707L6 7.618l3.182-3.182a.5.5 0 1 1 .707.707L6.354 8.68A.5.5 0 0 1 6 8.825Z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 0.875rem center;
  background-size: 12px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
  appearance: none;
  cursor: pointer;
}

.select:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.1);
}

/* Textarea */
.textarea {
  display: block;
  width: 100%;
  padding: 0.625rem 0.875rem;
  font-family: var(--font-family);
  font-size: var(--font-size-sm);
  color: var(--color-charcoal);
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
  resize: vertical;
  min-height: 100px;
}

.textarea:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.1);
}

/* Checkbox */
.checkbox {
  width: 18px;
  height: 18px;
  accent-color: var(--color-primary);
  border-radius: var(--radius-sm);
  cursor: pointer;
}

/* Radio */
.radio {
  width: 18px;
  height: 18px;
  accent-color: var(--color-primary);
  cursor: pointer;
}

/* Input Group — Label + Input combination */
.input-group {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-2);
}

.input-group label {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-charcoal);
}

/* Input with icon prefix */
.input-icon-wrapper {
  position: relative;
}

.input-icon-wrapper .input {
  padding-left: 2.5rem;
}

.input-icon-wrapper .input-icon {
  position: absolute;
  left: 0.875rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--color-grey);
  width: 16px;
  height: 16px;
  pointer-events: none;
}


/* ============================================================================
   8. SECTION & LAYOUT COMPONENTS
   ============================================================================ */

/* Base section — generous vertical padding */
.section {
  padding: var(--spacing-20) 0;
}

/* Alternate background section */
.section-alt {
  background-color: var(--color-off-white);
}

/* Dark section — charcoal bg */
.section-dark {
  background-color: var(--color-charcoal);
  color: var(--color-white);
}

.section-dark .heading-1,
.section-dark .heading-2,
.section-dark .heading-3,
.section-dark .heading-4 {
  color: var(--color-white);
}

.section-dark .text-body,
.section-dark .text-small {
  color: rgba(255, 255, 255, 0.8);
}

.section-dark .text-muted {
  color: rgba(255, 255, 255, 0.6);
}

/* Red section — soft red bg */
.section-red {
  background-color: var(--color-primary);
  color: var(--color-white);
}

.section-red .heading-1,
.section-red .heading-2,
.section-red .heading-3,
.section-red .heading-4 {
  color: var(--color-white);
}

.section-red .text-body,
.section-red .text-small {
  color: rgba(255, 255, 255, 0.9);
}

.section-red .text-muted {
  color: rgba(255, 255, 255, 0.7);
}

/* Container — centered content with max-width */
.container {
  width: 100%;
  max-width: 1280px;
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--spacing-4);
  padding-right: var(--spacing-4);
}

/* Narrow container for text-heavy pages */
.container-narrow {
  max-width: 768px;
}

/* Wide container for dashboard/full pages */
.container-wide {
  max-width: 1440px;
}


/* ============================================================================
   9. TRUST BADGE COMPONENT
   ============================================================================ */

/* Individual trust badge */
.trust-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-2);
  padding: var(--spacing-2) var(--spacing-4);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-charcoal-light);
  background-color: var(--color-off-white);
  border-radius: var(--radius-full);
  border: 1px solid var(--color-light-grey);
}

.trust-badge svg,
.trust-badge img {
  width: 16px;
  height: 16px;
  flex-shrink: 0;
}

/* Trust bar — horizontal row of trust badges */
.trust-bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-3);
  padding: var(--spacing-4) 0;
}


/* ============================================================================
   10. STATS COUNTER
   ============================================================================ */

/* Large number display */
.stat-counter {
  font-size: var(--font-size-4xl);
  font-weight: var(--font-weight-extrabold);
  line-height: 1;
  color: var(--color-charcoal);
  letter-spacing: var(--letter-spacing-tight);
}

/* Variant: stat counter inside dark sections */
.section-dark .stat-counter,
.section-red .stat-counter {
  color: var(--color-white);
}

/* Small text label below the number */
.stat-label {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-grey);
  margin-top: var(--spacing-2);
}

.section-dark .stat-label {
  color: rgba(255, 255, 255, 0.7);
}

.section-red .stat-label {
  color: rgba(255, 255, 255, 0.8);
}

/* Responsive stat counter — scale up on desktop */
@media (min-width: 768px) {
  .stat-counter {
    font-size: var(--font-size-5xl);
  }
}


/* ============================================================================
   11. ACCORDION / FAQ
   ============================================================================ */

/* Accordion container */
.accordion {
  width: 100%;
  border: var(--border);
  border-radius: var(--radius-xl);
  overflow: hidden;
}

/* Individual accordion item */
.accordion-item {
  border-bottom: var(--border);
}

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

/* Click target */
.accordion-trigger {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  padding: var(--spacing-5) var(--spacing-6);
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-semibold);
  color: var(--color-charcoal);
  background: none;
  border: none;
  cursor: pointer;
  text-align: left;
  transition: background-color var(--transition-fast);
}

.accordion-trigger:hover {
  background-color: var(--color-off-white);
}

/* +/- icon indicator */
.accordion-trigger::after {
  content: '+';
  display: flex;
  align-items: center;
  justify-content: center;
  width: 24px;
  height: 24px;
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-normal);
  color: var(--color-grey);
  background-color: var(--color-light-grey);
  border-radius: var(--radius-full);
  flex-shrink: 0;
  transition: transform var(--transition-base), background-color var(--transition-base);
}

.accordion-item.active .accordion-trigger::after {
  content: '−';
  background-color: var(--color-primary-light);
  color: var(--color-primary);
  transform: rotate(180deg);
}

/* Accordion content — hidden by default */
.accordion-content {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--transition-slow) ease, padding var(--transition-slow) ease;
}

.accordion-content-inner {
  padding: 0 var(--spacing-6) var(--spacing-5);
  color: var(--color-charcoal-light);
  font-size: var(--font-size-sm);
  line-height: var(--line-height-relaxed);
}

/* Active state — visible content */
.accordion-item.active .accordion-content {
  max-height: 500px;  /* generous max-height to allow for long content */
}


/* ============================================================================
   12. TESTIMONIAL CARD & STAR RATING
   ============================================================================ */

/* Testimonial card */
.testimonial-card {
  background-color: var(--color-white);
  border: var(--border);
  border-radius: var(--radius-xl);
  padding: var(--spacing-8);
  position: relative;
  transition: box-shadow var(--transition-base), transform var(--transition-base);
}

.testimonial-card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-2px);
}

/* Quote icon */
.testimonial-card::before {
  content: '"';
  position: absolute;
  top: var(--spacing-4);
  left: var(--spacing-6);
  font-size: 4rem;
  font-family: Georgia, serif;
  color: var(--color-primary-accent);
  line-height: 1;
  pointer-events: none;
}

/* Quote text */
.testimonial-text {
  font-size: var(--font-size-base);
  line-height: var(--line-height-relaxed);
  color: var(--color-charcoal-light);
  margin-bottom: var(--spacing-6);
  padding-top: var(--spacing-6);
  font-style: italic;
}

/* Avatar row at bottom */
.testimonial-author {
  display: flex;
  align-items: center;
  gap: var(--spacing-3);
}

.testimonial-avatar {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-full);
  object-fit: cover;
  border: 2px solid var(--color-primary-accent);
}

.testimonial-name {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  color: var(--color-charcoal);
}

.testimonial-role {
  font-size: var(--font-size-xs);
  color: var(--color-grey);
}

/* Star rating */
.star-rating {
  display: inline-flex;
  gap: 2px;
}

.star-rating .star {
  width: 16px;
  height: 16px;
  color: var(--color-primary);
}

/* Filled star */
.star-rating .star-filled {
  fill: var(--color-primary);
  color: var(--color-primary);
}

/* Empty star */
.star-rating .star-empty {
  fill: none;
  stroke: var(--color-primary-accent);
  stroke-width: 1.5;
  color: var(--color-primary-accent);
}


/* ============================================================================
   13. LOADING / SKELETON
   ============================================================================ */

/* Base skeleton with shimmer animation */
.skeleton {
  background: linear-gradient(
    90deg,
    var(--color-light-grey) 25%,
    #E8E8E8 50%,
    var(--color-light-grey) 75%
  );
  background-size: 200% 100%;
  animation: shimmer 1.5s infinite ease-in-out;
  border-radius: var(--radius-md);
}

/* Skeleton text — single line */
.skeleton-text {
  height: 14px;
  margin-bottom: var(--spacing-2);
  border-radius: var(--radius-sm);
}

.skeleton-text:last-child {
  width: 75%;
}

/* Skeleton image — card-image placeholder */
.skeleton-image {
  width: 100%;
  aspect-ratio: 16 / 10;
  border-radius: var(--radius-xl) var(--radius-xl) 0 0;
}

/* Skeleton card — full card placeholder */
.skeleton-card {
  border-radius: var(--radius-xl);
  overflow: hidden;
}

/* Skeleton heading */
.skeleton-heading {
  height: 24px;
  width: 60%;
  margin-bottom: var(--spacing-3);
}

/* Skeleton circle — avatar placeholder */
.skeleton-circle {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-full);
}


/* ============================================================================
   14. ANIMATIONS & KEYFRAMES
   ============================================================================ */

/* Shimmer — for skeleton loading */
@keyframes shimmer {
  0% {
    background-position: 200% 0;
  }
  100% {
    background-position: -200% 0;
  }
}

/* Fade In Up — for scroll-triggered animations */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Fade In — simple opacity */
@keyframes fadeIn {
  from { opacity: 0; }
  to   { opacity: 1; }
}

/* Slide In Left */
@keyframes slideInLeft {
  from {
    opacity: 0;
    transform: translateX(-30px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

/* Slide In Right */
@keyframes slideInRight {
  from {
    opacity: 0;
    transform: translateX(30px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

/* Count Up — for stat counters (visual pulsing while counting) */
@keyframes countUp {
  0%   { transform: scale(1); }
  50%  { transform: scale(1.05); }
  100% { transform: scale(1); }
}

/* Pulse dot — pulsing indicator */
@keyframes pulseDot {
  0%, 100% {
    transform: scale(1);
    opacity: 1;
  }
  50% {
    transform: scale(1.6);
    opacity: 0.4;
  }
}

/* Bounce in — for elements appearing with bounce */
@keyframes bounceIn {
  0%   { opacity: 0; transform: scale(0.3); }
  50%  { opacity: 1; transform: scale(1.05); }
  70%  { transform: scale(0.95); }
  100% { transform: scale(1); }
}


/* --- Scroll-triggered animation classes --- */

/* Elements start hidden and animate in when .animate-visible is added */
.animate-fade-in {
  opacity: 0;
  transition: opacity 0.6s ease;
}

.animate-fade-in.animate-visible {
  opacity: 1;
}

.animate-slide-up {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.animate-slide-up.animate-visible {
  opacity: 1;
  transform: translateY(0);
}

.animate-slide-left {
  opacity: 0;
  transform: translateX(-30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.animate-slide-left.animate-visible {
  opacity: 1;
  transform: translateX(0);
}

.animate-slide-right {
  opacity: 0;
  transform: translateX(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.animate-slide-right.animate-visible {
  opacity: 1;
  transform: translateX(0);
}

/* Staggered animation delays for child elements */
.animate-stagger > *:nth-child(1) { transition-delay: 0ms; }
.animate-stagger > *:nth-child(2) { transition-delay: 100ms; }
.animate-stagger > *:nth-child(3) { transition-delay: 200ms; }
.animate-stagger > *:nth-child(4) { transition-delay: 300ms; }
.animate-stagger > *:nth-child(5) { transition-delay: 400ms; }
.animate-stagger > *:nth-child(6) { transition-delay: 500ms; }


/* --- Hover interaction classes --- */

/* Hover lift — subtle upward float */
.hover-lift {
  transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.hover-lift:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

/* Hover scale — gentle scale up */
.hover-scale {
  transition: transform var(--transition-base);
}

.hover-scale:hover {
  transform: scale(1.02);
}

/* Hover glow — subtle box-shadow glow */
.hover-glow {
  transition: box-shadow var(--transition-base);
}

.hover-glow:hover {
  box-shadow: var(--shadow-glow);
}

/* Pulsing red dot indicator */
.pulse-dot {
  display: inline-block;
  width: 8px;
  height: 8px;
  background-color: var(--color-primary);
  border-radius: var(--radius-full);
  animation: pulseDot 2s infinite ease-in-out;
}


/* ============================================================================
   15. UTILITY CLASSES
   ============================================================================ */

/* ---- Color Utilities ---- */
.text-primary    { color: var(--color-primary) !important; }
.text-charcoal   { color: var(--color-charcoal) !important; }
.text-white      { color: var(--color-white) !important; }
.text-success    { color: var(--color-success) !important; }
.text-warning    { color: var(--color-warning) !important; }
.text-info       { color: var(--color-info) !important; }

.bg-primary      { background-color: var(--color-primary) !important; }
.bg-charcoal     { background-color: var(--color-charcoal) !important; }
.bg-off-white    { background-color: var(--color-off-white) !important; }
.bg-white        { background-color: var(--color-white) !important; }
.bg-primary-light { background-color: var(--color-primary-light) !important; }

/* ---- Border Radius Utilities ---- */
.rounded-sm      { border-radius: var(--radius-sm) !important; }
.rounded-md      { border-radius: var(--radius-md) !important; }
.rounded-lg      { border-radius: var(--radius-lg) !important; }
.rounded-xl      { border-radius: var(--radius-xl) !important; }
.rounded-2xl     { border-radius: var(--radius-2xl) !important; }
.rounded-full    { border-radius: var(--radius-full) !important; }

/* ---- Shadow Utilities ---- */
.shadow-sm       { box-shadow: var(--shadow-sm) !important; }
.shadow-md       { box-shadow: var(--shadow-md) !important; }
.shadow-lg       { box-shadow: var(--shadow-lg) !important; }
.shadow-xl       { box-shadow: var(--shadow-xl) !important; }
.shadow-none     { box-shadow: none !important; }

/* ---- Display Utilities ---- */
.hidden-empty:empty { display: none !important; }

/* ---- Text Alignment ---- */
.text-center     { text-align: center !important; }
.text-left       { text-align: left !important; }
.text-right      { text-align: right !important; }

/* ---- Flex Utilities ---- */
.flex            { display: flex !important; }
.flex-col        { flex-direction: column !important; }
.flex-wrap       { flex-wrap: wrap !important; }
.items-center    { align-items: center !important; }
.justify-center  { justify-content: center !important; }
.justify-between { justify-content: space-between !important; }
.gap-2           { gap: var(--spacing-2) !important; }
.gap-3           { gap: var(--spacing-3) !important; }
.gap-4           { gap: var(--spacing-4) !important; }
.gap-6           { gap: var(--spacing-6) !important; }
.gap-8           { gap: var(--spacing-8) !important; }

/* ---- Spacing Utilities ---- */
.mt-0  { margin-top: 0 !important; }
.mt-2  { margin-top: var(--spacing-2) !important; }
.mt-4  { margin-top: var(--spacing-4) !important; }
.mt-6  { margin-top: var(--spacing-6) !important; }
.mt-8  { margin-top: var(--spacing-8) !important; }
.mb-0  { margin-bottom: 0 !important; }
.mb-2  { margin-bottom: var(--spacing-2) !important; }
.mb-4  { margin-bottom: var(--spacing-4) !important; }
.mb-6  { margin-bottom: var(--spacing-6) !important; }
.mb-8  { margin-bottom: var(--spacing-8) !important; }

/* ---- Width Utilities ---- */
.w-full          { width: 100% !important; }

/* ---- Overflow ---- */
.overflow-hidden { overflow: hidden !important; }


/* ============================================================================
   16. STICKY HEADER
   ============================================================================ */

/* Compact header state when scrolled */
.header-scrolled {
  box-shadow: var(--shadow-md);
  background-color: rgba(255, 255, 255, 0.97) !important;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

/* Shrink padding when scrolled */
.header-scrolled .header-inner {
  padding-top: var(--spacing-2);
  padding-bottom: var(--spacing-2);
}

/* Reduce logo size when scrolled (if applicable) */
.header-scrolled .header-logo img {
  height: 32px;
  transition: height var(--transition-base);
}


/* ============================================================================
   17. BACK-TO-TOP BUTTON
   ============================================================================ */

.back-to-top {
  position: fixed;
  bottom: var(--spacing-8);
  right: var(--spacing-8);
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: var(--color-primary);
  color: var(--color-white);
  border: none;
  border-radius: var(--radius-full);
  cursor: pointer;
  box-shadow: var(--shadow-lg);
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: opacity var(--transition-base), visibility var(--transition-base), transform var(--transition-base), background-color var(--transition-fast);
  z-index: 999;
}

.back-to-top:hover {
  background-color: var(--color-primary-hover);
  transform: translateY(-2px);
  box-shadow: var(--shadow-xl);
}

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

/* Arrow icon inside the button */
.back-to-top svg {
  width: 20px;
  height: 20px;
}


/* ============================================================================
   18. STICKY MOBILE CTA BAR
   ============================================================================ */

.mobile-cta-bar {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  display: none;                   /* hidden on desktop */
  align-items: center;
  justify-content: center;
  gap: var(--spacing-3);
  padding: var(--spacing-3) var(--spacing-4);
  background-color: var(--color-primary);
  color: var(--color-white);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  box-shadow: var(--shadow-up);
  z-index: 1000;
  text-align: center;
}

.mobile-cta-bar a {
  color: var(--color-white);
  text-decoration: underline;
  text-underline-offset: 2px;
}

.mobile-cta-bar a:hover {
  color: rgba(255, 255, 255, 0.85);
}

/* Show only on mobile */
@media (max-width: 767px) {
  .mobile-cta-bar {
    display: flex;
  }

  /* Push content up so it's not hidden behind the bar */
  body.has-mobile-cta {
    padding-bottom: 56px;
  }
}


/* ============================================================================
   19. RESPONSIVE UTILITIES
   ============================================================================
   Breakpoints:
     sm:  640px
     md:  768px
     lg:  1024px
     xl:  1280px
   ============================================================================ */

/* Mobile-only: visible below md breakpoint */
.mobile-only {
  display: block;
}

/* Desktop-only: hidden below md breakpoint */
.desktop-only {
  display: none;
}

@media (min-width: 768px) {
  .mobile-only {
    display: none !important;
  }

  .desktop-only {
    display: block !important;
  }
}

/* Responsive grid helpers */
.grid {
  display: grid;
  gap: var(--spacing-6);
}

@media (min-width: 640px) {
  .grid-cols-2-sm {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 768px) {
  .grid-cols-2-md {
    grid-template-columns: repeat(2, 1fr);
  }
  .grid-cols-3-md {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (min-width: 1024px) {
  .grid-cols-3-lg {
    grid-template-columns: repeat(3, 1fr);
  }
  .grid-cols-4-lg {
    grid-template-columns: repeat(4, 1fr);
  }
}

@media (min-width: 1280px) {
  .grid-cols-4-xl {
    grid-template-columns: repeat(4, 1fr);
  }
}

/* Responsive section padding */
@media (max-width: 767px) {
  .section {
    padding: var(--spacing-12) 0;
  }
}

/* ============================================================================
   20. DARK MODE — CSS Variable Overrides
   design-system components consume these vars; page-level overrides live in
   /css/dark-mode.css which is injected via includes/dark-mode-init.blade.php
   ============================================================================ */

[data-theme="dark"] {
  --color-charcoal:         #F1F5F9;
  --color-charcoal-light:   #CBD5E1;
  --color-grey:             #64748B;
  --color-light-grey:       #2D3A4E;
  --color-border:           #2D3A4E;
  --color-off-white:        #0D1421;
  /* --color-white kept at #FFFFFF so white text on dark sections stays correct */
  --border-color:           #2D3A4E;

  --shadow-sm:  0 1px 3px rgba(0,0,0,0.5), 0 1px 2px rgba(0,0,0,0.4);
  --shadow-md:  0 4px 6px rgba(0,0,0,0.5), 0 2px 4px rgba(0,0,0,0.4);
  --shadow-lg:  0 10px 15px rgba(0,0,0,0.6), 0 4px 6px rgba(0,0,0,0.4);
  --shadow-xl:  0 10px 25px rgba(0,0,0,0.7), 0 6px 10px rgba(0,0,0,0.5);
}

/* ---- Prefers Reduced Motion ---- */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  .animate-fade-in,
  .animate-slide-up,
  .animate-slide-left,
  .animate-slide-right {
    opacity: 1 !important;
    transform: none !important;
  }
}