/* ==========================================================================
   SHORELINE MEDICAL BILLING — CASE STUDIES PAGE STYLESHEET
   Strictly complies with RULE[westyle.md] (Approved palette, light design only)
   Strictly complies with RULE[section-spacing.md] and RULE[text-relevant-icons.md]
   ========================================================================== */

/* ── 1. PAGE HERO / BREADCRUMB ── */
.cs-hero {
  padding: clamp(40px, 4.5vw, 56px) 0 clamp(36px, 4vw, 48px);
  background-image:
    radial-gradient(circle at 50% 8%, rgba(24, 183, 201, 0.10) 0%, transparent 60%),
    radial-gradient(circle at 10% 90%, rgba(0, 102, 179, 0.06) 0%, transparent 50%),
    linear-gradient(180deg, rgba(255, 255, 255, 0.78) 0%, rgba(242, 248, 251, 0.68) 50%, rgba(255, 255, 255, 0.82) 100%),
    url('../../img/casestudies/case_hero_bg.avif');
  background-size: cover;
  background-position: center 30%;
  background-repeat: no-repeat;
  position: relative;
  overflow: hidden;
  color: var(--color-text);
  border-bottom: none;
  text-align: center;
}

.cs-hero::before {
  content: '';
  position: absolute;
  top: -120px;
  right: -100px;
  width: 550px;
  height: 550px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(24, 183, 201, 0.15) 0%, rgba(0, 102, 179, 0.06) 50%, transparent 70%);
  pointer-events: none;
}

.cs-hero .container {
  position: relative;
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  margin: 0 auto;
}

.cs-hero-badge,
.cs-hero .section-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 6px 18px;
  background: rgba(0, 102, 179, 0.08) !important;
  border: 1.5px solid rgba(0, 102, 179, 0.20) !important;
  border-radius: var(--radius-full);
  color: var(--color-primary) !important;
  font-size: 0.82rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  box-shadow: 0 4px 14px rgba(0, 102, 179, 0.06) !important;
  text-shadow: none !important;
  position: relative;
  margin: 0 auto 18px;
  transition: transform 0.28s ease, border-color 0.28s ease;
}

.cs-hero-badge:hover,
.cs-hero .section-badge:hover {
  transform: translateY(-2px);
  border-color: var(--color-accent) !important;
}

.cs-hero-badge::before,
.cs-hero .section-badge::before {
  display: none !important;
}

.cs-hero-badge ion-icon,
.cs-hero .section-badge ion-icon {
  color: var(--color-secondary) !important;
  font-size: 1.05rem;
  filter: none;
  transition: transform 0.25s ease, filter 0.25s ease, color 0.25s ease;
}

.cs-hero-badge:hover ion-icon,
.cs-hero .section-badge:hover ion-icon {
  transform: scale(1.18);
  filter: drop-shadow(0 0 8px rgba(24, 183, 201, 0.85));
  color: var(--color-accent) !important;
}

.cs-hero h1 {
  font-family: 'Plus Jakarta Sans', sans-serif;
  font-size: clamp(2.2rem, 4vw, 3.2rem);
  font-weight: 800;
  color: var(--color-text);
  line-height: 1.22;
  text-align: center;
  margin: 0 auto 16px;
  letter-spacing: -0.02em;
}

.cs-hero h1 .accent {
  color: var(--color-primary);
}

.cs-hero p {
  font-size: 1.12rem;
  color: var(--color-body-text);
  font-weight: 500;
  max-width: 740px;
  line-height: 1.7;
  text-align: center;
  margin: 0 auto 28px;
}

.cs-breadcrumb {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 6px 18px;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--color-body-text);
  margin: 0 auto;
  box-shadow: 0 2px 8px rgba(18, 48, 74, 0.04);
}

.cs-breadcrumb a {
  color: var(--color-primary);
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 4px;
  transition: color 0.2s ease;
}

.cs-breadcrumb a:hover {
  color: var(--color-secondary);
}

.cs-breadcrumb ion-icon {
  font-size: 0.85rem;
  color: var(--color-secondary);
  filter: none;
}

.cs-breadcrumb span {
  color: var(--color-text);
  font-weight: 700;
}

/* ── 2. CASE STUDY CARDS SECTION ── */
.cs-section {
  padding: clamp(38px, 4.5vw, 54px) 0;
  background: var(--color-background);
}

.cs-filter-bar {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 40px;
}

.cs-filter-btn {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 9px 20px;
  border-radius: var(--radius-full);
  background: var(--color-background-soft);
  border: 1.5px solid var(--color-border);
  color: var(--color-body-text);
  font-weight: 700;
  font-size: 0.88rem;
  cursor: pointer;
  transition: all 0.25s ease;
  font-family: inherit;
  box-shadow: 0 2px 6px rgba(18, 48, 74, 0.03);
}

.cs-filter-btn ion-icon {
  font-size: 0.95rem;
  color: var(--color-secondary);
  filter: none;
  transition: transform 0.2s ease, color 0.2s ease;
}

.cs-filter-btn:hover {
  border-color: var(--color-secondary);
  color: var(--color-primary);
  transform: translateY(-2px);
}

.cs-filter-btn:hover ion-icon {
  transform: scale(1.15);
  color: var(--color-accent);
}

.cs-filter-btn.active {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
  color: #FFFFFF !important;
  border-color: transparent;
  box-shadow: 0 4px 14px rgba(0, 102, 179, 0.30);
}

.cs-filter-btn.active ion-icon {
  color: #FFFFFF;
  filter: none;
}

.cs-list {
  display: flex;
  flex-direction: column;
  gap: 32px;
}

.cs-card {
  background: var(--color-background-soft);
  border: 1.5px solid var(--color-border);
  border-radius: 18px;
  display: grid;
  grid-template-columns: 360px 1fr;
  overflow: hidden;
  box-shadow: 0 6px 24px rgba(18, 48, 74, 0.04);
  transition: transform 0.35s cubic-bezier(0.16, 1, 0.3, 1), border-color 0.35s ease, box-shadow 0.35s ease;
  position: relative;
}

.cs-card.is-hidden {
  display: none !important;
}

.cs-card:hover {
  transform: translateY(-5px);
  border-color: var(--color-accent);
  box-shadow: 0 16px 36px rgba(0, 102, 179, 0.12), 0 0 16px rgba(24, 183, 201, 0.16);
}

.cs-image-wrap {
  width: 100%;
  height: 100%;
  min-height: 280px;
  position: relative;
  overflow: hidden;
  background: var(--color-border);
}

.cs-image-wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s cubic-bezier(0.16, 1, 0.3, 1);
  display: block;
}

.cs-card:hover .cs-image-wrap img {
  transform: scale(1.05);
}

.cs-body {
  padding: 36px 40px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.cs-body .section-badge,
.cs-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px;
  background: rgba(0, 102, 179, 0.08);
  color: var(--color-primary);
  border: 1.5px solid rgba(0, 102, 179, 0.20);
  border-radius: var(--radius-full);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  margin-bottom: 14px;
  width: fit-content;
  transition: all 0.25s ease;
}

.cs-body .section-badge ion-icon,
.cs-tag ion-icon {
  font-size: 1rem;
  color: var(--color-secondary);
  filter: none;
  transition: transform 0.25s ease, filter 0.25s ease, color 0.25s ease;
}

.cs-card:hover .cs-body .section-badge ion-icon,
.cs-card:hover .cs-tag ion-icon {
  transform: scale(1.18);
  filter: drop-shadow(0 0 8px rgba(24, 183, 201, 0.85));
  color: var(--color-accent);
}

.cs-body h2 {
  font-family: 'Plus Jakarta Sans', sans-serif;
  font-size: 1.45rem;
  font-weight: 800;
  color: var(--color-text);
  line-height: 1.35;
  margin-bottom: 22px;
}

.cs-body h2 .accent {
  color: var(--color-primary);
}

.cs-metrics-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-bottom: 24px;
  padding: 18px 20px;
  background: #FFFFFF;
  border: 1.5px solid var(--color-border);
  border-radius: 14px;
  box-shadow: 0 2px 10px rgba(18, 48, 74, 0.03);
}

.cs-metric-item {
  text-align: center;
}

.cs-metric-val {
  font-family: 'Plus Jakarta Sans', sans-serif;
  font-size: 1.35rem;
  font-weight: 800;
  color: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 5px;
  margin-bottom: 4px;
  line-height: 1.2;
}

.cs-metric-val .up-arrow {
  color: var(--color-success);
  font-size: 0.85em;
  filter: none;
}

.cs-metric-val .down-arrow {
  color: var(--color-secondary);
  font-size: 0.85em;
  filter: none;
}

.cs-metric-label {
  font-size: 0.8rem;
  color: var(--color-body-text);
  line-height: 1.4;
  font-weight: 500;
}

.cs-read-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--color-primary);
  font-weight: 700;
  font-size: 0.95rem;
  text-decoration: none;
  transition: gap 0.25s ease, color 0.25s ease;
}

.cs-read-link ion-icon {
  font-size: 1.05rem;
  color: var(--color-secondary);
  filter: none;
  transition: transform 0.25s ease, color 0.25s ease;
}

.cs-read-link:hover {
  gap: 12px;
  color: var(--color-secondary);
}

.cs-read-link:hover ion-icon {
  transform: translateX(4px);
  color: var(--color-accent);
}

/* ── 3. RESPONSIVE MEDIA QUERIES ── */
@media (max-width: 992px) {
  .cs-hero {
    padding: clamp(36px, 4vw, 48px) 0;
  }

  .cs-card {
    grid-template-columns: 1fr;
  }

  .cs-image-wrap {
    height: 240px;
    min-height: auto;
  }

  .cs-body {
    padding: 30px 24px;
  }

  .cs-metrics-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 12px;
  }
}

@media (max-width: 768px) {
  .cs-hero {
    padding: clamp(32px, 3.5vw, 42px) 0;
  }

  .cs-hero h1 {
    font-size: clamp(1.8rem, 4.5vw, 2.4rem);
  }

  .cs-hero p {
    font-size: 1rem;
  }

  .cs-section {
    padding: clamp(32px, 3.5vw, 42px) 0;
  }

  .cs-metrics-grid {
    grid-template-columns: 1fr;
    text-align: left;
  }

  .cs-metric-item {
    text-align: left;
  }

  .cs-metric-val {
    justify-content: flex-start;
  }

  .cs-filter-bar {
    gap: 8px;
    margin-bottom: 30px;
  }

  .cs-filter-btn {
    padding: 8px 16px;
    font-size: 0.85rem;
  }
}

@media (max-width: 576px) {
  .cs-hero h1 {
    font-size: 1.7rem;
    margin-bottom: 12px;
  }

  .cs-hero p {
    font-size: 0.95rem;
    line-height: 1.55;
  }

  .cs-body {
    padding: 24px 16px;
  }

  .cs-body h2 {
    font-size: 1.25rem;
    margin-bottom: 18px;
  }

  .cs-image-wrap {
    height: 200px;
  }
}

@media (max-width: 380px) {
  .cs-hero h1 {
    font-size: 1.5rem;
  }

  .cs-filter-btn {
    width: 100%;
    justify-content: center;
  }
}