/* ==========================================================================
   GLOW AND EMBER — Luxury Boutique Salon Website
   Core Color Triad:
   - Tactile Substrate Purity: #F4EFE6
   - Treatment Restoration: #2D3F33
   - Inner Radiance: #C17F44 / #B86B27
   ========================================================================== */

:root {
  --color-substrate: #F4EFE6;
  --color-substrate-card: #FAF7F2;
  --color-substrate-border: rgba(45, 63, 51, 0.12);
  --color-restoration: #2D3F33;
  --color-restoration-light: #3D5545;
  --color-restoration-muted: #5B6F62;
  --color-restoration-subtle: #84988B;
  --color-radiance: #C17F44;
  --color-radiance-deep: #B86B27;
  --color-radiance-soft: rgba(193, 127, 68, 0.14);

  --font-serif: 'Cormorant Garamond', Garamond, Georgia, serif;
  --font-sans: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;

  --shadow-sm: 0 2px 8px rgba(45, 63, 51, 0.04);
  --shadow-md: 0 8px 24px -4px rgba(45, 63, 51, 0.08), 0 2px 6px rgba(45, 63, 51, 0.04);
  --shadow-lg: 0 16px 36px -6px rgba(45, 63, 51, 0.10), 0 4px 12px rgba(45, 63, 51, 0.05);

  --transition: all 0.32s cubic-bezier(0.16, 1, 0.3, 1);
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: 80px;
}

body {
  font-family: var(--font-sans);
  background-color: var(--color-substrate);
  color: var(--color-restoration);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  position: relative;
  overflow-x: hidden;
  min-height: 100vh;
}

/* Ambient Canvas / Warm Ember Glow */
#ambient-canvas {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 1;
  opacity: 0.55;
}

/* ==========================================================================
   Sticky Navigation Bar
   ========================================================================== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(244, 239, 230, 0.90);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid rgba(45, 63, 51, 0.08);
  transition: var(--transition);
}

.nav-container {
  max-width: 1040px;
  margin: 0 auto;
  padding: 0.85rem 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
}

.nav-brand {
  display: flex;
  flex-direction: column;
  text-decoration: none;
  color: var(--color-restoration);
}

.nav-brand-title {
  font-family: var(--font-serif);
  font-size: 1.25rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  line-height: 1.1;
  color: var(--color-restoration);
}

.nav-brand-sub {
  font-size: 0.65rem;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: var(--color-radiance-deep);
  font-weight: 500;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 1.75rem;
}

.nav-link {
  font-size: 0.76rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-restoration-muted);
  text-decoration: none;
  font-weight: 500;
  transition: var(--transition);
  position: relative;
  padding: 0.25rem 0;
}

.nav-link:hover {
  color: var(--color-radiance-deep);
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 1px;
  background-color: var(--color-radiance);
  transition: width 0.3s ease;
}

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

.nav-cta-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  background-color: var(--color-restoration);
  color: var(--color-substrate);
  font-family: var(--font-sans);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  text-decoration: none;
  padding: 0.62rem 1.25rem;
  border-radius: 9999px;
  border: 1px solid rgba(193, 127, 68, 0.25);
  transition: var(--transition);
  white-space: nowrap;
}

.nav-cta-btn .btn-spark {
  color: var(--color-radiance);
  font-size: 0.75rem;
  transition: transform 0.3s ease;
}

.nav-cta-btn:hover {
  background-color: var(--color-restoration-light);
  box-shadow: 0 4px 14px rgba(45, 63, 51, 0.2);
  transform: translateY(-1px);
}

.nav-cta-btn:hover .btn-spark {
  transform: rotate(45deg);
}

/* ==========================================================================
   Page Container & Layout
   ========================================================================== */
.page-container {
  position: relative;
  z-index: 2;
  max-width: 960px;
  margin: 0 auto;
  padding: 0 1.5rem 3rem 1.5rem;
}

/* Common Section Headers */
.section-container {
  padding: 5rem 0 3rem 0;
  border-top: 1px solid rgba(45, 63, 51, 0.08);
}

.section-header {
  text-align: center;
  max-width: 620px;
  margin: 0 auto 3rem auto;
}

.section-tagline {
  font-size: 0.72rem;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: var(--color-restoration-muted);
  font-weight: 600;
  display: block;
  margin-bottom: 0.6rem;
}

.section-title {
  font-family: var(--font-serif);
  font-size: clamp(1.8rem, 3.8vw, 2.5rem);
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-restoration);
  line-height: 1.15;
}

.section-divider {
  width: 44px;
  height: 1px;
  background: var(--color-radiance);
  margin: 1.1rem auto;
}

.section-desc {
  font-size: 0.9rem;
  color: var(--color-restoration-muted);
  line-height: 1.65;
}

/* ==========================================================================
   Hero Section
   ========================================================================== */
.hero-section {
  padding: 4.5rem 0 5rem 0;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.top-tagline {
  font-size: 0.72rem;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  font-weight: 600;
  color: var(--color-restoration-muted);
  margin-bottom: 1.5rem;
}

.brand-emblem-wrap {
  margin: 0.5rem 0 1.5rem 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.brand-emblem-img {
  width: 190px;
  height: 190px;
  display: block;
  object-fit: contain;
  transition: transform 0.4s ease;
}

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

.brand-subline {
  font-family: var(--font-serif);
  font-size: clamp(1.4rem, 3.2vw, 1.85rem);
  font-weight: 500;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: var(--color-radiance-deep);
  margin-bottom: 1.25rem;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1.25rem;
  width: 100%;
}

.brand-subline::before,
.brand-subline::after {
  content: '';
  flex: 1;
  max-width: 48px;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--color-radiance));
}

.brand-subline::after {
  background: linear-gradient(90deg, var(--color-radiance), transparent);
}

.hero-intro {
  font-size: 1rem;
  color: var(--color-restoration-muted);
  max-width: 520px;
  line-height: 1.7;
  margin-bottom: 2.25rem;
}

.hero-actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  flex-wrap: wrap;
}

.primary-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  background-color: var(--color-restoration);
  color: var(--color-substrate);
  font-family: var(--font-sans);
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  text-decoration: none;
  padding: 0.95rem 2.2rem;
  border-radius: 9999px;
  border: 1px solid rgba(193, 127, 68, 0.28);
  box-shadow: 0 6px 22px -4px rgba(45, 63, 51, 0.18);
  transition: var(--transition);
}

.primary-btn .btn-arrow {
  color: var(--color-radiance);
  transition: transform 0.3s ease;
}

.primary-btn:hover {
  background-color: var(--color-restoration-light);
  border-color: var(--color-radiance);
  box-shadow: 0 8px 28px -4px rgba(45, 63, 51, 0.26);
  transform: translateY(-2px);
  color: #FFFFFF;
}

.primary-btn:hover .btn-arrow {
  transform: translateX(4px);
  color: #FFFFFF;
}

.secondary-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  background-color: transparent;
  color: var(--color-restoration);
  font-family: var(--font-sans);
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  text-decoration: none;
  padding: 0.92rem 1.85rem;
  border-radius: 9999px;
  border: 1px solid rgba(45, 63, 51, 0.2);
  transition: var(--transition);
}

.secondary-btn .btn-arrow {
  color: var(--color-radiance-deep);
  transition: transform 0.3s ease;
}

.secondary-btn:hover {
  border-color: var(--color-radiance);
  color: var(--color-radiance-deep);
  background: rgba(255, 255, 255, 0.4);
}

.secondary-btn:hover .btn-arrow {
  transform: translateY(3px);
}

/* ==========================================================================
   Treatment Menu & Cards
   ========================================================================== */
.treatment-group {
  margin-bottom: 3.5rem;
}

.group-header {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  margin-bottom: 1.5rem;
}

.group-header .spark-icon {
  color: var(--color-radiance);
  font-size: 0.9rem;
}

.group-title {
  font-family: var(--font-serif);
  font-size: 1.35rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-restoration);
}

/* Signature Featured Grid (2 Columns) */
.signature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 1.5rem;
}

.treatment-card {
  background: #FFFFFF;
  border: 1px solid var(--color-substrate-border);
  border-radius: 18px;
  padding: 1.75rem;
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  transition: var(--transition);
  position: relative;
}

.treatment-card:hover {
  transform: translateY(-3px);
  border-color: rgba(193, 127, 68, 0.35);
  box-shadow: var(--shadow-md);
}

.featured-card {
  border: 1px solid rgba(193, 127, 68, 0.25);
  background: linear-gradient(180deg, #FFFFFF 0%, #FAF8F4 100%);
}

.card-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.8rem;
  margin-bottom: 0.85rem;
}

.treatment-badge {
  font-size: 0.68rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-radiance-deep);
  background: var(--color-radiance-soft);
  padding: 0.25rem 0.65rem;
  border-radius: 9999px;
}

.price-lockup {
  display: flex;
  align-items: baseline;
  gap: 0.45rem;
  margin-left: auto;
}

.price-lockup .price {
  font-family: var(--font-serif);
  font-size: 1.55rem;
  font-weight: 600;
  color: var(--color-restoration);
  line-height: 1;
}

.price-lockup .duration {
  font-size: 0.74rem;
  color: var(--color-restoration-subtle);
  font-weight: 500;
}

.treatment-name {
  font-family: var(--font-serif);
  font-size: 1.45rem;
  font-weight: 500;
  color: var(--color-restoration);
  letter-spacing: 0.04em;
  margin-bottom: 0.35rem;
  line-height: 1.2;
}

.treatment-detail {
  font-size: 0.76rem;
  color: var(--color-radiance-deep);
  font-weight: 500;
  letter-spacing: 0.04em;
  margin-bottom: 0.85rem;
}

.treatment-summary {
  font-size: 0.86rem;
  color: var(--color-restoration-muted);
  line-height: 1.6;
  margin-bottom: 1.75rem;
  flex: 1;
}

.card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 1rem;
  border-top: 1px solid rgba(45, 63, 51, 0.07);
}

.deposit-note {
  font-size: 0.72rem;
  color: var(--color-restoration-subtle);
  letter-spacing: 0.02em;
}

.card-book-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.76rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-restoration);
  text-decoration: none;
  background: rgba(45, 63, 51, 0.06);
  padding: 0.5rem 1rem;
  border-radius: 9999px;
  transition: var(--transition);
}

.card-book-btn .arrow {
  color: var(--color-radiance-deep);
  transition: transform 0.25s ease;
}

.card-book-btn:hover {
  background: var(--color-restoration);
  color: var(--color-substrate);
}

.card-book-btn:hover .arrow {
  color: var(--color-substrate);
  transform: translateX(3px);
}

/* Individual Essentials Grid (3 Columns) */
.essentials-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.25rem;
}

.standard-card {
  padding: 1.5rem;
}

.standard-card .treatment-name {
  font-size: 1.25rem;
}

/* Student Banner & Items */
.student-banner {
  background: #FFFFFF;
  border: 1px solid rgba(193, 127, 68, 0.25);
  border-radius: 18px;
  padding: 1.75rem;
  box-shadow: var(--shadow-sm);
}

.student-header {
  display: flex;
  align-items: center;
  gap: 0.8rem;
  flex-wrap: wrap;
  margin-bottom: 0.5rem;
}

.student-tag {
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-substrate);
  background: var(--color-restoration);
  padding: 0.28rem 0.75rem;
  border-radius: 9999px;
}

.student-id-notice {
  font-size: 0.76rem;
  color: var(--color-radiance-deep);
  font-weight: 500;
}

.student-desc {
  font-size: 0.85rem;
  color: var(--color-restoration-muted);
  margin-bottom: 1.35rem;
}

.student-cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1rem;
}

.student-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  background: var(--color-substrate-card);
  padding: 1.1rem 1.25rem;
  border-radius: 12px;
  border: 1px solid rgba(45, 63, 51, 0.08);
}

.student-item-title {
  font-family: var(--font-serif);
  font-size: 1.15rem;
  font-weight: 500;
  color: var(--color-restoration);
}

.student-item-sub {
  font-size: 0.74rem;
  color: var(--color-radiance-deep);
  font-weight: 500;
  display: block;
  margin: 0.15rem 0 0.2rem 0;
}

.student-item-meta {
  font-size: 0.72rem;
  color: var(--color-restoration-subtle);
  display: block;
}

.student-item-action {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.student-price {
  font-family: var(--font-serif);
  font-size: 1.35rem;
  font-weight: 600;
  color: var(--color-restoration);
}

.student-btn {
  font-size: 0.74rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-substrate);
  background: var(--color-restoration);
  padding: 0.45rem 0.9rem;
  border-radius: 9999px;
  text-decoration: none;
  transition: var(--transition);
}

.student-btn:hover {
  background: var(--color-restoration-light);
  transform: translateY(-1px);
}

/* ==========================================================================
   Complimentary Patch Test Spotlight
   ========================================================================== */
.patch-test-card {
  background: linear-gradient(135deg, #FAF7F2 0%, #F5EFE3 100%);
  border: 1px solid rgba(193, 127, 68, 0.35);
  border-radius: 22px;
  padding: 2.5rem;
  box-shadow: var(--shadow-md);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2.5rem;
}

.patch-test-content {
  flex: 1;
}

.patch-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-radiance-deep);
  margin-bottom: 0.5rem;
}

.patch-title {
  font-family: var(--font-serif);
  font-size: clamp(1.6rem, 3vw, 2.1rem);
  font-weight: 500;
  color: var(--color-restoration);
  letter-spacing: 0.04em;
  margin-bottom: 0.35rem;
  line-height: 1.2;
}

.patch-meta {
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: #2F6F4E;
  margin-bottom: 0.85rem;
}

.patch-desc {
  font-size: 0.9rem;
  color: var(--color-restoration);
  line-height: 1.65;
  margin-bottom: 0.5rem;
}

.patch-note {
  font-size: 0.82rem;
  color: var(--color-restoration-muted);
}

.patch-action-box {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  min-width: 220px;
}

.patch-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  background-color: var(--color-restoration);
  color: var(--color-substrate);
  font-family: var(--font-sans);
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  text-decoration: none;
  padding: 0.85rem 1.75rem;
  border-radius: 9999px;
  border: 1px solid rgba(193, 127, 68, 0.3);
  box-shadow: 0 4px 14px rgba(45, 63, 51, 0.15);
  transition: var(--transition);
  white-space: nowrap;
}

.patch-btn .btn-arrow {
  color: var(--color-radiance);
  transition: transform 0.25s ease;
}

.patch-btn:hover {
  background-color: var(--color-restoration-light);
  transform: translateY(-2px);
  color: #FFFFFF;
}

.patch-btn:hover .btn-arrow {
  transform: translateX(4px);
  color: #FFFFFF;
}

.patch-caption {
  font-size: 0.7rem;
  color: var(--color-restoration-subtle);
  letter-spacing: 0.02em;
}

/* ==========================================================================
   Client Care & Etiquette Pillars
   ========================================================================== */
.etiquette-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.5rem;
  margin-bottom: 4.5rem;
}

.etiquette-card {
  background: #FFFFFF;
  border: 1px solid var(--color-substrate-border);
  border-radius: 16px;
  padding: 1.75rem;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
}

.etiquette-card:hover {
  transform: translateY(-2px);
  border-color: rgba(193, 127, 68, 0.3);
}

.etiquette-icon {
  color: var(--color-radiance);
  font-size: 1.1rem;
  margin-bottom: 0.75rem;
}

.etiquette-title {
  font-family: var(--font-serif);
  font-size: 1.2rem;
  font-weight: 500;
  color: var(--color-restoration);
  letter-spacing: 0.04em;
  margin-bottom: 0.5rem;
}

.etiquette-desc {
  font-size: 0.84rem;
  color: var(--color-restoration-muted);
  line-height: 1.6;
}

/* ==========================================================================
   Got a Question? Contact Section
   ========================================================================== */
.contact-header {
  margin-top: 1rem;
}

.contact-cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 1.5rem;
}

.contact-card {
  background: #FFFFFF;
  border: 1px solid var(--color-substrate-border);
  border-radius: 20px;
  padding: 2rem;
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  transition: var(--transition);
}

.contact-card:hover {
  transform: translateY(-3px);
  border-color: rgba(193, 127, 68, 0.35);
  box-shadow: var(--shadow-md);
}

.contact-card-icon {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: var(--color-substrate-card);
  border: 1px solid rgba(193, 127, 68, 0.25);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-radiance-deep);
  margin-bottom: 1.25rem;
  transition: var(--transition);
}

.contact-card:hover .contact-card-icon {
  background: var(--color-restoration);
  color: var(--color-substrate);
  border-color: var(--color-restoration);
}

.contact-card-content {
  flex: 1;
  margin-bottom: 1.5rem;
}

.contact-method-title {
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--color-restoration-muted);
  margin-bottom: 0.35rem;
}

.contact-handle {
  font-family: var(--font-serif);
  font-size: 1.35rem;
  font-weight: 500;
  color: var(--color-restoration);
  margin-bottom: 0.65rem;
}

.contact-note {
  font-size: 0.84rem;
  color: var(--color-restoration-subtle);
  line-height: 1.55;
  max-width: 280px;
  margin: 0 auto;
}

.contact-action-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  font-size: 0.76rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-substrate);
  background-color: var(--color-restoration);
  text-decoration: none;
  padding: 0.75rem 1.6rem;
  border-radius: 9999px;
  border: 1px solid rgba(193, 127, 68, 0.25);
  transition: var(--transition);
  width: 100%;
  justify-content: center;
}

.contact-action-btn:hover {
  background-color: var(--color-restoration-light);
  transform: translateY(-1px);
  box-shadow: 0 4px 14px rgba(45, 63, 51, 0.15);
}

/* ==========================================================================
   Site Footer
   ========================================================================== */
.site-footer {
  margin-top: 5rem;
  padding: 4rem 0 2rem 0;
  border-top: 1px solid rgba(45, 63, 51, 0.12);
  display: flex;
  flex-direction: column;
  gap: 2.5rem;
}

.footer-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 2rem;
}

.footer-brand {
  display: flex;
  flex-direction: column;
}

.footer-logo-img {
  width: 56px;
  height: 56px;
  object-fit: contain;
  margin-bottom: 0.5rem;
}

.footer-brand-name {
  font-family: var(--font-serif);
  font-size: 1.3rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-restoration);
}

.footer-tagline {
  font-size: 0.72rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--color-radiance-deep);
}

.footer-nav {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  flex-wrap: wrap;
}

.footer-nav a {
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-restoration-muted);
  text-decoration: none;
  font-weight: 500;
  transition: var(--transition);
}

.footer-nav a:hover {
  color: var(--color-radiance-deep);
}

.footer-bottom {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.75rem;
  text-align: center;
  padding-top: 2rem;
  border-top: 1px solid rgba(45, 63, 51, 0.06);
}

.footer-social-icons {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.85rem;
}

.footer-icon-btn {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--color-substrate-card);
  border: 1px solid rgba(45, 63, 51, 0.14);
  color: var(--color-restoration-muted);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
  text-decoration: none;
}

.footer-icon-btn:hover {
  background: var(--color-restoration);
  color: var(--color-substrate);
  border-color: var(--color-restoration);
  transform: translateY(-2px);
  box-shadow: 0 4px 14px rgba(45, 63, 51, 0.16);
}

.footer-icon-btn svg {
  display: block;
  transition: transform 0.25s ease;
}

.footer-icon-btn:hover svg {
  transform: scale(1.08);
}

.footer-copy {
  font-size: 0.72rem;
  color: var(--color-restoration-subtle);
  letter-spacing: 0.03em;
}

.back-to-top {
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-radiance-deep);
  text-decoration: none;
  margin-top: 0.5rem;
  font-weight: 600;
  transition: var(--transition);
}

.back-to-top:hover {
  color: var(--color-restoration);
  transform: translateY(-2px);
}

/* ==========================================================================
   Responsive Breakpoints
   ========================================================================== */
@media (max-width: 820px) {
  .nav-menu {
    display: none;
  }

  .patch-test-card {
    flex-direction: column;
    text-align: center;
    gap: 1.75rem;
  }

  .footer-top {
    flex-direction: column;
    text-align: center;
    align-items: center;
  }

  .footer-brand {
    align-items: center;
  }

  .footer-nav {
    justify-content: center;
  }
}

@media (max-width: 580px) {
  .page-container {
    padding: 0 1rem 3rem 1rem;
  }

  .section-container {
    padding: 3.5rem 0 2rem 0;
  }

  .brand-emblem-img {
    width: 150px;
    height: 150px;
  }

  .hero-actions {
    flex-direction: column;
    width: 100%;
  }

  .primary-btn, .secondary-btn {
    width: 100%;
    justify-content: center;
  }

  .student-item {
    flex-direction: column;
    align-items: flex-start;
  }

  .student-item-action {
    width: 100%;
    justify-content: space-between;
    margin-top: 0.5rem;
  }

  .contact-cards-grid {
    grid-template-columns: 1fr;
  }
}