/* ============================================================
   P&L Billing Solutions — Liquid Glass Component System
   ============================================================ */

/* ── Base Glass Surface ── */
.glass {
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: 1px solid var(--glass-border);
  border-radius: var(--r-xl);
  box-shadow: var(--elev-glass);
  position: relative;
  isolation: isolate;
  transition: transform var(--transition-base), box-shadow var(--transition-base);
}

/* Edge glow on hover — the "liquid" highlight */
.glass::before {
  content: "";
  position: absolute;
  inset: -1px;
  border-radius: inherit;
  padding: 1px;
  background: linear-gradient(
    135deg,
    rgba(255,255,255,0.8) 0%,
    rgba(184,212,255,0.4) 40%,
    rgba(30,111,255,0.6) 100%
  );
  -webkit-mask:
    linear-gradient(#000 0 0) content-box,
    linear-gradient(#000 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  opacity: 0;
  transition: opacity 400ms ease;
  pointer-events: none;
  z-index: 1;
}
.glass:hover::before,
.glass:focus-within::before { opacity: 1; }

/* Specular highlight — the iOS 26 "wet" look */
.glass::after {
  content: "";
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 50%;
  border-radius: var(--r-xl) var(--r-xl) 0 0;
  background: linear-gradient(
    180deg,
    rgba(255,255,255,0.45) 0%,
    rgba(255,255,255,0) 100%
  );
  pointer-events: none;
  z-index: -1;
}

/* ── Glass Variants ── */
.glass--elevated {
  box-shadow: var(--elev-3), inset 0 1px 0 rgba(255,255,255,0.7);
}
.glass--elevated:hover {
  transform: translateY(-4px);
  box-shadow: var(--elev-glow-blue), inset 0 1px 0 rgba(255,255,255,0.7);
}

.glass--dark {
  background: var(--glass-bg-dark);
  border-color: rgba(255,255,255,0.12);
  box-shadow: 0 8px 32px rgba(0,0,0,0.3), inset 0 1px 0 rgba(255,255,255,0.08);
}
.glass--dark::after {
  background: linear-gradient(
    180deg,
    rgba(255,255,255,0.08) 0%,
    rgba(255,255,255,0) 100%
  );
}

.glass--glow {
  box-shadow: var(--elev-glass), var(--glass-glow);
}

/* ── Glass Buttons ── */
.glass-btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-8);
  padding: 14px 28px;
  border-radius: var(--r-pill);
  font-family: inherit;
  font-size: var(--text-small);
  font-weight: 600;
  letter-spacing: 0.01em;
  cursor: pointer;
  border: none;
  text-decoration: none;
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
  white-space: nowrap;
}

.glass-btn::before {
  content: '';
  position: absolute;
  inset: 0;
  background: rgba(255,255,255,0.15);
  opacity: 0;
  transition: opacity var(--transition-fast);
  border-radius: inherit;
}
.glass-btn:hover::before { opacity: 1; }

.glass-btn--primary {
  background: var(--uf-blue-500);
  color: var(--uf-white);
  box-shadow: 0 4px 20px rgba(30,111,255,0.4), inset 0 1px 0 rgba(255,255,255,0.2);
}
.glass-btn--primary:hover {
  background: var(--uf-blue-400);
  transform: translateY(-2px);
  box-shadow: 0 8px 32px rgba(30,111,255,0.55), inset 0 1px 0 rgba(255,255,255,0.2);
}
.glass-btn--primary:active {
  transform: translateY(0);
}

.glass-btn--ghost {
  background: rgba(255,255,255,0.12);
  color: var(--uf-white);
  border: 1px solid rgba(255,255,255,0.3);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}
.glass-btn--ghost:hover {
  background: rgba(255,255,255,0.22);
  border-color: rgba(255,255,255,0.5);
  transform: translateY(-2px);
}

.glass-btn--ghost-dark {
  background: rgba(10,37,64,0.08);
  color: var(--uf-blue-500);
  border: 1.5px solid var(--uf-blue-500);
}
.glass-btn--ghost-dark:hover {
  background: var(--uf-blue-50);
  transform: translateY(-2px);
}

.glass-btn--sm {
  padding: 10px 20px;
  font-size: var(--text-micro);
}
.glass-btn--lg {
  padding: 18px 36px;
  font-size: var(--text-body);
}

/* ── Glass Nav ── */
.glass-nav {
  background: rgba(10, 37, 64, 0.72);
  backdrop-filter: blur(28px) saturate(200%);
  -webkit-backdrop-filter: blur(28px) saturate(200%);
  border-bottom: 1px solid rgba(255,255,255,0.08);
  box-shadow: 0 1px 0 rgba(255,255,255,0.05), 0 4px 24px rgba(0,0,0,0.2);
}

/* ── KPI Cards ── */
.kpi-card {
  padding: var(--space-24) var(--space-32);
  text-align: center;
  min-width: 180px;
}

.kpi-value {
  font-size: 2.25rem;
  font-weight: 700;
  color: var(--uf-white);
  line-height: 1;
  font-variant-numeric: tabular-nums;
  letter-spacing: -0.02em;
}

.kpi-label {
  font-size: var(--text-micro);
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--uf-blue-200);
  margin-top: var(--space-8);
}

.kpi-trend {
  font-size: var(--text-small);
  font-weight: 500;
  color: var(--uf-success);
  margin-top: var(--space-4);
}

/* ── Lane Cards ── */
.lane-card {
  padding: var(--space-48) var(--space-32);
  cursor: pointer;
  flex: 1;
  min-width: 220px;
  transition: transform var(--transition-base), box-shadow var(--transition-base);
}
.lane-card:hover {
  transform: translateY(-6px);
}

.lane-icon {
  width: 56px; height: 56px;
  margin-bottom: var(--space-24);
  display: flex;
  align-items: center;
  justify-content: center;
}

.lane-connector {
  width: 48px; height: 2px;
  background: linear-gradient(90deg, var(--uf-blue-500), var(--uf-blue-200));
  border-radius: var(--r-pill);
  margin: 0 var(--space-8);
  flex-shrink: 0;
  position: relative;
  overflow: hidden;
  align-self: center;
}
.lane-connector::after {
  content: '';
  position: absolute;
  left: -100%; top: 0; bottom: 0; width: 100%;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.8), transparent);
  animation: pulse-right 2s ease-in-out infinite;
}
@keyframes pulse-right {
  0%   { left: -100%; }
  100% { left: 100%; }
}

/* ── Scroll Stack Cards ── */
.scroll-stack-card {
  position: sticky;
  top: 80px;
  padding: var(--space-96) var(--space-64);
  margin-bottom: var(--space-32);
  min-height: calc(100vh - 160px);
  display: flex;
  align-items: center;
  gap: var(--space-64);
}

.law-number {
  font-size: 15rem;
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.04em;
  color: rgba(30,111,255,0.08);
  position: absolute;
  right: var(--space-64);
  top: 50%;
  transform: translateY(-50%);
  user-select: none;
  pointer-events: none;
}

/* ── Animated Dashboard Mock ── */
.dashboard-mock {
  padding: var(--space-24);
  width: 100%;
}
.dash-bar-group { margin-bottom: var(--space-16); }
.dash-bar-label {
  font-size: var(--text-micro);
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--uf-silver);
  margin-bottom: var(--space-8);
  display: flex;
  justify-content: space-between;
}
.dash-bar-track {
  height: 8px;
  background: var(--uf-fog);
  border-radius: var(--r-pill);
  overflow: hidden;
}
.dash-bar-fill {
  height: 100%;
  border-radius: var(--r-pill);
  background: linear-gradient(90deg, var(--uf-blue-500), var(--uf-blue-400));
  transform-origin: left;
  transition: width 1.5s cubic-bezier(0.16, 1, 0.3, 1);
}
.dash-bar-fill--green {
  background: linear-gradient(90deg, var(--uf-success), #34D399);
}
.dash-bar-fill--amber {
  background: linear-gradient(90deg, var(--uf-warning), #FCD34D);
}

.dash-ticker {
  display: flex;
  align-items: center;
  gap: var(--space-8);
  padding: var(--space-12) var(--space-16);
  background: var(--uf-mist);
  border-radius: var(--r-md);
  margin-bottom: var(--space-8);
  font-size: var(--text-small);
  animation: ticker-slide 0.4s ease-out both;
}
.dash-ticker-dot {
  width: 8px; height: 8px;
  border-radius: 50%;
  flex-shrink: 0;
}
.dash-ticker-dot--green  { background: var(--uf-success); }
.dash-ticker-dot--blue   { background: var(--uf-blue-500); }
.dash-ticker-dot--amber  { background: var(--uf-warning); }
@keyframes ticker-slide {
  from { opacity: 0; transform: translateX(-8px); }
  to   { opacity: 1; transform: translateX(0); }
}

/* ── Eyebrow / Micro Label ── */
.eyebrow {
  font-size: var(--text-micro);
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--uf-blue-400);
  display: inline-block;
  margin-bottom: var(--space-16);
}
.eyebrow--white { color: rgba(255,255,255,0.6); }

/* ── Section utilities ── */
.section {
  padding: var(--space-section) 0;
}
.section--dark {
  background: var(--uf-blue-900);
  color: var(--uf-white);
}
.section--mist {
  background: var(--uf-mist);
}
.section--navy-deep {
  background: linear-gradient(180deg, #061829 0%, var(--uf-blue-900) 100%);
  color: var(--uf-white);
}

.container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 var(--space-96);
}
@media (max-width: 1100px) {
  .container { padding: 0 var(--space-48); }
}
@media (max-width: 768px) {
  .container { padding: 0 var(--space-24); }
}

/* ── Divider ── */
.divider {
  height: 1px;
  background: var(--uf-fog);
  border: none;
  margin: 0;
}

/* ── Glow Orb (decorative) ── */
.glow-orb {
  position: absolute;
  border-radius: 50%;
  pointer-events: none;
  filter: blur(80px);
  opacity: 0.45;
}
.glow-orb--blue  { background: var(--uf-blue-500); }
.glow-orb--indigo { background: #4F46E5; }
.glow-orb--teal  { background: #06B6D4; }

/* ── Animations ── */
.fade-up {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s cubic-bezier(0.16,1,0.3,1);
}
.fade-up.visible {
  opacity: 1;
  transform: translateY(0);
}
.fade-in {
  opacity: 0;
  transition: opacity 0.6s ease;
}
.fade-in.visible { opacity: 1; }

/* Stagger delays */
.delay-1 { transition-delay: 0.1s; }
.delay-2 { transition-delay: 0.2s; }
.delay-3 { transition-delay: 0.3s; }
.delay-4 { transition-delay: 0.4s; }
.delay-5 { transition-delay: 0.5s; }
.delay-6 { transition-delay: 0.6s; }

/* ── Compliance badge ── */
.compliance-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-8);
  padding: var(--space-8) var(--space-16);
  border-radius: var(--r-pill);
  font-size: var(--text-micro);
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  background: rgba(16,185,129,0.12);
  color: var(--uf-success);
  border: 1px solid rgba(16,185,129,0.25);
}

/* ── Responsive grids ── */
.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-32);
}
.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-32);
}
.grid-4 {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-24);
}
@media (max-width: 1024px) {
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 768px) {
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
}

/* ── Text utilities ── */
.text-gradient-blue {
  background: linear-gradient(135deg, var(--uf-blue-400) 0%, var(--uf-blue-200) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.text-gradient-white {
  background: linear-gradient(180deg, #FFFFFF 60%, rgba(255,255,255,0.55) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ── Shimmer animation ── */
@keyframes shimmer {
  0%   { background-position: -200% center; }
  100% { background-position: 200% center; }
}
.shimmer {
  background: linear-gradient(
    90deg,
    rgba(255,255,255,0) 0%,
    rgba(255,255,255,0.4) 50%,
    rgba(255,255,255,0) 100%
  );
  background-size: 200% auto;
  animation: shimmer 2.5s linear infinite;
}

/* ── Scroll indicator ── */
@keyframes scroll-bounce {
  0%, 100% { transform: translateY(0); }
  50%       { transform: translateY(6px); }
}
.scroll-indicator {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-8);
  animation: scroll-bounce 2s ease-in-out infinite;
  opacity: 0.5;
}

/* ── Tag pill ── */
.tag-pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 12px;
  border-radius: var(--r-pill);
  font-size: var(--text-micro);
  font-weight: 600;
  letter-spacing: 0.04em;
  background: var(--uf-blue-50);
  color: var(--uf-blue-500);
  border: 1px solid rgba(30,111,255,0.15);
}
.tag-pill--dark {
  background: rgba(30,111,255,0.12);
  color: var(--uf-blue-200);
  border-color: rgba(184,212,255,0.2);
}

/* ── Check list ── */
.check-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: var(--space-16);
}
.check-list li {
  display: flex;
  align-items: flex-start;
  gap: var(--space-12);
  font-size: var(--text-body);
  color: var(--uf-slate);
  line-height: 1.6;
}
.check-list li::before {
  content: '';
  width: 20px; height: 20px;
  background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 20 20'%3E%3Ccircle cx='10' cy='10' r='10' fill='%2310B981' fill-opacity='0.15'/%3E%3Cpath d='M6 10l3 3 5-5' stroke='%2310B981' stroke-width='1.8' stroke-linecap='round' stroke-linejoin='round' fill='none'/%3E%3C/svg%3E") no-repeat center / contain;
  flex-shrink: 0;
  margin-top: 2px;
}
.check-list--white li { color: rgba(255,255,255,0.78); }

/* ── Stat block ── */
.stat-block {
  text-align: center;
}
.stat-value {
  font-size: var(--text-display);
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--uf-blue-500);
  line-height: 1;
  font-variant-numeric: tabular-nums;
}
.stat-label {
  font-size: var(--text-small);
  color: var(--uf-silver);
  margin-top: var(--space-8);
  font-weight: 500;
}

/* ── Form elements ── */
.form-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-8);
}
.form-label {
  font-size: var(--text-small);
  font-weight: 600;
  color: var(--uf-slate);
  letter-spacing: 0.01em;
}
.form-input,
.form-select,
.form-textarea {
  width: 100%;
  padding: 14px 18px;
  border-radius: var(--r-md);
  border: 1.5px solid var(--uf-fog);
  background: var(--uf-white);
  font-family: inherit;
  font-size: var(--text-body);
  color: var(--uf-graphite);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
  outline: none;
  box-sizing: border-box;
}
.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  border-color: var(--uf-blue-500);
  box-shadow: 0 0 0 3px rgba(30,111,255,0.12);
}
.form-textarea { resize: vertical; min-height: 120px; }
.form-input::placeholder,
.form-textarea::placeholder { color: var(--uf-silver); }

/* ── Page hero for inner pages ── */
.page-hero {
  padding: 140px 0 80px;
  background: linear-gradient(160deg, #061829 0%, var(--uf-blue-900) 60%, #0E3A6B 100%);
  color: var(--uf-white);
  position: relative;
  overflow: hidden;
}

/* ── Responsive nav helpers ── */
@media (max-width: 900px) {
  .nav-links { display: none !important; }
  #hamburger { display: flex !important; }
  #mobile-menu.open { display: flex !important; }
}

/* ── Focus ring (accessibility) ── */
:focus-visible {
  outline: 2px solid var(--uf-blue-400);
  outline-offset: 3px;
  border-radius: 4px;
}

/* ── Skip to content ── */
.skip-link {
  position: absolute;
  top: -100%;
  left: var(--space-16);
  z-index: 9999;
  padding: var(--space-8) var(--space-16);
  background: var(--uf-blue-500);
  color: var(--uf-white);
  border-radius: 0 0 var(--r-sm) var(--r-sm);
  font-size: var(--text-small);
  font-weight: 600;
  text-decoration: none;
  transition: top var(--transition-fast);
}
.skip-link:focus { top: 0; }

/* ── Horizontal pipeline ── */
.pipeline-row {
  display: flex;
  align-items: stretch;
  gap: 0;
  overflow-x: auto;
  padding-bottom: var(--space-8);
  scrollbar-width: none;
}
.pipeline-row::-webkit-scrollbar { display: none; }

/* ── Breadcrumb ── */
.breadcrumb {
  display: flex;
  align-items: center;
  gap: var(--space-8);
  font-size: var(--text-small);
  color: rgba(255,255,255,0.5);
  margin-bottom: var(--space-24);
}
.breadcrumb a {
  color: rgba(255,255,255,0.5);
  text-decoration: none;
  transition: color var(--transition-fast);
}
.breadcrumb a:hover { color: var(--uf-white); }
.breadcrumb span { color: rgba(255,255,255,0.25); }

/* ── Active nav link ── */
.nav-link.active {
  color: var(--uf-white) !important;
}
.nav-link.active::after {
  opacity: 1 !important;
}