/* ═══════════════════════════════════════════
   Poefje — Design System
   A vibrant, mobile-first design for shared
   expense tracking.
   ═══════════════════════════════════════════ */

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

/* ── CSS Custom Properties ───────────────── */
:root {
  /* Brand palette */
  --pf-primary: #10B981;
  --pf-primary-dark: #059669;
  --pf-primary-darker: #047857;
  --pf-primary-light: #D1FAE5;
  --pf-primary-lighter: #ECFDF5;
  --pf-secondary: #0EA5E9;
  --pf-secondary-dark: #0284C7;
  --pf-secondary-light: #E0F2FE;
  --pf-accent: #F59E0B;
  --pf-accent-dark: #D97706;
  --pf-accent-light: #FEF3C7;

  /* Neutrals */
  --pf-bg: #F8FAFC;
  --pf-surface: #FFFFFF;
  --pf-text: #0F172A;
  --pf-text-secondary: #64748B;
  --pf-text-muted: #94A3B8;
  --pf-border: #E2E8F0;
  --pf-border-light: #F1F5F9;

  /* Semantic */
  --pf-success: #10B981;
  --pf-success-light: #D1FAE5;
  --pf-danger: #EF4444;
  --pf-danger-light: #FEE2E2;
  --pf-warning: #F59E0B;
  --pf-warning-light: #FEF3C7;
  --pf-info: #0EA5E9;
  --pf-info-light: #E0F2FE;

  /* Typography */
  --pf-font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --pf-font-mono: 'SF Mono', 'Fira Code', 'Fira Mono', monospace;

  /* Spacing */
  --pf-radius-sm: 8px;
  --pf-radius-md: 12px;
  --pf-radius-lg: 16px;
  --pf-radius-xl: 20px;
  --pf-radius-full: 9999px;

  /* Shadows */
  --pf-shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
  --pf-shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.07), 0 2px 4px -1px rgba(0, 0, 0, 0.04);
  --pf-shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.08), 0 4px 6px -2px rgba(0, 0, 0, 0.04);
  --pf-shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);

  /* Layout */
  --pf-nav-height: 64px;
  --pf-bottom-nav-height: 64px;
  --pf-content-max: 1200px;
  --pf-form-max: 480px;

  /* Transitions */
  --pf-transition: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  --pf-transition-slow: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ── Base ────────────────────────────────── */
*, *::before, *::after {
  box-sizing: border-box;
}

html {
  font-size: 15px;
  position: relative;
  min-height: 100%;
  scroll-behavior: smooth;
}

@media (min-width: 768px) {
  html { font-size: 16px; }
}

body {
  font-family: var(--pf-font);
  color: var(--pf-text);
  background-color: var(--pf-bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  margin-bottom: 0;
  padding-bottom: calc(var(--pf-bottom-nav-height) + 16px);
}

@media (min-width: 768px) {
  body {
    padding-bottom: 0;
  }
}

/* ── Typography ──────────────────────────── */
h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  line-height: 1.3;
  letter-spacing: -0.02em;
  color: var(--pf-text);
}

h1 { font-size: 1.75rem; }
h2 { font-size: 1.5rem; }
h3 { font-size: 1.25rem; }

@media (min-width: 768px) {
  h1 { font-size: 2rem; }
  h2 { font-size: 1.75rem; }
  h3 { font-size: 1.5rem; }
}

p { color: var(--pf-text-secondary); }

a {
  color: var(--pf-primary);
  text-decoration: none;
  transition: color var(--pf-transition);
}
a:hover { color: var(--pf-primary-dark); }

/* Tabular numbers for prices */
.pf-number {
  font-variant-numeric: tabular-nums;
  font-family: var(--pf-font);
}

/* ── Language Picker ──────────────────────── */
.pf-lang-form {
  display: flex;
  align-items: center;
  margin: 0 4px;
}

.pf-lang-select {
  appearance: none;
  -webkit-appearance: none;
  background: var(--pf-surface);
  border: 1px solid var(--pf-border);
  border-radius: var(--pf-radius-sm);
  padding: 6px 28px 6px 10px;
  font-family: var(--pf-font);
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--pf-text-secondary);
  cursor: pointer;
  transition: all var(--pf-transition);
  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='%2394A3B8' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 8px center;
  line-height: 1.4;
}

.pf-lang-select:hover,
.pf-lang-select:focus {
  color: var(--pf-text);
  border-color: var(--pf-primary);
  outline: none;
  box-shadow: 0 0 0 3px var(--pf-primary-lighter);
}

.pf-lang-select-mobile {
  font-size: 0.8rem;
  padding: 4px 24px 4px 6px;
  border: none;
  background: transparent;
  color: var(--pf-text-secondary);
  font-family: var(--pf-font);
  font-weight: 500;
  cursor: pointer;
  appearance: none;
  -webkit-appearance: none;
  transition: all var(--pf-transition);
}

.pf-lang-select-mobile:hover,
.pf-lang-select-mobile:focus {
  border: 1px solid var(--pf-border);
  background: var(--pf-bg);
  border-radius: var(--pf-radius-sm);
  outline: none;
}

/* ── Top Navigation (Desktop) ────────────── */
.pf-topnav {
  display: none;
  position: sticky;
  top: 0;
  z-index: 1030;
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--pf-border);
  height: var(--pf-nav-height);
  padding: 0 24px;
}

@media (min-width: 768px) {
  .pf-topnav { display: flex; align-items: center; }
}

.pf-topnav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  max-width: var(--pf-content-max);
  margin: 0 auto;
}

.pf-topnav-brand {
  font-size: 1.35rem;
  font-weight: 800;
  color: var(--pf-primary);
  letter-spacing: -0.03em;
  display: flex;
  align-items: center;
  gap: 8px;
}
.pf-topnav-brand:hover { color: var(--pf-primary-dark); }

.pf-topnav-brand-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  background: var(--pf-primary);
  color: #fff;
  border-radius: var(--pf-radius-sm);
  font-size: 1.1rem;
}

.pf-topnav-links {
  display: flex;
  align-items: center;
  gap: 4px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.pf-topnav-links .nav-item { margin: 0; }

.pf-topnav-links .nav-link {
  padding: 8px 14px;
  border-radius: var(--pf-radius-sm);
  color: var(--pf-text-secondary);
  font-size: 0.9rem;
  font-weight: 500;
  transition: all var(--pf-transition);
}
.pf-topnav-links .nav-link:hover {
  color: var(--pf-text);
  background: var(--pf-bg);
}
.pf-topnav-links .nav-link.active {
  color: var(--pf-primary);
  background: var(--pf-primary-lighter);
}

.pf-topnav-links .nav-link.btn-link {
  background: none;
  border: none;
  cursor: pointer;
  font-family: inherit;
  padding: 8px 14px;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--pf-text-secondary);
  text-decoration: none;
}
.pf-topnav-links .nav-link.btn-link:hover {
  color: var(--pf-danger);
  background: var(--pf-danger-light);
}

/* ── Bottom Navigation (Mobile) ──────────── */
.pf-bottomnav {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 1030;
  display: flex;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-top: 1px solid var(--pf-border);
  height: var(--pf-bottom-nav-height);
  padding: 0 8px;
  justify-content: space-around;
  align-items: center;
}

@media (min-width: 768px) {
  .pf-bottomnav { display: none; }
}

.pf-bottomnav-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 2px;
  padding: 6px 12px;
  border-radius: var(--pf-radius-sm);
  color: var(--pf-text-muted);
  font-size: 0.65rem;
  font-weight: 500;
  text-decoration: none;
  transition: all var(--pf-transition);
  min-width: 56px;
  border: none;
  background: none;
  cursor: pointer;
  font-family: inherit;
}

.pf-bottomnav-item i {
  font-size: 1.35rem;
  transition: all var(--pf-transition);
}

.pf-bottomnav-item:hover {
  color: var(--pf-text-secondary);
  background: var(--pf-border-light);
}

.pf-bottomnav-item.active {
  color: var(--pf-primary);
}
.pf-bottomnav-item.active i {
  transform: scale(1.05);
}

/* ── Mobile Top Bar ──────────────────────── */
.pf-mobile-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 16px;
  background: var(--pf-surface);
  border-bottom: 1px solid var(--pf-border);
  position: sticky;
  top: 0;
  z-index: 1020;
}

@media (min-width: 768px) {
  .pf-mobile-header { display: none; }
}

.pf-mobile-header-brand {
  font-size: 1.2rem;
  font-weight: 800;
  color: var(--pf-primary);
  letter-spacing: -0.03em;
}

/* ── Page Container ──────────────────────── */
.pf-page {
  max-width: var(--pf-content-max);
  margin: 0 auto;
  padding: 16px;
}

@media (min-width: 768px) {
  .pf-page { padding: 24px 32px; }
}

/* ── Cards ───────────────────────────────── */
.pf-card {
  background: var(--pf-surface);
  border-radius: var(--pf-radius-md);
  border: 1px solid var(--pf-border);
  box-shadow: var(--pf-shadow-sm);
  transition: all var(--pf-transition);
}

.pf-card:hover {
  box-shadow: var(--pf-shadow-md);
}

.pf-card-header {
  padding: 16px 20px;
  border-bottom: 1px solid var(--pf-border-light);
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 8px;
}

.pf-card-body {
  padding: 20px;
}

.pf-card-footer {
  padding: 12px 20px;
  border-top: 1px solid var(--pf-border-light);
  background: var(--pf-bg);
  border-radius: 0 0 var(--pf-radius-md) var(--pf-radius-md);
}

/* ── Buttons ─────────────────────────────── */
.pf-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 20px;
  font-family: var(--pf-font);
  font-size: 0.9rem;
  font-weight: 600;
  border-radius: var(--pf-radius-full);
  border: 2px solid transparent;
  cursor: pointer;
  transition: all var(--pf-transition);
  text-decoration: none;
  line-height: 1.4;
}
.pf-btn:active { transform: scale(0.97); }

.pf-btn-primary {
  background: var(--pf-primary);
  color: #fff;
  border-color: var(--pf-primary);
}
.pf-btn-primary:hover {
  background: var(--pf-primary-dark);
  border-color: var(--pf-primary-dark);
  color: #fff;
  box-shadow: 0 4px 12px rgba(16, 185, 129, 0.35);
}

.pf-btn-secondary {
  background: var(--pf-surface);
  color: var(--pf-text);
  border-color: var(--pf-border);
}
.pf-btn-secondary:hover {
  background: var(--pf-bg);
  border-color: var(--pf-text-muted);
  color: var(--pf-text);
}

.pf-btn-outline-primary {
  background: transparent;
  color: var(--pf-primary);
  border-color: var(--pf-primary);
}
.pf-btn-outline-primary:hover {
  background: var(--pf-primary);
  color: #fff;
}

.pf-btn-danger {
  background: var(--pf-danger);
  color: #fff;
  border-color: var(--pf-danger);
}
.pf-btn-danger:hover {
  background: #DC2626;
  color: #fff;
}

.pf-btn-success {
  background: var(--pf-success);
  color: #fff;
  border-color: var(--pf-success);
}
.pf-btn-success:hover {
  background: var(--pf-primary-dark);
  color: #fff;
}

.pf-btn-sm {
  padding: 6px 14px;
  font-size: 0.8rem;
}

.pf-btn-lg {
  padding: 14px 28px;
  font-size: 1rem;
}

.pf-btn-link {
  background: none;
  border: none;
  color: var(--pf-text-secondary);
  padding: 8px 12px;
  font-weight: 500;
}
.pf-btn-link:hover {
  color: var(--pf-danger);
  background: var(--pf-danger-light);
  border-radius: var(--pf-radius-sm);
}

/* ── Floating Action Button ──────────────── */
.pf-fab {
  position: fixed;
  bottom: calc(var(--pf-bottom-nav-height) + 20px);
  right: 20px;
  z-index: 1020;
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: var(--pf-primary);
  color: #fff;
  border: none;
  font-size: 1.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 16px rgba(16, 185, 129, 0.4);
  cursor: pointer;
  transition: all var(--pf-transition);
}
.pf-fab:hover {
  background: var(--pf-primary-dark);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(16, 185, 129, 0.5);
  color: #fff;
}
.pf-fab:active { transform: scale(0.95); }

@media (min-width: 768px) {
  .pf-fab {
    bottom: 24px;
    right: 32px;
  }
}

/* ── Hero Section ────────────────────────── */
.pf-hero {
  position: relative;
  background: linear-gradient(135deg, #059669 0%, #10B981 40%, #34D399 100%);
  padding: 48px 24px;
  text-align: center;
  overflow: hidden;
}

@media (min-width: 768px) {
  .pf-hero {
    padding: 80px 32px;
  }
}

.pf-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    radial-gradient(circle at 20% 50%, rgba(255,255,255,0.1) 0%, transparent 50%),
    radial-gradient(circle at 80% 20%, rgba(255,255,255,0.08) 0%, transparent 50%),
    radial-gradient(circle at 40% 80%, rgba(255,255,255,0.06) 0%, transparent 50%);
  pointer-events: none;
}

.pf-hero-decor {
  position: absolute;
  inset: 0;
  overflow: hidden;
  pointer-events: none;
}

.pf-hero-decor-circle {
  position: absolute;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.06);
}

.pf-hero-decor-circle:nth-child(1) {
  width: 300px; height: 300px;
  top: -80px; right: -60px;
}

.pf-hero-decor-circle:nth-child(2) {
  width: 200px; height: 200px;
  bottom: -40px; left: -40px;
}

.pf-hero-decor-circle:nth-child(3) {
  width: 120px; height: 120px;
  top: 50%; left: 15%;
}

.pf-hero-content {
  position: relative;
  z-index: 1;
  max-width: 640px;
  margin: 0 auto;
}

.pf-hero-title {
  font-size: 2.5rem;
  font-weight: 800;
  color: #fff;
  letter-spacing: -0.03em;
  margin-bottom: 12px;
  line-height: 1.15;
}

@media (min-width: 768px) {
  .pf-hero-title { font-size: 3.5rem; }
}

.pf-hero-sub {
  font-size: 1.1rem;
  color: rgba(255, 255, 255, 0.85);
  margin-bottom: 8px;
  max-width: 520px;
  margin-left: auto;
  margin-right: auto;
}

@media (min-width: 768px) {
  .pf-hero-sub { font-size: 1.2rem; }
}

.pf-hero-text {
  font-size: 0.95rem;
  color: rgba(255, 255, 255, 0.75);
  margin-bottom: 28px;
  max-width: 480px;
  margin-left: auto;
  margin-right: auto;
}

.pf-hero-actions {
  display: flex;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
}

.pf-hero-actions .pf-btn {
  background: rgba(255, 255, 255, 0.2);
  color: #fff;
  border-color: rgba(255, 255, 255, 0.3);
  min-width: 140px;
}
.pf-hero-actions .pf-btn:hover {
  background: rgba(255, 255, 255, 0.3);
  border-color: rgba(255, 255, 255, 0.5);
}
.pf-hero-actions .pf-btn-primary {
  background: #fff;
  color: var(--pf-primary-dark);
  border-color: #fff;
}
.pf-hero-actions .pf-btn-primary:hover {
  background: rgba(255, 255, 255, 0.9);
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.15);
}

/* ── Feature Cards Grid ──────────────────── */
.pf-features {
  padding: 40px 16px;
  max-width: var(--pf-content-max);
  margin: 0 auto;
}

@media (min-width: 768px) {
  .pf-features { padding: 64px 32px; }
}

.pf-features-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
}

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

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

.pf-feature-card {
  background: var(--pf-surface);
  border: 1px solid var(--pf-border);
  border-radius: var(--pf-radius-lg);
  padding: 28px 24px;
  text-align: center;
  transition: all var(--pf-transition);
}

.pf-feature-card:hover {
  border-color: var(--pf-primary-light);
  box-shadow: var(--pf-shadow-lg);
  transform: translateY(-4px);
}

.pf-feature-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 56px;
  height: 56px;
  border-radius: var(--pf-radius-md);
  background: var(--pf-primary-lighter);
  color: var(--pf-primary);
  font-size: 1.5rem;
  margin-bottom: 16px;
}

.pf-feature-card h3 {
  font-size: 1.1rem;
  margin-bottom: 8px;
}

.pf-feature-card p {
  font-size: 0.9rem;
  color: var(--pf-text-secondary);
  margin: 0;
}

/* ── Summary Banner (Detail page) ────────── */
.pf-summary {
  border-radius: var(--pf-radius-lg);
  padding: 20px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}

.pf-summary-positive {
  background: linear-gradient(135deg, #D1FAE5 0%, #ECFDF5 100%);
  border: 1px solid #A7F3D0;
}

.pf-summary-negative {
  background: linear-gradient(135deg, #FEF3C7 0%, #FFFBEB 100%);
  border: 1px solid #FDE68A;
}

.pf-summary-neutral {
  background: var(--pf-bg);
  border: 1px solid var(--pf-border);
}

.pf-summary-label {
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--pf-text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.pf-summary-amount {
  font-size: 1.75rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  font-variant-numeric: tabular-nums;
}

.pf-summary-positive .pf-summary-amount { color: var(--pf-primary-dark); }
.pf-summary-negative .pf-summary-amount { color: var(--pf-accent-dark); }

.pf-summary-sub {
  font-size: 0.85rem;
  color: var(--pf-text-secondary);
}

/* ── Section Tabs (anchor links) ─────────── */
.pf-section-tabs {
  display: flex;
  gap: 4px;
  margin-bottom: 24px;
  background: var(--pf-surface);
  border: 1px solid var(--pf-border);
  border-radius: var(--pf-radius-md);
  padding: 4px;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.pf-section-tab {
  flex: 1;
  text-align: center;
  padding: 10px 16px;
  border-radius: var(--pf-radius-sm);
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--pf-text-secondary);
  text-decoration: none;
  white-space: nowrap;
  transition: all var(--pf-transition);
  border: none;
  background: none;
  cursor: pointer;
  font-family: inherit;
}

.pf-section-tab:hover {
  color: var(--pf-text);
  background: var(--pf-bg);
}

.pf-section-tab.active {
  color: var(--pf-primary);
  background: var(--pf-primary-lighter);
}

/* ── Content Sections (stacked, anchor-linked) ── */
.pf-section {
  margin-bottom: 24px;
}

.pf-section-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 12px;
}

.pf-section-title {
  font-size: 1rem;
  font-weight: 700;
  color: var(--pf-text);
  display: flex;
  align-items: center;
  gap: 8px;
  margin: 0;
}

/* ── List Items (Detail page items) ──────── */
.pf-item-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.pf-item-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 16px;
  background: var(--pf-surface);
  border: 1px solid var(--pf-border);
  border-radius: var(--pf-radius-sm);
  transition: all var(--pf-transition);
}

.pf-item-row:hover {
  border-color: var(--pf-primary-light);
  background: var(--pf-primary-lighter);
}

.pf-item-info {
  display: flex;
  align-items: center;
  gap: 12px;
  flex: 1;
  min-width: 0;
}

.pf-item-avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 0.85rem;
  color: #fff;
  flex-shrink: 0;
}

.pf-item-avatar.green { background: var(--pf-primary); }
.pf-item-avatar.blue { background: var(--pf-secondary); }
.pf-item-avatar.amber { background: var(--pf-accent); }
.pf-item-avatar.purple { background: #8B5CF6; }
.pf-item-avatar.pink { background: #EC4899; }
.pf-item-avatar.teal { background: #14B8A6; }

.pf-item-details {
  flex: 1;
  min-width: 0;
}

.pf-item-name {
  font-weight: 600;
  font-size: 0.9rem;
  color: var(--pf-text);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.pf-item-meta {
  font-size: 0.8rem;
  color: var(--pf-text-muted);
}

.pf-item-amount {
  font-weight: 700;
  font-size: 0.95rem;
  color: var(--pf-text);
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
  flex-shrink: 0;
}

.pf-item-actions {
  display: flex;
  gap: 8px;
  margin-left: 12px;
  flex-shrink: 0;
}

/* ── Member List ─────────────────────────── */
.pf-member-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.pf-member-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 16px;
  background: var(--pf-surface);
  border: 1px solid var(--pf-border);
  border-radius: var(--pf-radius-sm);
}

.pf-member-info {
  display: flex;
  align-items: center;
  gap: 12px;
}

.pf-member-avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 0.9rem;
  color: #fff;
  flex-shrink: 0;
}

.pf-member-email {
  font-weight: 500;
  font-size: 0.9rem;
  color: var(--pf-text);
}

.pf-member-role {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 4px 10px;
  border-radius: var(--pf-radius-full);
  font-size: 0.75rem;
  font-weight: 600;
}

.pf-role-admin {
  background: var(--pf-primary-lighter);
  color: var(--pf-primary-dark);
}

.pf-role-member {
  background: var(--pf-bg);
  color: var(--pf-text-secondary);
}

/* ── Balance Items ───────────────────────── */
.pf-balance-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.pf-balance-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 16px;
  background: var(--pf-surface);
  border: 1px solid var(--pf-border);
  border-radius: var(--pf-radius-sm);
}

.pf-balance-name {
  font-weight: 500;
  font-size: 0.9rem;
  display: flex;
  align-items: center;
  gap: 10px;
}

.pf-balance-amount {
  font-weight: 700;
  font-size: 1rem;
  font-variant-numeric: tabular-nums;
}

.pf-balance-positive { color: var(--pf-success); }
.pf-balance-negative { color: var(--pf-danger); }
.pf-balance-zero { color: var(--pf-text-muted); }

/* ── Pending Payment Item ────────────────── */
.pf-pending-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 16px;
  background: var(--pf-warning-light);
  border: 1px solid #FDE68A;
  border-radius: var(--pf-radius-sm);
}

.pf-pending-info {
  display: flex;
  align-items: center;
  gap: 10px;
}

.pf-pending-amount {
  font-weight: 700;
  font-size: 1rem;
  color: var(--pf-accent-dark);
  font-variant-numeric: tabular-nums;
}

/* ── Forms ───────────────────────────────── */
.pf-form {
  max-width: var(--pf-form-max);
  margin: 0 auto;
}

.pf-form-card {
  background: var(--pf-surface);
  border: 1px solid var(--pf-border);
  border-radius: var(--pf-radius-lg);
  padding: 28px 24px;
}

@media (min-width: 768px) {
  .pf-form-card { padding: 36px 32px; }
}

.pf-form-group {
  margin-bottom: 20px;
}

.pf-form-label {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--pf-text);
  margin-bottom: 6px;
}

.pf-form-input,
.pf-form-select {
  width: 100%;
  padding: 10px 14px;
  font-family: var(--pf-font);
  font-size: 0.9rem;
  color: var(--pf-text);
  background: var(--pf-surface);
  border: 2px solid var(--pf-border);
  border-radius: var(--pf-radius-sm);
  transition: all var(--pf-transition);
  appearance: none;
}

.pf-form-input:focus,
.pf-form-select:focus {
  outline: none;
  border-color: var(--pf-primary);
  box-shadow: 0 0 0 4px rgba(16, 185, 129, 0.12);
}

.pf-form-input.input-validation-error,
.pf-form-select.input-validation-error {
  border-color: var(--pf-danger);
  box-shadow: 0 0 0 4px rgba(239, 68, 68, 0.12);
}

.pf-form-input::placeholder {
  color: var(--pf-text-muted);
}

.pf-form-select {
  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='%2364748B' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 12px center;
  padding-right: 36px;
}

.pf-form-error {
  display: block;
  font-size: 0.8rem;
  color: var(--pf-danger);
  margin-top: 4px;
}

.pf-form-actions {
  display: flex;
  gap: 12px;
  margin-top: 28px;
}

.pf-form-actions .pf-btn {
  flex: 1;
}

/* ── Validation Summary ──────────────────── */
.pf-validation-summary {
  padding: 12px 16px;
  background: var(--pf-danger-light);
  border: 1px solid #FECACA;
  border-radius: var(--pf-radius-sm);
  color: var(--pf-danger);
  font-size: 0.85rem;
  margin-bottom: 20px;
}
.pf-validation-summary ul {
  margin: 4px 0 0;
  padding-left: 20px;
}

/* ── Alerts / Flash Messages ─────────────── */
.pf-alert {
  padding: 14px 18px;
  border-radius: var(--pf-radius-sm);
  font-size: 0.9rem;
  font-weight: 500;
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 20px;
  animation: pfSlideIn 0.3s ease-out;
}

@keyframes pfSlideIn {
  from { opacity: 0; transform: translateY(-8px); }
  to { opacity: 1; transform: translateY(0); }
}

.pf-alert-success {
  background: var(--pf-success-light);
  color: var(--pf-primary-dark);
  border: 1px solid #A7F3D0;
}

.pf-alert-danger {
  background: var(--pf-danger-light);
  color: #B91C1C;
  border: 1px solid #FECACA;
}

.pf-alert-info {
  background: var(--pf-info-light);
  color: var(--pf-secondary-dark);
  border: 1px solid #BAE6FD;
}

.pf-alert-warning {
  background: var(--pf-warning-light);
  color: var(--pf-accent-dark);
  border: 1px solid #FDE68A;
}

.pf-alert-dismiss {
  margin-left: auto;
  background: none;
  border: none;
  color: inherit;
  opacity: 0.6;
  cursor: pointer;
  padding: 4px;
  font-size: 1.1rem;
  line-height: 1;
}
.pf-alert-dismiss:hover { opacity: 1; }

/* ── Toast notifications ─────────────────── */
.pf-toast-container {
  position: fixed;
  top: 16px;
  right: 16px;
  left: 16px;
  z-index: 1060;
  display: flex;
  flex-direction: column;
  gap: 8px;
  pointer-events: none;
}

@media (min-width: 768px) {
  .pf-toast-container {
    left: auto;
    width: 380px;
  }
}

.pf-toast {
  pointer-events: auto;
  padding: 14px 18px;
  border-radius: var(--pf-radius-sm);
  font-size: 0.9rem;
  font-weight: 500;
  box-shadow: var(--pf-shadow-lg);
  animation: pfToastIn 0.35s ease-out;
  display: flex;
  align-items: center;
  gap: 10px;
}

@keyframes pfToastIn {
  from { opacity: 0; transform: translateX(20px); }
  to { opacity: 1; transform: translateX(0); }
}

@keyframes pfToastOut {
  from { opacity: 1; transform: translateX(0); }
  to { opacity: 0; transform: translateX(20px); }
}

/* ── Empty State ─────────────────────────── */
.pf-empty {
  text-align: center;
  padding: 48px 24px;
}

.pf-empty-icon {
  font-size: 3rem;
  color: var(--pf-text-muted);
  margin-bottom: 16px;
  display: block;
}

.pf-empty-image {
  max-width: 240px;
  height: auto;
  margin-bottom: 20px;
  border-radius: var(--pf-radius-md);
}

.pf-empty-title {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--pf-text);
  margin-bottom: 8px;
}

.pf-empty-text {
  font-size: 0.9rem;
  color: var(--pf-text-secondary);
  margin-bottom: 20px;
  max-width: 320px;
  margin-left: auto;
  margin-right: auto;
}

/* ── Back Link ───────────────────────────── */
.pf-back {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--pf-text-secondary);
  text-decoration: none;
  padding: 4px 0;
  margin-bottom: 8px;
  transition: color var(--pf-transition);
}
.pf-back:hover { color: var(--pf-primary); }

/* ── Page Header ─────────────────────────── */
.pf-page-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 24px;
}

.pf-page-header h1 {
  margin: 0;
}

/* ── Badge ───────────────────────────────── */
.pf-badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 3px 10px;
  border-radius: var(--pf-radius-full);
  font-size: 0.75rem;
  font-weight: 600;
  line-height: 1.4;
}

.pf-badge-primary { background: var(--pf-primary-lighter); color: var(--pf-primary-dark); }
.pf-badge-secondary { background: var(--pf-bg); color: var(--pf-text-secondary); }
.pf-badge-success { background: var(--pf-success-light); color: var(--pf-primary-dark); }
.pf-badge-warning { background: var(--pf-warning-light); color: var(--pf-accent-dark); }
.pf-badge-danger { background: var(--pf-danger-light); color: #B91C1C; }

/* ── Tables (desktop fallback) ───────────── */
.pf-table {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;
}

.pf-table th {
  padding: 12px 16px;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--pf-text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  background: var(--pf-bg);
  border-bottom: 1px solid var(--pf-border);
  text-align: left;
}

.pf-table th:first-child { border-radius: var(--pf-radius-sm) 0 0 0; }
.pf-table th:last-child { border-radius: 0 var(--pf-radius-sm) 0 0; }

.pf-table td {
  padding: 12px 16px;
  font-size: 0.9rem;
  border-bottom: 1px solid var(--pf-border-light);
}

.pf-table tr:last-child td { border-bottom: none; }

.pf-table tr:hover td {
  background: var(--pf-primary-lighter);
}

/* ── Identity / Auth Pages ───────────────── */
.pf-auth-page {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, #059669 0%, #10B981 50%, #34D399 100%);
  padding: 24px;
}

.pf-auth-card {
  background: var(--pf-surface);
  border-radius: var(--pf-radius-xl);
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
  padding: 32px 28px;
  width: 100%;
  max-width: 420px;
}

@media (min-width: 768px) {
  .pf-auth-card { padding: 40px 36px; }
}

.pf-auth-brand {
  text-align: center;
  margin-bottom: 24px;
}

.pf-auth-brand-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  background: var(--pf-primary);
  color: #fff;
  border-radius: var(--pf-radius-md);
  font-size: 1.5rem;
  margin-bottom: 12px;
}

.pf-auth-brand h1 {
  font-size: 1.5rem;
  margin: 0;
}

.pf-auth-brand p {
  font-size: 0.9rem;
  color: var(--pf-text-secondary);
  margin: 4px 0 0;
}

/* ── Manage Account (side nav) ───────────── */
.pf-manage-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
}

@media (min-width: 768px) {
  .pf-manage-layout {
    grid-template-columns: 240px 1fr;
  }
}

.pf-manage-nav {
  display: flex;
  flex-direction: column;
  gap: 4px;
  background: var(--pf-surface);
  border: 1px solid var(--pf-border);
  border-radius: var(--pf-radius-md);
  padding: 8px;
  overflow: hidden;
}

.pf-manage-nav a,
.pf-manage-nav button {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 14px;
  border-radius: var(--pf-radius-sm);
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--pf-text-secondary);
  text-decoration: none;
  transition: all var(--pf-transition);
  border: none;
  background: none;
  cursor: pointer;
  font-family: inherit;
  width: 100%;
  text-align: left;
}

.pf-manage-nav a:hover,
.pf-manage-nav button:hover {
  background: var(--pf-bg);
  color: var(--pf-text);
}

.pf-manage-nav a.active,
.pf-manage-nav button.active {
  background: var(--pf-primary-lighter);
  color: var(--pf-primary-dark);
  font-weight: 600;
}

.pf-manage-nav a.active::before {
  content: '';
  width: 3px;
  height: 100%;
  background: var(--pf-primary);
  border-radius: var(--pf-radius-full);
  position: absolute;
  left: 0;
  top: 0;
}

/* ── Landing page showcase ───────────────── */
.pf-showcase {
  display: grid;
  grid-template-columns: 1fr;
  gap: 32px;
  padding: 24px 0 48px;
}

@media (min-width: 768px) {
  .pf-showcase {
    grid-template-columns: 1fr 1fr;
    gap: 48px;
    padding: 32px 0 64px;
    align-items: center;
  }
}

.pf-showcase-image {
  width: 100%;
  border-radius: var(--pf-radius-lg);
  box-shadow: var(--pf-shadow-xl);
}

.pf-showcase-text h2 {
  font-size: 1.5rem;
  margin-bottom: 12px;
}

.pf-showcase-text p {
  font-size: 0.95rem;
  color: var(--pf-text-secondary);
  line-height: 1.7;
}

/* ── Footer ──────────────────────────────── */
.pf-footer {
  border-top: 1px solid var(--pf-border);
  padding: 20px 24px;
  text-align: center;
  font-size: 0.85rem;
  color: var(--pf-text-muted);
  margin-top: 40px;
}

@media (min-width: 768px) {
  .pf-footer { padding: 24px 32px; margin-top: 60px; }
}

.pf-footer a {
  color: var(--pf-text-secondary);
  text-decoration: underline;
  text-underline-offset: 2px;
}
.pf-footer a:hover { color: var(--pf-primary); }

/* ── Misc Utilities ──────────────────────── */
.pf-mt-0 { margin-top: 0; }
.pf-mt-2 { margin-top: 8px; }
.pf-mt-4 { margin-top: 16px; }
.pf-mt-6 { margin-top: 24px; }
.pf-mb-0 { margin-bottom: 0; }
.pf-mb-2 { margin-bottom: 8px; }
.pf-mb-4 { margin-bottom: 16px; }
.pf-mb-6 { margin-bottom: 24px; }
.pf-gap-2 { gap: 8px; }
.pf-gap-3 { gap: 12px; }
.pf-gap-4 { gap: 16px; }
.pf-flex { display: flex; }
.pf-flex-center { display: flex; align-items: center; justify-content: center; }
.pf-flex-between { display: flex; align-items: center; justify-content: space-between; }
.pf-flex-wrap { flex-wrap: wrap; }
.pf-text-center { text-align: center; }
.pf-text-right { text-align: right; }
.pf-text-muted { color: var(--pf-text-secondary); }
.pf-text-sm { font-size: 0.85rem; }
.pf-w-full { width: 100%; }
.pf-hidden { display: none; }

/* ── Responsive helpers ──────────────────── */
.pf-only-mobile { display: block; }
.pf-only-desktop { display: none; }

@media (min-width: 768px) {
  .pf-only-mobile { display: none; }
  .pf-only-desktop { display: block; }
}

/* ── Smooth scroll offset for anchor links ── */
.pf-anchor {
  scroll-margin-top: 80px;
}

/* ── Style overrides for Bootstrap classes ── */
/* Make standard Bootstrap alerts use our styles too */
.alert {
  border-radius: var(--pf-radius-sm) !important;
  border-width: 0 !important;
  border-left: 4px solid transparent !important;
}
.alert-success {
  background: var(--pf-success-light) !important;
  color: var(--pf-primary-dark) !important;
  border-left-color: var(--pf-success) !important;
}
.alert-danger {
  background: var(--pf-danger-light) !important;
  color: #B91C1C !important;
  border-left-color: var(--pf-danger) !important;
}
.alert-info {
  background: var(--pf-info-light) !important;
  color: var(--pf-secondary-dark) !important;
  border-left-color: var(--pf-secondary) !important;
}
.alert-warning {
  background: var(--pf-warning-light) !important;
  color: var(--pf-accent-dark) !important;
  border-left-color: var(--pf-warning) !important;
}