/* ==========================================================================
   iOS NATIVE-INSPIRED DESIGN SYSTEM & PWA STYLES
   ========================================================================== */

:root {
  --primary: #0a84ff;
  --primary-hover: #0070e0;
  --bg-app: #0f172a;
  --bg-card: #1e293b;
  --bg-surface: #1e293b;
  --bg-surface-elevated: #334155;
  --border-subtle: rgba(255, 255, 255, 0.08);
  --border-active: rgba(255, 255, 255, 0.2);
  --text-main: #f8fafc;
  --text-muted: #94a3b8;
  --text-dim: #64748b;
  --accent-gold: #f59e0b;
  --accent-red: #ef4444;
  --accent-green: #10b981;
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-xl: 26px;
  --shadow-card: 0 10px 25px -5px rgba(0, 0, 0, 0.4), 0 8px 10px -6px rgba(0, 0, 0, 0.3);
  --shadow-glow: 0 0 20px rgba(10, 132, 255, 0.3);
  --safe-top: env(safe-area-inset-top, 0px);
  --safe-bottom: env(safe-area-inset-bottom, 0px);
  --font-system: -apple-system, BlinkMacSystemFont, "SF Pro Display", "SF Pro Text", "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

/* Jasny motyw wspierany */
@media (prefers-color-scheme: light) {
  :root {
    --bg-app: #f1f5f9;
    --bg-card: #ffffff;
    --bg-surface: #ffffff;
    --bg-surface-elevated: #e2e8f0;
    --border-subtle: rgba(0, 0, 0, 0.06);
    --border-active: rgba(0, 0, 0, 0.15);
    --text-main: #0f172a;
    --text-muted: #64748b;
    --text-dim: #94a3b8;
  }
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  -webkit-tap-highlight-color: transparent;
  user-select: none;
}

html {
  overscroll-behavior: none;
  overscroll-behavior-y: none;
  height: 100%;
}

body {
  font-family: var(--font-system);
  background-color: var(--bg-app);
  color: var(--text-main);
  min-height: 100vh;
  min-height: 100dvh;
  overflow-x: hidden;
  overscroll-behavior: none;
  overscroll-behavior-y: none;
  padding-top: calc(var(--safe-top) + 12px);
  padding-bottom: calc(max(10px, env(safe-area-inset-bottom, 0px)) + 58px);
  -webkit-font-smoothing: antialiased;
}

/* Kontener główny */
.app-container {
  max-width: 540px;
  margin: 0 auto;
  padding: 0 16px;
}

/* Header */
.app-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 16px;
  padding: 4px 0;
}

.header-title-group h1 {
  font-size: 28px;
  font-weight: 800;
  letter-spacing: -0.5px;
  background: linear-gradient(135deg, var(--text-main) 60%, var(--primary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.header-subtitle {
  font-size: 13px;
  color: var(--text-muted);
  font-weight: 500;
}

.header-actions {
  display: flex;
  gap: 10px;
}

.btn-icon {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-subtle);
  color: var(--text-main);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
}

.btn-icon:active {
  transform: scale(0.92);
  background: var(--primary);
  color: #ffffff;
}

/* Pasek wyszukiwania i filtrów */
.search-wrapper {
  position: relative;
  margin-bottom: 16px;
}

.search-input {
  width: 100%;
  height: 46px;
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 0 40px 0 42px;
  color: var(--text-main);
  font-size: 15px;
  outline: none;
  transition: all 0.2s ease;
  user-select: text;
}

.search-input:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(10, 132, 255, 0.2);
}

.search-icon {
  position: absolute;
  left: 14px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-dim);
  pointer-events: none;
}

.search-clear {
  position: absolute;
  right: 12px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-dim);
  background: none;
  border: none;
  font-size: 16px;
  cursor: pointer;
  display: none;
}

/* Filtry kategorii / zakładek */
.filter-tabs {
  display: flex;
  gap: 8px;
  margin-bottom: 20px;
  overflow-x: auto;
  scrollbar-width: none;
  padding-bottom: 4px;
}

.filter-tabs::-webkit-scrollbar {
  display: none;
}

.tab-btn {
  padding: 8px 16px;
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: 30px;
  color: var(--text-muted);
  font-size: 13px;
  font-weight: 600;
  white-space: nowrap;
  cursor: pointer;
  transition: all 0.2s ease;
}

.tab-btn.active {
  background: var(--primary);
  color: #ffffff;
  border-color: var(--primary);
  box-shadow: 0 4px 12px rgba(10, 132, 255, 0.35);
}

/* Lista i kafelki kart */
.cards-grid {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.card-item {
  position: relative;
  height: 140px;
  border-radius: var(--radius-lg);
  padding: 16px 20px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  color: #ffffff;
  cursor: pointer;
  transition: transform 0.25s cubic-bezier(0.34, 1.56, 0.64, 1), box-shadow 0.25s ease;
  box-shadow: var(--shadow-card);
  overflow: hidden;
}

.card-item::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(135deg, rgba(255,255,255,0.15) 0%, rgba(0,0,0,0.2) 100%);
  pointer-events: none;
}

.card-item:active {
  transform: scale(0.97);
}

.card-top {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  z-index: 1;
}

.card-brand {
  display: flex;
  align-items: center;
  gap: 12px;
}

.card-logo-badge {
  width: 40px;
  height: 40px;
  background: rgba(255, 255, 255, 0.2);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
}

.card-title {
  font-size: 18px;
  font-weight: 700;
  letter-spacing: -0.3px;
  text-shadow: 0 1px 3px rgba(0,0,0,0.4);
}

.card-fav-btn {
  background: rgba(0, 0, 0, 0.25);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border: none;
  width: 34px;
  height: 34px;
  border-radius: 50%;
  color: #ffffff;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: transform 0.2s ease, color 0.2s ease;
  z-index: 2;
}

.card-fav-btn.is-fav {
  color: var(--accent-gold);
}

.card-bottom {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  z-index: 1;
}

.card-code-preview {
  font-family: "SF Mono", Monaco, Consolas, monospace;
  font-size: 14px;
  letter-spacing: 1.5px;
  font-weight: 600;
  text-shadow: 0 1px 2px rgba(0,0,0,0.5);
}

.card-type-badge {
  font-size: 10px;
  font-weight: 700;
  text-transform: uppercase;
  padding: 3px 8px;
  border-radius: 6px;
  background: rgba(0, 0, 0, 0.3);
  letter-spacing: 0.5px;
}

/* Empty State */
.empty-state {
  text-align: center;
  padding: 60px 20px;
  color: var(--text-muted);
}

.empty-state-icon {
  font-size: 48px;
  margin-bottom: 12px;
  opacity: 0.7;
}

.empty-state h3 {
  font-size: 18px;
  color: var(--text-main);
  margin-bottom: 6px;
}

.empty-state p {
  font-size: 14px;
  margin-bottom: 20px;
}

/* Modal pełnoekranowy (Podgląd Kodu Kreskowego) */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.75);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  display: flex;
  align-items: flex-end;
  justify-content: center;
  z-index: 1000;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
}

.modal-overlay.active {
  opacity: 1;
  pointer-events: auto;
}

.modal-sheet {
  width: 100%;
  max-width: 500px;
  background: var(--bg-surface);
  border-top-left-radius: var(--radius-xl);
  border-top-right-radius: var(--radius-xl);
  padding: 20px 20px calc(var(--safe-bottom) + 24px) 20px;
  max-height: 92vh;
  overflow-y: auto;
  transform: translateY(100%);
  transition: transform 0.35s cubic-bezier(0.32, 0.72, 0, 1);
  box-shadow: 0 -10px 40px rgba(0, 0, 0, 0.5);
}

.modal-overlay.active .modal-sheet {
  transform: translateY(0);
}

.sheet-handle {
  width: 40px;
  height: 5px;
  background: var(--border-active);
  border-radius: 3px;
  margin: 0 auto 16px auto;
}

/* Karta skanowania (Duży kod na białym tle) */
.barcode-box-white {
  background: #ffffff;
  border-radius: var(--radius-md);
  padding: 24px 16px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 20px rgba(0,0,0,0.15);
  margin-bottom: 20px;
}

.barcode-box-white svg,
.barcode-box-white canvas,
.barcode-box-white img {
  max-width: 100%;
  height: auto;
}

.barcode-number-display {
  font-family: "SF Mono", Monaco, Consolas, monospace;
  font-size: 19px;
  font-weight: 700;
  letter-spacing: 2px;
  color: #111827;
  margin-top: 12px;
  text-align: center;
  user-select: text;
}

/* Przyciski akcji modala */
.modal-actions-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
  margin-top: 16px;
}

.btn-action {
  padding: 12px 10px;
  border-radius: var(--radius-md);
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-subtle);
  color: var(--text-main);
  font-size: 13px;
  font-weight: 600;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  cursor: pointer;
  transition: all 0.2s ease;
}

.btn-action:active {
  transform: scale(0.95);
  background: var(--primary);
  color: #ffffff;
}

.btn-action.btn-danger:active {
  background: var(--accent-red);
}

/* Formularz dodawania / edycji */
.form-group {
  margin-bottom: 16px;
}

.form-label {
  display: block;
  font-size: 13px;
  font-weight: 600;
  color: var(--text-muted);
  margin-bottom: 6px;
}

.form-input, .form-select, .form-textarea {
  width: 100%;
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 12px 14px;
  color: var(--text-main);
  font-size: 15px;
  outline: none;
  font-family: inherit;
  user-select: text;
}

.form-input:focus, .form-select:focus, .form-textarea:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(10, 132, 255, 0.2);
}

.presets-picker {
  display: flex;
  gap: 10px;
  overflow-x: auto;
  padding: 6px 2px 12px 2px;
  scrollbar-width: none;
}

.presets-picker::-webkit-scrollbar {
  display: none;
}

.preset-chip {
  flex: 0 0 auto;
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 8px 12px;
  border-radius: 12px;
  background: var(--bg-surface-elevated);
  border: 2px solid transparent;
  cursor: pointer;
  font-size: 12px;
  font-weight: 600;
  color: var(--text-main);
  transition: all 0.2s ease;
}

.preset-chip.selected {
  border-color: var(--primary);
  background: rgba(10, 132, 255, 0.15);
}

.btn-primary {
  width: 100%;
  height: 50px;
  background: var(--primary);
  border: none;
  border-radius: var(--radius-md);
  color: #ffffff;
  font-size: 16px;
  font-weight: 700;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  box-shadow: 0 4px 15px rgba(10, 132, 255, 0.4);
  transition: all 0.2s ease;
  margin-top: 10px;
}

.btn-primary:active {
  transform: scale(0.98);
}

/* Skaner aparatu */
.scanner-viewport {
  width: 100%;
  height: 280px;
  background: #000000;
  border-radius: var(--radius-lg);
  overflow: hidden;
  position: relative;
  margin-bottom: 16px;
}

#reader {
  width: 100% !important;
  height: 100% !important;
}

#reader video {
  object-fit: cover !important;
  border-radius: var(--radius-lg);
}

/* Nawigacja dolna (iOS Tab Bar zoptymalizowana pod PWA) */
.tab-bar {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  width: 100%;
  height: auto;
  min-height: 48px;
  background: rgba(15, 23, 42, 0.92);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-top: 1px solid var(--border-subtle);
  display: flex;
  justify-content: space-around;
  align-items: center;
  padding-top: 4px;
  padding-bottom: max(6px, env(safe-area-inset-bottom, 0px));
  z-index: 100;
  transform: translateZ(0);
  -webkit-transform: translateZ(0);
}

@media (prefers-color-scheme: light) {
  .tab-bar {
    background: rgba(255, 255, 255, 0.88);
  }
}

.tab-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 3px;
  color: var(--text-dim);
  text-decoration: none;
  font-size: 11px;
  font-weight: 600;
  cursor: pointer;
  transition: color 0.2s ease;
  background: none;
  border: none;
  min-width: 64px;
}

.tab-item.active {
  color: var(--primary);
}

.tab-item svg {
  width: 22px;
  height: 22px;
}

/* Pływający przycisk dodawania karty na środku */
.tab-add-btn {
  width: 46px;
  height: 46px;
  border-radius: 50%;
  background: linear-gradient(135deg, #0a84ff 0%, #0050aa 100%);
  color: #ffffff;
  border: none;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 15px rgba(10, 132, 255, 0.5);
  margin-top: -14px;
  cursor: pointer;
  transition: transform 0.2s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.tab-add-btn:active {
  transform: scale(0.9);
}

/* Toast notyfikacje */
.toast {
  position: fixed;
  top: calc(var(--safe-top) + 16px);
  left: 50%;
  transform: translateX(-50%) translateY(-180px);
  opacity: 0;
  visibility: hidden;
  background: rgba(30, 41, 59, 0.96);
  color: #ffffff;
  padding: 10px 18px;
  border-radius: 30px;
  font-size: 13px;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 8px;
  box-shadow: 0 10px 25px rgba(0,0,0,0.3);
  border: 1px solid var(--border-active);
  z-index: 2000;
  transition: transform 0.3s cubic-bezier(0.34, 1.56, 0.64, 1), opacity 0.25s ease, visibility 0.25s ease;
  pointer-events: none;
}

.toast.show {
  transform: translateX(-50%) translateY(0);
  opacity: 1;
  visibility: visible;
}

/* Podgląd zdjęć karty (przód/tył) */
.card-photos-container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  margin-top: 16px;
}

.photo-preview-box {
  position: relative;
  height: 110px;
  border-radius: var(--radius-md);
  border: 1px dashed var(--border-active);
  background: var(--bg-surface-elevated);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  cursor: pointer;
}

.photo-preview-box img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}