/* ============================================
   ZRZUTKI - UI Components (Base)
   Replaces: theme01/css/components.css
   All font-size >= 16px, !important on typography
   ============================================ */

/* === APP SHELL === */
.app-shell {
  position: fixed;
  inset: 0;
  display: flex;
  flex-direction: column;
  background: var(--color-bg);
  padding-top: var(--safe-area-top);
  padding-bottom: var(--safe-area-bottom);
}

/* === HEADER / NAVIGATION BAR === */
.nav-bar {
  position: sticky;
  top: 0;
  z-index: var(--z-sticky);
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 56px;
  padding: var(--space-3) var(--space-4);
  background: rgba(250, 250, 250, 0.85);
  backdrop-filter: var(--blur-md);
  -webkit-backdrop-filter: var(--blur-md);
  border-bottom: 1px solid var(--color-divider);
}

.nav-bar--transparent {
  background: transparent;
  backdrop-filter: none;
  border-bottom: none;
}

.nav-bar__title {
  font-size: var(--text-md) !important;
  font-weight: 600;
  letter-spacing: var(--tracking-tight);
  line-height: var(--leading-snug) !important;
}

.nav-bar__subtitle {
  font-size: var(--text-sm) !important;
  color: var(--color-text-secondary);
  line-height: var(--leading-normal) !important;
}

.nav-bar__actions {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

/* === ICON BUTTON === */
.icon-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-full);
  transition: background var(--duration-fast) var(--ease-out);
}

.icon-btn:hover {
  background: var(--color-surface-subtle);
}

.icon-btn:active {
  background: var(--color-border);
}

.icon-btn svg {
  width: 22px;
  height: 22px;
  color: var(--color-text-primary);
}

.icon-btn--small {
  width: 32px;
  height: 32px;
}

.icon-btn--small svg {
  width: 18px;
  height: 18px;
}

/* === BUTTON === */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  height: 48px;
  padding: 0 var(--space-5);
  font-size: var(--text-base) !important;
  font-weight: 600;
  font-family: var(--font-sans) !important;
  letter-spacing: var(--tracking-tight);
  line-height: var(--leading-snug) !important;
  border-radius: var(--radius-lg);
  transition: all var(--duration-fast) var(--ease-out);
  white-space: nowrap;
}

.btn:disabled {
  opacity: 0.4;
  pointer-events: none;
}

/* Primary button */
.btn--primary {
  background: var(--color-accent);
  color: var(--color-text-inverse);
}

.btn--primary:hover {
  background: var(--color-accent-hover);
}

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

/* Secondary button */
.btn--secondary {
  background: var(--color-surface);
  color: var(--color-text-primary);
  border: 1px solid var(--color-border-strong);
}

.btn--secondary:hover {
  background: var(--color-surface-subtle);
}

/* Ghost button */
.btn--ghost {
  background: transparent;
  color: var(--color-accent);
}

.btn--ghost:hover {
  background: var(--color-accent-subtle);
}

/* Destructive button */
.btn--danger {
  background: var(--color-error);
  color: var(--color-text-inverse);
}

/* Button sizes */
.btn--small {
  height: 36px;
  padding: 0 var(--space-4);
  font-size: var(--text-sm) !important;
  border-radius: var(--radius-md);
}

.btn--large {
  height: 56px;
  padding: 0 var(--space-8);
  font-size: var(--text-md) !important;
  border-radius: var(--radius-xl);
}

/* Full width button */
.btn--block {
  width: 100%;
}

/* Button with icon */
.btn svg {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
}

/* === CARD === */
.card {
  background: var(--color-surface);
  border-radius: var(--radius-xl);
  overflow: hidden;
}

.card--elevated {
  box-shadow: var(--shadow-sm);
}

.card--bordered {
  border: 1px solid var(--color-border);
}

.card--interactive {
  transition: transform var(--duration-fast) var(--ease-out),
              box-shadow var(--duration-fast) var(--ease-out);
}

.card--interactive:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.card--interactive:active {
  transform: translateY(0);
  box-shadow: var(--shadow-sm);
}

.card__media {
  position: relative;
  aspect-ratio: 16 / 10;
  overflow: hidden;
  background: var(--color-surface-subtle);
}

.card__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--duration-slow) var(--ease-out);
}

.card--interactive:hover .card__media img {
  transform: scale(1.03);
}

.card__body {
  padding: var(--space-4);
}

.card__footer {
  padding: var(--space-4);
  border-top: 1px solid var(--color-divider);
}

/* === INPUT === */
.input-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.input-label {
  font-size: var(--text-sm) !important;
  font-weight: 500;
  color: var(--color-text-secondary);
  line-height: var(--leading-normal) !important;
}

.input-label--required::after {
  content: " *";
  color: var(--color-error);
}

.input {
  width: 100%;
  height: 48px;
  padding: 0 var(--space-4);
  font-size: var(--text-base) !important;
  font-family: var(--font-sans) !important;
  background: var(--color-surface);
  border: 1px solid var(--color-border-strong);
  border-radius: var(--radius-lg);
  transition: border-color var(--duration-fast) var(--ease-out),
              box-shadow var(--duration-fast) var(--ease-out);
}

.input::placeholder {
  color: var(--color-text-tertiary);
}

.input:focus {
  outline: none;
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px var(--color-accent-light);
}

.input--error {
  border-color: var(--color-error);
}

.input--error:focus {
  box-shadow: 0 0 0 3px var(--color-error-bg);
}

/* Textarea */
.textarea {
  min-height: 120px;
  padding: var(--space-4);
  resize: vertical;
  line-height: var(--leading-relaxed) !important;
}

/* Input hint/error message */
.input-hint {
  font-size: var(--text-sm) !important;
  color: var(--color-text-tertiary);
  line-height: var(--leading-normal) !important;
}

.input-error {
  font-size: var(--text-sm) !important;
  color: var(--color-error);
  line-height: var(--leading-normal) !important;
}

/* === FILE INPUT === */
.file-input {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-3);
  min-height: 140px;
  padding: var(--space-6);
  background: var(--color-surface);
  border: 2px dashed var(--color-border-strong);
  border-radius: var(--radius-xl);
  cursor: pointer;
  transition: border-color var(--duration-fast) var(--ease-out),
              background var(--duration-fast) var(--ease-out);
}

.file-input:hover {
  border-color: var(--color-accent);
  background: var(--color-accent-subtle);
}

.file-input__icon {
  width: 40px;
  height: 40px;
  color: var(--color-text-tertiary);
}

.file-input__text {
  font-size: var(--text-sm) !important;
  color: var(--color-text-secondary);
  text-align: center;
  line-height: var(--leading-normal) !important;
}

.file-input__text strong {
  color: var(--color-accent);
}

/* === CHECKBOX / RADIO === */
.choice {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  padding: var(--space-4);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  cursor: pointer;
  transition: border-color var(--duration-fast) var(--ease-out),
              background var(--duration-fast) var(--ease-out);
}

.choice:hover {
  border-color: var(--color-accent);
}

.choice--selected {
  border-color: var(--color-accent);
  background: var(--color-accent-subtle);
}

.choice__indicator {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 22px;
  height: 22px;
  flex-shrink: 0;
  margin-top: 1px;
  border: 2px solid var(--color-border-strong);
  border-radius: var(--radius-full);
  transition: all var(--duration-fast) var(--ease-out);
}

.choice--checkbox .choice__indicator {
  border-radius: var(--radius-xs);
}

.choice--selected .choice__indicator {
  background: var(--color-accent);
  border-color: var(--color-accent);
}

.choice__indicator svg {
  width: 14px;
  height: 14px;
  color: var(--color-text-inverse);
  opacity: 0;
  transform: scale(0.5);
  transition: all var(--duration-fast) var(--ease-spring);
}

.choice--selected .choice__indicator svg {
  opacity: 1;
  transform: scale(1);
}

.choice__content {
  flex: 1;
  min-width: 0;
}

.choice__title {
  font-size: var(--text-base) !important;
  font-weight: 500;
  color: var(--color-text-primary);
  line-height: var(--leading-snug) !important;
}

.choice__description {
  margin-top: var(--space-1);
  font-size: var(--text-sm) !important;
  color: var(--color-text-secondary);
  line-height: var(--leading-relaxed) !important;
}

/* === BADGE === */
.badge {
  display: inline-flex;
  align-items: center;
  height: 28px;
  padding: 0 var(--space-3);
  font-size: var(--text-xs) !important;
  font-weight: 600;
  letter-spacing: var(--tracking-wide);
  text-transform: uppercase;
  line-height: var(--leading-snug) !important;
  border-radius: var(--radius-sm);
  background: var(--color-surface-subtle);
  color: var(--color-text-secondary);
}

.badge--primary {
  background: var(--color-accent-light);
  color: var(--color-accent);
}

.badge--success {
  background: var(--color-success-bg);
  color: var(--color-success);
}

.badge--warning {
  background: var(--color-warning-bg);
  color: var(--color-warning);
}

.badge--error {
  background: var(--color-error-bg);
  color: var(--color-error);
}

/* === AVATAR === */
.avatar {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-full);
  background: var(--color-accent-light);
  color: var(--color-accent);
  font-size: var(--text-sm) !important;
  font-weight: 600;
  overflow: hidden;
}

.avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.avatar--small {
  width: 32px;
  height: 32px;
  font-size: var(--text-xs) !important;
}

.avatar--large {
  width: 56px;
  height: 56px;
  font-size: var(--text-lg) !important;
}

/* === DIVIDER === */
.divider {
  height: 1px;
  background: var(--color-divider);
}

.divider--thick {
  height: 8px;
  background: var(--color-surface-subtle);
}

/* === EMPTY STATE === */
.empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: var(--space-12) var(--space-6);
  text-align: center;
}

.empty-state__icon {
  width: 64px;
  height: 64px;
  margin-bottom: var(--space-4);
  color: var(--color-text-tertiary);
}

.empty-state__title {
  font-size: var(--text-lg) !important;
  font-weight: 600;
  color: var(--color-text-primary);
  margin-bottom: var(--space-2);
  line-height: var(--leading-snug) !important;
}

.empty-state__description {
  font-size: var(--text-base) !important;
  color: var(--color-text-secondary);
  max-width: 280px;
  margin-bottom: var(--space-6);
  line-height: var(--leading-normal) !important;
}

/* === SKELETON LOADER === */
.skeleton {
  background: linear-gradient(
    90deg,
    var(--color-surface-subtle) 25%,
    var(--color-surface) 50%,
    var(--color-surface-subtle) 75%
  );
  background-size: 200% 100%;
  animation: shimmer 1.5s infinite linear;
  border-radius: var(--radius-sm);
}

.skeleton--text {
  height: 16px;
  width: 100%;
}

.skeleton--title {
  height: 24px;
  width: 60%;
}

.skeleton--avatar {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-full);
}

.skeleton--image {
  aspect-ratio: 16 / 10;
  width: 100%;
  border-radius: var(--radius-lg);
}

/* === SPINNER === */
.spinner {
  width: 24px;
  height: 24px;
  border: 2px solid var(--color-border);
  border-top-color: var(--color-accent);
  border-radius: var(--radius-full);
  animation: spin 0.8s linear infinite;
}

.spinner--small {
  width: 16px;
  height: 16px;
  border-width: 2px;
}

.spinner--large {
  width: 40px;
  height: 40px;
  border-width: 3px;
}

/* === PROGRESS BAR === */
.progress {
  height: 4px;
  background: var(--color-surface-subtle);
  border-radius: var(--radius-full);
  overflow: hidden;
}

.progress__fill {
  height: 100%;
  background: var(--color-accent);
  border-radius: var(--radius-full);
  transition: width var(--duration-normal) var(--ease-out);
}

/* === TABS === */
.tabs {
  display: flex;
  gap: var(--space-1);
  padding: var(--space-1);
  background: var(--color-surface-subtle);
  border-radius: var(--radius-lg);
}

.tab {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  height: 40px;
  font-size: var(--text-sm) !important;
  font-weight: 500;
  color: var(--color-text-secondary);
  line-height: var(--leading-snug) !important;
  border-radius: var(--radius-md);
  transition: all var(--duration-fast) var(--ease-out);
}

.tab:hover {
  color: var(--color-text-primary);
}

.tab--active {
  background: var(--color-surface);
  color: var(--color-text-primary);
  box-shadow: var(--shadow-xs);
}

/* === TOAST === */
.toast {
  position: fixed;
  bottom: calc(var(--space-4) + var(--safe-area-bottom));
  left: var(--space-4);
  right: var(--space-4);
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-4);
  background: var(--color-text-primary);
  color: var(--color-text-inverse);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  z-index: var(--z-toast);
  animation: fadeInUp var(--duration-normal) var(--ease-out);
}

.toast__icon {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
}

.toast__message {
  flex: 1;
  font-size: var(--text-sm) !important;
  font-weight: 500;
  line-height: var(--leading-normal) !important;
}

.toast--success {
  background: var(--color-success);
}

.toast--error {
  background: var(--color-error);
}

/* === LIST === */
.list {
  display: flex;
  flex-direction: column;
}

.list-item {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-4);
  background: var(--color-surface);
  transition: background var(--duration-fast) var(--ease-out);
}

.list-item:not(:last-child) {
  border-bottom: 1px solid var(--color-divider);
}

.list-item--interactive:hover {
  background: var(--color-surface-subtle);
}

.list-item--interactive:active {
  background: var(--color-border);
}

.list-item__icon {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  border-radius: var(--radius-md);
  background: var(--color-surface-subtle);
  color: var(--color-text-secondary);
}

.list-item__content {
  flex: 1;
  min-width: 0;
}

.list-item__title {
  font-size: var(--text-base) !important;
  font-weight: 500;
  color: var(--color-text-primary);
  line-height: var(--leading-snug) !important;
}

.list-item__subtitle {
  font-size: var(--text-sm) !important;
  color: var(--color-text-secondary);
  line-height: var(--leading-normal) !important;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.list-item__trailing {
  flex-shrink: 0;
  color: var(--color-text-tertiary);
}

/* === CHIP === */
.chip {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  height: 36px;
  padding: 0 var(--space-4);
  font-size: var(--text-sm) !important;
  font-weight: 500;
  line-height: var(--leading-snug) !important;
  background: var(--color-surface-subtle);
  border-radius: var(--radius-full);
  transition: background var(--duration-fast) var(--ease-out);
}

.chip--interactive:hover {
  background: var(--color-border);
}

.chip--selected {
  background: var(--color-accent);
  color: var(--color-text-inverse);
}

.chip svg {
  width: 16px;
  height: 16px;
}

/* === AMOUNT / PRICE DISPLAY === */
.amount {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}

.amount__value {
  font-size: var(--text-2xl) !important;
  font-weight: 700;
  letter-spacing: var(--tracking-tight);
  color: var(--color-text-primary);
  line-height: var(--leading-tight) !important;
}

.amount__label {
  font-size: var(--text-sm) !important;
  color: var(--color-text-secondary);
  text-transform: uppercase;
  letter-spacing: var(--tracking-wider);
  line-height: var(--leading-normal) !important;
}

/* === MEDIA QUERIES === */
@media (min-width: 640px) {
  .btn {
    height: 44px;
  }

  .btn--large {
    height: 52px;
  }

  .input {
    height: 44px;
  }
}