/* ============================================================================
   styles.css — odpowiednik klas Tailwind z oryginału (paleta gray/blue/
   purple/green/red, tryb ciemny przez klasę .dark na <html>).
   ========================================================================= */

:root {
  --gray-50: #f9fafb;
  --gray-100: #f3f4f6;
  --gray-200: #e5e7eb;
  --gray-300: #d1d5db;
  --gray-400: #9ca3af;
  --gray-500: #6b7280;
  --gray-600: #4b5563;
  --gray-700: #374151;
  --gray-800: #1f2937;
  --gray-900: #111827;

  --blue-100: #dbeafe;
  --blue-200: #bfdbfe;
  --blue-300: #93c5fd;
  --blue-400: #60a5fa;
  --blue-500: #3b82f6;
  --blue-600: #2563eb;
  --blue-700: #1d4ed8;
  --blue-800: #1e40af;
  --blue-900: #1e3a8a;

  --purple-600: #9333ea;
  --purple-700: #7e22ce;

  --green-50: #f0fdf4;
  --green-200: #bbf7d0;
  --green-400: #4ade80;
  --green-600: #16a34a;
  --green-700: #15803d;
  --green-800: #166534;

  --red-50: #fef2f2;
  --red-200: #fecaca;
  --red-400: #f87171;
  --red-500: #ef4444;
  --red-600: #dc2626;
  --red-800: #991b1b;
}

/* --------------------------------------------------------------- reset --- */
*,
*::before,
*::after {
  box-sizing: border-box;
  border: 0 solid var(--gray-200);
}

html {
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  font-family: ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont,
    'Segoe UI', Roboto, 'Helvetica Neue', Arial, 'Noto Sans', sans-serif,
    'Apple Color Emoji', 'Segoe UI Emoji';
  font-size: 16px;
  line-height: 1.5;
}

h1,
h2,
h3,
h4,
p {
  margin: 0;
  font-size: inherit;
  font-weight: inherit;
}

button,
input,
select {
  font-family: inherit;
  font-size: 100%;
  line-height: inherit;
  color: inherit;
  margin: 0;
}

button {
  padding: 0;
  background-color: transparent;
  background-image: none;
  cursor: pointer;
}

img,
svg {
  display: block;
  vertical-align: middle;
}

svg {
  flex-shrink: 0;
}

[hidden] {
  display: none !important;
}

.hidden-input {
  display: none;
}

/* ------------------------------------------------------------- layout --- */
.app {
  min-height: 100vh;
  background-color: var(--gray-50);
  transition: background-color 200ms cubic-bezier(0.4, 0, 0.2, 1),
    color 200ms cubic-bezier(0.4, 0, 0.2, 1);
}

.dark .app {
  background-color: var(--gray-900);
}

.container {
  max-width: 80rem;
  margin-left: auto;
  margin-right: auto;
  padding-left: 1rem;
  padding-right: 1rem;
}

@media (min-width: 640px) {
  .container {
    padding-left: 1.5rem;
    padding-right: 1.5rem;
  }
}

@media (min-width: 1024px) {
  .container {
    padding-left: 2rem;
    padding-right: 2rem;
  }
}

.main {
  padding-top: 2rem;
  padding-bottom: 2rem;
}

/* ------------------------------------------------------------- header --- */
.header {
  background-color: #fff;
  box-shadow: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  border-bottom: 1px solid var(--gray-200);
}

.dark .header {
  background-color: var(--gray-900);
  border-bottom-color: var(--gray-700);
}

.header-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 4rem;
}

.header-brand {
  display: flex;
  align-items: center;
}

.header-brand > * + * {
  margin-left: 0.75rem;
}

.header-logo {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 2.5rem;
  height: 2.5rem;
  background-image: linear-gradient(to right, var(--blue-600), var(--purple-600));
  border-radius: 0.5rem;
}

.icon-book {
  width: 1.5rem;
  height: 1.5rem;
  color: #fff;
}

.header-title {
  font-size: 1.5rem;
  line-height: 2rem;
  font-weight: 700;
  color: var(--gray-900);
}

.dark .header-title {
  color: #fff;
}

.header-subtitle {
  font-size: 0.875rem;
  line-height: 1.25rem;
  color: var(--gray-500);
}

.dark .header-subtitle {
  color: var(--gray-400);
}

.theme-button {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 2.5rem;
  height: 2.5rem;
  border-radius: 0.5rem;
  background-color: var(--gray-100);
  color: var(--gray-600);
  transition: all 200ms cubic-bezier(0.4, 0, 0.2, 1);
}

.theme-button:hover {
  background-color: var(--gray-200);
}

.dark .theme-button {
  background-color: var(--gray-800);
  color: var(--gray-300);
}

.dark .theme-button:hover {
  background-color: var(--gray-700);
}

.theme-button svg {
  width: 1.25rem;
  height: 1.25rem;
}

/* --------------------------------------------------------------- hero --- */
.hero {
  text-align: center;
  margin-bottom: 2rem;
}

.hero-title {
  font-size: 1.875rem;
  line-height: 2.25rem;
  font-weight: 700;
  color: var(--gray-900);
  margin-bottom: 1rem;
}

.dark .hero-title {
  color: #fff;
}

.hero-text {
  font-size: 1.125rem;
  line-height: 1.75rem;
  color: var(--gray-600);
  margin-bottom: 2rem;
}

.dark .hero-text {
  color: var(--gray-400);
}

/* ------------------------------------------------------------ przyciski - */
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 0.5rem;
  padding: 0.5rem 1rem;
  transition: background-color 150ms cubic-bezier(0.4, 0, 0.2, 1),
    color 150ms cubic-bezier(0.4, 0, 0.2, 1),
    opacity 150ms cubic-bezier(0.4, 0, 0.2, 1);
}

.button > * + * {
  margin-left: 0.5rem;
}

.button:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.button-flex {
  /* przyciski z klasą `flex` (a nie `inline-flex`) — element blokowy */
  display: flex;
}

.button-lg {
  padding: 0.75rem 1.5rem;
  box-shadow: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
}

.button-primary {
  background-color: var(--blue-600);
  color: #fff;
}

.button-primary:hover:not(:disabled) {
  background-color: var(--blue-700);
}

.button-green {
  background-color: var(--green-600);
  color: #fff;
}

.button-green:hover:not(:disabled) {
  background-color: var(--green-700);
}

.button-purple {
  background-color: var(--purple-600);
  color: #fff;
}

.button-purple:hover:not(:disabled) {
  background-color: var(--purple-700);
}

.button-secondary {
  border: 1px solid var(--gray-300);
  color: var(--gray-700);
}

.button-secondary:hover {
  background-color: var(--gray-50);
}

.dark .button-secondary {
  border-color: var(--gray-600);
  color: var(--gray-300);
}

.dark .button-secondary:hover {
  background-color: var(--gray-700);
}

.icon-plus-5 {
  width: 1.25rem;
  height: 1.25rem;
}

.icon-plus-4,
.icon-x-4,
.icon-file,
.icon-code,
.icon-upload,
.icon-sliders {
  width: 1rem;
  height: 1rem;
}

.icon-x-5 {
  width: 1.25rem;
  height: 1.25rem;
}

.icon-plus-12 {
  width: 3rem;
  height: 3rem;
  color: var(--gray-400);
}

/* ------------------------------------------------------- panele/filtry -- */
.controls-grid {
  display: grid;
  grid-template-columns: repeat(1, minmax(0, 1fr));
  gap: 2rem;
  margin-bottom: 2rem;
}

@media (min-width: 1024px) {
  .controls-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
  .controls-main {
    grid-column: span 2 / span 2;
  }
}

.panel {
  background-color: #fff;
  border-radius: 0.5rem;
  box-shadow: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  border: 1px solid var(--gray-200);
}

.dark .panel {
  background-color: var(--gray-800);
  border-color: var(--gray-700);
}

.filters {
  padding: 1rem;
}

.filters > * + * {
  margin-top: 1rem;
}

.search-wrapper {
  position: relative;
}

.icon-search {
  position: absolute;
  left: 0.75rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--gray-400);
  width: 1.25rem;
  height: 1.25rem;
}

.search-input {
  width: 100%;
  padding: 0.5rem 1rem 0.5rem 2.5rem;
  border: 1px solid var(--gray-300);
  border-radius: 0.5rem;
  outline: none;
  background-color: #fff;
  color: inherit;
}

.search-input:focus {
  border-color: var(--blue-500);
  box-shadow: 0 0 0 2px var(--blue-500);
}

.dark .search-input {
  border-color: var(--gray-600);
  background-color: var(--gray-700);
  color: #fff;
}

.search-clear {
  position: absolute;
  right: 0.75rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--gray-400);
}

.search-clear:hover {
  color: var(--gray-600);
}

.dark .search-clear:hover {
  color: var(--gray-200);
}

.filters-row {
  display: flex;
  flex-direction: column;
}

.filters-row > * + * {
  margin-top: 1rem;
}

@media (min-width: 640px) {
  .filters-row {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
  }
  .filters-row > * + * {
    margin-top: 0;
    margin-left: 1rem;
  }
}

.sort-wrapper {
  display: flex;
  align-items: center;
}

.sort-wrapper > * + * {
  margin-left: 0.5rem;
}

.icon-sliders {
  color: var(--gray-400);
}

.sort-select {
  border: 1px solid var(--gray-300);
  border-radius: 0.5rem;
  padding: 0.25rem 0.75rem;
  font-size: 0.875rem;
  line-height: 1.25rem;
  background-color: #fff;
  color: var(--gray-900);
  outline: none;
}

.sort-select:focus {
  box-shadow: 0 0 0 2px var(--blue-500);
}

.dark .sort-select {
  border-color: var(--gray-600);
  background-color: var(--gray-700);
  color: #fff;
}

.results-count {
  font-size: 0.875rem;
  line-height: 1.25rem;
  color: var(--gray-500);
}

.dark .results-count {
  color: var(--gray-400);
}

.tag-filters-title {
  font-size: 0.875rem;
  line-height: 1.25rem;
  font-weight: 500;
  color: var(--gray-700);
  margin-bottom: 0.5rem;
}

.dark .tag-filters-title {
  color: var(--gray-300);
}

.tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.tag-button {
  padding: 0.25rem 0.75rem;
  border-radius: 9999px;
  font-size: 0.875rem;
  line-height: 1.25rem;
  background-color: var(--gray-100);
  color: var(--gray-700);
  transition: background-color 150ms cubic-bezier(0.4, 0, 0.2, 1),
    color 150ms cubic-bezier(0.4, 0, 0.2, 1);
}

.tag-button:hover {
  background-color: var(--gray-200);
}

.dark .tag-button {
  background-color: var(--gray-700);
  color: var(--gray-300);
}

.dark .tag-button:hover {
  background-color: var(--gray-600);
}

.tag-button.is-selected,
.dark .tag-button.is-selected {
  background-color: var(--blue-600);
  color: #fff;
}

.clear-filters {
  margin-top: 0.5rem;
  font-size: 0.875rem;
  line-height: 1.25rem;
  color: var(--blue-600);
}

.clear-filters:hover {
  color: var(--blue-800);
}

.dark .clear-filters {
  color: var(--blue-400);
}

.dark .clear-filters:hover {
  color: var(--blue-200);
}

/* --------------------------------------------------------- eksport/import */
.export-import {
  padding: 1.5rem;
}

.panel-title {
  font-size: 1.125rem;
  line-height: 1.75rem;
  font-weight: 600;
  color: var(--gray-900);
  margin-bottom: 1rem;
}

.dark .panel-title {
  color: #fff;
}

.panel-subtitle {
  font-size: 0.875rem;
  line-height: 1.25rem;
  font-weight: 500;
  color: var(--gray-700);
  margin-bottom: 0.75rem;
}

.dark .panel-subtitle {
  color: var(--gray-300);
}

.export-section {
  margin-bottom: 1.5rem;
}

.export-buttons {
  display: flex;
  flex-direction: column;
}

.export-buttons > * + * {
  margin-top: 0.5rem;
}

@media (min-width: 640px) {
  .export-buttons {
    flex-direction: row;
  }
  .export-buttons > * + * {
    margin-top: 0;
    margin-left: 0.75rem;
  }
}

.export-empty {
  font-size: 0.875rem;
  line-height: 1.25rem;
  color: var(--gray-500);
  margin-top: 0.5rem;
}

.dark .export-empty {
  color: var(--gray-400);
}

.import-section > * + * {
  margin-top: 0.75rem;
}

.alert {
  padding: 0.75rem;
  border-radius: 0.5rem;
  border: 1px solid transparent;
  font-size: 0.875rem;
  line-height: 1.25rem;
}

.alert-error {
  background-color: var(--red-50);
  border-color: var(--red-200);
  color: var(--red-600);
}

.dark .alert-error {
  background-color: rgba(127, 29, 29, 0.2);
  border-color: #991b1b;
  color: var(--red-400);
}

.alert-success {
  background-color: var(--green-50);
  border-color: var(--green-200);
  color: var(--green-600);
}

.dark .alert-success {
  background-color: rgba(20, 83, 45, 0.2);
  border-color: var(--green-800);
  color: var(--green-400);
}

.import-hints {
  font-size: 0.75rem;
  line-height: 1rem;
  color: var(--gray-500);
}

.import-hints > * + * {
  margin-top: 0.25rem;
}

.dark .import-hints {
  color: var(--gray-400);
}

/* -------------------------------------------------------- lista kontaktów */
.contacts-empty {
  text-align: center;
  padding-top: 3rem;
  padding-bottom: 3rem;
}

.empty-icon {
  width: 6rem;
  height: 6rem;
  margin: 0 auto 1rem;
  border-radius: 9999px;
  background-color: var(--gray-100);
  display: flex;
  align-items: center;
  justify-content: center;
}

.dark .empty-icon {
  background-color: var(--gray-800);
}

.empty-title {
  font-size: 1.25rem;
  line-height: 1.75rem;
  font-weight: 500;
  color: var(--gray-900);
  margin-bottom: 0.5rem;
}

.dark .empty-title {
  color: #fff;
}

.empty-text {
  color: var(--gray-500);
  margin-bottom: 1rem;
}

.dark .empty-text {
  color: var(--gray-400);
}

.contacts-grid {
  display: grid;
  grid-template-columns: repeat(1, minmax(0, 1fr));
  gap: 1.5rem;
}

@media (min-width: 768px) {
  .contacts-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 1280px) {
  .contacts-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

/* ---------------------------------------------------------- ContactCard -- */
.contact-card {
  background-color: #fff;
  border-radius: 0.75rem;
  box-shadow: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  border: 1px solid var(--gray-200);
  transition: all 200ms cubic-bezier(0.4, 0, 0.2, 1);
}

.contact-card:hover {
  box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -2px rgba(0, 0, 0, 0.1);
}

.dark .contact-card {
  background-color: var(--gray-800);
  border-color: var(--gray-700);
}

.contact-card-body {
  padding: 1.5rem;
  display: flex;
  align-items: flex-start;
}

.contact-card-body > * + * {
  margin-left: 1rem;
}

.contact-avatar {
  width: 4rem;
  height: 4rem;
  border-radius: 9999px;
  object-fit: cover;
  box-shadow: 0 0 0 4px var(--gray-100);
  flex-shrink: 0;
}

.dark .contact-avatar {
  box-shadow: 0 0 0 4px var(--gray-700);
}

.contact-main {
  flex: 1 1 0%;
  min-width: 0;
}

.contact-top {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
}

.contact-name {
  font-size: 1.125rem;
  line-height: 1.75rem;
  font-weight: 600;
  color: var(--gray-900);
}

.dark .contact-name {
  color: #fff;
}

.contact-date {
  font-size: 0.875rem;
  line-height: 1.25rem;
  color: var(--gray-500);
  margin-top: 0.25rem;
}

.dark .contact-date {
  color: var(--gray-400);
}

.contact-actions {
  display: flex;
  opacity: 0;
  transition: opacity 200ms cubic-bezier(0.4, 0, 0.2, 1);
}

.contact-actions > * + * {
  margin-left: 0.25rem;
}

.contact-card:hover .contact-actions {
  opacity: 1;
}

.icon-button {
  padding: 0.5rem;
  color: var(--gray-400);
  border-radius: 0.5rem;
  transition: all 200ms cubic-bezier(0.4, 0, 0.2, 1);
}

.icon-button svg {
  width: 1rem;
  height: 1rem;
}

.icon-button.edit:hover {
  color: var(--blue-600);
  background-color: #eff6ff;
}

.dark .icon-button.edit:hover {
  color: var(--blue-400);
  background-color: rgba(30, 58, 138, 0.2);
}

.icon-button.delete:hover {
  color: var(--red-600);
  background-color: var(--red-50);
}

.dark .icon-button.delete:hover {
  color: var(--red-400);
  background-color: rgba(127, 29, 29, 0.2);
}

.contact-details {
  margin-top: 1rem;
}

.contact-details > * + * {
  margin-top: 0.5rem;
}

.contact-detail {
  display: flex;
  align-items: center;
  font-size: 0.875rem;
  line-height: 1.25rem;
  color: var(--gray-600);
}

.contact-detail > * + * {
  margin-left: 0.5rem;
}

.dark .contact-detail {
  color: var(--gray-300);
}

.contact-detail svg {
  width: 1rem;
  height: 1rem;
  color: var(--gray-400);
}

.contact-detail .truncate {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.contact-tags {
  margin-top: 1rem;
  display: flex;
  align-items: center;
}

.contact-tags > * + * {
  margin-left: 0.5rem;
}

.contact-tags > svg {
  width: 1rem;
  height: 1rem;
  color: var(--gray-400);
}

.tag-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 0.25rem;
}

.tag-chip {
  display: inline-flex;
  align-items: center;
  padding: 0.25rem 0.5rem;
  border-radius: 9999px;
  font-size: 0.75rem;
  line-height: 1rem;
  background-color: var(--blue-100);
  color: var(--blue-800);
}

.dark .tag-chip {
  background-color: rgba(30, 58, 138, 0.3);
  color: var(--blue-200);
}

/* ---------------------------------------------------------- ContactForm -- */
.modal-overlay {
  position: fixed;
  inset: 0;
  background-color: rgba(0, 0, 0, 0.5);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1rem;
  z-index: 50;
}

.modal {
  background-color: #fff;
  border-radius: 0.75rem;
  box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.1);
  max-width: 28rem;
  width: 100%;
  max-height: 90vh;
  overflow-y: auto;
}

.dark .modal {
  background-color: var(--gray-800);
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.5rem;
  border-bottom: 1px solid var(--gray-200);
}

.dark .modal-header {
  border-bottom-color: var(--gray-700);
}

.modal-title {
  font-size: 1.25rem;
  line-height: 1.75rem;
  font-weight: 600;
  color: var(--gray-900);
}

.dark .modal-title {
  color: #fff;
}

.modal-close {
  padding: 0.25rem;
  color: var(--gray-400);
  transition: color 150ms cubic-bezier(0.4, 0, 0.2, 1);
}

.modal-close:hover {
  color: var(--gray-600);
}

.dark .modal-close:hover {
  color: var(--gray-200);
}

.modal-form {
  padding: 1.5rem;
}

.modal-form > * + * {
  margin-top: 1rem;
}

.field-label {
  display: block;
  font-size: 0.875rem;
  line-height: 1.25rem;
  font-weight: 500;
  color: var(--gray-700);
  margin-bottom: 0.25rem;
}

.dark .field-label {
  color: var(--gray-300);
}

.field-input {
  width: 100%;
  padding: 0.5rem 0.75rem;
  border: 1px solid var(--gray-300);
  border-radius: 0.5rem;
  outline: none;
  transition: all 150ms cubic-bezier(0.4, 0, 0.2, 1);
  background-color: #fff;
}

.field-input:focus {
  border-color: var(--blue-500);
  box-shadow: 0 0 0 2px var(--blue-500);
}

.dark .field-input {
  background-color: var(--gray-700);
  border-color: var(--gray-600);
  color: #fff;
}

.field-input.has-error {
  border-color: var(--red-500);
}

.field-error {
  margin-top: 0.25rem;
  font-size: 0.875rem;
  line-height: 1.25rem;
  color: var(--red-600);
}

.dark .field-error {
  color: var(--red-400);
}

.tag-input-row {
  display: flex;
  margin-bottom: 0.5rem;
}

.tag-input-row > * + * {
  margin-left: 0.5rem;
}

.tag-input {
  flex: 1 1 0%;
}

.form-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.form-tag {
  display: inline-flex;
  align-items: center;
  padding: 0.25rem 0.75rem;
  border-radius: 9999px;
  font-size: 0.875rem;
  line-height: 1.25rem;
  background-color: var(--blue-100);
  color: var(--blue-800);
}

.dark .form-tag {
  background-color: rgba(30, 58, 138, 0.3);
  color: var(--blue-200);
}

.form-tag button {
  margin-left: 0.5rem;
  color: var(--blue-600);
}

.form-tag button:hover {
  color: var(--blue-800);
}

.dark .form-tag button {
  color: var(--blue-300);
}

.dark .form-tag button:hover {
  color: var(--blue-100);
}

.form-tag svg {
  width: 0.75rem;
  height: 0.75rem;
}

.modal-actions {
  display: flex;
  padding-top: 1rem;
}

.modal-actions > * + * {
  margin-left: 0.75rem;
}

.modal-actions .button {
  flex: 1 1 0%;
}
