/* ========================================
   RICETTARIO CESARE BATTISTI
   Main Stylesheet
======================================== */

/* Imports */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&display=swap');
@import './utils/variables.css';
@import './utils/utilities.css';
@import './components/recipe-card.css';
@import './components/recipe-detail.css';

/* ===============================
   BASE & RESET
=============================== */

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

* {
  margin: 0;
  padding: 0;
}

html {
  line-height: var(--leading-normal);
  -webkit-text-size-adjust: 100%;
  -moz-tab-size: 4;
  tab-size: 4;
  font-feature-settings: normal;
  font-variation-settings: normal;
}

body {
  font-family: var(--font-family);
  font-size: var(--text-base);
  font-weight: var(--font-normal);
  line-height: var(--leading-normal);
  color: var(--gray-900);
  background-color: var(--gray-50);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

h1, h2, h3, h4, h5, h6 {
  font-weight: var(--font-semibold);
  line-height: var(--leading-tight);
  margin: 0;
}

p {
  margin: 0;
}

a {
  color: inherit;
  text-decoration: inherit;
}

button {
  font-family: inherit;
  font-feature-settings: inherit;
  font-variation-settings: inherit;
  font-size: 100%;
  font-weight: inherit;
  line-height: inherit;
  color: inherit;
  margin: 0;
  padding: 0;
  background: transparent;
  border: 0;
  cursor: pointer;
}

input, select, textarea {
  font-family: inherit;
  font-feature-settings: inherit;
  font-variation-settings: inherit;
  font-size: 100%;
  font-weight: inherit;
  line-height: inherit;
  color: inherit;
  margin: 0;
  padding: 0;
  border: 0;
  background: transparent;
}

img, svg {
  display: block;
  vertical-align: middle;
  max-width: 100%;
  height: auto;
}

/* ===============================
   FOCUS MANAGEMENT
=============================== */

:focus {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
}

:focus:not(:focus-visible) {
  outline: none;
}

:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
}

/* ===============================
   HEADER
=============================== */

.header {
  background: var(--header-bg);
  border-bottom: var(--border) solid var(--header-border);
  position: sticky;
  top: 0;
  z-index: var(--z-40);
  backdrop-filter: blur(8px);
  background-color: rgb(255 255 255 / 0.9);
}

.header__content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  height: var(--header-height);
}

.header__brand {
  flex-shrink: 0;
}

.header__title {
  font-size: var(--text-xl);
  font-weight: var(--font-bold);
  color: var(--primary);
}

.header__title-link:hover {
  color: var(--primary-light);
  transition: color var(--transition-fast) var(--ease-out);
}

.header__search {
  flex: 1;
  max-width: 500px;
  position: relative;
}

.header__actions {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  flex-shrink: 0;
}

/* ===============================
   SEARCH BAR
=============================== */

.search-bar {
  position: relative;
  width: 100%;
}

.search-bar__input {
  width: 100%;
  height: 48px;
  padding: var(--space-3) var(--space-12) var(--space-3) var(--space-4);
  border: var(--border) solid var(--input-border);
  border-radius: var(--input-radius);
  background: var(--input-bg);
  font-size: var(--text-base);
  transition: border-color var(--transition-fast) var(--ease-out), box-shadow var(--transition-fast) var(--ease-out);
}

.search-bar__input:focus {
  border-color: var(--input-border-focus);
  box-shadow: var(--input-shadow-focus);
}

.search-bar__input::placeholder {
  color: var(--gray-500);
}

.search-bar__icon {
  position: absolute;
  right: var(--space-4);
  top: 50%;
  transform: translateY(-50%);
  color: var(--gray-400);
  pointer-events: none;
}

.search-bar__clear {
  position: absolute;
  right: var(--space-4);
  top: 50%;
  transform: translateY(-50%);
  width: 24px;
  height: 24px;
  border-radius: var(--radius-full);
  background: var(--gray-300);
  color: var(--white);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--text-lg);
  line-height: 1;
  transition: background-color var(--transition-fast) var(--ease-out);
}

.search-bar__clear:hover {
  background: var(--gray-400);
}

/* ===============================
   ACTION BUTTONS
=============================== */

.action-button {
  position: relative;
  width: 48px;
  height: 48px;
  border-radius: var(--radius-lg);
  background: var(--white);
  border: var(--border) solid var(--gray-200);
  color: var(--gray-600);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-fast) var(--ease-out);
}

.action-button:hover {
  background: var(--gray-50);
  color: var(--primary);
  transform: translateY(-1px);
  box-shadow: var(--shadow);
}

.action-button__badge {
  position: absolute;
  top: -4px;
  right: -4px;
  min-width: 20px;
  height: 20px;
  border-radius: var(--radius-full);
  background: var(--error);
  color: var(--white);
  font-size: var(--text-xs);
  font-weight: var(--font-medium);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0 var(--space-1);
}

/* ===============================
   FILTERS
=============================== */

.filters {
  background: var(--white);
  border-bottom: var(--border) solid var(--gray-200);
  padding: var(--space-4) 0;
}

.filters__content {
  display: flex;
  justify-content: center;
}

.category-filters {
  display: flex;
  gap: var(--space-2);
  flex-wrap: wrap;
  justify-content: center;
}

.category-filter {
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-full);
  border: var(--border) solid var(--gray-300);
  background: var(--white);
  color: var(--gray-700);
  font-size: var(--text-sm);
  font-weight: var(--font-medium);
  transition: all var(--transition-fast) var(--ease-out);
  white-space: nowrap;
}

.category-filter:hover {
  border-color: var(--primary);
  color: var(--primary);
  background: var(--gray-50);
}

.category-filter--active {
  background: var(--primary);
  border-color: var(--primary);
  color: var(--white);
}

.category-filter--active:hover {
  background: var(--primary-light);
  border-color: var(--primary-light);
  color: var(--white);
}

.category-filter__count {
  opacity: 0.8;
}

/* ===============================
   MAIN CONTENT
=============================== */

.main {
  padding: var(--space-8) 0 var(--space-16);
  min-height: calc(100vh - var(--header-height) - 80px);
}

.results-status {
  margin-bottom: var(--space-6);
  text-align: center;
}

.results-status__text {
  color: var(--gray-600);
  font-size: var(--text-sm);
}

/* ===============================
   RECIPE GRID
=============================== */

.recipe-grid {
  display: grid;
  grid-template-columns: repeat(1, minmax(0, 1fr));
  gap: var(--space-6);
}

@media (min-width: 640px) {
  .recipe-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 1024px) {
  .recipe-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 1280px) {
  .recipe-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

/* ===============================
   NO RESULTS
=============================== */

.no-results {
  text-align: center;
  padding: var(--space-16) var(--space-4);
}

.no-results__content {
  max-width: 400px;
  margin: 0 auto;
}

.no-results__icon {
  margin: 0 auto var(--space-4);
  color: var(--gray-400);
}

.no-results__title {
  font-size: var(--text-xl);
  font-weight: var(--font-semibold);
  color: var(--gray-900);
  margin-bottom: var(--space-2);
}

.no-results__description {
  color: var(--gray-600);
  margin-bottom: var(--space-6);
}

/* ===============================
   LOADING
=============================== */

.loading {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: var(--space-16) var(--space-4);
}

.loading[hidden] {
  display: none !important;
}

.loading__spinner {
  width: 32px;
  height: 32px;
  border: 3px solid var(--gray-200);
  border-top: 3px solid var(--primary);
  border-radius: var(--radius-full);
  animation: spin 1s linear infinite;
  margin-bottom: var(--space-4);
}

.loading__text {
  color: var(--gray-600);
  font-size: var(--text-sm);
}

@keyframes spin {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

/* ===============================
   BUTTONS
=============================== */

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-4);
  border-radius: var(--button-radius);
  font-size: var(--text-sm);
  font-weight: var(--font-medium);
  text-decoration: none;
  border: var(--border) solid transparent;
  transition: all var(--transition-fast) var(--ease-out);
  cursor: pointer;
  white-space: nowrap;
}

.button--primary {
  background: var(--primary);
  color: var(--white);
  box-shadow: var(--button-shadow);
}

.button--primary:hover {
  background: var(--primary-light);
  box-shadow: var(--button-shadow-hover);
  transform: translateY(-1px);
}

.button--secondary {
  background: var(--white);
  color: var(--gray-700);
  border-color: var(--gray-300);
  box-shadow: var(--button-shadow);
}

.button--secondary:hover {
  background: var(--gray-50);
  border-color: var(--gray-400);
  box-shadow: var(--button-shadow-hover);
  transform: translateY(-1px);
}

.button--ghost {
  background: transparent;
  color: var(--gray-700);
}

.button--ghost:hover {
  background: var(--gray-100);
  color: var(--gray-900);
}

.button--sm {
  padding: var(--space-2) var(--space-3);
  font-size: var(--text-xs);
}

.button--lg {
  padding: var(--space-4) var(--space-6);
  font-size: var(--text-base);
}

/* ===============================
   MODAL
=============================== */

.modal {
  position: fixed;
  inset: 0;
  z-index: var(--z-50);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-4);
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-normal) var(--ease-out);
}

.modal[aria-hidden="false"] {
  opacity: 1;
  visibility: visible;
}

.modal__backdrop {
  position: absolute;
  inset: 0;
  background: var(--modal-backdrop);
  backdrop-filter: blur(4px);
}

.modal__content {
  position: relative;
  width: 100%;
  max-width: 800px;
  max-height: 90vh;
  background: var(--modal-bg);
  border-radius: var(--modal-radius);
  box-shadow: var(--modal-shadow);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  transform: scale(0.95);
  transition: transform var(--transition-normal) var(--ease-out);
}

.modal[aria-hidden="false"] .modal__content {
  transform: scale(1);
}

.modal__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-6) var(--space-6) 0;
  flex-shrink: 0;
}

.modal__title {
  font-size: var(--text-xl);
  font-weight: var(--font-semibold);
  color: var(--gray-900);
}

.modal__close {
  width: 32px;
  height: 32px;
  border-radius: var(--radius);
  background: var(--gray-100);
  color: var(--gray-500);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--text-xl);
  line-height: 1;
  transition: all var(--transition-fast) var(--ease-out);
}

.modal__close:hover {
  background: var(--gray-200);
  color: var(--gray-700);
}

.modal__body {
  padding: var(--space-6);
  overflow-y: auto;
  flex: 1;
}

/* ===============================
   TOAST NOTIFICATIONS
=============================== */

.toast-container {
  position: fixed;
  top: var(--space-4);
  right: var(--space-4);
  z-index: var(--z-50);
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  max-width: 400px;
}

.toast {
  padding: var(--space-4);
  border-radius: var(--radius-lg);
  background: var(--white);
  border: var(--border) solid var(--gray-200);
  box-shadow: var(--shadow-lg);
  font-size: var(--text-sm);
  transform: translateX(100%);
  transition: transform var(--transition-normal) var(--ease-out);
}

.toast--show {
  transform: translateX(0);
}

.toast--success {
  border-color: var(--success);
  background: rgb(16 185 129 / 0.05);
  color: var(--success);
}

.toast--error {
  border-color: var(--error);
  background: rgb(239 68 68 / 0.05);
  color: var(--error);
}

.toast--warning {
  border-color: var(--warning);
  background: rgb(245 158 11 / 0.05);
  color: var(--warning);
}

/* ===============================
   RESPONSIVE DESIGN
=============================== */

@media (max-width: 639px) {
  .header__content {
    flex-direction: column;
    gap: var(--space-3);
    height: auto;
    padding: var(--space-4) 0;
  }
  
  .header__search {
    order: 2;
    max-width: none;
  }
  
  .header__actions {
    order: 1;
    align-self: flex-end;
  }
  
  .category-filters {
    gap: var(--space-1);
  }
  
  .category-filter {
    font-size: var(--text-xs);
    padding: var(--space-1) var(--space-3);
  }
  
  .modal__content {
    max-width: none;
    margin: var(--space-2);
    max-height: calc(100vh - 1rem);
  }
}

/* ===============================
   LOADING STATES
   =============================== */

.loading-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 4rem 2rem;
    text-align: center;
    color: var(--primary-color, #2c5282);
}

.loading-spinner {
    width: 40px;
    height: 40px;
    border: 4px solid #e2e8f0;
    border-top: 4px solid var(--primary-color, #2c5282);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto 16px;
}

.loading-text {
    font-size: 16px;
    font-weight: 500;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* ===============================
   PRINT STYLES
=============================== */

@media print {
  .header,
  .filters,
  .modal,
  .toast-container,
  .no-results,
  .loading {
    display: none !important;
  }
  
  .main {
    padding: 0;
  }
  
  .recipe-grid {
    grid-template-columns: 1fr;
    gap: var(--space-4);
  }
}