/**
 * Components CSS - Life Tracker by Bonn
 * Design System v2.0
 *
 * Componenti UI riutilizzabili con il nuovo design system.
 * Richiede: design-tokens.css
 */

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

/* Base Button */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--btn-padding-y) var(--btn-padding-x);
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: var(--btn-font-weight);
  line-height: 1;
  text-decoration: none;
  border: none;
  border-radius: var(--btn-radius);
  cursor: pointer;
  transition: all var(--transition-fast);
  white-space: nowrap;
  user-select: none;
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  pointer-events: none;
}

/* Primary Button */
.btn-primary {
  background-color: var(--color-primary-500);
  color: var(--color-white);
  box-shadow: var(--shadow-primary);
}

.btn-primary:hover {
  background-color: var(--color-primary-600);
  box-shadow: var(--shadow-primary-lg);
  transform: translateY(-1px);
}

.btn-primary:active {
  background-color: var(--color-primary-700);
  transform: translateY(0);
}

/* Secondary Button */
.btn-secondary {
  background-color: var(--color-secondary-500);
  color: var(--color-white);
  box-shadow: var(--shadow-secondary);
}

.btn-secondary:hover {
  background-color: var(--color-secondary-600);
  transform: translateY(-1px);
}

.btn-secondary:active {
  background-color: var(--color-secondary-700);
  transform: translateY(0);
}

/* Outline Button */
.btn-outline {
  background-color: transparent;
  color: var(--color-primary-600);
  border: 2px solid var(--color-primary-500);
}

.btn-outline:hover {
  background-color: var(--color-primary-50);
  border-color: var(--color-primary-600);
}

.btn-outline:active {
  background-color: var(--color-primary-100);
}

/* Ghost Button */
.btn-ghost {
  background-color: transparent;
  color: var(--color-gray-600);
}

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

.btn-ghost:active {
  background-color: var(--color-gray-200);
}

/* Button Sizes */
.btn-sm {
  padding: var(--space-2) var(--space-3);
  font-size: var(--text-xs);
  border-radius: var(--radius-lg);
}

.btn-lg {
  padding: var(--space-4) var(--space-6);
  font-size: var(--text-base);
  border-radius: var(--radius-xl);
}

/* Icon Button */
.btn-icon {
  padding: var(--space-2-5);
  border-radius: var(--radius-lg);
}

.btn-icon.btn-sm {
  padding: var(--space-2);
}

.btn-icon.btn-lg {
  padding: var(--space-3);
}

/* ===========================================
   CARDS
   =========================================== */

.card {
  background-color: var(--color-surface);
  border-radius: var(--card-radius);
  padding: var(--card-padding);
  border: var(--card-border);
  box-shadow: var(--card-shadow);
  transition: all var(--transition-normal);
}

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

.card-interactive {
  cursor: pointer;
}

.card-interactive:hover {
  border-color: var(--color-primary-300);
}

.card-interactive:active {
  transform: scale(0.99);
}

/* Card Header */
.card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-4);
}

.card-title {
  font-family: var(--font-heading);
  font-size: var(--text-lg);
  font-weight: var(--font-semibold);
  color: var(--color-gray-900);
}

.card-subtitle {
  font-size: var(--text-sm);
  color: var(--color-gray-500);
  margin-top: var(--space-1);
}

/* Card Body */
.card-body {
  color: var(--color-gray-600);
}

/* Card Footer */
.card-footer {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: var(--space-3);
  margin-top: var(--space-4);
  padding-top: var(--space-4);
  border-top: 1px solid var(--color-gray-200);
}

/* Stat Card */
.stat-card {
  background-color: var(--color-surface);
  border-radius: var(--radius-2xl);
  padding: var(--space-5);
  border: var(--card-border);
  box-shadow: var(--shadow-sm);
  text-align: center;
  transition: all var(--transition-normal);
}

.stat-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
  border-color: var(--color-primary-200);
}

.stat-card-label {
  font-size: var(--text-xs);
  font-weight: var(--font-semibold);
  text-transform: uppercase;
  letter-spacing: var(--tracking-wider);
  color: var(--color-gray-500);
  margin-bottom: var(--space-2);
}

.stat-card-value {
  font-family: var(--font-heading);
  font-size: var(--text-3xl);
  font-weight: var(--font-extrabold);
  color: var(--color-gray-900);
  line-height: 1;
}

.stat-card-value.positive {
  color: var(--color-success);
}

.stat-card-value.negative {
  color: var(--color-error);
}

.stat-card-value.primary {
  color: var(--color-primary-600);
}

.stat-card-unit {
  font-size: var(--text-sm);
  font-weight: var(--font-medium);
  color: var(--color-gray-400);
  margin-left: var(--space-1);
}

/* Feature Card (with icon) */
.feature-card {
  display: flex;
  align-items: flex-start;
  gap: var(--space-4);
  background-color: var(--color-surface);
  border-radius: var(--radius-2xl);
  padding: var(--space-5);
  border: var(--card-border);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-normal);
}

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

.feature-card-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-xl);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--text-xl);
  flex-shrink: 0;
}

.feature-card-icon.primary {
  background-color: var(--color-primary-100);
  color: var(--color-primary-600);
}

.feature-card-icon.secondary {
  background-color: var(--color-secondary-100);
  color: var(--color-secondary-600);
}

.feature-card-icon.accent {
  background-color: var(--color-accent-100);
  color: var(--color-accent-600);
}

.feature-card-content {
  flex: 1;
  min-width: 0;
}

.feature-card-title {
  font-family: var(--font-heading);
  font-size: var(--text-base);
  font-weight: var(--font-semibold);
  color: var(--color-gray-900);
  margin-bottom: var(--space-1);
}

.feature-card-description {
  font-size: var(--text-sm);
  color: var(--color-gray-500);
  line-height: var(--leading-relaxed);
}

/* ===========================================
   INPUTS
   =========================================== */

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

.input-label {
  font-size: var(--text-sm);
  font-weight: var(--font-medium);
  color: var(--color-gray-700);
}

.input-label.required::after {
  content: '*';
  color: var(--color-error);
  margin-left: var(--space-1);
}

.input {
  padding: var(--input-padding-y) var(--input-padding-x);
  font-family: var(--font-body);
  font-size: var(--text-base);
  color: var(--color-gray-900);
  background-color: var(--color-surface);
  border: var(--input-border);
  border-radius: var(--input-radius);
  transition: all var(--transition-fast);
  width: 100%;
}

.input::placeholder {
  color: var(--color-gray-400);
}

.input:hover {
  border-color: var(--color-gray-300);
}

.input:focus {
  outline: none;
  border-color: var(--color-primary-500);
  box-shadow: var(--input-focus-ring);
}

.input:disabled {
  background-color: var(--color-gray-100);
  color: var(--color-gray-400);
  cursor: not-allowed;
}

/* Input Error State */
.input.error {
  border-color: var(--color-error);
}

.input.error:focus {
  box-shadow: 0 0 0 3px rgb(239 68 68 / 0.15);
}

.input-error-message {
  font-size: var(--text-sm);
  color: var(--color-error);
}

/* Input with icon */
.input-icon-wrapper {
  position: relative;
}

.input-icon-wrapper .input {
  padding-left: var(--space-10);
}

.input-icon {
  position: absolute;
  left: var(--space-3);
  top: 50%;
  transform: translateY(-50%);
  color: var(--color-gray-400);
  pointer-events: none;
}

/* Select */
.select {
  appearance: none;
  padding: var(--input-padding-y) var(--input-padding-x);
  padding-right: var(--space-10);
  font-family: var(--font-body);
  font-size: var(--text-base);
  color: var(--color-gray-900);
  background-color: var(--color-surface);
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 24 24' stroke='%2378716C'%3E%3Cpath stroke-linecap='round' stroke-linejoin='round' stroke-width='2' d='M19 9l-7 7-7-7'%3E%3C/path%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right var(--space-3) center;
  background-size: 20px;
  border: var(--input-border);
  border-radius: var(--input-radius);
  transition: all var(--transition-fast);
  cursor: pointer;
  width: 100%;
}

.select:hover {
  border-color: var(--color-gray-300);
}

.select:focus {
  outline: none;
  border-color: var(--color-primary-500);
  box-shadow: var(--input-focus-ring);
}

/* ===========================================
   BADGES
   =========================================== */

.badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding: var(--space-1) var(--space-2-5);
  font-size: var(--text-xs);
  font-weight: var(--font-semibold);
  border-radius: var(--radius-full);
  white-space: nowrap;
}

.badge-primary {
  background-color: var(--color-primary-100);
  color: var(--color-primary-700);
}

.badge-secondary {
  background-color: var(--color-secondary-100);
  color: var(--color-secondary-700);
}

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

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

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

.badge-info {
  background-color: var(--color-info-light);
  color: var(--color-info-dark);
}

.badge-neutral {
  background-color: var(--color-gray-100);
  color: var(--color-gray-700);
}

/* ===========================================
   PROGRESS
   =========================================== */

.progress-bar {
  width: 100%;
  height: 8px;
  background-color: var(--color-gray-200);
  border-radius: var(--radius-full);
  overflow: hidden;
}

.progress-bar-fill {
  height: 100%;
  border-radius: var(--radius-full);
  transition: width var(--transition-slow);
}

.progress-bar-fill.primary {
  background: linear-gradient(90deg, var(--color-primary-400), var(--color-primary-600));
}

.progress-bar-fill.success {
  background: linear-gradient(90deg, var(--color-success), var(--color-success-dark));
}

.progress-bar-fill.warning {
  background: linear-gradient(90deg, var(--color-warning), var(--color-warning-dark));
}

.progress-bar-fill.error {
  background: linear-gradient(90deg, var(--color-error), var(--color-error-dark));
}

/* Circular Progress */
.progress-circle {
  position: relative;
  width: 80px;
  height: 80px;
}

.progress-circle svg {
  transform: rotate(-90deg);
}

.progress-circle-bg {
  fill: none;
  stroke: var(--color-gray-200);
  stroke-width: 8;
}

.progress-circle-fill {
  fill: none;
  stroke: var(--color-primary-500);
  stroke-width: 8;
  stroke-linecap: round;
  transition: stroke-dashoffset var(--transition-slow);
}

.progress-circle-text {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  font-family: var(--font-heading);
  font-size: var(--text-lg);
  font-weight: var(--font-bold);
  color: var(--color-gray-900);
}

/* ===========================================
   TABS
   =========================================== */

.tabs {
  display: flex;
  gap: var(--space-1);
  background-color: var(--color-gray-100);
  padding: var(--space-1);
  border-radius: var(--radius-xl);
}

.tab {
  flex: 1;
  padding: var(--space-2-5) var(--space-4);
  font-size: var(--text-sm);
  font-weight: var(--font-medium);
  color: var(--color-gray-600);
  background-color: transparent;
  border: none;
  border-radius: var(--radius-lg);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.tab:hover {
  color: var(--color-gray-900);
}

.tab.active {
  background-color: var(--color-surface);
  color: var(--color-primary-600);
  box-shadow: var(--shadow-sm);
}

/* Underline Tabs */
.tabs-underline {
  display: flex;
  gap: var(--space-6);
  border-bottom: 2px solid var(--color-gray-200);
}

.tab-underline {
  padding: var(--space-3) 0;
  font-size: var(--text-sm);
  font-weight: var(--font-medium);
  color: var(--color-gray-500);
  background-color: transparent;
  border: none;
  border-bottom: 2px solid transparent;
  margin-bottom: -2px;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.tab-underline:hover {
  color: var(--color-gray-900);
}

.tab-underline.active {
  color: var(--color-primary-600);
  border-bottom-color: var(--color-primary-500);
}

/* ===========================================
   MODALS
   =========================================== */

.modal-backdrop {
  position: fixed;
  inset: 0;
  background-color: rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(4px);
  z-index: var(--z-modal-backdrop);
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-normal);
}

.modal-backdrop.active {
  opacity: 1;
  visibility: visible;
}

.modal {
  position: fixed;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%) scale(0.95);
  width: 90%;
  max-width: 500px;
  max-height: 90vh;
  background-color: var(--color-surface);
  border-radius: var(--radius-2xl);
  box-shadow: var(--shadow-2xl);
  z-index: var(--z-modal);
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-normal);
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

.modal.active {
  opacity: 1;
  visibility: visible;
  transform: translate(-50%, -50%) scale(1);
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-5) var(--space-6);
  border-bottom: 1px solid var(--color-gray-200);
}

.modal-title {
  font-family: var(--font-heading);
  font-size: var(--text-xl);
  font-weight: var(--font-semibold);
  color: var(--color-gray-900);
}

.modal-close {
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: transparent;
  border: none;
  border-radius: var(--radius-lg);
  color: var(--color-gray-500);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.modal-close:hover {
  background-color: var(--color-gray-100);
  color: var(--color-gray-900);
}

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

.modal-footer {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: var(--space-3);
  padding: var(--space-5) var(--space-6);
  border-top: 1px solid var(--color-gray-200);
}

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

.toast-container {
  position: fixed;
  bottom: var(--space-6);
  right: var(--space-6);
  z-index: var(--z-toast);
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.toast {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  padding: var(--space-4);
  background-color: var(--color-surface);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-lg);
  border-left: 4px solid var(--color-gray-400);
  min-width: 300px;
  max-width: 400px;
  animation: slideInRight 0.3s ease-out;
}

@keyframes slideInRight {
  from {
    transform: translateX(100%);
    opacity: 0;
  }
  to {
    transform: translateX(0);
    opacity: 1;
  }
}

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

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

.toast.warning {
  border-left-color: var(--color-warning);
}

.toast.info {
  border-left-color: var(--color-info);
}

.toast-icon {
  font-size: var(--text-xl);
  flex-shrink: 0;
}

.toast-content {
  flex: 1;
  min-width: 0;
}

.toast-title {
  font-weight: var(--font-semibold);
  color: var(--color-gray-900);
  margin-bottom: var(--space-1);
}

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

.toast-close {
  background: none;
  border: none;
  color: var(--color-gray-400);
  cursor: pointer;
  padding: var(--space-1);
  flex-shrink: 0;
}

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

/* ===========================================
   AVATARS
   =========================================== */

.avatar {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-full);
  background-color: var(--color-primary-100);
  color: var(--color-primary-700);
  font-family: var(--font-heading);
  font-weight: var(--font-semibold);
  font-size: var(--text-sm);
  overflow: hidden;
}

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

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

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

.avatar-xl {
  width: 80px;
  height: 80px;
  font-size: var(--text-2xl);
}

/* Avatar Group */
.avatar-group {
  display: flex;
}

.avatar-group .avatar {
  border: 2px solid var(--color-surface);
  margin-left: -12px;
}

.avatar-group .avatar:first-child {
  margin-left: 0;
}

/* ===========================================
   DIVIDERS
   =========================================== */

.divider {
  height: 1px;
  background-color: var(--color-gray-200);
  margin: var(--space-4) 0;
}

.divider-vertical {
  width: 1px;
  height: auto;
  align-self: stretch;
  background-color: var(--color-gray-200);
  margin: 0 var(--space-4);
}

.divider-text {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  color: var(--color-gray-500);
  font-size: var(--text-sm);
}

.divider-text::before,
.divider-text::after {
  content: '';
  flex: 1;
  height: 1px;
  background-color: var(--color-gray-200);
}

/* ===========================================
   EMPTY STATES
   =========================================== */

.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: 80px;
  height: 80px;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: var(--color-gray-100);
  border-radius: var(--radius-full);
  font-size: var(--text-4xl);
  margin-bottom: var(--space-4);
}

.empty-state-title {
  font-family: var(--font-heading);
  font-size: var(--text-lg);
  font-weight: var(--font-semibold);
  color: var(--color-gray-900);
  margin-bottom: var(--space-2);
}

.empty-state-description {
  font-size: var(--text-sm);
  color: var(--color-gray-500);
  max-width: 300px;
  margin-bottom: var(--space-6);
}

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

.spinner {
  width: 24px;
  height: 24px;
  border: 3px solid var(--color-gray-200);
  border-top-color: var(--color-primary-500);
  border-radius: var(--radius-full);
  animation: spin 0.8s linear infinite;
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

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

.spinner-lg {
  width: 40px;
  height: 40px;
  border-width: 4px;
}

/* Skeleton Loading */
.skeleton {
  background: linear-gradient(
    90deg,
    var(--color-gray-200) 25%,
    var(--color-gray-100) 50%,
    var(--color-gray-200) 75%
  );
  background-size: 200% 100%;
  animation: shimmer 1.5s infinite;
  border-radius: var(--radius-md);
}

@keyframes shimmer {
  0% {
    background-position: 200% 0;
  }
  100% {
    background-position: -200% 0;
  }
}

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

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

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

/* ===========================================
   LISTS
   =========================================== */

.list {
  display: flex;
  flex-direction: column;
}

.list-item {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-lg);
  transition: all var(--transition-fast);
}

.list-item:hover {
  background-color: var(--color-gray-50);
}

.list-item-interactive {
  cursor: pointer;
}

.list-item-interactive:active {
  background-color: var(--color-gray-100);
}

.list-item-icon {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: var(--color-gray-100);
  border-radius: var(--radius-lg);
  font-size: var(--text-lg);
  flex-shrink: 0;
}

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

.list-item-title {
  font-weight: var(--font-medium);
  color: var(--color-gray-900);
}

.list-item-subtitle {
  font-size: var(--text-sm);
  color: var(--color-gray-500);
}

.list-item-action {
  flex-shrink: 0;
}

/* Divider between items */
.list-divided .list-item {
  border-bottom: 1px solid var(--color-gray-200);
  border-radius: 0;
}

.list-divided .list-item:last-child {
  border-bottom: none;
}

/* ===========================================
   UTILITY CLASSES
   =========================================== */

/* Text colors */
.text-primary { color: var(--color-primary-600); }
.text-secondary { color: var(--color-secondary-600); }
.text-success { color: var(--color-success); }
.text-warning { color: var(--color-warning); }
.text-error { color: var(--color-error); }
.text-muted { color: var(--color-gray-500); }

/* Background colors */
.bg-primary { background-color: var(--color-primary-500); }
.bg-primary-light { background-color: var(--color-primary-50); }
.bg-surface { background-color: var(--color-surface); }
.bg-muted { background-color: var(--color-gray-100); }

/* Flex utilities */
.flex { display: flex; }
.flex-col { flex-direction: column; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }
.justify-center { justify-content: center; }
.gap-1 { gap: var(--space-1); }
.gap-2 { gap: var(--space-2); }
.gap-3 { gap: var(--space-3); }
.gap-4 { gap: var(--space-4); }

/* Spacing utilities */
.mt-2 { margin-top: var(--space-2); }
.mt-4 { margin-top: var(--space-4); }
.mb-2 { margin-bottom: var(--space-2); }
.mb-4 { margin-bottom: var(--space-4); }
.p-4 { padding: var(--space-4); }
.p-6 { padding: var(--space-6); }

/* Visibility */
.hidden { display: none !important; }
.invisible { visibility: hidden; }

/* Screen reader only */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}