/* ===========================================
   Main Styles - Postura
   =========================================== */

:root {
  /* Layout */
  --header-height: 64px;

  /* Colors */
  --color-primary: #667eea;
  --color-primary-dark: #5568d3;
  --color-secondary: #764ba2;
  --color-success: #27ae60;
  --color-warning: #e67e22;
  --color-error: #e74c3c;

  --color-text: #2c3e50;
  --color-text-light: #7f8c8d;
  --color-text-muted: #95a5a6;

  --color-bg: #ffffff;
  --color-bg-light: #f8f9fa;
  --color-bg-dark: #1a1a2e;

  --color-border: #e0e0e0;
  --color-border-light: #ecf0f1;

  /* Typography */
  --font-family:
    "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-size-base: 16px;
  --font-size-sm: 0.875rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.25rem;
  --font-size-2xl: 1.5rem;
  --font-size-3xl: 2rem;
  --font-size-4xl: 2.5rem;

  /* Spacing */
  --spacing-xs: 4px;
  --spacing-sm: 8px;
  --spacing-md: 16px;
  --spacing-lg: 24px;
  --spacing-xl: 32px;
  --spacing-2xl: 48px;
  --spacing-3xl: 64px;

  /* Border Radius */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  --radius-full: 9999px;

  /* Shadows */
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.15);
  --shadow-xl: 0 20px 40px rgba(0, 0, 0, 0.2);

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-normal: 300ms ease;
  --transition-slow: 500ms ease;

  /* Z-index layers */
  --z-base: 1;
  --z-dropdown: 100;
  --z-sticky: 500;
  --z-modal: 1000;
  --z-toast: 2000;
}

/* Reset & Base */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: var(--font-size-base);
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-family);
  font-size: 1rem;
  line-height: 1.6;
  color: var(--color-text);
  background-color: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Typography */
h1,
h2,
h3,
h4,
h5,
h6 {
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: var(--spacing-md);
}

h1 {
  font-size: var(--font-size-4xl);
}
h2 {
  font-size: var(--font-size-3xl);
}
h3 {
  font-size: var(--font-size-2xl);
}
h4 {
  font-size: var(--font-size-xl);
}

p {
  margin-bottom: var(--spacing-md);
}

a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--color-primary-dark);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-md) var(--spacing-lg);
  font-family: inherit;
  font-size: 1rem;
  font-weight: 600;
  line-height: 1;
  text-align: center;
  border: none;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-fast);
  min-height: 44px; /* Touch target */
}

.btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

.btn-primary {
  background: linear-gradient(
    135deg,
    var(--color-primary) 0%,
    var(--color-secondary) 100%
  );
  color: white;
  box-shadow: var(--shadow-md);
}

.btn-primary:hover:not(:disabled) {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.btn-secondary {
  background: var(--color-bg-dark);
  color: white;
}

.btn-secondary:hover:not(:disabled) {
  background: #2a2a4a;
}

.btn-outline {
  background: transparent;
  border: 2px solid var(--color-primary);
  color: var(--color-primary);
}

.btn-outline:hover:not(:disabled) {
  background: var(--color-primary);
  color: var(--color-primary);
}

.btn-large {
  padding: var(--spacing-lg) var(--spacing-xl);
  font-size: var(--font-size-lg);
}

.btn-arrow {
  transition: transform var(--transition-fast);
}

.btn:hover .btn-arrow {
  transform: translateX(4px);
}

/* Form Elements */
input,
select,
textarea {
  width: 100%;
  padding: var(--spacing-md);
  font-family: inherit;
  font-size: 1rem;
  border: 2px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-bg);
  transition: all var(--transition-fast);
}

input:focus,
select:focus,
textarea:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

input::placeholder,
textarea::placeholder {
  color: var(--color-text-muted);
}

.form-group {
  margin-bottom: var(--spacing-md);
}

.form-group label {
  display: block;
  font-weight: 600;
  margin-bottom: var(--spacing-sm);
  color: var(--color-text);
}

/* Utilities */
.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
}

/* ===========================================
   SVG ICON SYSTEM - Shared Styles
   =========================================== */

/* Base icon styles */
.icon {
  display: inline-block;
  width: 24px;
  height: 24px;
  fill: none;
  stroke: currentColor;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
  vertical-align: middle;
  flex-shrink: 0;
}

/* Icon sizes */
.icon-xs {
  width: 14px;
  height: 14px;
}
.icon-sm {
  width: 18px;
  height: 18px;
}
.icon-lg {
  width: 28px;
  height: 28px;
}
.icon-xl {
  width: 32px;
  height: 32px;
}
.icon-2xl {
  width: 40px;
  height: 40px;
}

/* Icon colors */
.icon-primary {
  color: var(--color-primary);
}
.icon-success {
  color: var(--color-success);
}
.icon-warning {
  color: var(--color-warning);
}
.icon-error {
  color: var(--color-error);
}
.icon-info {
  color: #3b82f6;
}
.icon-muted {
  color: var(--color-text-light);
}

/* Filled icons (for special cases) */
.icon-filled {
  fill: currentColor;
  stroke: none;
}

/* Icon animation */
.icon-spin {
  animation: iconSpin 1s linear infinite;
}

@keyframes iconSpin {
  from {
    transform: rotate(0deg);
  }
  to {
    transform: rotate(360deg);
  }
}

/* Responsive */
@media (max-width: 768px) {
  :root {
    --font-size-4xl: 2rem;
    --font-size-3xl: 1.75rem;
    --font-size-2xl: 1.375rem;
  }
}
/* ===========================================
   Recommendations Styles
   =========================================== */

/* Loading State */
.recommendations-loading {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-2xl);
  color: var(--color-text-light);
}

.recommendations-loading .spinner {
  width: 40px;
  height: 40px;
  border: 3px solid var(--color-border);
  border-top-color: var(--color-primary);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

.recommendations-loading p {
  margin-top: var(--spacing-md);
}

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

/* Success State (No issues) */
.recommendations-success {
  text-align: center;
  padding: var(--spacing-2xl);
  background: linear-gradient(135deg, #d4edda 0%, #c3e6cb 100%);
  border-radius: var(--radius-lg);
  border: 1px solid #c3e6cb;
}

.recommendations-success .success-icon {
  font-size: 3rem;
  margin-bottom: var(--spacing-md);
}

.recommendations-success h3 {
  color: #155724;
  margin-bottom: var(--spacing-sm);
}

.recommendations-success p {
  color: #1e7e34;
  max-width: 400px;
  margin: 0 auto;
}

/* Intro Text */
.recommendations-intro {
  color: var(--color-text-light);
  margin-bottom: var(--spacing-lg);
  font-size: var(--font-size-sm);
}

/* Summary Section */
.recommendations-summary {
  background: var(--color-bg-light);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  margin-bottom: var(--spacing-xl);
}

.summary-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-md);
}

.summary-header h4 {
  margin: 0;
  font-size: var(--font-size-lg);
}

.severity-badges {
  display: flex;
  gap: var(--spacing-sm);
  flex-wrap: wrap;
}

.severity-badge {
  padding: 4px 10px;
  border-radius: var(--radius-full);
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
}

.severity-badge.high {
  background: #fee2e2;
  color: #dc2626;
}

.severity-badge.medium {
  background: #fef3c7;
  color: #d97706;
}

.severity-badge.low {
  background: #dbeafe;
  color: #2563eb;
}

.section-summary-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
  gap: var(--spacing-sm);
}

.section-summary-item {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-sm) var(--spacing-md);
  background: var(--color-bg);
  border-radius: var(--radius-md);
  border-left: 3px solid var(--color-border);
  font-size: var(--font-size-sm);
}

.section-summary-item.severity-high {
  border-left-color: #dc2626;
}

.section-summary-item.severity-medium {
  border-left-color: #d97706;
}

.section-summary-item.severity-low {
  border-left-color: #2563eb;
}

.section-icon {
  font-size: 1.25rem;
}

.section-name {
  font-weight: 600;
  flex: 1;
}

.issue-count {
  color: var(--color-text-light);
  font-size: 0.75rem;
}

/* Priority Sections */
.recommendations-list {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xl);
}

.priority-header {
  font-size: var(--font-size-lg);
  margin-bottom: var(--spacing-md);
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.priority-section.high .priority-header {
  color: #dc2626;
}

.priority-section.medium .priority-header {
  color: #d97706;
}

.priority-section.low .priority-header {
  color: #2563eb;
}

/* Recommendation Items */
.recommendation-item {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  margin-bottom: var(--spacing-md);
  transition: box-shadow var(--transition-fast);
}

.recommendation-item:hover {
  box-shadow: var(--shadow-md);
}

.recommendation-item.severity-high {
  border-left: 4px solid #dc2626;
}

.recommendation-item.severity-medium {
  border-left: 4px solid #d97706;
}

.recommendation-item.severity-low {
  border-left: 4px solid #2563eb;
}

.rec-header {
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-md);
}

.rec-icon {
  font-size: 1.5rem;
  flex-shrink: 0;
}

.rec-title-group {
  flex: 1;
}

.rec-title {
  margin: 0 0 4px 0;
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-text);
}

.rec-section {
  font-size: 0.75rem;
  color: var(--color-text-light);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.rec-tip {
  color: var(--color-text);
  margin-bottom: var(--spacing-md);
  line-height: 1.5;
}

.rec-details {
  margin-bottom: var(--spacing-md);
}

.rec-details summary {
  cursor: pointer;
  color: var(--color-primary);
  font-weight: 500;
  font-size: var(--font-size-sm);
  padding: var(--spacing-sm) 0;
}

.rec-details summary:hover {
  color: var(--color-primary-dark);
}

.rec-details p {
  padding-top: var(--spacing-sm);
  color: var(--color-text-light);
  font-size: var(--font-size-sm);
  line-height: 1.6;
}

/* Product Suggestion */
.product-suggestion {
  background: linear-gradient(135deg, #f0f9ff 0%, #e0f2fe 100%);
  border: 1px solid #bae6fd;
  border-radius: var(--radius-md);
  padding: var(--spacing-md);
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  flex-wrap: wrap;
}

.product-label {
  font-size: var(--font-size-sm);
  color: var(--color-text-light);
  font-weight: 500;
}

.product-link {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  color: var(--color-primary);
  text-decoration: none;
  font-weight: 600;
  transition: color var(--transition-fast);
}

.product-link:hover {
  color: var(--color-primary-dark);
  text-decoration: underline;
}

.product-name {
  flex: 1;
}

.product-price {
  background: var(--color-primary);
  color: white;
  padding: 2px 8px;
  border-radius: var(--radius-full);
  font-size: 0.75rem;
  font-weight: 600;
}

/* Mobile Responsive Recommendations */
@media (max-width: 576px) {
  .summary-header {
    flex-direction: column;
    align-items: flex-start;
  }

  .section-summary-grid {
    grid-template-columns: 1fr;
  }

  .recommendation-item {
    padding: var(--spacing-md);
  }

  .rec-header {
    flex-direction: row;
    gap: var(--spacing-sm);
  }

  .product-suggestion {
    flex-direction: column;
    align-items: flex-start;
  }
}

/* ===========================================
   Selectable Recommendations & Save Button
   =========================================== */

/* Recommendation item with checkbox */
.recommendation-item {
  cursor: pointer;
  display: flex;
  gap: var(--spacing-md);
  user-select: none;
}

.rec-checkbox {
  flex-shrink: 0;
  width: 28px;
  height: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-top: 2px;
}

.checkbox-icon {
  font-size: 1.5rem;
  color: var(--color-text-light);
  transition: all var(--transition-fast);
}

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

/* Selected state */
.recommendation-item.selected {
  background: linear-gradient(135deg, #ecfdf5 0%, #d1fae5 100%);
  border-color: #10b981;
}

.recommendation-item.selected .checkbox-icon {
  color: #10b981;
}

.recommendation-item.selected .rec-title {
  text-decoration: line-through;
  color: var(--color-text-light);
}

/* Improved animation (when saving) */
.recommendation-item.improved {
  animation: fadeSlideOut 0.5s ease-out forwards;
}

@keyframes fadeSlideOut {
  0% {
    opacity: 1;
    transform: translateX(0);
    max-height: 200px;
    margin-bottom: var(--spacing-md);
  }
  70% {
    opacity: 0;
    transform: translateX(50px);
  }
  100% {
    opacity: 0;
    transform: translateX(50px);
    max-height: 0;
    padding: 0;
    margin-bottom: 0;
    border-width: 0;
  }
}

/* Floating Save Improvements Button */
.save-improvements-btn {
  position: fixed;
  bottom: 24px;
  right: 24px;
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: 14px 24px;
  background: linear-gradient(135deg, #10b981 0%, #059669 100%);
  color: white;
  border: none;
  border-radius: var(--radius-full);
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  box-shadow: 0 4px 20px rgba(16, 185, 129, 0.4);
  z-index: 1000;
  animation: slideUp 0.3s ease-out;
  transition: all var(--transition-fast);
}

.save-improvements-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 25px rgba(16, 185, 129, 0.5);
}

.save-improvements-btn:active {
  transform: translateY(0);
}

.save-improvements-btn:disabled {
  background: var(--color-text-light);
  cursor: not-allowed;
  box-shadow: none;
}

.save-improvements-btn .btn-icon {
  font-size: 1.25rem;
}

.save-improvements-btn .spinner {
  width: 18px;
  height: 18px;
  border: 2px solid rgba(255, 255, 255, 0.3);
  border-top-color: white;
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

@keyframes slideUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Mobile adjustments for save button */
@media (max-width: 576px) {
  .save-improvements-btn {
    left: 16px;
    right: 16px;
    bottom: 16px;
    justify-content: center;
  }

  .rec-checkbox {
    width: 24px;
    height: 24px;
  }

  .checkbox-icon {
    font-size: 1.25rem;
  }
}

/* All complete celebration */
.recommendations-success .success-icon {
  font-size: 4rem;
  margin-bottom: var(--spacing-md);
  animation: bounce 0.6s ease-out;
}

@keyframes bounce {
  0%,
  100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-15px);
  }
}

/* ===========================================
   Progress Tracker Styles
   =========================================== */

.progress-tracker {
  background: linear-gradient(135deg, #f0fdf4 0%, #dcfce7 100%);
  border: 1px solid #bbf7d0;
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  margin-bottom: var(--spacing-xl);
  animation: slideDown 0.4s ease-out;
}

@keyframes slideDown {
  from {
    opacity: 0;
    transform: translateY(-20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.progress-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-md);
}

.progress-header h4 {
  margin: 0;
  color: #166534;
  font-size: var(--font-size-lg);
}

.progress-badge {
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 6px 12px;
  border-radius: var(--radius-full);
  font-weight: 600;
  font-size: var(--font-size-sm);
}

.progress-badge.positive {
  background: #dcfce7;
  color: #16a34a;
}

.progress-badge.negative {
  background: #fee2e2;
  color: #dc2626;
}

.progress-arrow {
  font-size: 1.1em;
}

.progress-comparison {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-lg);
  padding: var(--spacing-md);
  background: white;
  border-radius: var(--radius-md);
  margin-bottom: var(--spacing-md);
}

.comparison-item {
  text-align: center;
}

.comparison-label {
  display: block;
  font-size: var(--font-size-sm);
  color: var(--color-text-light);
  margin-bottom: 4px;
}

.comparison-score {
  font-size: 2rem;
  font-weight: 700;
}

.comparison-item.start .comparison-score {
  color: var(--color-text-light);
}

.comparison-item.current .comparison-score {
  color: #16a34a;
}

.comparison-arrow {
  font-size: 1.5rem;
  color: var(--color-text-light);
}

.progress-timeline {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
  padding: var(--spacing-sm) 0;
  margin-bottom: var(--spacing-md);
  max-height: 200px;
  overflow-y: auto;
}

.timeline-item {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  padding: var(--spacing-sm) var(--spacing-md);
  background: white;
  border-radius: var(--radius-md);
  border-left: 3px solid #d1d5db;
}

.timeline-item.initial {
  border-left-color: #9ca3af;
}

.timeline-item.improvement {
  border-left-color: #16a34a;
}

.timeline-dot {
  font-size: 1.25rem;
  flex-shrink: 0;
}

.timeline-content {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  flex: 1;
  flex-wrap: wrap;
}

.timeline-score {
  font-weight: 700;
  color: var(--color-text);
  min-width: 50px;
}

.timeline-label {
  color: var(--color-text-light);
  font-size: var(--font-size-sm);
  flex: 1;
}

.timeline-time {
  color: var(--color-text-muted);
  font-size: 0.75rem;
}

.progress-summary {
  text-align: center;
  color: #166534;
  font-size: var(--font-size-sm);
  margin: 0;
}

.progress-summary strong {
  color: #15803d;
}

/* Mobile responsive progress tracker */
@media (max-width: 576px) {
  .progress-header {
    flex-direction: column;
    align-items: flex-start;
  }

  .progress-comparison {
    gap: var(--spacing-md);
  }

  .comparison-score {
    font-size: 1.5rem;
  }

  .timeline-content {
    flex-direction: column;
    align-items: flex-start;
    gap: 4px;
  }
}

/* ===========================================
   Modal Dialog Styles
   =========================================== */

.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.5);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-md);
  z-index: 10000;
  opacity: 0;
  visibility: hidden;
  transition: all 0.3s ease;
}

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

.modal-dialog {
  background: white;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-xl);
  max-width: 420px;
  width: 100%;
  transform: scale(0.9) translateY(20px);
  transition: transform 0.3s ease;
  overflow: hidden;
}

.modal-overlay.active .modal-dialog {
  transform: scale(1) translateY(0);
}

.modal-header {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  padding: var(--spacing-lg);
  border-bottom: 1px solid var(--color-border);
}

.modal-icon {
  font-size: 1.75rem;
  flex-shrink: 0;
}

.modal-title {
  margin: 0;
  font-size: var(--font-size-xl);
  color: var(--color-text);
}

.modal-body {
  padding: var(--spacing-lg);
}

.modal-body p {
  margin: 0;
  color: var(--color-text);
  line-height: 1.6;
}

.modal-footer {
  display: flex;
  gap: var(--spacing-md);
  padding: var(--spacing-lg);
  background: var(--color-bg-light);
  border-top: 1px solid var(--color-border);
}

.modal-footer .btn {
  flex: 1;
  justify-content: center;
}

/* Modal types */
.modal-warning .modal-header {
  background: linear-gradient(135deg, #fef3c7 0%, #fde68a 100%);
}

.modal-warning .modal-icon {
  color: #d97706;
}

.modal-error .modal-header {
  background: linear-gradient(135deg, #fee2e2 0%, #fecaca 100%);
}

.modal-error .modal-icon {
  color: #dc2626;
}

.modal-info .modal-header {
  background: linear-gradient(135deg, #dbeafe 0%, #bfdbfe 100%);
}

.modal-info .modal-icon {
  color: #2563eb;
}

/* Mobile modal */
@media (max-width: 576px) {
  .modal-dialog {
    max-width: 100%;
    margin: var(--spacing-md);
  }

  .modal-footer {
    flex-direction: column-reverse;
  }

  .modal-footer .btn {
    width: 100%;
  }
}