/* Obstetric Calculator - Modern Pink Theme */

:root {
  /* Pink Color Palette */
  --primary: #E91E63;
  --primary-dark: #C2185B;
  --primary-light: #F48FB1;
  --secondary: #FF4081;
  --secondary-light: #FF80AB;
  --accent: #F8BBD0;
  --background: #FCE4EC;
  --surface: #FFFFFF;
  --text-primary: #424242;
  --text-secondary: #757575;
  --success: #4CAF50;
  --warning: #FFC107;
  --danger: #F44336;

  /* Spacing */
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;

  /* Border Radius */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;

  /* Shadows */
  --shadow-sm: 0 2px 4px rgba(233, 30, 99, 0.1);
  --shadow-md: 0 4px 12px rgba(233, 30, 99, 0.15);
  --shadow-lg: 0 8px 24px rgba(233, 30, 99, 0.2);

  /* Transitions */
  --transition: all 0.3s ease;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
  background: linear-gradient(135deg, var(--background) 0%, #F8BBD0 100%);
  min-height: 100vh;
  color: var(--text-primary);
  line-height: 1.6;
}

/* Header — scrolls with page (no sticky overlay) */
.header {
  background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
  color: white;
  padding: var(--spacing-sm) var(--spacing-md) var(--spacing-sm);
  text-align: center;
  box-shadow: var(--shadow-sm);
}

.header h1 {
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: 0.15rem;
  line-height: 1.25;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-xs);
}

.header p {
  opacity: 0.92;
  font-size: 0.78rem;
  margin: 0;
  line-height: 1.35;
}

.header .time {
  margin-top: 0.2rem;
  font-size: 0.72rem;
  opacity: 0.85;
}

/* Navigation Tabs — scrolls with page (no fixed overlay) */
.nav-tabs {
  display: flex;
  gap: var(--spacing-xs);
  padding: var(--spacing-sm) var(--spacing-md);
  background: var(--surface);
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
  box-shadow: var(--shadow-sm);
}

.nav-tabs::-webkit-scrollbar {
  display: none;
}

.nav-tab {
  flex: 0 0 auto;
  padding: 0.35rem 0.65rem;
  border: none;
  background: var(--background);
  color: var(--text-primary);
  border-radius: var(--radius-md);
  font-size: 0.8rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  white-space: nowrap;
}

.nav-tab:hover {
  background: var(--accent);
  transform: translateY(-2px);
}

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

/* Main Content */
.main-content {
  padding: var(--spacing-md);
  max-width: 800px;
  margin: 0 auto;
  padding-bottom: 100px;
}

/* Calculator Sections */
.calculator-section {
  display: none;
  animation: fadeIn 0.3s ease;
}

.calculator-section.active {
  display: block;
}

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Cards */
.card {
  background: var(--surface);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  margin-bottom: var(--spacing-md);
  box-shadow: var(--shadow-md);
  transition: var(--transition);
}

.card:hover {
  box-shadow: var(--shadow-lg);
}

.card-title {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--primary);
  margin-bottom: var(--spacing-md);
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

/* Form Elements */
.form-group {
  margin-bottom: var(--spacing-md);
}

.form-group label {
  display: block;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: var(--spacing-sm);
  font-size: 0.9rem;
}

.form-group input,
.form-group select {
  width: 100%;
  padding: var(--spacing-md);
  border: 2px solid var(--accent);
  border-radius: var(--radius-md);
  font-size: 1rem;
  transition: var(--transition);
  background: var(--surface);
}

.form-group input:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(233, 30, 99, 0.1);
}

.form-group input[type="date"] {
  color: var(--text-primary);
}

.ga-inputs-label {
  display: block;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: var(--spacing-sm);
  font-size: 0.9rem;
}

.ga-inputs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--spacing-sm);
}

.ga-inputs input[type="number"] {
  width: 4.5rem;
  padding: var(--spacing-md);
  border: 2px solid var(--accent);
  border-radius: var(--radius-md);
  font-size: 1rem;
  background: var(--surface);
}

.ga-inputs input[type="number"]:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(233, 30, 99, 0.1);
}

.ga-inputs-suffix {
  font-size: 0.9rem;
  color: var(--text-primary);
  margin-inline-end: var(--spacing-xs);
}

.form-group input[type="date"]::-webkit-calendar-picker-indicator {
  cursor: pointer;
  filter: invert(0.5) hue-rotate(180deg);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-md) var(--spacing-lg);
  border: none;
  border-radius: var(--radius-md);
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  width: 100%;
}

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

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

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

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

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

.btn-large {
  padding: var(--spacing-lg) var(--spacing-xl);
  font-size: 1.1rem;
}

.btn-contraction {
  background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
  color: white;
  border-radius: 50%;
  width: 150px;
  height: 150px;
  font-size: 1.2rem;
  box-shadow: var(--shadow-lg);
  margin: var(--spacing-lg) auto;
  display: flex;
  align-items: center;
  justify-content: center;
}

.btn-contraction.active {
  animation: pulse 1s infinite;
  background: linear-gradient(135deg, var(--secondary) 0%, var(--primary-dark) 100%);
}

@keyframes pulse {
  0%, 100% {
    transform: scale(1);
  }
  50% {
    transform: scale(1.05);
  }
}

.btn-movement {
  background: linear-gradient(135deg, #9C27B0 0%, #E91E63 100%);
  color: white;
}

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

/* Result Cards */
.results-container {
  margin-top: var(--spacing-lg);
}

.result-card {
  background: linear-gradient(135deg, var(--surface) 0%, var(--background) 100%);
  border-radius: var(--radius-md);
  padding: var(--spacing-lg);
  margin-bottom: var(--spacing-md);
  text-align: center;
  border: 1px solid var(--accent);
  transition: var(--transition);
}

.result-card.highlight {
  background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
  color: white;
  border: none;
  box-shadow: var(--shadow-lg);
}

.result-card.success {
  background: linear-gradient(135deg, var(--success) 0%, #8BC34A 100%);
  color: white;
  border: none;
}

.result-icon {
  font-size: 2.5rem;
  margin-bottom: var(--spacing-sm);
}

.result-label {
  font-size: 0.85rem;
  opacity: 0.8;
  margin-bottom: var(--spacing-xs);
}

.result-value {
  font-size: 1.4rem;
  font-weight: 700;
}

.result-subtext {
  font-size: 0.85rem;
  margin-top: var(--spacing-sm);
  opacity: 0.9;
}

/* Compact pregnancy summary (replaces stacked result cards) */
.preg-summary {
  background: var(--surface);
  border-radius: var(--radius-lg);
  border: 1px solid var(--accent);
  box-shadow: var(--shadow-md);
  overflow: hidden;
  text-align: start;
}

.preg-summary__hero {
  background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
  color: white;
  padding: var(--spacing-md) var(--spacing-lg);
}

.preg-summary__hero-row {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-xs);
}

.preg-summary__ga {
  font-size: 1.35rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.preg-summary__trim {
  font-size: 0.8rem;
  font-weight: 600;
  opacity: 0.95;
  padding: 0.25rem 0.6rem;
  background: rgba(255, 255, 255, 0.2);
  border-radius: var(--radius-xl);
}

.preg-summary__edd-line {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 0.35rem 0.75rem;
  font-size: 0.95rem;
  margin-bottom: var(--spacing-sm);
  opacity: 0.95;
}

.preg-summary__edd-label {
  font-weight: 600;
}

.preg-summary__edd-val {
  font-weight: 700;
  font-size: 1.05rem;
}

.preg-summary__bar {
  height: 8px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.25);
  overflow: hidden;
  margin-bottom: var(--spacing-xs);
}

.preg-summary__bar-fill {
  height: 100%;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.95);
  transition: width 0.4s ease;
}

.preg-summary__pct {
  font-size: 0.8rem;
  margin: 0;
  opacity: 0.9;
}

.preg-summary__main {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-md);
  padding: var(--spacing-md) var(--spacing-lg);
}

@media (min-width: 560px) {
  .preg-summary__main {
    grid-template-columns: 1.1fr 1fr;
    align-items: start;
  }
}

.preg-summary__size {
  display: flex;
  gap: var(--spacing-md);
  align-items: flex-start;
}

.preg-summary__emoji {
  flex-shrink: 0;
  width: 4.5rem;
  height: 4.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 3rem;
  line-height: 1;
  background: linear-gradient(145deg, var(--background) 0%, #fff 100%);
  border-radius: var(--radius-lg);
  border: 1px solid var(--accent);
  box-shadow: var(--shadow-sm);
}

.preg-summary__size-title {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-secondary);
  font-weight: 700;
  margin: 0 0 var(--spacing-xs);
}

.preg-summary__size-headline {
  margin: 0 0 var(--spacing-sm);
  font-size: 0.95rem;
  line-height: 1.45;
  color: var(--text-primary);
}

.preg-summary__fact {
  margin: 0;
  font-size: 0.85rem;
  line-height: 1.5;
  color: var(--text-secondary);
}

.preg-summary__dates-h {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-secondary);
  margin: 0 0 var(--spacing-sm);
  font-weight: 700;
}

.preg-summary__dl {
  margin: 0;
}

.preg-summary__dl-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.2fr);
  gap: var(--spacing-xs) var(--spacing-md);
  padding: var(--spacing-sm) 0;
  border-bottom: 1px solid var(--accent);
  font-size: 0.88rem;
}

.preg-summary__dl-row:last-child {
  border-bottom: none;
}

.preg-summary__dl-row dt {
  font-weight: 600;
  color: var(--text-secondary);
  margin: 0;
}

.preg-summary__dl-row dd {
  margin: 0;
  font-weight: 600;
  color: var(--text-primary);
  text-align: end;
}

.preg-summary__dl-row--accent dd {
  color: var(--primary);
}

.preg-summary__foot {
  display: grid;
  gap: var(--spacing-sm);
  padding: var(--spacing-sm) var(--spacing-lg) var(--spacing-md);
  background: var(--background);
  border-top: 1px solid var(--accent);
  font-size: 0.88rem;
  line-height: 1.45;
}

@media (min-width: 480px) {
  .preg-summary__foot {
    grid-template-columns: 1fr 1fr;
    align-items: start;
  }
}

.preg-summary__foot-item {
  color: var(--text-primary);
}

.preg-summary__pill {
  display: inline-block;
  padding: 0.35rem 0.65rem;
  background: rgba(76, 175, 80, 0.15);
  color: var(--success);
  border-radius: var(--radius-md);
  font-weight: 600;
  font-size: 0.85rem;
}

.preg-summary__milestone {
  color: var(--text-primary);
}

.preg-summary__disclaimer {
  margin: 0;
  padding: var(--spacing-sm) var(--spacing-lg) var(--spacing-md);
  font-size: 0.7rem;
  line-height: 1.4;
  color: var(--text-secondary);
  background: var(--background);
  border-top: 1px solid var(--accent);
}

html[dir="rtl"] .preg-summary__hero-row {
  flex-direction: row-reverse;
}

html[dir="rtl"] .preg-summary__edd-line {
  flex-direction: row-reverse;
}

html[dir="rtl"] .preg-summary__size {
  flex-direction: row-reverse;
}

html[dir="rtl"] .preg-summary__dl-row dd {
  text-align: start;
}

.result-panel-error {
  border-color: var(--danger) !important;
  background: linear-gradient(135deg, #ffebee 0%, #fce4ec 100%) !important;
  color: var(--text-primary);
}

.result-panel-error .result-label {
  color: var(--danger);
  font-weight: 700;
  opacity: 1;
}

.result-panel-info {
  border-color: var(--primary) !important;
  background: linear-gradient(135deg, #fce4ec 0%, var(--surface) 100%) !important;
}

/* Contraction Timer */
.contraction-timer {
  text-align: center;
  padding: var(--spacing-lg);
}

.contraction-status {
  font-size: 1.1rem;
  color: var(--primary);
  font-weight: 600;
  margin-bottom: var(--spacing-md);
}

.contraction-list {
  background: var(--background);
  border-radius: var(--radius-md);
  padding: var(--spacing-md);
  margin-bottom: var(--spacing-md);
  max-height: 200px;
  overflow-y: auto;
}

.contraction-item {
  display: flex;
  justify-content: space-between;
  padding: var(--spacing-sm) 0;
  border-bottom: 1px solid var(--accent);
}

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

.contraction-time {
  font-weight: 600;
  color: var(--primary);
}

.contraction-duration {
  color: var(--text-secondary);
}

.analysis-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-md);
}

.analysis-item {
  background: var(--background);
  padding: var(--spacing-md);
  border-radius: var(--radius-md);
  text-align: center;
}

.analysis-item.highlight {
  background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
  color: white;
}

.analysis-label {
  font-size: 0.75rem;
  opacity: 0.8;
  text-transform: uppercase;
}

.analysis-value {
  font-size: 1.2rem;
  font-weight: 700;
  margin-top: var(--spacing-xs);
}

/* Movement Counter */
.movement-counter {
  text-align: center;
  padding: var(--spacing-lg);
}

.movement-display {
  background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
  border-radius: var(--radius-xl);
  padding: var(--spacing-xl);
  margin-bottom: var(--spacing-lg);
  color: white;
}

.movement-count {
  font-size: 4rem;
  font-weight: 700;
  line-height: 1;
}

.movement-timer {
  font-size: 1.2rem;
  margin-top: var(--spacing-md);
  opacity: 0.9;
}

/* Text Utilities */
.text-muted {
  color: var(--text-secondary);
  font-style: italic;
}

.text-success {
  color: var(--success);
  font-weight: 600;
}

.text-warning {
  color: var(--warning);
  font-weight: 600;
}

.text-danger {
  color: var(--danger);
  font-weight: 600;
}

/* Notifications */
.notification {
  position: fixed;
  bottom: 100px;
  left: 50%;
  transform: translateX(-50%) translateY(100px);
  background: var(--text-primary);
  color: white;
  padding: var(--spacing-md) var(--spacing-lg);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  z-index: 1000;
  opacity: 0;
  transition: var(--transition);
  max-width: 90%;
  text-align: center;
}

.notification.show {
  transform: translateX(-50%) translateY(0);
  opacity: 1;
}

.notification-success {
  background: var(--success);
}

.notification-error {
  background: var(--danger);
}

.notification-info {
  background: var(--primary);
}

/* Bottom Action Bar */
.bottom-bar {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background: var(--surface);
  padding: var(--spacing-md);
  display: flex;
  gap: var(--spacing-sm);
  box-shadow: 0 -2px 10px rgba(0, 0, 0, 0.1);
  z-index: 100;
}

.bottom-bar .btn {
  flex: 1;
  padding: var(--spacing-sm) var(--spacing-md);
  font-size: 0.85rem;
}

/* Section Titles */
.section-title {
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: var(--spacing-lg);
  text-align: center;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
}

/* Info Cards */
.info-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: var(--spacing-md);
  margin-top: var(--spacing-md);
}

.info-item {
  background: var(--surface);
  padding: var(--spacing-md);
  border-radius: var(--radius-md);
  text-align: center;
  box-shadow: var(--shadow-sm);
}

.info-item .icon {
  font-size: 2rem;
  margin-bottom: var(--spacing-sm);
}

.info-item .label {
  font-size: 0.8rem;
  color: var(--text-secondary);
}

.info-item .value {
  font-weight: 600;
  color: var(--primary);
}

/* Progress Bar */
.progress-container {
  background: var(--accent);
  border-radius: var(--radius-lg);
  height: 20px;
  margin: var(--spacing-md) 0;
  overflow: hidden;
}

.progress-bar {
  height: 100%;
  background: linear-gradient(90deg, var(--primary) 0%, var(--secondary) 100%);
  border-radius: var(--radius-lg);
  transition: width 0.5s ease;
}

/* Responsive */
@media (max-width: 480px) {
  .header h1 {
    font-size: 1.1rem;
  }

  .nav-tab {
    font-size: 0.8rem;
    padding: var(--spacing-sm);
  }

  .btn-contraction {
    width: 120px;
    height: 120px;
    font-size: 1rem;
  }

  .movement-count {
    font-size: 3rem;
  }

  .result-value {
    font-size: 1.2rem;
  }
}

/* Print Styles */
@media print {
  .header, .nav-tabs, .bottom-bar, .btn {
    display: none;
  }

  .calculator-section {
    display: block;
    page-break-inside: avoid;
  }

  .card {
    box-shadow: none;
    border: 1px solid #ddd;
  }
}

/* Dark Mode Support */
@media (prefers-color-scheme: dark) {
  :root {
    --background: #1a1a2e;
    --surface: #16213e;
    --text-primary: #e8e8e8;
    --text-secondary: #a0a0a0;
    --accent: #4a2c3a;
  }

  body {
    background: linear-gradient(135deg, #1a1a2e 0%, #2d1f3d 100%);
  }

  .result-card {
    background: linear-gradient(135deg, var(--surface) 0%, #2d1f3d 100%);
  }

  .preg-summary__emoji {
    background: linear-gradient(145deg, var(--surface) 0%, #2d1f3d 100%);
  }

  .preg-summary__disclaimer {
    color: var(--text-secondary);
  }
}

/* Accessibility */
@media (prefers-reduced-motion: reduce) {
  * {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

/* Focus Visible */
.btn:focus-visible,
input:focus-visible,
select:focus-visible {
  outline: 3px solid var(--primary);
  outline-offset: 2px;
}

/* Language switcher & 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;
}

.header-top {
  display: flex;
  justify-content: flex-end;
  margin-bottom: 0.2rem;
}

.lang-select {
  font-size: 0.75rem;
  padding: 0.15rem 0.4rem;
  border-radius: var(--radius-sm);
  border: 1px solid rgba(255, 255, 255, 0.5);
  background: rgba(255, 255, 255, 0.15);
  color: white;
  cursor: pointer;
}

.lang-select option {
  color: var(--text-primary);
  background: var(--surface);
}

.contr-how-list,
.kick-guidelines-list {
  padding-inline-start: 1.5rem;
  line-height: 2;
}

.contr-hospital-note {
  margin-top: 1rem;
  padding: 1rem;
  background: var(--background);
  border-radius: var(--radius-md);
}

/* RTL (Arabic) */
html[dir="rtl"] body {
  font-family: 'Segoe UI', Tahoma, 'Noto Sans Arabic', 'Arabic UI Text', sans-serif;
}

html[dir="rtl"] .header-top {
  justify-content: flex-start;
}

html[dir="rtl"] .nav-tabs {
  flex-direction: row-reverse;
}

html[dir="rtl"] .bottom-bar {
  flex-direction: row-reverse;
}

html[dir="rtl"] .header h1 {
  flex-direction: row-reverse;
}

html[dir="rtl"] .contraction-item {
  flex-direction: row-reverse;
}

html[dir="rtl"] .analysis-grid {
  direction: rtl;
}

html[dir="rtl"] .movement-display {
  direction: rtl;
}