/* ===================================
   Tija Scanner - Mobile-First Styles
   =================================== */

/* CSS Variables */
:root {
  --primary-color: #6366f1;
  --primary-hover: #4f46e5;
  --secondary-color: #64748b;
  --success-color: #10b981;
  --error-color: #ef4444;
  --warning-color: #f59e0b;
  
  --text-primary: #1e293b;
  --text-secondary: #64748b;
  --text-light: #94a3b8;
  
  --bg-primary: #ffffff;
  --bg-secondary: #f8fafc;
  --bg-card: #ffffff;
  
  --border-color: #e2e8f0;
  --border-radius: 12px;
  --border-radius-small: 8px;
  
  --shadow-small: 0 1px 3px rgba(0, 0, 0, 0.1);
  --shadow-medium: 0 4px 6px rgba(0, 0, 0, 0.1);
  --shadow-large: 0 10px 15px rgba(0, 0, 0, 0.1);
  
  --spacing-xs: 8px;
  --spacing-sm: 12px;
  --spacing-md: 16px;
  --spacing-lg: 24px;
  --spacing-xl: 32px;
  
  --font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
}

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

html {
  font-size: 16px; /* Base font size for accessibility */
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-family);
  font-size: 16px;
  line-height: 1.5;
  color: var(--text-primary);
  background-color: var(--bg-secondary);
  min-height: 100vh;
}

/* Container */
.container {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* Header */
.header {
  background-color: var(--bg-primary);
  padding: var(--spacing-md);
  box-shadow: var(--shadow-small);
  text-align: center;
}

.header-with-actions {
  display: flex;
  justify-content: space-between;
  align-items: center;
  text-align: left;
}

.header-left {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.header-right {
  display: flex;
  gap: var(--spacing-sm);
}

.logo {
  height: 32px;
  width: auto;
}

.header h1 {
  font-size: 20px;
  font-weight: 600;
  color: var(--text-primary);
}

/* Main Content */
.main-content {
  flex: 1;
  padding: var(--spacing-lg);
  max-width: 600px;
  width: 100%;
  margin: 0 auto;
}

/* Card */
.card {
  background-color: var(--bg-card);
  border-radius: var(--border-radius);
  padding: var(--spacing-lg);
  box-shadow: var(--shadow-medium);
}

.card h2 {
  font-size: 24px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: var(--spacing-sm);
}

.subtitle {
  font-size: 14px;
  color: var(--text-secondary);
  margin-bottom: var(--spacing-lg);
}

/* Form Styles */
.form {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xs);
}

.form-label {
  font-size: 14px;
  font-weight: 500;
  color: var(--text-primary);
}

.form-input {
  width: 100%;
  min-height: 44px; /* Touch target minimum */
  padding: var(--spacing-sm) var(--spacing-md);
  font-size: 16px; /* Prevents zoom on iOS */
  border: 2px solid var(--border-color);
  border-radius: var(--border-radius-small);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  transition: border-color 0.2s;
}

.form-input:focus {
  outline: none;
  border-color: var(--primary-color);
}

.form-input::placeholder {
  color: var(--text-light);
}

.form-input:invalid {
  border-color: var(--error-color);
}

/* Password Input Wrapper */
.password-input-wrapper {
  position: relative;
  display: flex;
  align-items: center;
}

.password-input-wrapper .form-input {
  padding-right: 48px; /* Space for toggle button */
}

.password-toggle {
  position: absolute;
  right: 0;
  min-width: 44px;
  min-height: 44px;
  background: none;
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-secondary);
  transition: color 0.2s;
}

.password-toggle:hover {
  color: var(--text-primary);
}

.toggle-icon {
  font-size: 20px;
}

/* Password Requirements */
.password-requirements {
  background-color: var(--bg-secondary);
  border-radius: var(--border-radius-small);
  padding: var(--spacing-md);
}

.requirements-title {
  font-size: 14px;
  font-weight: 500;
  color: var(--text-primary);
  margin-bottom: var(--spacing-sm);
}

.requirements-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xs);
}

.requirement {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  font-size: 14px;
  color: var(--text-secondary);
}

.requirement-icon {
  font-size: 16px;
  width: 20px;
  text-align: center;
}

.requirement.met {
  color: var(--success-color);
}

.requirement.met .requirement-icon::before {
  content: '✓';
}

/* Buttons */
.btn {
  min-width: 44px;
  min-height: 44px;
  padding: var(--spacing-sm) var(--spacing-lg);
  font-size: 16px;
  font-weight: 500;
  border: none;
  border-radius: var(--border-radius-small);
  cursor: pointer;
  transition: all 0.2s;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-xs);
  text-decoration: none;
  text-align: center;
}

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

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

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

.btn-secondary:hover:not(:disabled) {
  background-color: #475569;
}

.btn-small {
  min-height: 36px;
  padding: var(--spacing-xs) var(--spacing-md);
  font-size: 14px;
}

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

.btn-spinner {
  width: 16px;
  height: 16px;
  border: 2px solid rgba(255, 255, 255, 0.3);
  border-top-color: white;
  border-radius: 50%;
  animation: spin 0.6s linear infinite;
}

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

/* Error Message */
.error-message {
  padding: var(--spacing-sm);
  background-color: #fee;
  border: 1px solid var(--error-color);
  border-radius: var(--border-radius-small);
  color: var(--error-color);
  font-size: 14px;
  display: none;
}

.error-message.show {
  display: block;
}

/* Link Section */
.link-section {
  text-align: center;
  margin-top: var(--spacing-lg);
  font-size: 14px;
  color: var(--text-secondary);
}

.link {
  color: var(--primary-color);
  text-decoration: none;
  font-weight: 500;
}

.link:hover {
  text-decoration: underline;
}

/* Divider */
.divider {
  display: flex;
  align-items: center;
  text-align: center;
  margin: var(--spacing-lg) 0;
  color: var(--text-light);
  font-size: 14px;
}

.divider::before,
.divider::after {
  content: '';
  flex: 1;
  border-bottom: 1px solid var(--border-color);
}

.divider span {
  padding: 0 var(--spacing-md);
}

/* Loading State */
.loading-state {
  text-align: center;
  padding: var(--spacing-xl);
}

.spinner {
  width: 48px;
  height: 48px;
  border: 4px solid var(--border-color);
  border-top-color: var(--primary-color);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
  margin: 0 auto var(--spacing-md);
}

/* Empty State */
.empty-state {
  text-align: center;
  padding: var(--spacing-xl);
}

.empty-icon {
  font-size: 64px;
  margin-bottom: var(--spacing-md);
}

.empty-state h2 {
  font-size: 20px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: var(--spacing-sm);
}

.empty-state p {
  font-size: 14px;
  color: var(--text-secondary);
}

/* Error State */
.error-state {
  text-align: center;
  padding: var(--spacing-xl);
}

.error-icon {
  font-size: 64px;
  margin-bottom: var(--spacing-md);
}

.error-state h2 {
  font-size: 20px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: var(--spacing-sm);
}

.error-state p {
  font-size: 14px;
  color: var(--text-secondary);
  margin-bottom: var(--spacing-lg);
}

/* Campaigns List */
.campaigns-list {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

.campaign-card {
  background-color: var(--bg-card);
  border-radius: var(--border-radius);
  padding: var(--spacing-lg);
  box-shadow: var(--shadow-small);
  border: 2px solid var(--border-color);
  transition: all 0.2s;
}

.campaign-card:hover {
  box-shadow: var(--shadow-medium);
  border-color: var(--primary-color);
}

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

.campaign-icon {
  font-size: 32px;
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: var(--bg-secondary);
  border-radius: var(--border-radius-small);
}

.campaign-info {
  flex: 1;
}

.campaign-name {
  font-size: 18px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 4px;
}

.campaign-description {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.4;
}

.campaign-actions {
  display: flex;
  gap: var(--spacing-sm);
  margin-top: var(--spacing-md);
}

/* Footer */
.footer {
  background-color: var(--bg-primary);
  padding: var(--spacing-md);
  text-align: center;
  border-top: 1px solid var(--border-color);
  font-size: 14px;
  color: var(--text-secondary);
}

/* Tablet Styles (768px+) */
@media (min-width: 768px) {
  .header h1 {
    font-size: 24px;
  }
  
  .main-content {
    padding: var(--spacing-xl);
  }
  
  .card {
    padding: var(--spacing-xl);
  }
  
  .card h2 {
    font-size: 28px;
  }
  
  .campaigns-list {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-lg);
  }
}

/* Desktop Styles (1024px+) */
@media (min-width: 1024px) {
  .main-content {
    max-width: 900px;
  }
  
  .campaigns-list {
    grid-template-columns: repeat(2, 1fr);
  }
}

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

/* Focus Styles */
*:focus-visible {
  outline: 2px solid var(--primary-color);
  outline-offset: 2px;
}

/* Scanner Page Styles */
.scanner-content {
  padding: 0;
  max-width: 100%;
}

.camera-view {
  position: relative;
  width: 100%;
  height: 70vh;
  background-color: #000;
  overflow: hidden;
}

.video-preview {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.scanning-overlay {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  pointer-events: none;
}

.scan-frame {
  position: relative;
  width: 250px;
  height: 250px;
  border: 2px solid rgba(255, 255, 255, 0.5);
}

.corner {
  position: absolute;
  width: 30px;
  height: 30px;
  border: 3px solid var(--primary-color);
}

.corner-tl {
  top: -2px;
  left: -2px;
  border-right: none;
  border-bottom: none;
}

.corner-tr {
  top: -2px;
  right: -2px;
  border-left: none;
  border-bottom: none;
}

.corner-bl {
  bottom: -2px;
  left: -2px;
  border-right: none;
  border-top: none;
}

.corner-br {
  bottom: -2px;
  right: -2px;
  border-left: none;
  border-top: none;
}

.scan-instruction {
  margin-top: var(--spacing-lg);
  color: white;
  font-size: 16px;
  font-weight: 500;
  text-shadow: 0 2px 4px rgba(0, 0, 0, 0.5);
}

.permission-instructions {
  background-color: var(--bg-secondary);
  border-radius: var(--border-radius-small);
  padding: var(--spacing-md);
  margin: var(--spacing-lg) 0;
  text-align: left;
}

.permission-instructions h3 {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: var(--spacing-sm);
}

.permission-instructions ul {
  list-style: none;
  padding: 0;
}

.permission-instructions li {
  padding: var(--spacing-xs) 0;
  font-size: 14px;
}

.scan-message {
  position: fixed;
  top: 80px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 1000;
  max-width: 90%;
  animation: slideDown 0.3s ease-out;
}

@keyframes slideDown {
  from {
    opacity: 0;
    transform: translateX(-50%) translateY(-20px);
  }
  to {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
  }
}

.message-content {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-md) var(--spacing-lg);
  background-color: white;
  border-radius: var(--border-radius-small);
  box-shadow: var(--shadow-large);
  border-left: 4px solid var(--success-color);
}

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

.message-icon {
  font-size: 24px;
}

.message-text {
  font-size: 14px;
  font-weight: 500;
}

/* Modal Styles */
.modal {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: rgba(0, 0, 0, 0.5);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 2000;
  padding: var(--spacing-md);
  animation: fadeIn 0.2s ease-out;
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

.modal-content {
  background-color: var(--bg-card);
  border-radius: var(--border-radius);
  max-width: 500px;
  width: 100%;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: var(--shadow-large);
  animation: slideUp 0.3s ease-out;
}

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

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

.modal-header h2 {
  font-size: 20px;
  font-weight: 600;
  margin: 0;
}

.modal-close {
  background: none;
  border: none;
  font-size: 28px;
  color: var(--text-secondary);
  cursor: pointer;
  padding: 0;
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 4px;
  transition: background-color 0.2s;
}

.modal-close:hover {
  background-color: var(--bg-secondary);
}

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

.child-info {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  padding: var(--spacing-md);
  background-color: var(--bg-secondary);
  border-radius: var(--border-radius-small);
  margin-bottom: var(--spacing-lg);
}

.child-avatar {
  width: 48px;
  height: 48px;
  background-color: var(--primary-color);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
}

.child-name {
  font-size: 18px;
  font-weight: 600;
  color: var(--text-primary);
  margin: 0;
}

.campaign-name-small {
  font-size: 14px;
  color: var(--text-secondary);
  margin: 0;
}

.input-hint {
  font-size: 12px;
  color: var(--text-secondary);
  margin-top: var(--spacing-xs);
}

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

.modal-footer .btn {
  flex: 1;
}

/* History Page Styles */
.history-list {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.history-item {
  background-color: var(--bg-card);
  border-radius: var(--border-radius-small);
  padding: var(--spacing-md);
  border: 1px solid var(--border-color);
}

.history-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: var(--spacing-xs);
}

.history-child-name {
  font-size: 16px;
  font-weight: 600;
  color: var(--text-primary);
}

.history-points {
  font-size: 18px;
  font-weight: 700;
  color: var(--success-color);
}

.history-details {
  font-size: 14px;
  color: var(--text-secondary);
}

.history-campaign {
  margin-bottom: 4px;
}

.history-timestamp {
  font-size: 12px;
  color: var(--text-light);
}

/* Print Styles */
@media print {
  .header,
  .footer,
  .btn {
    display: none;
  }
}