/* ==========================================================================
   Rotary Event Registration - Modern Mobile-First Stylesheet
   Theme: Rotary Navy (#002244), Rotary Gold (#F7A81B), Clean Slate (#F8FAFC)
   ========================================================================== */

:root {
  --rotary-navy: #002244;
  --rotary-navy-light: #0C3668;
  --rotary-navy-dark: #00152B;
  --rotary-gold: #F7A81B;
  --rotary-gold-hover: #E09510;
  --rotary-gold-light: #FFF7E6;
  
  --bg-main: #F4F6F9;
  --card-bg: #FFFFFF;
  --text-main: #1E293B;
  --text-muted: #64748B;
  --text-light: #94A3B8;
  
  --border-color: #E2E8F0;
  --border-focus: #002244;
  
  --success-color: #059669;
  --success-bg: #ECFDF5;
  --danger-color: #DC2626;
  --danger-bg: #FEF2F2;
  --warning-color: #D97706;
  --warning-bg: #FFFBEB;
  
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.08);
  --shadow-md: 0 4px 14px rgba(0, 34, 68, 0.08);
  --shadow-lg: 0 10px 25px rgba(0, 34, 68, 0.12);
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 16px;
  
  --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

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

body {
  font-family: var(--font-family);
  background-color: var(--bg-main);
  color: var(--text-main);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  padding-bottom: 40px;
}

/* Container */
.container {
  width: 100%;
  max-width: 680px;
  margin: 0 auto;
  padding: 16px;
}

.header-card {
  background: transparent;
  border-radius: var(--radius-lg);
  margin-bottom: 20px;
  box-shadow: var(--shadow-md);
  overflow: hidden;
  line-height: 0;
  border: 1px solid var(--border-color);
}

.header-banner-img {
  width: 100%;
  height: auto;
  display: block;
  object-fit: contain;
  border-radius: var(--radius-lg);
}

/* Form Card */
.form-card {
  background: var(--card-bg);
  border-radius: var(--radius-lg);
  padding: 24px;
  box-shadow: var(--shadow-md);
  border: 1px solid var(--border-color);
  margin-bottom: 20px;
  content-visibility: auto;
  contain-intrinsic-size: 300px;
}

.section-title {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 17px;
  font-weight: 700;
  color: var(--rotary-navy);
  margin-bottom: 18px;
  padding-bottom: 10px;
  border-bottom: 2px solid #EDF2F7;
}

.step-num {
  width: 26px;
  height: 26px;
  background-color: var(--rotary-navy);
  color: #FFFFFF;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  font-weight: 700;
}

/* Form Groups & Inputs */
.form-group {
  margin-bottom: 18px;
}

.form-group:last-child {
  margin-bottom: 0;
}

.form-label {
  display: block;
  font-size: 14px;
  font-weight: 600;
  color: var(--text-main);
  margin-bottom: 6px;
}

.form-label .req {
  color: var(--danger-color);
  margin-left: 2px;
}

.form-label .optional {
  font-weight: normal;
  color: var(--text-muted);
  font-size: 12px;
}

.form-control {
  width: 100%;
  height: 48px;
  padding: 10px 14px;
  font-size: 15px;
  color: var(--text-main);
  background-color: #FFFFFF;
  border: 1.5px solid var(--border-color);
  border-radius: var(--radius-sm);
  transition: border-color 0.2s, box-shadow 0.2s;
  outline: none;
}

.form-control:focus {
  border-color: var(--rotary-navy);
  box-shadow: 0 0 0 3px rgba(0, 34, 68, 0.12);
}

.form-control.is-invalid {
  border-color: var(--danger-color);
  background-color: #FFFBFB;
}

.form-control.is-valid {
  border-color: var(--success-color);
}

.input-hint {
  font-size: 12px;
  color: var(--text-muted);
  margin-top: 5px;
  line-height: 1.4;
}

.error-feedback {
  font-size: 12.5px;
  color: var(--danger-color);
  margin-top: 4px;
  font-weight: 500;
  display: none;
}

.is-invalid + .error-feedback,
.has-error .error-feedback {
  display: block;
}

/* Grid layout for two columns on tablets/desktop */
.form-row {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}

@media (min-width: 580px) {
  .form-row.two-col {
    grid-template-columns: 1fr 1fr;
  }
}

/* Rotary Number Picker / Stepper */
.rotarian-select-box {
  background-color: #F8FAFC;
  border: 1.5px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 16px;
  text-align: center;
}

.rate-tag {
  display: inline-block;
  background-color: var(--rotary-gold-light);
  color: #8D5B00;
  font-weight: 700;
  font-size: 13px;
  padding: 4px 10px;
  border-radius: 20px;
  margin-bottom: 12px;
  border: 1px solid rgba(247, 168, 27, 0.4);
}

.stepper-container {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  margin-top: 6px;
}

.stepper-btn {
  width: 44px;
  height: 44px;
  background-color: #FFFFFF;
  border: 1.5px solid var(--border-color);
  border-radius: var(--radius-sm);
  font-size: 22px;
  font-weight: 700;
  color: var(--rotary-navy);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.15s ease;
  user-select: none;
}

.stepper-btn:hover:not(:disabled) {
  background-color: var(--rotary-navy);
  color: #FFFFFF;
  border-color: var(--rotary-navy);
}

.stepper-btn:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

.stepper-input {
  width: 80px;
  height: 44px;
  text-align: center;
  font-size: 20px;
  font-weight: 700;
  color: var(--rotary-navy);
  border: 1.5px solid var(--border-color);
  border-radius: var(--radius-sm);
  outline: none;
  background: #FFFFFF;
}

.stepper-input:focus {
  border-color: var(--rotary-navy);
}

/* Registration Summary Card */
.summary-card {
  background: linear-gradient(135deg, #F8FAFC 0%, #EDF2F7 100%);
  border: 2px solid #CBD5E1;
  border-radius: var(--radius-md);
  padding: 18px 20px;
  margin: 18px 0;
}

.summary-header {
  font-size: 13px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.8px;
  color: var(--text-muted);
  margin-bottom: 12px;
}

.summary-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 14.5px;
  margin-bottom: 8px;
  color: var(--text-main);
}

.summary-row.total-row {
  margin-top: 12px;
  padding-top: 12px;
  border-top: 2px dashed #CBD5E1;
  font-size: 18px;
  font-weight: 800;
  color: var(--rotary-navy);
}

.total-amount-display {
  font-size: 24px;
  font-weight: 900;
  color: var(--rotary-navy);
}

/* Payment Card & QR */
.payment-box {
  background-color: #FFFFFF;
  border-radius: var(--radius-md);
  text-align: center;
}

.amount-hero {
  background: var(--rotary-gold-light);
  border: 1px solid rgba(247, 168, 27, 0.4);
  border-radius: var(--radius-md);
  padding: 16px;
  margin-bottom: 20px;
}

.amount-hero .label {
  font-size: 13px;
  font-weight: 600;
  color: #784C00;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.amount-hero .amount {
  font-size: 32px;
  font-weight: 900;
  color: var(--rotary-navy);
  margin-top: 4px;
}

/* QR Code Display & Instructions */
.qr-instructions-banner {
  background-color: #F0F7FF;
  border-left: 4px solid #002244;
  border-radius: var(--radius-sm);
  padding: 12px 16px;
  margin: 14px 0 16px 0;
  text-align: center;
}

.qr-primary-instruction {
  font-size: 14.5px;
  font-weight: 700;
  color: #002244;
  margin: 0;
  line-height: 1.4;
}

.qr-secondary-instruction {
  font-size: 12px;
  color: #64748B;
  margin: 5px 0 0 0;
  line-height: 1.4;
}

.qr-display-container {
  display: flex;
  justify-content: center;
  align-items: center;
  margin: 10px 0 16px 0;
}

.qr-frame {
  display: inline-block;
  background-color: #FFFFFF;
  padding: 18px;
  border-radius: var(--radius-md);
  box-shadow: 0 4px 12px rgba(0, 34, 68, 0.08);
  border: 1.5px solid #E2E8F0;
  text-align: center;
  user-select: none;
  -webkit-user-select: none;
}

#qrcode-container {
  display: flex;
  align-items: center;
  justify-content: center;
  min-width: 200px;
  min-height: 200px;
}

#qrcode-container canvas,
#qrcode-container img {
  display: block;
  max-width: 100%;
  height: auto;
  border-radius: 4px;
}

.qr-caption {
  font-size: 12.5px;
  color: var(--text-muted);
  margin-top: 8px;
}

/* UPI ID Copy Bar */
.upi-copy-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: #F1F5F9;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  padding: 10px 14px;
  margin-bottom: 16px;
  max-width: 380px;
  margin-left: auto;
  margin-right: auto;
}

.upi-id-text {
  font-family: monospace;
  font-size: 14px;
  font-weight: 700;
  color: var(--rotary-navy);
  overflow: hidden;
  text-overflow: ellipsis;
}

.copy-btn {
  background: #FFFFFF;
  border: 1px solid var(--border-color);
  border-radius: 4px;
  font-size: 12px;
  font-weight: 600;
  color: var(--rotary-navy);
  padding: 4px 10px;
  cursor: pointer;
  transition: background 0.15s;
}

.copy-btn:hover {
  background: var(--rotary-navy);
  color: #FFFFFF;
}

/* Mobile Pay Button */
.btn-upi-pay {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  width: 100%;
  max-width: 380px;
  padding: 14px 20px;
  background-color: var(--rotary-navy);
  color: #FFFFFF;
  text-decoration: none;
  font-size: 16px;
  font-weight: 700;
  border-radius: var(--radius-sm);
  box-shadow: 0 4px 12px rgba(0, 34, 68, 0.2);
  transition: all 0.2s;
  margin-bottom: 16px;
}

.btn-upi-pay:hover {
  background-color: var(--rotary-navy-light);
  transform: translateY(-1px);
}

/* Quick App Chips for Mobile */
.upi-app-options {
  margin-bottom: 16px;
  max-width: 380px;
  margin-left: auto;
  margin-right: auto;
  text-align: center;
}

.upi-app-label {
  display: block;
  font-size: 12px;
  font-weight: 600;
  color: var(--text-muted);
  margin-bottom: 8px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.upi-app-grid {
  display: flex;
  justify-content: center;
  gap: 8px;
  flex-wrap: wrap;
}

.btn-app-chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 14px;
  background: #FFFFFF;
  border: 1px solid var(--border-color);
  border-radius: 20px;
  color: var(--text-dark);
  font-size: 13px;
  font-weight: 600;
  text-decoration: none;
  box-shadow: 0 1px 3px rgba(0,0,0,0.06);
  transition: all 0.15s ease;
}

.btn-app-chip:hover {
  border-color: var(--rotary-navy);
  transform: translateY(-1px);
  box-shadow: 0 2px 6px rgba(0,0,0,0.1);
}

.app-chip-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  font-size: 10px;
  font-weight: 800;
  color: #FFFFFF;
}

.btn-gpay .app-chip-icon {
  background: #1A73E8;
}

.btn-phonepe .app-chip-icon {
  background: #5F259F;
}

.btn-paytm .app-chip-icon {
  background: #00BAF2;
}

/* Helpful UPI Fallback Card */
.upi-help-note {
  max-width: 380px;
  margin: 12px auto 0 auto;
  padding: 12px 14px;
  background: #F8FAFC;
  border: 1px solid #E2E8F0;
  border-left: 3px solid #002244;
  border-radius: var(--radius-sm);
  text-align: left;
}

.help-header {
  display: flex;
  align-items: center;
  font-size: 12px;
  font-weight: 700;
  color: #002244;
  margin-bottom: 6px;
}

.help-steps {
  margin: 0;
  padding-left: 18px;
  font-size: 11.5px;
  color: #475569;
  line-height: 1.5;
}

.help-steps li {
  margin-bottom: 4px;
}

.help-steps code {
  background: #E2E8F0;
  padding: 1px 4px;
  border-radius: 3px;
  font-weight: 600;
  color: #002244;
}

/* Diagnostic Alert */
.payment-config-alert {
  background: #FEF2F2;
  border: 1px solid #F87171;
  color: #991B1B;
  padding: 10px 14px;
  border-radius: var(--radius-sm);
  font-size: 13px;
  margin-bottom: 12px;
  text-align: center;
}

/* File Upload Preview */
.file-upload-box {
  position: relative;
  border: 2px dashed var(--border-color);
  border-radius: var(--radius-md);
  padding: 16px;
  text-align: center;
  background-color: #FAFAFA;
  cursor: pointer;
  transition: border-color 0.2s;
}

.file-upload-box:hover {
  border-color: var(--rotary-navy);
}

.file-upload-input {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  opacity: 0;
  cursor: pointer;
}

.file-preview {
  display: none;
  margin-top: 10px;
  max-height: 120px;
  object-fit: contain;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-color);
}

/* Primary Submit Button */
.btn-submit {
  width: 100%;
  height: 52px;
  background-color: var(--rotary-gold);
  color: var(--rotary-navy-dark);
  border: none;
  border-radius: var(--radius-md);
  font-size: 17px;
  font-weight: 800;
  cursor: pointer;
  box-shadow: 0 4px 14px rgba(247, 168, 27, 0.35);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  transition: all 0.2s;
  margin-top: 8px;
}

.btn-submit:hover:not(:disabled) {
  background-color: var(--rotary-gold-hover);
  transform: translateY(-1px);
}

.btn-submit:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  transform: none;
}

/* Spinner */
.spinner {
  width: 20px;
  height: 20px;
  border: 3px solid rgba(0, 34, 68, 0.2);
  border-top-color: var(--rotary-navy);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
  display: none;
}

.loading .spinner {
  display: block;
}

.loading .btn-text {
  display: inline;
}

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

/* Success Card */
.success-screen {
  display: none;
  background: #FFFFFF;
  border-radius: var(--radius-lg);
  padding: 32px 24px;
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--border-color);
  text-align: center;
}

.success-icon-badge {
  width: 64px;
  height: 64px;
  background-color: var(--success-bg);
  color: var(--success-color);
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 32px;
  margin-bottom: 16px;
}

.registration-id-badge {
  display: inline-block;
  background: var(--rotary-navy);
  color: #FFFFFF;
  font-family: monospace;
  font-size: 20px;
  font-weight: 800;
  padding: 8px 18px;
  border-radius: var(--radius-sm);
  letter-spacing: 1px;
  margin: 12px 0 18px 0;
  border: 2px solid var(--rotary-gold);
}

.receipt-table {
  width: 100%;
  border-collapse: collapse;
  margin: 20px 0;
  text-align: left;
}

.receipt-table th,
.receipt-table td {
  padding: 10px 14px;
  border-bottom: 1px solid var(--border-color);
  font-size: 14px;
}

.receipt-table th {
  color: var(--text-muted);
  width: 45%;
  font-weight: 600;
}

.receipt-table td {
  font-weight: 600;
  color: var(--rotary-navy);
}

.receipt-actions {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-top: 24px;
}

@media (min-width: 480px) {
  .receipt-actions {
    flex-direction: row;
    justify-content: center;
  }
}

.btn-receipt {
  padding: 12px 20px;
  border-radius: var(--radius-sm);
  font-size: 15px;
  font-weight: 700;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  text-decoration: none;
}

.btn-print {
  background-color: var(--rotary-navy);
  color: #FFFFFF;
  border: none;
}

.btn-new {
  background-color: #F1F5F9;
  color: var(--text-main);
  border: 1px solid var(--border-color);
}

/* Alert Notification Banner */
.alert-banner {
  padding: 12px 16px;
  border-radius: var(--radius-sm);
  font-size: 14px;
  margin-bottom: 16px;
  display: none;
}

.alert-banner.alert-danger {
  background-color: var(--danger-bg);
  color: var(--danger-color);
  border: 1px solid #FECACA;
  display: block;
}

.alert-banner.alert-success {
  background-color: var(--success-bg);
  color: var(--success-color);
  border: 1px solid #A7F3D0;
  display: block;
}

/* Footer & Admin Link */
.page-footer {
  text-align: center;
  font-size: 13px;
  color: var(--text-muted);
  margin-top: 24px;
}

.admin-link {
  color: var(--rotary-navy);
  text-decoration: none;
  font-weight: 600;
}

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

.btn-admin-login {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 6px 14px;
  font-size: 12px;
  font-weight: 600;
  color: var(--rotary-navy);
  background: #FFFFFF;
  border: 1px solid var(--border-color);
  border-radius: 6px;
  text-decoration: none;
  cursor: pointer;
  transition: all 0.2s ease;
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.04);
}

.btn-admin-login:hover {
  background: var(--rotary-navy);
  color: #FFFFFF;
  border-color: var(--rotary-navy);
  text-decoration: none;
  box-shadow: 0 2px 6px rgba(0, 34, 68, 0.15);
}

/* Print Stylesheet for Receipts */
@media print {
  body {
    background: #FFFFFF;
    color: #000000;
    padding: 0;
  }
  .header-card::before,
  .receipt-actions,
  .page-footer,
  #registration-form-section {
    display: none !important;
  }
  .container {
    max-width: 100%;
    padding: 0;
  }
  .success-screen {
    box-shadow: none;
    border: 2px solid #002244;
    padding: 20px;
    display: block !important;
  }
  .registration-id-badge {
    background: #FFFFFF !important;
    color: #002244 !important;
    border: 2px solid #002244 !important;
  }
}