/* ===== Google Fonts ===== */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&display=swap');

/* ===== CSS Variables ===== */
:root {
  --primary: #2563EB;
  --primary-dark: #1D4ED8;
  --primary-light: #60A5FA;
  --accent: #10B981;
  --accent-dark: #059669;
  --bg-dark: #F3F4F6;
  --bg-card: #FFFFFF;
  --bg-card-hover: #F9FAFB;
  --bg-input: #FFFFFF;
  --text-primary: #111827;
  --text-secondary: #4B5563;
  --text-muted: #6B7280;
  --border: #E5E7EB;
  --border-focus: #2563EB;
  --success: #10B981;
  --success-bg: rgba(16, 185, 129, 0.1);
  --warning: #F59E0B;
  --warning-bg: rgba(245, 158, 11, 0.1);
  --danger: #EF4444;
  --danger-bg: rgba(239, 68, 68, 0.1);
  --gradient-primary: linear-gradient(135deg, #2563EB 0%, #60A5FA 100%);
  --gradient-dark: linear-gradient(135deg, #F3F4F6 0%, #FFFFFF 100%);
  --gradient-accent: linear-gradient(135deg, #00CEC9 0%, #55EFC4 100%);
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.2);
  --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.3);
  --shadow-lg: 0 8px 40px rgba(0, 0, 0, 0.4);
  --shadow-glow: 0 0 20px rgba(108, 92, 231, 0.3);
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  background: var(--bg-dark);
  color: var(--text-primary);
  min-height: 100vh;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

/* ===== App Container ===== */
.app-container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 20px;
}

/* ===== Header ===== */
.header {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 20px 28px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 20px;
  backdrop-filter: blur(10px);
}

.header-left {
  display: flex;
  align-items: center;
  gap: 16px;
}

.header-logo {
  font-size: 28px;
  line-height: 1;
}

.header h1 {
  font-size: 20px;
  font-weight: 700;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  letter-spacing: -0.5px;
}

.header h1 span {
  font-weight: 400;
  color: var(--text-secondary);
  -webkit-text-fill-color: var(--text-secondary);
}

.ref-badge {
  background: var(--bg-input);
  border: 1px solid var(--border);
  padding: 8px 16px;
  border-radius: var(--radius-sm);
  font-size: 13px;
  font-weight: 600;
  color: var(--primary-light);
  font-family: 'JetBrains Mono', monospace;
}

/* ===== Status Bar ===== */
.status-bar {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 16px;
  background: var(--success-bg);
  border: 1px solid rgba(0, 184, 148, 0.2);
  border-radius: var(--radius-sm);
  margin-bottom: 20px;
  font-size: 13px;
  color: var(--success);
  transition: var(--transition);
}

.status-bar.error {
  background: var(--danger-bg);
  border-color: rgba(255, 107, 107, 0.2);
  color: var(--danger);
}

.status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--success);
  animation: pulse 2s infinite;
}

.status-bar.error .status-dot {
  background: var(--danger);
}

@keyframes pulse {

  0%,
  100% {
    opacity: 1;
  }

  50% {
    opacity: 0.4;
  }
}

/* ===== Alert Messages ===== */
#alertContainer {
  position: fixed;
  top: 20px;
  right: 20px;
  z-index: 9999;
  display: flex;
  flex-direction: column;
  gap: 8px;
  max-width: 400px;
}

.alert {
  padding: 14px 18px;
  border-radius: var(--radius-sm);
  font-size: 13px;
  font-weight: 500;
  animation: slideIn 0.3s ease-out;
  backdrop-filter: blur(10px);
  border: 1px solid;
}

.alert-success {
  background: var(--success-bg);
  color: var(--success);
  border-color: rgba(0, 184, 148, 0.3);
}

.alert-error {
  background: var(--danger-bg);
  color: var(--danger);
  border-color: rgba(255, 107, 107, 0.3);
}

@keyframes slideIn {
  from {
    transform: translateX(100%);
    opacity: 0;
  }

  to {
    transform: translateX(0);
    opacity: 1;
  }
}

/* ===== Section Cards ===== */
.section-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  margin-bottom: 20px;
  overflow: hidden;
  transition: var(--transition);
}

.section-card:hover {
  border-color: rgba(108, 92, 231, 0.3);
}

.section-header {
  background: var(--bg-input);
  padding: 14px 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 1px solid var(--border);
}

.section-header h2 {
  font-size: 13px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  gap: 8px;
}

.section-header h2 .icon {
  font-size: 16px;
}

.section-body {
  padding: 20px;
}

/* ===== Form Elements ===== */
.form-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 16px;
}

.form-grid-6 {
  grid-template-columns: repeat(6, 1fr);
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.form-group.span-2 {
  grid-column: span 2;
}

.form-group.span-3 {
  grid-column: span 3;
}

label {
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--text-muted);
}

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

input,
select,
textarea {
  padding: 10px 14px;
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-size: 13px;
  font-family: 'Inter', sans-serif;
  transition: var(--transition);
  outline: none;
  width: 100%;
}

input:focus,
select:focus,
textarea:focus {
  border-color: var(--border-focus);
  box-shadow: 0 0 0 3px rgba(108, 92, 231, 0.15);
}

input[readonly] {
  background: var(--bg-dark);
  color: var(--text-muted);
  cursor: default;
}

select {
  cursor: pointer;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%2372738C' stroke-width='2'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 12px center;
  padding-right: 32px;
}

select option {
  background: var(--bg-card);
  color: var(--text-primary);
}

/* ===== Children Ages ===== */
.children-ages-row {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  align-items: flex-end;
  margin-top: 8px;
  padding: 12px;
  background: var(--bg-input);
  border-radius: var(--radius-sm);
  border: 1px dashed var(--border);
}

.children-ages-row .age-item {
  display: flex;
  flex-direction: column;
  gap: 4px;
  width: 80px;
}

.children-ages-row .age-item label {
  font-size: 10px;
}

.children-ages-row .age-item input {
  padding: 6px 8px;
  font-size: 12px;
  text-align: center;
}

/* ===== Data Tables ===== */
.table-wrap {
  overflow-x: auto;
  border-radius: var(--radius-sm);
}

table {
  width: 100%;
  border-collapse: collapse;
  min-width: 700px;
}

thead th {
  padding: 10px 12px;
  text-align: left;
  font-size: 10px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--text-muted);
  background: var(--bg-dark);
  border-bottom: 1px solid var(--border);
  white-space: nowrap;
}

tbody td {
  padding: 8px 10px;
  border-bottom: 1px solid rgba(46, 45, 69, 0.5);
  vertical-align: top;
}

tbody tr:hover {
  background: rgba(108, 92, 231, 0.04);
}

tbody td input,
tbody td select {
  padding: 8px 10px;
  font-size: 12px;
}

/* ===== Service Cards ===== */
.service-entry {
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 16px;
  margin-bottom: 12px;
  transition: var(--transition);
  position: relative;
}

.service-entry:hover {
  border-color: rgba(108, 92, 231, 0.3);
}

.service-entry-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 12px;
}

.service-entry-header select {
  max-width: 200px;
  font-weight: 600;
}

.service-fields {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 12px;
}

.service-total-row {
  display: flex;
  justify-content: flex-end;
  align-items: center;
  gap: 12px;
  margin-top: 12px;
  padding-top: 12px;
  border-top: 1px solid var(--border);
}

.service-total-row .total-val {
  font-size: 16px;
  font-weight: 700;
  color: var(--accent);
}

/* ===== Buttons ===== */
.btn {
  padding: 10px 20px;
  border: none;
  border-radius: var(--radius-sm);
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: 'Inter', sans-serif;
}

.btn:active {
  transform: scale(0.97);
}

.btn-sm {
  padding: 6px 12px;
  font-size: 11px;
}

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

.btn-primary:hover {
  box-shadow: var(--shadow-glow);
  transform: translateY(-1px);
}

.btn-accent {
  background: var(--gradient-accent);
  color: var(--bg-dark);
}

.btn-accent:hover {
  box-shadow: 0 0 20px rgba(0, 206, 201, 0.3);
  transform: translateY(-1px);
}

.btn-ghost {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text-secondary);
}

.btn-ghost:hover {
  border-color: var(--primary);
  color: var(--primary-light);
  background: rgba(108, 92, 231, 0.08);
}

.btn-danger {
  background: var(--danger-bg);
  color: var(--danger);
  border: 1px solid rgba(255, 107, 107, 0.2);
}

.btn-danger:hover {
  background: rgba(255, 107, 107, 0.2);
}

.btn-success {
  background: var(--gradient-accent);
  color: var(--bg-dark);
  font-weight: 700;
}

.btn-success:hover {
  box-shadow: 0 0 20px rgba(0, 206, 201, 0.3);
  transform: translateY(-1px);
}

.btn:disabled {
  opacity: 0.4;
  cursor: not-allowed;
  transform: none !important;
}

/* ===== Total Footer ===== */
.total-footer {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 24px 28px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 20px;
  position: sticky;
  bottom: 20px;
  z-index: 50;
  backdrop-filter: blur(20px);
}

.total-info .total-label {
  font-size: 12px;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 4px;
}

.total-info .total-amount {
  font-size: 32px;
  font-weight: 800;
  background: var(--gradient-accent);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.total-actions {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

/* ===== History Section ===== */
.filter-bar {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 12px;
  margin-bottom: 16px;
}

.history-table tbody tr {
  cursor: pointer;
}

.history-table tbody tr:hover {
  background: rgba(108, 92, 231, 0.08);
}

.status-badge {
  padding: 4px 10px;
  border-radius: 20px;
  font-size: 10px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.status-badge.draft {
  background: var(--warning-bg);
  color: var(--warning);
}

.status-badge.confirmed {
  background: var(--success-bg);
  color: var(--success);
}

.status-badge.cancelled {
  background: var(--danger-bg);
  color: var(--danger);
}

.history-actions {
  display: flex;
  gap: 6px;
}

/* ===== Loading / Spinner ===== */
.spinner {
  width: 32px;
  height: 32px;
  border: 3px solid var(--border);
  border-top-color: var(--primary);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
  margin: 20px auto;
}

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

.loading-msg {
  text-align: center;
  padding: 30px;
  color: var(--text-muted);
  font-size: 13px;
}

/* ===== Edit Mode Banner ===== */
.edit-banner {
  display: none;
  align-items: center;
  justify-content: space-between;
  padding: 12px 20px;
  background: var(--warning-bg);
  border: 1px solid rgba(253, 203, 110, 0.3);
  border-radius: var(--radius-sm);
  margin-bottom: 20px;
  font-size: 13px;
  color: var(--warning);
}

.edit-banner.active {
  display: flex;
}

/* ===== Responsive ===== */
@media (max-width: 1024px) {
  .form-grid-6 {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (max-width: 768px) {
  .app-container {
    padding: 12px;
  }

  .header {
    flex-direction: column;
    gap: 12px;
    text-align: center;
  }

  .form-grid,
  .form-grid-6 {
    grid-template-columns: 1fr 1fr;
  }

  .form-group.span-2,
  .form-group.span-3 {
    grid-column: span 1;
  }

  .total-footer {
    flex-direction: column;
    gap: 16px;
    text-align: center;
  }

  .service-fields {
    grid-template-columns: 1fr 1fr;
  }

  .filter-bar {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 480px) {

  .form-grid,
  .form-grid-6 {
    grid-template-columns: 1fr;
  }

  .service-fields {
    grid-template-columns: 1fr;
  }

  .filter-bar {
    grid-template-columns: 1fr;
  }
}