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

:root {
  --primary: #2563eb;
  --primary-hover: #1d4ed8;
  --success: #10b981;
  --danger: #ef4444;
  --warning: #f59e0b;
  --bg-page: #edf2f9;
  --bg-page-accent: radial-gradient(circle at top left, rgba(37, 99, 235, 0.18), transparent 36%), radial-gradient(circle at top right, rgba(16, 185, 129, 0.14), transparent 30%), linear-gradient(180deg, #f8fbff 0%, #edf2f9 48%, #e7edf7 100%);
  --bg-card: rgba(255, 255, 255, 0.88);
  --bg-card-strong: #ffffff;
  --bg-soft: #f8fafc;
  --bg-soft-2: #eef2ff;
  --text-main: #0f172a;
  --text-sub: #64748b;
  --border-color: rgba(148, 163, 184, 0.25);
  --border-strong: rgba(148, 163, 184, 0.4);
  --shadow-lg: 0 28px 80px rgba(15, 23, 42, 0.12);
  --shadow-md: 0 18px 40px rgba(15, 23, 42, 0.08);
  --radius-xl: 24px;
  --radius-lg: 18px;
  --radius-md: 14px;
  --radius-sm: 10px;
  --overlay: rgba(15, 23, 42, 0.62);
}

:root[data-theme='dark'] {
  --primary: #60a5fa;
  --primary-hover: #3b82f6;
  --success: #34d399;
  --danger: #f87171;
  --warning: #fbbf24;
  --bg-page: #020817;
  --bg-page-accent: radial-gradient(circle at top left, rgba(96, 165, 250, 0.18), transparent 34%), radial-gradient(circle at top right, rgba(52, 211, 153, 0.14), transparent 26%), linear-gradient(180deg, #08111f 0%, #040b16 46%, #020817 100%);
  --bg-card: rgba(10, 17, 30, 0.82);
  --bg-card-strong: #0f172a;
  --bg-soft: #111827;
  --bg-soft-2: #172036;
  --text-main: #e5eefb;
  --text-sub: #94a3b8;
  --border-color: rgba(148, 163, 184, 0.16);
  --border-strong: rgba(148, 163, 184, 0.24);
  --shadow-lg: 0 30px 90px rgba(2, 6, 23, 0.45);
  --shadow-md: 0 18px 44px rgba(2, 6, 23, 0.34);
  --overlay: rgba(2, 6, 23, 0.78);
}

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

html {
  color-scheme: light;
}

:root[data-theme='dark'] html {
  color-scheme: dark;
}

body {
  min-height: 100vh;
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background: var(--bg-page-accent);
  color: var(--text-main);
}

a {
  color: inherit;
}

button,
input,
textarea {
  font: inherit;
}

.navbar {
  position: sticky;
  top: 0;
  z-index: 50;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 18px 24px;
  background: color-mix(in srgb, var(--bg-card) 90%, transparent);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-color);
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
  font-size: 18px;
  letter-spacing: -0.02em;
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 14px;
}

.nav-tabs {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 5px;
  border: 1px solid var(--border-color);
  border-radius: 999px;
  background: color-mix(in srgb, var(--bg-card-strong) 88%, transparent);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.08);
}

.nav-item {
  border: none;
  background: transparent;
  color: var(--text-sub);
  cursor: pointer;
  border-radius: 999px;
  transition: all 0.22s ease;
  white-space: nowrap;
  padding: 9px 15px;
  font-size: 14px;
  font-weight: 600;
}

.nav-item.active {
  color: var(--text-main);
  background: var(--bg-card-strong);
  box-shadow: var(--shadow-md);
}

.nav-item:hover {
  color: var(--text-main);
  background: color-mix(in srgb, var(--primary) 10%, var(--bg-card-strong));
}

.main-container {
  width: min(1160px, calc(100% - 32px));
  margin: 28px auto 36px;
}

.view-section {
  display: none;
}

.view-section.active {
  display: block;
  animation: fade-in 0.25s ease;
}

@keyframes fade-in {
  from {
    opacity: 0;
    transform: translateY(8px);
  }

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

.recharge-grid {
  display: grid;
  grid-template-columns: 300px 1fr;
  gap: 24px;
  align-items: start;
}

.guide-card,
.action-card,
.query-container,
.modal {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-lg);
  backdrop-filter: blur(18px);
}

.guide-card {
  padding: 24px;
  border-radius: var(--radius-xl);
}

.guide-title {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 20px;
  font-size: 15px;
  font-weight: 700;
}

.step-list {
  position: relative;
  margin-left: 10px;
  padding-left: 22px;
  border-left: 2px solid color-mix(in srgb, var(--border-strong) 70%, transparent);
}

.step-item {
  position: relative;
  margin-bottom: 28px;
}

.step-item:last-child {
  margin-bottom: 0;
}

.step-dot {
  position: absolute;
  left: -30px;
  top: 2px;
  width: 14px;
  height: 14px;
  border-radius: 999px;
  border: 3px solid var(--bg-card-strong);
  background: color-mix(in srgb, var(--text-sub) 40%, transparent);
  box-shadow: 0 0 0 1px var(--border-color);
}

.step-item.active .step-dot {
  background: var(--primary);
  box-shadow: 0 0 0 6px color-mix(in srgb, var(--primary) 18%, transparent);
}

.step-item.completed .step-dot {
  background: var(--success);
}

.step-name {
  margin-bottom: 6px;
  font-size: 14px;
  font-weight: 700;
}

.step-desc {
  font-size: 12px;
  line-height: 1.65;
  color: var(--text-sub);
}

.guide-link-group {
  display: flex;
  align-items: center;
  justify-content: flex-start;
  gap: 8px;
  flex-wrap: wrap;
}

.guide-link-group + .guide-link-group {
  margin-top: 10px;
}

.guide-link-group span {
  display: inline-block;
}

.guide-link-group .link-btn {
  margin-top: 0;
  flex: 0 0 auto;
}

.link-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: 8px;
  padding: 5px 10px;
  border-radius: 999px;
  color: var(--primary);
  text-decoration: none;
  background: color-mix(in srgb, var(--primary) 12%, var(--bg-card-strong));
}

.action-card,
.query-container,
.task-query-card {
  border-radius: var(--radius-xl);
}

.action-column {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.action-card {
  min-height: 460px;
  padding: 28px;
}

.query-container,
.task-query-card {
  padding: 28px;
}

.task-query-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-lg);
  backdrop-filter: blur(18px);
}

.task-query-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 18px;
  font-size: 20px;
  font-weight: 800;
  letter-spacing: -0.02em;
}

.task-query-icon {
  color: var(--text-main);
  font-size: 20px;
}

.task-query-form {
  display: flex;
  align-items: center;
  gap: 14px;
}

.task-query-card .input-field {
  min-height: 64px;
  padding: 18px 20px;
  border-radius: 20px;
}

.task-query-submit {
  min-width: 74px;
  padding: 0;
  border: none;
  background: transparent;
  color: var(--primary);
  box-shadow: none;
}

.task-query-submit:hover {
  color: var(--primary-hover);
  background: transparent;
  box-shadow: none;
  transform: none;
}

.task-query-submit:disabled {
  color: var(--text-sub);
  background: transparent;
}

.task-query-feedback {
  margin-top: 16px;
}

.step-panel {
  display: none;
}

.step-panel.active {
  display: block;
}

.panel-title,
.query-title {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 18px;
  font-size: 20px;
  font-weight: 800;
  letter-spacing: -0.02em;
}

.step-number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  border-radius: 999px;
  background: linear-gradient(135deg, var(--primary), color-mix(in srgb, var(--primary) 70%, white));
  color: #fff;
  font-size: 12px;
}

.form-group {
  margin-bottom: 16px;
}

.input-field {
  width: 100%;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 14px 16px;
  background: color-mix(in srgb, var(--bg-card-strong) 92%, transparent);
  color: var(--text-main);
  outline: none;
  transition: border-color 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
}

.input-field::placeholder {
  color: color-mix(in srgb, var(--text-sub) 86%, transparent);
}

.input-field:focus {
  border-color: color-mix(in srgb, var(--primary) 70%, white);
  box-shadow: 0 0 0 4px color-mix(in srgb, var(--primary) 16%, transparent);
}

textarea.input-field {
  min-height: 138px;
  resize: vertical;
}

.btn-row {
  display: flex;
  gap: 12px;
  align-items: center;
  margin-top: 4px;
}

.btn {
  width: 100%;
  border: none;
  border-radius: 999px;
  padding: 13px 18px;
  font-size: 14px;
  font-weight: 700;
  cursor: pointer;
  transition: transform 0.16s ease, box-shadow 0.2s ease, background 0.2s ease;
  background: linear-gradient(135deg, var(--primary), color-mix(in srgb, var(--primary) 78%, white));
  color: #fff;
  box-shadow: 0 16px 32px color-mix(in srgb, var(--primary) 24%, transparent);
}

.btn:hover {
  transform: translateY(-1px);
  background: linear-gradient(135deg, var(--primary-hover), color-mix(in srgb, var(--primary) 60%, white));
}

.btn:disabled {
  cursor: not-allowed;
  opacity: 0.75;
  transform: none;
}

.btn-secondary {
  background: color-mix(in srgb, var(--bg-card-strong) 94%, transparent);
  color: var(--text-main);
  border: 1px solid var(--border-color);
  box-shadow: none;
}

.btn-secondary:hover {
  background: color-mix(in srgb, var(--primary) 10%, var(--bg-card-strong));
}

.confirm-card {
  margin-bottom: 16px;
  padding: 14px 16px;
  border-radius: var(--radius-lg);
  background: color-mix(in srgb, var(--bg-soft) 92%, transparent);
  border: 1px solid var(--border-color);
}

.confirm-row {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 8px;
  font-size: 14px;
}

.confirm-row:last-child {
  margin-bottom: 0;
}

.confirm-label {
  color: var(--text-sub);
}

.result-panel {
  padding-top: 28px;
  text-align: center;
}

.result-reset-btn {
  margin-top: 30px;
  width: auto;
  min-width: 148px;
}

.query-count-text {
  margin-top: 6px;
  text-align: right;
  font-size: 12px;
  color: var(--text-sub);
}

.query-progress {
  margin-bottom: 12px;
  padding: 12px 14px;
  border-radius: var(--radius-md);
  background: color-mix(in srgb, var(--primary) 12%, var(--bg-card-strong));
  color: var(--primary);
  font-size: 13px;
  font-weight: 600;
}

.stats-bar {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
  margin: 24px 0;
}

.stat-item {
  padding: 18px;
  border-radius: var(--radius-lg);
  text-align: center;
  background: color-mix(in srgb, var(--bg-soft) 95%, transparent);
  border: 1px solid var(--border-color);
}

.stat-val {
  display: block;
  margin-bottom: 6px;
  font-size: 24px;
  font-weight: 800;
}

#statUsed {
  color: var(--text-sub);
}

#statUnused {
  color: var(--success);
}

.stat-label {
  font-size: 12px;
  color: var(--text-sub);
}

.results-toolbar {
  margin-bottom: 16px;
  justify-content: flex-start;
  flex-wrap: wrap;
}

.results-toolbar .btn {
  width: auto;
}

.copy-btn {
  margin-left: auto;
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.table-wrap {
  overflow-x: auto;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-color);
}

.result-table {
  width: 100%;
  border-collapse: collapse;
  min-width: 640px;
}

.result-table thead {
  background: color-mix(in srgb, var(--bg-soft-2) 86%, transparent);
}

.result-table th,
.result-table td {
  padding: 12px 14px;
  text-align: left;
  font-size: 14px;
}

.result-table th {
  color: var(--text-sub);
  font-size: 12px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.result-table tbody tr {
  border-top: 1px solid var(--border-color);
}

.result-table tbody tr:hover {
  background: color-mix(in srgb, var(--primary) 4%, transparent);
}

.modal-overlay {
  position: fixed;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  background: var(--overlay);
  z-index: 1000;
}

.modal {
  width: min(100%, 440px);
  border-radius: 24px;
  overflow: hidden;
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 18px;
  border-bottom: 1px solid var(--border-color);
}

.modal-body {
  max-height: 420px;
  overflow-y: auto;
}

.modal-close {
  font-size: 24px;
  line-height: 1;
  color: var(--text-sub);
  cursor: pointer;
}

.modal-center {
  padding: 24px;
  text-align: center;
}

.modal-center h3 {
  margin-bottom: 10px;
  font-size: 20px;
}

.modal-center p {
  margin-bottom: 20px;
  line-height: 1.7;
  color: var(--text-sub);
}

.modal-icon {
  font-size: 42px;
  margin-bottom: 14px;
}

.modal-icon.danger,
.danger {
  color: var(--danger);
}

.success-wrap {
  margin-bottom: 18px;
}

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

.modal-product {
  width: min(100%, 360px);
}

.product-modal-title {
  margin-bottom: 18px;
}

.product-card {
  margin-bottom: 22px;
  padding: 16px;
  border-radius: var(--radius-lg);
  text-align: left;
  background: color-mix(in srgb, var(--bg-soft) 92%, transparent);
  border: 1px solid var(--border-color);
}

.product-card-section + .product-card-section {
  margin-top: 14px;
}

.product-card-label {
  margin-bottom: 4px;
  font-size: 12px;
  color: var(--text-sub);
}

.product-card-value {
  font-size: 15px;
  font-weight: 700;
}

.product-card-value.highlight {
  color: var(--primary);
}

.alert {
  display: flex;
  gap: 10px;
  align-items: flex-start;
  margin-top: 14px;
  padding: 12px 14px;
  border-radius: var(--radius-md);
  border: 1px solid transparent;
  font-size: 13px;
  line-height: 1.6;
}

.alert-success {
  color: var(--primary);
  background: color-mix(in srgb, var(--primary) 12%, transparent);
  border-color: color-mix(in srgb, var(--primary) 20%, transparent);
}

.alert-error {
  color: var(--danger);
  background: color-mix(in srgb, var(--danger) 10%, transparent);
  border-color: color-mix(in srgb, var(--danger) 18%, transparent);
}

.alert-info {
  color: var(--primary);
  background: color-mix(in srgb, var(--primary) 10%, transparent);
  border-color: color-mix(in srgb, var(--primary) 18%, transparent);
}

.alert-message {
  white-space: pre-line;
}

.toast {
  position: fixed;
  left: 50%;
  bottom: 28px;
  transform: translateX(-50%);
  z-index: 1100;
  padding: 10px 18px;
  border-radius: 999px;
  background: rgba(15, 23, 42, 0.88);
  color: #fff;
  font-size: 13px;
  box-shadow: var(--shadow-md);
}

.brand-icon {
  color: var(--primary);
}

.btn-icon-trailing {
  margin-left: 6px;
}

.btn-fixed-third {
  width: 30%;
}

.vip-warning-alert {
  margin-bottom: 20px;
}

.modal-close {
  background: transparent;
  border: none;
  padding: 0;
}

.is-hidden {
  display: none;
}

@media (max-width: 980px) {
  .navbar {
    flex-direction: column;
    align-items: stretch;
  }

  .nav-actions {
    flex-direction: column;
    align-items: stretch;
  }
  .nav-tabs {
    justify-content: center;
  }

  .recharge-grid {
    grid-template-columns: 1fr;
  }

  .guide-card {
    order: -1;
  }
}

@media (max-width: 768px) {
  .main-container {
    width: min(100%, calc(100% - 20px));
    margin: 18px auto 28px;
  }


  .action-card,
  .query-container,
  .guide-card,
  .task-query-card {
    padding: 20px;
    border-radius: 20px;
  }
  .nav-item {
    flex: 1 1 auto;
    justify-content: center;
  }

  .btn-row {
    flex-direction: column;
  }

  .btn-row > * {
    width: 100% !important;
  }

  .task-query-form {
    flex-direction: column;
    align-items: stretch;
  }

  .task-query-submit {
    width: auto;
    align-self: flex-end;
  }

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

  .copy-btn {
    margin-left: 0;
  }
}