:root {
  --color-bg-start: #0099ff;
  --color-bg-end: #0055ff;
  --color-white: #ffffff;
  --color-text-primary: #1a1f2e;
  --color-text-secondary: #5a6175;
  --color-text-light: #8b92a7;
  --color-primary: #007aff;
  --color-accent: #00c6ff;
  --color-success: #34c759;
  --gradient-app: linear-gradient(135deg, #00C6FF 0%, #0072FF 100%);
  --gradient-pill: linear-gradient(90deg, #00C6FF 0%, #0072FF 100%);
  --spacing-xs: 4px;
  --spacing-sm: 8px;
  --spacing-md: 16px;
  --spacing-lg: 24px;
  --spacing-xl: 32px;
  --radius-sm: 12px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --radius-xl: 32px;
  --radius-pill: 50px;
  --font-main: 'SF Pro Display', 'Segoe UI', 'Roboto', system-ui, sans-serif;
  --font-mono: 'SFMono-Regular', Consolas, 'Liberation Mono', monospace;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  -webkit-tap-highlight-color: transparent;
}

html, body {
  min-height: 100%;
}

body {
  font-family: var(--font-main);
  background: var(--gradient-app);
  color: var(--color-text-primary);
  min-height: 100vh;
  overflow-x: hidden;
  -webkit-text-size-adjust: 100%;
  touch-action: manipulation;
}

.app-background {
  position: fixed;
  inset: 0;
  z-index: -1;
  background: var(--gradient-app);
}

.app-background::before,
.app-background::after {
  content: '';
  position: absolute;
  inset: auto;
  border-radius: 50%;
  pointer-events: none;
  filter: blur(16px);
  opacity: 0.45;
}

.app-background::before {
  width: 44vw;
  height: 44vw;
  top: -12vw;
  right: -10vw;
  background: radial-gradient(circle at center, rgba(255, 255, 255, 0.28), rgba(255, 255, 255, 0));
}

.app-background::after {
  width: 36vw;
  height: 36vw;
  left: -8vw;
  bottom: -12vw;
  background: radial-gradient(circle at center, rgba(255, 255, 255, 0.18), rgba(255, 255, 255, 0));
}

.container {
  max-width: 480px;
  margin: 0 auto;
  padding: var(--spacing-md);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.app-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 12px 4px;
  margin-bottom: 4px;
  gap: 12px;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
}

.logo {
  font-family: var(--font-main);
  font-weight: 800;
  font-size: 1.6rem;
  color: white;
  letter-spacing: -0.03em;
  text-shadow: 0 2px 12px rgba(0, 0, 0, 0.15);
  display: flex;
  align-items: center;
  gap: 8px;
}

.miniapp-link {
  appearance: none;
  border: none;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.14);
  color: white;
  padding: 10px 14px;
  font-family: var(--font-main);
  font-size: 0.92rem;
  font-weight: 600;
  text-decoration: none;
  white-space: nowrap;
  transition: transform 0.2s ease, background 0.2s ease;
  cursor: pointer;
}

.status-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.status-link::before {
  content: '';
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #4ade80;
  box-shadow: 0 0 8px rgba(74, 222, 128, 0.9);
  animation: statusBlink 1.1s ease-in-out infinite;
  flex-shrink: 0;
}

.miniapp-link:active {
  transform: scale(0.96);
  background: rgba(255, 255, 255, 0.2);
}

.header-plans-button {
  display: none;
}

@keyframes statusBlink {
  0% {
    opacity: 1;
  }

  50% {
    opacity: 0.2;
    box-shadow: 0 0 4px rgba(74, 222, 128, 0.35);
  }

  100% {
    opacity: 1;
  }
}

.nav-tabs-wrapper {
  display: flex;
  justify-content: center;
  margin-bottom: var(--spacing-lg);
  width: 100%;
}

.nav-tabs {
  display: flex;
  background: transparent;
  gap: 8px;
  width: 100%;
  flex-wrap: nowrap;
}

.nav-tab {
  background: transparent;
  border: none;
  color: rgba(255, 255, 255, 0.7);
  font-family: var(--font-main);
  font-size: 0.88rem;
  font-weight: 500;
  padding: 10px 8px;
  cursor: pointer;
  transition: all 0.3s;
  border-radius: 20px;
  flex: 1;
  min-width: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  text-align: center;
  line-height: 1.2;
  min-height: 44px;
}

.nav-tab-icon {
  width: 18px;
  height: 18px;
  flex-shrink: 0;
}

.nav-tab-label {
  display: block;
  min-width: 0;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.nav-tab.active {
  color: var(--color-primary);
  background: white;
  font-weight: 600;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.nav-tab:active {
  transform: scale(0.96);
}

.main {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
  padding-bottom: calc(var(--spacing-xl) + 86px);
}

.tab-content {
  display: none;
  flex-direction: column;
  gap: var(--spacing-md);
  animation: fadeIn 0.4s ease;
}

.tab-content.active {
  display: flex;
}

.plans-list {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

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

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

.card {
  background: white;
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.15);
  position: relative;
  overflow: hidden;
}

.card-title {
  color: #4da6ff;
  font-size: 1rem;
  font-weight: 700;
  text-transform: uppercase;
  margin-bottom: var(--spacing-md);
  letter-spacing: 0.5px;
}

.screen-title {
  font-size: 1.55rem;
  font-weight: 800;
  color: var(--color-text-primary);
  letter-spacing: -0.03em;
  margin-bottom: 12px;
}

.screen-text {
  color: var(--color-text-secondary);
  line-height: 1.6;
  font-size: 1rem;
}

.screen-text + .screen-text {
  margin-top: 12px;
}

.alert-text {
  padding: 14px 16px;
  border-radius: var(--radius-md);
  background: #fff4e8;
  border: 1px solid rgba(255, 140, 0, 0.24);
}

.inline-link {
  color: #d96a00;
  font-weight: 700;
  text-decoration: none;
}

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

.small-text {
  font-size: 0.95rem;
}

.about-support-grid {
  display: block;
}

.about-support-grid > * + * {
  margin-top: var(--spacing-md);
}

.feature-grid {
  display: grid;
  gap: var(--spacing-md);
}

.feature-stat {
  font-size: 1.7rem;
  font-weight: 800;
  color: var(--color-primary);
  letter-spacing: -0.03em;
  margin-bottom: 10px;
}

.device-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.device-chip {
  min-height: 40px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 14px;
  border-radius: 999px;
  background: #f3f8ff;
  color: var(--color-primary);
  font-size: 0.95rem;
  font-weight: 700;
}

.faq-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.faq-item {
  border-radius: var(--radius-md);
  background: #f6f9fc;
  border: 1px solid rgba(0, 122, 255, 0.08);
  padding: 16px 18px;
}

.faq-item[open] {
  background: #f2f8ff;
  border-color: rgba(0, 122, 255, 0.16);
}

.faq-question {
  list-style: none;
  cursor: pointer;
  font-size: 1rem;
  font-weight: 700;
  color: var(--color-text-primary);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.faq-question::-webkit-details-marker {
  display: none;
}

.faq-question::after {
  content: '+';
  flex-shrink: 0;
  font-size: 1.2rem;
  line-height: 1;
  color: var(--color-primary);
}

.faq-item[open] .faq-question::after {
  content: '–';
}

.faq-answer {
  margin-top: 12px;
  color: var(--color-text-secondary);
  line-height: 1.65;
  font-size: 0.96rem;
}

.links-grid {
  display: grid;
  gap: 12px;
}

.resource-link {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 16px 18px;
  border-radius: var(--radius-md);
  background: #f7faff;
  border: 1px solid rgba(0, 122, 255, 0.08);
  text-decoration: none;
  transition: transform 0.2s ease, background 0.2s ease;
}

.resource-link:active {
  transform: scale(0.98);
}

.resource-label {
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-weight: 700;
  color: var(--color-text-light);
}

.resource-value {
  font-size: 1rem;
  font-weight: 700;
  color: var(--color-text-primary);
  line-height: 1.45;
}

.info-list {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.info-row {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.label {
  font-size: 0.75rem;
  color: var(--color-text-secondary);
  text-transform: uppercase;
  font-weight: 600;
  letter-spacing: 0.05em;
}

.value {
  font-size: 1.02rem;
  font-weight: 700;
  color: var(--color-text-primary);
  display: block;
}

.status-card-head,
.server-header,
.server-stats-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
}

.status-pill {
  padding: 4px 12px;
  border-radius: var(--radius-pill);
  background: #e0e0e0;
  color: #888;
  position: relative;
  overflow: hidden;
  flex-shrink: 0;
}

.status-pill::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.4), transparent);
  animation: shimmer 2.5s infinite;
}

.status-pill.active {
  background: var(--gradient-pill);
  color: white;
  box-shadow: 0 4px 10px rgba(0, 114, 255, 0.3);
}

.status-text {
  font-size: 0.9rem;
  font-weight: 600;
}

@keyframes shimmer {
  100% {
    left: 100%;
  }
}

.server-card {
  background: white;
  border-radius: var(--radius-md);
  padding: var(--spacing-md);
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
}

.plan-card-static {
  display: block;
}

.server-name {
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  flex: 1;
  min-width: 0;
  margin-right: 12px;
  font-weight: 700;
  font-size: 1.06rem;
  color: var(--color-text-primary);
}

.stat-mini {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.price-placeholder {
  margin: 16px 0 14px;
  font-size: 1.12rem;
  font-weight: 700;
  color: var(--color-primary);
}

.plan-features {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin: 16px 0 18px;
}

.plan-features li {
  position: relative;
  padding-left: 18px;
  color: var(--color-text-secondary);
  line-height: 1.45;
}

.plan-features li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 8px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--color-accent);
}

.plan-empty-note {
  color: var(--color-text-secondary);
  line-height: 1.5;
  font-size: 0.95rem;
}

.btn-buy-large {
  width: 100%;
  background: var(--gradient-app);
  color: white;
  padding: 16px;
  font-size: 1.02rem;
  font-weight: 700;
  border-radius: var(--radius-md);
  border: none;
  cursor: pointer;
  box-shadow: 0 10px 20px rgba(0, 114, 255, 0.3);
  transition: transform 0.2s;
  font-family: var(--font-main);
}

.btn-buy-large:active {
  transform: scale(0.98);
}

.bottom-buy-wrap {
  position: fixed;
  left: 50%;
  bottom: 0;
  width: 100%;
  max-width: 480px;
  transform: translateX(-50%);
  padding: 12px 16px 18px;
  background: linear-gradient(180deg, rgba(0, 114, 255, 0) 0%, rgba(0, 114, 255, 0.22) 24%, rgba(0, 114, 255, 0.34) 100%);
}

.bottom-buy-button {
  display: block;
}

.modal {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.5);
  z-index: 1000;
  display: none;
  align-items: flex-end;
  justify-content: center;
  backdrop-filter: blur(4px);
  opacity: 0;
  transition: opacity 0.3s ease;
}

.modal.active {
  display: flex;
  opacity: 1;
}

.modal-content {
  background: white;
  width: 100%;
  max-width: 480px;
  border-radius: var(--radius-lg) var(--radius-lg) 0 0;
  padding: var(--spacing-lg);
  box-shadow: 0 -4px 20px rgba(0, 0, 0, 0.2);
  transform: translateY(100%);
  transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  max-height: 85vh;
  overflow-y: auto;
}

.modal.active .modal-content {
  transform: translateY(0);
}

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: var(--spacing-lg);
  gap: 12px;
}

.modal-header-copy {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.modal-header h2 {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-text-primary);
}

.modal-subtitle {
  color: var(--color-text-secondary);
  font-size: 0.9rem;
  line-height: 1.45;
}

.close-modal {
  background: none;
  border: none;
  cursor: pointer;
  color: var(--color-text-secondary);
  padding: 4px;
}

.close-modal svg {
  width: 24px;
  height: 24px;
}

.plans-container {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

.plan-card {
  width: 100%;
  background: #f5f8fa;
  border: 2px solid transparent;
  border-radius: var(--radius-md);
  padding: var(--spacing-md);
  cursor: pointer;
  transition: all 0.2s ease;
  display: flex;
  justify-content: space-between;
  align-items: center;
  text-align: left;
  font-family: var(--font-main);
}

.plan-card:active {
  background: #eef2f6;
  transform: scale(0.98);
}

.plan-card.selected {
  border-color: var(--color-primary);
  background: rgba(0, 122, 255, 0.05);
}

.plan-info {
  display: flex;
  flex-direction: column;
  gap: 4px;
  min-width: 0;
}

.plan-name {
  font-weight: 700;
  font-size: 1rem;
  color: var(--color-text-primary);
}

.plan-meta {
  font-size: 0.8rem;
  color: var(--color-primary);
  font-weight: 600;
}

.plan-desc {
  font-size: 0.8rem;
  color: var(--color-text-secondary);
  line-height: 1.45;
}

.plan-price {
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--color-primary);
  flex-shrink: 0;
  margin-left: 12px;
}

.plan-button {
  width: 100%;
  background: var(--color-primary);
  color: white;
  border: none;
  padding: 16px;
  border-radius: var(--radius-md);
  font-weight: 700;
  font-size: 1rem;
  margin-top: var(--spacing-lg);
  cursor: pointer;
  box-shadow: 0 4px 15px rgba(0, 114, 255, 0.3);
  transition: transform 0.2s;
}

.plan-button:disabled {
  opacity: 0.5;
}

.plan-button:active {
  transform: scale(0.98);
}

@media (min-width: 960px) {
  body {
    background:
      radial-gradient(circle at 18% 12%, rgba(255, 255, 255, 0.18), transparent 26%),
      radial-gradient(circle at 86% 18%, rgba(255, 255, 255, 0.12), transparent 22%),
      radial-gradient(circle at 50% 120%, rgba(0, 198, 255, 0.24), transparent 30%),
      var(--gradient-app);
  }

  .container {
    max-width: 1180px;
    padding: 28px 32px 0;
  }

  .app-header {
    padding: 18px 0 22px;
    margin-bottom: 10px;
    align-items: flex-end;
  }

  .logo {
    font-size: 2rem;
    letter-spacing: -0.045em;
  }

  .header-actions {
    gap: 12px;
  }

  .miniapp-link {
    padding: 12px 18px;
    font-size: 0.96rem;
  }

  .header-plans-button {
    display: inline-flex;
  }

  .nav-tabs-wrapper {
    justify-content: flex-start;
    margin-bottom: 22px;
  }

  .nav-tabs {
    width: auto;
    min-width: 320px;
    max-width: 420px;
    gap: 10px;
  }

  .nav-tab {
    flex: 0 0 auto;
    padding: 12px 18px;
    min-height: 48px;
  }

  .main {
    padding-bottom: 24px;
  }

  .tab-content.active {
    display: grid;
    grid-template-columns: minmax(0, 1fr);
    gap: 24px;
  }

  .card {
    border-radius: var(--radius-xl);
    padding: 28px;
    box-shadow: 0 22px 60px rgba(7, 25, 54, 0.18);
  }

  .intro-card {
    padding: 34px 32px 30px;
  }

  .about-support-grid {
    display: block;
  }

  .feature-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 24px;
  }

  .about-support-grid > * + * {
    margin-top: var(--spacing-md);
  }

  .screen-title {
    max-width: 10ch;
    font-size: clamp(2.4rem, 3.6vw, 4rem);
    line-height: 0.98;
    margin-bottom: 18px;
  }

  .screen-text {
    max-width: 70ch;
    font-size: 1.04rem;
    line-height: 1.75;
  }

  .card-title {
    font-size: 0.82rem;
    letter-spacing: 0.14em;
    margin-bottom: 18px;
  }

  .faq-list {
    gap: 14px;
  }

  .faq-item {
    padding: 18px 20px;
    border-radius: 18px;
  }

  .faq-question {
    font-size: 1.02rem;
  }

  .links-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 14px;
  }

  .resource-link {
    min-height: 108px;
    justify-content: space-between;
    padding: 18px 20px;
    border-radius: 18px;
  }

  .info-list {
    gap: 16px;
  }

  .info-row {
    flex-direction: row;
    justify-content: space-between;
    align-items: flex-start;
    gap: 20px;
    padding: 14px 0;
    border-top: 1px solid rgba(26, 31, 46, 0.08);
  }

  .info-row:first-child {
    border-top: 0;
    padding-top: 0;
  }

  .label {
    flex: 0 0 140px;
    padding-top: 2px;
  }

  .value {
    text-align: right;
    max-width: 32ch;
  }

  .status-card-head,
  .server-header,
  .server-stats-row {
    align-items: flex-start;
  }

  .status-card {
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    gap: 18px;
    min-height: 100%;
  }

  .status-card .small-text {
    max-width: 34ch;
  }

  .status-pill {
    padding: 6px 14px;
  }

  .modal {
    align-items: center;
    padding: 32px;
  }

  .bottom-buy-wrap {
    display: none;
  }

  .modal-content {
    max-width: 940px;
    width: min(940px, 100%);
    border-radius: 28px;
    padding: 28px;
    max-height: min(88vh, 900px);
    box-shadow: 0 30px 80px rgba(0, 0, 0, 0.28);
    transform: translateY(18px) scale(0.98);
  }

  .modal.active .modal-content {
    transform: translateY(0) scale(1);
  }

  .modal-header {
    align-items: center;
    margin-bottom: 22px;
  }

  .modal-header h2 {
    font-size: 1.5rem;
  }

  .plans-container {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 16px;
  }

  .plan-card {
    min-height: 124px;
    padding: 18px 18px 20px;
    align-items: flex-start;
    flex-direction: column;
    gap: 18px;
    border-radius: 20px;
  }

  .plan-info {
    gap: 6px;
  }

  .plan-price {
    margin-left: 0;
    font-size: 1.2rem;
  }

  #plans-container .plan-button {
    grid-column: 1 / -1;
    width: 100%;
    margin-top: 6px;
    justify-self: stretch;
  }
}

@media (min-width: 1280px) {
  .container {
    padding-inline: 40px;
  }

  .tab-content.active {
    gap: 28px;
  }

  .intro-card {
    padding: 40px 40px 34px;
  }

  .links-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .screen-text {
    max-width: 68ch;
  }

  .modal-content {
    max-width: 1040px;
    padding: 32px;
  }

  .plans-container {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  #plans-container .plan-button {
    grid-column: 1 / -1;
  }
}

@media (max-width: 420px) {
  .nav-tabs-wrapper {
    width: 100%;
    padding: 0 var(--spacing-sm);
  }

  .nav-tabs {
    width: 100%;
    gap: 6px;
  }

  .nav-tab {
    font-size: clamp(0.74rem, 2.7vw, 0.84rem);
    line-height: 1.15;
    padding: 10px 6px;
    gap: 4px;
  }

  .nav-tab-icon {
    width: 16px;
    height: 16px;
  }

  .nav-tab-label {
    max-width: 100%;
  }

  .screen-title {
    font-size: 1.35rem;
  }
}

@media (max-width: 379px) {
  .nav-tab {
    padding: 10px 4px;
  }

  .nav-tab-label {
    display: none;
  }

  .nav-tab-icon {
    width: 18px;
    height: 18px;
  }

  .logo {
    font-size: 1.42rem;
  }

  .miniapp-link {
    padding: 9px 12px;
    font-size: 0.88rem;
  }

  .header-actions {
    gap: 6px;
  }
}