:root {
  --color-bg-darker: #1e2124;
  --color-bg-dark: #23272a;
  --color-bg-panel: #2c2f33;
  --color-accent: #3ba55d;
  --color-accent-soft: rgba(59, 165, 93, 0.15);
  --color-text-primary: #f7f8f8;
  --color-text-secondary: #99aab5;
  --color-border: rgba(255, 255, 255, 0.08);
  --shadow-soft: 0 12px 32px rgba(0, 0, 0, 0.4);
  font-family: 'Inter', 'Segoe UI', system-ui, -apple-system, BlinkMacSystemFont, 'PingFang SC', 'Microsoft YaHei', sans-serif;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  background: radial-gradient(circle at 20% 20%, rgba(59, 165, 93, 0.2), transparent 55%),
    radial-gradient(circle at 80% 0%, rgba(88, 101, 242, 0.12), transparent 45%),
    var(--color-bg-dark);
  color: var(--color-text-primary);
  font-family: 'Inter', 'Segoe UI', system-ui, -apple-system, BlinkMacSystemFont, 'PingFang SC', 'Microsoft YaHei', sans-serif;
}

.page {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.top-nav {
  width: min(1080px, 100%);
  margin: 24px auto 0;
  padding: 16px 24px;
  background: rgba(35, 39, 42, 0.86);
  border-radius: 22px;
  border: 1px solid rgba(255, 255, 255, 0.06);
  box-shadow: 0 16px 32px rgba(0, 0, 0, 0.32);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  font-weight: 600;
  letter-spacing: 0.4px;
}

.brand-logo {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 42px;
  height: 42px;
  border-radius: 14px;
  background: rgba(59, 165, 93, 0.18);
  color: var(--color-accent);
  font-size: 18px;
}

.brand-name {
  font-size: 18px;
  font-weight: 700;
}

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

.nav-links {
  display: flex;
  align-items: center;
  gap: 18px;
}

.nav-links a {
  color: var(--color-text-secondary);
  text-decoration: none;
  font-size: 15px;
  transition: color 0.18s ease;
}

.nav-links a:hover {
  color: var(--color-text-primary);
}

.nav-primary {
  padding: 10px 16px;
  border-radius: 999px;
  background: rgba(59, 165, 93, 0.16);
  color: var(--color-accent) !important;
  font-weight: 600;
}

.page-content {
  flex: 1;
  width: min(1080px, 100%);
  margin: 40px auto 72px;
  padding: 0 24px 64px;
  display: flex;
  flex-direction: column;
  gap: 72px;
}

.hero {
  display: grid;
  gap: 40px;
  align-items: center;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
}

.hero-text {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.hero-text h1 {
  margin: 0;
  font-size: clamp(32px, 5vw, 48px);
  font-weight: 700;
}

.hero-text p {
  margin: 0;
  color: var(--color-text-secondary);
  font-size: 16px;
  line-height: 1.7;
}

.hero-list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
  color: var(--color-text-secondary);
  font-size: 15px;
}

.hero-list li::before {
  content: '✔';
  color: var(--color-accent);
  margin-right: 8px;
}

.hero-actions {
  display: flex;
  gap: 16px;
  align-items: center;
}

.hero-actions a {
  text-decoration: none;
  font-size: 15px;
  color: var(--color-text-primary);
}

.hero-card {
  display: flex;
  flex-direction: column;
  gap: 22px;
}

.form-card {
  background: rgba(35, 39, 42, 0.82);
  border-radius: 24px;
  padding: 32px clamp(22px, 3vw, 32px);
  border: 1px solid rgba(255, 255, 255, 0.06);
  display: flex;
  flex-direction: column;
  gap: 20px;
  box-shadow: 0 20px 44px rgba(0, 0, 0, 0.35);
}

.form-card h3 {
  margin: 0;
  font-size: 20px;
}

.form-card .form-subtitle {
  margin: 0;
  color: var(--color-text-secondary);
  font-size: 14px;
  line-height: 1.6;
}

input[type='url'],
input[type='text'],
input[type='email'],
input[type='password'] {
  width: 100%;
  padding: 16px 20px;
  border-radius: 16px;
  border: 1px solid transparent;
  background: rgba(255, 255, 255, 0.05);
  color: var(--color-text-primary);
  font-size: 16px;
  transition: border 0.2s ease, background 0.2s ease;
}

input[type='url']::placeholder,
input[type='text']::placeholder,
input[type='email']::placeholder,
input[type='password']::placeholder {
  color: rgba(255, 255, 255, 0.35);
}

input[type='url']:focus,
input[type='text']:focus,
input[type='email']:focus,
input[type='password']:focus {
  outline: none;
  border: 1px solid rgba(59, 165, 93, 0.6);
  background: rgba(59, 165, 93, 0.12);
}

.actions-row {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  align-items: center;
  justify-content: space-between;
  margin-top: 10px;
}

button.primary {
  background: var(--color-accent);
  color: #101418;
  border: none;
  border-radius: 14px;
  padding: 14px 26px;
  font-size: 16px;
  font-weight: 600;
  cursor: pointer;
  transition: transform 0.18s ease, box-shadow 0.18s ease;
  box-shadow: 0 10px 24px rgba(59, 165, 93, 0.35);
}

button.primary:hover:not(:disabled) {
  transform: translateY(-1px);
  box-shadow: 0 14px 30px rgba(59, 165, 93, 0.45);
}

button.primary:disabled {
  cursor: progress;
  opacity: 0.6;
  box-shadow: none;
}

button.ghost {
  background: transparent;
  border: none;
  color: var(--color-text-secondary);
  font-size: 15px;
  cursor: pointer;
  padding: 10px 12px;
  border-radius: 10px;
  transition: background 0.2s ease, color 0.2s ease;
}

button.ghost:hover {
  background: rgba(255, 255, 255, 0.06);
  color: var(--color-text-primary);
}

.advanced-panel {
  background: rgba(59, 165, 93, 0.08);
  border-radius: 18px;
  border: 1px dashed rgba(59, 165, 93, 0.3);
  padding: 18px 20px;
  display: none;
  flex-direction: column;
  gap: 12px;
}

.advanced-panel.active {
  display: flex;
}

.result-card {
  background: rgba(35, 39, 42, 0.78);
  border-radius: 20px;
  border: 1px solid rgba(59, 165, 93, 0.3);
  padding: 24px;
  display: none;
  flex-direction: column;
  gap: 16px;
}

.result-card.active {
  display: flex;
}

.result-link {
  font-size: 20px;
  font-weight: 600;
  color: var(--color-accent);
  word-break: break-all;
}

.status-card {
  max-width: 520px;
  margin: 60px auto;
  background: rgba(35, 39, 42, 0.78);
  border-radius: 22px;
  border: 1px solid rgba(88, 101, 242, 0.18);
  padding: 40px 32px;
  text-align: center;
  display: flex;
  flex-direction: column;
  gap: 18px;
  align-items: center;
  color: var(--color-text-primary);
  box-shadow: 0 24px 48px rgba(0, 0, 0, 0.45);
}

.hero-meta {
  display: flex;
  gap: 18px;
  flex-wrap: wrap;
  color: var(--color-text-secondary);
  font-size: 13px;
}

.hero-meta span {
  padding: 6px 12px;
  border-radius: 999px;
  background: rgba(88, 101, 242, 0.16);
}

.section {
  display: flex;
  flex-direction: column;
  gap: 32px;
}

.section-heading {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.section-heading h2 {
  margin: 0;
  font-size: clamp(26px, 4vw, 32px);
}

.section-heading p {
  margin: 0;
  color: var(--color-text-secondary);
  font-size: 15px;
  line-height: 1.7;
}

.feature-grid {
  margin-top: 32px;
  display: grid;
  gap: 22px;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
}

.feature-card {
  background: rgba(35, 39, 42, 0.78);
  border-radius: 20px;
  padding: 24px;
  border: 1px solid rgba(255, 255, 255, 0.05);
  display: flex;
  flex-direction: column;
  gap: 12px;
  box-shadow: 0 18px 36px rgba(0, 0, 0, 0.28);
}

.feature-icon {
  width: 44px;
  height: 44px;
  border-radius: 14px;
  background: rgba(59, 165, 93, 0.22);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--color-accent);
  font-size: 20px;
}

.feature-card h3 {
  margin: 0;
  font-size: 18px;
}

.feature-card p {
  margin: 0;
  color: var(--color-text-secondary);
  font-size: 14px;
  line-height: 1.7;
}

.api-section {
  background: rgba(35, 39, 42, 0.78);
  border-radius: 24px;
  border: 1px solid rgba(255, 255, 255, 0.06);
  padding: 32px;
  box-shadow: 0 22px 42px rgba(0, 0, 0, 0.32);
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.tab-buttons {
  display: inline-flex;
  background: rgba(59, 165, 93, 0.08);
  border-radius: 999px;
  padding: 4px;
  gap: 6px;
  align-self: flex-start;
}

.tab-button {
  border: none;
  background: transparent;
  color: var(--color-text-secondary);
  padding: 8px 18px;
  border-radius: 999px;
  font-size: 14px;
  cursor: pointer;
  transition: background 0.2s ease, color 0.2s ease;
}

.tab-button.active {
  background: var(--color-accent);
  color: #101418;
  font-weight: 600;
}

.code-block {
  margin: 0;
  padding: 20px 24px;
  background: rgba(22, 24, 27, 0.92);
  border-radius: 18px;
  border: 1px solid rgba(255, 255, 255, 0.05);
  font-family: 'Fira Code', 'JetBrains Mono', 'SFMono-Regular', Consolas, monospace;
  font-size: 14px;
  line-height: 1.7;
  color: #d4f5e3;
  display: none;
  overflow-x: auto;
}

.code-block.active {
  display: block;
}

.code-block code {
  white-space: pre;
}

.status-card h1 {
  font-size: 28px;
  margin: 0;
}

.status-card p {
  margin: 0;
  color: var(--color-text-secondary);
  line-height: 1.6;
}

.status-card.success {
  border-color: rgba(59, 165, 93, 0.35);
}

.status-card.error {
  border-color: rgba(237, 66, 69, 0.35);
}

.status-card.loading {
  border-color: rgba(59, 165, 93, 0.2);
}

.status-card .spinner {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  border: 4px solid rgba(88, 101, 242, 0.2);
  border-top-color: var(--color-accent);
  animation: spin 0.9s linear infinite;
}

.status-card .hint {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.6);
}

.status-card .result-link {
  word-break: break-all;
}

a.primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  background: var(--color-accent);
  color: #ffffff;
  padding: 12px 24px;
  border-radius: 999px;
  text-decoration: none;
  font-weight: 600;
  box-shadow: 0 12px 24px rgba(59, 165, 93, 0.35);
  transition: transform 0.18s ease, box-shadow 0.18s ease, background 0.18s ease;
}

a.primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 14px 28px rgba(59, 165, 93, 0.42);
  background: #40c16a;
}

.result-meta {
  color: var(--color-text-secondary);
  font-size: 14px;
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.toast-container {
  position: fixed;
  bottom: 24px;
  right: 24px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  z-index: 999;
}

.toast {
  min-width: 220px;
  background: rgba(35, 39, 42, 0.95);
  border-radius: 14px;
  padding: 14px 18px;
  color: var(--color-text-primary);
  border-left: 4px solid var(--color-accent);
  box-shadow: 0 10px 24px rgba(0, 0, 0, 0.45);
  opacity: 0;
  transform: translateY(10px);
  animation: toast-in 0.25s ease forwards;
}

.toast.error {
  border-left-color: #ed4245;
}

.toast.success {
  border-left-color: var(--color-accent);
}

.toast.info {
  border-left-color: #5865f2;
}

@keyframes toast-in {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes spin {
  from {
    transform: rotate(0deg);
  }
  to {
    transform: rotate(360deg);
  }
}

@media (max-width: 960px) {
  .top-nav {
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
  }

  .nav-links {
    width: 100%;
    justify-content: space-between;
  }
}

@media (max-width: 768px) {
  .page-content {
    margin: 32px auto 56px;
    padding: 0 18px 56px;
    gap: 56px;
  }

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

  .hero-actions {
    flex-direction: column;
    align-items: flex-start;
  }

  .tab-buttons {
    width: 100%;
  }

  .tab-button {
    flex: 1;
    text-align: center;
  }

  .actions-row {
    flex-direction: column;
    align-items: stretch;
  }

  button.primary {
    width: 100%;
  }
}