/* ===== CSS Custom Properties ===== */
:root {
  --color-bg: #f8fafb;
  --color-surface: #ffffff;
  --color-text: #1e293b;
  --color-text-secondary: #64748b;
  --color-text-muted: #94a3b8;
  --color-accent: #0d9488;
  --color-accent-dark: #0f766e;
  --color-accent-light: #ccfbf1;
  --color-border: #e2e8f0;
  --color-border-light: #f1f5f9;

  --font-sans: "PingFang SC", "Noto Sans SC", "Microsoft YaHei", system-ui, -apple-system, sans-serif;
  --font-mono: "JetBrains Mono", "Cascadia Code", "Fira Code", monospace;

  --text-xs: 0.75rem;
  --text-sm: 0.875rem;
  --text-base: 1rem;
  --text-lg: 1.125rem;
  --text-xl: 1.25rem;
  --text-2xl: 1.5rem;
  --text-3xl: 2rem;
  --text-4xl: 2.75rem;

  --space-xs: 0.5rem;
  --space-sm: 0.75rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;
  --space-3xl: 5rem;
  --space-section: 6rem;

  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-xl: 24px;

  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.04);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.08);

  --duration-fast: 150ms;
  --duration-normal: 300ms;
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
}

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

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-sans);
  font-size: var(--text-base);
  line-height: 1.7;
  color: var(--color-text);
  background: var(--color-bg);
}

a {
  color: inherit;
  text-decoration: none;
}

img {
  max-width: 100%;
  display: block;
}

/* ===== Container ===== */
.container {
  width: 100%;
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 var(--space-xl);
}

/* ===== Header ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(248, 250, 251, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border-light);
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 60px;
}

.logo {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-weight: 700;
  font-size: var(--text-lg);
  letter-spacing: -0.01em;
}

.nav-links {
  display: flex;
  gap: var(--space-xl);
}

.nav-links a {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  transition: color var(--duration-fast);
  padding: var(--space-xs) 0;
}

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

/* ===== Hero ===== */
.hero {
  padding: var(--space-3xl) 0 var(--space-3xl);
  text-align: center;
}

.hero-tag {
  display: inline-block;
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-accent);
  background: var(--color-accent-light);
  padding: 4px 12px;
  border-radius: 20px;
  margin-bottom: var(--space-xl);
}

.hero h1 {
  font-size: var(--text-4xl);
  font-weight: 800;
  line-height: 1.25;
  letter-spacing: -0.02em;
  margin-bottom: var(--space-lg);
  color: #0f172a;
}

.text-accent {
  color: var(--color-accent);
}

.hero-desc {
  font-size: var(--text-lg);
  color: var(--color-text-secondary);
  line-height: 1.8;
  max-width: 600px;
  margin: 0 auto var(--space-2xl);
}

.hero-actions {
  display: flex;
  gap: var(--space-md);
  justify-content: center;
  align-items: center;
}

/* ===== Inline Link ===== */
.inline-link {
  color: var(--color-accent);
  font-weight: 600;
  white-space: nowrap;
}

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

/* ===== Buttons ===== */
.btn-primary {
  display: inline-flex;
  align-items: center;
  padding: 12px 28px;
  background: var(--color-accent);
  color: #fff;
  font-weight: 600;
  font-size: var(--text-sm);
  border-radius: var(--radius-md);
  transition: background var(--duration-fast), transform var(--duration-fast);
}

.btn-primary:hover {
  background: var(--color-accent-dark);
  transform: translateY(-1px);
}

.btn-secondary {
  display: inline-flex;
  align-items: center;
  padding: 12px 28px;
  background: var(--color-surface);
  color: var(--color-text);
  font-weight: 600;
  font-size: var(--text-sm);
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  transition: border-color var(--duration-fast), transform var(--duration-fast);
}

.btn-secondary:hover {
  border-color: var(--color-accent);
  transform: translateY(-1px);
}

/* ===== Section Header ===== */
.section-header {
  text-align: center;
  margin-bottom: var(--space-3xl);
}

.section-header h2 {
  font-size: var(--text-3xl);
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: var(--space-sm);
}

.section-header p {
  font-size: var(--text-lg);
  color: var(--color-text-secondary);
}

/* ===== Tools Section ===== */
.tools {
  padding: var(--space-section) 0;
}

.tool-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-xl);
}

.tool-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-lg);
  padding: var(--space-2xl);
  position: relative;
  transition: border-color var(--duration-normal), box-shadow var(--duration-normal);
}

.tool-card:hover {
  border-color: var(--color-border);
  box-shadow: var(--shadow-lg);
}

.tool-icon {
  margin-bottom: var(--space-lg);
}

.tool-card h3 {
  font-size: var(--text-xl);
  font-weight: 700;
  margin-bottom: var(--space-sm);
  letter-spacing: -0.01em;
}

.tool-card > p {
  color: var(--color-text-secondary);
  font-size: var(--text-sm);
  line-height: 1.8;
  margin-bottom: var(--space-lg);
}

.tool-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-xs);
  list-style: none;
}

.tool-tags li {
  font-size: var(--text-xs);
  font-family: var(--font-mono);
  color: var(--color-text-muted);
  background: var(--color-border-light);
  padding: 2px 10px;
  border-radius: 4px;
}

.tool-status {
  position: absolute;
  top: var(--space-xl);
  right: var(--space-2xl);
  font-size: var(--text-xs);
  font-weight: 600;
  padding: 3px 10px;
  border-radius: 12px;
}

.tool-status.ready {
  color: #059669;
  background: #ecfdf5;
}

.tool-status.dev {
  color: #d97706;
  background: #fef3c7;
}

/* ===== Features ===== */
.features {
  padding: var(--space-section) 0;
  background: var(--color-surface);
  border-top: 1px solid var(--color-border-light);
  border-bottom: 1px solid var(--color-border-light);
}

.feature-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-2xl) var(--space-3xl);
}

.feature-item {
  display: flex;
  gap: var(--space-lg);
}

.feature-num {
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  color: var(--color-accent);
  font-weight: 700;
  flex-shrink: 0;
  padding-top: 2px;
}

.feature-item h3 {
  font-size: var(--text-lg);
  font-weight: 700;
  margin-bottom: var(--space-xs);
}

.feature-item p {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  line-height: 1.8;
}

/* ===== About ===== */
.about {
  padding: var(--space-section) 0;
}

.about-grid {
  display: grid;
  grid-template-columns: 1fr 280px;
  gap: var(--space-3xl);
  align-items: start;
}

.about-grid h2 {
  font-size: var(--text-3xl);
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: var(--space-lg);
}

.about-grid p {
  font-size: var(--text-base);
  color: var(--color-text-secondary);
  line-height: 1.9;
  margin-bottom: var(--space-md);
}

.about-meta {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-md);
}

.meta-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-md);
  padding: var(--space-lg);
  text-align: center;
}

.meta-card:last-child {
  grid-column: 1 / -1;
}

.meta-num {
  font-size: var(--text-2xl);
  font-weight: 800;
  color: var(--color-accent);
  letter-spacing: -0.02em;
  margin-bottom: 2px;
}

.meta-label {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
}

/* ===== CTA ===== */
.cta {
  padding: var(--space-section) 0;
  text-align: center;
  background: var(--color-surface);
  border-top: 1px solid var(--color-border-light);
}

.cta h2 {
  font-size: var(--text-3xl);
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: var(--space-sm);
}

.cta > .container > p {
  color: var(--color-text-secondary);
  margin-bottom: var(--space-xl);
}

.cta-links {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-lg);
}

.cta-note {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}

/* ===== Footer ===== */
.site-footer {
  padding: var(--space-2xl) 0;
  border-top: 1px solid var(--color-border-light);
  color: var(--color-text-muted);
  font-size: var(--text-sm);
}

.footer-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--space-sm);
}

.footer-row nav {
  display: flex;
  gap: var(--space-lg);
}

.footer-row nav a {
  transition: color var(--duration-fast);
}

.footer-row nav a:hover {
  color: var(--color-text-secondary);
}

.footer-note {
  font-size: var(--text-xs);
}

/* ===== Responsive ===== */
@media (max-width: 768px) {
  :root {
    --text-4xl: 2rem;
    --text-3xl: 1.5rem;
    --space-section: 4rem;
    --space-3xl: 3rem;
  }

  .nav-links {
    display: none;
  }

  .hero-desc br {
    display: none;
  }

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

  .feature-list {
    grid-template-columns: 1fr;
  }

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

  .about-meta {
    grid-template-columns: 1fr 1fr;
  }

  .tool-status {
    position: static;
    display: inline-block;
    margin-top: var(--space-md);
  }

  .hero-actions {
    flex-direction: column;
  }

  .cta-links {
    flex-direction: column;
    gap: var(--space-md);
  }

  .footer-row {
    flex-direction: column;
    gap: var(--space-sm);
    text-align: center;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 var(--space-lg);
  }

  .tool-card {
    padding: var(--space-lg);
  }

  .about-meta {
    grid-template-columns: 1fr;
  }
}

/* ===== Nav Login ===== */
.nav-login {
  font-weight: 600 !important;
  color: var(--color-accent) !important;
  padding: 6px 16px !important;
  border: 1px solid var(--color-accent);
  border-radius: var(--radius-sm);
  transition: background var(--duration-fast), color var(--duration-fast) !important;
}

.nav-login:hover {
  background: var(--color-accent) !important;
  color: #fff !important;
}

.nav-user {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  cursor: default;
}

.user-arrow {
  font-size: 10px;
  color: var(--color-text-muted);
}

/* ===== Auth Page ===== */
.page-auth {
  background: var(--color-bg);
}

.auth-main {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: calc(100vh - 60px - 4rem);
  padding: var(--space-xl);
}

.auth-card {
  width: 100%;
  max-width: 420px;
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border-light);
  box-shadow: var(--shadow-lg);
  overflow: hidden;
}

.auth-tabs {
  display: flex;
  border-bottom: 1px solid var(--color-border-light);
}

.auth-tab {
  flex: 1;
  padding: 14px;
  font-size: var(--text-base);
  font-weight: 600;
  text-align: center;
  background: none;
  border: none;
  color: var(--color-text-muted);
  cursor: pointer;
  transition: color var(--duration-fast);
  position: relative;
}

.auth-tab.active {
  color: var(--color-accent);
}

.auth-tab.active::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 25%;
  width: 50%;
  height: 2px;
  background: var(--color-accent);
  border-radius: 2px;
}

.auth-form {
  display: none;
  padding: var(--space-2xl);
}

.auth-form.active {
  display: block;
}

.field {
  margin-bottom: var(--space-lg);
}

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

.field input[type="email"],
.field input[type="password"],
.field input[type="text"] {
  width: 100%;
  padding: 10px 14px;
  font-size: var(--text-sm);
  font-family: inherit;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--color-bg);
  color: var(--color-text);
  transition: border-color var(--duration-fast), box-shadow var(--duration-fast);
  outline: none;
}

.field input:focus {
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px var(--color-accent-light);
}

.field-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--space-lg);
}

.checkbox-label {
  display: flex !important;
  align-items: center;
  gap: 6px;
  font-size: var(--text-sm) !important;
  font-weight: 400 !important;
  color: var(--color-text-secondary);
  cursor: pointer;
}

.checkbox-label input[type="checkbox"] {
  accent-color: var(--color-accent);
}

.checkbox-label a {
  color: var(--color-accent);
}

.link-sm {
  font-size: var(--text-sm);
  color: var(--color-accent);
}

.btn-block {
  width: 100%;
  justify-content: center;
  padding: 12px;
  font-size: var(--text-base);
  border: none;
  cursor: pointer;
  border-radius: var(--radius-sm);
}

.auth-hint {
  text-align: center;
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  margin-top: var(--space-md);
}

/* ===== Account Page ===== */
.page-account {
  background: var(--color-bg);
}

.account-main {
  padding: var(--space-2xl) 0 var(--space-3xl);
}

/* Balance Banner */
.balance-banner {
  background: linear-gradient(135deg, #0d9488 0%, #0f766e 100%);
  border-radius: var(--radius-lg);
  padding: var(--space-2xl);
  color: #fff;
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--space-2xl);
}

.balance-label {
  font-size: var(--text-sm);
  opacity: 0.8;
  margin-bottom: 4px;
}

.balance-amount {
  display: flex;
  align-items: baseline;
  gap: 4px;
  margin-bottom: 4px;
}

.balance-num {
  font-size: 3rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1;
}

.balance-unit {
  font-size: var(--text-lg);
  opacity: 0.8;
}

.balance-sub {
  font-size: var(--text-sm);
  opacity: 0.7;
}

.balance-stats {
  display: flex;
  gap: var(--space-2xl);
}

.stat-item {
  text-align: center;
}

.stat-num {
  font-size: var(--text-lg);
  font-weight: 700;
}

.stat-label {
  font-size: var(--text-xs);
  opacity: 0.7;
  margin-top: 2px;
}

/* Account Grid */
.account-grid {
  display: grid;
  gap: var(--space-2xl);
}

.recharge-section h2,
.usage-section h2 {
  font-size: var(--text-xl);
  font-weight: 700;
  margin-bottom: 4px;
}

.section-sub {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  margin-bottom: var(--space-xl);
}

/* Package Cards */
.package-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-lg);
}

.package-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-md);
  padding: var(--space-xl);
  text-align: center;
  transition: border-color var(--duration-normal), box-shadow var(--duration-normal);
  position: relative;
}

.package-card:hover {
  border-color: var(--color-accent);
  box-shadow: var(--shadow-md);
}

.package-recommend {
  border-color: var(--color-accent);
  box-shadow: 0 0 0 1px var(--color-accent);
}

.package-badge {
  position: absolute;
  top: -10px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--color-accent);
  color: #fff;
  font-size: var(--text-xs);
  font-weight: 600;
  padding: 2px 14px;
  border-radius: 10px;
}

.package-name {
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-text-secondary);
  margin-bottom: var(--space-sm);
}

.package-price {
  margin-bottom: var(--space-xs);
}

.price-num {
  font-size: var(--text-2xl);
  font-weight: 800;
  color: var(--color-text);
}

.package-quota {
  font-size: var(--text-2xl);
  font-weight: 700;
  color: var(--color-accent);
  margin-bottom: var(--space-xs);
}

.package-per {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  margin-bottom: var(--space-lg);
}

.recharge-btn {
  font-size: var(--text-sm) !important;
  border: none;
  cursor: pointer;
}

/* Usage Table */
.usage-table {
  width: 100%;
  border-collapse: collapse;
  font-size: var(--text-sm);
}

.usage-table th {
  text-align: left;
  font-weight: 600;
  color: var(--color-text-muted);
  font-size: var(--text-xs);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  padding: 12px 16px;
  border-bottom: 2px solid var(--color-border);
}

.usage-table td {
  padding: 14px 16px;
  border-bottom: 1px solid var(--color-border-light);
  color: var(--color-text-secondary);
}

.usage-table tbody tr:hover {
  background: var(--color-bg);
}

.usage-plus {
  color: #059669;
  font-weight: 600;
}

/* ===== Auth & Account Responsive ===== */
@media (max-width: 768px) {
  .auth-card {
    max-width: 100%;
  }

  .auth-form {
    padding: var(--space-xl);
  }

  .balance-banner {
    flex-direction: column;
    text-align: center;
    gap: var(--space-xl);
  }

  .balance-stats {
    gap: var(--space-xl);
  }

  .package-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 480px) {
  .package-grid {
    grid-template-columns: 1fr;
  }

  .balance-stats {
    flex-direction: column;
    gap: var(--space-md);
  }

  .usage-table {
    font-size: var(--text-xs);
  }

  .usage-table th,
  .usage-table td {
    padding: 10px 8px;
  }
}

/* ===== Nav Active ===== */
.nav-active {
  color: var(--color-text) !important;
  font-weight: 600 !important;
}

/* ===== Standards Page ===== */
.standards-hero {
  padding: var(--space-3xl) 0 var(--space-2xl);
  text-align: center;
}

.standards-hero h1 {
  font-size: var(--text-4xl);
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: var(--space-md);
}

.standards-desc {
  font-size: var(--text-lg);
  color: var(--color-text-secondary);
  line-height: 1.8;
  margin-bottom: var(--space-2xl);
}

.standards-search {
  position: relative;
  max-width: 560px;
  margin: 0 auto;
}

.standards-search .search-icon {
  position: absolute;
  left: 16px;
  top: 50%;
  transform: translateY(-50%);
  pointer-events: none;
}

.standards-search input {
  width: 100%;
  padding: 14px 140px 14px 44px;
  font-size: var(--text-base);
  font-family: inherit;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-surface);
  color: var(--color-text);
  outline: none;
  transition: border-color var(--duration-fast), box-shadow var(--duration-fast);
}

.standards-search input:focus {
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px var(--color-accent-light);
}

.standards-search input::placeholder {
  color: var(--color-text-muted);
}

.search-count {
  position: absolute;
  right: 16px;
  top: 50%;
  transform: translateY(-50%);
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  pointer-events: none;
}

/* Standards Layout */
.standards-content {
  padding-bottom: var(--space-section);
}

.standards-layout {
  display: grid;
  grid-template-columns: 200px 1fr;
  gap: var(--space-2xl);
  align-items: start;
}

.standards-sidebar {
  position: sticky;
  top: 80px;
}

.standards-sidebar h3 {
  font-size: var(--text-sm);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--color-text-muted);
  margin-bottom: var(--space-md);
}

.category-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.category-btn {
  width: 100%;
  text-align: left;
  padding: 6px 12px;
  font-size: var(--text-sm);
  font-family: inherit;
  background: none;
  border: none;
  color: var(--color-text-secondary);
  cursor: pointer;
  border-radius: var(--radius-sm);
  transition: background var(--duration-fast), color var(--duration-fast);
}

.category-btn:hover {
  background: var(--color-border-light);
  color: var(--color-text);
}

.category-btn.active {
  background: var(--color-accent-light);
  color: var(--color-accent);
  font-weight: 600;
}

/* Standards Table */
.standards-table-wrap {
  background: var(--color-surface);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.standards-table {
  width: 100%;
  border-collapse: collapse;
  font-size: var(--text-sm);
}

.standards-table th {
  text-align: left;
  font-weight: 600;
  color: var(--color-text-muted);
  font-size: var(--text-xs);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  padding: 14px 16px;
  background: var(--color-bg);
  border-bottom: 2px solid var(--color-border);
  white-space: nowrap;
}

.standards-table td {
  padding: 14px 16px;
  border-bottom: 1px solid var(--color-border-light);
  color: var(--color-text-secondary);
  vertical-align: top;
}

.standards-table tbody tr:hover {
  background: #f8fafb;
}

.standards-table tbody tr:last-child td {
  border-bottom: none;
}

.col-num {
  white-space: nowrap;
  min-width: 160px;
}

.col-num code {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-text);
  background: var(--color-border-light);
  padding: 2px 8px;
  border-radius: 3px;
}

.col-name {
  min-width: 280px;
  color: var(--color-text) !important;
}

.col-cat {
  white-space: nowrap;
}

.cat-tag {
  display: inline-block;
  font-size: var(--text-xs);
  padding: 2px 8px;
  background: var(--color-border-light);
  border-radius: 4px;
  color: var(--color-text-secondary);
  white-space: nowrap;
}

.col-status {
  white-space: nowrap;
  text-align: center;
}

.status-tag {
  display: inline-block;
  font-size: var(--text-xs);
  font-weight: 600;
  padding: 2px 10px;
  border-radius: 10px;
  color: #059669;
  background: #ecfdf5;
}

.status-tag.active {
  color: #059669;
  background: #ecfdf5;
}

.col-date {
  white-space: nowrap;
  min-width: 100px;
  color: var(--color-text-muted);
}

.col-action {
  white-space: nowrap;
  text-align: center;
  min-width: 120px;
}

.btn-view,
.btn-download {
  display: inline-block;
  font-size: var(--text-xs);
  font-weight: 600;
  padding: 4px 12px;
  border-radius: var(--radius-sm);
  transition: background var(--duration-fast), color var(--duration-fast);
}

.btn-view {
  color: var(--color-accent);
  background: var(--color-accent-light);
}

.btn-view:hover {
  color: #fff;
  background: var(--color-accent);
}

.btn-download {
  color: #fff;
  background: var(--color-accent);
}

.btn-download:hover {
  background: var(--color-accent-dark);
}

.no-file {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
}

.no-results {
  text-align: center;
  padding: var(--space-3xl) var(--space-xl);
  color: var(--color-text-muted);
}

.no-results-hint {
  font-size: var(--text-sm);
  margin-top: var(--space-xs);
}

/* Standards responsive */
@media (max-width: 900px) {
  .standards-layout {
    grid-template-columns: 1fr;
  }

  .standards-sidebar {
    position: static;
    margin-bottom: var(--space-lg);
  }

  .category-list {
    flex-direction: row;
    flex-wrap: wrap;
    gap: 4px;
  }

  .category-btn {
    width: auto;
    font-size: var(--text-xs);
    padding: 4px 10px;
    border: 1px solid var(--color-border-light);
    border-radius: 16px;
  }

  .category-btn.active {
    border-color: var(--color-accent);
  }

  .standards-table-wrap {
    overflow-x: auto;
  }

  .standards-table {
    font-size: var(--text-xs);
    min-width: 700px;
  }

  .standards-search input {
    padding-right: 100px;
  }
}

@media (max-width: 480px) {
  .standards-hero h1 {
    font-size: var(--text-2xl);
  }

  .standards-hero {
    padding: var(--space-2xl) 0 var(--space-xl);
  }

  .standards-desc br {
    display: none;
  }

  .standards-search input {
    padding: 12px 100px 12px 40px;
    font-size: var(--text-sm);
  }
}