/**
 * SMSRiver Minimalist B2B Utility Design System
 * Unified Production Theme (smsriver-theme.css)
 *
 * Target: Django 6.1 + Cloudflare Edge Workers / Static Assets
 * Typography: Geist Sans & Geist Mono (tabular numerals)
 * Archetype: Stripe / PostHog B2B Clarity
 * Compliance: Rule 32 (Vector SVGs only), Rule 38 (1440px Canonical Grid)
 */

:root {
  /* ==========================================================================
     Minimalist B2B Color Tokens
     ========================================================================== */
  --smsriver-bg-canvas: #ffffff;
  --smsriver-bg-surface: #ffffff;
  --smsriver-bg-elevated: #f8fafc;
  --smsriver-bg-hover: #f1f5f9;
  --smsriver-bg-active: #e2e8f0;

  --smsriver-text-primary: #09090b;
  --smsriver-text-secondary: #334155;
  --smsriver-text-muted: #64748b;
  --smsriver-text-subtle: #94a3b8;

  --smsriver-border-subtle: #e2e8f0;
  --smsriver-border-strong: #cbd5e1;
  --smsriver-border-focus: #2563eb;

  --smsriver-accent-primary: #2563eb;
  --smsriver-accent-hover: #1d4ed8;
  --smsriver-accent-active: #1e40af;
  --smsriver-accent-subtle: #eff6ff;
  --smsriver-accent-border: #bfdbfe;
  --smsriver-accent-foreground: #ffffff;

  --smsriver-status-active: #059669;
  --smsriver-status-active-subtle: #ecfdf5;
  --smsriver-status-active-border: #a7f3d0;

  --smsriver-status-warn: #d97706;
  --smsriver-status-warn-subtle: #fffbeb;
  --smsriver-status-warn-border: #fde68a;

  --smsriver-status-error: #dc2626;
  --smsriver-status-error-subtle: #fef2f2;
  --smsriver-status-error-border: #fecaca;

  --smsriver-status-muted: #64748b;
  --smsriver-status-muted-subtle: #f1f5f9;
  --smsriver-status-muted-border: #e2e8f0;

  /* ==========================================================================
     Typography & Metrics
     ========================================================================== */
  --smsriver-font-sans: "Geist", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --smsriver-font-mono: "Geist Mono", "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;

  --smsriver-radius-xs: 4px;
  --smsriver-radius-sm: 6px;
  --smsriver-radius-md: 8px;
  --smsriver-radius-lg: 12px;
  --smsriver-radius-xl: 16px;
  --smsriver-radius-pill: 9999px;

  --smsriver-shadow-xs: 0 1px 2px rgba(15, 23, 42, 0.04);
  --smsriver-shadow-sm: 0 1px 3px rgba(15, 23, 42, 0.06), 0 1px 2px -1px rgba(15, 23, 42, 0.04);
  --smsriver-shadow-md: 0 4px 6px -1px rgba(15, 23, 42, 0.06), 0 2px 4px -2px rgba(15, 23, 42, 0.04);
  --smsriver-shadow-lg: 0 10px 15px -3px rgba(15, 23, 42, 0.08), 0 4px 6px -4px rgba(15, 23, 42, 0.04);
  --smsriver-shadow-xl: 0 20px 25px -5px rgba(15, 23, 42, 0.1), 0 10px 10px -5px rgba(15, 23, 42, 0.04);

  /* ==========================================================================
     Backwards-Compatible Legacy Alias Mappings
     ========================================================================== */
  --bg-base: var(--smsriver-bg-canvas);
  --bg-canvas: var(--smsriver-bg-canvas);
  --bg-surface: var(--smsriver-bg-surface);
  --bg-surface-elevated: var(--smsriver-bg-elevated);
  --bg-surface-hover: var(--smsriver-bg-hover);
  --bg-card: var(--smsriver-bg-surface);
  --bg-card-hover: var(--smsriver-bg-elevated);
  --bg-primary: var(--smsriver-bg-elevated);

  --text-primary: var(--smsriver-text-primary);
  --text-secondary: var(--smsriver-text-secondary);
  --text-muted: var(--smsriver-text-muted);

  --border-subtle: var(--smsriver-border-subtle);
  --border-strong: var(--smsriver-border-strong);
  --border-rack: var(--smsriver-border-subtle);
  --border-color: var(--smsriver-border-subtle);

  --radius-button: var(--smsriver-radius-sm);
  --radius-box: var(--smsriver-radius-lg);
  --radius-control: var(--smsriver-radius-sm);
  --radius-sm: var(--smsriver-radius-sm);
  --radius-md: var(--smsriver-radius-md);
  --radius-lg: var(--smsriver-radius-lg);
  --radius-pill: var(--smsriver-radius-pill);

  --shadow-xs: var(--smsriver-shadow-xs);
  --shadow-sm: var(--smsriver-shadow-sm);
  --shadow-md: var(--smsriver-shadow-md);
  --shadow-lg: var(--smsriver-shadow-lg);
  --shadow-xl: var(--smsriver-shadow-xl);

  /* Legacy Brand Aliases mapped to new Royal Blue palette */
  --accent-cyan: var(--smsriver-accent-primary);
  --accent-cyan-hover: var(--smsriver-accent-hover);
  --accent-cyan-subtle: var(--smsriver-accent-subtle);
  --accent-cyan-border: var(--smsriver-accent-border);

  --carrier-green: var(--smsriver-status-active);
  --carrier-green-hover: #047857;
  --carrier-green-subtle: var(--smsriver-status-active-subtle);
  --carrier-green-border: var(--smsriver-status-active-border);

  --wire-copper: var(--smsriver-status-warn);
  --wire-copper-subtle: var(--smsriver-status-warn-subtle);
  --wire-copper-border: var(--smsriver-status-warn-border);

  --badge-green: var(--smsriver-status-active);
  --badge-green-subtle: var(--smsriver-status-active-subtle);
  --badge-red-subtle: var(--smsriver-status-error-subtle);

  --mono-font: var(--smsriver-font-mono);
  --sans-font: var(--smsriver-font-sans);
}

/* ==========================================================================
   Global Resets & Rule 38 Canonical Grid Standard
   ========================================================================== */
html {
  font-family: var(--smsriver-font-sans);
  color: var(--smsriver-text-primary);
  background-color: var(--smsriver-bg-canvas);
  -webkit-text-size-adjust: 100%;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  margin: 0;
  padding: 0;
  line-height: 1.5;
  background-color: var(--smsriver-bg-canvas);
  color: var(--smsriver-text-primary);
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

main {
  flex: 1;
}

/* Rule 38: Canonical 1440px Viewport Grid Standard */
.container,
.canonical-container,
.marketing-container {
  max-width: 1440px;
  margin: 0 auto;
  padding: 0 48px;
  box-sizing: border-box;
  width: 100%;
}

@media (max-width: 768px) {
  .container,
  .canonical-container,
  .marketing-container {
    padding: 0 24px;
  }
}

@media (max-width: 480px) {
  .container,
  .canonical-container,
  .marketing-container {
    padding: 0 16px;
  }
}

/* Accessibility: Skip to Content Bypass Link */
.skip-link {
  position: absolute;
  top: -40px;
  left: 16px;
  background: var(--smsriver-accent-primary);
  color: #ffffff;
  padding: 8px 16px;
  border-radius: var(--smsriver-radius-sm);
  font-size: 0.875rem;
  font-weight: 600;
  z-index: 9999;
  text-decoration: none;
  transition: top 0.15s ease-in-out;
}
.skip-link:focus {
  top: 16px;
  outline: 2px solid var(--smsriver-text-primary);
  outline-offset: 2px;
}

/* ==========================================================================
   Sticky 68px Porcelain Header
   ========================================================================== */
header,
.site-header,
.smsriver-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.96);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--smsriver-border-subtle);
  height: 68px;
  transition: border-color 0.15s ease;
}

.header-inner,
.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
  gap: 24px;
}

.brand-link,
.brand-logo,
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--smsriver-text-primary);
  font-weight: 800;
  font-size: 1.15rem;
  letter-spacing: -0.02em;
}

.brand-cluster {
  display: flex;
  align-items: center;
  gap: 8px;
}

.brand-logo-mark,
.brand-mark {
  width: 32px;
  height: 32px;
  background: #ffffff;
  border: 1px solid var(--smsriver-border-subtle);
  color: var(--smsriver-accent-primary);
  border-radius: var(--smsriver-radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--smsriver-shadow-xs);
  flex-shrink: 0;
}

.brand-logo-mark img {
  width: 22px;
  height: 22px;
  object-fit: contain;
}

.brand-text-sms { color: var(--smsriver-text-primary); }
.brand-text-river { color: var(--smsriver-accent-primary); }
.brand-text-tld { color: var(--smsriver-text-muted); font-weight: 600; font-size: 0.92rem; }

.nav-links {
  display: flex;
  align-items: center;
  gap: 4px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-link,
.nav-links a {
  color: var(--smsriver-text-secondary);
  text-decoration: none;
  font-size: 0.88rem;
  font-weight: 500;
  padding: 7px 12px;
  border-radius: var(--smsriver-radius-sm);
  transition: all 0.15s ease;
}
.nav-link:hover,
.nav-links a:hover,
.nav-link.active {
  color: var(--smsriver-text-primary);
  background: var(--smsriver-bg-hover);
}

.header-actions,
.nav-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.nav-login-action {
  color: var(--smsriver-text-secondary);
  text-decoration: none;
  font-size: 0.88rem;
  font-weight: 600;
  padding: 8px 14px;
  border-radius: var(--smsriver-radius-sm);
  transition: color 0.15s ease;
}
.nav-login-action:hover {
  color: var(--smsriver-text-primary);
}

.btn-ghost {
  background: transparent;
  border: 1px solid var(--smsriver-border-subtle);
  color: var(--smsriver-text-primary);
  padding: 8px 16px;
  border-radius: var(--smsriver-radius-sm);
  font-size: 0.875rem;
  font-weight: 600;
  text-decoration: none;
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  cursor: pointer;
  transition: all 0.15s ease;
}
.btn-ghost:hover {
  background: var(--smsriver-bg-hover);
  border-color: var(--smsriver-border-strong);
}

.btn-primary,
.nav-cta-btn {
  background: var(--smsriver-accent-primary);
  color: #ffffff !important;
  border: 1px solid var(--smsriver-accent-primary);
  padding: 8px 18px;
  border-radius: var(--smsriver-radius-sm);
  font-size: 0.875rem;
  font-weight: 600;
  text-decoration: none;
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  cursor: pointer;
  box-shadow: var(--smsriver-shadow-sm);
  transition: background 0.15s ease, border-color 0.15s ease, box-shadow 0.15s ease, transform 0.15s ease;
}
.btn-primary:hover,
.nav-cta-btn:hover {
  background: var(--smsriver-accent-hover);
  border-color: var(--smsriver-accent-hover);
  box-shadow: var(--smsriver-shadow-md);
  transform: translateY(-1px);
}

/* Mobile Navigation */
.mobile-menu-btn,
.mobile-nav-toggle {
  display: none;
  background: #ffffff;
  border: 1px solid var(--smsriver-border-subtle);
  border-radius: var(--smsriver-radius-sm);
  padding: 8px;
  min-height: 44px;
  min-width: 44px;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  color: var(--smsriver-text-secondary);
}

.mobile-login-link { display: none; }

@media (max-width: 960px) {
  .mobile-menu-btn,
  .mobile-nav-toggle { display: inline-flex; }
  .nav-login-action { display: none !important; }
  .mobile-login-link { display: block; }

  nav.nav-links {
    display: none;
    position: absolute;
    top: 68px;
    left: 0;
    right: 0;
    background: #ffffff;
    border-bottom: 1px solid var(--smsriver-border-subtle);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.08);
    padding: 16px 24px;
    flex-direction: column;
    align-items: stretch;
    gap: 8px;
    max-height: calc(100dvh - 68px);
    overflow-y: auto;
  }
  nav.nav-links.active {
    display: flex;
  }
}

/* ==========================================================================
   4-Column Minimalist Footer
   ========================================================================== */
footer,
.site-footer,
.smsriver-footer {
  background: var(--smsriver-bg-elevated);
  border-top: 1px solid var(--smsriver-border-subtle);
  padding: 56px 0 32px;
  margin-top: 56px;
  color: var(--smsriver-text-secondary);
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  flex-wrap: wrap;
  gap: 40px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 48px;
}
@media (max-width: 1024px) {
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 36px; }
}
@media (max-width: 640px) {
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
}

.footer-brand,
.footer-brand-col {
  max-width: 380px;
}

.footer-brand p,
.footer-brand-col p {
  color: var(--smsriver-text-secondary);
  font-size: 0.88rem;
  line-height: 1.6;
  margin: 12px 0 16px;
}

.footer-service-note {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  color: var(--smsriver-text-muted);
  font-size: 0.78rem;
}

.operational-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--smsriver-status-active-subtle);
  border: 1px solid var(--smsriver-status-active-border);
  color: #065f46;
  font-size: 0.78rem;
  font-weight: 600;
  padding: 4px 10px;
  border-radius: var(--smsriver-radius-pill);
}

.status-dot-solid,
.status-beacon-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--smsriver-status-active);
  display: inline-block;
}

.status-beacon {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  font-size: 0.76rem;
  font-family: var(--smsriver-font-mono);
  color: #047857;
  font-weight: 700;
  padding: 5px 12px;
  background: var(--smsriver-status-active-subtle);
  border: 1px solid var(--smsriver-status-active-border);
  border-radius: var(--smsriver-radius-pill);
}

.footer-col-title {
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--smsriver-text-primary);
  margin-bottom: 16px;
}

.footer-col-links,
.footer-links {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-col-links a,
.footer-link {
  color: var(--smsriver-text-muted);
  text-decoration: none;
  font-size: 0.88rem;
  transition: color 0.15s ease;
}
.footer-col-links a:hover,
.footer-link:hover {
  color: var(--smsriver-accent-primary);
}

.footer-bottom {
  padding-top: 28px;
  border-top: 1px solid var(--smsriver-border-subtle);
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
  font-size: 0.82rem;
  color: var(--smsriver-text-muted);
}

.footer-bottom-links {
  display: flex;
  gap: 20px;
  align-items: center;
}
.footer-bottom-links a {
  color: var(--smsriver-text-muted);
  text-decoration: none;
}
.footer-bottom-links a:hover {
  color: var(--smsriver-text-primary);
}

/* ==========================================================================
   Directory Home Single Primary Hero
   ========================================================================== */
.hero-section,
.hero-split-visual {
  padding: 56px 0 44px;
  border-bottom: 1px solid var(--smsriver-border-subtle);
  background: linear-gradient(180deg, #ffffff 0%, var(--smsriver-bg-elevated) 100%);
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.25fr 1fr;
  gap: 48px;
  align-items: center;
}
@media (max-width: 1024px) {
  .hero-grid { grid-template-columns: 1fr; gap: 36px; }
}

.eyebrow-pill,
.hero-badge,
.hero-status-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.8rem;
  font-weight: 600;
  padding: 5px 12px;
  border-radius: var(--smsriver-radius-pill);
  background: #ffffff;
  color: var(--smsriver-text-secondary);
  border: 1px solid var(--smsriver-border-subtle);
  margin-bottom: 18px;
  box-shadow: var(--smsriver-shadow-xs);
}

.hero-title,
.directory-hero-title {
  font-size: clamp(2.2rem, 5vw, 3rem);
  font-weight: 800;
  letter-spacing: -0.035em;
  line-height: 1.12;
  color: var(--smsriver-text-primary);
  margin-bottom: 16px;
}
.hero-title span,
.directory-hero-title span {
  color: var(--smsriver-accent-primary);
}

.hero-subhead,
.hero-subtitle {
  font-size: 1.05rem;
  color: var(--smsriver-text-secondary);
  line-height: 1.6;
  max-width: 58ch;
  margin-bottom: 24px;
}

.hero-search-box,
.hero-search-wrapper {
  position: relative;
  max-width: 580px;
  width: 100%;
}

.country-shortcuts,
.home-country-shortcuts {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  align-items: center;
  margin-top: 14px;
}

.quick-pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: #ffffff;
  border: 1px solid var(--smsriver-border-subtle);
  color: var(--smsriver-text-secondary);
  padding: 5px 12px;
  border-radius: var(--smsriver-radius-sm);
  font-size: 0.82rem;
  font-weight: 600;
  text-decoration: none;
  transition: all 0.15s ease;
}
.quick-pill:hover,
.quick-pill.active {
  background: var(--smsriver-bg-hover);
  border-color: var(--smsriver-border-strong);
  color: var(--smsriver-text-primary);
}

/* Hero Right Column Live Preview */
.live-preview-card,
.hero-dispatcher-card {
  background: #ffffff;
  border: 1px solid var(--smsriver-border-subtle);
  border-radius: var(--smsriver-radius-lg);
  box-shadow: var(--smsriver-shadow-sm);
  overflow: hidden;
  padding: 24px;
}

.preview-msg-list {
  list-style: none;
  margin: 0;
  padding: 0;
}
.preview-msg-item {
  padding: 12px 0;
  border-bottom: 1px solid var(--smsriver-border-subtle);
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.preview-msg-item:last-child {
  border-bottom: none;
}

.otp-pill,
.otp-chip {
  background: var(--smsriver-status-active-subtle);
  border: 1px solid var(--smsriver-status-active-border);
  color: #065f46;
  font-family: var(--smsriver-font-mono);
  font-weight: 800;
  font-size: 0.82rem;
  padding: 2px 8px;
  border-radius: var(--smsriver-radius-sm);
  display: inline-flex;
  align-items: center;
  gap: 4px;
  letter-spacing: 0.04em;
  font-variant-numeric: tabular-nums;
}

/* ==========================================================================
   Live Verification Stream Waterfall
   ========================================================================== */
.live-stream-panel {
  background: var(--smsriver-bg-surface);
  border: 1px solid var(--smsriver-border-subtle);
  border-radius: var(--smsriver-radius-lg);
  box-shadow: var(--smsriver-shadow-sm);
  margin-bottom: 40px;
  overflow: hidden;
}
.live-stream-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 16px 24px;
  background: var(--smsriver-bg-elevated);
  border-bottom: 1px solid var(--smsriver-border-subtle);
}
.live-stream-title {
  font-size: 0.88rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--smsriver-text-primary);
  display: flex;
  align-items: center;
  gap: 8px;
}
.live-indicator-dot,
.online-indicator-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--smsriver-status-active);
  display: inline-block;
}

.live-message-row,
.inbox-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 24px;
  border-bottom: 1px solid var(--smsriver-border-subtle);
  transition: background 0.15s ease;
  gap: 16px;
}
.live-message-row:hover,
.inbox-row:hover {
  background: #fafafa;
}
.live-message-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  font-family: var(--smsriver-font-mono);
  font-size: 0.85rem;
}
.live-message-number {
  font-weight: 700;
  color: var(--smsriver-text-primary);
}
.live-message-body {
  flex: 1;
  font-size: 0.88rem;
  color: var(--smsriver-text-secondary);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* ==========================================================================
   Minimalist B2B Number Cards (Cotton: number_card.html)
   ========================================================================== */
.number-grid,
.numbers-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 20px;
  margin-bottom: 48px;
}

.number-card-item,
.number-card {
  background: var(--smsriver-bg-surface);
  border: 1px solid var(--smsriver-border-subtle);
  border-radius: var(--smsriver-radius-md);
  padding: 22px 24px;
  box-shadow: var(--smsriver-shadow-sm);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  position: relative;
  transition: border-color 0.15s, box-shadow 0.15s, transform 0.15s;
}
.number-card-item:hover,
.number-card:hover {
  border-color: var(--smsriver-border-strong);
  box-shadow: var(--smsriver-shadow-md);
  transform: translateY(-1px);
}

.number-card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 12px;
  gap: 8px;
}
.number-card-number-row,
.number-digits {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  margin-bottom: 14px;
  font-size: 1.25rem;
  font-weight: 800;
  font-family: var(--smsriver-font-mono);
  font-variant-numeric: tabular-nums;
  letter-spacing: -0.01em;
  color: var(--smsriver-text-primary);
}

.country-char-code {
  color: var(--smsriver-accent-primary);
  font-weight: 800;
  margin-right: 6px;
}

.number-action-btn,
.btn-view-inbox {
  background: var(--smsriver-bg-canvas);
  border: 1px solid var(--smsriver-border-subtle);
  color: var(--smsriver-text-primary);
  padding: 10px 16px;
  border-radius: var(--smsriver-radius-md);
  font-size: 0.88rem;
  font-weight: 600;
  text-decoration: none;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 44px;
  transition: all 0.15s ease;
}
.number-action-btn:hover,
.btn-view-inbox:hover {
  background: var(--smsriver-accent-primary);
  border-color: var(--smsriver-accent-primary);
  color: #ffffff !important;
}

.number-action-btn-offline {
  opacity: 0.75;
}

.btn-copy,
.btn-copy-num,
.btn-copy-sm {
  background: #ffffff;
  border: 1px solid var(--smsriver-border-subtle);
  color: var(--smsriver-text-secondary);
  padding: 6px 12px;
  border-radius: var(--smsriver-radius-sm);
  font-size: 0.8rem;
  font-weight: 600;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  min-height: 44px;
  min-width: 44px;
  transition: all 0.15s;
}
.btn-copy:hover,
.btn-copy-num:hover,
.btn-copy-sm:hover {
  border-color: var(--smsriver-accent-primary);
  color: var(--smsriver-accent-primary);
}

/* ==========================================================================
   Stripe-Grade Pricing Grid & Cards
   ========================================================================== */
.pricing-section {
  padding: 48px 0 64px;
}
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  margin-bottom: 48px;
}
@media (max-width: 1080px) {
  .pricing-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 640px) {
  .pricing-grid { grid-template-columns: 1fr; }
}

.pricing-card {
  background: var(--smsriver-bg-surface);
  border: 1px solid var(--smsriver-border-subtle);
  border-radius: var(--smsriver-radius-lg);
  padding: 32px 24px;
  box-shadow: var(--smsriver-shadow-sm);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  position: relative;
  transition: border-color 0.15s, box-shadow 0.15s, transform 0.15s;
}
.pricing-card:hover {
  border-color: var(--smsriver-border-strong);
  box-shadow: var(--smsriver-shadow-md);
  transform: translateY(-2px);
}
.pricing-card-featured {
  border: 2px solid var(--smsriver-accent-primary) !important;
  box-shadow: 0 4px 14px rgba(37, 99, 235, 0.08) !important;
}

.tier-featured-pill {
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--smsriver-accent-primary);
  color: #ffffff;
  font-size: 0.72rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  padding: 4px 12px;
  border-radius: var(--smsriver-radius-pill);
  z-index: 10;
}

.tier-name {
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--smsriver-text-primary);
  margin-bottom: 6px;
}
.tier-price-row {
  display: flex;
  align-items: baseline;
  gap: 6px;
  margin: 16px 0 24px;
  padding-bottom: 18px;
  border-bottom: 1px solid var(--smsriver-border-subtle);
}
.tier-price-val {
  font-size: 2.4rem;
  font-weight: 900;
  font-family: var(--smsriver-font-mono);
  line-height: 1;
  color: var(--smsriver-text-primary);
  font-variant-numeric: tabular-nums;
}
.tier-features,
.feature-list {
  list-style: none;
  margin: 0 0 28px;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.tier-feature-item,
.feature-list li {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  font-size: 0.86rem;
  color: var(--smsriver-text-secondary);
  line-height: 1.45;
}

.tier-btn-primary {
  width: 100%;
  text-align: center;
  background: var(--smsriver-accent-primary);
  color: #ffffff !important;
  border: 1px solid var(--smsriver-accent-primary);
  padding: 12px 18px;
  border-radius: var(--smsriver-radius-sm);
  font-weight: 800;
  cursor: pointer;
  font-size: 0.88rem;
  transition: all 0.15s ease;
  box-shadow: var(--smsriver-shadow-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
  min-height: 44px;
  box-sizing: border-box;
}
.tier-btn-primary:hover {
  background: var(--smsriver-accent-hover);
  border-color: var(--smsriver-accent-hover);
  box-shadow: var(--smsriver-shadow-md);
  transform: translateY(-1px);
}

.tier-btn-secondary {
  width: 100%;
  text-align: center;
  background: var(--smsriver-bg-elevated);
  color: var(--smsriver-text-primary);
  border: 1px solid var(--smsriver-border-strong);
  padding: 12px 18px;
  border-radius: var(--smsriver-radius-sm);
  font-weight: 700;
  cursor: pointer;
  font-size: 0.88rem;
  transition: all 0.15s ease;
  display: flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
  min-height: 44px;
  box-sizing: border-box;
}
.tier-btn-secondary:hover {
  background: var(--smsriver-bg-hover);
  border-color: var(--smsriver-border-strong);
  color: var(--smsriver-accent-primary);
}

.addons-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 16px;
}

.pricing-comparison-scroll {
  max-width: 100%;
  overflow-x: auto;
  overscroll-behavior-inline: contain;
}

/* Pricing Plan Matrix Panel */
.pricing-matrix-panel {
  background: var(--smsriver-bg-surface);
  border: 1px solid var(--smsriver-border-subtle);
  border-radius: var(--smsriver-radius-lg);
  overflow: hidden;
  margin-bottom: 48px;
  box-shadow: var(--smsriver-shadow-sm);
}
.pricing-matrix-header {
  padding: 20px 24px;
  border-bottom: 1px solid var(--smsriver-border-subtle);
  background: var(--smsriver-bg-surface);
}
.pricing-matrix-title {
  font-size: 1.25rem;
  font-weight: 800;
  margin: 0;
  color: var(--smsriver-text-primary);
  font-family: var(--smsriver-font-sans);
}
.comparison-table {
  width: 100%;
  border-collapse: collapse;
}
.comparison-table th,
.comparison-table td {
  padding: 14px 18px;
  font-family: var(--smsriver-font-sans);
  font-size: 0.88rem;
  border-bottom: 1px solid var(--smsriver-border-subtle);
  text-align: left;
}
.comparison-table th[scope="row"] {
  font-weight: 700;
  color: var(--smsriver-text-primary);
}
.comparison-table th[scope="col"] {
  font-weight: 800;
  color: var(--smsriver-text-primary);
  background: var(--smsriver-bg-elevated);
}
.comparison-col-featured {
  color: var(--smsriver-accent-primary) !important;
  background: var(--smsriver-accent-subtle) !important;
  border-bottom-color: var(--smsriver-accent-border) !important;
  font-weight: 700 !important;
}

/* ==========================================================================
   Interactive Developer Utility Layouts (Split Workbench)
   ========================================================================== */
.tool-workspace-split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  margin-bottom: 48px;
}
@media (max-width: 900px) {
  .tool-workspace-split { grid-template-columns: 1fr; }
}

.tool-card {
  background: var(--smsriver-bg-surface);
  border: 1px solid var(--smsriver-border-subtle);
  border-radius: var(--smsriver-radius-lg);
  padding: 28px 30px;
  box-shadow: var(--smsriver-shadow-sm);
}

.tool-switcher-nav {
  display: flex;
  gap: 8px;
  border-bottom: 1px solid var(--smsriver-border-subtle);
  margin-bottom: 32px;
  overflow-x: auto;
}
.tool-switcher-tab {
  background: transparent;
  border: none;
  border-bottom: 2px solid transparent;
  color: var(--smsriver-text-secondary);
  font-family: var(--smsriver-font-sans);
  font-size: 0.92rem;
  font-weight: 600;
  padding: 12px 16px;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  white-space: nowrap;
  transition: all 0.15s ease;
}
.tool-switcher-tab:hover {
  color: var(--smsriver-text-primary);
}
.tool-switcher-tab.active {
  color: var(--smsriver-accent-primary);
  border-bottom-color: var(--smsriver-accent-primary);
}

.smsriver-code-input {
  font-family: var(--smsriver-font-mono);
  font-size: 0.9rem;
}
.smsriver-code-input::placeholder,
#payload_json::placeholder,
#sms_text::placeholder,
#phone-input::placeholder {
  color: #526071;
  opacity: 1;
}

/* ==========================================================================
   Benchmark Scorecards & Comparison Tables (Cotton: benchmark_card.html)
   ========================================================================== */
.benchmark-scorecards-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  margin-bottom: 36px;
}
@media (max-width: 768px) {
  .benchmark-scorecards-grid { grid-template-columns: 1fr; }
}

.benchmark-card,
.benchmark-scorecard-card {
  background: var(--smsriver-bg-surface);
  border: 1px solid var(--smsriver-border-subtle);
  border-radius: var(--smsriver-radius-lg);
  padding: 28px;
  box-shadow: var(--smsriver-shadow-sm);
  position: relative;
}
.benchmark-card.winner,
.benchmark-scorecard-card.winner {
  border: 2px solid var(--smsriver-accent-primary);
  box-shadow: 0 4px 12px rgba(37, 99, 235, 0.08);
}
.winner-badge-anchor {
  position: absolute;
  top: -12px;
  left: 24px;
  background: var(--smsriver-status-active);
  color: #ffffff;
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  padding: 3px 10px;
  border-radius: var(--smsriver-radius-pill);
}

.comparison-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.88rem;
  text-align: left;
}
.comparison-table th,
.comparison-table td {
  padding: 14px 18px;
  border-bottom: 1px solid var(--smsriver-border-subtle);
}
.comparison-table thead tr {
  background: var(--smsriver-bg-elevated);
  font-family: var(--smsriver-font-mono);
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--smsriver-text-muted);
}
.comparison-table tr:hover td {
  background: var(--smsriver-bg-hover);
}

/* ==========================================================================
   Breadcrumbs & Protocol Strips
   ========================================================================== */
.breadcrumbs-bar {
  padding: 24px 0 16px;
}
.breadcrumbs-list {
  display: flex;
  align-items: center;
  gap: 8px;
  list-style: none;
  margin: 0;
  padding: 0;
  font-size: 0.84rem;
  color: var(--smsriver-text-muted);
}
.breadcrumbs-item a {
  color: var(--smsriver-text-secondary);
  text-decoration: none;
}
.breadcrumbs-item a:hover {
  color: var(--smsriver-accent-primary);
}
.breadcrumbs-separator {
  color: var(--smsriver-border-strong);
}
.breadcrumbs-current {
  color: var(--smsriver-text-primary);
  font-weight: 600;
}

.protocol-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 16px;
}
.protocol-card {
  background: var(--smsriver-bg-surface);
  border: 1px solid var(--smsriver-border-subtle);
  border-radius: var(--smsriver-radius-md);
  padding: 20px 22px;
  display: flex;
  gap: 16px;
  box-shadow: var(--smsriver-shadow-sm);
}
.protocol-step-num {
  width: 32px;
  height: 32px;
  border-radius: var(--smsriver-radius-sm);
  background: var(--smsriver-accent-subtle);
  border: 1px solid var(--smsriver-accent-border);
  color: var(--smsriver-accent-primary);
  font-family: var(--smsriver-font-mono);
  font-weight: 800;
  font-size: 0.85rem;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

/* ==========================================================================
   Advisories & Security Warnings
   ========================================================================== */
.security-advisory {
  background: var(--smsriver-bg-elevated);
  border: 1px solid var(--smsriver-border-subtle);
  border-left: 4px solid var(--smsriver-accent-primary);
  border-radius: var(--smsriver-radius-md);
  padding: 24px 28px;
  display: flex;
  gap: 18px;
  align-items: flex-start;
  margin-bottom: 48px;
}
.threat-alert-box {
  background: var(--smsriver-status-error-subtle);
  border: 1px solid var(--smsriver-status-error-border);
  border-radius: var(--smsriver-radius-md);
  padding: 24px 28px;
  margin-bottom: 28px;
}
.threat-list {
  padding-left: 20px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  color: var(--smsriver-text-primary);
  font-size: 0.88rem;
}

.smsriver-guide-header {
  margin-bottom: 32px;
  max-width: 800px;
}
.smsriver-guide-title {
  font-size: clamp(2rem, 5vw, 2.5rem);
  font-weight: 800;
  letter-spacing: -0.035em;
  margin-bottom: 10px;
  color: var(--smsriver-text-primary);
  line-height: 1.15;
}
.smsriver-guide-content {
  margin-bottom: 32px;
  max-width: 72ch;
}
.smsriver-guide-copy {
  color: var(--smsriver-text-secondary);
  font-size: 0.95rem;
  line-height: 1.65;
}

/* ==========================================================================
   Badges, Toast & Modal Packet Inspector
   ========================================================================== */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 3px 8px;
  border-radius: var(--smsriver-radius-sm);
  font-size: 0.74rem;
  font-weight: 700;
  font-family: var(--smsriver-font-sans);
  letter-spacing: 0.03em;
  text-transform: uppercase;
}
.badge-native,
.badge-success {
  background: var(--smsriver-status-active-subtle);
  color: #047857;
  border: 1px solid var(--smsriver-status-active-border);
}
.badge-aggregated,
.badge-info {
  background: var(--smsriver-accent-subtle);
  color: #0369a1;
  border: 1px solid var(--smsriver-accent-border);
}
.badge-green { background: var(--smsriver-status-active-subtle); color: #047857; border: 1px solid var(--smsriver-status-active-border); }
.badge-amber,
.badge-warning { background: var(--smsriver-status-warn-subtle); color: #9a3412; border: 1px solid var(--smsriver-status-warn-border); }
.badge-red,
.badge-error { background: var(--smsriver-status-error-subtle); color: #b91c1c; border: 1px solid rgba(220, 38, 38, 0.25); }
.badge-gray { background: #f1f5f9; color: #334155; border: 1px solid var(--smsriver-border-subtle); }

#global-toast {
  position: fixed;
  bottom: 24px;
  right: 24px;
  background: #09090b;
  color: #ffffff;
  padding: 10px 16px;
  border-radius: var(--smsriver-radius-sm);
  font-size: 0.82rem;
  font-weight: 600;
  font-family: var(--smsriver-font-sans);
  box-shadow: var(--smsriver-shadow-lg);
  display: none;
  z-index: 1000;
  align-items: center;
  gap: 8px;
}
@media (max-width: 640px) {
  #global-toast {
    left: 16px;
    right: 16px;
    bottom: 16px;
    justify-content: center;
    text-align: center;
  }
}

#packet-inspector-modal {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(15, 23, 42, 0.6);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  z-index: 1000;
  align-items: center;
  justify-content: center;
  padding: 20px;
}
#packet-inspector-modal.active {
  display: flex;
}
.inspector-dialog {
  background: #ffffff;
  border: 1px solid var(--smsriver-border-subtle);
  border-radius: var(--smsriver-radius-lg);
  max-width: 580px;
  width: 100%;
  padding: 28px;
  box-shadow: var(--smsriver-shadow-xl);
  position: relative;
}
.inspector-close-btn {
  position: absolute;
  top: 14px;
  right: 14px;
  background: #f1f5f9;
  border: 1px solid var(--smsriver-border-subtle);
  border-radius: var(--smsriver-radius-sm);
  width: 44px;
  height: 44px;
  min-width: 44px;
  min-height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  color: var(--smsriver-text-secondary);
  transition: all 0.15s ease;
}
.inspector-close-btn:hover {
  color: var(--smsriver-text-primary);
  background: #e2e8f0;
}
.inspector-close-btn:focus-visible {
  outline: 2px solid var(--smsriver-accent-primary);
  outline-offset: 2px;
}

/* Auth & Dashboard Helpers */
.auth-page {
  padding-top: clamp(40px, 7vw, 88px);
  padding-bottom: clamp(56px, 8vw, 104px);
}
.auth-panel { width: 100%; max-width: 440px; margin: 0 auto; }
.auth-panel-wide { max-width: 480px; }
.auth-heading { display: flex; flex-direction: column; align-items: center; text-align: center; gap: 10px; margin-bottom: 28px; }
.auth-icon { width: 48px; height: 48px; display: grid; place-items: center; border-radius: 14px; color: var(--smsriver-accent-primary); background: #fff; border: 1px solid var(--smsriver-border-subtle); box-shadow: var(--smsriver-shadow-sm); margin-bottom: 4px; }
.auth-eyebrow { color: var(--smsriver-accent-primary); font-size: .72rem; font-weight: 800; letter-spacing: .12em; text-transform: uppercase; }
.auth-heading h1 { color: var(--smsriver-text-primary); font-size: clamp(1.65rem, 5vw, 2rem); font-weight: 800; letter-spacing: -.04em; line-height: 1.15; }
.auth-heading > p:last-of-type { color: var(--smsriver-text-secondary); font-size: .94rem; line-height: 1.55; max-width: 38ch; }
.auth-card { display: block; padding: clamp(22px, 5vw, 32px); background: #fff; border: 1px solid var(--smsriver-border-strong); border-radius: var(--smsriver-radius-lg); box-shadow: var(--smsriver-shadow-md); }
.auth-form { display: grid; gap: 20px; }
.auth-field { display: grid; gap: 7px; }
.auth-field label { color: var(--smsriver-text-primary); font-size: .86rem; font-weight: 700; }
.auth-input { width: 100%; min-height: 48px; color: var(--smsriver-text-primary); background: #fff; border: 1px solid var(--smsriver-border-strong); border-radius: var(--smsriver-radius-sm); font: 400 .96rem var(--smsriver-font-sans); }
.auth-input:focus { border-color: var(--smsriver-accent-primary); outline: 3px solid rgba(37, 99, 235, .14); outline-offset: 0; }
.auth-submit { min-height: 48px; margin-top: 2px; border-radius: var(--smsriver-radius-sm); font-size: .94rem; font-weight: 750; }
.auth-switch { margin-top: 24px; padding-top: 20px; border-top: 1px solid var(--smsriver-border-subtle); text-align: center; color: var(--smsriver-text-secondary); font-size: .88rem; line-height: 1.6; }
.auth-switch a { color: var(--smsriver-accent-primary); font-weight: 750; text-underline-offset: 3px; }
.auth-back-link { display: block; width: fit-content; margin: 20px auto 0; color: var(--smsriver-text-muted); font-size: .84rem; font-weight: 650; text-decoration: none; }
.auth-back-link:hover { color: var(--smsriver-accent-primary); text-decoration: underline; text-underline-offset: 3px; }

.dashboard-table-wrap { width: 100%; overflow-x: auto; overscroll-behavior-inline: contain; }
.dashboard-table-wrap table { min-width: 620px; }
.data-table-scroll { max-width: 100%; overflow-x: auto; overscroll-behavior-inline: contain; }
.data-table-scroll table { min-width: 640px; }
.dashboard-inline-form { display: flex; align-items: end; flex-wrap: wrap; gap: 10px; }
.dashboard-inline-form label { display: grid; gap: 6px; color: var(--smsriver-text-secondary); font-size: .78rem; font-weight: 700; }
.dashboard-inline-form input { min-height: 42px; width: min(100%, 260px); padding: 8px 12px; border: 1px solid var(--smsriver-border-strong); border-radius: var(--smsriver-radius-sm); background: #fff; color: var(--smsriver-text-primary); font: inherit; }
.dashboard-inline-form button { min-height: 42px; }
.dashboard-section-heading { min-width: min(100%, 320px); }
@media (max-width: 640px) {
  .auth-page { padding-top: 36px; padding-bottom: 56px; }
  .auth-heading { margin-bottom: 22px; }
  .auth-card { border-radius: var(--smsriver-radius-md); }
  .dashboard-inline-form { width: 100%; align-items: stretch; }
  .dashboard-inline-form label { flex: 1 1 100%; }
  .dashboard-inline-form input, .dashboard-inline-form button { width: 100%; }
}

/* pSEO Country Inventory Responsive Rules */
.pseo-country-header {
  margin-bottom: 32px;
  max-width: 800px;
}
.pseo-country-title {
  font-size: clamp(2rem, 5vw, 2.4rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  margin-bottom: 8px;
  color: var(--smsriver-text-primary);
  line-height: 1.15;
}
.pseo-country-steps {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 14px;
}
.pseo-country-inventory-heading {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 18px;
}
.pseo-country-number-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 16px;
}
@media (max-width: 640px) {
  .pseo-country-header { margin-bottom: 24px; }
  .pseo-country-steps { grid-template-columns: minmax(0, 1fr); }
  .pseo-country-inventory-heading { align-items: flex-start; flex-direction: column; gap: 8px; }
  .pseo-country-number-grid { grid-template-columns: minmax(0, 1fr); }
}

/* pSEO Hub Directory Grid & Cards */
.hub-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(min(100%, 280px), 1fr));
  gap: 20px;
  margin-top: 28px;
  margin-bottom: 48px;
}
.hub-card {
  background: var(--smsriver-bg-surface);
  border: 1px solid var(--smsriver-border-subtle);
  border-radius: var(--smsriver-radius-lg);
  padding: 24px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: all 0.15s ease;
  box-shadow: var(--smsriver-shadow-sm);
  text-decoration: none;
}
.hub-card:hover {
  transform: translateY(-2px);
  border-color: var(--smsriver-accent-border);
  background: var(--smsriver-bg-elevated);
  box-shadow: var(--smsriver-shadow-md);
}
.hub-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 14px;
}
.hub-card-icon-wrap {
  width: 38px;
  height: 38px;
  border-radius: var(--smsriver-radius-sm);
  background: var(--smsriver-bg-elevated);
  border: 1px solid var(--smsriver-accent-border);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--smsriver-accent-primary);
}
.hub-card-title {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--smsriver-text-primary);
  margin-bottom: 8px;
  line-height: 1.3;
}
.hub-card-desc {
  color: var(--smsriver-text-secondary);
  font-size: 0.88rem;
  line-height: 1.55;
  margin-bottom: 18px;
  flex-grow: 1;
}
.hub-card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 14px;
  border-top: 1px solid var(--smsriver-border-subtle);
  color: var(--smsriver-accent-primary);
  font-size: 0.82rem;
  font-family: var(--smsriver-font-mono);
  font-weight: 700;
}

/* ==========================================================================
   Telemetry & Status LED
   ========================================================================== */
.telecom-status-led {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--smsriver-status-active, #059669);
  display: inline-block;
  flex-shrink: 0;
  position: relative;
}

/* Code & Input Placeholders */
.smsriver-code-input::placeholder,
#payload_json::placeholder,
#sms_text::placeholder,
#phone-input::placeholder,
.auth-input::placeholder {
  color: var(--smsriver-text-subtle);
}

/* Icon & Clipboard Copy States */
.icon {
  display: inline-block;
  width: 1em;
  height: 1em;
  stroke-width: 0;
  stroke: currentColor;
  fill: currentColor;
  vertical-align: -0.125em;
}
.btn-copy.btn-copied {
  background: var(--smsriver-status-active-subtle);
  color: var(--smsriver-status-active);
  border-color: var(--smsriver-status-active-border);
}

/* Status Beacon */
.status-beacon {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  font-size: 0.76rem;
  font-family: var(--smsriver-font-mono);
  color: #047857;
  font-weight: 700;
  padding: 5px 12px;
  background: var(--smsriver-status-active-subtle);
  border: 1px solid var(--smsriver-status-active-border);
  border-radius: var(--smsriver-radius-pill);
}
.status-beacon-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--smsriver-status-active);
  animation: pulse 2s infinite;
}

/* Footer & Step Flows */
.footer-links-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}
@media (max-width: 640px) {
  .footer-links-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
  }
}
@media (max-width: 480px) {
  .footer-links-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }
}

.steps-flow-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}
@media (max-width: 768px) {
  .steps-flow-grid {
    grid-template-columns: 1fr;
  }
}
.step-box {
  background: var(--smsriver-bg-surface);
  border: 1px solid var(--smsriver-border-subtle);
  border-radius: var(--smsriver-radius-md);
  padding: 20px;
  transition: transform 0.15s ease, border-color 0.15s ease;
}
.step-box:hover {
  transform: translateY(-2px);
  border-color: var(--smsriver-border-strong);
}

/* Number Action Button Variations */
.number-action-btn-native {
  background: var(--smsriver-status-active-subtle);
  color: #047857;
  border: 1px solid var(--smsriver-status-active-border);
}
.number-action-btn-native:hover {
  background: rgba(5, 150, 105, 0.15);
  border-color: var(--smsriver-status-active);
  color: #047857;
}
.number-action-btn-offline {
  background: var(--smsriver-bg-elevated);
  color: var(--smsriver-text-secondary);
  border-color: var(--smsriver-border-subtle);
}

/* Auth Helpers */
.auth-plan-badge { margin-top: 4px; }
.auth-error { margin-bottom: 16px; }
.auth-optional { margin-left: 4px; color: var(--smsriver-text-muted); font-size: .77rem; font-weight: 500; }
.auth-help { color: var(--smsriver-text-muted); font-size: .8rem; line-height: 1.45; }

/* Pricing Page Utility Classes */
.pricing-hero-title {
  font-size: clamp(2.2rem, 5vw, 2.85rem);
  font-weight: 800;
  letter-spacing: -0.035em;
  margin-bottom: 14px;
  line-height: 1.15;
  color: var(--smsriver-text-primary);
  font-family: var(--smsriver-font-sans);
}
.pricing-portal-callout {
  background: var(--smsriver-bg-elevated);
  border: 1px solid var(--smsriver-border-subtle);
  border-radius: var(--smsriver-radius-lg);
  padding: 18px 24px;
  margin-bottom: 40px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
}
.pricing-addon-card {
  border: 1px solid var(--smsriver-border-subtle);
  border-radius: var(--smsriver-radius-md);
  padding: 22px 20px;
  background: #ffffff;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  box-shadow: var(--smsriver-shadow-sm);
  gap: 16px;
  transition: all 0.2s ease;
}
.pricing-addon-card:hover {
  border-color: var(--smsriver-border-strong);
  transform: translateY(-2px);
  box-shadow: var(--smsriver-shadow-md);
}

/* Directory Metrics Strip */
.directory-metrics-strip {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 16px;
  margin-bottom: 32px;
}
.metric-card-box {
  background: #ffffff;
  border: 1px solid var(--smsriver-border-subtle);
  border-radius: var(--smsriver-radius-md);
  box-shadow: var(--smsriver-shadow-sm);
  padding: 20px 22px;
  display: flex;
  align-items: center;
  gap: 16px;
}
.metric-card-icon {
  width: 44px;
  height: 44px;
  border-radius: var(--smsriver-radius-sm);
  background: var(--smsriver-accent-subtle);
  border: 1px solid var(--smsriver-accent-border);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--smsriver-accent-primary);
  flex-shrink: 0;
}
.metric-card-icon-green {
  background: var(--smsriver-status-active-subtle);
  border-color: var(--smsriver-status-active-border);
  color: var(--smsriver-status-active);
}
.metric-card-val {
  font-size: 1.75rem;
  font-weight: 900;
  font-family: var(--smsriver-font-sans);
  color: var(--smsriver-text-primary);
  line-height: 1;
  letter-spacing: -0.03em;
}
.metric-card-val-green {
  font-size: 1.25rem;
  font-weight: 850;
  color: #047857;
  line-height: 1.15;
  letter-spacing: -0.02em;
}
.metric-card-lbl {
  font-size: 0.84rem;
  color: var(--smsriver-text-secondary);
  margin-top: 4px;
  font-weight: 600;
}

/* Switchboard Console Toolbar */
.switchboard-toolbar {
  background: #ffffff;
  border: 1px solid var(--smsriver-border-subtle);
  border-radius: var(--smsriver-radius-md);
  padding: 16px 20px;
  box-shadow: var(--smsriver-shadow-xs);
  margin-bottom: 24px;
}
.switchboard-controls {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 14px;
  margin-bottom: 14px;
}
.switchboard-region-tabs {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  background: var(--smsriver-bg-elevated);
  border: 1px solid var(--smsriver-border-subtle);
  padding: 4px;
  border-radius: var(--smsriver-radius-pill);
  flex-wrap: wrap;
}
.switchboard-search-input {
  width: 100%;
  padding: 8px 12px 8px 34px;
  background: var(--smsriver-bg-elevated);
  border: 1px solid var(--smsriver-border-subtle);
  border-radius: var(--smsriver-radius-pill);
  font-size: 0.84rem;
  font-family: var(--smsriver-font-sans);
  color: var(--smsriver-text-primary);
  outline: none;
  min-height: 44px;
  box-sizing: border-box;
  transition: border-color 0.15s ease, background 0.15s ease;
}
.switchboard-search-input:focus {
  border-color: var(--smsriver-accent-primary);
  background: #ffffff;
}

/* Developer Integration Platform Grid */
.developer-platform-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 20px;
  margin-top: 24px;
}
.dev-integration-card {
  background: var(--smsriver-bg-elevated);
  border: 1px solid var(--smsriver-border-subtle);
  border-radius: var(--smsriver-radius-md);
  padding: 24px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: border-color 0.15s, box-shadow 0.15s;
}
.dev-integration-card:hover {
  border-color: var(--smsriver-border-strong);
  box-shadow: var(--smsriver-shadow-sm);
}

/* Animations */
@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}

/* Country Groups & Directory Listings */
.country-pool-section {
  margin-bottom: 36px;
}
.country-header-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 16px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--smsriver-border-subtle);
}
.country-header-meta {
  display: flex;
  align-items: center;
  gap: 10px;
}
.country-flag-icon {
  width: 24px;
  height: 16px;
  border-radius: 2px;
  box-shadow: 0 0 0 1px rgba(0, 0, 0, 0.08);
  flex-shrink: 0;
}
.country-flag-code {
  font-family: var(--smsriver-font-mono);
  font-weight: 800;
  font-size: 0.8rem;
  background: var(--smsriver-bg-elevated);
  color: var(--smsriver-accent-primary);
  padding: 3px 6px;
  border-radius: var(--smsriver-radius-sm);
  border: 1px solid var(--smsriver-border-subtle);
}
.country-header-name {
  font-weight: 800;
  font-size: 1.05rem;
  color: var(--smsriver-text-primary);
}
.country-header-dial {
  font-family: var(--smsriver-font-mono);
  font-size: 0.84rem;
  color: var(--smsriver-accent-primary);
  margin-left: 8px;
}
.country-header-actions {
  display: flex;
  align-items: center;
  gap: 8px;
}
.btn-toggle-see-more {
  background: var(--smsriver-bg-elevated);
  border: 1px solid var(--smsriver-border-subtle);
  color: var(--smsriver-text-secondary);
  padding: 6px 14px;
  border-radius: var(--smsriver-radius-pill);
  font-size: 0.82rem;
  font-family: var(--smsriver-font-sans);
  font-weight: 600;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: all 0.15s ease;
  min-height: 36px;
}
.btn-toggle-see-more:hover {
  background: #ffffff;
  color: var(--smsriver-text-primary);
  border-color: var(--smsriver-border-strong);
}
.toggle-icon {
  width: 12px;
  height: 12px;
  transition: transform 0.2s ease;
}
.country-header-link {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 6px 14px;
  border-radius: var(--smsriver-radius-pill);
  background: var(--smsriver-accent-subtle);
  border: 1px solid var(--smsriver-accent-border);
  color: var(--smsriver-accent-primary);
  font-size: 0.82rem;
  font-family: var(--smsriver-font-sans);
  font-weight: 700;
  text-decoration: none;
  min-height: 36px;
  transition: background 0.15s, border-color 0.15s;
}
.country-header-link:hover {
  background: #ffffff;
  border-color: var(--smsriver-accent-primary);
}
.numbers-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 14px;
}
.remaining-numbers-panel {
  display: none;
  margin-top: 14px;
  padding-top: 14px;
  border-top: 1px dashed var(--smsriver-border-subtle);
}
.country-directory-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--smsriver-accent-primary);
  font-family: var(--smsriver-font-sans);
  font-weight: 700;
  font-size: 0.88rem;
  text-decoration: none;
}
.country-directory-link:hover {
  text-decoration: underline;
}
.country-empty-panel {
  padding: 44px;
  background: var(--smsriver-bg-elevated);
  border: 1px dashed var(--smsriver-border-subtle);
  border-radius: var(--smsriver-radius-lg);
  text-align: center;
  color: var(--smsriver-text-muted);
}
.country-empty-title {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--smsriver-text-primary);
  margin-bottom: 6px;
}
.country-empty-text {
  font-size: 0.88rem;
  margin-bottom: 18px;
  color: var(--smsriver-text-secondary);
}

/* Live Stream Section & Inbound Waterfall */
.section-live-inbox {
  padding: 56px 0;
}
.live-inbox-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
  margin-bottom: 20px;
}
.service-filter-tabs {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 16px;
}
.filter-tab-btn {
  background: var(--smsriver-bg-elevated);
  border: 1px solid var(--smsriver-border-subtle);
  color: var(--smsriver-text-secondary);
  padding: 6px 14px;
  border-radius: var(--smsriver-radius-pill);
  font-size: 0.82rem;
  font-weight: 600;
  font-family: var(--smsriver-font-sans);
  cursor: pointer;
  transition: all 0.15s ease;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  min-height: 44px;
}
.filter-tab-btn:hover,
.filter-tab-btn.active {
  background: var(--smsriver-accent-subtle);
  color: var(--smsriver-accent-primary);
  border-color: var(--smsriver-accent-border);
}
.stream-alert-box {
  display: none;
  background: #fff7ed;
  border: 1px solid #fed7aa;
  border-radius: var(--smsriver-radius-sm);
  padding: 10px 16px;
  margin-bottom: 12px;
  font-size: 0.84rem;
  color: #9a3412;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
}
.stream-alert-content {
  display: flex;
  align-items: center;
  gap: 8px;
}
.stream-alert-icon {
  width: 15px;
  height: 15px;
  color: #d97706;
  flex-shrink: 0;
}
.btn-stream-reconnect {
  min-height: 44px;
  padding: 6px 14px;
  font-size: 0.76rem;
  background: #ffffff;
  color: var(--smsriver-text-primary);
  border: 1px solid var(--smsriver-border-subtle);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  border-radius: var(--smsriver-radius-sm);
  font-weight: 600;
}
.btn-stream-reconnect:hover {
  background: var(--smsriver-bg-elevated);
}

/* Operational Switchboard Protocol (How It Works) */
.section-how-it-works {
  padding: 56px 0;
}
.section-center-header {
  text-align: center;
  max-width: 600px;
  margin: 0 auto 36px;
}

/* Developer Platform & API Integration */
.section-developer-platform {
  padding: 48px 0;
  border-top: 1px solid var(--smsriver-border-subtle);
  background: var(--smsriver-bg-elevated);
}
.dev-platform-card {
  background: #ffffff;
  border: 1px solid var(--smsriver-border-subtle);
  border-radius: var(--smsriver-radius-md);
  padding: 24px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: border-color 0.15s, box-shadow 0.15s;
}
.dev-platform-card:hover {
  border-color: var(--smsriver-border-strong);
  box-shadow: var(--smsriver-shadow-sm);
}
.dev-card-title {
  font-weight: 800;
  font-size: 1.1rem;
  color: var(--smsriver-text-primary);
  margin-bottom: 8px;
}
.dev-card-desc {
  font-size: 0.88rem;
  color: var(--smsriver-text-secondary);
  margin-bottom: 16px;
  line-height: 1.5;
}
.dev-card-link {
  color: var(--smsriver-accent-primary);
  font-weight: 700;
  font-size: 0.85rem;
  text-decoration: none;
}
.dev-card-link:hover {
  text-decoration: underline;
}

/* Privacy & FAQ Sections */
.section-privacy {
  padding: 20px 0;
}
.content-constrained-960 {
  max-width: 960px;
  margin: 0 auto;
}
.section-faq {
  padding: 56px 0 64px;
  border-top: 1px solid var(--smsriver-border-subtle);
}
.faq-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 24px;
}
.faq-portal-link {
  color: var(--smsriver-accent-primary);
  font-weight: 700;
  font-size: 0.88rem;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 4px;
}
.faq-portal-link:hover {
  text-decoration: underline;
}

/* Cotton Component Layouts & Tool Containers */
.developer-split-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  align-items: stretch;
}
@media (max-width: 768px) {
  .developer-split-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }
}

#sms-calc-input::placeholder {
  color: #526071;
  opacity: 1;
}
.calc-telemetry-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  margin: 20px 0;
  border-top: 1px solid var(--smsriver-border-subtle);
  padding-top: 16px;
}
@media (max-width: 768px) {
  .calc-telemetry-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}
@media (max-width: 480px) {
  .calc-telemetry-grid {
    grid-template-columns: 1fr;
  }
}