/* =================================================================
   INVOICEAPP SUBDOMAIN TESTER - MODERN PREMIUM STYLESHEET
   ================================================================= */

:root {
  /* Color Palette - Dark Theme (Default) */
  --bg-primary: #0a0d14;
  --bg-secondary: #111622;
  --bg-surface: rgba(22, 28, 42, 0.7);
  --bg-surface-hover: rgba(30, 38, 58, 0.85);
  --bg-glass: rgba(18, 24, 38, 0.65);
  
  --border-subtle: rgba(255, 255, 255, 0.08);
  --border-glow: rgba(99, 102, 241, 0.35);
  --border-active: #6366f1;

  --text-primary: #f1f5f9;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  
  --primary: #6366f1;
  --primary-hover: #4f46e5;
  --primary-glow: rgba(99, 102, 241, 0.4);

  --accent-cyan: #06b6d4;
  --accent-purple: #a855f7;
  --accent-emerald: #10b981;
  --accent-amber: #f59e0b;
  --accent-rose: #f43f5e;

  --font-main: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: 'JetBrains Mono', monospace;

  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-full: 9999px;

  --shadow-sm: 0 4px 6px -1px rgba(0, 0, 0, 0.2);
  --shadow-md: 0 10px 25px -3px rgba(0, 0, 0, 0.4);
  --shadow-glow: 0 0 35px -5px rgba(99, 102, 241, 0.3);
  --transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}

/* Light Mode Overrides */
[data-theme="light"] {
  --bg-primary: #f8fafc;
  --bg-secondary: #ffffff;
  --bg-surface: rgba(255, 255, 255, 0.85);
  --bg-surface-hover: rgba(241, 245, 249, 0.95);
  --bg-glass: rgba(255, 255, 255, 0.75);
  
  --border-subtle: rgba(148, 163, 184, 0.2);
  --border-glow: rgba(99, 102, 241, 0.25);

  --text-primary: #0f172a;
  --text-secondary: #475569;
  --text-muted: #94a3b8;

  --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 10px 30px rgba(99, 102, 241, 0.08);
  --shadow-glow: 0 0 30px rgba(99, 102, 241, 0.15);
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-main);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  min-height: 100vh;
  position: relative;
  overflow-x: hidden;
  transition: background-color 0.3s ease, color 0.3s ease;
}

/* Background Ambient Lighting */
.glow-sphere {
  position: fixed;
  border-radius: 50%;
  filter: blur(100px);
  pointer-events: none;
  z-index: 0;
  opacity: 0.45;
  transition: opacity 0.5s ease;
}

.glow-1 {
  width: 480px;
  height: 480px;
  top: -100px;
  left: 15%;
  background: radial-gradient(circle, #4f46e5, #06b6d4);
  animation: floatOrb 12s ease-in-out infinite alternate;
}

.glow-2 {
  width: 520px;
  height: 520px;
  top: 35%;
  right: -80px;
  background: radial-gradient(circle, #7c3aed, #ec4899);
  animation: floatOrb 16s ease-in-out infinite alternate-reverse;
}

.glow-3 {
  width: 360px;
  height: 360px;
  bottom: 50px;
  left: 5%;
  background: radial-gradient(circle, #0284c7, #6366f1);
  animation: floatOrb 10s ease-in-out infinite alternate;
}

.grid-overlay {
  position: fixed;
  inset: 0;
  background-image: 
    linear-gradient(to right, var(--border-subtle) 1px, transparent 1px),
    linear-gradient(to bottom, var(--border-subtle) 1px, transparent 1px);
  background-size: 40px 40px;
  mask-image: radial-gradient(ellipse at center, black 30%, transparent 75%);
  -webkit-mask-image: radial-gradient(ellipse at center, black 30%, transparent 75%);
  pointer-events: none;
  z-index: 0;
  opacity: 0.6;
}

@keyframes floatOrb {
  0% { transform: translateY(0px) scale(1); }
  50% { transform: translateY(30px) scale(1.08); }
  100% { transform: translateY(-20px) scale(0.95); }
}

/* App Wrapper */
.app-wrapper {
  position: relative;
  z-index: 1;
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 24px 60px;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

/* Navbar */
.navbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 22px 0;
  border-bottom: 1px solid var(--border-subtle);
  position: sticky;
  top: 0;
  background: rgba(10, 13, 20, 0.7);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  z-index: 100;
  transition: background 0.3s;
}

[data-theme="light"] .navbar {
  background: rgba(248, 250, 252, 0.75);
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
}

.brand-icon {
  width: 40px;
  height: 40px;
  background: linear-gradient(135deg, #6366f1, #06b6d4);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #ffffff;
  box-shadow: 0 4px 15px rgba(99, 102, 241, 0.4);
}

.brand-title {
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

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

.brand-badge {
  font-size: 0.68rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 2px 7px;
  background: rgba(99, 102, 241, 0.15);
  color: var(--primary);
  border: 1px solid rgba(99, 102, 241, 0.3);
  border-radius: var(--radius-full);
  margin-left: 6px;
  vertical-align: middle;
}

.nav-status {
  display: flex;
  align-items: center;
  gap: 8px;
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  padding: 6px 14px;
  border-radius: var(--radius-full);
  font-size: 0.85rem;
  font-weight: 500;
}

.pulse-indicator {
  width: 9px;
  height: 9px;
  background-color: var(--accent-emerald);
  border-radius: 50%;
  box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.7);
  animation: pulseGreen 2s infinite;
}

@keyframes pulseGreen {
  0% { box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.7); }
  70% { box-shadow: 0 0 0 8px rgba(16, 185, 129, 0); }
  100% { box-shadow: 0 0 0 0 rgba(16, 185, 129, 0); }
}

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

.icon-btn {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  color: var(--text-primary);
  width: 38px;
  height: 38px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: var(--transition);
}

.icon-btn:hover {
  background: var(--bg-surface-hover);
  border-color: var(--primary);
}

.nav-btn {
  font-size: 0.875rem;
  font-weight: 600;
  text-decoration: none;
  padding: 8px 16px;
  border-radius: var(--radius-sm);
  transition: var(--transition);
}

.nav-btn.ghost {
  color: var(--text-secondary);
}

.nav-btn.ghost:hover {
  color: var(--text-primary);
  background: var(--bg-surface);
}

.nav-btn.primary {
  background: var(--primary);
  color: #ffffff;
  box-shadow: 0 4px 12px rgba(99, 102, 241, 0.3);
}

.nav-btn.primary:hover {
  background: var(--primary-hover);
  box-shadow: var(--shadow-glow);
  transform: translateY(-1px);
}

/* Hero Section */
.hero-section {
  padding: 50px 0 30px;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
}

.status-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px;
  background: rgba(16, 185, 129, 0.12);
  border: 1px solid rgba(16, 185, 129, 0.3);
  border-radius: var(--radius-full);
  color: var(--accent-emerald);
  font-size: 0.82rem;
  font-weight: 600;
  margin-bottom: 24px;
}

.hero-title {
  font-size: clamp(2.2rem, 5vw, 3.6rem);
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.03em;
  margin-bottom: 18px;
}

.gradient-text {
  background: linear-gradient(135deg, #6366f1 0%, #06b6d4 50%, #ec4899 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  display: inline-block;
}

.hero-subtitle {
  font-size: clamp(1rem, 2vw, 1.15rem);
  color: var(--text-secondary);
  max-width: 680px;
  margin-bottom: 40px;
  line-height: 1.6;
}

/* Diagnostic Card */
.diagnostic-card {
  width: 100%;
  background: var(--bg-glass);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 24px 28px;
  box-shadow: var(--shadow-md);
  margin-bottom: 48px;
  text-align: left;
  transition: border-color 0.3s ease;
}

.diagnostic-card:hover {
  border-color: var(--border-glow);
}

.card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-bottom: 20px;
  margin-bottom: 20px;
  border-bottom: 1px solid var(--border-subtle);
  flex-wrap: wrap;
  gap: 12px;
}

.card-title-group {
  display: flex;
  align-items: center;
  gap: 14px;
}

.card-title-icon {
  width: 24px;
  height: 24px;
  color: var(--accent-cyan);
}

.card-title-group h3 {
  font-size: 1.1rem;
  font-weight: 700;
  letter-spacing: -0.01em;
}

.card-title-group p {
  font-size: 0.82rem;
  color: var(--text-secondary);
}

.chip-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 7px 14px;
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-size: 0.8rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
}

.chip-btn:hover {
  background: var(--bg-surface-hover);
  border-color: var(--primary);
  color: var(--primary);
}

.diagnostic-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(210px, 1fr));
  gap: 16px;
}

.diag-item {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 14px 16px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.diag-item.full-width {
  grid-column: 1 / -1;
}

.diag-label {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--text-muted);
}

.diag-value-wrapper {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
}

.diag-value {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-primary);
  word-break: break-all;
}

.highlight-mono {
  font-family: var(--font-mono);
}

.diag-code {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--accent-cyan);
  background: rgba(6, 182, 212, 0.08);
  padding: 4px 8px;
  border-radius: 6px;
  word-break: break-all;
}

/* Badges */
.badge {
  font-size: 0.7rem;
  font-weight: 700;
  padding: 3px 8px;
  border-radius: var(--radius-full);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  white-space: nowrap;
}

.badge-success {
  background: rgba(16, 185, 129, 0.15);
  color: var(--accent-emerald);
  border: 1px solid rgba(16, 185, 129, 0.3);
}

.badge-warning {
  background: rgba(245, 158, 11, 0.15);
  color: var(--accent-amber);
  border: 1px solid rgba(245, 158, 11, 0.3);
}

.badge-purple {
  background: rgba(168, 85, 247, 0.15);
  color: var(--accent-purple);
  border: 1px solid rgba(168, 85, 247, 0.3);
}

.badge-cyan {
  background: rgba(6, 182, 212, 0.15);
  color: var(--accent-cyan);
  border: 1px solid rgba(6, 182, 212, 0.3);
}

/* Features Grid */
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(290px, 1fr));
  gap: 20px;
  width: 100%;
  margin-bottom: 50px;
  text-align: left;
}

.feature-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 26px;
  display: flex;
  flex-direction: column;
  transition: var(--transition);
}

.feature-card:hover {
  transform: translateY(-4px);
  border-color: var(--border-glow);
  box-shadow: var(--shadow-md);
}

.feature-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 18px;
  color: #ffffff;
}

.bg-indigo { background: linear-gradient(135deg, #6366f1, #4338ca); box-shadow: 0 4px 14px rgba(99, 102, 241, 0.3); }
.bg-cyan { background: linear-gradient(135deg, #06b6d4, #0891b2); box-shadow: 0 4px 14px rgba(6, 182, 212, 0.3); }
.bg-rose { background: linear-gradient(135deg, #f43f5e, #e11d48); box-shadow: 0 4px 14px rgba(244, 63, 94, 0.3); }

.feature-card h4 {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.feature-card p {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.55;
  margin-bottom: 20px;
  flex-grow: 1;
}

.card-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--primary);
  font-size: 0.85rem;
  font-weight: 600;
  text-decoration: none;
  transition: gap 0.2s ease;
}

.card-link:hover {
  gap: 10px;
}

/* Guide Section */
.guide-section {
  width: 100%;
  background: var(--bg-glass);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 36px 32px;
  margin-bottom: 40px;
  text-align: left;
}

.guide-header {
  margin-bottom: 24px;
}

.guide-title {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 6px;
}

.guide-title i {
  color: var(--primary);
}

.guide-title h2 {
  font-size: 1.4rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.guide-header p {
  color: var(--text-secondary);
  font-size: 0.95rem;
}

.tabs-nav {
  display: flex;
  gap: 10px;
  border-bottom: 1px solid var(--border-subtle);
  padding-bottom: 14px;
  margin-bottom: 24px;
  overflow-x: auto;
}

.tab-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 9px 18px;
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  color: var(--text-secondary);
  font-size: 0.88rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  white-space: nowrap;
}

.tab-btn:hover {
  color: var(--text-primary);
  background: var(--bg-surface-hover);
}

.tab-btn.active {
  background: var(--primary);
  color: #ffffff;
  border-color: var(--primary);
  box-shadow: 0 4px 12px rgba(99, 102, 241, 0.3);
}

.tab-content {
  display: none;
}

.tab-content.active {
  display: block;
  animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(6px); }
  to { opacity: 1; transform: translateY(0); }
}

.step-list {
  display: flex;
  flex-direction: column;
  gap: 22px;
}

.step-item {
  display: flex;
  gap: 16px;
}

.step-number {
  width: 32px;
  height: 32px;
  background: rgba(99, 102, 241, 0.15);
  border: 1px solid rgba(99, 102, 241, 0.4);
  color: var(--primary);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 0.9rem;
  flex-shrink: 0;
}

.step-body {
  flex-grow: 1;
}

.step-body h5 {
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 6px;
}

.step-body p {
  color: var(--text-secondary);
  font-size: 0.9rem;
  margin-bottom: 12px;
}

.step-body code {
  font-family: var(--font-mono);
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  padding: 2px 6px;
  border-radius: 4px;
  color: var(--accent-cyan);
  font-size: 0.85rem;
}

.code-block {
  position: relative;
  background: #06090e;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 16px 20px;
  overflow-x: auto;
  margin-top: 8px;
}

[data-theme="light"] .code-block {
  background: #0f172a;
}

.code-block code, .code-block pre {
  font-family: var(--font-mono);
  font-size: 0.84rem;
  color: #38bdf8;
  white-space: pre-wrap;
}

.copy-code-btn {
  position: absolute;
  top: 12px;
  right: 12px;
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 5px 10px;
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: var(--radius-sm);
  color: #ffffff;
  font-size: 0.75rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
}

.copy-code-btn:hover {
  background: var(--primary);
  border-color: var(--primary);
}

.text-link {
  color: var(--primary);
  text-decoration: underline;
}

/* Simple Table */
.table-container {
  overflow-x: auto;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-subtle);
}

.simple-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.88rem;
  text-align: left;
}

.simple-table th, .simple-table td {
  padding: 12px 16px;
  border-bottom: 1px solid var(--border-subtle);
}

.simple-table th {
  background: var(--bg-surface);
  color: var(--text-muted);
  font-weight: 600;
  text-transform: uppercase;
  font-size: 0.75rem;
  letter-spacing: 0.05em;
}

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

/* Simulator Card */
.simulator-card {
  width: 100%;
  background: linear-gradient(135deg, rgba(99, 102, 241, 0.08), rgba(6, 182, 212, 0.08));
  border: 1px solid var(--border-glow);
  border-radius: var(--radius-lg);
  padding: 26px 30px;
  text-align: left;
  margin-bottom: 50px;
}

.sim-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 18px;
}

.sim-header i {
  color: var(--accent-cyan);
}

.sim-header h3 {
  font-size: 1.1rem;
  font-weight: 700;
}

.sim-header p {
  font-size: 0.85rem;
  color: var(--text-secondary);
}

.sim-input-row {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.input-group {
  display: flex;
  align-items: center;
  flex-grow: 1;
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: border-color 0.2s;
}

.input-group:focus-within {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.2);
}

.input-addon {
  padding: 10px 14px;
  background: rgba(255, 255, 255, 0.04);
  color: var(--text-muted);
  font-family: var(--font-mono);
  font-size: 0.88rem;
  border-right: 1px solid var(--border-subtle);
}

.input-group input {
  flex-grow: 1;
  background: transparent;
  border: none;
  padding: 10px 16px;
  color: var(--text-primary);
  font-family: var(--font-mono);
  font-size: 0.92rem;
  outline: none;
}

.sim-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 22px;
  background: var(--primary);
  border: none;
  border-radius: var(--radius-md);
  color: #ffffff;
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
}

.sim-btn:hover {
  background: var(--primary-hover);
  box-shadow: var(--shadow-glow);
}

/* Footer */
.footer {
  margin-top: auto;
  padding-top: 30px;
  border-top: 1px solid var(--border-subtle);
}

.footer-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
  font-size: 0.86rem;
  color: var(--text-secondary);
}

.footer-links {
  display: flex;
  gap: 18px;
}

.footer-link {
  color: var(--text-secondary);
  text-decoration: none;
  transition: color 0.2s;
}

.footer-link:hover {
  color: var(--primary);
}

/* Toast Notification */
.toast {
  position: fixed;
  bottom: 24px;
  right: 24px;
  background: #1e293b;
  border: 1px solid var(--border-glow);
  color: #ffffff;
  padding: 12px 20px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  gap: 10px;
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.4);
  font-size: 0.88rem;
  font-weight: 600;
  z-index: 9999;
  opacity: 0;
  transform: translateY(20px);
  pointer-events: none;
  transition: opacity 0.3s ease, transform 0.3s ease;
}

.toast.show {
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
}

.toast-icon {
  color: var(--accent-emerald);
}

/* Responsive adjustments */
@media (max-width: 768px) {
  .navbar {
    padding: 16px 0;
  }
  .nav-status {
    display: none;
  }
  .hero-section {
    padding: 30px 0 20px;
  }
  .diagnostic-card {
    padding: 18px 20px;
  }
  .card-header {
    flex-direction: column;
    align-items: flex-start;
  }
  .features-grid {
    grid-template-columns: 1fr;
  }
  .sim-input-row {
    flex-direction: column;
  }
  .sim-btn {
    width: 100%;
    justify-content: center;
  }
}