:root {
  --bg-dark: #070a12;
  --bg-surface: #0f172a;
  --bg-card: rgba(20, 30, 55, 0.75);
  --bg-card-hover: rgba(28, 42, 75, 0.9);
  --border-color: rgba(255, 255, 255, 0.09);
  --border-focus: #38bdf8;
  --text-primary: #f8fafc;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  --primary: #2563eb;
  --primary-hover: #1d4ed8;
  --accent: #38bdf8;
  --accent-glow: rgba(56, 189, 248, 0.35);
  --success: #10b981;
  --warning: #f59e0b;
  --warning-bg: rgba(245, 158, 11, 0.12);
  --warning-border: rgba(245, 158, 11, 0.35);
  --danger: #ef4444;
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 14px;
  --radius-xl: 18px;
  --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  font-family: var(--font-family);
}

body {
  background-color: var(--bg-dark);
  color: var(--text-primary);
  min-height: 100vh;
  overflow-x: hidden;
  line-height: 1.5;
  background-image: 
    radial-gradient(circle at 15% 15%, rgba(37, 99, 235, 0.12) 0%, transparent 45%),
    radial-gradient(circle at 85% 85%, rgba(56, 189, 248, 0.08) 0%, transparent 45%),
    radial-gradient(circle at 50% 50%, rgba(15, 23, 42, 0.6) 0%, transparent 100%);
  background-attachment: fixed;
}

/* ==========================================================================
   PROMINENT DEMO DISCLAIMER BANNER (CARTEL DE AVISO NO FUNCIONAL)
   ========================================================================= */
.demo-banner {
  background: linear-gradient(135deg, rgba(30, 27, 75, 0.95), rgba(15, 23, 42, 0.98));
  border-bottom: 2px solid #f59e0b;
  box-shadow: 0 4px 20px rgba(245, 158, 11, 0.18), 0 0 30px rgba(0, 0, 0, 0.5);
  position: relative;
  z-index: 200;
}

.demo-banner-content {
  max-width: 1400px;
  margin: 0 auto;
  padding: 14px 24px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.demo-banner-main {
  display: flex;
  align-items: flex-start;
  gap: 16px;
}

.demo-banner-icon {
  font-size: 1.8rem;
  line-height: 1;
  filter: drop-shadow(0 0 10px rgba(245, 158, 11, 0.5));
  animation: pulseIcon 2s ease-in-out infinite;
}

@keyframes pulseIcon {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.1); }
}

.demo-banner-text {
  flex: 1;
}

.demo-banner-title {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
  font-size: 0.98rem;
  font-weight: 700;
  color: #fbbf24;
  letter-spacing: -0.01em;
}

.demo-tag {
  background: rgba(245, 158, 11, 0.2);
  border: 1px solid #f59e0b;
  color: #fef08a;
  padding: 2px 8px;
  border-radius: 4px;
  font-size: 0.72rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.demo-tag.simulator {
  background: rgba(56, 189, 248, 0.2);
  border-color: #38bdf8;
  color: #bae6fd;
}

.demo-banner-desc {
  font-size: 0.84rem;
  color: #cbd5e1;
  margin-top: 4px;
  line-height: 1.45;
}

.demo-banner-desc strong {
  color: #f8fafc;
}

.demo-banner-actions {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  padding-top: 6px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.demo-banner-buttons {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
}

.btn-banner {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  border-radius: var(--radius-sm);
  font-size: 0.78rem;
  font-weight: 600;
  text-decoration: none;
  transition: all 0.2s ease;
  cursor: pointer;
  border: none;
}

.btn-banner-win {
  background: linear-gradient(135deg, #0284c7, #0369a1);
  color: #ffffff;
  box-shadow: 0 2px 8px rgba(2, 132, 199, 0.3);
}

.btn-banner-win:hover {
  background: linear-gradient(135deg, #38bdf8, #0284c7);
  transform: translateY(-1px);
}

.btn-banner-linux {
  background: linear-gradient(135deg, #e11d48, #be123c);
  color: #ffffff;
  box-shadow: 0 2px 8px rgba(225, 29, 72, 0.3);
}

.btn-banner-linux:hover {
  background: linear-gradient(135deg, #fb7185, #e11d48);
  transform: translateY(-1px);
}

.btn-banner-gh {
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid var(--border-color);
  color: var(--text-primary);
}

.btn-banner-gh:hover {
  background: rgba(255, 255, 255, 0.2);
  border-color: rgba(255, 255, 255, 0.3);
  color: #ffffff;
}

.demo-lang-toggle {
  display: flex;
  align-items: center;
  gap: 6px;
  background: rgba(0, 0, 0, 0.3);
  padding: 4px;
  border-radius: 6px;
  border: 1px solid var(--border-color);
}

.btn-lang {
  background: transparent;
  border: none;
  color: var(--text-secondary);
  font-size: 0.74rem;
  font-weight: 600;
  padding: 3px 8px;
  border-radius: 4px;
  cursor: pointer;
  transition: all 0.15s ease;
}

.btn-lang.active {
  background: #3b82f6;
  color: #ffffff;
}

/* ==========================================================================
   APP HEADER
   ========================================================================== */
.app-header {
  background: rgba(15, 23, 42, 0.85);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-color);
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 14px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  flex-wrap: wrap;
}

.header-brand {
  display: flex;
  align-items: center;
  gap: 14px;
  text-decoration: none;
}

.logo-wrap {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-md);
  background: linear-gradient(135deg, #2563eb, #38bdf8);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 0 20px var(--accent-glow);
  position: relative;
}

.logo-wrap img, .logo-wrap svg {
  width: 28px;
  height: 28px;
}

.live-badge {
  position: absolute;
  top: -4px;
  right: -4px;
  width: 12px;
  height: 12px;
  background: #10b981;
  border: 2px solid #0f172a;
  border-radius: 50%;
  box-shadow: 0 0 8px #10b981;
}

.brand-title {
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  background: linear-gradient(90deg, #f8fafc, #cbd5e1);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  display: flex;
  align-items: center;
  gap: 8px;
}

.version-chip {
  font-size: 0.68rem;
  padding: 2px 6px;
  border-radius: 999px;
  background: rgba(56, 189, 248, 0.15);
  border: 1px solid rgba(56, 189, 248, 0.3);
  color: #38bdf8;
  font-weight: 600;
  -webkit-text-fill-color: #38bdf8;
}

.brand-subtitle {
  font-size: 0.78rem;
  color: var(--text-secondary);
}

.header-nav {
  display: flex;
  align-items: center;
  gap: 6px;
  background: rgba(9, 13, 22, 0.6);
  padding: 4px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
}

.nav-tab {
  background: transparent;
  border: none;
  color: var(--text-secondary);
  padding: 7px 14px;
  font-size: 0.82rem;
  font-weight: 600;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all 0.15s ease;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.nav-tab:hover {
  color: var(--text-primary);
  background: rgba(255, 255, 255, 0.05);
}

.nav-tab.active {
  background: var(--primary);
  color: #ffffff;
  box-shadow: 0 2px 8px rgba(37, 99, 235, 0.4);
}

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

/* ==========================================================================
   BUTTONS & COMMON UI
   ========================================================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 8px 16px;
  border-radius: var(--radius-sm);
  font-size: 0.82rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.15s ease;
  border: none;
  outline: none;
  white-space: nowrap;
  text-decoration: none;
}

.btn-icon {
  width: 16px;
  height: 16px;
}

.btn-primary {
  background: linear-gradient(135deg, #2563eb, #1d4ed8);
  color: white;
  box-shadow: 0 4px 12px rgba(37, 99, 235, 0.3);
}

.btn-primary:hover {
  background: linear-gradient(135deg, #3b82f6, #2563eb);
  box-shadow: 0 4px 18px rgba(37, 99, 235, 0.5);
  transform: translateY(-1px);
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.06);
  color: var(--text-primary);
  border: 1px solid var(--border-color);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.12);
  border-color: rgba(255, 255, 255, 0.2);
}

.btn-accent {
  background: linear-gradient(135deg, #0284c7, #0369a1);
  color: white;
}

.btn-accent:hover {
  background: linear-gradient(135deg, #38bdf8, #0284c7);
}

.btn-danger {
  background: rgba(239, 68, 68, 0.2);
  border: 1px solid rgba(239, 68, 68, 0.4);
  color: #f87171;
}

.btn-danger:hover {
  background: rgba(239, 68, 68, 0.3);
}

.btn-small {
  padding: 5px 10px;
  font-size: 0.75rem;
}

.btn-large {
  padding: 12px 28px;
  font-size: 0.95rem;
  font-weight: 700;
}

/* Badges */
.badge {
  display: inline-flex;
  align-items: center;
  padding: 3px 8px;
  border-radius: 9999px;
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.badge-primary {
  background: rgba(37, 99, 235, 0.2);
  color: #60a5fa;
  border: 1px solid rgba(37, 99, 235, 0.3);
}

.badge-secondary {
  background: rgba(255, 255, 255, 0.08);
  color: var(--text-secondary);
  border: 1px solid var(--border-color);
}

.badge-success {
  background: rgba(16, 185, 129, 0.2);
  color: #34d399;
  border: 1px solid rgba(16, 185, 129, 0.3);
}

.badge-warning {
  background: rgba(245, 158, 11, 0.2);
  color: #fbbf24;
  border: 1px solid rgba(245, 158, 11, 0.3);
}

.badge-danger {
  background: rgba(239, 68, 68, 0.2);
  color: #f87171;
  border: 1px solid rgba(239, 68, 68, 0.3);
}

/* ==========================================================================
   MAIN CONTENT & TABS
   ========================================================================== */
.main-wrapper {
  max-width: 1400px;
  margin: 0 auto;
  padding: 24px;
}

.tab-pane {
  display: none;
  animation: fadeIn 0.2s ease-out;
}

.tab-pane.active {
  display: block;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(4px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ==========================================================================
   TAB 1: SETUP WIZARD
   ========================================================================== */
.section {
  margin-bottom: 28px;
}

.section-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 16px;
  flex-wrap: wrap;
  gap: 12px;
}

.section-title-wrap {
  display: flex;
  align-items: center;
  gap: 12px;
}

.section-title {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 8px;
}

.section-desc {
  font-size: 0.85rem;
  color: var(--text-secondary);
  margin-top: 3px;
}

.displays-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(430px, 1fr));
  gap: 20px;
}

.display-card {
  background: var(--bg-card);
  backdrop-filter: blur(12px);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 20px;
  transition: all 0.2s ease;
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.display-card:hover {
  border-color: rgba(56, 189, 248, 0.35);
  background: var(--bg-card-hover);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.4);
}

.display-card.disabled {
  opacity: 0.5;
  filter: grayscale(0.4);
}

.display-card-top {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--border-color);
}

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

.display-badge-number {
  width: 36px;
  height: 36px;
  background: rgba(56, 189, 248, 0.15);
  border: 1px solid rgba(56, 189, 248, 0.3);
  color: var(--accent);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 1.05rem;
}

.display-label {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--text-primary);
}

.display-meta {
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-top: 2px;
}

.display-tags {
  display: flex;
  gap: 6px;
  align-items: center;
}

.url-preset-pills {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 6px;
}

.preset-pill {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  font-size: 0.72rem;
  padding: 3px 8px;
  border-radius: 4px;
  cursor: pointer;
  transition: all 0.15s ease;
}

.preset-pill:hover {
  background: rgba(56, 189, 248, 0.15);
  color: var(--accent);
  border-color: rgba(56, 189, 248, 0.3);
}

/* Forms & Inputs */
.form-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.form-group label {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-secondary);
}

.form-input-group {
  display: flex;
  gap: 8px;
}

.form-input {
  width: 100%;
  background: rgba(9, 13, 22, 0.7);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  padding: 9px 12px;
  font-size: 0.85rem;
  transition: all 0.15s ease;
  outline: none;
}

.form-input:focus {
  border-color: var(--border-focus);
  box-shadow: 0 0 0 2px rgba(56, 189, 248, 0.2);
  background: rgba(9, 13, 22, 0.95);
}

.form-hint {
  font-size: 0.72rem;
  color: var(--text-muted);
}

.form-row {
  display: flex;
  gap: 12px;
}

.flex-1 { flex: 1; }
.flex-2 { flex: 2; }

.form-checkbox-group {
  display: flex;
  align-items: center;
}

.checkbox-container {
  display: flex;
  align-items: center;
  position: relative;
  cursor: pointer;
  font-size: 0.82rem;
  color: var(--text-secondary);
  user-select: none;
  gap: 8px;
}

.checkbox-container input {
  position: absolute;
  opacity: 0;
  cursor: pointer;
  height: 0;
  width: 0;
}

.checkmark {
  height: 18px;
  width: 18px;
  background-color: rgba(9, 13, 22, 0.7);
  border: 1px solid var(--border-color);
  border-radius: 4px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.15s ease;
}

.checkbox-container:hover input ~ .checkmark {
  border-color: var(--accent);
}

.checkbox-container input:checked ~ .checkmark {
  background-color: var(--primary);
  border-color: var(--primary);
}

.checkmark:after {
  content: "";
  display: none;
  width: 4px;
  height: 8px;
  border: solid white;
  border-width: 0 2px 2px 0;
  transform: rotate(45deg);
  margin-bottom: 2px;
}

.checkbox-container input:checked ~ .checkmark:after {
  display: block;
}

/* Advanced HTTP Details */
.details-advanced {
  background: rgba(0, 0, 0, 0.25);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  padding: 8px 12px;
}

.details-advanced summary {
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--accent);
  cursor: pointer;
  user-select: none;
  outline: none;
  display: flex;
  align-items: center;
  gap: 6px;
}

.details-advanced summary:hover {
  color: #7dd3fc;
}

.details-content {
  margin-top: 12px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.form-textarea {
  width: 100%;
  background: rgba(9, 13, 22, 0.7);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  padding: 8px 12px;
  font-size: 0.8rem;
  font-family: var(--font-mono);
  resize: vertical;
  min-height: 54px;
  outline: none;
}

.form-textarea:focus {
  border-color: var(--border-focus);
  box-shadow: 0 0 0 2px rgba(56, 189, 248, 0.2);
  background: rgba(9, 13, 22, 0.95);
}

.form-select {
  background: rgba(9, 13, 22, 0.8);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  padding: 8px 12px;
  font-size: 0.85rem;
  outline: none;
}

/* Global Settings Grid */
.settings-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 20px;
}

.card {
  background: var(--bg-card);
  backdrop-filter: blur(12px);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.card-title {
  font-size: 0.98rem;
  font-weight: 700;
  color: var(--text-primary);
  border-bottom: 1px solid var(--border-color);
  padding-bottom: 10px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.api-endpoints-preview {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 4px;
}

.endpoint-tag {
  background: rgba(0, 0, 0, 0.4);
  border: 1px solid var(--border-color);
  padding: 3px 8px;
  border-radius: 4px;
  font-size: 0.72rem;
  font-family: var(--font-mono);
  color: var(--accent);
}

/* Setup Wizard Footer Bar */
.wizard-footer-bar {
  position: sticky;
  bottom: 0;
  background: rgba(15, 23, 42, 0.95);
  backdrop-filter: blur(16px);
  border-top: 1px solid var(--border-color);
  padding: 16px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-top: 24px;
  border-radius: var(--radius-lg);
  box-shadow: 0 -4px 20px rgba(0, 0, 0, 0.5);
  z-index: 90;
}

/* Toast */
.status-toast {
  padding: 8px 16px;
  border-radius: var(--radius-sm);
  font-size: 0.84rem;
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.status-toast.success {
  background: rgba(16, 185, 129, 0.2);
  border: 1px solid rgba(16, 185, 129, 0.4);
  color: #34d399;
}

.status-toast.error {
  background: rgba(239, 68, 68, 0.2);
  border: 1px solid rgba(239, 68, 68, 0.4);
  color: #f87171;
}

.status-toast.hidden {
  display: none;
}

/* ==========================================================================
   TAB 2: MULTI-SCREEN KIOSK SIMULATOR
   ========================================================================== */
.simulator-header {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 16px 20px;
  margin-bottom: 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 14px;
}

.simulator-controls {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.simulator-room {
  background: rgba(5, 8, 15, 0.9);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  padding: 28px;
  box-shadow: inset 0 0 50px rgba(0, 0, 0, 0.8);
  position: relative;
  min-height: 560px;
}

.simulator-screens-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(420px, 1fr));
  gap: 24px;
}

/* Virtual Hardware Screen Monitor Frame */
.virtual-monitor {
  background: #0b0f19;
  border: 12px solid #1e293b;
  border-radius: 12px;
  box-shadow: 0 15px 35px rgba(0, 0, 0, 0.8), 0 0 0 1px rgba(255, 255, 255, 0.05);
  display: flex;
  flex-direction: column;
  position: relative;
  overflow: hidden;
  min-height: 380px;
}

.monitor-stand {
  width: 100px;
  height: 20px;
  background: #334155;
  margin: 0 auto;
  clip-path: polygon(15% 0%, 85% 0%, 100% 100%, 0% 100%);
}

.monitor-base {
  width: 180px;
  height: 8px;
  background: #475569;
  margin: 0 auto;
  border-radius: 4px;
}

.virtual-monitor-header {
  background: rgba(15, 23, 42, 0.95);
  padding: 8px 12px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--border-color);
  font-size: 0.75rem;
  color: var(--text-secondary);
}

.monitor-id-tag {
  font-weight: 700;
  color: #38bdf8;
  display: flex;
  align-items: center;
  gap: 6px;
}

.monitor-live-dot {
  width: 8px;
  height: 8px;
  background: #10b981;
  border-radius: 50%;
  box-shadow: 0 0 6px #10b981;
  animation: pulseDot 2s infinite;
}

@keyframes pulseDot {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}

.virtual-monitor-viewport {
  flex: 1;
  background: #020617;
  position: relative;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.screen-simulation-feed {
  width: 100%;
  height: 100%;
  flex: 1;
  display: flex;
  flex-direction: column;
  background: #090d16;
  position: relative;
}

/* Simulated Signage Dashboards */
.signage-feed-dashboard {
  padding: 20px;
  height: 100%;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  background: linear-gradient(135deg, #090d16 0%, #0f172a 100%);
  color: white;
  position: relative;
}

.dashboard-topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  padding-bottom: 12px;
}

.dashboard-title {
  font-size: 1.1rem;
  font-weight: 700;
  color: #38bdf8;
}

.dashboard-clock {
  font-size: 1.3rem;
  font-weight: 800;
  font-family: var(--font-mono);
  color: #f8fafc;
}

.dashboard-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
  margin: 16px 0;
}

.feed-widget {
  background: rgba(30, 41, 59, 0.6);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 8px;
  padding: 12px;
}

.widget-label {
  font-size: 0.72rem;
  color: var(--text-muted);
  text-transform: uppercase;
  font-weight: 600;
}

.widget-value {
  font-size: 1.4rem;
  font-weight: 700;
  color: #f8fafc;
  margin-top: 4px;
}

.widget-sub {
  font-size: 0.72rem;
  color: #10b981;
}

.feed-ticker {
  background: rgba(0, 0, 0, 0.5);
  border-radius: 6px;
  padding: 8px 12px;
  font-size: 0.78rem;
  color: #94a3b8;
  display: flex;
  align-items: center;
  gap: 8px;
}

/* Offline Fallback Component inside Simulator */
.simulated-offline-view {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: #0a0e1a;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 20px;
  text-align: center;
  z-index: 10;
  animation: fadeIn 0.3s ease;
}

.offline-pulse-circle {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: rgba(239, 68, 68, 0.15);
  border: 2px solid #ef4444;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #ef4444;
  margin-bottom: 12px;
  animation: alertPulse 1.5s infinite;
}

@keyframes alertPulse {
  0%, 100% { transform: scale(1); box-shadow: 0 0 0 0 rgba(239, 68, 68, 0.4); }
  50% { transform: scale(1.08); box-shadow: 0 0 20px rgba(239, 68, 68, 0.6); }
}

.offline-feed-title {
  font-size: 1.1rem;
  font-weight: 700;
  color: #f8fafc;
}

.offline-feed-sub {
  font-size: 0.78rem;
  color: var(--text-secondary);
  margin-top: 4px;
}

.offline-countdown-badge {
  margin-top: 14px;
  background: rgba(0, 0, 0, 0.4);
  border: 1px solid var(--border-color);
  padding: 6px 14px;
  border-radius: 999px;
  font-size: 0.8rem;
  font-family: var(--font-mono);
  color: #38bdf8;
}

/* ==========================================================================
   TAB 3: REST API EXPLORER
   ========================================================================== */
.api-explorer-layout {
  display: grid;
  grid-template-columns: 320px 1fr;
  gap: 24px;
}

@media (max-width: 960px) {
  .api-explorer-layout {
    grid-template-columns: 1fr;
  }
}

.endpoint-list {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.endpoint-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 12px;
  border-radius: var(--radius-sm);
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border-color);
  cursor: pointer;
  transition: all 0.15s ease;
}

.endpoint-item:hover {
  background: rgba(56, 189, 248, 0.1);
  border-color: rgba(56, 189, 248, 0.3);
}

.endpoint-item.active {
  background: rgba(37, 99, 235, 0.2);
  border-color: #3b82f6;
}

.method-tag {
  font-size: 0.7rem;
  font-weight: 800;
  padding: 2px 6px;
  border-radius: 4px;
  font-family: var(--font-mono);
}

.method-get { background: rgba(16, 185, 129, 0.2); color: #34d399; }
.method-post { background: rgba(59, 130, 246, 0.2); color: #60a5fa; }
.method-put { background: rgba(245, 158, 11, 0.2); color: #fbbf24; }

.endpoint-path {
  font-size: 0.8rem;
  font-family: var(--font-mono);
  color: var(--text-primary);
}

.api-tester-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.api-response-viewer {
  background: #060911;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 16px;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: #38bdf8;
  max-height: 380px;
  overflow-y: auto;
  white-space: pre-wrap;
}

/* ==========================================================================
   TAB 4: DOWNLOADS & DOCS
   ========================================================================== */
.downloads-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(360px, 1fr));
  gap: 24px;
}

.download-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 24px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 16px;
}

.download-card-header {
  display: flex;
  align-items: center;
  gap: 12px;
}

.os-icon {
  font-size: 2rem;
}

.download-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.download-list-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: rgba(0, 0, 0, 0.3);
  padding: 10px 14px;
  border-radius: 8px;
  border: 1px solid var(--border-color);
}

.download-file-info {
  display: flex;
  flex-direction: column;
}

.download-file-name {
  font-size: 0.84rem;
  font-weight: 600;
  color: #f8fafc;
}

.download-file-desc {
  font-size: 0.72rem;
  color: var(--text-muted);
}

/* ==========================================================================
   MODALS & OVERLAYS
   ========================================================================== */
.modal-backdrop {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background: rgba(0, 0, 0, 0.8);
  backdrop-filter: blur(10px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  animation: fadeIn 0.2s ease-out;
}

.modal-backdrop.hidden {
  display: none;
}

.modal-card {
  background: #0f172a;
  border: 1px solid rgba(56, 189, 248, 0.3);
  border-radius: 16px;
  width: 90%;
  max-width: 580px;
  padding: 28px;
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.9);
  display: flex;
  flex-direction: column;
  gap: 20px;
  max-height: 90vh;
  overflow-y: auto;
}

.modal-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  border-bottom: 1px solid var(--border-color);
  padding-bottom: 16px;
}

.modal-title-wrap {
  display: flex;
  align-items: center;
  gap: 12px;
}

.modal-title {
  font-size: 1.2rem;
  font-weight: 700;
  color: #f8fafc;
}

.modal-version {
  font-size: 0.75rem;
  color: var(--text-muted);
}

.btn-close {
  background: transparent;
  border: none;
  color: var(--text-muted);
  font-size: 1.6rem;
  line-height: 1;
  cursor: pointer;
  padding: 0 4px;
}

.btn-close:hover {
  color: #f8fafc;
}

.credits-card {
  background: rgba(30, 41, 59, 0.7);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 10px;
  padding: 16px;
}

.credits-title {
  font-size: 0.88rem;
  color: #f8fafc;
  margin-bottom: 12px;
}

.credits-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
  font-size: 0.82rem;
}

.credits-list li {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--text-secondary);
}

.credits-list a {
  color: var(--accent);
  text-decoration: none;
  transition: color 0.15s ease;
}

.credits-list a:hover {
  color: #7dd3fc;
  text-decoration: underline;
}

/* Fullscreen Screen Identification Overlay */
.identify-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background: rgba(7, 10, 18, 0.85);
  backdrop-filter: blur(12px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 2000;
  pointer-events: none;
  animation: fadeIn 0.2s ease-out;
}

.identify-overlay.hidden {
  display: none;
}

.identify-card {
  background: rgba(15, 23, 42, 0.95);
  border: 3px solid #38bdf8;
  border-radius: 24px;
  padding: 40px 60px;
  display: flex;
  flex-direction: column;
  align-items: center;
  box-shadow: 0 0 60px rgba(56, 189, 248, 0.6);
  text-align: center;
}

.identify-num {
  font-size: 6rem;
  font-weight: 900;
  line-height: 1;
  background: linear-gradient(135deg, #38bdf8, #818cf8);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.identify-label {
  font-size: 1.5rem;
  font-weight: 700;
  margin-top: 8px;
  color: #f8fafc;
}

.identify-sub {
  font-size: 1rem;
  color: var(--text-secondary);
  margin-top: 4px;
}

/* Live Logs Viewer */
.logs-console {
  background: #060911;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  padding: 12px;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  height: 300px;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.log-line {
  display: flex;
  gap: 8px;
}

.log-time { color: var(--text-muted); }
.log-info { color: #38bdf8; }
.log-warn { color: #fbbf24; }
.log-error { color: #f87171; }
.log-msg { color: #e2e8f0; }

/* Responsive adjustments */
@media (max-width: 768px) {
  .displays-grid {
    grid-template-columns: 1fr;
  }
  .header-container {
    flex-direction: column;
    align-items: flex-start;
  }
  .demo-banner-actions {
    flex-direction: column;
    align-items: flex-start;
  }
}