/* ================================================
   CodeSureX - AI-Driven Application Assurance
   Complete Stylesheet
   ================================================ */

/* ---- CSS Custom Properties ---- */
:root {
  --color-primary: #3B82F6;
  --color-primary-dark: #2563EB;
  --color-primary-light: #60A5FA;
  --color-primary-50: #EFF6FF;
  --color-primary-100: #DBEAFE;
  --color-primary-900: #1E3A5F;

  --color-accent: #8B5CF6;
  --color-accent-dark: #7C3AED;

  --color-success: #10B981;
  --color-warning: #F59E0B;
  --color-danger: #EF4444;
  --color-info: #06B6D4;

  --color-bg: #FAFBFF;
  --color-surface: #FFFFFF;
  --color-surface-alt: #F1F5F9;
  --color-border: #E2E8F0;
  --color-border-light: #F1F5F9;

  --color-text: #1E293B;
  --color-text-secondary: #64748B;
  --color-text-muted: #94A3B8;

  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.07), 0 2px 4px -2px rgba(0, 0, 0, 0.05);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.08), 0 4px 6px -4px rgba(0, 0, 0, 0.04);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.08), 0 8px 10px -6px rgba(0, 0, 0, 0.04);

  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-full: 9999px;

  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', monospace;

  --transition-fast: 150ms ease;
  --transition-normal: 250ms ease;
  --transition-slow: 400ms ease;

  --container-max: 1200px;
  --nav-height: 72px;
}

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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-sans);
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

a {
  color: var(--color-primary);
  text-decoration: none;
}

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

button {
  cursor: pointer;
  border: none;
  background: none;
  font-family: inherit;
  font-size: inherit;
}

input, select, textarea {
  font-family: inherit;
  font-size: inherit;
}

/* ---- Container ---- */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 24px;
}

/* ---- Buttons ---- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 20px;
  border-radius: var(--radius-md);
  font-weight: 500;
  font-size: 14px;
  line-height: 1;
  transition: all var(--transition-normal);
  white-space: nowrap;
}

.btn-primary {
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
  color: #fff;
  box-shadow: 0 2px 8px rgba(59, 130, 246, 0.3);
}
.btn-primary:hover {
  box-shadow: 0 4px 16px rgba(59, 130, 246, 0.4);
  transform: translateY(-1px);
}
.btn-primary:active {
  transform: translateY(0);
}
.btn-primary:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none;
  box-shadow: none;
}

.btn-outline {
  border: 1.5px solid var(--color-border);
  color: var(--color-text);
  background: var(--color-surface);
}
.btn-outline:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
  background: var(--color-primary-50);
}

.btn-ghost {
  color: var(--color-text-secondary);
  padding: 8px 12px;
}
.btn-ghost:hover {
  color: var(--color-primary);
  background: var(--color-primary-50);
}

.btn-lg {
  padding: 14px 28px;
  font-size: 16px;
  border-radius: var(--radius-lg);
}

.btn-sm {
  padding: 6px 12px;
  font-size: 13px;
}

.btn-full {
  width: 100%;
}

/* ---- Section Headers ---- */
.section-header {
  text-align: center;
  max-width: 640px;
  margin: 0 auto 56px;
}

.section-tag {
  display: inline-block;
  padding: 4px 14px;
  border-radius: var(--radius-full);
  background: var(--color-primary-50);
  color: var(--color-primary);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.5px;
  text-transform: uppercase;
  margin-bottom: 16px;
}

.section-header h2 {
  font-size: 36px;
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 16px;
  color: var(--color-text);
}

.section-header p {
  font-size: 17px;
  color: var(--color-text-secondary);
  line-height: 1.7;
}

/* ================================================
   NAVIGATION
   ================================================ */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--nav-height);
  z-index: 1000;
  background: rgba(255, 255, 255, 0.8);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid transparent;
  transition: all var(--transition-normal);
}

.navbar.scrolled {
  border-bottom-color: var(--color-border);
  box-shadow: var(--shadow-sm);
}

.nav-container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 24px;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 20px;
  font-weight: 700;
  color: var(--color-text);
}

.logo-icon {
  width: 36px;
  height: 36px;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
}

.nav-links a {
  font-size: 14px;
  font-weight: 500;
  color: var(--color-text-secondary);
  transition: color var(--transition-fast);
}

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

.nav-cta {
  padding: 8px 20px;
  border-radius: var(--radius-md);
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
  color: #fff;
  font-size: 14px;
  font-weight: 500;
  transition: all var(--transition-normal);
}

.nav-cta:hover {
  box-shadow: 0 4px 12px rgba(59, 130, 246, 0.3);
  transform: translateY(-1px);
}

.mobile-menu-btn {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 4px;
}

.mobile-menu-btn span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--color-text);
  border-radius: 2px;
  transition: all var(--transition-fast);
}

/* ================================================
   HERO SECTION
   ================================================ */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: calc(var(--nav-height) + 40px) 24px 80px;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  pointer-events: none;
}

.hero-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(59, 130, 246, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(59, 130, 246, 0.03) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse at center, black 30%, transparent 70%);
  -webkit-mask-image: radial-gradient(ellipse at center, black 30%, transparent 70%);
}

.hero-glow {
  position: absolute;
  border-radius: 50%;
  filter: blur(120px);
  opacity: 0.4;
}

.hero-glow-1 {
  width: 600px;
  height: 600px;
  background: var(--color-primary);
  top: -200px;
  right: -100px;
  opacity: 0.12;
}

.hero-glow-2 {
  width: 500px;
  height: 500px;
  background: var(--color-accent);
  bottom: -150px;
  left: -100px;
  opacity: 0.1;
}

.hero-content {
  text-align: center;
  max-width: 800px;
  position: relative;
  z-index: 1;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px;
  border-radius: var(--radius-full);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  font-size: 13px;
  font-weight: 500;
  color: var(--color-text-secondary);
  margin-bottom: 24px;
  box-shadow: var(--shadow-sm);
}

.badge-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--color-success);
  animation: pulse-dot 2s infinite;
}

@keyframes pulse-dot {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}

.hero h1 {
  font-size: clamp(40px, 6vw, 68px);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -1.5px;
  margin-bottom: 24px;
}

.gradient-text {
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: 18px;
  line-height: 1.7;
  color: var(--color-text-secondary);
  max-width: 600px;
  margin: 0 auto 36px;
}

.hero-actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  margin-bottom: 56px;
}

.hero-stats {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 40px;
}

.stat {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.stat-number {
  font-size: 28px;
  font-weight: 800;
  color: var(--color-text);
}

.stat-label {
  font-size: 13px;
  color: var(--color-text-muted);
  font-weight: 500;
}

.stat-divider {
  width: 1px;
  height: 40px;
  background: var(--color-border);
}

/* ================================================
   SERVICES SECTION
   ================================================ */
.services {
  padding: 100px 0;
  background: var(--color-surface);
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 20px;
}

.service-card {
  padding: 28px;
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border-light);
  background: var(--color-bg);
  transition: all var(--transition-normal);
  cursor: default;
}

.service-card:hover {
  border-color: var(--color-primary-light);
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.service-icon {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
}

.service-icon svg {
  width: 22px;
  height: 22px;
}

.service-icon-security { background: #FEE2E2; color: #DC2626; }
.service-icon-security svg { stroke: #DC2626; }
.service-icon-performance { background: #FEF3C7; color: #D97706; }
.service-icon-performance svg { stroke: #D97706; }
.service-icon-memory { background: #DBEAFE; color: #2563EB; }
.service-icon-memory svg { stroke: #2563EB; }
.service-icon-quality { background: #D1FAE5; color: #059669; }
.service-icon-quality svg { stroke: #059669; }
.service-icon-legacy { background: #E0E7FF; color: #4F46E5; }
.service-icon-legacy svg { stroke: #4F46E5; }
.service-icon-refactor { background: #FCE7F3; color: #DB2777; }
.service-icon-refactor svg { stroke: #DB2777; }
.service-icon-dependency { background: #CCFBF1; color: #0D9488; }
.service-icon-dependency svg { stroke: #0D9488; }
.service-icon-debt { background: #FED7AA; color: #EA580C; }
.service-icon-debt svg { stroke: #EA580C; }
.service-icon-docs { background: #E0E7FF; color: #4338CA; }
.service-icon-docs svg { stroke: #4338CA; }
.service-icon-arch { background: #DDD6FE; color: #7C3AED; }
.service-icon-arch svg { stroke: #7C3AED; }

.service-card h3 {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 8px;
  color: var(--color-text);
}

.service-card p {
  font-size: 14px;
  color: var(--color-text-secondary);
  line-height: 1.6;
}

/* ================================================
   TECHNOLOGIES SECTION
   ================================================ */
.technologies {
  padding: 80px 0;
}

.tech-grid {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 24px;
}

.tech-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  padding: 20px 28px;
  border-radius: var(--radius-lg);
  background: var(--color-surface);
  border: 1px solid var(--color-border-light);
  transition: all var(--transition-normal);
  min-width: 120px;
}

.tech-item:hover {
  border-color: var(--color-primary-light);
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.tech-icon {
  width: 48px;
  height: 48px;
}

.tech-item span {
  font-size: 14px;
  font-weight: 500;
  color: var(--color-text-secondary);
}

/* ================================================
   ANALYSIS SECTION
   ================================================ */
.analyze {
  padding: 100px 0;
  background: var(--color-surface);
}

/* Steps Indicator */
.steps-indicator {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0;
  margin-bottom: 48px;
  padding: 0 20px;
}

.step {
  display: flex;
  align-items: center;
  gap: 10px;
  opacity: 0.4;
  transition: all var(--transition-normal);
}

.step.active {
  opacity: 1;
}

.step.completed {
  opacity: 0.7;
}

.step-circle {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  border: 2px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  font-weight: 600;
  color: var(--color-text-muted);
  transition: all var(--transition-normal);
}

.step.active .step-circle {
  border-color: var(--color-primary);
  background: var(--color-primary);
  color: #fff;
}

.step.completed .step-circle {
  border-color: var(--color-success);
  background: var(--color-success);
  color: #fff;
}

.step span {
  font-size: 14px;
  font-weight: 500;
  color: var(--color-text-secondary);
}

.step.active span {
  color: var(--color-text);
}

.step-line {
  width: 60px;
  height: 2px;
  background: var(--color-border);
  margin: 0 12px;
}

/* Step Content */
.analysis-step {
  max-width: 900px;
  margin: 0 auto;
}

.step-content {
  background: var(--color-bg);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-xl);
  padding: 40px;
}

.step-content h3 {
  font-size: 22px;
  font-weight: 700;
  margin-bottom: 8px;
}

.step-description {
  color: var(--color-text-secondary);
  margin-bottom: 28px;
}

/* Service Selection */
.service-selection-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 12px;
  margin-bottom: 20px;
}

.service-checkbox {
  position: relative;
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 16px;
  border-radius: var(--radius-md);
  border: 1.5px solid var(--color-border);
  background: var(--color-surface);
  cursor: pointer;
  transition: all var(--transition-fast);
  user-select: none;
}

.service-checkbox:hover {
  border-color: var(--color-primary-light);
  background: var(--color-primary-50);
}

.service-checkbox input {
  position: absolute;
  opacity: 0;
  width: 0;
  height: 0;
}

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

.service-checkbox input:checked ~ .checkbox-custom svg {
  opacity: 1;
  transform: scale(1);
}

.service-checkbox input:checked ~ .checkbox-label {
  color: var(--color-primary-dark);
  font-weight: 600;
}

.service-checkbox input:checked + .checkbox-custom + .checkbox-icon + .checkbox-label {
  color: var(--color-primary-dark);
  font-weight: 600;
}

.service-checkbox:has(input:checked) {
  border-color: var(--color-primary);
  background: var(--color-primary-50);
}

.checkbox-custom {
  width: 20px;
  height: 20px;
  min-width: 20px;
  border: 2px solid var(--color-border);
  border-radius: 4px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-fast);
}

.checkbox-custom svg {
  width: 12px;
  height: 12px;
  stroke: #fff;
  opacity: 0;
  transform: scale(0.5);
  transition: all var(--transition-fast);
}

.checkbox-icon {
  display: none;
}

.checkbox-label {
  font-size: 14px;
  font-weight: 500;
  color: var(--color-text);
  transition: all var(--transition-fast);
}

.selection-actions {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 24px;
}

.selection-count {
  margin-left: auto;
  font-size: 13px;
  color: var(--color-text-muted);
  font-weight: 500;
}

/* Analysis Options */
.analysis-options {
  display: flex;
  gap: 24px;
  margin-bottom: 28px;
  padding: 20px;
  border-radius: var(--radius-md);
  background: var(--color-surface);
  border: 1px solid var(--color-border-light);
}

.option-group {
  flex: 1;
}

.option-label {
  display: block;
  font-size: 13px;
  font-weight: 600;
  color: var(--color-text-secondary);
  margin-bottom: 8px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.option-select {
  width: 100%;
  padding: 10px 14px;
  border-radius: var(--radius-sm);
  border: 1.5px solid var(--color-border);
  background: var(--color-surface);
  color: var(--color-text);
  font-size: 14px;
  outline: none;
  transition: border-color var(--transition-fast);
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%2394A3B8' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 12px center;
  padding-right: 36px;
}

.option-select:focus {
  border-color: var(--color-primary);
}

.toggle-group {
  display: flex;
  gap: 4px;
  background: var(--color-surface-alt);
  border-radius: var(--radius-sm);
  padding: 3px;
}

.toggle-btn {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 8px 14px;
  border-radius: 4px;
  font-size: 14px;
  font-weight: 500;
  color: var(--color-text-secondary);
  transition: all var(--transition-fast);
}

.toggle-btn.active {
  background: var(--color-surface);
  color: var(--color-primary);
  box-shadow: var(--shadow-sm);
}

.toggle-btn:hover:not(.active) {
  color: var(--color-text);
}

/* ================================================
   FILE UPLOAD
   ================================================ */
.upload-zone {
  border: 2px dashed var(--color-border);
  border-radius: var(--radius-lg);
  padding: 48px;
  text-align: center;
  transition: all var(--transition-normal);
  background: var(--color-surface);
  cursor: pointer;
}

.upload-zone:hover,
.upload-zone.drag-over {
  border-color: var(--color-primary);
  background: var(--color-primary-50);
}

.upload-zone.drag-over {
  transform: scale(1.01);
}

.upload-icon {
  width: 56px;
  height: 56px;
  margin: 0 auto 16px;
  padding: 14px;
  border-radius: var(--radius-lg);
  background: var(--color-primary-50);
  color: var(--color-primary);
}

.upload-icon svg {
  width: 100%;
  height: 100%;
  stroke: var(--color-primary);
}

.upload-text {
  font-size: 16px;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 4px;
}

.upload-subtext {
  font-size: 14px;
  color: var(--color-text-muted);
  margin-bottom: 12px;
}

.upload-hint {
  font-size: 13px;
  color: var(--color-text-muted);
  margin-top: 12px;
}

/* File Preview */
.file-preview {
  margin-top: 16px;
  padding: 16px;
  border-radius: var(--radius-md);
  background: var(--color-surface);
  border: 1px solid var(--color-border-light);
}

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

.file-icon {
  width: 40px;
  height: 40px;
  padding: 8px;
  border-radius: var(--radius-sm);
  background: var(--color-primary-50);
}

.file-icon svg {
  stroke: var(--color-primary);
}

.file-details {
  flex: 1;
}

.file-name {
  display: block;
  font-size: 14px;
  font-weight: 600;
  color: var(--color-text);
}

.file-size {
  display: block;
  font-size: 13px;
  color: var(--color-text-muted);
}

/* Upload Progress */
.upload-progress {
  margin-top: 12px;
  display: flex;
  align-items: center;
  gap: 12px;
}

.progress-bar {
  flex: 1;
  height: 6px;
  background: var(--color-surface-alt);
  border-radius: var(--radius-full);
  overflow: hidden;
}

.progress-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
  border-radius: var(--radius-full);
  transition: width var(--transition-normal);
  width: 0%;
}

.progress-animated {
  animation: progress-indeterminate 2s infinite;
  width: 100% !important;
  background: linear-gradient(
    90deg,
    transparent 0%,
    var(--color-primary) 30%,
    var(--color-accent) 60%,
    transparent 100%
  );
  background-size: 200% 100%;
}

@keyframes progress-indeterminate {
  0% { background-position: -200% 0; }
  100% { background-position: 200% 0; }
}

.progress-text {
  font-size: 13px;
  font-weight: 600;
  color: var(--color-primary);
  min-width: 36px;
}

/* Step Actions */
.step-actions {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 24px;
}

/* ================================================
   ANALYSIS LOADING
   ================================================ */
.analysis-loading {
  text-align: center;
  padding: 60px 40px;
  background: var(--color-bg);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-xl);
}

.loading-animation {
  position: relative;
  width: 80px;
  height: 80px;
  margin: 0 auto 24px;
}

.loading-ring {
  position: absolute;
  inset: 0;
  animation: spin 3s linear infinite;
}

.ring-segment {
  position: absolute;
  width: 100%;
  height: 100%;
  border: 3px solid transparent;
  border-radius: 50%;
}

.ring-segment:nth-child(1) {
  border-top-color: var(--color-primary);
  animation: spin 1.5s linear infinite;
}

.ring-segment:nth-child(2) {
  border-right-color: var(--color-accent);
  animation: spin 2s linear infinite reverse;
}

.ring-segment:nth-child(3) {
  border-bottom-color: var(--color-primary-light);
  animation: spin 2.5s linear infinite;
}

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

.loading-icon {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 28px;
  height: 28px;
  color: var(--color-primary);
}

.loading-icon svg {
  stroke: var(--color-primary);
}

.analysis-loading h3 {
  font-size: 22px;
  font-weight: 700;
  margin-bottom: 8px;
}

.loading-status {
  color: var(--color-text-secondary);
  font-size: 15px;
  margin-bottom: 24px;
}

.loading-progress {
  max-width: 400px;
  margin: 0 auto;
}

.loading-services {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 8px;
  margin-top: 16px;
}

.loading-service-tag {
  padding: 4px 12px;
  border-radius: var(--radius-full);
  font-size: 12px;
  font-weight: 500;
  background: var(--color-surface-alt);
  color: var(--color-text-muted);
  transition: all var(--transition-normal);
}

.loading-service-tag.active {
  background: var(--color-primary-50);
  color: var(--color-primary);
}

.loading-service-tag.done {
  background: #D1FAE5;
  color: #059669;
}

/* ================================================
   ANALYSIS RESULTS
   ================================================ */
.results-summary {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  margin-bottom: 24px;
}

.summary-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  padding: 20px;
  border-radius: var(--radius-lg);
  background: var(--color-bg);
  border: 1px solid var(--color-border-light);
}

.summary-icon {
  width: 36px;
  height: 36px;
  padding: 8px;
  border-radius: var(--radius-sm);
  margin-bottom: 4px;
}

.summary-total .summary-icon { background: #DBEAFE; }
.summary-total .summary-icon svg { stroke: #2563EB; }
.summary-loc .summary-icon { background: #D1FAE5; }
.summary-loc .summary-icon svg { stroke: #059669; }
.summary-issues .summary-icon { background: #FEF3C7; }
.summary-issues .summary-icon svg { stroke: #D97706; }
.summary-critical .summary-icon { background: #FEE2E2; }
.summary-critical .summary-icon svg { stroke: #DC2626; }

.summary-value {
  font-size: 28px;
  font-weight: 800;
  color: var(--color-text);
}

.summary-label {
  font-size: 13px;
  color: var(--color-text-muted);
  font-weight: 500;
}

/* Results Toolbar */
.results-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 16px;
  gap: 12px;
  flex-wrap: wrap;
}

.results-tabs {
  display: flex;
  gap: 4px;
  overflow-x: auto;
  padding-bottom: 4px;
  flex: 1;
}

.result-tab {
  padding: 8px 16px;
  border-radius: var(--radius-sm);
  font-size: 13px;
  font-weight: 500;
  color: var(--color-text-secondary);
  cursor: pointer;
  white-space: nowrap;
  transition: all var(--transition-fast);
  border: none;
  background: none;
}

.result-tab:hover {
  background: var(--color-surface-alt);
  color: var(--color-text);
}

.result-tab.active {
  background: var(--color-primary-50);
  color: var(--color-primary);
  font-weight: 600;
}

.results-actions {
  display: flex;
  gap: 8px;
}

.export-dropdown {
  position: relative;
}

.dropdown-menu {
  position: absolute;
  top: 100%;
  right: 0;
  margin-top: 4px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  overflow: hidden;
  z-index: 100;
  min-width: 160px;
}

.dropdown-menu button {
  display: block;
  width: 100%;
  padding: 10px 16px;
  text-align: left;
  font-size: 14px;
  color: var(--color-text);
  transition: background var(--transition-fast);
}

.dropdown-menu button:hover {
  background: var(--color-surface-alt);
}

/* Results Content */
.results-content {
  background: var(--color-bg);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.result-panel {
  display: none;
  padding: 28px;
}

.result-panel.active {
  display: block;
  animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

.result-panel h4 {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 16px;
  color: var(--color-text);
}

/* Issue Cards */
.issue-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.issue-card {
  padding: 16px;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border-light);
  background: var(--color-surface);
}

.issue-header {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 8px;
}

.issue-severity {
  padding: 2px 8px;
  border-radius: var(--radius-full);
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.severity-critical {
  background: #FEE2E2;
  color: #DC2626;
}

.severity-high {
  background: #FED7AA;
  color: #EA580C;
}

.severity-medium {
  background: #FEF3C7;
  color: #D97706;
}

.severity-low {
  background: #D1FAE5;
  color: #059669;
}

.severity-info {
  background: #DBEAFE;
  color: #2563EB;
}

.issue-title {
  font-size: 15px;
  font-weight: 600;
  color: var(--color-text);
}

.issue-location {
  font-size: 13px;
  font-family: var(--font-mono);
  color: var(--color-text-muted);
  margin-left: auto;
}

.issue-description {
  font-size: 14px;
  color: var(--color-text-secondary);
  line-height: 1.6;
  margin-bottom: 8px;
}

.issue-recommendation {
  font-size: 14px;
  padding: 10px 14px;
  border-radius: var(--radius-sm);
  background: var(--color-primary-50);
  color: var(--color-primary-900);
  border-left: 3px solid var(--color-primary);
}

.issue-recommendation strong {
  display: block;
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--color-primary);
  margin-bottom: 4px;
}

/* Code Block */
.code-block {
  margin: 12px 0;
  border-radius: var(--radius-md);
  overflow: hidden;
}

.code-block-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 8px 14px;
  background: #1E293B;
  font-size: 13px;
  color: #94A3B8;
}

.code-block pre {
  margin: 0;
  padding: 14px;
  background: #0F172A;
  overflow-x: auto;
  font-size: 13px;
  line-height: 1.6;
}

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

/* Metric Bars */
.metric-item {
  margin-bottom: 16px;
}

.metric-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 6px;
}

.metric-label {
  font-size: 14px;
  font-weight: 500;
  color: var(--color-text);
}

.metric-value {
  font-size: 14px;
  font-weight: 700;
  color: var(--color-text);
}

.metric-bar {
  height: 8px;
  background: var(--color-surface-alt);
  border-radius: var(--radius-full);
  overflow: hidden;
}

.metric-fill {
  height: 100%;
  border-radius: var(--radius-full);
  transition: width 1s ease;
}

.metric-fill.good { background: var(--color-success); }
.metric-fill.warning { background: var(--color-warning); }
.metric-fill.danger { background: var(--color-danger); }

/* Mermaid Diagrams */
.diagram-container {
  padding: 20px;
  background: var(--color-surface);
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border-light);
  overflow-x: auto;
}

.diagram-container .mermaid {
  text-align: center;
}

/* Results Footer */
.results-footer {
  display: flex;
  justify-content: center;
  margin-top: 32px;
}

/* ================================================
   DEMO SECTION
   ================================================ */
.demo-section {
  padding: 80px 0;
}

.demo-cta {
  text-align: center;
  padding: 56px 40px;
  border-radius: var(--radius-xl);
  background: linear-gradient(135deg, var(--color-primary-900) 0%, #1E1B4B 100%);
  color: #fff;
}

.demo-cta h2 {
  font-size: 32px;
  font-weight: 800;
  margin-bottom: 12px;
}

.demo-cta p {
  font-size: 17px;
  color: rgba(255, 255, 255, 0.7);
  max-width: 520px;
  margin: 0 auto 28px;
  line-height: 1.7;
}

.demo-cta .btn-primary {
  background: #fff;
  color: var(--color-primary-900);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
}

.demo-cta .btn-primary:hover {
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.3);
}

/* ================================================
   FOOTER
   ================================================ */
.footer {
  padding: 40px 0;
  border-top: 1px solid var(--color-border-light);
}

.footer-content {
  text-align: center;
}

.footer-brand {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 18px;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 8px;
}

.footer-brand .logo-icon {
  width: 28px;
  height: 28px;
}

.footer-text {
  font-size: 14px;
  color: var(--color-text-secondary);
  margin-bottom: 8px;
}

.footer-copy {
  font-size: 13px;
  color: var(--color-text-muted);
}

.footer-copy a {
  color: var(--color-primary);
}

/* ================================================
   TOAST NOTIFICATIONS
   ================================================ */
.toast-container {
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: 10000;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.toast {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 14px 20px;
  border-radius: var(--radius-md);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-xl);
  font-size: 14px;
  animation: toast-in 0.3s ease;
  max-width: 360px;
}

.toast.toast-error {
  border-left: 4px solid var(--color-danger);
}

.toast.toast-success {
  border-left: 4px solid var(--color-success);
}

.toast.toast-info {
  border-left: 4px solid var(--color-info);
}

@keyframes toast-in {
  from {
    opacity: 0;
    transform: translateX(100%);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes toast-out {
  from {
    opacity: 1;
    transform: translateX(0);
  }
  to {
    opacity: 0;
    transform: translateX(100%);
  }
}

/* ================================================
   RESPONSIVE
   ================================================ */
@media (max-width: 1024px) {
  .services-grid {
    grid-template-columns: repeat(2, 1fr);
  }

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

@media (max-width: 768px) {
  .nav-links {
    display: none;
    position: absolute;
    top: var(--nav-height);
    left: 0;
    right: 0;
    flex-direction: column;
    background: var(--color-surface);
    border-bottom: 1px solid var(--color-border);
    padding: 16px 24px;
    gap: 12px;
    box-shadow: var(--shadow-lg);
  }

  .nav-links.open {
    display: flex;
  }

  .nav-cta {
    display: none;
  }

  .mobile-menu-btn {
    display: flex;
  }

  .mobile-menu-btn.open span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
  }
  .mobile-menu-btn.open span:nth-child(2) {
    opacity: 0;
  }
  .mobile-menu-btn.open span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
  }

  .hero h1 {
    font-size: 36px;
  }

  .hero-subtitle {
    font-size: 16px;
  }

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

  .hero-stats {
    gap: 20px;
  }

  .stat-number {
    font-size: 22px;
  }

  .section-header h2 {
    font-size: 28px;
  }

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

  .service-selection-grid {
    grid-template-columns: 1fr;
  }

  .analysis-options {
    flex-direction: column;
    gap: 16px;
  }

  .step-content {
    padding: 24px;
  }

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

  .results-toolbar {
    flex-direction: column;
    align-items: stretch;
  }

  .results-tabs {
    overflow-x: auto;
  }

  .step span {
    display: none;
  }

  .step-line {
    width: 30px;
  }
}

@media (max-width: 480px) {
  .hero {
    padding: calc(var(--nav-height) + 20px) 16px 60px;
  }

  .container {
    padding: 0 16px;
  }

  .hero h1 {
    font-size: 30px;
  }

  .tech-grid {
    gap: 12px;
  }

  .tech-item {
    padding: 14px 18px;
    min-width: 100px;
  }

  .upload-zone {
    padding: 32px 20px;
  }

  .results-summary {
    grid-template-columns: 1fr 1fr;
    gap: 10px;
  }

  .summary-value {
    font-size: 22px;
  }
}