/* ============================================================================
   NICEOS UPDATE PORTAL v4 — MODERN CORPORATE DESIGN
   Pixel-perfect, accessible, performant
   ============================================================================ */

:root {
  --color-primary: #1f2937;
  --color-primary-light: #374151;
  --color-accent: #3b82f6;
  --color-accent-light: #60a5fa;
  --color-success: #10b981;
  --color-warning: #f59e0b;
  --color-error: #ef4444;
  --color-critical: #dc2626;
  --color-bg: #ffffff;
  --color-surface: #f9fafb;
  --color-border: #e5e7eb;
  --color-text: #1f2937;
  --color-text-secondary: #6b7280;
  --color-text-tertiary: #9ca3af;
  
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  --spacing-2xl: 3rem;
  
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-mono: "SF Mono", Monaco, "Cascadia Code", "Roboto Mono", Consolas, "Courier New", monospace;
  
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
  
  --z-base: 1;
  --z-dropdown: 10;
  --z-modal: 20;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  background: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-sans);
  line-height: 1.6;
  font-weight: 400;
}

a {
  color: var(--color-accent);
  text-decoration: none;
  transition: color 0.2s ease;
}

a:hover { color: var(--color-accent-light); }
a:active { color: var(--color-accent); }

/* HEADER */
.header {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
  color: white;
  padding: var(--spacing-2xl) 0;
  border-bottom: 1px solid rgba(0, 0, 0, 0.1);
  box-shadow: var(--shadow-md);
}

.header-inner {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 var(--spacing-lg);
}

.header .kicker {
  font-size: 0.875rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  opacity: 0.8;
  margin-bottom: var(--spacing-sm);
}

.header h1 {
  font-size: 2.25rem;
  font-weight: 700;
  margin-bottom: var(--spacing-sm);
  letter-spacing: -0.02em;
}

.header p {
  font-size: 1rem;
  opacity: 0.9;
  margin-bottom: var(--spacing-lg);
  max-width: 600px;
}

.lang-switch {
  display: flex;
  gap: var(--spacing-md);
  align-items: center;
  flex-wrap: wrap;
  font-size: 0.875rem;
}

.lang-switch a {
  color: white;
  padding: var(--spacing-sm) var(--spacing-md);
  border: 1px solid rgba(255, 255, 255, 0.3);
  border-radius: var(--radius-md);
  transition: all 0.2s ease;
}

.lang-switch a:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: white;
}

.pill {
  background: rgba(255, 255, 255, 0.15);
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: 999px;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  white-space: nowrap;
}

/* MAIN */
.main {
  max-width: 1400px;
  margin: 0 auto;
  padding: var(--spacing-2xl) var(--spacing-lg);
}

/* SUMMARY GRID */
.summary-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-2xl);
}

.summary-card {
  background: white;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  text-align: center;
  transition: all 0.3s ease;
  box-shadow: var(--shadow-sm);
}

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

.summary-card .num {
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--color-accent);
  margin-bottom: var(--spacing-sm);
  font-variant-numeric: tabular-nums;
}

.summary-card .label {
  font-size: 0.875rem;
  color: var(--color-text-secondary);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* TOOLBAR */
.toolbar {
  display: flex;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-xl);
  flex-wrap: wrap;
  align-items: center;
}

.toolbar input,
.toolbar select {
  padding: var(--spacing-sm) var(--spacing-md);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  font-family: var(--font-sans);
  font-size: 0.9375rem;
  color: var(--color-text);
  background: white;
  transition: all 0.2s ease;
}

.toolbar input:focus,
.toolbar select:focus {
  outline: none;
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

.toolbar input::placeholder {
  color: var(--color-text-tertiary);
}

.toolbar select {
  cursor: pointer;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%231f2937' d='M2 4l4 4 4-4'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right var(--spacing-md) center;
  padding-right: 2rem;
}

/* PAGINATION */
.pager {
  display: flex;
  justify-content: center;
  gap: var(--spacing-md);
  margin: var(--spacing-xl) 0;
  flex-wrap: wrap;
  align-items: center;
}

.pager a, .pager span {
  padding: var(--spacing-sm) var(--spacing-md);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  font-size: 0.875rem;
  font-weight: 500;
  transition: all 0.2s ease;
}

.pager a {
  color: var(--color-accent);
  cursor: pointer;
}

.pager a:hover {
  background: var(--color-surface);
  border-color: var(--color-accent);
}

.pager .current {
  background: var(--color-accent);
  color: white;
  border-color: var(--color-accent);
  font-weight: 600;
}

.pager .disabled {
  color: var(--color-text-tertiary);
  cursor: not-allowed;
  opacity: 0.5;
}

/* CARDS */
[data-card-list] {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-lg);
}

.update-card {
  background: white;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: all 0.3s ease;
  box-shadow: var(--shadow-sm);
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 0;
}

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

/* Card Header */
.card-indicator {
  width: 4px;
  background: var(--color-border);
  transition: all 0.3s ease;
}

.update-card[data-risk="high"] .card-indicator,
.update-card[data-security="true"] .card-indicator {
  background: var(--color-critical);
}

.update-card[data-risk="medium"] .card-indicator {
  background: var(--color-warning);
}

.update-card[data-risk="low"] .card-indicator {
  background: var(--color-success);
}

.card-content {
  padding: var(--spacing-lg);
  min-width: 0;
}

.card-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-md);
  flex-wrap: wrap;
}

.card-title {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  flex-wrap: wrap;
}

.card-package-name {
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--color-text);
}

.card-version {
  font-size: 0.875rem;
  color: var(--color-text-secondary);
  font-family: var(--font-mono);
  background: var(--color-surface);
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: var(--radius-sm);
  white-space: nowrap;
}

.card-badges {
  display: flex;
  gap: var(--spacing-sm);
  flex-wrap: wrap;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-xs);
  padding: 0.25rem 0.5rem;
  font-size: 0.75rem;
  font-weight: 600;
  border-radius: var(--radius-sm);
  white-space: nowrap;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  border: 1px solid transparent;
}

.badge-class-patch { background: rgba(16, 185, 129, 0.1); color: var(--color-success); }
.badge-class-minor { background: rgba(59, 130, 246, 0.1); color: var(--color-accent); }
.badge-class-major { background: rgba(239, 68, 68, 0.1); color: var(--color-error); }
.badge-class-newer { background: rgba(245, 158, 11, 0.1); color: var(--color-warning); }
.badge-class-unknown { background: rgba(156, 163, 175, 0.1); color: var(--color-text-secondary); }

.badge-risk-low { background: rgba(16, 185, 129, 0.1); color: var(--color-success); }
.badge-risk-medium { background: rgba(245, 158, 11, 0.1); color: var(--color-warning); }
.badge-risk-high { background: rgba(239, 68, 68, 0.1); color: var(--color-error); }
.badge-risk-critical { background: rgba(220, 38, 38, 0.1); color: var(--color-critical); }

.badge-security { background: rgba(239, 68, 68, 0.1); color: var(--color-error); border: 1px solid var(--color-error); }
.badge-cve { background: var(--color-critical); color: white; font-weight: 700; }
.badge-distribution { background: var(--color-surface); color: var(--color-text-secondary); }
.badge-qwen { background: rgba(59, 130, 246, 0.1); color: var(--color-accent); }

/* Card Meta */
.card-meta {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-md);
  padding-bottom: var(--spacing-md);
  border-bottom: 1px solid var(--color-border);
  font-size: 0.875rem;
}

.meta-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.meta-label {
  color: var(--color-text-secondary);
  font-weight: 500;
}

.meta-value {
  color: var(--color-text);
  font-weight: 600;
  font-family: var(--font-mono);
}

/* Card Description */
.card-description {
  margin-bottom: var(--spacing-md);
}

.card-summary {
  color: var(--color-text);
  font-size: 0.9375rem;
  line-height: 1.6;
  margin-bottom: var(--spacing-md);
}

/* CVE Section */
.cve-section {
  background: rgba(220, 38, 38, 0.05);
  border-left: 3px solid var(--color-critical);
  padding: var(--spacing-md);
  border-radius: var(--radius-md);
  margin: var(--spacing-md) 0;
}

.cve-section h4 {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-critical);
  margin-bottom: var(--spacing-sm);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.cve-list {
  list-style: none;
  display: grid;
  gap: var(--spacing-sm);
}

.cve-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.875rem;
  padding: var(--spacing-sm);
  background: white;
  border-radius: var(--radius-sm);
  border: 1px solid rgba(220, 38, 38, 0.2);
}

.cve-id {
  font-family: var(--font-mono);
  font-weight: 600;
  color: var(--color-critical);
}

.cve-severity {
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  padding: 0.25rem 0.5rem;
  border-radius: var(--radius-sm);
}

.cve-severity-critical { background: var(--color-critical); color: white; }
.cve-severity-high { background: var(--color-error); color: white; }
.cve-severity-medium { background: var(--color-warning); color: white; }
.cve-severity-low { background: var(--color-success); color: white; }

/* Expandable Sections */
.details-section {
  margin-top: var(--spacing-md);
}

.details-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--spacing-md);
  background: var(--color-surface);
  border-radius: var(--radius-md);
  cursor: pointer;
  user-select: none;
  transition: all 0.2s ease;
  font-weight: 500;
  font-size: 0.9375rem;
}

.details-header:hover {
  background: rgba(59, 130, 246, 0.05);
}

.details-header[open] {
  background: rgba(59, 130, 246, 0.1);
}

.details-content {
  padding: var(--spacing-md);
  border-bottom: 1px solid var(--color-border);
  font-size: 0.9375rem;
  line-height: 1.6;
  color: var(--color-text);
}

.details-content p { margin-bottom: var(--spacing-md); }
.details-content ol, .details-content ul {
  margin-left: var(--spacing-lg);
  margin-bottom: var(--spacing-md);
}

.details-content li { margin-bottom: var(--spacing-sm); }

/* Card Actions */
.card-actions {
  padding: var(--spacing-md);
  background: var(--color-surface);
  border-top: 1px solid var(--color-border);
  display: flex;
  gap: var(--spacing-md);
  justify-content: flex-end;
  flex-wrap: wrap;
}

.card-action {
  padding: var(--spacing-sm) var(--spacing-md);
  font-size: 0.875rem;
  font-weight: 500;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all 0.2s ease;
  color: var(--color-accent);
  background: white;
}

.card-action:hover {
  background: var(--color-accent);
  color: white;
  border-color: var(--color-accent);
}

/* FOOTER */
.footer {
  background: var(--color-surface);
  border-top: 1px solid var(--color-border);
  padding: var(--spacing-xl) var(--spacing-lg);
  text-align: center;
  font-size: 0.875rem;
  color: var(--color-text-secondary);
  margin-top: var(--spacing-2xl);
}

/* UTILITIES */
.hidden { display: none !important; }
.text-muted { color: var(--color-text-tertiary); }
.text-sm { font-size: 0.875rem; }
.text-mono { font-family: var(--font-mono); }
.mono { font-family: var(--font-mono); }

/* RESPONSIVE */
@media (max-width: 768px) {
  .header h1 { font-size: 1.75rem; }
  .header p { font-size: 0.9375rem; }
  
  .summary-grid {
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: var(--spacing-md);
  }
  
  .toolbar {
    flex-direction: column;
    width: 100%;
  }
  
  .toolbar input,
  .toolbar select {
    width: 100%;
  }
  
  .update-card {
    grid-template-columns: 1fr;
  }
  
  .card-indicator {
    height: 4px;
    width: 100%;
  }
  
  .card-meta {
    grid-template-columns: 1fr;
  }
  
  .card-actions {
    justify-content: stretch;
  }
  
  .card-action {
    flex: 1;
    text-align: center;
  }
}

@media (prefers-reduced-motion: reduce) {
  * { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
}