/*
Copyright (c) 2025 Contributors to the Eclipse Foundation

See the NOTICE file(s) distributed with this work for additional
information regarding copyright ownership.

This program and the accompanying materials are made available under the
terms of the Apache Software License 2.0 which is available at
https://www.apache.org/licenses/LICENSE-2.0, or the MIT license
which is available at https://opensource.org/licenses/MIT.

SPDX-License-Identifier: Apache-2.0 OR MIT
*/

:root {
  /* Light theme colors */
  --color-background: #ffffff;
  --color-background-secondary: #f8f9fa;
  --color-background-hover: #f1f3f4;
  --color-background-border: #e8eaed;
  --color-foreground-primary: #1a1c1e;
  --color-foreground-secondary: #5f6368;
  --color-foreground-muted: #9aa0a6;
  --color-brand: #4b5563;
  --color-brand-hover: #374151;
  --color-brand-light: #6b7280;
  --color-accent: #0f766e;
  --color-accent-hover: #0d9488;
  --color-success: #16a34a;
  --color-warning: #ea580c;
  --color-danger: #dc2626;
  --color-info: #0891b2;
  
  /* Shadows */
  --shadow-small: 0 1px 3px rgba(0, 0, 0, 0.12), 0 1px 2px rgba(0, 0, 0, 0.24);
  --shadow-medium: 0 4px 6px rgba(0, 0, 0, 0.07), 0 1px 3px rgba(0, 0, 0, 0.06);
  --shadow-large: 0 10px 15px rgba(0, 0, 0, 0.1), 0 4px 6px rgba(0, 0, 0, 0.05);
  
  /* Layout */
  --content-max-width: 900px;
  
  /* Typography */
  --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-mono: 'SF Mono', Monaco, 'Cascadia Code', 'Roboto Mono', Consolas, 'Courier New', monospace;
  --font-size-xs: 0.75rem;
  --font-size-sm: 0.875rem;
  --font-size-base: 1rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.25rem;
  --font-size-2xl: 1.5rem;
  --font-size-3xl: 1.875rem;
  
  /* Border radius */
  --radius-sm: 0.375rem;
  --radius-base: 0.5rem;
  --radius-lg: 0.75rem;
}

[data-theme="dark"] {
  --color-background: #0f1419;
  --color-background-secondary: #1c2128;
  --color-background-hover: #262c36;
  --color-background-border: #373e47;
  --color-foreground-primary: #e6edf3;
  --color-foreground-secondary: #9198a1;
  --color-foreground-muted: #656c76;
  --color-brand: #6b7280;
  --color-brand-hover: #9ca3af;
  --color-brand-light: #d1d5db;
  --color-accent: #14b8a6;
  --color-accent-hover: #06b6d4;
  --color-success: #22c55e;
  --color-warning: #f97316;
  --color-danger: #ef4444;
  --color-info: #06b6d4;
}

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

body {
  font-family: var(--font-family);
  line-height: 1.6;
  color: var(--color-foreground-primary);
  background-color: var(--color-background);
  font-size: var(--font-size-base);
  min-height: 100vh;
}

/* Theme toggle */
.theme-toggle {
  position: fixed;
  top: 1rem;
  right: 1rem;
  z-index: 1000;
  background: var(--color-background-secondary);
  border: 1px solid var(--color-background-border);
  border-radius: var(--radius-base);
  padding: 0.75rem;
  cursor: pointer;
  font-size: var(--font-size-lg);
  box-shadow: var(--shadow-medium);
  transition: all 0.2s ease;
}

.theme-toggle:hover {
  background: var(--color-background-hover);
  transform: scale(1.05);
}

/* Main content */
.main-content {
  padding: 2rem;
  width: 100%;
}

.content-wrapper {
  max-width: var(--content-max-width);
  margin: 0 auto;
}

/* Page header */
.page-header {
  margin-bottom: 3rem;
  text-align: center;
}

.page-title {
  font-size: var(--font-size-3xl);
  font-weight: 700;
  color: var(--color-foreground-primary);
  margin-bottom: 1rem;
}

.page-description {
  font-size: var(--font-size-lg);
  color: var(--color-foreground-secondary);
  margin-bottom: 1.5rem;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.header-badges {
  display: flex;
  justify-content: center;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.badge {
  padding: 0.25rem 0.75rem;
  border-radius: 9999px;
  font-size: var(--font-size-sm);
  font-weight: 500;
}

.badge-success { background: var(--color-success); color: white; }
.badge-info { background: var(--color-info); color: white; }
.badge-secondary { background: var(--color-foreground-muted); color: white; }

/* Language sections */
.language-sections {
  display: grid;
  gap: 2rem;
}

.language-section {
  background: var(--color-background);
  border: 1px solid var(--color-background-border);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  box-shadow: var(--shadow-small);
}

.language-header {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1.5rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--color-background-border);
}

.language-icon-wrapper {
  flex-shrink: 0;
}

.language-icon {
  width: 2.5rem;
  height: 2.5rem;
  border-radius: var(--radius-base);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  flex-shrink: 0;
  font-size: var(--font-size-lg);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
  color: var(--color-foreground-primary);
  background: var(--color-background);
  border: 1px solid var(--color-background-border);
  padding: 0.4rem;
}

.language-icon img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

[data-theme="dark"] .language-icon {
  background: var(--color-background-secondary);
  border-color: var(--color-background-border);
}

[data-theme="dark"] .language-icon img[alt="Rust"] {
  filter: invert(1) brightness(0.8);
}

.python-icon:not(:has(img)) { 
  background: #3776ab; 
  color: white;
}
.c-icon:not(:has(img)) { 
  background: #a8b9cc; 
  color: white;
}
.cxx-icon:not(:has(img)) { 
  background: #00599c; 
  color: white;
}
.rust-icon:not(:has(img)) { 
  background: #ce422b; 
  color: white;
}

.language-info {
  flex: 1;
}

.language-title {
  font-size: var(--font-size-xl);
  font-weight: 600;
  color: var(--color-foreground-primary);
  margin-bottom: 0.25rem;
}

.language-description {
  color: var(--color-foreground-secondary);
  font-size: var(--font-size-sm);
  line-height: 1.5;
}

/* Compact version */
.version-section {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.version-label {
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--color-foreground-secondary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.version-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.version-tag {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 1rem;
  background: var(--color-background-secondary);
  color: var(--color-foreground-primary);
  text-decoration: none;
  border-radius: var(--radius-base);
  font-weight: 500;
  font-size: var(--font-size-sm);
  border: 1px solid var(--color-background-border);
  transition: all 0.2s ease;
}

.version-tag:hover {
  background: var(--color-brand);
  color: white;
  border-color: var(--color-brand);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(37, 99, 235, 0.25);
}

.version-tag-latest {
  background: var(--color-brand);
  color: white;
  border-color: var(--color-brand);
  font-weight: 600;
  box-shadow: 0 2px 8px rgba(37, 99, 235, 0.15);
}

.version-tag-latest:hover {
  background: var(--color-brand-hover);
  border-color: var(--color-brand-hover);
  transform: translateY(-2px);
  box-shadow: 0 4px 16px rgba(37, 99, 235, 0.3);
}

.version-name {
  font-family: var(--font-mono);
  font-size: var(--font-size-sm);
}

.version-latest-badge {
  background: rgba(255, 255, 255, 0.25);
  color: white;
  padding: 0.125rem 0.375rem;
  border-radius: 9999px;
  font-size: var(--font-size-xs);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.025em;
}

.external-link-icon {
  font-size: var(--font-size-sm);
  opacity: 0.7;
  transition: opacity 0.2s ease;
}

.version-tag:hover .external-link-icon {
  opacity: 1;
}

.no-versions {
  padding: 1rem;
  text-align: center;
  background: var(--color-background-secondary);
  border: 1px dashed var(--color-background-border);
  border-radius: var(--radius-base);
  opacity: 0.7;
}

.no-versions-text {
  color: var(--color-foreground-muted);
  font-style: italic;
  font-size: var(--font-size-sm);
}

/* Footer */
.page-footer {
  margin-top: 4rem;
  padding: 2rem;
  border-top: 1px solid var(--color-background-border);
  background: var(--color-background-secondary);
}

.footer-content {
  max-width: var(--content-max-width);
  margin: 0 auto;
  text-align: center;
  color: var(--color-foreground-secondary);
  font-size: var(--font-size-sm);
}

.footer-content p + p {
  margin-top: 0.5rem;
}

/* Responsive design */
@media (max-width: 768px) {
  .main-content {
    padding: 1rem;
  }
  
  .page-title {
    font-size: var(--font-size-2xl);
  }
  
  .language-header {
    flex-direction: column;
    text-align: center;
    gap: 0.75rem;
  }
  
  .version-tags {
    justify-content: center;
  }
}

@media (max-width: 480px) {
  .main-content {
    padding: 1rem 0.5rem;
  }
  
  .language-section {
    padding: 1rem;
  }
  
  .page-header {
    margin-bottom: 2rem;
  }
  
  .version-tag {
    font-size: var(--font-size-xs);
    padding: 0.375rem 0.75rem;
  }
  
}

/* Focus states */
.theme-toggle:focus,
.version-tag:focus {
  outline: 2px solid var(--color-brand);
  outline-offset: 2px;
}

/* Print styles */
@media print {
  .theme-toggle {
    display: none;
  }
}