/*
 * Girls Bio Theme – Main Stylesheet
 *
 * This CSS file implements a dark, accessible design using the
 * colour tokens defined in branding/tokens.json.  It sets up
 * typography, layout, navigation, cards and utility classes for
 * bios, display pictures and tools.  All colours meet WCAG
 * contrast requirements for normal text【624210165228150†L40-L47】.  If you
 * extend this file, keep the palette consistent and respect
 * token variables defined in the `:root` scope.
 */

/* CSS custom properties derived from tokens.json */
:root {
  --color-background: #0b0b0c;
  --color-surface: #16171a;
  --color-text: #f6f7f9;
  --color-muted: #c4c6cc;
  --color-accent: #00a9ad;
  --color-accent-secondary: #0bd1d1;
  --color-border: #2a2a2d;
  --color-focus: #4fd1c5;
  --color-error: #e63946;
  --spacing-xs: 4px;
  --spacing-sm: 8px;
  --spacing-md: 16px;
  --spacing-lg: 24px;
  --spacing-xl: 32px;
  --radius-sm: 4px;
  --radius-md: 8px;
  --shadow-card: 0 1px 3px rgba(0, 0, 0, 0.2), 0 1px 2px rgba(0, 0, 0, 0.14);
  --shadow-focus: 0 0 0 3px rgba(79, 209, 197, 0.5);
}

/* Base styles */
html {
  box-sizing: border-box;
  scroll-behavior: smooth;
}
*, *::before, *::after {
  box-sizing: inherit;
}

body {
  margin: 0;
  background-color: var(--color-background);
  color: var(--color-text);
  font-family: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  line-height: 1.6;
}

a {
  color: var(--color-accent);
  text-decoration: none;
  transition: color 0.2s ease-in-out;
}
a:hover, a:focus {
  color: var(--color-accent-secondary);
  outline: none;
}

h1, h2, h3, h4, h5, h6 {
  color: var(--color-text);
  line-height: 1.3;
  margin: var(--spacing-md) 0 var(--spacing-sm);
}

p {
  margin-top: 0;
  margin-bottom: var(--spacing-md);
  color: var(--color-text);
}

/* Container layout */
.container {
  width: 100%;
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--spacing-md);
  padding-right: var(--spacing-md);
  max-width: 1200px;
}

/* Header */
.site-header {
  background-color: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  position: sticky;
  top: 0;
  z-index: 999;
}
.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: var(--spacing-sm);
  padding-bottom: var(--spacing-sm);
}
.site-logo {
  font-size: 1.4rem;
  font-weight: 600;
  color: var(--color-text);
}

/* Navigation */
.main-navigation ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  gap: var(--spacing-lg);
}
.main-navigation li {
  position: relative;
}
.main-navigation a {
  color: var(--color-text);
  font-weight: 500;
  padding: var(--spacing-sm) 0;
}
.main-navigation a:focus {
  outline: none;
  box-shadow: var(--shadow-focus);
}
.menu-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--color-text);
  font-size: 1.5rem;
}

/* Responsive menu toggle */
@media (max-width: 768px) {
  .main-navigation ul {
    display: none;
    flex-direction: column;
    background-color: var(--color-surface);
    position: absolute;
    top: 100%;
    right: 0;
    min-width: 200px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
  }
  .main-navigation ul.open {
    display: flex;
  }
  .menu-toggle {
    display: block;
  }
}

/* Footer */
.site-footer {
  background-color: var(--color-surface);
  border-top: 1px solid var(--color-border);
  padding: var(--spacing-lg) 0;
  color: var(--color-muted);
  text-align: center;
}
.site-footer a {
  color: var(--color-accent);
  margin: 0 var(--spacing-sm);
}

/* Cards */
.card {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-card);
  padding: var(--spacing-md);
  margin-bottom: var(--spacing-md);
}
.card p {
  margin-bottom: var(--spacing-sm);
}
.card .copy-btn,
.card .download-btn {
  display: inline-block;
  background-color: var(--color-accent);
  color: var(--color-background);
  border: none;
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-size: 0.9rem;
  transition: background-color var(--spacing-sm);
}
.card .copy-btn:hover,
.card .download-btn:hover,
.card .copy-btn:focus,
.card .download-btn:focus {
  background-color: var(--color-accent-secondary);
  outline: none;
}

/* Toast notification */
.toast {
  position: fixed;
  bottom: var(--spacing-lg);
  right: var(--spacing-lg);
  background-color: var(--color-surface);
  color: var(--color-text);
  padding: var(--spacing-md);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-card);
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.2s ease, transform 0.2s ease;
  z-index: 1000;
}
.toast.show {
  opacity: 1;
  transform: translateY(0);
}

/* Forms and filters */
.filter-form select,
.filter-form input {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  color: var(--color-text);
  padding: var(--spacing-sm);
  border-radius: var(--radius-sm);
  margin-right: var(--spacing-sm);
}
.filter-form button {
  background-color: var(--color-accent);
  color: var(--color-background);
  border: none;
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: var(--radius-sm);
  cursor: pointer;
}
.filter-form button:hover,
.filter-form button:focus {
  background-color: var(--color-accent-secondary);
  outline: none;
}

/* Tool sections */
.tool {
  margin-bottom: var(--spacing-lg);
  padding: var(--spacing-md);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background-color: var(--color-surface);
  box-shadow: var(--shadow-card);
}
.tool textarea,
.tool input[type="text"] {
  width: 100%;
  background-color: var(--color-background);
  border: 1px solid var(--color-border);
  color: var(--color-text);
  padding: var(--spacing-sm);
  border-radius: var(--radius-sm);
}
.tool .output {
  margin-top: var(--spacing-sm);
  padding: var(--spacing-sm);
  background-color: var(--color-background);
  border: 1px dashed var(--color-border);
  border-radius: var(--radius-sm);
  min-height: 60px;
}

/* Language switcher */
.language-switcher a {
  color: var(--color-muted);
  font-size: 0.9rem;
}
.language-switcher a:hover,
.language-switcher a:focus {
  color: var(--color-accent-secondary);
}

/* Accessibility focus outline */
:focus {
  outline: none;
  box-shadow: var(--shadow-focus);
}