/* ==========================================================================
   Design Tokens - Web Safe Colors (白・黒・グレー・青・紫)
   ========================================================================== */
:root {
  --c-black: #000000;
  --c-white: #ffffff;
  --c-gray-text: #666666;
  --c-gray-muted: #999999;
  --c-gray-border: #cccccc;
  --c-blue: #0066cc;
  --c-purple: #6600cc;
  --c-green-dark: #006600;

  --font-sans: "Helvetica Neue", Helvetica, "Inter", -apple-system, BlinkMacSystemFont, Arial, "Hiragino Sans", "Hiragino Kaku Gothic ProN", "Noto Sans JP", sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
}

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

html {
  font-size: 110%;
}

body {
  font-family: var(--font-sans);
  background-color: var(--c-white);
  color: var(--c-black);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  border-top: 8px solid var(--c-green-dark);
}

.container {
  padding: 36px 24px 0;
}

/* ==========================================================================
   Header
   ========================================================================== */
.site-header {
  margin-bottom: 32px;
  text-align: center;
}

.brand {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--c-black);
  text-decoration: none;
  letter-spacing: -0.01em;
}

/* ==========================================================================
   Project List & Article
   ========================================================================== */
.projects-list {
  display: flex;
  flex-direction: column;
  gap: 28px;
  margin-bottom: 48px;
}

article,
.project-card {
  border: none;
  border-left: 2px solid var(--c-gray-border);
  padding: 2px 0 2px 14px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.card-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
}

.card-title-group {
  display: flex;
  align-items: center;
  gap: 10px;
}

.project-icon,
.project-icon-placeholder {
  width: 28px;
  height: 28px;
  border-radius: 4px;
  flex-shrink: 0;
}

.project-icon {
  object-fit: cover;
}

.project-icon-placeholder {
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--c-gray-text);
  font-size: 1.15rem;
  line-height: 1;
}

.project-name {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--c-black);
}

.badge {
  font-size: 0.75rem;
  font-family: var(--font-mono);
  font-style: italic;
  color: var(--c-gray-muted);
}

.card-desc {
  font-size: 0.92rem;
  color: var(--c-gray-text);
  line-height: 1.6;
}

.card-action {
  margin-top: 2px;
}

.card-links {
  padding-left: 1.4em;
}

.card-links li {
  margin-bottom: 4px;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--c-gray-muted);
}

.card-links li:last-child {
  margin-bottom: 0;
}

.card-url {
  font-size: 0.82rem;
  font-family: var(--font-mono);
  text-decoration: underline;
  text-underline-offset: 3px;
  word-break: break-all;
  line-height: 1.45;
  transition: opacity 0.15s ease;
}

.card-url:link {
  color: var(--c-blue);
}

.card-url:visited {
  color: var(--c-purple);
}

.card-url:hover {
  opacity: 0.8;
}

/* ==========================================================================
   Footer
   ========================================================================== */
.site-footer {
  font-size: 0.8rem;
  color: var(--c-gray-muted);
  font-family: var(--font-mono);
  padding-bottom: 8em;
}

@media (max-width: 600px) {
  .container {
    padding: 24px 16px 0;
  }
}