/* ==========================================================================
   Guido Steinacker — Custom Jekyll Theme
   Nautical-subtle: deep blue, sand, warm white
   ========================================================================== */

/* ==========================================================================
   Self-hosted fonts (DSGVO-konform, no external requests)
   ========================================================================== */

/* Inter — latin-ext */
@font-face {
  font-family: 'Inter';
  font-style: normal;
  font-weight: 400 600;
  font-display: swap;
  src: url('/assets/fonts/inter-latin-ext.woff2') format('woff2');
  unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304, U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF;
}

/* Inter — latin */
@font-face {
  font-family: 'Inter';
  font-style: normal;
  font-weight: 400 600;
  font-display: swap;
  src: url('/assets/fonts/inter-latin.woff2') format('woff2');
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}

/* Source Serif 4 — latin-ext */
@font-face {
  font-family: 'Source Serif 4';
  font-style: normal;
  font-weight: 400 700;
  font-display: swap;
  src: url('/assets/fonts/source-serif-4-latin-ext.woff2') format('woff2');
  unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304, U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF;
}

/* Source Serif 4 — latin */
@font-face {
  font-family: 'Source Serif 4';
  font-style: normal;
  font-weight: 400 700;
  font-display: swap;
  src: url('/assets/fonts/source-serif-4-latin.woff2') format('woff2');
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}

/* JetBrains Mono — latin-ext */
@font-face {
  font-family: 'JetBrains Mono';
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url('/assets/fonts/jetbrains-mono-latin-ext.woff2') format('woff2');
  unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304, U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF;
}

/* JetBrains Mono — latin */
@font-face {
  font-family: 'JetBrains Mono';
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url('/assets/fonts/jetbrains-mono-latin.woff2') format('woff2');
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}

:root {
  /* Nautical palette */
  --color-deep-blue: #1b3a54;
  --color-mid-blue: #2c5f82;
  --color-light-blue: #4a8db7;
  --color-sky: #a8cde0;
  --color-sand: #e8dcc8;
  --color-sand-light: #f4efe6;
  --color-sand-warm: #d4c4a8;
  --color-white: #fafaf7;
  --color-warm-white: #f7f5f0;
  --color-text: #2d2d2d;
  --color-text-light: #5a5a55;
  --color-text-lighter: #8a8a82;
  --color-accent: #c4652a;
  --color-border: #e0dbd2;

  /* Typography */
  --font-serif: 'Source Serif 4', Georgia, 'Times New Roman', serif;
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', 'Consolas', monospace;

  /* Sizing */
  --content-width: 720px;
  --header-height: 64px;
}

/* ==========================================================================
   Reset & Base
   ========================================================================== */

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

html {
  font-size: 17px;
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-sans);
  color: var(--color-text);
  background-color: var(--color-warm-white);
  line-height: 1.7;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* ==========================================================================
   Header / Navigation
   ========================================================================== */

.site-header {
  background-color: var(--color-deep-blue);
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: 0 1px 8px rgba(27, 58, 84, 0.15);
}

.nav-container {
  max-width: var(--content-width);
  margin: 0 auto;
  padding: 0 1.5rem;
  height: var(--header-height);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.site-logo {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  text-decoration: none;
  color: var(--color-sand-light);
  transition: color 0.2s;
}

.site-logo:hover {
  color: var(--color-white);
}

.logo-icon {
  color: var(--color-sky);
  flex-shrink: 0;
}

.site-title {
  font-family: var(--font-serif);
  font-size: 1.15rem;
  font-weight: 600;
  letter-spacing: 0.01em;
}

.nav-links {
  display: flex;
  gap: 1.8rem;
}

.nav-link {
  color: var(--color-sky);
  text-decoration: none;
  font-size: 0.88rem;
  font-weight: 500;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  padding: 0.3rem 0;
  border-bottom: 2px solid transparent;
  transition: color 0.2s, border-color 0.2s;
}

.nav-link:hover {
  color: var(--color-sand-light);
}

.nav-link.active {
  color: var(--color-sand);
  border-bottom-color: var(--color-sand);
}

/* ==========================================================================
   Main Content
   ========================================================================== */

.main-content {
  flex: 1;
  padding: 2.5rem 1.5rem 4rem;
}

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

/* ==========================================================================
   Homepage / Article List
   ========================================================================== */

.home-intro {
  margin-bottom: 2.5rem;
  padding-bottom: 2rem;
  border-bottom: 1px solid var(--color-border);
}

.home-intro p {
  font-size: 1.1rem;
  color: var(--color-text-light);
  line-height: 1.8;
}

.article-list {
  list-style: none;
}

.article-item {
  padding: 1.6rem 0;
  border-bottom: 1px solid var(--color-border);
}

.article-item:first-child {
  padding-top: 0;
}

.article-link {
  text-decoration: none;
  display: flex;
  align-items: flex-start;
  gap: 1.4rem;
}

.article-thumbnail {
  flex-shrink: 0;
  width: 64px;
  height: 64px;
  color: var(--color-mid-blue);
  opacity: 0.7;
  transition: opacity 0.2s;
  margin-top: 0.15rem;
}

.article-thumbnail img {
  width: 100%;
  height: 100%;
}

.article-link:hover .article-thumbnail {
  opacity: 1;
}

.article-text {
  flex: 1;
  min-width: 0;
}

.article-link:hover .article-title {
  color: var(--color-mid-blue);
}

.article-title {
  font-family: var(--font-serif);
  font-size: 1.35rem;
  font-weight: 600;
  color: var(--color-deep-blue);
  line-height: 1.35;
  margin-bottom: 0.4rem;
  transition: color 0.2s;
}

.article-meta {
  font-size: 0.82rem;
  color: var(--color-text-lighter);
  margin-bottom: 0.5rem;
  display: flex;
  align-items: center;
  gap: 0.8rem;
  flex-wrap: wrap;
}

.article-excerpt {
  color: var(--color-text-light);
  font-size: 0.95rem;
  line-height: 1.65;
}

.tag {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--color-mid-blue);
  background-color: rgba(44, 95, 130, 0.08);
  padding: 0.15rem 0.55rem;
  border-radius: 3px;
  letter-spacing: 0.02em;
}

/* Language badge */
.lang-badge {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  padding: 0.1rem 0.4rem;
  border-radius: 3px;
  background-color: rgba(44, 95, 130, 0.1);
  color: var(--color-mid-blue);
}

/* Translation link */
.translation-link {
  font-size: 0.85rem;
  color: var(--color-mid-blue);
  text-decoration: none;
  font-weight: 500;
  transition: color 0.2s;
}

.translation-link:hover {
  color: var(--color-deep-blue);
}

/* ==========================================================================
   Page Content
   ========================================================================== */

.page-title {
  font-family: var(--font-serif);
  font-size: 2rem;
  font-weight: 700;
  color: var(--color-deep-blue);
  margin-bottom: 1.8rem;
  line-height: 1.25;
}

.page-content {
  font-size: 1rem;
  line-height: 1.75;
}

/* ==========================================================================
   Post / Article Content
   ========================================================================== */

.post-header {
  margin-bottom: 2.5rem;
  padding-bottom: 1.5rem;
  border-bottom: 1px solid var(--color-border);
}

.post-title {
  font-family: var(--font-serif);
  font-size: 2.2rem;
  font-weight: 700;
  color: var(--color-deep-blue);
  line-height: 1.2;
  margin-bottom: 0.8rem;
}

.post-meta {
  font-size: 0.85rem;
  color: var(--color-text-lighter);
  display: flex;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
}

.post-tags {
  display: flex;
  gap: 0.4rem;
}

.reading-time::before {
  content: "\00b7";
  margin-right: 0;
}

.post-body {
  font-family: var(--font-serif);
  font-size: 1.05rem;
  line-height: 1.8;
}

.post-body h2 {
  font-family: var(--font-sans);
  font-size: 1.4rem;
  font-weight: 600;
  color: var(--color-deep-blue);
  margin: 2.5rem 0 1rem;
  letter-spacing: -0.01em;
}

.post-body h3 {
  font-family: var(--font-sans);
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--color-deep-blue);
  margin: 2rem 0 0.8rem;
}

.post-body p {
  margin-bottom: 1.3rem;
}

.post-body a {
  color: var(--color-mid-blue);
  text-decoration: underline;
  text-decoration-color: var(--color-sky);
  text-underline-offset: 2px;
  transition: text-decoration-color 0.2s;
}

.post-body a:hover {
  text-decoration-color: var(--color-mid-blue);
}

.post-body ul, .post-body ol {
  margin: 1rem 0 1.3rem 1.5rem;
}

.post-body li {
  margin-bottom: 0.4rem;
}

.post-body blockquote {
  border-left: 3px solid var(--color-sand-warm);
  padding: 0.8rem 1.2rem;
  margin: 1.5rem 0;
  background-color: var(--color-sand-light);
  border-radius: 0 4px 4px 0;
  font-style: italic;
  color: var(--color-text-light);
}

.post-body img {
  display: block;
  max-width: 100%;
  height: auto;
  border-radius: 4px;
  margin: 1.5rem 0 0.3rem;
}

/* Image captions: _italic text_ directly after an image */
.post-body img + em,
.post-body p > img + br + em {
  display: block;
  font-size: 0.85rem;
  color: var(--color-text-lighter);
  margin-bottom: 1.5rem;
  font-style: italic;
}

/* Code blocks */
.post-body code {
  font-family: var(--font-mono);
  font-size: 0.85em;
  background-color: var(--color-sand-light);
  padding: 0.15rem 0.4rem;
  border-radius: 3px;
  color: var(--color-deep-blue);
}

.post-body pre {
  background-color: var(--color-deep-blue);
  color: var(--color-sand-light);
  padding: 1.2rem 1.5rem;
  border-radius: 6px;
  overflow-x: auto;
  margin: 1.5rem 0;
  line-height: 1.5;
  box-shadow: inset 0 1px 3px rgba(0, 0, 0, 0.2);
}

.post-body pre code {
  background: none;
  padding: 0;
  color: inherit;
  font-size: 0.85rem;
}

/* Tables */
.post-body table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.5rem 0;
  font-family: var(--font-sans);
  font-size: 0.9rem;
}

.post-body th {
  background-color: var(--color-sand-light);
  font-weight: 600;
  text-align: left;
  padding: 0.7rem 1rem;
  border-bottom: 2px solid var(--color-sand-warm);
}

.post-body td {
  padding: 0.6rem 1rem;
  border-bottom: 1px solid var(--color-border);
}

/* Comments */
.post-comments {
  margin-top: 3rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--color-border);
}

.post-comments h2 {
  font-family: var(--font-sans);
  font-size: 1.3rem;
  color: var(--color-deep-blue);
  margin-bottom: 1rem;
}

/* Post footer */
.post-footer {
  margin-top: 3rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--color-border);
}

.back-link {
  font-size: 0.9rem;
  color: var(--color-mid-blue);
  text-decoration: none;
  font-weight: 500;
  transition: color 0.2s;
}

.back-link:hover {
  color: var(--color-deep-blue);
}

/* ==========================================================================
   About Page
   ========================================================================== */

.about-header {
  display: flex;
  align-items: center;
  gap: 1.8rem;
  margin-bottom: 2rem;
}

.about-photo {
  width: 100px;
  height: 100px;
  border-radius: 50%;
  object-fit: cover;
  border: 3px solid var(--color-sand);
  flex-shrink: 0;
}

.about-intro h1 {
  font-family: var(--font-serif);
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--color-deep-blue);
  margin-bottom: 0.3rem;
}

.about-intro p {
  color: var(--color-text-light);
  font-size: 1rem;
}

/* ==========================================================================
   Footer
   ========================================================================== */

.site-footer {
  margin-top: auto;
}

.footer-wave svg {
  display: block;
  width: 100%;
  height: 30px;
}

.footer-content {
  background-color: var(--color-sand-light);
  padding: 1.2rem 1.5rem;
  text-align: center;
}

.footer-content p {
  font-size: 0.8rem;
  color: var(--color-text-lighter);
}

.footer-legal {
  margin-top: 0.3rem;
}

.footer-legal a {
  color: var(--color-text-lighter);
  text-decoration: none;
  transition: color 0.2s;
}

.footer-legal a:hover {
  color: var(--color-text-light);
}

/* ==========================================================================
   Pagination
   ========================================================================== */

.pagination {
  display: flex;
  justify-content: center;
  gap: 1rem;
  margin-top: 3rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--color-border);
}

.pagination a {
  font-size: 0.9rem;
  color: var(--color-mid-blue);
  text-decoration: none;
  font-weight: 500;
  padding: 0.4rem 1rem;
  border: 1px solid var(--color-border);
  border-radius: 4px;
  transition: background-color 0.2s, border-color 0.2s;
}

.pagination a:hover {
  background-color: var(--color-sand-light);
  border-color: var(--color-sand-warm);
}

/* ==========================================================================
   Rouge syntax highlighting (adapted for nautical dark)
   ========================================================================== */

.highlight .c, .highlight .cm, .highlight .c1, .highlight .cs { color: #7a9ab5; font-style: italic; }
.highlight .k, .highlight .kd, .highlight .kn, .highlight .kp, .highlight .kr { color: #8ecdf0; }
.highlight .s, .highlight .s1, .highlight .s2, .highlight .sb, .highlight .sc, .highlight .sh { color: #e8c48a; }
.highlight .na { color: #a8cde0; }
.highlight .nb, .highlight .nc, .highlight .no { color: #d4a76a; }
.highlight .nf, .highlight .nx { color: #7cc5a8; }
.highlight .nn { color: #e8dcc8; }
.highlight .mi, .highlight .mf, .highlight .mh, .highlight .mo { color: #c9a8e0; }
.highlight .o, .highlight .ow { color: #b0c8dc; }
.highlight .p { color: #d4cfc4; }

/* ==========================================================================
   Responsive
   ========================================================================== */

@media (max-width: 600px) {
  html {
    font-size: 16px;
  }

  .nav-container {
    padding: 0 1rem;
  }

  .site-title {
    font-size: 1rem;
  }

  .nav-links {
    gap: 1.2rem;
  }

  .nav-link {
    font-size: 0.8rem;
  }

  .main-content {
    padding: 1.8rem 1rem 3rem;
  }

  .post-title {
    font-size: 1.7rem;
  }

  .article-title {
    font-size: 1.2rem;
  }

  .article-thumbnail {
    width: 48px;
    height: 48px;
  }

  .about-header {
    flex-direction: column;
    text-align: center;
  }
}