/* gtk2 — make the page look like a GTK2 application (Clearlooks + Tango).
 *
 * Visual vocabulary:
 *   - warm grey window chrome (#dcdad5), white "document" content area
 *   - beveled toolbar/menubar header with raised buttons on hover
 *   - a real-looking combobox for the theme switcher
 *   - Tango sky-blue links, plum visited
 *   - sunken white boxes for code (GtkTextView/GtkEntry)
 *   - GtkTreeView-style tables with gradient column headers
 */

:root {
  --gtk-bg:          #dcdad5;  /* window / widget grey            */
  --gtk-bg-light:    #f6f5f2;  /* top of a raised gradient        */
  --gtk-bg-dark:     #c9c6bf;  /* bottom of a raised gradient     */
  --gtk-base:        #ffffff;  /* entry / textview background     */
  --gtk-text:        #2e3436;  /* Tango aluminium, near-black ink */
  --gtk-dim:         #5c5b57;  /* secondary text                  */
  --gtk-line:        #9c998f;  /* hard separators / borders       */
  --gtk-line-soft:   #c5c2bb;  /* soft inner borders              */
  --gtk-hi:          #ffffff;  /* bevel highlight                 */
  --gtk-lo:          #6f6c65;  /* bevel shadow                    */
  --gtk-link:        #3465a4;  /* Tango sky blue 3                */
  --gtk-visited:     #75507b;  /* Tango plum 1                    */
  --gtk-select:      #4a90d9;  /* GTK selection blue              */

  --gtk-font: "DejaVu Sans", "Bitstream Vera Sans", "Cantarell", "Verdana", "Helvetica", sans-serif;
  --gtk-mono: "DejaVu Sans Mono", "Bitstream Vera Sans Mono", "Liberation Mono", "Consolas", monospace;

  /* Combobox dropdown arrow, drawn once and reused. */
  --gtk-arrow: url("data:image/svg+xml,%3Csvg%20xmlns='http://www.w3.org/2000/svg'%20width='8'%20height='5'%3E%3Cpath%20d='M0,0%20H8%20L4,5%20Z'%20fill='%232e3436'/%3E%3C/svg%3E");
}

html {
  background: var(--gtk-bg);
}

body {
  margin: 0;
  padding: 0 0 3rem;
  background: var(--gtk-bg);
  color: var(--gtk-text);
  font-family: var(--gtk-font);
  font-size: 13px;
  line-height: 1.5;
}

/* ---- header: a GTK2 toolbar / menubar -------------------------------- */

.site-header {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  padding: 3px 6px;
  background: linear-gradient(to bottom, var(--gtk-bg-light) 0%, #e6e4de 55%, var(--gtk-bg) 100%);
  border-bottom: 1px solid var(--gtk-line);
  box-shadow: inset 0 1px 0 #ffffff;
}

.site-nav {
  display: flex;
  gap: 4px;
}

/* nav items: raised GTK2 push-buttons (siblings of the combobox switcher) */
.site-nav a {
  display: inline-block;
  padding: 3px 12px;
  color: var(--gtk-text);
  text-decoration: none;
  border: 1px solid;
  border-color: var(--gtk-hi) var(--gtk-lo) var(--gtk-lo) var(--gtk-hi);
  border-radius: 3px;
  background: linear-gradient(to bottom, var(--gtk-bg-light), var(--gtk-bg-dark));
}

.site-nav a:visited {
  color: var(--gtk-text);
}

/* prelight — brighter button face on hover */
.site-nav a:hover {
  text-decoration: none;
  background: linear-gradient(to bottom, #ffffff, #e0ddd6);
}

/* pressed — bevel inverts, face darkens, label sinks 1px */
.site-nav a:active {
  border-color: var(--gtk-lo) var(--gtk-hi) var(--gtk-hi) var(--gtk-lo);
  background: var(--gtk-bg-dark);
  box-shadow: inset 1px 1px 2px rgba(0, 0, 0, 0.16);
  padding: 4px 11px 2px 13px;
}

/* ---- theme switcher: a GTK2 combobox --------------------------------- */

#theme-switcher {
  top: 4px;
  right: 6px;
}

#theme-switcher select {
  -webkit-appearance: none;
  -moz-appearance: none;
  appearance: none;
  margin: 0;
  font-family: var(--gtk-font);
  font-size: 12px;
  line-height: 1.2;
  color: var(--gtk-text);
  padding: 3px 22px 3px 9px;
  border: 1px solid;
  border-color: var(--gtk-hi) var(--gtk-lo) var(--gtk-lo) var(--gtk-hi);
  border-radius: 3px;
  background-color: #e9e7e2;
  background-image: var(--gtk-arrow), linear-gradient(to bottom, var(--gtk-bg-light), var(--gtk-bg-dark));
  background-repeat: no-repeat, no-repeat;
  background-position: right 7px center, center;
  background-size: 8px 5px, auto;
  cursor: pointer;
}

#theme-switcher select:hover {
  background-image: var(--gtk-arrow), linear-gradient(to bottom, #ffffff, #e0ddd6);
}

#theme-switcher select:active {
  border-color: var(--gtk-lo) var(--gtk-hi) var(--gtk-hi) var(--gtk-lo);
}

#theme-switcher select:focus {
  outline: 1px dotted var(--gtk-text);
  outline-offset: 1px;
}

/* ---- main: a white document inside the window ------------------------ */

main {
  box-sizing: border-box;
  /* fill most of the window (like a maximized app), but cap line length
     so prose stays readable on very wide screens. Bump the 66rem to taste. */
  width: min(66rem, 100% - 2rem);
  margin: 1.25rem auto;
  padding: 1.1rem 1.75rem 1.6rem;
  background: var(--gtk-base);
  border: 1px solid #b6b3ab;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.18);
}

/* ---- typography ------------------------------------------------------ */

h1, h2, h3, h4, h5, h6 {
  font-family: var(--gtk-font);
  font-weight: bold;
  color: var(--gtk-text);
  line-height: 1.25;
}

h1 {
  font-size: 1.7em;
  margin: 0.1em 0 0.5em;
  padding-bottom: 0.2em;
  border-bottom: 1px solid var(--gtk-line-soft);
}

h2 {
  font-size: 1.32em;
  margin: 1.4em 0 0.5em;
  padding-bottom: 0.15em;
  border-bottom: 1px solid #ddd9d1;
}

h3 { font-size: 1.13em; margin: 1.3em 0 0.4em; }
h4 { font-size: 1em;    margin: 1.2em 0 0.3em; }

p { margin: 0.7em 0; }

a {
  color: var(--gtk-link);
  text-decoration: none;
}
a:hover { text-decoration: underline; }
a:visited { color: var(--gtk-visited); }

/* ---- home/blog lists ------------------------------------------------- */

.projects, .contact, .posts {
  list-style: none;
  padding-left: 0;
  margin: 0.6em 0;
}

.projects li, .posts li {
  padding: 3px 0;
}

.sep {
  color: var(--gtk-line);
  margin: 0 0.5em;
}

.posts time { color: var(--gtk-dim); }

.contact .label {
  display: inline-block;
  min-width: 4.5em;
  color: var(--gtk-dim);
}

/* ---- code: sunken GtkEntry / GtkTextView ----------------------------- */

code, pre, .samples {
  font-family: var(--gtk-mono);
}

code {
  font-size: 0.9em;
  background: #f4f3f0;
  border: 1px solid var(--gtk-line-soft);
  border-radius: 2px;
  padding: 0 3px;
}

pre {
  font-size: 0.88em;
  background: var(--gtk-base);
  border: 1px solid;
  border-color: var(--gtk-lo) #d7d4cd #d7d4cd var(--gtk-lo);
  padding: 9px 11px;
  margin: 1em 0;
  overflow-x: auto;
  box-shadow: inset 1px 1px 2px rgba(0, 0, 0, 0.09);
}

pre code {
  background: none;
  border: 0;
  padding: 0;
  font-size: 1em;
}

/* ---- blockquote: an etched GtkFrame ---------------------------------- */

blockquote {
  margin: 1em 0;
  padding: 0.55em 0.95em;
  background: #f3f1ed;
  border: 1px solid;
  border-color: var(--gtk-line-soft) var(--gtk-hi) var(--gtk-hi) var(--gtk-line-soft);
}

blockquote blockquote {
  background: var(--gtk-base);
  margin: 0.5em 0;
}

blockquote p { margin: 0.4em 0; }

.quote-title {
  font-weight: bold;
  margin: 0.2em 0 0.4em;
}

/* gzip output sample lines */
.samples {
  margin: 0.4em 0 0.1em;
  padding: 7px 9px;
  font-size: 0.85em;
  color: var(--gtk-dim);
  background: var(--gtk-base);
  border: 1px solid var(--gtk-line-soft);
  overflow-x: auto;
}

/* ---- tables: GtkTreeView --------------------------------------------- */

table {
  border-collapse: collapse;
  width: 100%;
  margin: 1em 0;
  background: var(--gtk-base);
  border: 1px solid var(--gtk-line);
}

th {
  text-align: left;
  padding: 4px 11px;
  font-weight: bold;
  background: linear-gradient(to bottom, var(--gtk-bg-light), var(--gtk-bg-dark));
  border: 1px solid var(--gtk-line);
  border-bottom-color: var(--gtk-line);
}

td {
  padding: 4px 11px;
  border: 1px solid #e0ddd6;
}

tbody tr:nth-child(even) {
  background: #f3f2ee;
}

/* ---- separators & media ---------------------------------------------- */

hr {
  border: 0;
  height: 2px;
  margin: 1.6em 0;
  background: linear-gradient(to bottom, var(--gtk-line) 0, var(--gtk-line) 1px, #ffffff 1px, #ffffff 2px);
}

figure {
  margin: 1.2em 0;
  text-align: center;
}

figure img {
  border: 1px solid var(--gtk-line);
  background: var(--gtk-base);
  padding: 3px;
}

ul:not(.projects):not(.contact):not(.posts):not(.samples) {
  padding-left: 1.4em;
}

::selection {
  background: var(--gtk-select);
  color: #ffffff;
}