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

/* ===== CSS CUSTOM PROPERTIES ===== */
:root {
  --bg-color: #f7f6f2;
  --text-color: #222222;
  --text-color-muted: #666666;
  --link-color: #1a73e8;
  --link-hover-color: #1558b0;
  --imp-color: #1a73e8;
  --nav-bg: rgba(247, 246, 242, 0.2);
  --hover-bg: rgba(0, 0, 0, 0.06);
  --code-bg: #eae6de;
  --border-color: #d5d0c8;
  --subtle-bg: #edeae3;
}

[data-theme="dark"] {
  --bg-color: #000000;
  --text-color: rgba(255, 255, 255, 0.66);
  --text-color-muted: #999999;
  --link-color: #ffee00;
  --link-hover-color: #807700;
  --imp-color: #ffee00;
  --nav-bg: rgba(0, 0, 0, 0.5);
  --hover-bg: rgba(255, 255, 255, 0.15);
  --code-bg: rgba(255, 255, 255, 0.1);
  --border-color: rgba(255, 255, 255, 0.15);
  --subtle-bg: rgba(255, 255, 255, 0.05);
}

/* ===== BASE TYPOGRAPHY ===== */
html,
body {
  width: 100%;
  height: 100%;
}

body {
  color: var(--text-color);
  font-family: "Inter", sans-serif;
  line-height: 1.5;
  background-color: var(--bg-color);
}

h1,
h2,
h3,
h4,
h5,
h6 {
  font-family: "Inter", sans-serif;
  line-height: 1.2;
  margin: 0.75em 0;
  font-weight: 700;
}

h1 {
  font-size: 1.875rem;
}
h2 {
  font-size: 1.625rem;
}
h3 {
  font-size: 1.5rem;
}
h4 {
  font-size: 1.25rem;
}
h5,
h6 {
  font-size: 1rem;
}

p {
  margin: 0 0 0.75em;
}

a {
  color: var(--link-color);
  text-decoration: none;
  transition: color 150ms ease;
}

a:active,
a:focus,
a:hover {
  color: var(--link-hover-color);
  font-weight: bold !important;
}

strong {
  font-weight: bold;
}

em {
  font-style: italic;
}

ul,
dl {
  margin-top: 0;
  margin-left: 1.2em;
  margin-bottom: 1rem;
  list-style-type: circle;
  list-style-position: outside;
  list-style-image: none;
}

img,
picture {
  margin: 0;
  max-width: 100%;
}

/* ===== LAYOUT ===== */
hr {
  border-top: none;
  border-bottom: 2px solid var(--border-color);
  width: 100%;
  margin: 0.75em 0;
}

.container {
  padding: 1.5em;
  margin-left: auto;
  margin-right: auto;
  max-width: 750px;
  font-weight: normal;
}

.site-header {
  margin-bottom: 0;
  min-height: 80px;
}

/* ===== NAVIGATION ===== */
.nav {
  position: fixed;
  left: 50%;
  transform: translateX(-50%);
  width: calc(100% - 2rem);
  max-width: 750px;
  margin-bottom: 2%;
  background: var(--nav-bg);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: none;
  border-radius: 20px;
  box-shadow: none;
  z-index: 100;
  transition: all 0.3s ease;
  margin-top: 1rem;
}

.nav .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 1.5em;
  gap: 1rem;
  flex-wrap: nowrap;
}

.logo {
  margin: 0;
  cursor: pointer;
  letter-spacing: 0.8px;
  font-size: 24px;
  line-height: 1;
  font-weight: 300;
  flex-shrink: 0;
  white-space: nowrap;
}

.logo span {
  font-weight: 700;
}

.navbar {
  display: flex;
  align-items: center;
  margin: 0;
  padding: 0;
  font-size: 18px;
  pointer-events: all;
  cursor: pointer;
  gap: 0.5em;
  flex-wrap: wrap;
  justify-content: flex-end;
  list-style: none;
}

.navbar li {
  display: inline-flex;
  align-items: center;
  padding: 0 0.3em;
  transition: all 0.3s ease;
}

.navbar li a {
  transition: all 0.3s ease;
  padding: 0.5em 0.8em;
  border-radius: 6px;
  display: block;
  white-space: nowrap;
  font-size: 0.9em;
}

.navbar li a:hover {
  background: var(--hover-bg);
  backdrop-filter: blur(10px);
}

.navbar .theme-toggle {
  padding: 0.5em 0.8em;
  border-radius: 6px;
  transition: all 0.3s ease;
  display: flex;
  align-items: center;
  flex-shrink: 0;
}

.navbar .theme-toggle:hover {
  background: var(--hover-bg);
}

/* ===== LINKS ===== */
.link,
.hover {
  color: var(--link-color);
  padding-bottom: 0.05em;
  border-bottom: 2px solid transparent;
  transition: border 300ms linear;
}

.link:hover,
.link:focus,
.link:active,
.hover:hover,
.hover:focus,
.hover:active {
  border-bottom: 2px solid var(--link-color);
}

/* ===== POST ===== */
.post-meta {
  color: var(--text-color-muted);
  text-transform: uppercase;
  display: inline-block;
  letter-spacing: 1px;
  font-size: 0.875rem;
  margin-bottom: 1px;
}

.post-title {
  margin-top: 0;
  margin-bottom: 1em;
  color: var(--text-color);
}

.category-title {
  margin: 1em 0 0.5em 0;
}

.category-title:first-child {
  margin-top: 0;
}

/* ===== PROJECT PAGE ===== */
.row {
  display: flex;
  flex-wrap: wrap;
}

.col-md-12 {
  width: 100%;
}

.btn-primary {
  color: var(--link-color);
}

/* ===== UTILITY ===== */
.imp-color {
  color: var(--imp-color);
}

.white-color {
  color: var(--text-color);
}

.no-invert {
  display: inline;
}

[data-theme="dark"] .no-invert-emoji {
  filter: invert(1) hue-rotate(180deg);
}

.site-footer {
  padding: 1.5em 0;
  display: none;
}

.site-footer small {
  display: block;
  font-size: 0.75rem;
  color: var(--text-color-muted);
}

.site-footer .block {
  display: block;
}

/* ===== BLOCKQUOTE ===== */
blockquote {
  padding: 1.5em 0 1.5em 1.5em;
  margin: 1.5em 0;
  color: var(--text-color);
  line-height: 1.8;
  border-left: 0.75em solid var(--border-color);
  background-color: var(--subtle-bg);
}

blockquote p {
  margin: 0;
}

/* ===== CODE ===== */
code {
  background: none;
  border-radius: 0;
  border: none;
  font-family: "SFMono-Regular", Menlo, Consolas, "Inconsolata", monospace;
  font-size: 1em;
  margin: 0;
  padding: 0 5px;
  background-color: var(--code-bg);
}

pre {
  -webkit-overflow-scrolling: touch;
  font-family: "SFMono-Regular", Menlo, Consolas, "Inconsolata", monospace;
  font-size: 1em;
  margin: 0;
  padding: 5px 10px !important;
  overflow: auto;
  max-height: 60em;
  white-space: pre;
  border: 1px solid var(--border-color);
}

pre code {
  line-height: 1.75em;
  padding: 0 !important;
}

/* ===== SYNTAX HIGHLIGHTING ===== */
.highlight {
  margin: 1.5em 0;
  padding: 0;
  box-shadow: 0px 0px 2px rgba(0, 0, 0, 0.1);
}

.highlight,
.highlight .hll,
.highlight pre,
.highlight code,
.highlighter-rouge .highlight {
  background-color: var(--subtle-bg) !important;
}

.highlight pre {
  margin: 0;
  padding: 1.5em;
  white-space: pre;
  line-height: 23px;
  overflow-x: auto;
  margin-bottom: 0;
  word-break: inherit;
  word-wrap: inherit;
}

.highlight pre,
.highlight pre code {
  color: var(--text-color);
}

.highlight pre code {
  white-space: pre;
  padding: 0 !important;
}

.highlight pre code * {
  white-space: nowrap;
}

.highlight .c {
  color: #998;
  font-style: italic;
}
.highlight .err {
  color: #a61717;
  background-color: #e3d2d2;
}
.highlight .k {
  font-weight: bold;
}
.highlight .o {
  font-weight: bold;
}
.highlight .cm {
  color: #998;
  font-style: italic;
}
.highlight .cp {
  color: #999;
  font-weight: bold;
}
.highlight .c1 {
  color: #998;
  font-style: italic;
}
.highlight .cs {
  color: #999;
  font-weight: bold;
  font-style: italic;
}
.highlight .gd {
  color: #000;
  background-color: #fdd;
}
.highlight .gd .x {
  color: #000;
  background-color: #faa;
}
.highlight .ge {
  font-style: italic;
}
.highlight .gr {
  color: #a00;
}
.highlight .gh {
  color: #999;
}
.highlight .gi {
  color: #000;
  background-color: #dfd;
}
.highlight .gi .x {
  color: #000;
  background-color: #afa;
}
.highlight .go {
  color: #888;
}
.highlight .gp {
  color: #555;
}
.highlight .gs {
  font-weight: bold;
}
.highlight .gu {
  color: #aaa;
}
.highlight .gt {
  color: #a00;
}
.highlight .kc {
  font-weight: bold;
}
.highlight .kd {
  font-weight: bold;
}
.highlight .kp {
  font-weight: bold;
}
.highlight .kr {
  font-weight: bold;
}
.highlight .kt {
  color: #458;
  font-weight: bold;
}
.highlight .m {
  color: #099;
}
.highlight .s {
  color: #d14;
}
.highlight .na {
  color: #008080;
}
.highlight .nb {
  color: #0086b3;
}
.highlight .nc {
  color: #458;
  font-weight: bold;
}
.highlight .no {
  color: #008080;
}
.highlight .ni {
  color: #800080;
}
.highlight .ne {
  color: #900;
  font-weight: bold;
}
.highlight .nf {
  color: #900;
  font-weight: bold;
}
.highlight .nn {
  color: #555;
}
.highlight .nt {
  color: #000080;
}
.highlight .nv {
  color: #008080;
}
.highlight .ow {
  font-weight: bold;
}
.highlight .w {
  color: #bbb;
}
.highlight .mf {
  color: #099;
}
.highlight .mh {
  color: #099;
}
.highlight .mi {
  color: #099;
}
.highlight .mo {
  color: #099;
}
.highlight .sb {
  color: #d14;
}
.highlight .sc {
  color: #d14;
}
.highlight .sd {
  color: #d14;
}
.highlight .s2 {
  color: #d14;
}
.highlight .se {
  color: #d14;
}
.highlight .sh {
  color: #d14;
}
.highlight .si {
  color: #d14;
}
.highlight .sx {
  color: #d14;
}
.highlight .sr {
  color: #009926;
}
.highlight .s1 {
  color: #d14;
}
.highlight .ss {
  color: #990073;
}
.highlight .bp {
  color: #999;
}
.highlight .vc {
  color: #008080;
}
.highlight .vg {
  color: #008080;
}
.highlight .vi {
  color: #008080;
}
.highlight .il {
  color: #099;
}

/* ===== RESPONSIVE ===== */
@media (max-width: 600px) {
  .container {
    max-width: calc(100% - 2rem);
    padding: 0.75em;
  }

  .nav {
    width: calc(100% - 1rem);
    margin-top: 0.5rem;
  }

  .nav .container {
    padding: 0.6rem 0.5rem;
    gap: 0.4rem;
    flex-wrap: nowrap;
  }

  .logo {
    font-size: 14px;
    letter-spacing: 0.5px;
  }

  .navbar {
    gap: 0.2em;
    flex-wrap: nowrap;
  }

  .navbar li a {
    padding: 0.35em 0.5em;
    font-size: 0.75em;
  }

  .navbar .theme-toggle {
    padding: 0.35em 0.5em;
  }
}