/* Estilos generales para todos los elementos */
*,
::after,
::before {
  box-sizing: border-box;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
  transition: background-color 0.3s, color 0.3s, border-color 0.3s;
}

:root {
  --bg-color-200:hsl(34, 55%, 90%);
  --bg-color-200-75: hsl(34, 25%, 11%, 90%);
  --bg-color-400:hsl(34, 55%, 8%);
  --bg-color-500:hsl(34, 55%, 5%);
  --text-color:hsl(34, 55%, 8%);
  --accent-color-200:hsl(10, 100%, 6%);
  --accent-color-400:hsl(10, 100%, 45%);
  --accent-color-500:hsl(10, 100%, 55%);

  --color-success: hsl(140, 50%, 45%);
  --color-success-bg: hsl(140, 30%, 10%);
  --color-success-a: hsl(283, 50%, 45%);
  --color-success-a-bg: hsl(283, 30%, 10%);
  --color-success-aa: hsl(194, 82%, 49%);
  --color-success-aa-bg: hsl(194, 30%, 10%);
  --color-success-aaa: hsl(140, 50%, 45%);
  --color-success-aaa-bg: hsl(140, 30%, 10%);
  --color-warning: hsl(35, 90%, 55%);
  --color-warning-bg: hsl(35, 40%, 10%);
  --color-error: hsl(0, 65%, 55%);
  --color-error-bg: hsl(0, 40%, 10%);

  /* Tamaños */
  --box-width: min(55rem, 100%);
  --texto-base: clamp(1rem, 2vw, 1.5rem);

  /* Iconos */
  --menu: url('../img/iconos/menu-lg.svg');

  /* Code */
  --cf-bg: #0d1117;
  --cf-text: #c9d1d9;
  --cf-line-num: #484f58;
  --cf-gutter-border: #21262d;
  --cf-line-hover: rgba(255,255,255,0.03);
  --cf-tag: #7ee787;
  --cf-attr: #d2a8ff;
  --cf-str: #a5d6ff;
  --cf-key: #ff7b72;
  --cf-cmt: #9198a1;
  --cf-num: #79c0ff;
  --cf-fn: #d2a8ff;
  --cf-punc: #c9d1d9;
  --cf-op: #ff7b72;
  --cf-sel: #79c0ff;
  --cf-prop: #79c0ff;
  --cf-atrule: #ff7b72;
  --cf-entity: #79c0ff;
  --cf-pseudo: #7ee787;
  --cf-builtin: #ffa657;
}

[data-theme="dark"]{
  --bg-color-200:hsl(214, 25%, 11%);
  --bg-color-200-75:hsla(214, 25%, 11%, 0.749);
  --bg-color-400:hsl(214, 20%, 16%);
  --bg-color-500:hsl(214, 20%, 25%);
  --text-color:hsl(215, 25%, 85%);
  --accent-color-200:hsl(24, 43%, 7%);
  --accent-color-400:hsl(22, 100%, 62%);
  --accent-color-500:hsl(22, 100%, 78%);

  --menu: url('../img/iconos/menu.svg');
}

.sr-only {
  display: block;
  width: 1px;
  height: 1px;
  overflow: hidden;
  position: absolute;
  top: -1000px;
  left: -1000px;
}

body {
  margin: 0;
  display: grid;
  justify-items: center;
  line-height: 1.6;
  background: var(--bg-color-200);
  color: var(--text-color);
}

header {
  width: var(--box-width);
  display: grid;
  grid-template-columns: 1fr 1fr;
  justify-content: space-between;
  align-items: center;
  align-content: center;
  background-color: var(--bg-color-400);
  position: sticky;
  z-index: 998; /* Stacking */
  border-radius: 2rem;
  padding: 0 1.5rem;
  top: 1rem;
}

header > a {
  display: block;
  font-size: 1.5rem;
  font-weight: 600;
  margin: 0;
  padding: 1.5rem 0;
}

header ul {
  padding: 0;
  list-style: none;
}

.contenedor-menu {
  display: grid;
  grid-auto-flow: column;
  gap: 1.5rem;
  justify-content: end;
}

.toggle-wrap {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.toggle-label {
  font-size: 0.85rem;
  color: var(--accent-color-400);
}

.toggle-btn {
  position: relative;
  width: 3rem;
  height: 1.5rem;
  border-radius: 999px;
  background: var(--bg-color-200);
  border: none;
  cursor: pointer;
  outline: none;
}

/* Thumb del toggle */
.toggle-btn::after {
  content: '';
  position: absolute;
  top: 4px;
  left: 3px;
  width: 1rem;
  aspect-ratio: 1;
  border-radius: 50%;
  background: var(--accent-color-400);
  transition: transform 0.3s cubic-bezier(.4, 0, .2, 1);
}

/* Mueve el thumb cuando está en dark */
[data-theme="dark"] .toggle-btn::after {
  transform: translateX(22px);
}

.primary-navigation {
  display: grid;
  align-content: start;
  align-items: start;
  min-width: 35vw;
  position: fixed;
  top: 0;
  right: 0;
  bottom: 0;
  z-index: 999;
  background-color: var(--bg-color-200-75);
  visibility: hidden;
  transform: translateX(100%);
  transition:
    transform 350ms ease-out,
    visibility 0s 350ms;
  overflow-y: scroll;
}

.primary-navigation[data-visible="true"] {
  visibility: visible;
  transform: translateX(0%);
  transition:
    transform 350ms ease-out,
    visibility 0s 0s;
}

@supports (backdrop-filter: blur(1em)) {
  .primary-navigation {
    backdrop-filter: blur(2em);
  }
}

/* Compatibilidad iOS 9*/
@supports (-webkit-backdrop-filter: blur(1em)) {
  .primary-navigation {
    backdrop-filter: blur(2em);
    -webkit-backdrop-filter: blur(2em);
  }
}

.primary-navigation ul {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  height: 100%;
}

.menu-boton {
  padding: 0;
  justify-self: end;
  width: 2rem;
  aspect-ratio: 1/1;
  background: none;
  border: none;
  background-image: var(--menu);
  background-position: center;
  background-size: cover;
  background-repeat: no-repeat;
}

.menu-boton:hover {
  background: none;
  border: none;
  background-image: var(--menu);
  background-position: center;
  background-size: cover;
  background-repeat: no-repeat;
}

main {
  padding: 2rem;
  width: var(--box-width);
  display: grid;
}

section:first-of-type {
  min-height: 75vh;
}

section {
  min-height: 95vh;
  display: grid;
  justify-content: stretch;
  justify-items: left;
  align-content: center;
  align-items: center;
}

section:first-of-type > h1 {
  text-align: center;
  justify-self: stretch;
}

img {
  width: 100%;
  margin: 2rem 0;
}

h1,
h2,
h3,
strong {
  color: var(--accent-color-400);
  line-height: 1.3;
  margin: 0;
}

h1,
h2 {
  font-size: clamp(1.5rem, 5vw, 4rem);
  font-weight: 400;
  margin: 2rem 0 1.5rem;
}

h3 {
  font-size: clamp(1rem, 2vw, 1.5rem);
  margin: 0.5rem 0;
}

code {
  margin: 0 0 1.5rem;
}

p {
  margin: 0.5rem 0;
}

p,
a,
ul,
ol {
  font-size: var(--texto-base);
}

span {
  display: inline-block;
  background-color: var(--accent-color-200);
  color: var(--accent-color-400);
  padding: 0.15rem 0.5rem 0.05rem;
  font-family: 'Courier New', Courier, monospace;
}

/* Estilos para los vínculos */
a:link,
a:visited {
  text-decoration: none;
  color: var(--accent-color-400);
}

a:hover,
a:active {
  color: var(--accent-color-500);
}

a.btn-fill:link,
a.btn-fill:visited {
  display: inline-block;
  background-color: var(--accent-color-200);
  color: var(--accent-color-400);
  padding: 0.5rem 1rem;
  border-radius: 0.5rem;
}

a.btn-fill:hover,
a.btn-fill:active {
  background-color: var(--accent-color-400);
  color: var(--accent-color-200);
}

button {
  border: 0.25rem solid var(--accent-color-200);
  font-size: var(--texto-base);
  background-color: var(--accent-color-200);
  color: var(--accent-color-400);
  padding: 0.5rem 1rem;
  border-radius: 0.5rem;
  cursor: pointer;
}

/* Cards / Notes*/
.contenedor-cards {
  display: grid;
  gap: 1rem;
}

.card {
  display: flex;
  flex-direction: column;
  background-color: var(--bg-color-300);
  border: 1px solid var(--bg-color-500);
  border-radius: 1rem;
  padding: 1rem;
  transition: transform 0.2s;
}

.card:hover {
  transform: translateY(-2px);
}

.card__header {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 0.5rem;
}

.card__number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.5rem;
  height: 2.5rem;
  border-radius: 100%;
  background-color: var(--accent-color-200);
  color: var(--accent-color-400);
  font-size: var(--texto-base);
  font-weight: 600;
  flex-shrink: 0;
}

.card__title {
  font-size: var(--text-lg);
  font-weight: 600;
  margin: 0;
  color: var(--accent-color-400);
}

.card__body {
  flex: 1;
  font-size: var(--texto-base);
  color: var(--text-color);
  margin-bottom: var(--space-4);
}

.card__topics {
  list-style: none;
  padding: 0;
  margin: 0 0 0.5rem;
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
}

.card__topic {
  display: inline-block;
  font-size: var(--text-xs);
  background-color: var(--accent-color-200);
  color: var(--accent-color-400);
  padding: 0.5rem 1.5rem;
  border-radius: 2rem;
  font-weight: 500;
}

.card__link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-weight: var(--weight-semibold);
  font-size: var(--text-sm);
  color: var(--text-color);
  text-decoration: none;
  margin-top: auto;
}

.card__link::after {
  content: "→";
  transition: transform 0.15s;
}

.card__link:hover::after {
  transform: translateX(3px);
}

.card--completed .card__number {
  background-color: var(--color-success);
  color: var(--color-white);
}

.card--active .card__number {
  background-color: var(--color-accent);
}

.note {
  color: var(--accent-color-400);
  padding: 2rem 2.5rem;
  border-radius: 1rem;
  border-left: 4px solid var(--accent-color-400);
  background-color: var(--accent-color-200);
  margin-bottom: 0.5rem;
}

.note--tip {
  border-left-color: var(--color-success);
  background-color: var(--color-success-bg);
}

.note--tip-A {
  border-left-color: var(--color-success-a);
  color: var(--color-success-a);
  background-color: var(--color-success-a-bg);
}

.note--tip-AA {
  border-left-color: var(--color-success-aa);
  color: var(--color-success-aa);
  background-color: var(--color-success-aa-bg);
}

.note--tip-AAA {
  border-left-color: var(--color-success-aaa);
  color: var(--color-success-aaa);
  background-color: var(--color-success-aaa-bg);
}

.note--warning {
  border-left-color: var(--color-warning);
  background-color: var(--color-warning-bg);
}

.note--error {
  border-left-color: var(--color-error);
  background-color: var(--color-error-bg);
}

.note__title {
  font-size: var(--text-sm);
  font-weight: var(--weight-bold);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: var(--space-2);
}

.note p:last-child {
  margin-bottom: 0;
}

/* Tablas */
table {
  border-collapse: separate;
  border-spacing: 0;
  border-radius: 12px;
  overflow: hidden;
  background-color: var(--cf-bg);
  width: 100%;
  text-align: left;
  color: var(--cf-punc);
  padding: 1rem;
}

table th {
  color: var(--accent-color-400);
}

table th,
table td {
  padding: 1.25rem 1rem;
  border-bottom: 0.13rem solid var(--bg-color-500);
}

table tr td:first-child {
  text-align: right;
}

table tr:last-child td {
  border-bottom: none;
}

/* Footer */
footer {
  background-color: var(--bg-color-200);
  padding: 2rem 0 1rem;
}

/* Ejemplo clase 2 */

#imagenes img {
  border-radius: 2rem;
  box-shadow: none;
  border: 0.15rem solid var(--text-color);

  width: 22rem;
  filter: grayscale(100%);
}

#imagenes img:hover {
  border: 0.15rem solid var(--accent-color-400);
  box-shadow: 0 1rem 2rem 0.5rem var(--bg-color-200);
  filter: grayscale(0%);
  cursor: pointer;
}

/* code */
.code-block span {
  background: none;
  margin: 0;
  padding: 0.1rem 0;
}

.code-block {
  background-color: var(--cf-bg);
  color: var(--cf-text);
  font-family: 'JetBrains Mono', 'Fira Code', 'Cascadia Code', 'Consolas', monospace;
  font-size: 1rem;
  line-height: 1.6;
  overflow: auto;
  padding: 1.4rem 1rem 0;
  width: 100%;
  border-radius: 1rem;
}

.code-block .code-content {
  display: block;
}

.code-block .line {
  display: flex;
  align-items: stretch;
  min-height: 1.6em;
}

.code-block .line:hover {
  background-color: var(--cf-line-hover);
}

.code-block .line-num {
  user-select: none;
  text-align: right;
  color: var(--cf-line-num);
  min-width: 40px;
  padding-right: 16px;
  border-right: 1px solid var(--cf-gutter-border);
  margin-right: 16px;
  font-variant-numeric: tabular-nums;
}

.code-block .line-content {
  flex: 1;
  white-space: pre-wrap;
  word-break: break-all;
}

.token-comment    { color: var(--cf-cmt); font-style: italic; }
.token-tag        { color: var(--cf-tag); }
.token-attr       { color: var(--cf-attr); }
.token-string     { color: var(--cf-str); }
.token-keyword    { color: var(--cf-key); }
.token-number     { color: var(--cf-num); }
.token-function   { color: var(--cf-fn); }
.token-punctuation { color: var(--cf-punc); }
.token-operator   { color: var(--cf-op); }
.token-selector   { color: var(--cf-sel); }
.token-property   { color: var(--cf-prop); }
.token-atrule     { color: var(--cf-atrule); }
.token-entity     { color: var(--cf-entity); }
.token-pseudo     { color: var(--cf-pseudo); }
.token-builtin    { color: var(--cf-builtin); }