/* ═══════════════════════════════════════════════════════════
   Polar 365 — stylesheet
   ═══════════════════════════════════════════════════════════ */

/* Tokens */

:root {
  --mantle: #02142F;
  --mantle-trans: #02142F87;
  --base: #02060D;
  --text: #EEF7FA;
  --link: #309197;
  --title: #6895B1;
  --header: #90D0D2;
  --radius-sm: 5px;
  --radius-md: 8px;
  --radius-lg: 10px;
  --max-w: 850px;
}

/* Reset */

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

ol,
ul {
  list-style: none;
}

/* Base */

body {
  font-family: 'Crimson Pro', Georgia, serif;
  font-size: 1.1rem;
  min-height: 100vh;
  background-color: var(--base);
  color: var(--text);
  display: flex;
  flex-direction: column;
  position: relative;
  overflow-x: hidden;
}

a {
  color: var(--link);
  text-decoration: none;
}

/* Aurora */

.aurora-bg {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  overflow: hidden;
}

.aurora-bg__stars {
  position: absolute;
  inset: 0;
  background-image:
    radial-gradient(1px 1px at 10% 15%, rgba(255, 255, 255, 0.7) 0%, transparent 100%),
    radial-gradient(1px 1px at 22% 55%, rgba(255, 255, 255, 0.5) 0%, transparent 100%),
    radial-gradient(1px 1px at 35% 30%, rgba(255, 255, 255, 0.8) 0%, transparent 100%),
    radial-gradient(1px 1px at 48% 70%, rgba(255, 255, 255, 0.6) 0%, transparent 100%),
    radial-gradient(1px 1px at 60% 10%, rgba(255, 255, 255, 0.9) 0%, transparent 100%),
    radial-gradient(1px 1px at 72% 45%, rgba(255, 255, 255, 0.5) 0%, transparent 100%),
    radial-gradient(1px 1px at 83% 80%, rgba(255, 255, 255, 0.7) 0%, transparent 100%),
    radial-gradient(1px 1px at 92% 25%, rgba(255, 255, 255, 0.6) 0%, transparent 100%),
    radial-gradient(1px 1px at 5% 85%, rgba(255, 255, 255, 0.8) 0%, transparent 100%),
    radial-gradient(1px 1px at 17% 40%, rgba(255, 255, 255, 0.5) 0%, transparent 100%),
    radial-gradient(1px 1px at 29% 90%, rgba(255, 255, 255, 0.7) 0%, transparent 100%),
    radial-gradient(1px 1px at 55% 50%, rgba(255, 255, 255, 0.6) 0%, transparent 100%),
    radial-gradient(1px 1px at 77% 65%, rgba(255, 255, 255, 0.8) 0%, transparent 100%),
    radial-gradient(1px 1px at 88% 35%, rgba(255, 255, 255, 0.5) 0%, transparent 100%),
    radial-gradient(1px 1px at 43% 20%, rgba(255, 255, 255, 0.9) 0%, transparent 100%);
}

.aurora-bg__band {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
}

.aurora-bg__band--a {
  width: 80vw;
  height: 35vh;
  top: -10vh;
  left: -10vw;
  background: radial-gradient(ellipse, #00c8a0 0%, transparent 70%);
  opacity: 0.5;
  animation: aurora-a 3s ease-in-out infinite alternate;
}

.aurora-bg__band--b {
  width: 55vw;
  height: 28vh;
  top: -6vh;
  right: -5vw;
  background: radial-gradient(ellipse, #6895B1 0%, transparent 70%);
  opacity: 0.4;
  animation: aurora-b 3s ease-in-out infinite alternate;
}

.aurora-bg__band--c {
  width: 45vw;
  height: 22vh;
  top: 5vh;
  left: 25vw;
  background: radial-gradient(ellipse, #cba6f7 0%, transparent 70%);
  opacity: 0.2;
  animation: aurora-c 3s ease-in-out infinite alternate;
}

@keyframes aurora-a {
  from {
    transform: translateX(0) translateY(0) scaleX(1);
  }

  to {
    transform: translateX(10vw) translateY(6vh) scaleX(1.2);
  }
}

@keyframes aurora-b {
  from {
    transform: translateX(0) translateY(0);
  }

  to {
    transform: translateX(-8vw) translateY(8vh);
  }
}

@keyframes aurora-c {
  from {
    transform: translateX(0) translateY(0) scaleY(1);
  }

  to {
    transform: translateX(6vw) translateY(-4vh) scaleY(1.3);
  }
}

/* remove old body::before / body::after aurora rules */
body::before,
body::after {
  content: none;
}

/* Navigation */

.main-navigation {
  position: relative;
  z-index: 1;
  background-color: color-mix(in hsl, var(--mantle-trans), transparent);
  display: flex;
  flex-direction: row;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
  width: 100%;
  margin: 0 auto 1rem;
  font-size: clamp(1rem, 6vw, 1.5rem);
}

.main-navigation img {
  width: 100px;
  height: auto;
  display: block;
}

.main-navigation a {
  font-size: 0.75em;
  opacity: 0.6;
  transition: opacity 0.2s;
}

.main-navigation a:hover {
  opacity: 1;
}

.main-navigation a.curpage {
  opacity: 1;
  border-bottom: 2px solid var(--link);
}

/* Cards */

.post-base,
.page-base {
  position: relative;
  z-index: 1;
  background-color: var(--mantle-trans);
  border-radius: var(--radius-lg);
  display: flex;
  flex-direction: column;
  padding: 1.25rem;
  margin: 0 auto;
  width: 100%;
  max-width: var(--max-w);
  gap: 1rem;
}

/* Content */

.post-content,
.page-content {
  line-height: 1.75;
  font-size: clamp(0.95rem, 3vw, 1.05rem);
}

.post-content h1,
.post-content h2,
.post-content h3,
.page-content h1,
.page-content h2,
.page-content h3 {
  color: var(--header);
  margin: 1.5rem 0 0.5rem;
}

.post-content p,
.page-content p {
  margin-bottom: 1rem;
  text-align: justify;
}

.post-content code,
.page-content code {
  background-color: var(--base);
  padding: 0.15rem 0.4rem;
  border-radius: 4px;
  font-size: 0.9em;
}

.post-content pre,
.page-content pre {
  background-color: var(--base);
  padding: 1rem;
  border-radius: var(--radius-md);
  overflow-x: auto;
  margin-bottom: 1rem;
}

.post-content pre code,
.page-content pre code {
  background: none;
  padding: 0;
}

.post-content blockquote,
.page-content blockquote {
  border-left: 3px solid var(--link);
  padding-left: 1rem;
  opacity: 0.8;
  margin-bottom: 1rem;
}

.post-content figure,
.post-content img {
  max-width: 100%;
  height: auto;
  display: block;
  margin: 0 auto;
}

.post-content figcaption {
  text-align: center;
}

/* Post header */

.post-header {
  color: var(--title);
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  border-bottom: 1px solid var(--base);
  padding-bottom: 0.75rem;
}

.post-title {
  font-size: clamp(1.4rem, 5vw, 2rem);
  font-weight: 700;
}

.post-date {
  font-size: 0.9rem;
  font-weight: 400;
  opacity: 0.6;
}

.post-time-to-read {
  font-size: 0.85rem;
  font-weight: 400;
  opacity: 0.5;
}

/* Post navigation */

.post-navigation {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: row;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  width: 100%;
  max-width: var(--max-w);
  margin: 1rem auto;
  font-size: clamp(0.9rem, 4vw, 1.1rem);
}

.post-navigation div:last-child {
  margin-left: auto;
}

.post-navigation a {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.4rem 0.75rem;
  border-radius: var(--radius-sm);
  background-color: var(--mantle);
  transition: opacity 0.2s;
}

.post-navigation a:hover {
  opacity: 0.75;
}

/* Link hover bracket effect (shared) */

.posts-of-this-month li a,
.post-list li a {
  display: inline-block;
  position: relative;
  padding: 0 0.5rem;
  transition: opacity 0.2s;
}

.posts-of-this-month li a::before,
.posts-of-this-month li a::after,
.post-list li a::before,
.post-list li a::after {
  content: '';
  position: absolute;
  top: 0;
  bottom: 0;
  width: 6px;
  opacity: 0;
  transition: opacity 0.2s, transform 0.2s;
}

.posts-of-this-month li a::before,
.post-list li a::before {
  left: 0;
  border-left: 2px solid var(--link);
  border-top: 2px solid var(--link);
  border-bottom: 2px solid var(--link);
  transform: translateX(4px);
}

.posts-of-this-month li a::after,
.post-list li a::after {
  right: 0;
  border-right: 2px solid var(--link);
  border-top: 2px solid var(--link);
  border-bottom: 2px solid var(--link);
  transform: translateX(-4px);
}

.posts-of-this-month li a:hover::before,
.posts-of-this-month li a:hover::after,
.post-list li a:hover::before,
.post-list li a:hover::after {
  opacity: 1;
  transform: translateX(0);
}

/* Posts of this month */

.posts-of-this-month {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.posts-of-this-month h1 {
  font-size: clamp(1.2rem, 4vw, 1.6rem);
  border-bottom: 1px solid var(--base);
  padding-bottom: 0.5rem;
}

.posts-of-this-month ul {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

/* Post list */

.post-list {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.post-list li a {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.4rem 0.5rem;
  border-radius: var(--radius-sm);
}

.post-list li a span:first-child {
  opacity: 0.5;
  font-size: 0.9em;
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
}

/* Month navigator (JS-generated) */

.month-nav {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin: 0 auto;
}

.month-nav button {
  background-color: var(--title);
  color: var(--text);
  border-radius: 100%;
  padding: 4px;
  border: none;
  cursor: pointer;
  transition: opacity 0.2s;
}

.month-nav button:disabled {
  opacity: 0.3;
  cursor: default;
}

.month-nav button:not(:disabled):hover {
  opacity: 0.75;
}

.month-nav__label {
  font-weight: bold;
  min-width: 80px;
  text-align: center;
}

/* Day pills (JS-generated) */

#month-days {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
  list-style: none;
  padding: 0;
  margin: 0;
}

.month-days__link {
  display: inline-block;
  padding: 2px 6px;
  border: 1px solid var(--title);
  border-radius: 10px;
  text-decoration: none;
  font-size: 0.85rem;
  color: var(--text);
  transition: background-color 0.15s, color 0.15s;
}

.month-days__link:hover {
  background-color: var(--mantle);
}

.month-days__link--active {
  background-color: var(--title);
  color: var(--base);
}

.month-days__link--today {
  font-weight: bold;
  border-color: var(--link);
}

/* Inline day content (JS-generated) */

.day-content {
  margin-top: 2rem;
  width: 100%;
  max-width: var(--max-w);
  margin-left: auto;
  margin-right: auto;
}

/* Footer */

footer {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  margin-top: auto;
  padding: 1rem;
  font-size: 0.9rem;
  opacity: 0.5;
}

/* Tablet */

@media (max-width: 860px) {

  .post-base,
  .page-base {
    border-radius: var(--radius-md);
    padding: 1rem;
  }
}

/* Mobile */

@media (max-width: 600px) {
  body {
    padding: 0.5rem;
  }

  .main-navigation {
    background-color: var(--mantle-trans);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    flex-direction: column;
    align-items: flex-start;
    gap: 0.5rem;
    width: calc(100% - 1rem);
  }

  .post-base,
  .page-base {
    width: calc(100% - 1rem);
    padding: 1rem;
  }

  .post-navigation {
    width: calc(100% - 1rem);
    flex-direction: column;
    align-items: stretch;
  }

  .post-navigation div:last-child {
    margin-left: 0;
  }

  .post-navigation a {
    justify-content: center;
  }

  footer {
    font-size: 0.8rem;
  }
}