/* ==========================================================================
   NIGHTTIDE THEME
   Inspired by Massively (HTML5 UP) — dark editorial feel, serif + heavy sans,
   floating white content panel, ghost buttons, thin border grids.
   ========================================================================== */

/* --- CSS Variables / Design Tokens --- */
:root {
  --color-bg-deep: #1a2130;
  --color-bg-panel: #ffffff;
  --color-bg-alt: #f4f5f6;
  --color-bg-footer: #232a35;
  --color-text: #2b3240;
  --color-text-light: #6b7385;
  --color-text-inv: #ffffff;
  --color-accent: #1ab8e8;
  --color-accent-hover: #14a0cc;
  --color-border: #e4e6ea;
  --color-border-light: #eeeff1;
  --color-overlay: rgba(26, 33, 48, 0.55);

  --font-body: "Georgia", "Times New Roman", "Merriweather", serif;
  --font-heading: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
  --font-mono: "Courier New", monospace;

  --max-width: 72rem;
  --content-width: 54rem;
  --gap: 2rem;
  --radius-sm: 0;
  --radius-md: 0;
  --transition: 0.25s ease;
}

/* --- Reset --- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { font-size: 16px; scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }

@media (max-width: 1680px) { html { font-size: 15px; } }
@media (max-width: 1280px) { html { font-size: 14px; } }
@media (max-width: 480px) { html { font-size: 13px; } }

body {
  font-family: var(--font-body);
  font-weight: 400;
  line-height: 1.9;
  color: var(--color-text);
  background-color: var(--color-bg-deep);
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; height: auto; display: block; }
a { color: var(--color-text); text-decoration: none; border-bottom: 1px dotted rgba(43,50,64,0.4); transition: color var(--transition), border-color var(--transition); }
a:hover { color: var(--color-accent); border-bottom-color: transparent; }

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 800;
  line-height: 1.25;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--color-text);
}
h1 { font-size: 3.2rem; margin-bottom: 1.5rem; }
h2 { font-size: 1.75rem; margin-bottom: 1.25rem; }
h3 { font-size: 1.25rem; margin-bottom: 1rem; }
h4 { font-size: 1rem; margin-bottom: 0.75rem; }

p { margin-bottom: 1.5rem; text-align: justify; }
ul, ol { margin-bottom: 1.5rem; padding-left: 1.5rem; }
blockquote { border-left: 4px solid var(--color-accent); padding: 0.5rem 0 0.5rem 1.5rem; font-style: italic; margin-bottom: 1.5rem; }

/* --- Buttons --- */
.btn {
  display: inline-block;
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 0.8rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 0.85rem 2.2rem;
  border: 2px solid var(--color-text);
  background: transparent;
  color: var(--color-text);
  cursor: pointer;
  transition: all var(--transition);
  text-decoration: none;
  border-bottom-style: solid;
  line-height: 1;
}
.btn:hover { border-color: var(--color-accent); color: var(--color-accent); background: transparent; border-bottom-color: var(--color-accent); }
.btn--inv { border-color: #fff; color: #fff; }
.btn--inv:hover { border-color: var(--color-accent); color: var(--color-accent); }
.btn--large { padding: 1rem 3rem; font-size: 0.85rem; }

/* --- Skip Link --- */
.skip-link { position: absolute; top: -100%; left: 0; background: var(--color-accent); color: #fff; padding: 0.5rem 1rem; z-index: 9999; font-family: var(--font-heading); }
.skip-link:focus { top: 0; }

/* ==========================================================================
   SITE WRAPPER — floating panel over dark bg
   ========================================================================== */
.site-bg {
  position: fixed;
  inset: 0;
  z-index: -1;
  background-color: var(--color-bg-deep);
  background-image:
    repeating-linear-gradient(
      0deg,
      transparent,
      transparent 2px,
      rgba(255,255,255,0.015) 2px,
      rgba(255,255,255,0.015) 4px
    );
}

/* ==========================================================================
   HERO (intro) — full viewport, dark, centered, fades feel
   ========================================================================== */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  color: var(--color-text-inv);
  padding: 6rem 2rem;
  z-index: 1;
}
.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(26,33,48,0.2) 0%, rgba(26,33,48,0.7) 100%);
  z-index: -1;
}
.hero__title {
  font-size: 4.5rem;
  line-height: 1.05;
  color: #fff;
  margin-bottom: 1.5rem;
  letter-spacing: 0.06em;
}
.hero__subtitle {
  font-family: var(--font-body);
  font-weight: 400;
  font-style: italic;
  font-size: 1.2rem;
  line-height: 1.8;
  text-transform: none;
  letter-spacing: 0;
  max-width: 38rem;
  margin: 0 auto 2.5rem;
  opacity: 0.85;
}
.hero__subtitle p { text-align: center; color: #fff; }
.hero__cta .btn--inv { border-width: 2px; }
.hero__scroll-hint {
  position: absolute;
  bottom: 2.5rem;
  left: 50%;
  transform: translateX(-50%);
  width: 28px;
  height: 44px;
  border: 2px solid rgba(255,255,255,0.4);
  border-radius: 14px;
}
.hero__scroll-hint::after {
  content: '';
  position: absolute;
  top: 8px;
  left: 50%;
  transform: translateX(-50%);
  width: 4px;
  height: 8px;
  background: rgba(255,255,255,0.6);
  border-radius: 2px;
  animation: scrollPulse 2s ease-in-out infinite;
}
@keyframes scrollPulse {
  0%, 100% { opacity: 1; transform: translateX(-50%) translateY(0); }
  50% { opacity: 0.3; transform: translateX(-50%) translateY(10px); }
}

@media (max-width: 736px) {
  .hero { min-height: 85vh; padding: 4rem 1.5rem; }
  .hero__title { font-size: 2.8rem; }
  .hero__subtitle { font-size: 1rem; }
}

/* ==========================================================================
   SITE HEADER — brand + nav, floating style
   ========================================================================== */
.site-header {
  position: relative;
  z-index: 10;
  max-width: var(--max-width);
  margin: 0 auto;
  width: calc(100% - 4rem);
}
.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: rgba(255,255,255,0.12);
  backdrop-filter: blur(6px);
  padding: 0 2rem;
  height: 3.8rem;
  line-height: 3.8rem;
}
.site-header__brand {
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 1.15rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: #fff;
  border: none;
  white-space: nowrap;
}
.site-header__brand:hover { color: var(--color-accent); }
.site-header__brand img { height: 2rem; display: inline-block; vertical-align: middle; margin-right: 0.5rem; }

/* Nav */
.site-nav__list {
  display: flex;
  list-style: none;
  gap: 0;
  padding: 0;
  margin: 0;
}
.site-nav__list li a {
  display: block;
  padding: 0 1.1rem;
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.85);
  border: none;
  transition: color var(--transition);
}
.site-nav__list li a:hover { color: var(--color-accent); }

/* Hamburger */
.hamburger { display: none; background: none; border: none; cursor: pointer; padding: 0.5rem; }
.hamburger__line { display: block; width: 24px; height: 2px; background: #fff; margin: 5px 0; transition: all 0.3s; }

@media (max-width: 980px) {
  .site-header { width: calc(100% - 2rem); }
  .hamburger { display: block; }
  .site-nav { display: none; position: absolute; top: 100%; left: 0; right: 0; background: rgba(26,33,48,0.96); backdrop-filter: blur(10px); }
  .site-nav.open { display: block; }
  .site-nav__list { flex-direction: column; padding: 1rem 0; }
  .site-nav__list li a { padding: 0.75rem 2rem; font-size: 0.85rem; }
}

/* ==========================================================================
   CONTENT PANEL — the white floating area
   ========================================================================== */
.content-panel {
  position: relative;
  z-index: 2;
  max-width: var(--max-width);
  margin: 0 auto;
  width: calc(100% - 4rem);
  background: var(--color-bg-panel);
}

@media (max-width: 480px) { .content-panel { width: 100%; } }

/* ==========================================================================
   SECTIONS — generic interior padding
   ========================================================================== */
.section {
  padding: 5rem 5rem 3rem;
  border-top: 2px solid var(--color-border-light);
}
.section:first-child { border-top: none; }
.section--alt { background: var(--color-bg-alt); }
.section__eyebrow {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 0.7rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--color-text-light);
  margin-bottom: 0.5rem;
}
.section__title {
  font-size: 2.2rem;
  margin-bottom: 0.75rem;
}
.section__intro {
  max-width: 40rem;
  color: var(--color-text-light);
  font-style: italic;
  margin-bottom: 3rem;
}

@media (max-width: 1280px) { .section { padding: 4rem 4rem 2rem; } }
@media (max-width: 736px) { .section { padding: 3rem 1.5rem 1.5rem; } }

/* ==========================================================================
   FEATURED POST — large single post at top
   ========================================================================== */
.featured-post {
  padding: 5rem 5rem 3rem;
  text-align: center;
}
.featured-post__date {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 0.7rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--color-text-light);
  display: block;
  margin-bottom: 1rem;
}
.featured-post__title {
  font-size: 2.8rem;
  line-height: 1.15;
  margin-bottom: 1.25rem;
}
.featured-post__title a { border: none; color: inherit; }
.featured-post__title a:hover { color: var(--color-accent); }
.featured-post__excerpt {
  font-style: italic;
  max-width: 36rem;
  margin: 0 auto 2rem;
  color: var(--color-text-light);
  text-align: center;
}
.featured-post__image {
  margin: 2rem 0;
  overflow: hidden;
}
.featured-post__image img {
  width: 100%;
  transition: transform 0.6s ease;
}
.featured-post__image:hover img { transform: scale(1.02); }
.featured-post__actions { margin-top: 2rem; }

@media (max-width: 1280px) { .featured-post { padding: 4rem 4rem 2rem; } }
@media (max-width: 736px) {
  .featured-post { padding: 3rem 1.5rem 1.5rem; }
  .featured-post__title { font-size: 2rem; }
}

/* ==========================================================================
   POST GRID — 2-col with thin border dividers (Massively DNA)
   ========================================================================== */
.post-grid {
  display: flex;
  flex-wrap: wrap;
  padding: 0;
}
.post-grid__item {
  width: 50%;
  padding: 3.5rem;
  border-top: 2px solid var(--color-border-light);
  border-left: 2px solid var(--color-border-light);
  text-align: center;
}
.post-grid__item:nth-child(2n - 1) { border-left: 0; }
.post-grid__item:nth-child(-n + 2) { border-top: 0; }

.post-grid__date {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 0.68rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-text-light);
  display: block;
  margin-bottom: 0.75rem;
}
.post-grid__title {
  font-size: 1.4rem;
  line-height: 1.25;
  margin-bottom: 1rem;
}
.post-grid__title a { border: none; color: inherit; }
.post-grid__title a:hover { color: var(--color-accent); }
.post-grid__image {
  margin-bottom: 1.25rem;
  overflow: hidden;
}
.post-grid__image img { width: 100%; transition: transform 0.5s ease; }
.post-grid__image:hover img { transform: scale(1.03); }
.post-grid__excerpt { font-size: 0.92rem; color: var(--color-text-light); }
.post-grid__actions { margin-top: 1.25rem; }

@media (max-width: 980px) { .post-grid__item { padding: 2.5rem; } }
@media (max-width: 736px) {
  .post-grid__item {
    width: 100%;
    padding: 2rem 1.5rem;
    border-left: 0 !important;
  }
  .post-grid__item:nth-child(-n + 2) { border-top: 2px solid var(--color-border-light); }
  .post-grid__item:first-child { border-top: 0; }
}

/* ==========================================================================
   TOPICS — editorial category cards
   ========================================================================== */
.topics-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0;
}
.topic-card {
  padding: 2.5rem 2.5rem 2rem;
  border-top: 2px solid var(--color-border-light);
  border-left: 2px solid var(--color-border-light);
  transition: background var(--transition);
}
.topic-card:hover { background: var(--color-bg-alt); }
.topic-card:nth-child(2n - 1) { border-left: 0; }
.topic-card:nth-child(-n + 2) { border-top: 0; }

.topic-card__name {
  font-size: 1.15rem;
  margin-bottom: 0.75rem;
  position: relative;
  padding-bottom: 0.75rem;
}
.topic-card__name::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 2.5rem;
  height: 2px;
  background: var(--color-accent);
}
.topic-card__desc { font-size: 0.9rem; color: var(--color-text-light); line-height: 1.8; }
.topic-card__desc p { text-align: left; margin-bottom: 0.5rem; }

@media (max-width: 736px) {
  .topics-grid { grid-template-columns: 1fr; }
  .topic-card { border-left: 0 !important; }
  .topic-card:nth-child(-n + 2) { border-top: 2px solid var(--color-border-light); }
  .topic-card:first-child { border-top: 0; }
}

/* ==========================================================================
   FAQ — clean accordion, editorial style
   ========================================================================== */
.faq-list { max-width: var(--content-width); }
.faq-item {
  border-bottom: 2px solid var(--color-border-light);
  padding: 1.75rem 0;
}
.faq-item:first-child { padding-top: 0; }
.faq-question {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1rem;
  letter-spacing: 0.03em;
  text-transform: none;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  user-select: none;
  background: none;
  border: none;
  width: 100%;
  text-align: left;
  color: var(--color-text);
  padding: 0;
  line-height: 1.5;
}
.faq-question::after {
  content: '+';
  font-size: 1.4rem;
  font-weight: 300;
  flex-shrink: 0;
  transition: transform var(--transition);
  line-height: 1;
}
.faq-item.open .faq-question::after { content: '−'; }
.faq-answer {
  display: none;
  padding-top: 1rem;
  color: var(--color-text-light);
  font-size: 0.95rem;
  line-height: 1.85;
}
.faq-item.open .faq-answer { display: block; }
.faq-answer p { text-align: left; }

/* ==========================================================================
   PAGINATION
   ========================================================================== */
.pagination {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 0.4rem;
  padding: 3rem 0 1rem;
  flex-wrap: wrap;
}
.pagination a, .pagination span {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 2.5rem;
  height: 2.5rem;
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 0.75rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  border: 2px solid var(--color-border);
  color: var(--color-text);
  transition: all var(--transition);
  text-decoration: none;
  border-bottom-style: solid;
}
.pagination a:hover { border-color: var(--color-accent); color: var(--color-accent); }
.pagination a.active { background: var(--color-text); color: #fff; border-color: var(--color-text); }
.pagination .prev, .pagination .next { padding: 0 1rem; }

/* ==========================================================================
   PAGE — content pages
   ========================================================================== */
.page-content {
  padding: 5rem 6rem 4rem;
  max-width: var(--content-width);
  margin: 0 auto;
}
.page-content__title {
  font-size: 3rem;
  text-align: center;
  margin-bottom: 2.5rem;
}
.page-content__body { line-height: 2; }
.page-content__body h2 { margin-top: 2.5rem; }
.page-content__body h3 { margin-top: 2rem; }
.page-content__body img { margin: 2rem auto; }
.page-content__body a { color: var(--color-accent); border-bottom-color: rgba(26,184,232,0.3); }
.page-content__body a:hover { border-bottom-color: transparent; }

@media (max-width: 1280px) { .page-content { padding: 4rem 4rem 3rem; } }
@media (max-width: 736px) { .page-content { padding: 3rem 1.5rem 2rem; } .page-content__title { font-size: 2.2rem; } }

/* ==========================================================================
   SINGLE POST
   ========================================================================== */
.post-single {
  padding: 5rem 6rem 4rem;
}
.post-single__header {
  text-align: center;
  margin-bottom: 3rem;
}
.post-single__date {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 0.7rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--color-text-light);
  display: block;
  margin-bottom: 1rem;
}
.post-single__title {
  font-size: 3rem;
  line-height: 1.15;
  margin-bottom: 1.25rem;
}
.post-single__excerpt {
  font-style: italic;
  max-width: 36rem;
  margin: 0 auto;
  color: var(--color-text-light);
  text-align: center;
}
.post-single__cover {
  margin: 0 -2rem 3rem;
  overflow: hidden;
}
.post-single__cover img { width: 100%; }
.post-single__body {
  max-width: var(--content-width);
  margin: 0 auto;
  line-height: 2;
}
.post-single__body h2 { margin-top: 2.5rem; }
.post-single__body h3 { margin-top: 2rem; }
.post-single__body img { margin: 2rem auto; }
.post-single__body a { color: var(--color-accent); border-bottom-color: rgba(26,184,232,0.3); }
.post-single__body a:hover { border-bottom-color: transparent; }

@media (max-width: 1280px) { .post-single { padding: 4rem 4rem 3rem; } }
@media (max-width: 736px) { .post-single { padding: 3rem 1.5rem 2rem; } .post-single__title { font-size: 2.2rem; } .post-single__cover { margin: 0 -0.5rem 2rem; } }

/* ==========================================================================
   FOOTER — dark, two-zone (matching Massively's dark footer approach)
   ========================================================================== */
.site-footer {
  background: var(--color-bg-footer);
  color: rgba(255,255,255,0.55);
  padding: 4rem 0 0;
  position: relative;
  z-index: 2;
  max-width: var(--max-width);
  margin: 0 auto;
  width: calc(100% - 4rem);
}
.site-footer a { color: rgba(255,255,255,0.7); border-bottom-color: rgba(255,255,255,0.2); }
.site-footer a:hover { color: var(--color-accent); }
.site-footer__inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  padding: 0 4rem 3rem;
  border-bottom: 1px solid rgba(255,255,255,0.1);
}
.site-footer__heading {
  font-family: var(--font-heading);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: #fff;
  margin-bottom: 1.25rem;
}
.site-footer__nav-list {
  list-style: none;
  padding: 0;
  margin: 0;
  columns: 2;
  gap: 0.5rem;
}
.site-footer__nav-list li { margin-bottom: 0.5rem; }
.site-footer__nav-list li a { font-size: 0.9rem; }
.site-footer__contact p { font-size: 0.9rem; margin-bottom: 0.5rem; }
.site-footer__bottom {
  text-align: center;
  padding: 1.5rem 2rem;
  font-family: var(--font-heading);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.35);
}

@media (max-width: 980px) {
  .site-footer { width: calc(100% - 2rem); }
  .site-footer__inner { grid-template-columns: 1fr; padding: 0 2rem 2rem; }
}
@media (max-width: 480px) { .site-footer { width: 100%; } }

/* ==========================================================================
   BLOG INDEX — list variant
   ========================================================================== */
.blog-header {
  padding: 5rem 5rem 2rem;
  text-align: center;
}
.blog-header__title { font-size: 2.5rem; }

/* ==========================================================================
   UTILITIES
   ========================================================================== */
.sr-only { position: absolute; width: 1px; height: 1px; margin: -1px; padding: 0; overflow: hidden; clip: rect(0,0,0,0); border: 0; }
.text-center { text-align: center; }
.mt-0 { margin-top: 0; }

/* ==========================================================================
   ANIMATION — fade-in on scroll
   ========================================================================== */
.fade-up {
  opacity: 0;
  transform: translateY(1.5rem);
  transition: opacity 0.7s ease, transform 0.7s ease;
}
.fade-up.visible {
  opacity: 1;
  transform: translateY(0);
}

/* Content HTML styles — for injected HTML content */
.page-content__body table,
.post-single__body table {
  width: 100%;
  border-collapse: collapse;
  margin-bottom: 1.5rem;
}
.page-content__body th,
.post-single__body th,
.page-content__body td,
.post-single__body td {
  padding: 0.75rem 1rem;
  border: 1px solid var(--color-border);
  text-align: left;
}
.page-content__body th,
.post-single__body th {
  background: var(--color-bg-alt);
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}