/*
Theme Name: VBModern Forum
Theme URI: https://example.com/themes/vbmodern-forum
Author: ChatGPT Designer
Author URI: https://example.com
Description: A vBulletin-inspired, modern and responsive forum theme for WordPress with a sophisticated UI optimized for community discussion.
Version: 1.0.0
License: GNU General Public License v2 or later
License URI: https://www.gnu.org/licenses/gpl-2.0.html
Text Domain: vbmodern-forum
Tags: forum, community, responsive, modern, dark, light, accessibility
*/

/* Root Variables */
:root {
  --color-bg: #0f172a;
  --color-bg-alt: #111c33;
  --color-bg-card: rgba(17, 28, 51, 0.75);
  --color-surface: #1f2937;
  --color-surface-alt: rgba(148, 163, 184, 0.1);
  --color-primary: #38bdf8;
  --color-primary-dark: #0ea5e9;
  --color-accent: #f472b6;
  --color-accent-dark: #ec4899;
  --color-text: #e2e8f0;
  --color-text-muted: #94a3b8;
  --color-border: rgba(148, 163, 184, 0.25);
  --color-success: #34d399;
  --color-warning: #facc15;
  --color-danger: #f87171;
  --radius-sm: 8px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --shadow-soft: 0 18px 45px rgba(15, 23, 42, 0.35);
  --shadow-card: 0 14px 30px rgba(15, 23, 42, 0.25);
  --shadow-focus: 0 0 0 3px rgba(56, 189, 248, 0.35);
  --font-sans: 'Inter', 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  --font-mono: 'Fira Code', 'JetBrains Mono', monospace;
  --transition-base: 200ms ease;
}

@media (prefers-color-scheme: light) {
  :root {
    --color-bg: #f8fafc;
    --color-bg-alt: #f1f5f9;
    --color-bg-card: rgba(255, 255, 255, 0.85);
    --color-surface: #ffffff;
    --color-surface-alt: rgba(15, 23, 42, 0.08);
    --color-primary: #0284c7;
    --color-primary-dark: #0369a1;
    --color-accent: #db2777;
    --color-accent-dark: #be185d;
    --color-text: #0f172a;
    --color-text-muted: #475569;
    --color-border: rgba(148, 163, 184, 0.35);
    --shadow-soft: 0 18px 45px rgba(15, 23, 42, 0.12);
    --shadow-card: 0 14px 30px rgba(15, 23, 42, 0.1);
  }
}

html {
  box-sizing: border-box;
  scroll-behavior: smooth;
}

*, *::before, *::after {
  box-sizing: inherit;
}

body {
  font-family: var(--font-sans);
  background: radial-gradient(circle at top left, rgba(14, 165, 233, 0.15), transparent 40%),
    radial-gradient(circle at top right, rgba(236, 72, 153, 0.18), transparent 42%),
    linear-gradient(180deg, var(--color-bg) 0%, var(--color-bg-alt) 100%);
  color: var(--color-text);
  margin: 0;
  min-height: 100vh;
}

.site {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  min-height: 100vh;
  background: linear-gradient(135deg, rgba(56, 189, 248, 0.08), rgba(244, 114, 182, 0.05));
}

.header {
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(18px);
  background: rgba(15, 23, 42, 0.75);
  border-bottom: 1px solid var(--color-border);
  box-shadow: var(--shadow-soft);
}

.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: 1280px;
  margin: 0 auto;
  padding: 1rem 1.75rem;
  gap: 1.5rem;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  color: var(--color-text);
  text-decoration: none;
  font-weight: 700;
  font-size: 1.1rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.logo__badge {
  width: 42px;
  height: 42px;
  border-radius: var(--radius-md);
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
  display: grid;
  place-items: center;
  font-size: 1.1rem;
  font-weight: 600;
  color: #0f172a;
  box-shadow: var(--shadow-card);
}

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

.nav__menu {
  display: flex;
  gap: 0.75rem;
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav__link {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.65rem 1rem;
  border-radius: var(--radius-sm);
  text-decoration: none;
  font-weight: 500;
  color: var(--color-text);
  transition: background var(--transition-base), color var(--transition-base), transform var(--transition-base);
}

.nav__link:hover,
.nav__link:focus {
  background: var(--color-surface-alt);
  color: var(--color-primary);
  transform: translateY(-1px);
}

.nav__cta {
  padding: 0.65rem 1.4rem;
  border-radius: var(--radius-md);
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
  color: #0f172a;
  font-weight: 600;
  box-shadow: var(--shadow-card);
}

.nav__toggle {
  display: none;
  background: transparent;
  border: none;
  color: var(--color-text);
  font-size: 1.4rem;
}

.hero {
  position: relative;
  overflow: hidden;
  padding: 4.5rem 1.5rem 3rem;
}

.hero::before,
.hero::after {
  content: "";
  position: absolute;
  border-radius: 50%;
  filter: blur(90px);
  opacity: 0.75;
}

.hero::before {
  width: 380px;
  height: 380px;
  background: rgba(14, 165, 233, 0.22);
  top: -160px;
  left: -120px;
}

.hero::after {
  width: 320px;
  height: 320px;
  background: rgba(244, 114, 182, 0.24);
  bottom: -140px;
  right: -100px;
}

.hero__inner {
  position: relative;
  max-width: 1180px;
  margin: 0 auto;
  display: grid;
  gap: 3rem;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  align-items: center;
}

.hero__content {
  grid-column: span 7;
  display: grid;
  gap: 1.5rem;
}

.hero__title {
  font-size: clamp(2.5rem, 4vw + 1rem, 4rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  margin: 0;
}

.hero__title strong {
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
  -webkit-background-clip: text;
  color: transparent;
}

.hero__meta {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  color: var(--color-text-muted);
  font-size: 0.95rem;
}

.hero__actions {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

.button {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.75rem 1.4rem;
  border-radius: var(--radius-md);
  border: 1px solid transparent;
  font-weight: 600;
  text-decoration: none;
  transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.button--primary {
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
  color: #0f172a;
  box-shadow: var(--shadow-card);
}

.button--secondary {
  background: transparent;
  color: var(--color-text);
  border-color: var(--color-border);
}

.button:hover,
.button:focus {
  transform: translateY(-2px);
  box-shadow: var(--shadow-soft);
}

.hero__stats {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
  padding: 1rem;
  border-radius: var(--radius-lg);
  background: var(--color-surface-alt);
  backdrop-filter: blur(22px);
}

.hero__stat {
  display: grid;
  gap: 0.35rem;
}

.hero__stat-value {
  font-size: 1.6rem;
  font-weight: 700;
}

.hero__stat-label {
  color: var(--color-text-muted);
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
}

.hero__preview {
  grid-column: span 5;
  background: var(--color-bg-card);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  padding: 1.5rem;
  box-shadow: var(--shadow-card);
  display: grid;
  gap: 1.25rem;
}

.hero__preview-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.hero__preview-tabs {
  display: flex;
  gap: 0.5rem;
}

.hero__preview-tab {
  padding: 0.55rem 1rem;
  border-radius: 999px;
  background: rgba(148, 163, 184, 0.12);
  color: var(--color-text-muted);
  font-size: 0.85rem;
}

.hero__preview-tab--active {
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
  color: #0f172a;
}

.hero__preview-topic {
  display: grid;
  gap: 0.4rem;
  padding: 1rem;
  border-radius: var(--radius-md);
  background: rgba(148, 163, 184, 0.08);
}

.hero__preview-topic h4 {
  margin: 0;
  font-size: 1rem;
}

.hero__preview-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}

.tag {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.4rem 0.75rem;
  border-radius: 999px;
  font-size: 0.75rem;
  background: rgba(56, 189, 248, 0.16);
  color: var(--color-primary);
}

.content {
  max-width: 1280px;
  width: 100%;
  margin: 0 auto;
  padding: 2.5rem 1.75rem 4rem;
  display: grid;
  gap: 2.5rem;
}

.section {
  display: grid;
  gap: 1.5rem;
}

.section__header {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 1rem;
}

.section__title {
  margin: 0;
  font-size: 1.8rem;
  font-weight: 700;
}

.section__subtitle {
  margin: 0;
  color: var(--color-text-muted);
}

.section__tabs {
  display: inline-flex;
  border-radius: 999px;
  background: rgba(148, 163, 184, 0.12);
  padding: 0.3rem;
}

.section__tab {
  border: none;
  background: transparent;
  padding: 0.6rem 1.2rem;
  border-radius: 999px;
  color: var(--color-text-muted);
  font-weight: 500;
  cursor: pointer;
  transition: background var(--transition-base), color var(--transition-base);
}

.section__tab--active {
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
  color: #0f172a;
}

.board-grid {
  display: grid;
  gap: 1.5rem;
}

.board-card {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(280px, 0.7fr);
  gap: 1.75rem;
  padding: 1.75rem;
  background: var(--color-bg-card);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-card);
  backdrop-filter: blur(16px);
}

.board-card__header {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.board-card__title {
  margin: 0;
  font-size: 1.35rem;
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
}

.board-card__description {
  color: var(--color-text-muted);
  margin: 0;
  line-height: 1.6;
}

.board-card__meta {
  display: flex;
  gap: 1.25rem;
  flex-wrap: wrap;
  color: var(--color-text-muted);
  font-size: 0.85rem;
}

.board-card__meta span {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
}

.board-card__insights {
  display: grid;
  gap: 1rem;
  align-content: start;
}

.board-card__latest {
  padding: 1.1rem;
  border-radius: var(--radius-md);
  background: rgba(15, 23, 42, 0.45);
  border: 1px solid rgba(148, 163, 184, 0.12);
  display: grid;
  gap: 0.65rem;
}

.board-card__latest h4 {
  margin: 0;
  font-size: 1rem;
}

.board-card__latest small {
  color: var(--color-text-muted);
}

.activity-stream {
  display: grid;
  gap: 1rem;
}

.activity-item {
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 1rem;
  align-items: center;
  padding: 1rem 1.25rem;
  border-radius: var(--radius-md);
  background: rgba(148, 163, 184, 0.08);
  border: 1px solid rgba(148, 163, 184, 0.12);
}

.activity-item__avatar {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
  display: grid;
  place-items: center;
  font-weight: 600;
  color: #0f172a;
}

.activity-item__meta {
  color: var(--color-text-muted);
  font-size: 0.85rem;
}

.activity-item__tag {
  padding: 0.35rem 0.75rem;
  border-radius: 999px;
  font-size: 0.75rem;
  background: rgba(56, 189, 248, 0.18);
  color: var(--color-primary);
}

.sidebar {
  display: grid;
  gap: 1.5rem;
}

.widget {
  padding: 1.5rem;
  border-radius: var(--radius-lg);
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-card);
  backdrop-filter: blur(16px);
}

.widget__title {
  margin-top: 0;
  margin-bottom: 1rem;
  font-size: 1.1rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.widget__list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 0.75rem;
}

.widget__item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  font-size: 0.95rem;
  color: var(--color-text-muted);
}

.widget__item strong {
  color: var(--color-text);
}

.widget__badge {
  padding: 0.35rem 0.75rem;
  border-radius: 999px;
  font-size: 0.75rem;
  background: rgba(148, 163, 184, 0.12);
}

.footer {
  margin-top: auto;
  padding: 2.5rem 1.5rem;
  background: rgba(15, 23, 42, 0.8);
  border-top: 1px solid var(--color-border);
}

.footer__inner {
  max-width: 1280px;
  margin: 0 auto;
  display: grid;
  gap: 2rem;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
}

.footer__brand {
  display: grid;
  gap: 1rem;
}

.footer__description {
  color: var(--color-text-muted);
  margin: 0;
}

.footer__links {
  display: grid;
  gap: 0.5rem;
}

.footer__link {
  color: var(--color-text-muted);
  text-decoration: none;
  font-size: 0.95rem;
}

.footer__link:hover,
.footer__link:focus {
  color: var(--color-primary);
}

.footer__meta {
  grid-column: 1 / -1;
  display: flex;
  align-items: center;
  justify-content: space-between;
  color: var(--color-text-muted);
  border-top: 1px solid rgba(148, 163, 184, 0.16);
  padding-top: 1.5rem;
}

/* Forum Thread Styles */
.thread-list {
  display: grid;
  gap: 1rem;
}

.thread-card {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  gap: 1.25rem;
  padding: 1.25rem 1.5rem;
  border-radius: var(--radius-md);
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-card);
  align-items: center;
  transition: transform var(--transition-base), border var(--transition-base);
}

.thread-card:hover {
  transform: translateY(-3px);
  border-color: rgba(56, 189, 248, 0.45);
}

.thread-card__icon {
  width: 52px;
  height: 52px;
  border-radius: 16px;
  background: rgba(56, 189, 248, 0.16);
  display: grid;
  place-items: center;
  font-size: 1.25rem;
  color: var(--color-primary);
}

.thread-card__meta {
  display: flex;
  gap: 1.25rem;
  color: var(--color-text-muted);
  font-size: 0.85rem;
  margin-top: 0.5rem;
}

.thread-card__status {
  display: grid;
  gap: 0.5rem;
  justify-items: end;
  text-align: right;
}

.thread-card__status strong {
  font-size: 1.1rem;
  color: var(--color-text);
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.35rem 0.75rem;
  border-radius: 999px;
  font-size: 0.75rem;
}

.badge--primary {
  background: rgba(56, 189, 248, 0.2);
  color: var(--color-primary);
}

.badge--success {
  background: rgba(52, 211, 153, 0.2);
  color: var(--color-success);
}

.badge--warning {
  background: rgba(250, 204, 21, 0.18);
  color: var(--color-warning);
}

.badge--danger {
  background: rgba(248, 113, 113, 0.22);
  color: var(--color-danger);
}

.thread-toolbar {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  align-items: center;
  justify-content: space-between;
}

.thread-toolbar__filters {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.filter-chip {
  padding: 0.55rem 1rem;
  border-radius: 999px;
  background: rgba(148, 163, 184, 0.12);
  color: var(--color-text-muted);
  font-size: 0.85rem;
  border: none;
  cursor: pointer;
  transition: background var(--transition-base), color var(--transition-base);
}

.filter-chip--active {
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
  color: #0f172a;
}

.post {
  display: grid;
  gap: 1.25rem;
  background: var(--color-bg-card);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  padding: 2rem;
  box-shadow: var(--shadow-card);
}

.post__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.post__author {
  display: flex;
  align-items: center;
  gap: 0.9rem;
}

.avatar {
  width: 56px;
  height: 56px;
  border-radius: 18px;
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
  display: grid;
  place-items: center;
  font-weight: 600;
  color: #0f172a;
}

.post__meta {
  color: var(--color-text-muted);
  font-size: 0.85rem;
}

.post__content {
  line-height: 1.7;
}

.post__content pre {
  font-family: var(--font-mono);
  background: rgba(15, 23, 42, 0.7);
  border-radius: var(--radius-md);
  padding: 1rem;
  overflow-x: auto;
  border: 1px solid rgba(148, 163, 184, 0.16);
}

.post__footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
  color: var(--color-text-muted);
}

.post__actions {
  display: inline-flex;
  gap: 0.75rem;
}

.post__action {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  color: var(--color-text-muted);
  text-decoration: none;
  font-size: 0.9rem;
  padding: 0.45rem 0.75rem;
  border-radius: 999px;
  background: rgba(148, 163, 184, 0.1);
}

.post__action:hover,
.post__action:focus {
  color: var(--color-primary);
}

.pagination {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  border-radius: 999px;
  padding: 0.35rem;
  background: rgba(148, 163, 184, 0.12);
}

.pagination__link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  color: var(--color-text-muted);
  text-decoration: none;
}

.pagination__link--active {
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
  color: #0f172a;
}

/* Forms */
.form-card {
  background: var(--color-bg-card);
  padding: 2rem;
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-card);
  display: grid;
  gap: 1.5rem;
}

.form-group {
  display: grid;
  gap: 0.5rem;
}

.form-group label {
  font-weight: 600;
}

.input,
.textarea,
.select {
  width: 100%;
  padding: 0.75rem 1rem;
  border-radius: var(--radius-md);
  border: 1px solid rgba(148, 163, 184, 0.28);
  background: rgba(15, 23, 42, 0.65);
  color: var(--color-text);
  transition: border var(--transition-base), box-shadow var(--transition-base);
}

.input:focus,
.textarea:focus,
.select:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: var(--shadow-focus);
}

/* Responsive */
@media (max-width: 1024px) {
  .hero__inner {
    grid-template-columns: repeat(6, minmax(0, 1fr));
  }

  .hero__content {
    grid-column: span 6;
  }

  .hero__preview {
    grid-column: span 6;
  }

  .board-card {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .header__inner {
    padding: 0.75rem 1.25rem;
  }

  .nav__menu {
    position: absolute;
    top: 72px;
    right: 1.5rem;
    flex-direction: column;
    padding: 1.25rem;
    background: rgba(15, 23, 42, 0.92);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-soft);
    transform-origin: top right;
    transform: scale(0.95);
    opacity: 0;
    pointer-events: none;
    transition: opacity var(--transition-base), transform var(--transition-base);
  }

  .nav__menu--open {
    opacity: 1;
    pointer-events: auto;
    transform: scale(1);
  }

  .nav__toggle {
    display: inline-flex;
  }

  .hero {
    padding-top: 3.5rem;
  }

  .hero__inner {
    grid-template-columns: repeat(1, minmax(0, 1fr));
  }

  .thread-card {
    grid-template-columns: minmax(0, 1fr);
    text-align: center;
  }

  .thread-card__meta {
    justify-content: center;
  }

  .thread-card__status {
    justify-items: center;
  }

  .footer__meta {
    flex-direction: column;
    gap: 1rem;
    text-align: center;
  }
}

@media (max-width: 480px) {
  .hero__stats {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .hero__actions {
    width: 100%;
    justify-content: stretch;
  }

  .hero__actions .button {
    justify-content: center;
    flex: 1;
  }

  .thread-toolbar {
    flex-direction: column;
    align-items: stretch;
  }

  .pagination {
    width: 100%;
    justify-content: center;
  }
}

/* Accessibility */
a:focus-visible,
button:focus-visible {
  outline: none;
  box-shadow: var(--shadow-focus);
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}