/*
 * Oblivion MyBB - Base Layout and Core Surface Styling
 * MyBB integration note:
 * This file styles stock MyBB selectors plus optional Oblivion wrapper classes.
 */

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

html,
body {
  min-height: 100%;
  margin: 0;
  padding: 0;
}

body {
  position: relative;
  background:
    radial-gradient(circle at 12% 0%, rgba(255, 255, 255, calc(0.06 * var(--ob-background-strength))), transparent 44%),
    radial-gradient(circle at 88% 24%, rgba(255, 255, 255, calc(0.04 * var(--ob-background-strength))), transparent 36%),
    linear-gradient(160deg, var(--ob-bg-0), var(--ob-bg-1) 42%, var(--ob-bg-2));
  color: var(--ob-text-1);
  font-family: var(--ob-font-body);
  line-height: 1.55;
  letter-spacing: 0.01em;
  overflow-x: hidden;
  transition:
    background var(--ob-transition-slow) var(--ob-ease-premium),
    color var(--ob-transition-base) var(--ob-ease-premium);
}

body::before,
body::after {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
}

body::before {
  background:
    linear-gradient(to right, transparent 0, transparent 95%, var(--ob-grid-line) 100%),
    linear-gradient(to bottom, transparent 0, transparent 95%, var(--ob-grid-line) 100%);
  background-size: 36px 36px;
  opacity: calc(0.48 * var(--ob-background-strength));
  z-index: -2;
}

body::after {
  background: linear-gradient(to bottom, transparent 0%, rgba(0, 0, 0, 0.46) 100%);
  opacity: calc(0.65 * var(--ob-background-strength));
  z-index: -1;
}

a {
  color: var(--ob-accent);
  text-decoration: none;
  transition: color var(--ob-transition-fast) var(--ob-ease-premium);
}

a:hover,
a:focus-visible {
  color: var(--ob-text-1);
}

img {
  max-width: 100%;
}

#container,
.ob-shell {
  width: var(--ob-layout-width);
  margin: 0 auto;
  padding: 0 var(--ob-space-5) var(--ob-space-7);
  transition: width var(--ob-transition-base) var(--ob-ease-premium);
}

#header {
  position: sticky;
  top: 0;
  z-index: var(--ob-z-header);
  padding-top: var(--ob-space-3);
}

#panel,
.ob-top-nav {
  min-height: var(--ob-header-height);
  margin-bottom: var(--ob-space-5);
  padding: var(--ob-space-3) var(--ob-space-5);
  border: 1px solid var(--ob-card-border);
  border-radius: var(--ob-radius-lg);
  background:
    linear-gradient(135deg, rgba(255, 255, 255, 0.03), transparent 60%),
    var(--ob-surface-1);
  box-shadow: var(--ob-shadow-sm);
  backdrop-filter: blur(var(--ob-backdrop-blur));
  -webkit-backdrop-filter: blur(var(--ob-backdrop-blur));
  transition:
    border-color var(--ob-transition-base) var(--ob-ease-premium),
    box-shadow var(--ob-transition-base) var(--ob-ease-premium),
    background var(--ob-transition-base) var(--ob-ease-premium);
}

#panel .upper,
#panel .lower {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--ob-space-3);
  color: var(--ob-text-2);
}

#logo,
.ob-brand {
  font-family: var(--ob-font-title);
  font-size: clamp(1.2rem, 1.3rem + 0.4vw, 1.8rem);
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--ob-text-1);
}

#obHeaderBanner {
  margin-bottom: var(--ob-space-6);
  padding: clamp(20px, 2vw + 12px, 34px);
  border: 1px solid var(--ob-card-border);
  border-radius: var(--ob-radius-lg);
  background:
    radial-gradient(circle at 12% 50%, rgba(255, 255, 255, 0.09), transparent 38%),
    linear-gradient(120deg, rgba(255, 255, 255, 0.04), transparent 62%),
    var(--ob-surface-2);
  box-shadow: var(--ob-shadow-md);
  overflow: hidden;
}

#obHeaderBanner h1,
#obHeaderBanner h2,
#obHeaderBanner h3 {
  margin: 0;
  font-family: var(--ob-font-title);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--ob-text-1);
}

#obHeaderBanner p {
  margin: var(--ob-space-3) 0 0;
  max-width: 72ch;
  color: var(--ob-text-2);
}

#content,
.ob-content {
  color: var(--ob-text-1);
}

#obLayout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(260px, 320px);
  gap: var(--ob-space-5);
  align-items: start;
}

.ob-main,
.ob-sidebar {
  min-width: 0;
}

body.ob-hide-sidebar #obLayout {
  grid-template-columns: minmax(0, 1fr);
}

.ob-sidebar .ob-widget,
.ob-widget {
  margin-bottom: var(--ob-space-4);
  padding: var(--ob-space-4);
  border: 1px solid var(--ob-card-border);
  border-radius: var(--ob-radius-md);
  background: var(--ob-card-bg-soft);
  box-shadow: var(--ob-shadow-xs);
}

table {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;
}

table.tborder,
.tborder,
.post,
.portal,
.ob-card {
  border: 1px solid var(--ob-card-border);
  border-radius: var(--ob-radius-md);
  background: var(--ob-card-bg);
  box-shadow: var(--ob-shadow-sm);
  overflow: hidden;
}

.thead {
  background:
    linear-gradient(120deg, rgba(255, 255, 255, 0.06), transparent 76%),
    var(--ob-surface-3);
  border-bottom: 1px solid var(--ob-separator);
  color: var(--ob-text-1);
  font-family: var(--ob-font-title);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.thead a {
  color: inherit;
}

.trow1,
.trow2,
.trow_shaded {
  border-top: 1px solid var(--ob-separator);
  background: transparent;
  color: var(--ob-text-2);
}

.trow1:first-child,
.trow2:first-child {
  border-top: 0;
}

.forumdisplay_regular td,
.forumdisplay_sticky td,
.post_body,
.post_content {
  padding: var(--ob-space-4);
}

.tfoot {
  border-top: 1px solid var(--ob-separator);
  background: rgba(255, 255, 255, 0.02);
}

.smalltext,
small {
  color: var(--ob-text-3);
}

h1,
h2,
h3,
h4,
h5,
h6 {
  margin: 0 0 var(--ob-space-3);
  color: var(--ob-text-1);
  font-family: var(--ob-font-title);
  letter-spacing: 0.02em;
}

h1 {
  font-size: clamp(1.5rem, 1.15rem + 1vw, 2.35rem);
}

h2 {
  font-size: clamp(1.25rem, 1rem + 0.8vw, 1.85rem);
}

ul,
ol {
  margin: 0 0 var(--ob-space-4);
  padding-left: 1.2rem;
}

hr {
  border: 0;
  border-top: 1px solid var(--ob-separator);
  margin: var(--ob-space-5) 0;
}

input[type="text"],
input[type="password"],
input[type="email"],
input[type="search"],
input[type="number"],
select,
textarea {
  width: 100%;
  border: 1px solid var(--ob-card-border);
  border-radius: var(--ob-radius-sm);
  background: var(--ob-surface-3);
  color: var(--ob-text-1);
  padding: 10px 12px;
  transition:
    border-color var(--ob-transition-fast) var(--ob-ease-premium),
    box-shadow var(--ob-transition-fast) var(--ob-ease-premium),
    background var(--ob-transition-fast) var(--ob-ease-premium);
}

input:focus-visible,
select:focus-visible,
textarea:focus-visible {
  outline: none;
  border-color: var(--ob-accent);
  box-shadow: 0 0 0 3px var(--ob-focus);
}

button,
input[type="submit"],
input[type="button"],
.button {
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: var(--ob-radius-pill);
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.12), rgba(255, 255, 255, 0)),
    var(--ob-surface-2);
  color: var(--ob-text-1);
  font-family: var(--ob-font-body);
  font-weight: 600;
  letter-spacing: 0.03em;
  padding: 10px 18px;
  cursor: pointer;
  transition:
    transform var(--ob-transition-fast) var(--ob-ease-premium),
    box-shadow var(--ob-transition-fast) var(--ob-ease-premium),
    background var(--ob-transition-fast) var(--ob-ease-premium);
}

button:hover,
input[type="submit"]:hover,
input[type="button"]:hover,
.button:hover {
  transform: translateY(-1px);
  box-shadow: var(--ob-shadow-xs);
}

button:active,
input[type="submit"]:active,
input[type="button"]:active,
.button:active {
  transform: translateY(0);
}

blockquote {
  margin: 0 0 var(--ob-space-4);
  padding: var(--ob-space-4);
  border-left: 3px solid var(--ob-accent);
  border-radius: var(--ob-radius-sm);
  background: var(--ob-accent-ghost);
}

.clear {
  clear: both;
}