/*
Theme Name: Mr Luan Digital Lab
Author: Huynh Minh Luan
Description: Block theme/FSE WordPress lấy cảm hứng từ nhận diện Mr Luan: dark-tech, xanh điện tử, học thuật, nghiên cứu và đổi mới.
Requires at least: 6.6
Tested up to: 7.0
Requires PHP: 7.4
Version: 1.0.3
License: GNU General Public License v2 or later
License URI: https://www.gnu.org/licenses/gpl-2.0.html
Text Domain: mrluan-digital-lab
Tags: block-patterns, full-site-editing, custom-colors, custom-logo, editor-style, blog, portfolio, education
*/

:root {
  --mrluan-blue: #006EFA;
  --mrluan-dark: #0B0F17;
  --mrluan-navy: #111D2B;
  --mrluan-slate: #64748B;
  --mrluan-blue-on-dark: #4DA3FF;
  --mrluan-slate-on-dark: #A7B4C8;
  --mrluan-light: #E2E8F0;
  --mrluan-white: #FFFFFF;
  --mrluan-radius: 18px;
  --mrluan-shadow: 0 24px 70px rgba(0, 110, 250, 0.18);
}

html { scroll-behavior: smooth; }
body { overflow-x: hidden; }
a { text-underline-offset: 0.18em; }

.wp-site-blocks { min-height: 100vh; }

/* Header */
.mrluan-site-header {
  position: sticky;
  top: 0;
  z-index: 30;
  -webkit-backdrop-filter: blur(18px);
  backdrop-filter: blur(18px);
  border-bottom: 1px solid rgba(255,255,255,0.08);
}
.admin-bar .mrluan-site-header { top: 32px; }
.mrluan-header-inner {
  min-height: 78px;
}
.mrluan-site-header .wp-block-site-title a,
.mrluan-brand-link {
  text-decoration: none;
  letter-spacing: -0.04em;
  font-weight: 800;
  color: var(--mrluan-light);
}
.mrluan-site-header .wp-block-site-title a::first-letter { color: var(--mrluan-blue); }
.mrluan-site-header .wp-block-navigation a {
  font-weight: 700;
  letter-spacing: -0.01em;
  opacity: .92;
}
.mrluan-site-header .wp-block-navigation a:hover { color: var(--mrluan-blue) !important; }
.mrluan-pill-button .wp-block-button__link,
.wp-block-button.is-style-mrluan-outline .wp-block-button__link,
.wp-block-button.is-style-mrluan-glow .wp-block-button__link {
  border-radius: 999px;
  font-weight: 800;
}
.wp-block-button.is-style-mrluan-glow .wp-block-button__link,
.mrluan-pill-button .wp-block-button__link {
  box-shadow: 0 14px 36px rgba(0, 110, 250, 0.32);
}
.wp-block-button.is-style-mrluan-outline .wp-block-button__link {
  background: transparent !important;
  color: var(--mrluan-white) !important;
  border: 1px solid rgba(226, 232, 240, 0.42);
}
.wp-block-button.is-style-mrluan-outline .wp-block-button__link:hover {
  border-color: var(--mrluan-blue);
  color: var(--mrluan-blue) !important;
}


.mrluan-brand-link {
  display: inline-flex;
  align-items: center;
  font-size: clamp(1.7rem, 3vw, 2.45rem);
  line-height: 1;
  letter-spacing: -0.08em;
  font-weight: 800;
}


.mrluan-brand-title a {
  color: var(--mrluan-light);
  text-decoration: none;
}
.mrluan-brand-title a::first-letter {
  color: var(--mrluan-blue-on-dark);
}

/* Logo helpers */
.mrluan-logo-wordmark {
  display: inline-flex;
  align-items: center;
  gap: .12em;
  font-size: clamp(2rem, 5vw, 5rem);
  font-weight: 800;
  line-height: .9;
  letter-spacing: -.08em;
  text-decoration: none;
}
.mrluan-logo-wordmark .mr { color: #64748B; }
.mrluan-logo-wordmark .luan { color: var(--mrluan-blue); }
.mrluan-logo-wordmark.small { font-size: clamp(1.65rem, 3vw, 2.75rem); }
.mrluan-tagline {
  letter-spacing: .48em;
  text-transform: uppercase;
  font-weight: 700;
  font-size: clamp(.68rem, 1.3vw, .92rem);
}

/* Hero */
.mrluan-hero {
  position: relative;
  overflow: hidden;
  isolation: isolate;
  background:
    radial-gradient(circle at 66% 72%, rgba(0, 110, 250, .34), transparent 22rem),
    radial-gradient(circle at 84% 18%, rgba(0, 110, 250, .15), transparent 18rem),
    linear-gradient(135deg, #0B0F17 0%, #07111E 58%, #03070D 100%);
}
.mrluan-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.035) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: radial-gradient(circle at 60% 65%, #000 0 38%, transparent 72%);
  z-index: -2;
}
.mrluan-hero::after {
  content: "";
  position: absolute;
  right: -11rem;
  top: 9rem;
  width: 42rem;
  height: 42rem;
  border: 1px solid rgba(0, 110, 250, .25);
  border-radius: 50%;
  box-shadow: inset 0 0 80px rgba(0, 110, 250, .08);
  z-index: -1;
}
.mrluan-kicker {
  display: inline-flex;
  align-items: center;
  gap: .55rem;
  font-size: .78rem;
  font-weight: 800;
  letter-spacing: .22em;
  text-transform: uppercase;
}
.mrluan-kicker::before {
  content: "";
  width: 30px;
  height: 2px;
  background: var(--mrluan-blue);
  border-radius: 999px;
}
.mrluan-hero-title strong,
.mrluan-blue-text { color: var(--mrluan-blue); }
.mrluan-hero-copy { max-width: 640px; }
.mrluan-hero-device {
  position: relative;
  min-height: 460px;
}
.mrluan-circuit-stage {
  position: relative;
  display: grid;
  place-items: center;
  min-height: 460px;
}
.mrluan-circuit-stage::before {
  content: "";
  position: absolute;
  width: min(72vw, 520px);
  height: min(72vw, 520px);
  border-radius: 50%;
  background: radial-gradient(circle, rgba(0,110,250,.28), transparent 64%);
  filter: blur(8px);
}
.mrluan-circuit-stage::after {
  content: "";
  position: absolute;
  bottom: 3rem;
  width: min(70vw, 520px);
  height: 72px;
  border-radius: 50%;
  background: radial-gradient(ellipse, rgba(0,110,250,.62), rgba(0,110,250,.12) 52%, transparent 72%);
  filter: blur(3px);
}
.mrluan-circuit-stage img {
  position: relative;
  z-index: 2;
  width: min(44vw, 360px);
  filter: drop-shadow(0 0 28px rgba(0, 110, 250, .75));
}
.mrluan-service-strip {
  border-top: 1px solid rgba(255,255,255,.08);
}
.mrluan-service-card {
  border: 1px solid rgba(255,255,255,.08);
  border-radius: 18px;
  background: linear-gradient(180deg, rgba(255,255,255,.045), rgba(255,255,255,.018));
  transition: transform .18s ease, border-color .18s ease, background .18s ease;
}
.mrluan-service-card:hover {
  transform: translateY(-4px);
  border-color: rgba(0,110,250,.48);
  background: linear-gradient(180deg, rgba(0,110,250,.12), rgba(255,255,255,.018));
}

/* Sections */
.mrluan-light-panel {
  background:
    radial-gradient(circle at 82% 20%, rgba(0,110,250,.08), transparent 22rem),
    linear-gradient(180deg, #FFFFFF, #F8FAFC);
}
.mrluan-section-title {
  letter-spacing: -0.045em;
}
.mrluan-author-frame {
  position: relative;
  display: inline-grid;
  place-items: center;
  width: min(100%, 370px);
  aspect-ratio: 1 / 1;
  border: 2px solid rgba(11, 15, 23, .88);
  border-radius: 50%;
  background: #F8FAFC;
  overflow: hidden;
}
.mrluan-author-frame img {
  width: 86%;
  height: 86%;
  object-fit: contain;
}
.mrluan-author-badge {
  position: absolute;
  right: 5%;
  bottom: 8%;
  width: 84px;
  height: 84px;
  display: grid;
  place-items: center;
  border-radius: 24px;
  background: #07111E;
  box-shadow: var(--mrluan-shadow);
}
.mrluan-author-badge img { width: 58px; height: 58px; }

.mrluan-dark-section {
  background:
    radial-gradient(circle at 88% 0%, rgba(0,110,250,.18), transparent 22rem),
    linear-gradient(180deg, #07111E, #0B0F17);
  color: var(--mrluan-white);
}
.mrluan-post-grid .wp-block-post-template {
  gap: 24px;
}
.mrluan-post-card,
.mrluan-post-grid .wp-block-post {
  border: 1px solid rgba(226,232,240,.12);
  border-radius: 18px;
  background: rgba(255,255,255,.035);
  overflow: hidden;
  transition: transform .18s ease, border-color .18s ease, box-shadow .18s ease;
}
.mrluan-post-grid .wp-block-post:hover,
.mrluan-post-card:hover {
  transform: translateY(-5px);
  border-color: rgba(0,110,250,.55);
  box-shadow: 0 22px 58px rgba(0,0,0,.34);
}
.mrluan-post-grid .wp-block-post-featured-image img {
  aspect-ratio: 16 / 9;
  object-fit: cover;
}
.mrluan-post-grid .wp-block-post-title a { text-decoration: none; }
.mrluan-post-grid .wp-block-post-date { color: rgba(226,232,240,.72); }

/* Newsletter */
.mrluan-newsletter {
  border-top: 1px solid rgba(226,232,240,.1);
}
.mrluan-newsletter-form {
  display: flex;
  gap: 12px;
  width: min(100%, 560px);
}
.mrluan-newsletter-form input {
  flex: 1;
  min-width: 0;
  border: 1px solid rgba(226,232,240,.16);
  border-radius: 999px;
  background: rgba(255,255,255,.08);
  color: #fff;
  padding: 15px 20px;
  font: inherit;
}
.mrluan-newsletter-form input::placeholder { color: rgba(226,232,240,.7); }
.mrluan-newsletter-form button {
  border: 0;
  border-radius: 999px;
  background: var(--mrluan-blue-on-dark);
  color: #06101D;
  padding: 15px 24px;
  font: inherit;
  font-weight: 800;
  cursor: not-allowed;
}
.mrluan-newsletter-form button[disabled] {
  opacity: .86;
}

/* Blog/content */
.mrluan-content-card {
  border: 1px solid rgba(15,23,42,.08);
  border-radius: 22px;
  box-shadow: 0 18px 50px rgba(15,23,42,.06);
}
.wp-block-post-content :where(p, li) { font-size: 1.06rem; }
.wp-block-post-content :where(h2,h3,h4) { margin-top: 1.6em; }
.wp-block-post-content a { color: var(--mrluan-blue); }
.wp-block-post-content img { border-radius: 18px; }

/* Footer */
.mrluan-footer {
  border-top: 1px solid rgba(226,232,240,.1);
  background: #07111E;
}
.mrluan-footer a { color: inherit; text-decoration: none; }
.mrluan-footer a:hover { color: var(--mrluan-blue-on-dark); }
.mrluan-footer-nav { gap: .55rem; }
.mrluan-footer-nav .wp-block-navigation-item__content { padding: 0; }

@media (max-width: 980px) {
  .mrluan-hero-device, .mrluan-circuit-stage { min-height: 340px; }
  .mrluan-circuit-stage img { width: min(58vw, 260px); }
}

@media (max-width: 782px) {
  .admin-bar .mrluan-site-header { top: 46px; }
  .mrluan-header-inner { min-height: 68px; }
  .mrluan-newsletter-form { flex-direction: column; }
  .mrluan-newsletter-form button { width: 100%; }
}

@media (max-width: 600px) {
  .mrluan-hero { padding-top: 24px !important; }
  .mrluan-author-badge { width: 64px; height: 64px; border-radius: 18px; }
  .mrluan-author-badge img { width: 44px; height: 44px; }
}


/* Accessibility & compatibility refinements */
.mrluan-skip-link {
  position: fixed;
  left: 1rem;
  top: -999px;
  z-index: 9999;
  padding: .7rem 1rem;
  border-radius: 999px;
  background: #FFFFFF;
  color: #0B0F17;
  font-weight: 800;
  text-decoration: none;
  box-shadow: 0 10px 30px rgba(0,0,0,.25);
}
.mrluan-skip-link:focus,
.mrluan-skip-link:focus-visible { top: 1rem; }
.admin-bar .mrluan-skip-link:focus,
.admin-bar .mrluan-skip-link:focus-visible { top: calc(32px + 1rem); }
.screen-reader-text {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}
.mrluan-hero::before { -webkit-mask-image: radial-gradient(circle at 60% 65%, #000 0 38%, transparent 72%); }
.mrluan-hero .has-mrluan-slate-color,
.mrluan-dark-section .has-mrluan-slate-color,
.mrluan-footer .has-mrluan-slate-color { color: var(--mrluan-slate-on-dark) !important; }
.mrluan-hero .has-mrluan-blue-color,
.mrluan-dark-section .has-mrluan-blue-color,
.mrluan-site-header .wp-block-navigation a:hover { color: var(--mrluan-blue-on-dark) !important; }
.mrluan-footer .has-mrluan-blue-color,
.mrluan-footer a:hover { color: var(--mrluan-blue-on-dark) !important; }
.mrluan-post-grid .wp-block-post-excerpt__more-link { font-weight: 800; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .01ms !important;
  }
}


/* Keyboard focus and responsive navigation */
:where(a, button, input, textarea, select, summary, .wp-block-navigation__responsive-container-open, .wp-block-navigation__responsive-container-close):focus-visible {
  outline: 3px solid var(--mrluan-blue-on-dark);
  outline-offset: 3px;
  border-radius: 8px;
}
.mrluan-light-panel :where(a, button, input, textarea, select, summary):focus-visible,
.wp-block-post-content :where(a, button, input, textarea, select, summary):focus-visible {
  outline-color: var(--mrluan-blue);
}
.wp-block-navigation__responsive-container.is-menu-open {
  padding: 1.25rem;
}
.wp-block-navigation__responsive-container.is-menu-open .wp-block-navigation__responsive-container-content {
  align-items: flex-start;
  gap: 1rem;
}
@media (max-width: 600px) {
  .mrluan-site-header .mrluan-pill-button { display: none; }
}