/* xetaiduoi1tan — giao diện trắng, tối giản */

:root {
  --bg: #f8fafc;
  --paper: rgba(255, 255, 255, 0.72);
  --text: #0f172a;
  --muted: #475569;
  --line: rgba(226, 232, 240, 0.8);
  --accent: #2563eb;
  --accent-hover: #1d4ed8;
  --accent-light: rgba(37, 99, 235, 0.08);
  --radius: 16px;
  --max: 40rem;
  --max-wide: 48rem;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: "Be Vietnam Pro", system-ui, -apple-system, sans-serif;
  font-size: 1.05rem;
  line-height: 1.65;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  position: relative;
  overflow-x: hidden;
}

body::before,
body::after {
  content: "";
  position: absolute;
  width: 60vw;
  height: 60vw;
  max-width: 800px;
  max-height: 800px;
  border-radius: 50%;
  z-index: -1;
  filter: blur(100px);
  opacity: 0.35;
  pointer-events: none;
}
body::before {
  top: -15%;
  left: -15%;
  background: #3b82f6; /* Blue */
}
body::after {
  top: 30%;
  right: -15%;
  background: #14b8a6; /* Teal */
}

body.nav-open {
  overflow: hidden;
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  z-index: 1000;
  padding: 0.6rem 1rem;
  background: var(--accent);
  color: #fff;
  font-weight: 600;
  font-size: 0.9rem;
  border-radius: var(--radius);
  text-decoration: none;
}

.skip-link:focus {
  left: 1rem;
  top: 1rem;
  outline: 2px solid var(--text);
  outline-offset: 2px;
}

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

a:hover {
  color: var(--accent-hover);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.inner {
  width: min(100% - 2rem, var(--max-wide));
  margin-inline: auto;
}

.inner--narrow {
  width: min(100% - 2rem, var(--max));
}

/* Header */
.site-header {
  border-bottom: 1px solid var(--line);
  background: rgba(248, 250, 252, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  position: sticky;
  top: 0;
  z-index: 100;
}

.site-header__inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.65rem 1rem;
  padding: 1rem 0;
}

.brand-wrap {
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
  min-width: 0;
  flex: 1 1 auto;
}

.brand-tag {
  margin: 0;
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--muted);
  line-height: 1.3;
  max-width: 18rem;
}

.nav-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.45rem 0.85rem;
  font-family: inherit;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text);
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  cursor: pointer;
  flex: 0 0 auto;
}

.nav-toggle:hover {
  border-color: #cbd5e1;
}

.nav-panel {
  display: none;
  width: 100%;
  flex-basis: 100%;
  padding-bottom: 0.35rem;
}

.nav-panel.is-open {
  display: block;
}

@media (min-width: 768px) {
  .site-header__inner {
    flex-wrap: nowrap;
    padding-top: 0.85rem;
    padding-bottom: 0.85rem;
  }

  .brand-wrap {
    flex: 0 0 auto;
    order: 1;
  }

  .nav-toggle {
    display: none;
  }

  .nav-panel {
    display: flex !important;
    width: auto;
    flex: 1 1 auto;
    flex-basis: auto;
    order: 2;
    justify-content: center;
    padding: 0;
  }

  .header-cta {
    order: 3;
    margin-left: 0;
  }
}

.brand {
  font-weight: 700;
  font-size: 1.05rem;
  color: var(--text);
  text-decoration: none;
}

.brand:hover {
  color: var(--accent);
  text-decoration: none;
}

.brand span {
  color: var(--muted);
  font-weight: 600;
}

.nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1.25rem;
  flex: 1;
  justify-content: flex-start;
}

@media (max-width: 767px) {
  .nav-panel .nav {
    flex-direction: column;
    gap: 0;
    padding: 0.25rem 0 0.5rem;
  }

  .nav-panel .nav a {
    padding: 0.65rem 0;
    border-bottom: 1px solid var(--line);
    font-size: 1rem;
  }

  .nav-panel .nav a:last-child {
    border-bottom: 0;
  }
}

@media (min-width: 640px) {
  .nav {
    justify-content: center;
  }
}

.nav a {
  color: var(--muted);
  font-size: 0.95rem;
  font-weight: 500;
  text-decoration: none;
}

.nav a:hover {
  color: var(--text);
  text-decoration: none;
}

.nav a[aria-current="page"] {
  color: var(--text);
  font-weight: 600;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.55rem 1rem;
  font-family: inherit;
  font-size: 0.95rem;
  font-weight: 600;
  border-radius: 999px;
  border: 1px solid transparent;
  cursor: pointer;
  text-decoration: none;
}

.btn:hover {
  text-decoration: none;
}

.btn--solid {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}

.btn--solid:hover {
  background: var(--accent-hover);
  border-color: var(--accent-hover);
  color: #fff;
}

.btn--line {
  background: #fff;
  border-color: var(--line);
  color: var(--text);
}

.btn--line:hover {
  border-color: #cbd5e1;
  color: var(--text);
}

.btn--sm {
  padding: 0.4rem 0.85rem;
  font-size: 0.875rem;
}

.header-cta {
  margin-left: auto;
}

@media (min-width: 768px) {
  .header-cta {
    margin-left: 0;
  }
}

/* Main blocks */
.hero {
  padding: 3.5rem 0 3rem;
}

.hero h1 {
  margin: 0 0 1rem;
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 800;
  line-height: 1.2;
  letter-spacing: -0.03em;
  background: linear-gradient(135deg, #1e40af 0%, #3b82f6 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.lead {
  margin: 0 0 1.5rem;
  color: var(--muted);
  font-size: 1.05rem;
}

.hero__kicker {
  margin: 0 0 0.5rem;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--accent);
}

.landing-features {
  display: grid;
  gap: 1.25rem;
  margin: 1rem 0 2.5rem;
}

@media (min-width: 640px) {
  .landing-features {
    grid-template-columns: repeat(3, 1fr);
    gap: 1.25rem;
  }
}

.feature-card {
  padding: 1.5rem 1.4rem;
  border-radius: var(--radius);
  border: 1px solid rgba(255,255,255,0.6);
  background: var(--paper);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  box-shadow: 0 2px 12px rgba(0,0,0,0.03);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.feature-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 24px rgba(37, 99, 235, 0.08);
}

.feature-card h3 {
  margin: 0 0 0.5rem;
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text);
}

.feature-card p {
  margin: 0;
  font-size: 0.9rem;
  color: var(--muted);
  line-height: 1.6;
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
  margin: 0 0 2rem;
}

.section {
  padding: 3rem 0;
  border-top: 1px solid var(--line);
}

.section h2 {
  margin: 0 0 1rem;
  font-size: 1.35rem;
  font-weight: 800;
  letter-spacing: -0.02em;
}

.section p {
  margin: 0 0 0.75rem;
  color: var(--muted);
}

.section p:last-child {
  margin-bottom: 0;
}

.box {
  padding: 1.5rem 1.75rem;
  border-radius: var(--radius);
  background: var(--paper);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid rgba(255, 255, 255, 0.6);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.03);
  transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.box:hover {
  transform: translateY(-6px);
  box-shadow: 0 12px 30px rgba(37, 99, 235, 0.08);
  border-color: rgba(59, 130, 246, 0.3);
}

.notice {
  margin-top: 1rem;
  padding: 1rem 1.1rem;
  border-radius: var(--radius);
  border: 1px solid #fde68a;
  background: #fffbeb;
  color: #78350f;
  font-size: 0.95rem;
}

.notice strong {
  color: #451a03;
}

/* Footer */
.site-footer {
  margin-top: 2rem;
  padding: 1.75rem 0 2.5rem;
  border-top: 1px solid var(--line);
  font-size: 0.9rem;
  color: var(--muted);
}

.site-footer a {
  color: var(--muted);
}

.site-footer a:hover {
  color: var(--accent);
}

.footer-grid {
  display: grid;
  gap: 1.5rem;
  margin-bottom: 1.5rem;
}

@media (min-width: 640px) {
  .footer-grid {
    grid-template-columns: 1.4fr 1fr 1fr;
    gap: 2rem;
  }
}

.footer-title {
  margin: 0 0 0.6rem;
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text);
}

.footer-list {
  margin: 0;
  padding: 0;
  list-style: none;
}

.footer-list li + li {
  margin-top: 0.45rem;
}

.footer-list a {
  font-size: 0.9rem;
}

.footer-brand {
  margin: 0 0 0.5rem;
  font-size: 1rem;
  color: var(--text);
}

.footer-desc {
  margin: 0;
  font-size: 0.88rem;
  line-height: 1.55;
  max-width: 22rem;
}

.footer-legal {
  padding-top: 1.25rem;
  border-top: 1px solid var(--line);
  font-size: 0.82rem;
  line-height: 1.5;
  color: var(--muted);
}

.footer-legal p {
  margin: 0;
}

/* Breadcrumb */
.breadcrumb {
  font-size: 0.875rem;
  color: var(--muted);
  padding: 1.25rem 0 0;
}

.breadcrumb a {
  color: var(--muted);
}

.breadcrumb a:hover {
  color: var(--accent);
}

.breadcrumb-current {
  color: var(--text);
}

/* Article */
.page-main {
  padding-bottom: 2.5rem;
}

.article-head {
  padding: 0.5rem 0 1.25rem;
  border-bottom: 1px solid var(--line);
  margin-bottom: 1.5rem;
}

.article-head h1 {
  margin: 0 0 0.5rem;
  font-size: clamp(1.35rem, 3.2vw, 1.75rem);
  line-height: 1.25;
  font-weight: 700;
}

.meta {
  margin: 0;
  font-size: 0.9rem;
  color: var(--muted);
}

.prose {
  max-width: var(--max);
}

.prose > * + * {
  margin-top: 1rem;
}

.prose h2 {
  margin: 2rem 0 0.5rem;
  font-size: 1.1rem;
  font-weight: 700;
}

.prose h2:first-of-type {
  margin-top: 1.25rem;
}

.prose p,
.prose li {
  color: var(--muted);
}

.prose ul {
  padding-left: 1.2rem;
}

.prose li + li {
  margin-top: 0.35rem;
}

.lede {
  font-size: 1.05rem;
  color: var(--text);
}

.faq {
  margin-top: 2rem;
  padding: 1.25rem;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  background: var(--paper);
}

.faq h2 {
  margin: 0 0 1rem;
  font-size: 1.05rem;
}

.faq dl {
  margin: 0;
}

.faq dt {
  font-weight: 600;
  color: var(--text);
  margin-top: 0.9rem;
  font-size: 0.95rem;
}

.faq dt:first-child {
  margin-top: 0;
}

.faq dd {
  margin: 0.35rem 0 0;
  color: var(--muted);
  font-size: 0.95rem;
}

.source {
  margin-top: 2rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--line);
  font-size: 0.95rem;
  color: var(--muted);
}

/* Article images */
.article-img {
  margin: 1.5rem 0;
  padding: 0;
}

.article-img img {
  width: 100%;
  height: auto;
  border-radius: var(--radius);
  display: block;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.08);
  transition: transform 0.4s ease;
}

.article-img img:hover {
  transform: scale(1.02);
}

.article-img figcaption {
  margin-top: 0.6rem;
  font-size: 0.85rem;
  color: var(--muted);
  text-align: center;
  font-style: italic;
}

.table-wrap {
  overflow-x: auto;
  margin: 1rem 0;
  -webkit-overflow-scrolling: touch;
}

.data-table {
  width: 100%;
  min-width: 280px;
  border-collapse: collapse;
  font-size: 0.95rem;
}

.data-table th,
.data-table td {
  border: 1px solid var(--line);
  padding: 0.65rem 0.85rem;
  text-align: left;
  vertical-align: top;
}

.data-table th {
  background: var(--paper);
  font-weight: 600;
  color: var(--text);
}

.data-table td {
  color: var(--muted);
}

/* Listing / contact */
.page-title {
  margin: 0 0 0.5rem;
  font-size: 1.5rem;
  font-weight: 700;
}

.sub {
  margin: 0 0 1.5rem;
  color: var(--muted);
  max-width: var(--max);
}

.card-list {
  list-style: none;
  margin: 0 0 1.5rem;
  padding: 0;
}

.card-list li {
  padding: 1.25rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  margin-bottom: 0.75rem;
  background: var(--bg);
}

.card-list h2 {
  margin: 0 0 0.35rem;
  font-size: 1.05rem;
  font-weight: 600;
}

.card-list p {
  margin: 0;
  font-size: 0.95rem;
  color: var(--muted);
}

/* Vehicle cards — roadmap Prompt 3 */
.vehicle-grid {
  list-style: none;
  margin: 0 0 2rem;
  padding: 0;
  display: grid;
  gap: 1rem;
}

@media (min-width: 640px) {
  .vehicle-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

.vehicle-card {
  display: flex;
  flex-direction: column;
  height: 100%;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--bg);
  overflow: hidden;
}

.vehicle-card__media {
  aspect-ratio: 16 / 10;
  background: linear-gradient(145deg, #f1f5f9 0%, #e2e8f0 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.75rem;
  font-weight: 700;
  color: #64748b;
  letter-spacing: -0.03em;
}

.vehicle-card__body {
  padding: 1.15rem 1.25rem 1.25rem;
  display: flex;
  flex-direction: column;
  flex: 1;
  gap: 0.5rem;
}

.vehicle-card__title {
  margin: 0;
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text);
}

.vehicle-card__meta {
  margin: 0;
  font-size: 0.85rem;
  color: var(--muted);
}

.vehicle-card__price {
  margin: 0;
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--accent);
}

.vehicle-card__specs {
  margin: 0;
  padding: 0;
  list-style: none;
  font-size: 0.88rem;
  color: var(--muted);
  flex: 1;
}

.vehicle-card__specs li + li {
  margin-top: 0.3rem;
}

.vehicle-card__specs li {
  padding-left: 0.85rem;
  position: relative;
}

.vehicle-card__specs li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.55em;
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--accent);
}

.vehicle-card .btn {
  align-self: flex-start;
  margin-top: 0.35rem;
}

/* Comparison table — roadmap Prompt 4 */
.compare-table-wrap {
  margin: 1.5rem 0 2rem;
}

table.compare-table {
  width: 100%;
  min-width: 300px;
  border-collapse: collapse;
  font-size: 0.92rem;
}

.compare-table caption {
  caption-side: top;
  text-align: left;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 0.65rem;
  font-size: 1rem;
}

.compare-table th,
.compare-table td {
  border: 1px solid var(--line);
  padding: 0.6rem 0.75rem;
}

/* Animations & Mobile Optimizations */
.fade-in {
  animation: fadeIn 0.6s ease-out forwards;
  opacity: 0;
}

.slide-up {
  animation: slideUp 0.6s ease-out forwards;
  opacity: 0;
  transform: translateY(20px);
}

@keyframes fadeIn {
  to { opacity: 1; }
}

@keyframes slideUp {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.feature-card, .vehicle-card, .box {
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.feature-card:hover, .vehicle-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
}

.btn {
  transition: all 0.2s ease;
}

.btn:active {
  transform: scale(0.96);
}

/* Better mobile inputs */
input[type="number"], select {
  -webkit-appearance: none;
  -moz-appearance: none;
  appearance: none;
}

  vertical-align: top;
  text-align: left;
}

.compare-table thead th {
  background: var(--paper);
  font-weight: 600;
  color: var(--text);
}

.compare-table .col-van {
  background: #eff6ff;
}

.compare-table .col-truck {
  background: #fffbeb;
}

.compare-table tbody td:first-child {
  font-weight: 600;
  color: var(--text);
  background: var(--bg);
}

/* CTA band — roadmap Prompt 5 */
.cta-band {
  margin: 0;
  padding: 3rem 0;
  background: linear-gradient(135deg, #1e3a5f 0%, #1e40af 50%, #2563eb 100%);
  border: none;
  position: relative;
  overflow: hidden;
}

.cta-band::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 400px;
  height: 400px;
  background: rgba(255, 255, 255, 0.05);
  border-radius: 50%;
  pointer-events: none;
}

.cta-band::after {
  content: '';
  position: absolute;
  bottom: -30%;
  left: -10%;
  width: 300px;
  height: 300px;
  background: rgba(255, 255, 255, 0.03);
  border-radius: 50%;
  pointer-events: none;
}

.cta-band__inner {
  width: min(100% - 2rem, var(--max));
  margin-inline: auto;
  text-align: center;
}

.cta-band__title {
  margin: 0 0 0.6rem;
  font-size: 1.4rem;
  font-weight: 800;
  color: #ffffff;
  letter-spacing: -0.01em;
}

.cta-band__text {
  margin: 0 auto 1.5rem;
  color: rgba(255, 255, 255, 0.85);
  font-size: 1.05rem;
  max-width: 32rem;
  line-height: 1.6;
}

.cta-band .actions {
  margin: 0;
  justify-content: center;
}

/* Blog article helpers — roadmap Prompt 6 */
.post-related {
  margin-top: 2.5rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--line);
}

.post-related h2 {
  margin: 0 0 0.75rem;
  font-size: 1rem;
  font-weight: 700;
  color: var(--text);
}

.post-related ul {
  margin: 0;
  padding-left: 1.2rem;
  color: var(--muted);
  font-size: 0.95rem;
}

.post-related li + li {
  margin-top: 0.35rem;
}

.grid-2 {
  display: grid;
  gap: 1rem;
}

@media (min-width: 640px) {
  .grid-2 {
    grid-template-columns: 1fr 1fr;
  }
}

.panel {
  padding: 1.25rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--paper);
}

.panel h2 {
  margin: 0 0 0.75rem;
  font-size: 1rem;
  font-weight: 600;
}

.panel p {
  margin: 0 0 1rem;
  font-size: 0.95rem;
  color: var(--muted);
}

.contact-list {
  margin: 0;
  padding: 0;
  list-style: none;
}

.contact-list li + li {
  margin-top: 0.5rem;
}

/* Form styles */
.form-group {
  margin-bottom: 1.25rem;
}

.form-row {
  display: flex;
  flex-direction: column;
  gap: 0;
}

@media (min-width: 640px) {
  .form-row {
    flex-direction: row;
    gap: 1.25rem;
  }
  .form-row .form-group {
    flex: 1;
    margin-bottom: 1.5rem;
  }
}

.form-label {
  display: block;
  font-weight: 600;
  margin-bottom: 0.5rem;
  color: var(--text);
  font-size: 0.95rem;
}

.form-control {
  width: 100%;
  padding: 0.75rem 1rem;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  font-family: inherit;
  font-size: 1rem;
  color: var(--text);
  background: var(--bg);
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.form-control:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(29, 78, 216, 0.1);
}

select.form-control {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 24 24' stroke='%236b7280'%3E%3Cpath stroke-linecap='round' stroke-linejoin='round' stroke-width='2' d='M19 9l-7 7-7-7'%3E%3C/path%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 1rem center;
  background-size: 1.2rem;
  padding-right: 2.5rem;
}

.result-card {
  display: none;
  margin-top: 2rem;
  padding: 1.5rem;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  background: var(--bg);
  transition: opacity 0.3s ease;
}

.result-banned {
  background-color: #fef2f2;
  border-color: #fca5a5;
}

.result-allowed {
  background-color: #f0fdf4;
  border-color: #86efac;
}

.result-card__title {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin: 0 0 0.75rem;
  font-size: 1.15rem;
}

.result-card__title.banned {
  color: #b91c1c;
}

.result-card__title.allowed {
  color: #15803d;
}

.result-card__message {
  margin: 0;
  color: var(--text);
  line-height: 1.6;
  font-size: 1.05rem;
}

/* Premium Tool UI */
.glass-card {
  background: rgba(255, 255, 255, 0.7);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-radius: 20px;
  padding: 2.5rem;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.05), 0 1px 3px rgba(0,0,0,0.03);
  margin: 0 auto 3rem;
  border: 1px solid rgba(255, 255, 255, 0.6);
  max-width: 800px;
  position: relative;
  overflow: hidden;
}
@media (max-width: 639px) {
  .glass-card {
    padding: 1.5rem;
  }
}
.glass-card::before {
  content: "";
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 6px;
  background: linear-gradient(90deg, #1d4ed8, #3b82f6, #93c5fd);
}

.premium-input {
  background: #f8fafc;
  border: 2px solid transparent;
  border-radius: 12px;
  padding: 1rem 1.25rem;
  font-size: 1.05rem;
  width: 100%;
  color: #1e293b;
  transition: all 0.3s ease;
  font-family: inherit;
}
.premium-input:focus {
  background: #ffffff;
  border-color: #3b82f6;
  box-shadow: 0 0 0 4px rgba(59, 130, 246, 0.15);
  outline: none;
}
.premium-label {
  display: block;
  font-weight: 700;
  color: #334155;
  margin-bottom: 0.6rem;
  font-size: 0.95rem;
  letter-spacing: 0.02em;
}
.btn-premium {
  background: linear-gradient(135deg, #1d4ed8 0%, #2563eb 100%);
  color: #ffffff;
  border: none;
  border-radius: 12px;
  padding: 1.1rem 2rem;
  font-size: 1.1rem;
  font-weight: 700;
  cursor: pointer;
  width: 100%;
  transition: transform 0.2s, box-shadow 0.2s, filter 0.2s;
  box-shadow: 0 4px 14px rgba(37, 99, 235, 0.3);
  text-align: center;
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 0.5rem;
  font-family: inherit;
}
.btn-premium:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(37, 99, 235, 0.4);
  filter: brightness(1.05);
}
.btn-premium:active {
  transform: translateY(0);
}

.form-grid {
  display: grid;
  gap: 1.5rem;
  margin-bottom: 2rem;
}
@media (min-width: 640px) {
  .form-grid {
    grid-template-columns: 1fr 1fr;
  }
}

.result-premium {
  display: none;
  margin-top: 2.5rem;
  border-radius: 16px;
  padding: 1.5rem 2rem;
  animation: slideDown 0.4s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}
@keyframes slideDown {
  from { opacity: 0; transform: translateY(-10px) scale(0.98); }
  to { opacity: 1; transform: translateY(0) scale(1); }
}
@media (max-width: 639px) {
  .result-premium {
    padding: 1.25rem;
  }
}

.result-premium.banned {
  background: linear-gradient(to right, #fef2f2, #fff1f2);
  border-left: 6px solid #ef4444;
  box-shadow: 0 10px 25px rgba(239, 68, 68, 0.1);
}
.result-premium.allowed {
  background: linear-gradient(to right, #f0fdf4, #ecfdf5);
  border-left: 6px solid #10b981;
  box-shadow: 0 10px 25px rgba(16, 185, 129, 0.1);
}

.result-title {
  font-size: 1.35rem;
  font-weight: 800;
  margin-bottom: 0.75rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}
.result-title.banned { color: #b91c1c; }
.result-title.allowed { color: #047857; }

.result-message {
  font-size: 1.1rem;
  line-height: 1.6;
  color: #1e293b;
  margin: 0;
}
.result-message strong {
  font-weight: 700;
}

.premium-notice {
  margin-top: 1.5rem;
  font-size: 0.9rem;
  color: #64748b;
  display: flex;
  gap: 0.75rem;
  align-items: flex-start;
  background: #ffffff;
  padding: 1rem;
  border-radius: 8px;
  border: 1px solid #e2e8f0;
}