/* ═══════════════════════════════════════════════════════════════════
   Non Resident UK — Main Stylesheet
   GOV.UK Design System + Premium Modern Overlay
═══════════════════════════════════════════════════════════════════ */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&display=swap');

/* ── CSS Variables ─────────────────────────────────────────────── */
:root {
  --govuk-black:      #0b0c0c;
  --govuk-blue:       #1d70b8;
  --govuk-blue-dark:  #003078;
  --govuk-blue-hover: #1459a8;
  --govuk-green:      #00703c;
  --govuk-green-dark: #005a30;
  --govuk-red:        #d4351c;
  --govuk-yellow:     #ffdd00;
  --govuk-grey-1:     #f3f2f1;
  --govuk-grey-2:     #b1b4b6;
  --govuk-grey-3:     #505a5f;
  --gold:             #c9a84c;
  --gold-light:       #e8c96e;
  --white:            #ffffff;
  --card-shadow:      0 4px 24px rgba(0,0,0,0.10);
  --card-shadow-hover:0 12px 48px rgba(29,112,184,0.18);
  --radius:           8px;
  --transition:       all 0.22s cubic-bezier(0.4,0,0.2,1);
}

/* ── Reset ─────────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: 'Inter', 'Helvetica Neue', Arial, sans-serif;
  font-size: 16px;
  line-height: 1.6;
  color: var(--govuk-black);
  background: var(--govuk-grey-1);
  min-height: 100vh;
}
img { max-width: 100%; }
a { color: var(--govuk-blue); }
a:hover { color: var(--govuk-blue-hover); }

/* ── Sticky Header Wrapper ─────────────────────────────────────── */
.sticky-header-wrapper {
  position: sticky;
  top: 0;
  z-index: 1000;
  box-shadow: 0 4px 12px rgba(0,0,0,0.08);
}

/* ── GOV.UK Top Bar ─────────────────────────────────────────────── */
.govuk-top-bar {
  background: var(--govuk-black);
  padding: 10px 0;
}
.govuk-top-bar-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.govuk-crown-link {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
}
.govuk-crown-logo {
  width: 36px;
  height: 30px;
  fill: var(--white);
}
.govuk-wordmark {
  color: var(--white);
  font-size: 18px;
  font-weight: 700;
  letter-spacing: 0.5px;
}
.govuk-top-bar-links {
  display: flex;
  gap: 20px;
}
.govuk-top-bar-links a {
  color: var(--govuk-grey-2);
  text-decoration: none;
  font-size: 13px;
  transition: var(--transition);
}
.govuk-top-bar-links a:hover { color: var(--white); }

/* ── Department Header ──────────────────────────────────────────── */
.dept-header {
  background: linear-gradient(135deg, var(--govuk-blue-dark) 0%, var(--govuk-blue) 100%);
  padding: 16px 0;
  border-bottom: 4px solid var(--gold);
}
.dept-header-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}
.dept-name {
  color: var(--white);
  font-size: 22px;
  font-weight: 700;
  text-decoration: none;
  letter-spacing: -0.3px;
}
.dept-subtitle {
  color: rgba(255,255,255,0.75);
  font-size: 13px;
  font-weight: 400;
  margin-top: 2px;
}
.dept-badge {
  background: var(--gold);
  color: var(--govuk-black);
  font-size: 11px;
  font-weight: 700;
  padding: 4px 10px;
  border-radius: 20px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  white-space: nowrap;
}

/* ── Navigation ─────────────────────────────────────────────────── */
.govuk-nav {
  background: var(--govuk-black);
  border-top: 1px solid rgba(255,255,255,0.1);
}
.govuk-nav-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
  display: flex;
  align-items: center;
  gap: 0;
  overflow-x: auto;
}
.govuk-nav a {
  color: var(--govuk-grey-2);
  text-decoration: none;
  padding: 12px 16px;
  font-size: 14px;
  font-weight: 500;
  border-bottom: 3px solid transparent;
  display: inline-block;
  white-space: nowrap;
  transition: var(--transition);
}
.govuk-nav a:hover,
.govuk-nav a.active {
  color: var(--white);
  border-bottom-color: var(--gold);
}

/* ── Hero Section ────────────────────────────────────────────────── */
.hero {
  background: linear-gradient(160deg, var(--govuk-blue-dark) 0%, #1a4a7a 50%, var(--govuk-blue) 100%);
  padding: 70px 20px 80px;
  position: relative;
  overflow: hidden;
}
.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.03'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
  pointer-events: none;
}
.hero::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  right: 0;
  height: 60px;
  background: var(--govuk-grey-1);
  clip-path: ellipse(55% 100% at 50% 100%);
}
.hero-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 420px;
  gap: 60px;
  align-items: center;
  position: relative;
  z-index: 1;
}
.hero-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(255,255,255,0.12);
  border: 1px solid rgba(255,255,255,0.2);
  color: var(--white);
  font-size: 12px;
  font-weight: 600;
  padding: 6px 14px;
  border-radius: 20px;
  margin-bottom: 20px;
  letter-spacing: 0.5px;
  text-transform: uppercase;
  backdrop-filter: blur(10px);
}
.hero-tag-dot {
  width: 8px;
  height: 8px;
  background: var(--gold);
  border-radius: 50%;
  animation: pulse-dot 2s ease infinite;
}
@keyframes pulse-dot {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(1.3); }
}
.hero-title {
  font-size: clamp(28px, 4vw, 48px);
  font-weight: 800;
  color: var(--white);
  line-height: 1.15;
  margin-bottom: 18px;
  letter-spacing: -0.5px;
}
.hero-title span {
  color: var(--gold);
}
.hero-desc {
  font-size: 16px;
  color: rgba(255,255,255,0.8);
  line-height: 1.7;
  margin-bottom: 30px;
  max-width: 500px;
}
.hero-features {
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.hero-feature {
  display: flex;
  align-items: center;
  gap: 10px;
  color: rgba(255,255,255,0.85);
  font-size: 14px;
}
.hero-feature-icon {
  width: 20px;
  height: 20px;
  background: rgba(201,168,76,0.2);
  border: 1px solid var(--gold);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 10px;
  color: var(--gold);
  flex-shrink: 0;
}

/* ── Hero Search Card ────────────────────────────────────────────── */
.search-card {
  background: var(--white);
  border-radius: 16px;
  padding: 36px;
  box-shadow: 0 20px 60px rgba(0,0,0,0.25), 0 0 0 1px rgba(255,255,255,0.1);
  border-top: 4px solid var(--gold);
  position: relative;
  animation: slideUp 0.5s ease both;
}
@keyframes slideUp {
  from { opacity: 0; transform: translateY(30px); }
  to   { opacity: 1; transform: translateY(0); }
}
.search-card-title {
  font-size: 18px;
  font-weight: 700;
  color: var(--govuk-black);
  margin-bottom: 6px;
}
.search-card-desc {
  font-size: 13px;
  color: var(--govuk-grey-3);
  margin-bottom: 24px;
  line-height: 1.5;
}
.form-label {
  display: block;
  font-size: 14px;
  font-weight: 600;
  color: var(--govuk-black);
  margin-bottom: 8px;
}
.form-hint {
  font-size: 12px;
  color: var(--govuk-grey-3);
  margin-bottom: 8px;
  display: block;
}
.govuk-input {
  display: block;
  width: 100%;
  padding: 12px 16px;
  font-size: 16px;
  font-family: inherit;
  border: 2px solid var(--govuk-grey-2);
  border-radius: var(--radius);
  background: var(--white);
  color: var(--govuk-black);
  transition: var(--transition);
  outline: none;
  letter-spacing: 1px;
}
.govuk-input:focus {
  border-color: var(--govuk-blue);
  box-shadow: 0 0 0 3px rgba(29,112,184,0.15);
}
.govuk-input::placeholder { color: var(--govuk-grey-2); letter-spacing: 0; }
.govuk-input.input-uppercase { text-transform: uppercase; }

.govuk-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  width: 100%;
  padding: 14px 24px;
  font-size: 16px;
  font-family: inherit;
  font-weight: 700;
  color: #ffffff;
  background: var(--govuk-blue);
  border: none;
  border-radius: var(--radius);
  cursor: pointer;
  transition: var(--transition);
  margin-top: 16px;
  text-transform: none;
  letter-spacing: 0;
}
.govuk-btn:hover {
  background: var(--govuk-blue-hover);
  color: #ffffff;
  transform: translateY(-1px);
  box-shadow: 0 8px 24px rgba(29,112,184,0.4);
}
.govuk-btn:active { transform: translateY(0); }
.govuk-btn:disabled {
  background: var(--govuk-grey-2);
  color: #ffffff;
  cursor: not-allowed;
  transform: none;
  box-shadow: none;
}
.govuk-btn-green {
  background: var(--govuk-green);
}
.govuk-btn-green:hover {
  background: var(--govuk-green-dark);
  box-shadow: 0 8px 24px rgba(0,112,60,0.4);
}
.govuk-btn-sm {
  width: auto;
  padding: 8px 18px;
  font-size: 14px;
  margin-top: 0;
}
.govuk-btn-outline {
  background: transparent;
  border: 2px solid var(--govuk-blue);
  color: var(--govuk-blue);
}
.govuk-btn-outline:hover {
  background: var(--govuk-blue);
  color: var(--white);
}

/* ── Spinner ─────────────────────────────────────────────────────── */
.spinner {
  width: 18px;
  height: 18px;
  border: 2px solid rgba(255,255,255,0.3);
  border-top-color: var(--white);
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
  flex-shrink: 0;
}
.spinner-dark {
  border-color: rgba(29,112,184,0.2);
  border-top-color: var(--govuk-blue);
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ── Main Content ─────────────────────────────────────────────────── */
.main-content {
  max-width: 1200px;
  margin: 0 auto;
  padding: 40px 20px 80px;
}

/* ── Results Section ─────────────────────────────────────────────── */
#results-section {
  animation: fadeIn 0.4s ease both;
}
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(16px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ── Profile Card ─────────────────────────────────────────────────── */
.profile-card {
  background: var(--white);
  border-radius: 16px;
  padding: 32px;
  box-shadow: var(--card-shadow);
  border-left: 6px solid var(--govuk-blue);
  margin-bottom: 28px;
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 24px;
  align-items: start;
  transition: var(--transition);
}
.profile-card:hover { box-shadow: var(--card-shadow-hover); }
.profile-avatar {
  width: 72px;
  height: 72px;
  background: linear-gradient(135deg, var(--govuk-blue), var(--govuk-blue-dark));
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 26px;
  font-weight: 800;
  color: var(--white);
  flex-shrink: 0;
}
.profile-name {
  font-size: 24px;
  font-weight: 700;
  color: var(--govuk-black);
  margin-bottom: 4px;
}
.profile-ref {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--govuk-grey-1);
  border: 1px solid #ddd;
  border-radius: 6px;
  padding: 4px 12px;
  font-size: 13px;
  font-weight: 600;
  color: var(--govuk-grey-3);
  margin-bottom: 16px;
  font-family: 'Courier New', monospace;
}
.profile-details {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 14px;
}
.profile-detail {
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.profile-detail-label {
  font-size: 11px;
  font-weight: 600;
  color: var(--govuk-grey-2);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}
.profile-detail-value {
  font-size: 14px;
  font-weight: 500;
  color: var(--govuk-black);
}
.profile-detail-value:empty::before { content: '—'; color: var(--govuk-grey-2); }

/* ── All Paid Banner ─────────────────────────────────────────────── */
.all-paid-banner {
  background: linear-gradient(135deg, #e6f7ef, #d4f0e3);
  border: 2px solid var(--govuk-green);
  border-radius: 16px;
  padding: 28px 32px;
  display: flex;
  align-items: center;
  gap: 20px;
  margin-bottom: 28px;
  animation: fadeIn 0.4s ease both;
}
.all-paid-icon {
  width: 52px;
  height: 52px;
  background: var(--govuk-green);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  flex-shrink: 0;
}
.all-paid-title {
  font-size: 20px;
  font-weight: 700;
  color: var(--govuk-green-dark);
  margin-bottom: 4px;
}
.all-paid-desc {
  font-size: 14px;
  color: #004d28;
}

/* ── Tax Section ─────────────────────────────────────────────────── */
.section-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 20px;
  gap: 12px;
  flex-wrap: wrap;
}
.section-title {
  font-size: 20px;
  font-weight: 700;
  color: var(--govuk-black);
}
.section-count {
  background: var(--govuk-blue);
  color: var(--white);
  font-size: 13px;
  font-weight: 700;
  padding: 3px 10px;
  border-radius: 20px;
}
.taxes-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

/* ── Tax Card ─────────────────────────────────────────────────────── */
.tax-card {
  background: var(--white);
  border-radius: 16px;
  padding: 24px 28px;
  box-shadow: var(--card-shadow);
  border: 1.5px solid transparent;
  transition: var(--transition);
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 16px;
  align-items: start;
}
.tax-card:hover {
  border-color: var(--govuk-blue);
  box-shadow: var(--card-shadow-hover);
  transform: translateY(-2px);
}
.tax-card.paid   { border-left: 5px solid var(--govuk-green); }
.tax-card.pending { border-left: 5px solid var(--gold); }
.tax-card.unpaid  { border-left: 5px solid var(--govuk-red); }
.tax-name {
  font-size: 18px;
  font-weight: 700;
  color: var(--govuk-black);
  margin-bottom: 6px;
}
.tax-desc {
  font-size: 13px;
  color: var(--govuk-grey-3);
  margin-bottom: 12px;
  line-height: 1.5;
}
.tax-amount {
  font-size: 28px;
  font-weight: 800;
  color: var(--govuk-blue-dark);
  font-variant-numeric: tabular-nums;
}
.tax-amount-label {
  font-size: 12px;
  color: var(--govuk-grey-2);
  margin-top: 2px;
}
.tax-card-right {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 12px;
}
.tax-date {
  font-size: 11px;
  color: var(--govuk-grey-2);
}

/* ── Status Badges ────────────────────────────────────────────────── */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 5px 12px;
  border-radius: 20px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.3px;
  text-transform: uppercase;
}
.badge-paid {
  background: #e6f7ef;
  color: var(--govuk-green-dark);
  border: 1px solid var(--govuk-green);
}
.badge-pending {
  background: #fff8e6;
  color: #7d5c00;
  border: 1px solid var(--gold);
}
.badge-unpaid {
  background: #fde8e5;
  color: #8c1b0e;
  border: 1px solid var(--govuk-red);
}
.badge-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  display: inline-block;
}
.badge-paid .badge-dot   { background: var(--govuk-green); }
.badge-pending .badge-dot { background: var(--gold); }
.badge-unpaid .badge-dot  { background: var(--govuk-red); }

/* ── Toast Notification ───────────────────────────────────────────── */
.toast-container {
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: 9999;
  display: flex;
  flex-direction: column;
  gap: 12px;
  pointer-events: none;
}
.toast {
  background: var(--govuk-black);
  color: var(--white);
  padding: 14px 20px;
  border-radius: 10px;
  font-size: 14px;
  font-weight: 500;
  max-width: 340px;
  box-shadow: 0 8px 32px rgba(0,0,0,0.3);
  border-left: 4px solid var(--govuk-blue);
  animation: toastIn 0.3s ease both;
  pointer-events: all;
  line-height: 1.5;
}
.toast.toast-error { border-left-color: var(--govuk-red); }
.toast.toast-success { border-left-color: var(--govuk-green); }
.toast.toast-warning { border-left-color: var(--gold); }
@keyframes toastIn {
  from { opacity: 0; transform: translateX(30px); }
  to   { opacity: 1; transform: translateX(0); }
}
@keyframes toastOut {
  from { opacity: 1; transform: translateX(0); }
  to   { opacity: 0; transform: translateX(30px); }
}
.toast.removing { animation: toastOut 0.3s ease forwards; }

/* ── Full Page Loader ─────────────────────────────────────────────── */
.page-loader {
  position: fixed;
  inset: 0;
  background: rgba(11,12,12,0.6);
  backdrop-filter: blur(4px);
  z-index: 9998;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 16px;
}
.page-loader-spinner {
  width: 52px;
  height: 52px;
  border: 4px solid rgba(255,255,255,0.2);
  border-top-color: var(--gold);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}
.page-loader-text {
  color: var(--white);
  font-size: 15px;
  font-weight: 500;
}

/* ── Empty State ──────────────────────────────────────────────────── */
.empty-state {
  text-align: center;
  padding: 60px 20px;
  color: var(--govuk-grey-3);
}
.empty-state-icon { font-size: 48px; margin-bottom: 16px; }
.empty-state-title { font-size: 18px; font-weight: 600; margin-bottom: 8px; color: var(--govuk-black); }
.empty-state-desc  { font-size: 14px; }

/* ── Breadcrumb ───────────────────────────────────────────────────── */
.breadcrumb {
  background: var(--white);
  border-bottom: 1px solid #e8e8e8;
  padding: 12px 0;
}
.breadcrumb-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
}
.breadcrumb a { color: var(--govuk-blue); text-decoration: none; }
.breadcrumb a:hover { text-decoration: underline; }
.breadcrumb-sep { color: var(--govuk-grey-2); }
.breadcrumb-current { color: var(--govuk-grey-3); font-weight: 500; }

/* ── Notice Box ───────────────────────────────────────────────────── */
.notice-box {
  background: #f8f8f0;
  border-left: 5px solid var(--govuk-yellow);
  padding: 18px 24px;
  border-radius: 0 8px 8px 0;
  margin-bottom: 28px;
  font-size: 14px;
  color: var(--govuk-black);
  line-height: 1.6;
}
.notice-box strong { display: block; margin-bottom: 4px; font-size: 15px; }

/* ── Info Grid ────────────────────────────────────────────────────── */
.info-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 16px;
  margin-bottom: 32px;
}
.info-card {
  background: var(--white);
  border-radius: 12px;
  padding: 20px;
  box-shadow: var(--card-shadow);
  border-top: 3px solid var(--govuk-blue);
  transition: var(--transition);
}
.info-card:hover { transform: translateY(-3px); box-shadow: var(--card-shadow-hover); }
.info-card-label {
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--govuk-grey-2);
  margin-bottom: 6px;
}
.info-card-value {
  font-size: 20px;
  font-weight: 800;
  color: var(--govuk-black);
}

/* ── Footer ───────────────────────────────────────────────────────── */
.footer {
  background: var(--govuk-black);
  padding: 40px 0 24px;
  margin-top: auto;
}
.footer-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}
.footer-top {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 40px;
  padding-bottom: 28px;
  border-bottom: 1px solid rgba(255,255,255,0.1);
  margin-bottom: 24px;
}
.footer-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  margin-bottom: 12px;
}
.footer-logo-text { color: var(--white); font-size: 16px; font-weight: 700; }
.footer-desc {
  color: var(--govuk-grey-2);
  font-size: 13px;
  line-height: 1.7;
  max-width: 400px;
}
.footer-links {
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.footer-links a {
  color: var(--govuk-grey-2);
  text-decoration: none;
  font-size: 13px;
  transition: var(--transition);
}
.footer-links a:hover { color: var(--white); }
.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  flex-wrap: wrap;
}
.footer-legal {
  color: rgba(255,255,255,0.4);
  font-size: 12px;
  line-height: 1.6;
}
.footer-crown {
  fill: rgba(255,255,255,0.3);
  width: 24px;
  height: 20px;
}

/* ── Utilities ────────────────────────────────────────────────────── */
.hidden { display: none !important; }
.text-center { text-align: center; }
.mb-0 { margin-bottom: 0 !important; }
.mb-8 { margin-bottom: 8px; }
.mb-16 { margin-bottom: 16px; }
.mb-24 { margin-bottom: 24px; }
.mt-16 { margin-top: 16px; }
.d-flex { display: flex; }
.gap-12 { gap: 12px; }
.flex-wrap { flex-wrap: wrap; }

/* ── Divider ──────────────────────────────────────────────────────── */
.divider {
  border: none;
  border-top: 1px solid #e8e8e8;
  margin: 24px 0;
}

/* ── Mobile Hamburger ─────────────────────────────────────────────── */
.mobile-menu-btn {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 6px;
  color: var(--govuk-grey-2);
}
.mobile-menu-btn span {
  display: block;
  width: 22px;
  height: 2px;
  background: currentColor;
  margin: 4px 0;
  transition: var(--transition);
}

/* ── Progress Steps ───────────────────────────────────────────────── */
.progress-steps {
  display: flex;
  align-items: center;
  gap: 0;
  margin-bottom: 40px;
  overflow-x: auto;
  padding-bottom: 4px;
}
.progress-step {
  display: flex;
  align-items: center;
  gap: 0;
  flex: 1;
  min-width: 0;
}
.progress-step-circle {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  border: 2px solid var(--govuk-grey-2);
  background: var(--white);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  font-weight: 700;
  color: var(--govuk-grey-2);
  flex-shrink: 0;
  transition: var(--transition);
  position: relative;
  z-index: 1;
}
.progress-step.active .progress-step-circle {
  border-color: var(--govuk-blue);
  background: var(--govuk-blue);
  color: var(--white);
}
.progress-step.done .progress-step-circle {
  border-color: var(--govuk-green);
  background: var(--govuk-green);
  color: var(--white);
}
.progress-step-label {
  font-size: 12px;
  font-weight: 600;
  color: var(--govuk-grey-2);
  white-space: nowrap;
  margin-left: 8px;
}
.progress-step.active .progress-step-label { color: var(--govuk-blue); }
.progress-step.done .progress-step-label { color: var(--govuk-green); }
.progress-step-line {
  flex: 1;
  height: 2px;
  background: var(--govuk-grey-2);
  margin: 0 8px;
  transition: var(--transition);
}
.progress-step.done .progress-step-line { background: var(--govuk-green); }

/* ── Payment Method Cards ─────────────────────────────────────────── */
.payment-methods-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
  gap: 14px;
  margin-bottom: 28px;
}
.payment-method-card {
  border: 2px solid #e8e8e8;
  border-radius: 12px;
  padding: 20px 16px;
  text-align: center;
  cursor: pointer;
  transition: var(--transition);
  background: var(--white);
  position: relative;
  user-select: none;
}
.payment-method-card:hover {
  border-color: var(--govuk-blue);
  transform: translateY(-3px);
  box-shadow: 0 8px 24px rgba(29,112,184,0.15);
}
.payment-method-card.selected {
  border-color: var(--govuk-blue);
  background: #f0f7ff;
}
.payment-method-card.disabled {
  opacity: 0.5;
  cursor: not-allowed;
}
.payment-method-card.disabled:hover { transform: none; box-shadow: none; border-color: #e8e8e8; }
.payment-method-icon {
  font-size: 28px;
  margin-bottom: 8px;
  display: block;
}
.payment-method-name {
  font-size: 13px;
  font-weight: 600;
  color: var(--govuk-black);
}
.payment-method-status {
  font-size: 10px;
  color: var(--govuk-grey-2);
  margin-top: 3px;
}
.payment-method-check {
  position: absolute;
  top: 8px;
  right: 8px;
  width: 18px;
  height: 18px;
  background: var(--govuk-blue);
  border-radius: 50%;
  display: none;
  align-items: center;
  justify-content: center;
  font-size: 10px;
  color: var(--white);
}
.payment-method-card.selected .payment-method-check { display: flex; }

/* ── File Upload ──────────────────────────────────────────────────── */
.file-upload-area {
  border: 2px dashed #cbd5e1;
  border-radius: 16px;
  padding: 48px 24px;
  text-align: center;
  cursor: pointer;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  background: #f8fafc;
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}
.file-upload-area::before {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--govuk-blue);
  opacity: 0;
  transition: opacity 0.3s;
}
.file-upload-area:hover, .file-upload-area.drag-over {
  border-color: var(--govuk-blue);
  background: #f0f7ff;
  transform: translateY(-2px);
  box-shadow: 0 12px 24px rgba(29, 112, 184, 0.1);
}
.file-upload-area:hover::before, .file-upload-area.drag-over::before {
  opacity: 0.02;
}
.file-upload-area input[type="file"] {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  opacity: 0;
  cursor: pointer;
  z-index: 10;
}
.file-upload-icon { 
  margin-bottom: 16px; 
  color: var(--govuk-blue);
  transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}
.file-upload-area:hover .file-upload-icon {
  transform: translateY(-4px) scale(1.05);
}
.file-upload-text {
  font-size: 16px;
  font-weight: 700;
  color: var(--govuk-black);
  margin-bottom: 8px;
  position: relative;
  z-index: 2;
}
.file-upload-hint { 
  font-size: 13px; 
  color: var(--govuk-grey-3); 
  font-weight: 500;
  position: relative;
  z-index: 2;
}
.file-upload-preview {
  margin-top: 16px;
  border-radius: 10px;
  overflow: hidden;
  max-height: 200px;
}
.file-upload-preview img {
  width: 100%;
  max-height: 200px;
  object-fit: cover;
  border-radius: 10px;
}

/* ── Success Screen ───────────────────────────────────────────────── */
.success-screen {
  text-align: center;
  padding: 60px 40px;
  animation: fadeIn 0.4s ease both;
}
.success-icon {
  width: 80px;
  height: 80px;
  background: linear-gradient(135deg, var(--govuk-green), #00a050);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 36px;
  margin: 0 auto 24px;
  box-shadow: 0 12px 40px rgba(0,112,60,0.3);
}
.success-title {
  font-size: 28px;
  font-weight: 800;
  color: var(--govuk-black);
  margin-bottom: 12px;
}
.success-desc {
  font-size: 15px;
  color: var(--govuk-grey-3);
  line-height: 1.7;
  max-width: 440px;
  margin: 0 auto 32px;
}

/* ══ RESPONSIVE ═══════════════════════════════════════════════════ */
@media (max-width: 900px) {
  .hero-inner {
    grid-template-columns: 1fr;
    gap: 36px;
  }
  .hero { padding: 50px 20px 70px; }
  .hero-inner .search-card { max-width: 100%; }
  .dept-header-inner { flex-wrap: wrap; gap: 10px; }
  .footer-top { grid-template-columns: 1fr; }
}
@media (max-width: 640px) {
  .govuk-top-bar-links { display: none; }
  .mobile-menu-btn { display: block; }
  .govuk-nav-inner { flex-direction: column; align-items: flex-start; }
  .govuk-nav { display: none; }
  .govuk-nav.open { display: block; }
  .profile-card { grid-template-columns: 1fr; gap: 16px; }
  .tax-card { grid-template-columns: 1fr; }
  .tax-card-right { align-items: flex-start; flex-direction: row; flex-wrap: wrap; }
  .dept-name { font-size: 17px; }
  .hero-title { font-size: 24px; }
  .search-card { padding: 24px 20px; }
  .profile-details { grid-template-columns: 1fr 1fr; }
  .info-grid { grid-template-columns: 1fr 1fr; }
  .payment-methods-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 400px) {
  .profile-details { grid-template-columns: 1fr; }
  .info-grid { grid-template-columns: 1fr; }
  .payment-methods-grid { grid-template-columns: repeat(2, 1fr); }
}

/* ── Landing Page Enhanced Sections ── */
.landing-section-wrapper {
  padding: 80px 20px;
  border-bottom: 1px solid var(--govuk-grey-2);
}
.landing-section-wrapper:nth-child(even) {
  background-color: var(--govuk-grey-1);
}
.landing-section {
  max-width: 1200px;
  margin: 0 auto;
}
.landing-section-header {
  text-align: center;
  max-width: 800px;
  margin: 0 auto 50px;
}
.landing-section h2 {
  font-size: 36px;
  font-weight: 800;
  margin-bottom: 16px;
  color: var(--govuk-black);
  letter-spacing: -0.5px;
}
.landing-section-desc {
  font-size: 18px;
  color: var(--govuk-grey-3);
  line-height: 1.6;
}
.landing-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 30px;
}
.step-card {
  background: var(--white);
  padding: 40px 30px;
  border-radius: 16px;
  border: 1px solid rgba(0,0,0,0.05);
  box-shadow: 0 10px 30px rgba(0,0,0,0.04);
  position: relative;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  overflow: hidden;
}
.step-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 15px 40px rgba(0,0,0,0.08);
}
.step-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: linear-gradient(90deg, var(--govuk-blue), var(--govuk-green-dark));
}
.step-number {
  width: 50px;
  height: 50px;
  background: rgba(29, 112, 184, 0.1);
  color: var(--govuk-blue);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  font-weight: 800;
  margin-bottom: 24px;
}
.step-title {
  font-size: 22px;
  font-weight: 800;
  margin-bottom: 12px;
  color: var(--govuk-black);
}
.step-desc {
  font-size: 16px;
  color: var(--govuk-grey-3);
  line-height: 1.6;
}
.faq-container {
  max-width: 800px;
  margin: 0 auto;
  background: var(--white);
  border-radius: 16px;
  box-shadow: 0 10px 30px rgba(0,0,0,0.04);
  overflow: hidden;
}
.faq-item {
  border-bottom: 1px solid var(--govuk-grey-2);
  padding: 24px 30px;
  transition: background-color 0.2s ease;
}
.faq-item:last-child {
  border-bottom: none;
}
.faq-item:hover {
  background-color: var(--govuk-grey-1);
}
.faq-question {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 12px;
  color: var(--govuk-black);
}
.faq-answer {
  font-size: 16px;
  color: var(--govuk-grey-3);
  line-height: 1.6;
}
.trust-banner {
  background: linear-gradient(135deg, #0B0C0C, #1D70B8);
  padding: 60px 40px;
  text-align: center;
  border-radius: 20px;
  box-shadow: 0 20px 40px rgba(0,0,0,0.15);
  color: var(--white);
}
.trust-title {
  font-size: 28px;
  font-weight: 800;
  margin-bottom: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
}
.trust-desc {
  font-size: 18px;
  color: rgba(255,255,255,0.8);
  max-width: 700px;
  margin: 0 auto;
  line-height: 1.6;
}