/* ======================================================
   BillofQuantity Design System v3.0
   Inter + Professional Minimal + Engineering Tool
   ====================================================== */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800;900&display=swap');

/* ── Design Tokens ──────────────────────────────────── */
:root {
  /* Primary palette */
  --primary-50:  #eff6ff;
  --primary-100: #dbeafe;
  --primary-200: #bfdbfe;
  --primary-300: #93c5fd;
  --primary-400: #60a5fa;
  --primary-500: #3b82f6;
  --primary-600: #2563eb;
  --primary-700: #1d4ed8;
  --primary-800: #1e40af;
  --primary-900: #1e3a8a;

  /* Accent (CTA / Orange) */
  --accent-400: #fb923c;
  --accent-500: #f97316;
  --accent-600: #ea580c;

  /* Semantic */
  --success: #10b981;
  --warning: #f59e0b;
  --error:   #ef4444;
  --info:    #06b6d4;

  /* Surface */
  --bg:          #f0f4f9;
  --bg-subtle:   #e8eef6;
  --surface:     rgba(255,255,255,0.92);
  --surface-alt: rgba(248,251,255,0.88);

  /* Text */
  --text-1: #0f172a;
  --text-2: #334155;
  --text-3: #64748b;
  --text-4: #94a3b8;

  /* Border */
  --border:  rgba(148,163,184,0.20);
  --border-hover: rgba(148,163,184,0.38);
  --border-focus: rgba(37,99,235,0.44);

  /* Shadow */
  --shadow-xs: 0 1px 2px rgba(15,23,42,0.05);
  --shadow-sm: 0 4px 12px rgba(15,23,42,0.06);
  --shadow-md: 0 8px 24px rgba(15,23,42,0.08);
  --shadow-lg: 0 16px 48px rgba(15,23,42,0.12);
  --shadow-xl: 0 24px 64px rgba(15,23,42,0.16);
  --shadow-glow: 0 0 0 1px rgba(255,255,255,0.5), 0 8px 32px rgba(37,99,235,0.10);

  /* Radius */
  --r-xs: 8px;
  --r-sm: 12px;
  --r-md: 16px;
  --r-lg: 20px;
  --r-xl: 24px;
  --r-2xl: 28px;
  --r-full: 999px;

  /* Transition */
  --ease: cubic-bezier(0.22,0.61,0.36,1);
  --dur-fast: 150ms;
  --dur: 200ms;
  --dur-slow: 300ms;

  /* Z-index scale */
  --z-base: 0;
  --z-sticky: 10;
  --z-nav: 20;
  --z-header: 30;
  --z-tooltip: 100;
  --z-modal: 1000;
}

/* ── Reset & Base ───────────────────────────────────── */
*,*::before,*::after { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: 'Inter', -apple-system, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  font-size: 15px;
  line-height: 1.6;
  color: var(--text-1);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

/* Subtle grid pattern background */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  background-image:
    radial-gradient(circle at 20% 0%, rgba(37,99,235,0.07), transparent 40%),
    radial-gradient(circle at 80% 0%, rgba(249,115,22,0.05), transparent 30%),
    linear-gradient(rgba(148,163,184,0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(148,163,184,0.04) 1px, transparent 1px);
  background-size: 100%, 100%, 40px 40px, 40px 40px;
  mask-image: linear-gradient(180deg, rgba(0,0,0,0.5), transparent 70%);
  pointer-events: none;
  z-index: -1;
}

a { color: inherit; text-decoration: none; }
::selection { background: var(--primary-600); color: #fff; }
img { max-width: 100%; height: auto; }

/* ── Keyframe Animations ────────────────────────────── */
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(16px); }
  to   { opacity: 1; transform: translateY(0); }
}

@keyframes fadeIn {
  from { opacity: 0; }
  to   { opacity: 1; }
}

@keyframes slideInDown {
  from { opacity: 0; transform: translateY(-12px); }
  to   { opacity: 1; transform: translateY(0); }
}

@keyframes shimmer {
  0%   { background-position: -200% 0; }
  100% { background-position: 200% 0; }
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.6; }
}

@keyframes scaleIn {
  from { opacity: 0; transform: scale(0.95); }
  to   { opacity: 1; transform: scale(1); }
}

/* ── Layout Container ───────────────────────────────── */
.container {
  width: min(1440px, calc(100% - 40px));
  margin: 0 auto;
}

/* ── Header ─────────────────────────────────────────── */
header {
  position: sticky;
  top: 0;
  z-index: var(--z-header);
  backdrop-filter: blur(20px) saturate(1.3);
  -webkit-backdrop-filter: blur(20px) saturate(1.3);
  background:
    linear-gradient(135deg, rgba(15,23,42,0.92), rgba(30,58,138,0.90)),
    linear-gradient(90deg, rgba(249,115,22,0.12), transparent);
  border-bottom: 1px solid rgba(255,255,255,0.08);
  box-shadow:
    0 1px 0 rgba(255,255,255,0.06),
    0 12px 36px rgba(15,23,42,0.18);
}

header::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse at 100% 0%, rgba(59,130,246,0.15), transparent 50%),
    radial-gradient(ellipse at 0% 100%, rgba(249,115,22,0.08), transparent 50%);
  pointer-events: none;
}

header .container {
  position: relative;
  z-index: 1;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.85rem 0;
}

/* Brand */
.brand-block {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.brand-copy {
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
}

h1 {
  margin: 0;
  font-size: clamp(1.15rem, 1.6vw, 1.55rem);
  font-weight: 800;
  line-height: 1.2;
  letter-spacing: -0.03em;
  color: #fff;
}

.brand-subtitle {
  font-size: 0.82rem;
  font-weight: 400;
  color: rgba(255,255,255,0.60);
  letter-spacing: 0.01em;
}

/* Header actions */
.header-actions {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.logout-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  min-height: 40px;
  padding: 0.55rem 1rem;
  border-radius: var(--r-full);
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.01em;
  text-decoration: none;
  color: rgba(255,255,255,0.85);
  background: rgba(255,255,255,0.08);
  border: 1px solid rgba(255,255,255,0.12);
  transition:
    transform var(--dur) var(--ease),
    background var(--dur) var(--ease),
    border-color var(--dur) var(--ease),
    color var(--dur) var(--ease);
  cursor: pointer;
}

.logout-btn:hover {
  transform: translateY(-1px);
  background: rgba(255,255,255,0.16);
  border-color: rgba(255,255,255,0.24);
  color: #fff;
}

.logout-btn:active {
  transform: translateY(0) scale(0.97);
}

/* ── App Layout ─────────────────────────────────────── */
.app-layout {
  min-height: calc(100vh - 80px);
}

/* ── Navigation / Filter Bar ────────────────────────── */
.sidebar-nav {
  position: relative;
  z-index: var(--z-nav);
  width: 100%;
  padding: 1.2rem 0 0;
  background: transparent;
  border-bottom: 0;
  box-shadow: none;
}

.nav-form {
  width: min(1440px, calc(100% - 40px));
  margin: 0 auto;
  padding: 1rem 1.2rem;
  border-radius: var(--r-xl);
  background: linear-gradient(180deg, rgba(255,255,255,0.96), rgba(255,255,255,0.90));
  border: 1px solid rgba(255,255,255,0.80);
  box-shadow: var(--shadow-glow);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  animation: slideInDown var(--dur-slow) var(--ease) both;
}

.nav-form-grid {
  display: grid;
  grid-template-columns: repeat(6, minmax(0,1fr));
  gap: 0.75rem;
  align-items: end;
}

/* Nav sections */
.nav-section { margin: 0; }

.nav-section label,
.form-group label {
  display: block;
  margin-bottom: 0.4rem;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text-3);
}

/* Input controls */
.nav-control,
.form-control,
.filter-input {
  width: 100%;
  min-height: 44px;
  padding: 0.65rem 0.85rem;
  border: 1px solid var(--border);
  border-radius: var(--r-sm);
  background: rgba(255,255,255,0.98);
  color: var(--text-1);
  font-family: inherit;
  font-size: 0.9rem;
  font-weight: 500;
  transition:
    border-color var(--dur) var(--ease),
    box-shadow var(--dur) var(--ease),
    background var(--dur) var(--ease);
  appearance: none;
  -webkit-appearance: none;
}

/* Select arrow */
select.nav-control {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' fill='none' stroke='%2364748b' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M4 6l4 4 4-4'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 0.7rem center;
  background-size: 16px;
  padding-right: 2.2rem;
}

.nav-control:hover,
.form-control:hover,
.filter-input:hover {
  border-color: var(--border-hover);
}

.nav-control:focus,
.form-control:focus,
.filter-input:focus {
  outline: none;
  border-color: var(--border-focus);
  box-shadow: 0 0 0 3px rgba(37,99,235,0.10);
  background: #fff;
}

.nav-control::placeholder,
.form-control::placeholder,
.filter-input::placeholder {
  color: var(--text-4);
  font-weight: 400;
}

/* Nav actions */
.nav-actions {
  display: flex;
  gap: 0.5rem;
  grid-column: span 1;
}

/* ── Buttons ────────────────────────────────────────── */
.nav-btn,
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.45rem;
  min-height: 44px;
  padding: 0.7rem 1rem;
  border: 0;
  border-radius: var(--r-sm);
  font-family: inherit;
  font-size: 0.88rem;
  font-weight: 700;
  letter-spacing: 0.01em;
  cursor: pointer;
  user-select: none;
  transition:
    transform var(--dur) var(--ease),
    box-shadow var(--dur) var(--ease),
    background var(--dur) var(--ease),
    opacity var(--dur) var(--ease);
}

.nav-btn:hover,
.btn:hover {
  transform: translateY(-1px);
}

.nav-btn:active,
.btn:active {
  transform: translateY(0) scale(0.97);
}

.nav-btn:disabled,
.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none;
}

/* Primary button */
.nav-btn-primary,
.btn {
  color: #fff;
  background: linear-gradient(135deg, var(--primary-600), var(--primary-500));
  box-shadow: 0 4px 16px rgba(37,99,235,0.25);
}

.nav-btn-primary:hover,
.btn:hover {
  background: linear-gradient(135deg, var(--primary-700), var(--primary-600));
  box-shadow: 0 6px 20px rgba(37,99,235,0.30);
}

/* Secondary button */
.nav-btn-secondary {
  color: var(--text-2);
  background: #fff;
  border: 1px solid var(--border);
  box-shadow: var(--shadow-xs);
}

.nav-btn-secondary:hover {
  background: var(--primary-50);
  border-color: var(--primary-200);
  color: var(--primary-700);
}

/* ── Main Content ───────────────────────────────────── */
.main-content {
  width: min(1440px, calc(100% - 40px));
  margin: 0 auto;
  padding: 1rem 0 2rem;
  animation: fadeInUp var(--dur-slow) var(--ease) 100ms both;
}

/* ── Results Section ────────────────────────────────── */
.results-section {
  display: grid;
  gap: 0.85rem;
}

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

.result-title-group {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
}

.result-eyebrow {
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.10em;
  text-transform: uppercase;
  color: var(--primary-600);
}

.result-header h2 {
  margin: 0;
  font-size: clamp(1.1rem, 1.5vw, 1.5rem);
  font-weight: 800;
  line-height: 1.25;
  letter-spacing: -0.03em;
  color: var(--text-1);
}

.result-subtitle {
  margin: 0;
  font-size: 0.88rem;
  color: var(--text-3);
}

/* ── Table ──────────────────────────────────────────── */
.table-responsive {
  overflow: auto;
  border-radius: var(--r-xl);
  border: 1px solid rgba(226,232,240,0.60);
  background: rgba(255,255,255,0.92);
  box-shadow: var(--shadow-md);
  animation: fadeInUp var(--dur-slow) var(--ease) 180ms both;
}

.results-table {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;
  table-layout: fixed;
  min-width: 1100px;
}

/* Table header */
.results-table thead th {
  position: sticky;
  top: 0;
  z-index: 3;
  padding: 0.85rem 0.9rem;
  background: linear-gradient(180deg, #f8fafe, #f1f5fb);
  border-bottom: 1px solid rgba(226,232,240,0.70);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text-3);
  text-align: left;
  user-select: none;
  white-space: nowrap;
}

.results-table th.sortable {
  cursor: pointer;
  transition: background var(--dur-fast) var(--ease);
}

.results-table th.sortable:hover {
  background: linear-gradient(180deg, #eef2f9, #e8eef6);
  color: var(--text-2);
}

.sort-indicator {
  display: inline-flex;
  margin-left: 0.35rem;
  font-size: 0.85rem;
  color: var(--text-4);
  opacity: 0.6;
  transition: color var(--dur-fast) var(--ease), opacity var(--dur-fast) var(--ease);
  vertical-align: middle;
}

.sort-indicator.active {
  color: var(--primary-600);
  opacity: 1;
}

/* Filter row */
.filter-row th {
  position: sticky;
  top: 47px;
  z-index: 2;
  padding: 0.45rem 0.55rem 0.55rem;
  background: #f5f8fd;
  border-bottom: 1px solid rgba(226,232,240,0.50);
  cursor: default;
}

.filter-row th:hover {
  background: #f5f8fd;
}

.filter-input {
  min-height: 36px;
  padding: 0.45rem 0.65rem;
  font-size: 0.82rem;
  border-radius: var(--r-xs);
}

/* Table body */
.results-table td {
  padding: 0.75rem 0.9rem;
  border-bottom: 1px solid rgba(241,245,249,0.95);
  vertical-align: top;
  color: var(--text-1);
  background: rgba(255,255,255,0.80);
  font-size: 0.88rem;
  line-height: 1.55;
  transition: background var(--dur-fast) var(--ease);
}

.results-table tbody tr:nth-child(even) td {
  background: rgba(248,250,255,0.90);
}

.results-table tbody tr {
  transition: background var(--dur-fast) var(--ease);
}

.results-table tbody tr:hover td {
  background: rgba(239,246,255,0.80);
}

/* Copyable cells */
.copyable {
  cursor: pointer;
  transition: background var(--dur-fast) var(--ease);
}

.copyable:hover {
  background: rgba(37,99,235,0.05) !important;
}

.copyable code {
  display: inline-flex;
  padding: 0.2rem 0.45rem;
  border-radius: var(--r-xs);
  background: var(--primary-50);
  color: var(--primary-700);
  font-family: 'Cascadia Code', 'Fira Code', 'Consolas', monospace;
  font-size: 0.84rem;
  font-weight: 600;
  letter-spacing: 0.01em;
}

.copyable strong {
  font-weight: 700;
  color: var(--text-1);
}

/* Feature preview blocks */
.feature-preview {
  display: block;
  padding: 0.55rem 0.7rem;
  border-radius: var(--r-xs);
  background: var(--surface-alt);
  color: var(--text-2);
  font-size: 0.84rem;
  line-height: 1.5;
  white-space: pre-line;
  word-break: break-word;
  transition: background var(--dur) var(--ease), border-color var(--dur) var(--ease);
  border: 1px solid transparent;
}

.feature-preview:hover {
  background: #fff;
  border-color: var(--border);
}

/* Column resizer */
.resizable { position: relative; }

.resizer {
  position: absolute;
  top: 0;
  right: 0;
  width: 4px;
  height: 100%;
  cursor: col-resize;
  opacity: 0;
  background: var(--primary-400);
  border-radius: 2px;
  transition: opacity var(--dur-fast) var(--ease);
}

.resizable:hover .resizer {
  opacity: 0.5;
}

.resizer:hover,
.resizer:active {
  opacity: 1 !important;
}

/* ── Pagination ─────────────────────────────────────── */
.pagination {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
  flex-wrap: wrap;
  margin-top: 0.5rem;
}

.page-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 42px;
  min-height: 42px;
  padding: 0.6rem 0.9rem;
  border-radius: var(--r-sm);
  border: 1px solid var(--border);
  background: #fff;
  color: var(--text-2);
  font-size: 0.85rem;
  font-weight: 600;
  text-decoration: none;
  box-shadow: var(--shadow-xs);
  cursor: pointer;
  transition:
    transform var(--dur) var(--ease),
    background var(--dur) var(--ease),
    color var(--dur) var(--ease),
    border-color var(--dur) var(--ease),
    box-shadow var(--dur) var(--ease);
}

.page-link:hover {
  transform: translateY(-1px);
  color: var(--primary-700);
  background: var(--primary-50);
  border-color: var(--primary-200);
  box-shadow: var(--shadow-sm);
}

.page-link:active {
  transform: translateY(0) scale(0.97);
}

.page-link.disabled {
  opacity: 0.4;
  pointer-events: none;
}

.page-info {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.55rem 0.9rem;
  border-radius: var(--r-sm);
  border: 1px solid var(--border);
  background: #fff;
  box-shadow: var(--shadow-xs);
  color: var(--text-3);
  font-size: 0.85rem;
  font-weight: 500;
}

.page-info strong {
  color: var(--text-1);
  font-weight: 700;
}

.pageSize-select {
  min-height: 34px;
  padding: 0.3rem 0.6rem;
  border-radius: var(--r-xs);
  font-size: 0.82rem;
}

/* ── Empty / No Results ─────────────────────────────── */
.no-results {
  position: relative;
  overflow: hidden;
  padding: 4rem 2rem;
  border-radius: var(--r-xl);
  border: 1px solid rgba(226,232,240,0.50);
  background: linear-gradient(180deg, rgba(255,255,255,0.97), rgba(248,251,255,0.94));
  box-shadow: var(--shadow-md);
  text-align: center;
  animation: scaleIn var(--dur-slow) var(--ease) both;
}

.no-results::before {
  content: "";
  position: absolute;
  top: -60px;
  left: 50%;
  transform: translateX(-50%);
  width: 200px;
  height: 200px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(37,99,235,0.06), transparent 70%);
  pointer-events: none;
}

.no-results::after {
  content: "";
  position: absolute;
  right: -40px;
  bottom: -40px;
  width: 180px;
  height: 180px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(249,115,22,0.06), transparent 70%);
  pointer-events: none;
}

.empty-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 68px;
  height: 68px;
  margin-bottom: 1.2rem;
  border-radius: var(--r-lg);
  background: linear-gradient(135deg, var(--primary-50), rgba(249,115,22,0.08));
  color: var(--primary-600);
  font-size: 1.4rem;
  font-weight: 900;
  letter-spacing: -0.02em;
  box-shadow: 0 4px 16px rgba(37,99,235,0.10);
}

.no-results h3 {
  margin: 0 0 0.6rem;
  font-size: 1.35rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  color: var(--text-1);
}

.no-results p {
  margin: 0 auto;
  max-width: 46ch;
  color: var(--text-3);
  font-size: 0.92rem;
  line-height: 1.6;
}

/* ── Detail Cards ───────────────────────────────────── */
.detail-card {
  overflow: hidden;
  border-radius: var(--r-xl);
  background: var(--surface);
  border: 1px solid rgba(226,232,240,0.50);
  box-shadow: var(--shadow-md);
}

.detail-title {
  padding: 1.5rem 2rem;
  color: #fff;
  background: linear-gradient(135deg, rgba(15,23,42,0.95), rgba(30,58,138,0.90));
}

.detail-title h2 { margin: 0; }

.detail-section { padding: 1.5rem 2rem; }

.detail-item {
  padding-bottom: 1.2rem;
  margin-bottom: 1.2rem;
  border-bottom: 1px solid var(--border);
}

.detail-item:last-child {
  padding-bottom: 0;
  margin-bottom: 0;
  border-bottom: 0;
}

.detail-item-label {
  margin-bottom: 0.4rem;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text-3);
}

.detail-content pre {
  margin: 0;
  padding: 0.85rem;
  border-radius: var(--r-sm);
  background: var(--surface-alt);
  border: 1px solid var(--border);
  white-space: pre-wrap;
  font-family: inherit;
  font-size: 0.88rem;
  line-height: 1.55;
}

.back-link {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.6rem 0.9rem;
  border-radius: var(--r-sm);
  border: 1px solid var(--border);
  text-decoration: none;
  background: #fff;
  box-shadow: var(--shadow-xs);
  font-weight: 600;
  font-size: 0.88rem;
  transition: all var(--dur) var(--ease);
}

.back-link:hover {
  background: var(--primary-50);
  border-color: var(--primary-200);
  color: var(--primary-700);
}

/* ── Login Page ─────────────────────────────────────── */
.login-container {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 24px;
  background:
    radial-gradient(ellipse at 20% 20%, rgba(59,130,246,0.22), transparent 50%),
    radial-gradient(ellipse at 80% 80%, rgba(249,115,22,0.10), transparent 50%),
    linear-gradient(145deg, #0f172a 0%, #1e3a8a 55%, #1d4ed8 100%);
  overflow: hidden;
}

/* Animated background for login */
.login-container::before {
  content: "";
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background:
    radial-gradient(circle at 30% 30%, rgba(59,130,246,0.08), transparent 40%),
    radial-gradient(circle at 70% 70%, rgba(249,115,22,0.05), transparent 40%);
  animation: pulse 8s ease-in-out infinite;
  pointer-events: none;
}

.login-shell {
  position: relative;
  width: min(1020px, 100%);
  display: grid;
  grid-template-columns: minmax(280px,1fr) minmax(340px,400px);
  gap: 1.2rem;
  align-items: stretch;
  animation: scaleIn 600ms var(--ease) both;
}

.login-showcase,
.login-card {
  border-radius: var(--r-2xl);
  border: 1px solid rgba(255,255,255,0.10);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
}

.login-showcase {
  position: relative;
  overflow: hidden;
  padding: 2.5rem 2rem;
  color: #fff;
  background:
    linear-gradient(180deg, rgba(255,255,255,0.05), rgba(255,255,255,0.02));
  box-shadow: 0 20px 60px rgba(15,23,42,0.30);
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.login-showcase::after {
  content: "";
  position: absolute;
  right: -50px;
  bottom: -50px;
  width: 200px;
  height: 200px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(59,130,246,0.15), transparent 70%);
  pointer-events: none;
}

.showcase-kicker {
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.10em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.55);
}

.showcase-title {
  margin: 0.8rem 0;
  font-size: clamp(1.6rem, 2.6vw, 2.2rem);
  font-weight: 900;
  line-height: 1.15;
  letter-spacing: -0.04em;
}

.showcase-description {
  max-width: 28ch;
  color: rgba(255,255,255,0.55);
  font-size: 0.92rem;
  line-height: 1.6;
}

.login-card {
  padding: 2rem;
  background: linear-gradient(180deg, rgba(255,255,255,0.97), rgba(248,251,255,0.94));
  box-shadow: 0 20px 60px rgba(15,23,42,0.20);
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.login-card-header {
  margin-bottom: 1.5rem;
}

.login-kicker {
  display: inline-flex;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.10em;
  text-transform: uppercase;
  color: var(--primary-600);
}

.login-title {
  margin: 0.3rem 0 0.4rem;
  font-size: 1.65rem;
  font-weight: 900;
  letter-spacing: -0.04em;
  color: var(--text-1);
}

.login-subtitle {
  margin: 0;
  color: var(--text-3);
  font-size: 0.88rem;
  line-height: 1.55;
}

.login-footer-note {
  margin-top: 1.2rem;
  padding-top: 1rem;
  border-top: 1px solid var(--border);
  color: var(--text-4);
  font-size: 0.82rem;
  text-align: center;
  line-height: 1.5;
}

/* ── Error / Status ─────────────────────────────────── */
.error-message {
  padding: 0.8rem 1rem;
  margin-bottom: 1.1rem;
  border-radius: var(--r-sm);
  border: 1px solid rgba(239,68,68,0.18);
  background: #fef2f2;
  color: #b91c1c;
  font-weight: 600;
  font-size: 0.88rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  animation: fadeIn var(--dur) var(--ease);
}

/* Loading spinner */
.loading {
  display: inline-block;
  width: 16px;
  height: 16px;
  border: 2px solid rgba(255,255,255,0.25);
  border-top-color: #fff;
  border-radius: var(--r-full);
  animation: spin 0.7s linear infinite;
}

/* ── Form ───────────────────────────────────────────── */
.search-form {
  padding: 1.2rem;
  border-radius: var(--r-xl);
  background: var(--surface);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-md);
}

.form-group {
  margin-bottom: 1rem;
}

.form-actions {
  display: flex;
  justify-content: flex-end;
  gap: 0.75rem;
  margin-top: 1.2rem;
}

/* ── Focus States ───────────────────────────────────── */
.btn:focus-visible,
.nav-btn:focus-visible,
.nav-control:focus-visible,
.form-control:focus-visible,
.filter-input:focus-visible,
.page-link:focus-visible,
.logout-btn:focus-visible {
  outline: 2px solid var(--primary-500);
  outline-offset: 2px;
}

/* ── Toast Notification ─────────────────────────────── */
.toast {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%) translateY(100%);
  padding: 0.7rem 1.2rem;
  border-radius: var(--r-sm);
  background: var(--text-1);
  color: #fff;
  font-size: 0.85rem;
  font-weight: 600;
  box-shadow: var(--shadow-lg);
  z-index: var(--z-tooltip);
  opacity: 0;
  transition: all var(--dur-slow) var(--ease);
  pointer-events: none;
}

.toast.show {
  transform: translateX(-50%) translateY(0);
  opacity: 1;
}

/* ── Responsive ─────────────────────────────────────── */
@media (max-width: 1200px) {
  .nav-form-grid {
    grid-template-columns: repeat(3, minmax(0,1fr));
  }
}

@media (max-width: 900px) {
  header .container {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.5rem;
  }

  .header-actions {
    justify-content: flex-start;
    flex-wrap: wrap;
    width: 100%;
  }

  .result-header {
    flex-direction: column;
  }

  .login-shell,
  .nav-form-grid {
    grid-template-columns: 1fr;
  }

  .nav-actions {
    grid-column: span 1;
  }

  .login-showcase {
    min-height: auto;
    padding: 2rem 1.5rem;
  }
}

@media (max-width: 768px) {
  .container,
  .nav-form,
  .main-content {
    width: min(100%, calc(100% - 24px));
  }

  header .container {
    padding: 0.75rem 0;
  }

  .brand-block {
    align-items: flex-start;
  }

  .nav-form {
    padding: 1rem;
  }

  .login-card,
  .login-showcase {
    padding: 1.5rem;
  }

  .nav-actions,
  .form-actions {
    flex-direction: column;
  }

  .nav-btn,
  .btn {
    width: 100%;
  }

  .page-info {
    flex-direction: column;
    align-items: stretch;
  }

  .results-table td,
  .results-table thead th {
    padding-left: 0.7rem;
    padding-right: 0.7rem;
  }
}

@media (max-width: 520px) {
  body {
    font-size: 14px;
  }

  .header-actions {
    width: 100%;
  }

  .logout-btn {
    flex: 1 1 100%;
  }

  .page-link,
  .page-info {
    width: 100%;
  }

  .empty-icon {
    width: 56px;
    height: 56px;
    border-radius: var(--r-md);
    font-size: 1.2rem;
  }

  .no-results {
    padding: 3rem 1.5rem;
  }
}

/* ── Reduced Motion ─────────────────────────────────── */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}