/* ============================================================
   Buyer Accounts Dashboard — Stylesheet
   ============================================================ */

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --sidebar-w: 240px;
  --sidebar-bg: #0f172a;
  --sidebar-text: #94a3b8;
  --sidebar-active: #3b82f6;
  --sidebar-hover: #1e293b;
  --content-bg: #f1f5f9;
  --card-bg: #ffffff;
  --border: #e2e8f0;
  --text-primary: #0f172a;
  --text-secondary: #64748b;
  --text-muted: #94a3b8;
  --primary: #3b82f6;
  --primary-dark: #2563eb;
  --success: #22c55e;
  --warning: #f59e0b;
  --danger: #ef4444;
  --orange: #f97316;
  --purple: #a855f7;
  --radius: 8px;
  --shadow: 0 1px 3px rgba(0,0,0,.08), 0 1px 2px rgba(0,0,0,.06);
  --shadow-md: 0 4px 6px rgba(0,0,0,.07), 0 2px 4px rgba(0,0,0,.06);
}

body { font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif; font-size: 14px; color: var(--text-primary); line-height: 1.5; }

a { color: var(--primary); text-decoration: none; }
a:hover { text-decoration: underline; }

/* ── Login / Setup ────────────────────────────────────────── */

.login-body { background: var(--content-bg); display: flex; align-items: center; justify-content: center; min-height: 100vh; }

.login-wrap { width: 100%; max-width: 400px; padding: 1rem; }

.login-card { background: var(--card-bg); border-radius: var(--radius); box-shadow: var(--shadow-md); padding: 2rem; }

.login-logo { display: flex; align-items: center; gap: .625rem; margin-bottom: 1.5rem; font-weight: 700; font-size: 1rem; color: var(--text-primary); }

.login-card h1 { font-size: 1.25rem; font-weight: 700; margin-bottom: 1.5rem; color: var(--text-primary); }

.login-hint { margin-top: 1.25rem; font-size: .8125rem; color: var(--text-secondary); text-align: center; }

/* ── App shell ────────────────────────────────────────────── */

.app-body { background: var(--content-bg); }

#app { display: flex; min-height: 100vh; }

.app-loading { display: flex; align-items: center; justify-content: center; flex: 1; }

/* ── Sidebar ──────────────────────────────────────────────── */

.sidebar { width: var(--sidebar-w); background: var(--sidebar-bg); min-height: 100vh; display: flex; flex-direction: column; flex-shrink: 0; position: fixed; top: 0; left: 0; bottom: 0; z-index: 100; overflow-y: auto; }

.sidebar-logo { display: flex; align-items: center; gap: .625rem; padding: 1.25rem 1rem; border-bottom: 1px solid #1e293b; color: #f8fafc; font-weight: 700; font-size: .9375rem; }

.sidebar-logo svg { flex-shrink: 0; }

.sidebar-nav { flex: 1; padding: .5rem 0; }

.nav-section { padding: 1rem 1rem .25rem; font-size: .6875rem; font-weight: 600; text-transform: uppercase; letter-spacing: .06em; color: #475569; }

.nav-item { display: flex; align-items: center; gap: .625rem; padding: .5rem 1rem; color: var(--sidebar-text); cursor: pointer; border-radius: 0; transition: background .15s, color .15s; font-size: .875rem; border: none; background: none; width: 100%; text-align: left; }

.nav-item:hover { background: var(--sidebar-hover); color: #e2e8f0; }

.nav-item.active { background: #1e3a5f; color: #93c5fd; }

.nav-item svg { flex-shrink: 0; opacity: .7; }

.nav-item.active svg { opacity: 1; }

.sidebar-footer { padding: .75rem 1rem; border-top: 1px solid #1e293b; }

.sidebar-user { display: flex; align-items: center; gap: .625rem; color: var(--sidebar-text); font-size: .8125rem; }

.avatar { width: 28px; height: 28px; border-radius: 50%; background: #1e3a5f; color: #93c5fd; display: flex; align-items: center; justify-content: center; font-weight: 700; font-size: .75rem; flex-shrink: 0; }

.sidebar-user-info { flex: 1; min-width: 0; }
.sidebar-user-name { font-weight: 600; color: #e2e8f0; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.sidebar-user-role { font-size: .75rem; color: #64748b; text-transform: capitalize; }

.btn-logout { background: none; border: none; color: #64748b; cursor: pointer; padding: .25rem; border-radius: 4px; display: flex; align-items: center; }
.btn-logout:hover { color: #ef4444; }

/* ── Main content ─────────────────────────────────────────── */

.main { margin-left: var(--sidebar-w); flex: 1; display: flex; flex-direction: column; min-height: 100vh; }

.content { flex: 1; padding: 1.5rem 2rem; max-width: 1400px; width: 100%; }

/* ── Page header ──────────────────────────────────────────── */

.page-header { display: flex; align-items: center; justify-content: space-between; margin-bottom: 1.5rem; flex-wrap: wrap; gap: .75rem; }

.page-title { font-size: 1.375rem; font-weight: 700; color: var(--text-primary); }

.page-subtitle { font-size: .875rem; color: var(--text-secondary); margin-top: .125rem; }

/* ── Cards ────────────────────────────────────────────────── */

.card { background: var(--card-bg); border-radius: var(--radius); box-shadow: var(--shadow); border: 1px solid var(--border); }

.card-header { display: flex; align-items: center; justify-content: space-between; padding: 1rem 1.25rem; border-bottom: 1px solid var(--border); }

.card-title { font-weight: 600; font-size: .9375rem; }

.card-body { padding: 1.25rem; }

.mt-4 { margin-top: 1rem; }
.mt-6 { margin-top: 1.5rem; }

/* ── Stat grid ────────────────────────────────────────────── */

.stats-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(170px, 1fr)); gap: 1rem; margin-bottom: 1.5rem; }

.stat-card { background: var(--card-bg); border-radius: var(--radius); box-shadow: var(--shadow); border: 1px solid var(--border); padding: 1.125rem 1.25rem; }

.stat-label { font-size: .75rem; font-weight: 600; text-transform: uppercase; letter-spacing: .04em; color: var(--text-secondary); margin-bottom: .375rem; }

.stat-value { font-size: 1.75rem; font-weight: 700; color: var(--text-primary); line-height: 1; }

.stat-card.success .stat-value { color: #16a34a; }
.stat-card.warning .stat-value { color: #d97706; }
.stat-card.danger  .stat-value { color: #dc2626; }
.stat-card.info    .stat-value { color: var(--primary); }

/* ── Toolbar ──────────────────────────────────────────────── */

.toolbar { display: flex; gap: .75rem; align-items: center; padding: .875rem 1.25rem; border-bottom: 1px solid var(--border); flex-wrap: wrap; }

.toolbar-search { position: relative; flex: 1; min-width: 200px; max-width: 320px; }

.toolbar-search input { width: 100%; padding: .4375rem .75rem .4375rem 2rem; border: 1px solid var(--border); border-radius: 6px; font-size: .875rem; background: var(--content-bg); outline: none; transition: border-color .15s; }

.toolbar-search input:focus { border-color: var(--primary); background: #fff; }

.toolbar-search::before { content: ''; position: absolute; left: .625rem; top: 50%; transform: translateY(-50%); width: 14px; height: 14px; background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='14' height='14' fill='none' viewBox='0 0 24 24' stroke='%2394a3b8' stroke-width='2'%3E%3Ccircle cx='11' cy='11' r='8'/%3E%3Cpath d='m21 21-4.35-4.35'/%3E%3C/svg%3E") center/contain no-repeat; }

.toolbar select { padding: .4375rem .625rem; border: 1px solid var(--border); border-radius: 6px; font-size: .875rem; background: var(--content-bg); color: var(--text-primary); outline: none; cursor: pointer; }

.toolbar-gap { flex: 1; }

/* ── Table ────────────────────────────────────────────────── */

.table-wrap { overflow-x: auto; }

table { width: 100%; border-collapse: collapse; }

th { text-align: left; padding: .625rem 1rem; font-size: .75rem; font-weight: 600; text-transform: uppercase; letter-spacing: .04em; color: var(--text-secondary); border-bottom: 1px solid var(--border); white-space: nowrap; }

td { padding: .75rem 1rem; border-bottom: 1px solid var(--border); font-size: .875rem; vertical-align: middle; }

tr:last-child td { border-bottom: none; }

tbody tr:hover { background: #f8fafc; }

.td-actions { display: flex; gap: .375rem; align-items: center; }

.empty-state { padding: 3rem 1rem; text-align: center; color: var(--text-muted); }
.empty-state-icon { font-size: 2rem; margin-bottom: .5rem; }
.empty-state p { font-size: .875rem; }

/* ── Badges ───────────────────────────────────────────────── */

.badge { display: inline-flex; align-items: center; padding: .1875rem .5rem; border-radius: 99px; font-size: .6875rem; font-weight: 600; letter-spacing: .02em; white-space: nowrap; }

.badge-green   { background: #dcfce7; color: #15803d; }
.badge-blue    { background: #dbeafe; color: #1d4ed8; }
.badge-amber   { background: #fef3c7; color: #b45309; }
.badge-red     { background: #fee2e2; color: #b91c1c; }
.badge-orange  { background: #ffedd5; color: #c2410c; }
.badge-purple  { background: #f3e8ff; color: #7e22ce; }
.badge-gray    { background: #f1f5f9; color: #475569; }

/* ── Buttons ──────────────────────────────────────────────── */

.btn { display: inline-flex; align-items: center; gap: .375rem; padding: .4375rem .875rem; border-radius: 6px; font-size: .875rem; font-weight: 500; cursor: pointer; border: 1px solid transparent; transition: background .15s, border-color .15s, opacity .15s; line-height: 1.4; white-space: nowrap; }

.btn:disabled { opacity: .55; cursor: not-allowed; }

.btn-primary  { background: var(--primary); color: #fff; border-color: var(--primary); }
.btn-primary:hover:not(:disabled)  { background: var(--primary-dark); }

.btn-secondary { background: #fff; color: var(--text-primary); border-color: var(--border); }
.btn-secondary:hover:not(:disabled) { background: #f8fafc; }

.btn-danger   { background: #fff; color: var(--danger); border-color: #fca5a5; }
.btn-danger:hover:not(:disabled)   { background: #fff1f2; }

.btn-ghost    { background: none; border-color: transparent; color: var(--text-secondary); }
.btn-ghost:hover:not(:disabled)    { background: var(--content-bg); }

.btn-sm  { padding: .25rem .625rem; font-size: .8125rem; }
.btn-full { width: 100%; justify-content: center; }

.btn-icon { padding: .375rem; border-radius: 6px; }

/* ── Forms ────────────────────────────────────────────────── */

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

.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }

label { display: block; font-size: .8125rem; font-weight: 500; color: var(--text-primary); margin-bottom: .375rem; }

.label-required::after { content: ' *'; color: var(--danger); }

input[type=text], input[type=email], input[type=password], input[type=date], input[type=url], input[type=number], select, textarea {
  display: block; width: 100%; padding: .4375rem .75rem;
  border: 1px solid var(--border); border-radius: 6px; font-size: .875rem;
  color: var(--text-primary); background: #fff; outline: none;
  transition: border-color .15s; font-family: inherit;
}

input:focus, select:focus, textarea:focus { border-color: var(--primary); box-shadow: 0 0 0 3px rgba(59,130,246,.1); }

textarea { resize: vertical; min-height: 80px; }

.form-hint { font-size: .75rem; color: var(--text-muted); margin-top: .25rem; }

.form-section { margin-bottom: 1.25rem; }
.form-section-title { font-size: .75rem; font-weight: 600; text-transform: uppercase; letter-spacing: .05em; color: var(--text-secondary); margin-bottom: .75rem; padding-bottom: .375rem; border-bottom: 1px solid var(--border); }

/* Sensitive field */
.sensitive-wrap { position: relative; }
.sensitive-wrap input { padding-right: 2.5rem; }
.btn-reveal { position: absolute; right: .5rem; top: 50%; transform: translateY(-50%); background: none; border: none; cursor: pointer; color: var(--text-muted); padding: .25rem; }
.btn-reveal:hover { color: var(--text-primary); }

/* ── Alerts ───────────────────────────────────────────────── */

.alert { padding: .625rem .875rem; border-radius: 6px; font-size: .875rem; margin-bottom: 1rem; }
.alert-error   { background: #fff1f2; color: #b91c1c; border: 1px solid #fca5a5; }
.alert-success { background: #f0fdf4; color: #15803d; border: 1px solid #86efac; }
.alert-warning { background: #fffbeb; color: #b45309; border: 1px solid #fcd34d; }
.alert-info    { background: #eff6ff; color: #1d4ed8; border: 1px solid #93c5fd; }

/* ── Modal ────────────────────────────────────────────────── */

.modal-overlay { position: fixed; inset: 0; background: rgba(0,0,0,.45); z-index: 1000; display: flex; align-items: center; justify-content: center; padding: 1rem; }

.modal-box { background: var(--card-bg); border-radius: var(--radius); box-shadow: 0 20px 60px rgba(0,0,0,.2); width: 100%; max-width: 560px; max-height: 90vh; display: flex; flex-direction: column; }

.modal-box.modal-lg { max-width: 720px; }

.modal-header { display: flex; align-items: center; justify-content: space-between; padding: 1.125rem 1.5rem; border-bottom: 1px solid var(--border); flex-shrink: 0; }

.modal-title { font-size: 1rem; font-weight: 700; }

.modal-close { background: none; border: none; font-size: 1.375rem; line-height: 1; cursor: pointer; color: var(--text-muted); padding: 0; width: 28px; height: 28px; display: flex; align-items: center; justify-content: center; border-radius: 4px; }

.modal-close:hover { background: var(--content-bg); color: var(--text-primary); }

.modal-body { padding: 1.5rem; overflow-y: auto; flex: 1; }

.modal-footer { padding: 1rem 1.5rem; border-top: 1px solid var(--border); display: flex; gap: .625rem; justify-content: flex-end; flex-shrink: 0; }

/* ── Toast ────────────────────────────────────────────────── */

.toast-container { position: fixed; bottom: 1.5rem; right: 1.5rem; z-index: 2000; display: flex; flex-direction: column; gap: .5rem; }

.toast { padding: .75rem 1rem; border-radius: var(--radius); box-shadow: var(--shadow-md); font-size: .875rem; font-weight: 500; min-width: 220px; max-width: 360px; animation: toastIn .2s ease; }

.toast-success { background: #15803d; color: #fff; }
.toast-error   { background: #b91c1c; color: #fff; }
.toast-info    { background: #1d4ed8; color: #fff; }

@keyframes toastIn { from { opacity:0; transform:translateY(8px); } to { opacity:1; transform:none; } }

/* ── Detail page ──────────────────────────────────────────── */

.detail-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 1.25rem; }
.detail-grid-wide { grid-column: 1/-1; }

.detail-field { margin-bottom: .875rem; }
.detail-field-label { font-size: .75rem; font-weight: 600; text-transform: uppercase; letter-spacing: .04em; color: var(--text-muted); margin-bottom: .2rem; }
.detail-field-value { font-size: .9375rem; color: var(--text-primary); word-break: break-word; }
.detail-field-value.muted { color: var(--text-muted); font-style: italic; }

.tabs { display: flex; border-bottom: 1px solid var(--border); margin-bottom: 1.25rem; gap: 0; overflow-x: auto; }
.tab-btn { padding: .625rem 1rem; font-size: .875rem; font-weight: 500; color: var(--text-secondary); border: none; background: none; cursor: pointer; border-bottom: 2px solid transparent; margin-bottom: -1px; white-space: nowrap; }
.tab-btn.active { color: var(--primary); border-bottom-color: var(--primary); }
.tab-btn:hover { color: var(--text-primary); }

.tab-panel { display: none; }
.tab-panel.active { display: block; }

/* ── Pairing checker ──────────────────────────────────────── */

.checker-result { border-radius: var(--radius); padding: 1.25rem 1.5rem; margin-top: 1.25rem; }
.checker-result.available { background: #f0fdf4; border: 1px solid #86efac; }
.checker-result.warning   { background: #fffbeb; border: 1px solid #fcd34d; }
.checker-result.blocked   { background: #fff1f2; border: 1px solid #fca5a5; }

.checker-result-title { font-size: 1.125rem; font-weight: 700; margin-bottom: .375rem; }
.checker-result.available .checker-result-title { color: #15803d; }
.checker-result.warning   .checker-result-title { color: #b45309; }
.checker-result.blocked   .checker-result-title { color: #b91c1c; }

.checker-reasons { margin-top: .75rem; display: flex; flex-direction: column; gap: .375rem; }
.checker-reason { font-size: .875rem; padding: .375rem .625rem; border-radius: 6px; }
.checker-reason.block-item { background: #fee2e2; color: #7f1d1d; }
.checker-reason.warn-item  { background: #fef3c7; color: #78350f; }

/* ── Spinner ──────────────────────────────────────────────── */

.spinner { width: 36px; height: 36px; border: 3px solid var(--border); border-top-color: var(--primary); border-radius: 50%; animation: spin .7s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }

.loading-row td { text-align: center; padding: 2rem; color: var(--text-muted); }

/* ── Settings toggles ─────────────────────────────────────── */

.setting-row { display: flex; align-items: center; justify-content: space-between; padding: .875rem 0; border-bottom: 1px solid var(--border); gap: 1rem; }
.setting-row:last-child { border-bottom: none; }
.setting-label { font-size: .875rem; color: var(--text-primary); flex: 1; }

.toggle { position: relative; width: 40px; height: 22px; flex-shrink: 0; }
.toggle input { opacity: 0; width: 0; height: 0; }
.toggle-slider { position: absolute; inset: 0; background: #cbd5e1; border-radius: 99px; cursor: pointer; transition: background .2s; }
.toggle-slider::before { content:''; position:absolute; width:16px; height:16px; border-radius:50%; background:#fff; left:3px; bottom:3px; transition: transform .2s; box-shadow: 0 1px 3px rgba(0,0,0,.2); }
.toggle input:checked + .toggle-slider { background: var(--primary); }
.toggle input:checked + .toggle-slider::before { transform: translateX(18px); }

/* ── Breadcrumb ───────────────────────────────────────────── */

.breadcrumb { display: flex; align-items: center; gap: .375rem; font-size: .8125rem; color: var(--text-secondary); margin-bottom: 1rem; }
.breadcrumb a { color: var(--primary); }
.breadcrumb-sep { color: var(--text-muted); }

/* ── Utility ──────────────────────────────────────────────── */

.text-muted   { color: var(--text-muted); }
.text-sm      { font-size: .8125rem; }
.font-mono    { font-family: monospace; }
.truncate     { overflow: hidden; white-space: nowrap; text-overflow: ellipsis; }
.flex         { display: flex; }
.items-center { align-items: center; }
.gap-2        { gap: .5rem; }
.gap-3        { gap: .75rem; }
.justify-between { justify-content: space-between; }
.w-full       { width: 100%; }
.mt-2         { margin-top: .5rem; }
.mb-4         { margin-bottom: 1rem; }
.p-4          { padding: 1rem; }

/* ── Responsive ───────────────────────────────────────────── */

@media (max-width: 768px) {
  .sidebar { width: 100%; min-height: auto; position: relative; }
  .main { margin-left: 0; }
  .content { padding: 1rem; }
  .form-row { grid-template-columns: 1fr; }
  .detail-grid { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
}