:root {
  --bg: #f8fafc;
  --bg-accent: #f1f5f9;
  --panel: #ffffff;
  --panel-strong: #f8fafc;
  --border: #e2e8f0;
  --border-strong: #cbd5e1;
  --text: #0f172a;
  --text-secondary: #334155;
  --muted: #64748b;
  --brand: #0f172a; 
  --brand-hover: #1e293b;
  --brand-soft: #f1f5f9;
  --ok: #ecfdf5;
  --ok-text: #059669;
  --warn: #fffbeb;
  --warn-text: #d97706;
  --danger: #fef2f2;
  --danger-text: #dc2626;
  --shadow: 0 4px 6px -1px rgb(0 0 0 / 0.05), 0 2px 4px -2px rgb(0 0 0 / 0.05);
  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.05), 0 4px 6px -4px rgb(0 0 0 / 0.05);
  --radius-sm: 6px;
  --radius-md: 8px;
  --radius-lg: 12px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #09090b;
    --bg-accent: #18181b;
    --panel: #18181b;
    --panel-strong: #27272a;
    --border: #27272a;
    --border-strong: #3f3f46;
    --text: #fafafa;
    --text-secondary: #a1a1aa;
    --muted: #71717a;
    --brand: #ffffff;
    --brand-hover: #f4f4f5;
    --brand-soft: #27272a;
    --ok: #064e3b;
    --ok-text: #34d399;
    --warn: #78350f;
    --warn-text: #fbbf24;
    --danger: #7f1d1d;
    --danger-text: #f87171;
    --shadow: 0 4px 6px -1px rgb(0 0 0 / 0.2), 0 2px 4px -2px rgb(0 0 0 / 0.2);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.3), 0 4px 6px -4px rgb(0 0 0 / 0.3);
  }
}

* { box-sizing: border-box; }
.sr-only { position: absolute !important; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; border: 0; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Inter", "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--text); text-decoration: none; transition: color 0.15s ease; }
a:hover { color: var(--muted); }

.shell { max-width: 1200px; margin: 0 auto; padding: 32px 24px; }

/* typography headers */
.topbar h1, .panel h2, .panel h3, .provider-card h3 { margin: 0; font-weight: 600; letter-spacing: -0.015em; color: var(--text); }
.topbar h1 { font-size: 20px; font-weight: 700; }
.panel h2 { font-size: 16px; margin-bottom: 20px; color: var(--text); }
.panel h3 { font-size: 14px; margin-bottom: 12px; }

.subtle { color: var(--muted); font-size: 13px; line-height: 1.6; margin: 4px 0 0; }
.muted { color: var(--muted); font-size: 13px; }
.eyebrow { display: inline-block; margin: 0 0 12px; padding: 4px 10px; background: var(--bg-accent); border-radius: 999px; color: var(--text-secondary); font-size: 11px; font-weight: 600; text-transform: uppercase; letter-spacing: 0.05em; border: 1px solid var(--border); }

/* layout */
.topbar { display: flex; justify-content: space-between; align-items: center; margin-bottom: 24px; }
.brand { display: flex; align-items: center; gap: 14px; }
.brand-mark { display: inline-flex; align-items: center; justify-content: center; width: 44px; height: 44px; border-radius: 14px; background: linear-gradient(135deg, #111827, #334155); box-shadow: var(--shadow); overflow: hidden; }
.brand-mark img { width: 100%; height: 100%; display: block; }
.brand p { margin: 2px 0 0; font-size: 13px; color: var(--muted); }

/* nav */
.nav { display: flex; gap: 4px; margin-bottom: 32px; border-bottom: 1px solid var(--border); padding-bottom: 16px; }
.nav a { padding: 6px 14px; border-radius: var(--radius-md); font-size: 14px; font-weight: 500; color: var(--text-secondary); transition: all 0.2s ease; }
.nav a:hover { background: var(--bg-accent); color: var(--text); }
.nav a.active { background: var(--panel); box-shadow: var(--shadow); color: var(--text); border: 1px solid var(--border); }

/* containers */
.notice, .error, .panel, .provider-card, .table-wrap {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
  padding: 24px;
  margin-bottom: 24px;
}
.notice { border-color: var(--ok-text); background: var(--ok); color: var(--ok-text); }
.error { border-color: var(--danger-text); background: var(--danger); color: var(--danger-text); }

/* hero */
.hero { display: flex; align-items: center; justify-content: space-between; gap: 24px; padding: 24px; background: var(--bg-accent); border: 1px solid var(--border); border-radius: var(--radius-lg); margin-bottom: 24px; box-shadow: none; }
.hero-copy h2 { font-size: 20px; margin: 0 0 8px; border: none; padding: 0; }
.hero-copy p { margin: 0; font-size: 14px; color: var(--text-secondary); }
.hero .actions { margin-left: auto; display: flex; gap: 12px; }

/* grid */
.grid { display: grid; gap: 24px; }
.grid.two { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid.three { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.summary-grid { display: grid; gap: 16px; grid-template-columns: repeat(4, minmax(0, 1fr)); margin-bottom: 24px; }

.summary-card { padding: 20px; background: var(--panel); border: 1px solid var(--border); border-radius: var(--radius-lg); display: flex; flex-direction: column; box-shadow: var(--shadow); }
.summary-card strong { font-size: 20px; font-weight: 600; margin: 8px 0 4px; color: var(--text); }
.summary-label { color: var(--muted); font-size: 12px; text-transform: uppercase; font-weight: 600; letter-spacing: 0.05em; display: flex; justify-content: space-between; align-items: center; }
.summary-card small { font-size: 13px; color: var(--muted); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace; }

/* tables */
.table-wrap { overflow: hidden; padding: 0; border: 1px solid var(--border); }
.table { width: 100%; border-collapse: collapse; font-size: 14px; text-align: left; }
.table th, .table td { padding: 14px 20px; border-bottom: 1px solid var(--border); }
.table th { font-weight: 500; color: var(--muted); background: var(--bg-accent); font-size: 13px; }
.table tr:last-child td { border-bottom: none; }
.table td.actions { padding: 10px 20px; white-space: nowrap; }
.table td.actions form { display: inline-block; margin-right: 8px; }
.table td.actions form:last-child { margin-right: 0; }

/* lists / details */
.details { display: flex; flex-direction: column; gap: 10px; }
.details div { display: flex; justify-content: space-between; align-items: baseline; font-size: 14px; gap: 12px; }
.details dt { color: var(--muted); font-weight: 500; flex-shrink: 0; }
.details dd { margin: 0; font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace; text-align: right; background: var(--bg-accent); padding: 4px 8px; border-radius: var(--radius-sm); border: 1px solid var(--border); word-break: break-all; font-size: 13px; color: var(--text); }

/* cards */
.provider-grid { display: grid; gap: 24px; grid-template-columns: repeat(auto-fill, minmax(420px, 1fr)); }
.provider-card { padding: 24px; display: flex; flex-direction: column; gap: 20px; transition: box-shadow 0.2s ease, border-color 0.2s ease; position: relative; }
.provider-card:hover { border-color: var(--border-strong); box-shadow: var(--shadow-lg); }
.provider-card-active { border-color: var(--ok-text); box-shadow: var(--shadow-lg); }
@media (prefers-color-scheme: dark) { .provider-card-active { border-color: var(--ok-text); } }

.card-head { display: flex; justify-content: space-between; align-items: flex-start; gap: 16px; }
.card-title-row { display: flex; align-items: center; gap: 12px; margin-bottom: 4px; }
.card-head h3 { margin: 0; font-size: 16px; font-weight: 600; }
.card-head p { margin: 0; color: var(--muted); font-family: ui-monospace, SFMono-Regular, Consolas, monospace; font-size: 13px; }

.meta-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 10px; }
.meta-grid div { padding: 10px 14px; background: var(--bg-accent); border-radius: var(--radius-md); font-size: 13px; display: flex; flex-direction: column; gap: 2px; border: 1px solid var(--border); }
.meta-grid dt { color: var(--muted); font-weight: 500; font-size: 12px; }
.meta-grid dd { margin: 0; font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace; color: var(--text); }

.result-box { padding: 14px; border-radius: var(--radius-md); border: 1px dashed var(--border-strong); font-size: 13px; }
.result-box strong { display: block; margin-bottom: 6px; font-weight: 600; color: var(--text-secondary); font-size: 12px; text-transform: uppercase; }
.result-box p { margin: 0; color: var(--text); }
.details-box { margin-top: 10px; }
.details-box summary { cursor: pointer; color: var(--text-secondary); font-weight: 500; }
.details-box summary:hover { color: var(--text); }
.details-box .pre { margin-top: 8px; padding: 12px; background: var(--bg); border-radius: var(--radius-md); border: 1px solid var(--border); font-size: 12px; overflow-x: auto; color: var(--muted); }

/* forms & buttons */
.card-actions { display: flex; gap: 10px; flex-wrap: wrap; margin-top: auto; align-items: center; }
.primary-actions { padding-bottom: 16px; border-bottom: 1px solid var(--border); margin-bottom: 16px; justify-content: space-between; }
.secondary-actions { gap: 8px; }

label { display: flex; flex-direction: column; gap: 8px; font-size: 14px; font-weight: 500; }
input, select, textarea { width: 100%; border: 1px solid var(--border-strong); border-radius: var(--radius-md); padding: 10px 12px; background: var(--panel); color: var(--text); font-family: inherit; font-size: 14px; transition: border-color 0.15s ease, box-shadow 0.15s ease; outline: none; }
input:focus, select:focus, textarea:focus { border-color: var(--text); box-shadow: 0 0 0 1px var(--text); }
input[type="checkbox"], input[type="radio"] { width: auto; padding: 0; margin: 0 8px 0 0; cursor: pointer; display: inline-block; vertical-align: middle; height: auto; outline: none; box-shadow: none; border: none; flex-shrink: 0; }
@media (prefers-color-scheme: dark) { input:focus, select:focus, textarea:focus { border-color: var(--muted); box-shadow: 0 0 0 1px var(--muted); } }

.stack { display: grid; gap: 20px; max-width: 480px; }

.button {
  display: inline-flex; align-items: center; justify-content: center;
  padding: 8px 16px; border-radius: var(--radius-md);
  font-size: 14px; font-weight: 500;
  border: 1px solid var(--brand); cursor: pointer;
  transition: all 0.15s ease; text-decoration: none;
  background: var(--brand); color: var(--bg);
  box-shadow: var(--shadow);
}
@media (prefers-color-scheme: dark) { .button { color: var(--panel); } }
.button:hover { background: var(--brand-hover); border-color: var(--brand-hover); transform: translateY(-1px); box-shadow: var(--shadow-lg); }
.button:active { transform: translateY(0); box-shadow: var(--shadow); }
.button:disabled { opacity: 0.45; cursor: not-allowed; transform: none; box-shadow: none; pointer-events: none; }

.button.secondary { background: var(--panel); color: var(--text); border-color: var(--border-strong); box-shadow: var(--shadow); }
.button.secondary:hover { background: var(--bg-accent); border-color: var(--text-secondary); }

.button.ghost { background: transparent; color: var(--text-secondary); border-color: transparent; box-shadow: none; padding: 6px 12px; }
.button.ghost:hover { background: var(--bg-accent); color: var(--text); }

.button.danger { background: var(--danger); color: var(--danger-text); border-color: var(--danger); }
.button.danger:hover { background: #fecaca; border-color: #fecaca; }
@media (prefers-color-scheme: dark) { .button.danger:hover { background: #991b1b; border-color: #991b1b; } }

.button.ghost-danger { background: transparent; color: var(--danger-text); border-color: transparent; box-shadow: none; padding: 6px 12px; }
.button.ghost-danger:hover { background: var(--danger); }

.button.small { padding: 6px 12px; font-size: 13px; }

.actions { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; }

/* pills and status */
.pill { display: inline-flex; align-items: center; justify-content: center; padding: 4px 10px; border-radius: 999px; font-size: 11px; font-weight: 600; text-transform: uppercase; letter-spacing: 0.05em; background: var(--bg-accent); color: var(--text-secondary); border: 1px solid var(--border); white-space: nowrap; }
.pill.active, .status-ok { background: var(--ok); color: var(--ok-text); border-color: transparent; }
.status-error { background: var(--danger); color: var(--danger-text); border-color: transparent; }
.status-neutral { background: var(--warn); color: var(--warn-text); border-color: transparent; }

.pre, code { font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace; font-size: 0.9em; word-break: break-all; }
dd code, td code, .details code { display: inline-block; padding: 2px 6px; border-radius: 4px; background: var(--bg-accent); border: 1px solid var(--border); color: var(--text); }
.pre { line-height: 1.5; white-space: pre-wrap; margin: 0; }

.token-box { margin-top: 16px; padding: 16px; border-radius: var(--radius-md); background: var(--bg-accent); border: 1px solid var(--border); }
.token-box strong { display: block; margin-bottom: 8px; font-size: 14px; font-weight: 600; }
.token-box code { font-size: 14px; padding: 8px 12px; display: block; background: var(--panel); border: 1px solid var(--border); border-radius: var(--radius-sm); margin-top: 8px;}

/* details summary arrow */
details > summary { list-style: none; user-select: none; display: flex; align-items: center; }
details > summary::-webkit-details-marker { display: none; }
details > summary::before { content: ''; display: inline-block; width: 0; height: 0; border-style: solid; border-width: 4px 0 4px 6px; border-color: transparent transparent transparent var(--muted); margin-right: 8px; transition: transform 0.2s ease; }
details[open] > summary::before { transform: rotate(90deg); }

/* specific elements */
.provider-section { margin-bottom: 40px; }
.section-head { display: flex; justify-content: space-between; align-items: flex-end; margin-bottom: 24px; padding-bottom: 16px; border-bottom: 1px solid var(--border); }
.section-head h2 { margin: 0; font-size: 18px; border: none; padding: 0; }
.section-head .subtle { margin-top: 6px; }
.provider-empty { text-align: center; padding: 48px 24px; color: var(--muted); border: 2px dashed var(--border-strong); border-radius: var(--radius-lg); background: var(--bg-accent); }
.provider-empty h3 { color: var(--text); margin-bottom: 8px; font-size: 16px; }

/* high density provider list */
.provider-list { display: flex; flex-direction: column; gap: 12px; }
.provider-row { display: flex; align-items: center; justify-content: space-between; gap: 16px; padding: 16px 20px; background: var(--panel); border: 1px solid var(--border); border-radius: var(--radius-lg); transition: all 0.2s ease; }
.provider-row:hover { border-color: var(--border-strong); box-shadow: var(--shadow); }
.provider-row-active { border-color: var(--ok-text); box-shadow: var(--shadow); }
@media (prefers-color-scheme: dark) { .provider-row-active { background: rgba(52, 211, 153, 0.05); border-color: var(--ok-text); } }
.row-main { display: flex; flex-direction: column; gap: 8px; flex: 1; min-width: 0; }
.row-header { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; }
.row-title { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.row-header strong { font-size: 15px; font-weight: 600; color: var(--text); margin: 0; }
.row-url { border: none; background: transparent; padding: 0; color: var(--muted); }
.row-meta { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; font-size: 13px; }
.meta-pill { display: inline-flex; align-items: center; padding: 4px 10px; border-radius: 999px; background: var(--bg-accent); border: 1px solid var(--border); color: var(--text-secondary); font-size: 12px; }
.row-result { display: flex; gap: 10px; align-items: baseline; color: var(--text-secondary); font-size: 13px; }
.row-result-label { color: var(--muted); flex-shrink: 0; }
.row-actions { display: flex; align-items: center; gap: 6px; flex-shrink: 0; flex-wrap: wrap; justify-content: flex-end; }
.row-actions form { margin: 0; }
.section-badge { padding: 8px 12px; border-radius: var(--radius-md); background: var(--bg-accent); border: 1px solid var(--border); color: var(--text-secondary); font-size: 13px; }
.section-badge strong { color: var(--text); }
.provider-hero { align-items: flex-end; }
.provider-hero .hero-copy { max-width: 720px; }

.probe-steps { display: grid; gap: 12px; grid-template-columns: repeat(2, minmax(0, 1fr)); margin-bottom: 18px; }
.step-card { display: flex; align-items: center; gap: 14px; padding: 16px; border-radius: var(--radius-lg); border: 1px solid var(--border); background: var(--panel-strong); }
.step-card strong { display: block; margin-bottom: 4px; }
.step-card .subtle { margin: 0; }
.step-card-active { border-color: #d97706; background: linear-gradient(135deg, #fff7ed, #fffbeb); }
.step-card-ready { border-color: var(--ok-text); background: linear-gradient(135deg, #ecfdf5, #f0fdf4); }
.step-no { display: inline-flex; align-items: center; justify-content: center; width: 40px; height: 40px; border-radius: 999px; background: var(--panel); border: 1px solid var(--border); font-size: 12px; font-weight: 700; letter-spacing: 0.08em; color: var(--text-secondary); flex-shrink: 0; }
.modal-shell { position: fixed; inset: 0; z-index: 60; display: flex; align-items: center; justify-content: center; padding: 28px; }
.modal-scrim { position: absolute; inset: 0; background: rgba(15, 23, 42, 0.56); backdrop-filter: blur(4px); }
.modal-card { position: relative; width: min(1040px, 100%); max-height: calc(100vh - 56px); overflow: auto; background: var(--panel); border: 1px solid var(--border); border-radius: 24px; box-shadow: var(--shadow-lg); padding: 24px; }
.modal-head { display: flex; justify-content: space-between; gap: 16px; align-items: flex-start; margin-bottom: 18px; }
.modal-head h2 { margin: 0 0 6px; font-size: 22px; }
.probe-summary { display: grid; gap: 12px; grid-template-columns: repeat(4, minmax(0, 1fr)); margin-bottom: 18px; }
.summary-tile { padding: 14px; border: 1px solid var(--border); border-radius: var(--radius-lg); background: var(--bg-accent); display: flex; flex-direction: column; gap: 8px; }
.summary-tile span { color: var(--muted); font-size: 12px; text-transform: uppercase; letter-spacing: 0.05em; }
.summary-tile code { background: var(--panel); }
.probe-form { display: grid; gap: 14px; margin-bottom: 16px; }
.field-label { font-size: 13px; color: var(--muted); }
.probe-input-row { display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 10px; }
.probe-actions { display: flex; gap: 10px; flex-wrap: wrap; }
.probe-hint { margin-bottom: 18px; padding: 14px 16px; border-radius: var(--radius-lg); background: var(--bg-accent); border: 1px solid var(--border); }
.probe-hint strong { display: block; margin-bottom: 4px; font-size: 13px; }
.probe-hint p { margin: 0; font-size: 13px; color: var(--text-secondary); }
.probe-grid { display: grid; gap: 14px; grid-template-columns: repeat(3, minmax(0, 1fr)); margin-bottom: 18px; }
.probe-result-card { border: 1px solid var(--border); border-radius: var(--radius-lg); padding: 16px; background: var(--panel-strong); }
.probe-result-head { display: flex; justify-content: space-between; gap: 12px; align-items: center; margin-bottom: 8px; }
.probe-result-head h3 { margin: 0; font-size: 15px; }
.probe-result-body { margin-top: 10px; padding: 14px; border-radius: var(--radius-md); border: 1px solid var(--border); background: var(--panel); font-size: 13px; white-space: pre-wrap; word-break: break-word; }
.probe-result-body.status-ok { background: var(--ok); color: var(--ok-text); border-color: transparent; }
.probe-result-body.status-error { background: var(--danger); color: var(--danger-text); border-color: transparent; }
.probe-result-body.status-neutral { background: var(--warn); color: var(--warn-text); border-color: transparent; }
.model-list-panel { border: 1px solid var(--border); border-radius: var(--radius-lg); padding: 16px; background: var(--panel-strong); }
.selected-model-card { display: flex; align-items: center; justify-content: space-between; gap: 16px; padding: 14px 16px; margin-bottom: 14px; border-radius: var(--radius-lg); border: 1px solid var(--border); background: var(--panel); }
.selected-model-card strong { display: block; margin-top: 4px; font-size: 16px; word-break: break-all; }
.selected-model-actions { display: flex; gap: 10px; flex-wrap: wrap; justify-content: flex-end; }
.model-list { display: grid; gap: 10px; max-height: 280px; overflow: auto; }
.model-row { display: flex; gap: 10px; align-items: center; justify-content: space-between; padding: 10px 12px; border-radius: var(--radius-md); border: 1px solid var(--border); background: var(--panel); }
.model-row-selected { border-color: #d97706; background: linear-gradient(135deg, #fff7ed, #ffffff); box-shadow: inset 0 0 0 1px rgba(217, 119, 6, 0.12); }
.model-name { border: none; background: transparent; color: var(--text); font: inherit; padding: 0; cursor: pointer; text-align: left; word-break: break-all; }
.model-name:hover { color: var(--muted); }
.model-actions { display: flex; gap: 8px; flex-wrap: wrap; justify-content: flex-end; }

.form-hero { max-width: 920px; }
.form-panel { max-width: 920px; }
.provider-form { display: grid; gap: 18px; }
.form-grid { display: grid; gap: 16px; }
.form-grid.two { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.form-note-block { display: flex; flex-direction: column; gap: 8px; padding: 12px 14px; border-radius: var(--radius-lg); border: 1px solid var(--border); background: var(--bg-accent); }
.form-note-block .subtle { margin: 0; }
.checkbox-grid { display: grid; gap: 12px; grid-template-columns: repeat(2, minmax(0, 1fr)); }
.checkbox-card { flex-direction: row; align-items: center; gap: 10px; padding: 12px 14px; border-radius: var(--radius-lg); border: 1px solid var(--border); background: var(--bg-accent); font-weight: 400; }
.checkbox-card span { color: var(--text-secondary); }
.form-actions { padding-top: 6px; }

/* Toast Notification */
#toast-container { position: fixed; top: 24px; right: 24px; z-index: 9999; display: flex; flex-direction: column; gap: 12px; pointer-events: none; }
.toast { background: var(--panel); border: 1px solid var(--border); box-shadow: var(--shadow-lg); border-radius: var(--radius-md); padding: 14px 20px; font-size: 14px; font-weight: 500; color: var(--text); display: flex; align-items: flex-start; gap: 10px; max-width: 360px; pointer-events: auto; animation: slideInRight 0.3s cubic-bezier(0.16, 1, 0.3, 1), fadeOut 0.4s cubic-bezier(0.16, 1, 0.3, 1) forwards 3.5s; word-break: break-word; }
.toast.toast-error { border-left: 4px solid var(--danger-text); }
.toast.toast-success { border-left: 4px solid var(--ok-text); }
.toast-icon { font-size: 16px; margin-top: 2px; }
.toast-success .toast-icon { color: var(--ok-text); }
.toast-error .toast-icon { color: var(--danger-text); }
@keyframes slideInRight { from { transform: translateX(120%); opacity: 0; } to { transform: translateX(0); opacity: 1; } }
@keyframes fadeOut { to { opacity: 0; pointer-events: none; transform: translateY(-10px); } }

/* Button Loading */
.button.is-loading { pointer-events: none; opacity: 0.8; position: relative; color: transparent !important; transition: none; }
.button.is-loading::after { content: ""; position: absolute; width: 16px; height: 16px; border: 2px solid rgba(255,255,255,0.3); border-top-color: #fff; border-radius: 50%; animation: spin 0.6s linear infinite; left: calc(50% - 8px); top: calc(50% - 8px); }
.button.ghost.is-loading::after, .button.secondary.is-loading::after, .button.ghost-danger.is-loading::after { border: 2px solid rgba(0,0,0,0.1); border-top-color: var(--text-secondary); }
@media (prefers-color-scheme: dark) { .button.ghost.is-loading::after, .button.secondary.is-loading::after, .button.ghost-danger.is-loading::after { border-color: rgba(255,255,255,0.1); border-top-color: var(--text); } }
@keyframes spin { to { transform: rotate(360deg); } }

@media (max-width: 1024px) {
  .summary-grid, .provider-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .grid.three { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 768px) {
  .grid.two, .grid.three, .summary-grid, .provider-grid { grid-template-columns: 1fr; }
  .hero { flex-direction: column; align-items: flex-start; gap: 16px; text-align: left; }
  .hero .actions { margin-left: 0; width: 100%; }
  .hero .actions .button { flex: 1; }
  .meta-grid { grid-template-columns: 1fr; }
  .table-wrap { display: block; overflow-x: auto; white-space: nowrap; }
  .card-head { flex-direction: column; }
  .card-head .pill { align-self: flex-start; }
  .provider-row { flex-direction: column; align-items: stretch; }
  .row-actions { justify-content: flex-start; }
  .row-result { flex-direction: column; gap: 4px; }
  .modal-shell { padding: 16px; }
  .modal-card { max-height: calc(100vh - 32px); padding: 18px; border-radius: 18px; }
  .modal-head { flex-direction: column; }
  .probe-steps, .probe-summary, .probe-grid, .form-grid.two, .checkbox-grid { grid-template-columns: 1fr; }
  .probe-actions { flex-direction: column; }
  .probe-actions .button { width: 100%; }
  .selected-model-card { flex-direction: column; align-items: stretch; }
  .selected-model-actions { justify-content: stretch; }
  .selected-model-actions .button { width: 100%; }
  .model-row { align-items: flex-start; flex-direction: column; }
  .model-actions { width: 100%; justify-content: stretch; }
  .model-actions .button { width: 100%; }
}