/* ── CSS custom properties (light theme defaults) ── */
:root {
  --color-win:            #16a34a;
  --color-loss:           #dc2626;
  --color-amber:          #d97706;
  --color-accent:         #4f46e5;
  --color-accent-hover:   #6366f1;
  --color-card-bg:        #ffffff;
  --color-page-bg:        #f0f4f8;
  --color-border:         rgba(0,0,0,.15);
  --color-text-1:         #0f172a;
  --color-text-2:         #475569;
  --color-text-3:         #94a3b8;
  --color-topbar-bg:      #ffffff;
  --color-topbar-border:  rgba(0,0,0,.08);
  --color-surface:        rgba(0,0,0,.035);
  --color-surface-border: rgba(0,0,0,.12);
  --color-input-bg:       #ffffff;
  --color-prompt-bg:      #f8fafc;
  --color-prompt-border:  rgba(0,0,0,.1);
  --color-active-border:  #4f46e5;
  --color-active-bg:      rgba(79,70,229,.06);
  --glow-accent:          none;
}

[data-theme="dark"] {
  --color-win:            #22c55e;
  --color-loss:           #ef4444;
  --color-amber:          #f59e0b;
  --color-accent:         #6b7aff;
  --color-accent-hover:   #8b96ff;
  --color-card-bg:        #131820;
  --color-page-bg:        #0b0f14;
  --color-border:         rgba(255,255,255,.07);
  --color-text-1:         #e8eeff;
  --color-text-2:         #7a87aa;
  --color-text-3:         #3d4660;
  --color-topbar-bg:      #0d1117;
  --color-topbar-border:  rgba(255,255,255,.06);
  --color-surface:        rgba(255,255,255,.03);
  --color-surface-border: rgba(255,255,255,.06);
  --color-input-bg:       #0d1117;
  --color-prompt-bg:      #0d1117;
  --color-prompt-border:  rgba(255,255,255,.07);
  --color-active-border:  #6b7aff;
  --color-active-bg:      rgba(107,122,255,.08);
  --glow-accent:          0 0 16px rgba(107,122,255,.3);
}

body {
  padding: 0;
  min-height: 100vh;
  background: var(--color-page-bg);
}

#page-content {
  max-width: 1040px;
  margin-inline: auto;
}

/* ── Top bar ── */
header.top-bar {
  max-width: none;
  margin: 0;
  flex-wrap: nowrap;
  gap: 0;
  display: flex;
  align-items: center;
  padding: 1rem 1.25rem .75rem;
  background: var(--color-topbar-bg);
  border-bottom: 1px solid var(--color-topbar-border);
}

.top-bar-brand {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: .1rem;
}

.top-bar-title {
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--color-text-1);
  letter-spacing: -.02em;
  line-height: 1.2;
}

.top-bar-subtitle {
  font-size: .78rem;
  color: var(--color-text-3);
  font-weight: 500;
}

.top-bar-actions {
  display: flex;
  align-items: center;
  gap: .5rem;
  padding-left: .75rem;
  flex-shrink: 0;
}

/* ── Nav link ── */
.btn-nav-link {
  font-size: .78rem;
  font-weight: 600;
  color: var(--color-text-2);
  text-decoration: none;
  padding: .25rem .55rem;
  border: 1px solid var(--color-border);
  border-radius: 6px;
  transition: color .15s, background .15s;
  white-space: nowrap;
}
.btn-nav-link:hover { color: var(--color-text-1); background: var(--color-surface); }

/* ── Theme toggle ── */
#theme-toggle {
  background: none;
  border: none;
  cursor: pointer;
  padding: .2rem;
  color: var(--color-text-1);
  opacity: .5;
  transition: opacity .15s;
  line-height: 0;
  margin-right: .1rem;
}
#theme-toggle svg       { width: 1.25rem; height: 1.25rem; display: block; pointer-events: none; }
#theme-toggle:hover     { opacity: 1; }
#theme-toggle:focus-visible { outline: 2px solid var(--color-accent); outline-offset: 3px; border-radius: 4px; opacity: 1; }
#theme-toggle .icon-sun  { display: none; }
#theme-toggle .icon-moon { display: block; }
[data-theme="dark"] #theme-toggle .icon-sun  { display: block; }
[data-theme="dark"] #theme-toggle .icon-moon { display: none; }

/* ── Error banner ── */
#error-banner {
  margin: .75rem 1.25rem;
  font-size: .85rem;
  color: var(--color-loss);
  display: none;
}

/* ── Shared section layout ── */
#library-section,
#preview-section,
#compare-section {
  padding: 1.25rem 1.5rem;
}

/* ── Section label ── */
.section-label {
  font-size: .75rem;
  font-weight: 700;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--color-text-3);
  margin-bottom: .85rem;
}

.section-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: .5rem;
  margin-bottom: .85rem;
}
.section-row .section-label { margin-bottom: 0; }

/* ── Profile grid ── */
#profile-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: .85rem;
}

.empty {
  font-size: .9rem;
  color: var(--color-text-3);
  padding: 1rem 0;
}

/* ── Profile card ── */
.profile-card {
  background: var(--color-card-bg);
  border: 1px solid var(--color-border);
  border-radius: 12px;
  padding: 1rem 1.1rem;
  display: flex;
  flex-direction: column;
  gap: .55rem;
  transition: border-color .15s, box-shadow .15s, background .15s;
}

.profile-card.is-active {
  border-color: var(--color-active-border);
  background: var(--color-active-bg);
  box-shadow: var(--glow-accent);
}

.profile-card.is-previewing {
  border-color: var(--color-accent);
  box-shadow: 0 0 0 2px rgba(79,70,229,.2);
}
[data-theme="dark"] .profile-card.is-previewing {
  box-shadow: 0 0 0 2px rgba(107,122,255,.25);
}

[data-theme="dark"] .profile-card { box-shadow: 0 2px 8px rgba(0,0,0,.3); }
[data-theme="dark"] .profile-card.is-active { box-shadow: var(--glow-accent); }

/* ── Card top row ── */
.card-top-row {
  display: flex;
  align-items: center;
  gap: .4rem;
  flex-wrap: wrap;
}

.strategy-badge {
  font-size: .7rem;
  font-weight: 700;
  padding: .15rem .45rem;
  border-radius: 5px;
  background: rgba(79,70,229,.1);
  color: var(--color-accent);
  letter-spacing: .03em;
  text-transform: uppercase;
}
[data-theme="dark"] .strategy-badge { background: rgba(107,122,255,.15); }

.active-indicator {
  font-size: .7rem;
  font-weight: 700;
  padding: .15rem .45rem;
  border-radius: 5px;
  background: rgba(22,163,74,.1);
  color: var(--color-win);
  letter-spacing: .03em;
  text-transform: uppercase;
}
[data-theme="dark"] .active-indicator { background: rgba(34,197,94,.15); }

.version-badge {
  font-size: .68rem;
  font-weight: 600;
  color: var(--color-text-3);
  font-family: ui-monospace, monospace;
  margin-left: auto;
  white-space: nowrap;
}

/* ── Card body ── */
.card-name {
  font-size: .95rem;
  font-weight: 700;
  color: var(--color-text-1);
  letter-spacing: -.01em;
  line-height: 1.3;
}

.card-description {
  font-size: .82rem;
  color: var(--color-text-2);
  line-height: 1.5;
}

/* ── Card tags ── */
.card-tags {
  display: flex;
  flex-wrap: wrap;
  gap: .3rem;
}

.tag {
  font-size: .68rem;
  font-weight: 600;
  padding: .12rem .4rem;
  border-radius: 4px;
  background: var(--color-surface);
  border: 1px solid var(--color-surface-border);
  color: var(--color-text-2);
  white-space: nowrap;
}

/* ── Card actions ── */
.card-actions {
  display: flex;
  align-items: center;
  gap: .5rem;
  margin-top: .2rem;
}

.preview-btn {
  font: inherit;
  font-size: .75rem;
  font-weight: 600;
  padding: .25rem .65rem;
  border-radius: 6px;
  cursor: pointer;
  transition: background .15s, color .15s;
  background: none;
  border: 1px solid var(--color-border);
  color: var(--color-text-2);
  white-space: nowrap;
}
.preview-btn:hover { background: var(--color-surface); color: var(--color-text-1); }

.set-active-btn {
  font: inherit;
  font-size: .75rem;
  font-weight: 600;
  padding: .25rem .65rem;
  border-radius: 6px;
  cursor: pointer;
  transition: background .15s, color .15s, border-color .15s;
  background: none;
  border: 1px solid var(--color-accent);
  color: var(--color-accent);
  white-space: nowrap;
}
.set-active-btn:hover:not(:disabled) { background: var(--color-accent); color: #fff; }
.set-active-btn.is-active {
  background: var(--color-accent);
  color: #fff;
  border-color: var(--color-accent);
  cursor: default;
}

/* ── Round toggle ── */
.round-toggle {
  display: flex;
  gap: 2px;
  background: var(--color-surface);
  border: 1px solid var(--color-surface-border);
  border-radius: 8px;
  padding: 3px;
}

.round-btn {
  font: inherit;
  font-size: .75rem;
  font-weight: 600;
  padding: .25rem .65rem;
  border-radius: 6px;
  border: none;
  cursor: pointer;
  background: none;
  color: var(--color-text-2);
  transition: background .15s, color .15s;
  white-space: nowrap;
}

.round-btn:hover { color: var(--color-text-1); }
.round-btn.active {
  background: var(--color-card-bg);
  color: var(--color-text-1);
  font-weight: 700;
  box-shadow: 0 1px 3px rgba(0,0,0,.12);
}

[data-theme="dark"] .round-btn.active { box-shadow: 0 1px 3px rgba(0,0,0,.4); }

/* ── Preview label ── */
.preview-label {
  font-size: .82rem;
  color: var(--color-text-2);
  margin-bottom: .5rem;
  font-weight: 600;
}

/* ── Prompt block ── */
.prompt-block {
  font-family: ui-monospace, "Cascadia Code", "SF Mono", Menlo, Monaco, Consolas, monospace;
  font-size: .76rem;
  line-height: 1.65;
  background: var(--color-prompt-bg);
  border: 1px solid var(--color-prompt-border);
  border-radius: 8px;
  padding: .9rem 1rem;
  white-space: pre-wrap;
  word-break: break-word;
  overflow-y: auto;
  max-height: 480px;
  color: var(--color-text-1);
  tab-size: 2;
}

.prompt-block.muted { color: var(--color-text-3); font-style: italic; }

/* ── Compare grid ── */
.compare-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  align-items: start;
}

.compare-col {
  display: flex;
  flex-direction: column;
  gap: .5rem;
  min-width: 0;
}

/* ── Compare select ── */
.compare-select {
  font: inherit;
  font-size: .82rem;
  width: 100%;
  padding: .35rem .55rem;
  border-radius: 7px;
  border: 1px solid var(--color-border);
  background: var(--color-input-bg);
  color: var(--color-text-1);
  cursor: pointer;
  transition: border-color .15s;
}
.compare-select:focus { outline: 2px solid var(--color-accent); outline-offset: 1px; border-color: transparent; }

.compare-block {
  max-height: 560px;
}

/* ── Responsive ── */
@media (max-width: 680px) {
  .compare-grid { grid-template-columns: 1fr; }
  .prompt-block { max-height: 300px; }
  .compare-block { max-height: 300px; }
}