/* The Professional skin: no characters, a neutral slate palette and quiet, flat surfaces.
   Everything here applies only while <html data-skin="professional">; docs/SKINS.md lists every slot.
   The graphics are generated by concept-art/professional-skin/build.mjs. */

:where(:root[data-skin="professional"]) {
  --bg: #f5f6f8;
  --surface: #ffffff;
  --surface-2: #f2f4f7;
  --border: #e2e5ea;
  --text: #1a1f2b;
  --muted: #5f6877;
  --heading: #111827;
  --accent: #2563eb;
  --accent-fill: #2563eb;
  --accent-text: #ffffff;
  --danger: #c0362c;
  --ok: #16794a;
  --warn: #a15c07;
  --gold: #94a3b8;
  --gold-ink: #475569;
  --focus: #2563eb;
  --shadow: 0 1px 2px rgba(16, 24, 40, 0.05), 0 1px 3px rgba(16, 24, 40, 0.04);
  --radius: 8px;
  --font-display: "Segoe UI Variable Display", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;

  --page-art: url("page-light.svg");
  --empty-art: url("ui/empty-state-light.svg");
  --art-bg: linear-gradient(160deg, color-mix(in srgb, var(--pc) 13%, #fff), color-mix(in srgb, var(--pc) 4%, #fff));
  --art-locked-bg: linear-gradient(160deg, #eef0f3, #f7f8fa);
  --card-hover-shadow: 0 2px 4px rgba(16, 24, 40, 0.04), 0 8px 20px rgba(16, 24, 40, 0.07);
  --dialog-shadow: 0 24px 48px -12px rgba(16, 24, 40, 0.22);
  --meter-2: #3b82f6;

  body::before {
    content: ""; position: fixed; inset: 0; z-index: -1; pointer-events: none;
    background: var(--page-art) center top / max(100%, 1600px) auto no-repeat;
  }
  .topbar { background: color-mix(in srgb, var(--surface) 86%, transparent); backdrop-filter: blur(8px); }
  h2 { font-weight: 600; letter-spacing: -0.005em; }
  .section-head { padding-bottom: 9px; border-bottom: 1px solid var(--border); }

  .provider, .session-card {
    --pc: #7c6cf0;
    --idle: url("banners/shell/idle.svg");
    --working: url("banners/shell/working.svg");
    --locked: url("banners/shell/locked.svg");
    --mark: url("icons/shell.svg");
  }
  .provider[data-id="anthropic"], .session-card[data-provider="anthropic"] {
    --pc: #d97757;
    --idle: url("banners/anthropic/idle.svg");
    --working: url("banners/anthropic/working.svg");
    --locked: url("banners/anthropic/locked.svg");
    --mark: url("icons/anthropic.svg");
  }
  .provider[data-id="openai"], .session-card[data-provider="openai"] {
    --pc: #10a37f;
    --idle: url("banners/openai/idle.svg");
    --working: url("banners/openai/working.svg");
    --locked: url("banners/openai/locked.svg");
    --mark: url("icons/openai.svg");
  }
  .provider[data-id="google"], .session-card[data-provider="google"] {
    --pc: #4285f4;
    --idle: url("banners/google/idle.svg");
    --working: url("banners/google/working.svg");
    --locked: url("banners/google/locked.svg");
    --mark: url("icons/google.svg");
  }
  .provider[data-id="xai"], .session-card[data-provider="xai"] {
    --pc: #14b8c4;
    --idle: url("banners/xai/idle.svg");
    --working: url("banners/xai/working.svg");
    --locked: url("banners/xai/locked.svg");
    --mark: url("icons/xai.svg");
  }

  .provider-icon[data-provider="anthropic"] { --icon: url("icons/anthropic.svg"); }
  .provider-icon[data-provider="openai"] { --icon: url("icons/openai.svg"); }
  .provider-icon[data-provider="google"] { --icon: url("icons/google.svg"); }
  .provider-icon[data-provider="xai"] { --icon: url("icons/xai.svg"); }
  .provider-icon[data-provider="shell"] { --icon: url("icons/shell.svg"); }
  .provider-icon:not(.has-image)[data-provider="anthropic"],
  .provider-icon:not(.has-image)[data-provider="openai"],
  .provider-icon:not(.has-image)[data-provider="google"],
  .provider-icon:not(.has-image)[data-provider="xai"],
  .provider-icon:not(.has-image)[data-provider="shell"] {
    background: var(--icon) center / cover no-repeat; color: transparent; border-radius: 10px;
  }

  .provider, .session-card {
    position: relative; isolation: isolate; overflow: hidden;
    border-radius: 10px; padding: 16px;
    transition: border-color 0.2s, box-shadow 0.2s;
  }
  .provider:hover, .session-card:hover {
    border-color: color-mix(in srgb, var(--pc) 38%, var(--border));
    box-shadow: var(--card-hover-shadow);
  }
  .card-art {
    position: absolute; z-index: -1; overflow: hidden; pointer-events: none;
    background: var(--art-bg);
  }
  .card-art::before { content: ""; position: absolute; inset: 0; background: var(--idle) center / cover no-repeat; }

  .provider { padding-top: 90px; }
  .provider .card-art { inset: 0 0 auto 0; height: 72px; border-bottom: 1px solid var(--border); }
  .provider.unavailable .card-art { background: var(--art-locked-bg); }
  .provider.unavailable .card-art::before { background-image: var(--locked); }
  .provider.unavailable::after {
    content: ""; position: absolute; inset: 0; pointer-events: none;
    background: url("ui/lock.svg") right 10px top 10px / 24px 24px no-repeat;
  }

  .session-card { min-height: 164px; padding-left: 108px; }
  .session-card .card-art, .session-card .card-aura { inset: 0 auto 0 0; width: 92px; }
  .session-card .card-art { border-right: 1px solid var(--border); }
  .session-card .card-art::before, .session-card .card-art::after {
    background: var(--mark) center 16px / 40px 40px no-repeat, var(--idle) center / cover no-repeat;
  }
  .session-card .card-art::after {
    content: ""; position: absolute; inset: 0; background-image: var(--mark), var(--working);
    opacity: 0; transition: opacity 0.5s var(--ease);
  }
  .session-card:has(.status-pill.active) .card-art::after { opacity: 1; }
  .session-card:has(.status-pill.active) { border-color: color-mix(in srgb, var(--pc) 45%, var(--border)); }
  .session-card.exited .card-art { filter: grayscale(1); opacity: 0.75; }
  .session-card .card-top > .provider-icon { display: none; }
  .session-card .card-top { flex-wrap: wrap; gap: 6px 8px; }
  .session-card .card-title { flex-basis: 100%; }
  .card-aura { position: absolute; z-index: -1; overflow: hidden; pointer-events: none; opacity: 0; transition: opacity 0.4s var(--ease); }
  .card-aura::before {
    content: ""; position: absolute; inset: 0 0 auto; height: 3px;
    background: linear-gradient(90deg, transparent, var(--pc), transparent) 0 0 / 60% 100% no-repeat;
  }
  .session-card:has(.status-pill.active) .card-aura { opacity: 1; }
  .session-card:has(.status-pill.active) .card-aura::before { animation: professional-scan 1.8s ease-in-out infinite; }
  body:has(#terminal-panel:not([hidden])) main .card-aura::before { animation-play-state: paused; }

  .level-badge {
    position: absolute; left: 12px; bottom: 12px; z-index: 1; width: 68px; height: 22px;
    display: flex; align-items: center; justify-content: center; gap: 0.3em; border-radius: 6px;
    background: var(--surface); border: 1px solid var(--border); box-shadow: var(--shadow);
    color: var(--text); font-size: 0.72rem; font-weight: 600; font-variant-numeric: tabular-nums;
  }
  .level-badge::before { content: "Lv"; color: var(--muted); font-weight: 500; }
  .level-badge:empty { display: none; }
  .level-badge.level-up { animation: professional-pop 0.6s var(--ease); }

  .agent { border-width: 1.5px; font-size: 0.7rem; }
  .agent.summon { animation: professional-pop 0.4s var(--ease) both; }

  .meter-label::before {
    content: ""; display: inline-block; width: 7px; height: 7px; margin-right: 6px; border-radius: 2px;
    vertical-align: 0.05em; background: var(--ok);
  }
  .meter + .meter .meter-label::before, .meter + .meter .meter-fill { background: var(--meter-2); }
  .meter.low .meter-fill { background: var(--warn); }
  .meter.empty .meter-fill { background: var(--danger); }

  #empty { padding: 4px 16px 8px; text-align: center; }
  #empty::before {
    content: ""; display: block; width: 200px; height: 150px; margin: 4px auto 10px;
    background: var(--empty-art) center / contain no-repeat;
  }

  .btn { background: var(--surface); box-shadow: 0 1px 2px rgba(16, 24, 40, 0.05); }
  .btn:hover { background: var(--surface-2); border-color: color-mix(in srgb, var(--muted) 45%, var(--border)); }
  .btn.primary { background: var(--accent-fill); border-color: var(--accent-fill); box-shadow: 0 1px 2px rgba(16, 24, 40, 0.1); }
  .btn.primary:hover { filter: brightness(1.07); }
  .btn.danger:hover { border-color: var(--danger); }

  .models, .news-panel, .auth { box-shadow: var(--dialog-shadow); }
  .models, .auth { border-radius: 12px; }
  .terminal-panel { border-radius: 10px; }
  .news-latest { border-radius: 10px; }
  .news-row { transition: background-color 0.15s; }
  .news-row:hover { background: var(--surface-2); }
  .news-row:first-child { border-radius: 10px 10px 0 0; }
  .news-row:last-child { border-radius: 0 0 10px 10px; }
  .status-pill { border: 1px solid var(--border); }
  .status-pill.active { border-color: color-mix(in srgb, var(--ok) 35%, transparent); background: color-mix(in srgb, var(--ok) 8%, var(--surface)); }
  .status-pill.exited { border-color: color-mix(in srgb, var(--danger) 30%, transparent); background: color-mix(in srgb, var(--danger) 6%, var(--surface)); }

  .tier-s { --tier: #16a34a; --tier-ink: #166534; }
  .tier-a { --tier: #0891b2; --tier-ink: #155e75; }
  .tier-b { --tier: #3b82f6; --tier-ink: #1d4ed8; }
  .tier-c { --tier: #d97706; --tier-ink: #92400e; }
  .tier-d { --tier: #94a3b8; --tier-ink: #475569; }

  .providers.deal > .provider { animation: professional-rise 0.4s var(--ease) both; }
  .providers.deal > .provider:nth-child(2) { animation-delay: 0.04s; }
  .providers.deal > .provider:nth-child(3) { animation-delay: 0.08s; }
  .providers.deal > .provider:nth-child(4) { animation-delay: 0.12s; }
  .providers.deal > .provider:nth-child(5) { animation-delay: 0.16s; }
  .providers.deal > .provider:nth-child(n + 6) { animation-delay: 0.2s; }
  .session-card.enter { animation: professional-rise 0.35s var(--ease) both; }

  @media (max-width: 640px) {
    .session-card { padding-left: 92px; }
    .session-card .card-art, .session-card .card-aura { width: 76px; }
    .level-badge { left: 10px; width: 56px; }
  }

  @media (prefers-reduced-motion: reduce) {
    .provider, .session-card, .card-aura, .session-card .card-art::after { transition: none; }
    .providers.deal > .provider, .session-card.enter, .level-badge.level-up, .agent.summon,
    .session-card:has(.status-pill.active) .card-aura::before { animation: none; }
  }
}

:where(:root[data-skin="professional"][data-theme="dark"]) {
  --bg: #0d1015;
  --surface: #151921;
  --surface-2: #1b2029;
  --border: #272d38;
  --text: #e4e7ec;
  --muted: #98a1b0;
  --heading: #f2f4f7;
  --accent: #7aa2ff;
  --accent-fill: #2f6bed;
  --danger: #f2726a;
  --ok: #3ccf8e;
  --warn: #f0b44c;
  --gold: #64748b;
  --gold-ink: #94a3b8;
  --focus: #7aa2ff;
  --shadow: 0 1px 2px rgba(0, 0, 0, 0.35);

  --page-art: url("page.svg");
  --empty-art: url("ui/empty-state.svg");
  --art-bg: linear-gradient(160deg, color-mix(in srgb, var(--pc) 18%, #151921), color-mix(in srgb, var(--pc) 5%, #151921));
  --art-locked-bg: linear-gradient(160deg, #1d222b, #161a21);
  --card-hover-shadow: 0 8px 24px rgba(0, 0, 0, 0.35);
  --dialog-shadow: 0 24px 60px rgba(0, 0, 0, 0.55);
  --meter-2: #5b9cff;

  .tier-s { --tier: #34d399; --tier-ink: #bbf7d0; }
  .tier-a { --tier: #22d3ee; --tier-ink: #cffafe; }
  .tier-b { --tier: #60a5fa; --tier-ink: #cfe3ff; }
  .tier-c { --tier: #fbbf24; --tier-ink: #fde68a; }
  .tier-d { --tier: #94a3b8; --tier-ink: #d4dbe4; }

  .btn { background: var(--surface-2); box-shadow: none; }
  .btn:hover { background: #20262f; }
  .btn.primary { box-shadow: none; }
  .btn.danger { color: var(--danger); }
  .models::backdrop, .news-panel::backdrop { background: rgba(4, 6, 10, 0.6); }
}

@keyframes professional-rise { from { opacity: 0; transform: translateY(6px); } }
@keyframes professional-pop { from { opacity: 0.4; transform: scale(0.8); } 60% { opacity: 1; transform: scale(1.06); } }
@keyframes professional-scan { from { background-position: -60% 0; } to { background-position: 160% 0; } }