:root {
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color-scheme: dark;
  --bg: #080a12;
  --bg-grad-a: #1c1230;
  --bg-grad-b: #0a0c16;
  --bg-grad-c: #070910;
  --surface: #10121eeb;
  --surface-solid: #0e101b;
  --surface-soft: #12101d;
  --surface-input: #0c0e19;
  --border: #352b48;
  --border-soft: #312a3f;
  --border-strong: #49365f;
  --text: #ece7f2;
  --text-dim: #a9a2b6;
  --text-muted: #8f829e;
  --text-faint: #797080;
  --accent: #ad72f4;
  --accent-strong: #8452cf;
  --accent-soft: #9c5ce51c;
  --accent-text: #cbb0ee;
  --ok: #63e7ad;
  --danger: #ff8fa3;
  --login-card-bg: rgba(10, 12, 18, .95);
  --topbar-bg: #0a0c15c9;
  --sidebar-bg: #080a12e8;
  --composer-grad: linear-gradient(transparent, #080a12 22%);
  --thead-bg: #171321;
  --thead-text: #cfafea;
  --chat-border: #292333;
  font-synthesis: none;
}

[data-theme="light"] {
  color-scheme: light;
  --bg: #f2f0f7;
  --bg-grad-a: #e8e2f4;
  --bg-grad-b: #f2f0f7;
  --bg-grad-c: #ece9f3;
  --surface: rgba(255, 255, 255, .96);
  --surface-solid: #ffffff;
  --surface-soft: #f7f5fb;
  --surface-input: #ffffff;
  --border: #ddd6e8;
  --border-soft: #e3ddec;
  --border-strong: #c9bfd8;
  --text: #2e2a38;
  --text-dim: #6a6480;
  --text-muted: #8b84a0;
  --text-faint: #a49db8;
  --accent: #7a4fc4;
  --accent-strong: #6a42b5;
  --accent-soft: #7a4fc41c;
  --accent-text: #5d3fa0;
  --ok: #1f9d63;
  --danger: #d65f7d;
  --login-card-bg: rgba(255, 255, 255, .97);
  --topbar-bg: rgba(250, 248, 253, .92);
  --sidebar-bg: rgba(244, 241, 249, .96);
  --composer-grad: linear-gradient(transparent, #f2f0f7 22%);
  --thead-bg: #efeaf7;
  --thead-text: #5d3fa0;
  --chat-border: #e6e0ee;
}

* { box-sizing: border-box; }
body { margin: 0; min-height: 100vh; color: var(--text); background: radial-gradient(circle at 65% 0%, var(--bg-grad-a) 0, var(--bg-grad-b) 38%, var(--bg-grad-c) 75%); }
button, input, textarea { font: inherit; }
button { cursor: pointer; }
[hidden] { display: none !important; }
.login-shell { position: relative; isolation: isolate; min-height: 100vh; display: grid; place-items: center; overflow: hidden; padding: 24px; }
.login-shell::before { content: ""; position: absolute; z-index: -2; inset: 0; background: radial-gradient(circle at 50% 18%, #68449a33, transparent 38%), radial-gradient(circle at 78% 72%, #25193f33, transparent 35%); }
.login-shell::after { content: ""; position: absolute; z-index: -1; inset: 0; opacity: .22; pointer-events: none; background-image: linear-gradient(#9680ad12 1px, transparent 1px), linear-gradient(90deg, #9680ad12 1px, transparent 1px); background-size: 4px 4px; mask-image: linear-gradient(to bottom, #000, transparent 88%); }
.login-card { width: min(440px, 100%); padding: 30px; border: 1px solid var(--border-strong); border-radius: 18px; background: var(--login-card-bg); box-shadow: 0 24px 80px #0009, 0 0 36px #9c6ade1a; }
.login-brand { display: flex; align-items: center; gap: 16px; margin-bottom: 28px; }
.login-wordmark { color: var(--text); font-size: 16px; font-weight: 800; letter-spacing: .34em; }
.login-brand-subtitle { margin-top: 4px; color: var(--text-muted); font-size: 9px; letter-spacing: .16em; }
.karla-core { position: relative; flex: 0 0 auto; width: 68px; height: 68px; display: grid; place-items: center; border-radius: 50%; filter: drop-shadow(0 0 16px #8955c944); }
.core-ring { position: absolute; inset: 3px; border: 1px solid #8e61c2aa; border-radius: 50%; }
.core-ring::before { content: ""; position: absolute; width: 4px; height: 4px; border-radius: 50%; background: #e0c7ff; box-shadow: 0 0 8px #c083ff; }
.core-ring-one { animation: core-spin 14s linear infinite; }
.core-ring-one::before { top: 3px; left: 18px; }
.core-ring-two { inset: 11px; border-color: #6e4c9caa; animation: core-spin-reverse 9s linear infinite; }
.core-ring-two::before { right: -2px; top: 19px; }
.core-ring-three { inset: 19px; border-color: #a46ce088; animation: core-spin 6s linear infinite; }
.core-ring-three::before { left: -2px; bottom: 6px; width: 3px; height: 3px; }
.core-letter { position: relative; display: grid; place-items: center; width: 27px; height: 27px; border-radius: 50%; color: #f1e3ff; background: radial-gradient(circle at 35% 30%, #b47aec, #623790 72%); box-shadow: 0 0 18px #a669df66; font-size: 11px; font-weight: 800; }
.login-heading { display: flex; align-items: flex-start; gap: 12px; margin-bottom: 22px; }
.login-lock { flex: 0 0 auto; width: 22px; height: 22px; fill: none; stroke: var(--accent); stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; }
.login-heading h1 { margin: 0 0 6px; color: var(--text); font-size: 18px; letter-spacing: 0; }
.login-heading p { margin: 0; color: var(--text-dim); font-size: 12px; line-height: 1.5; }
.login-form { display: flex; flex-direction: column; gap: 14px; }
.login-form label { margin: 0; color: var(--text-dim); font-size: 12px; letter-spacing: .02em; }
.login-form input { display: block; margin-top: 6px; padding: 11px 12px; border-radius: 9px; background: var(--surface-input); font-size: 14px; }
.password-field { position: relative; display: block; }
.password-field input { padding-right: 44px; }
.password-toggle { position: absolute; right: 6px; top: 11px; width: 32px; height: 32px; display: grid; place-items: center; padding: 0; border: 0; border-radius: 7px; color: var(--text-muted); background: transparent; }
.password-toggle:hover, .password-toggle:focus-visible { color: var(--accent); background: var(--accent-soft); outline: none; }
.password-toggle svg { width: 17px; height: 17px; fill: none; stroke: currentColor; stroke-width: 1.7; stroke-linecap: round; stroke-linejoin: round; }
.login-error { min-height: 0; margin: 0; color: var(--danger); font-size: 12px; }
.login-error:not(:empty) { padding: 9px 11px; border: 1px solid #ff6b6b59; border-radius: 8px; background: #ff6b6b14; }
.login-submit { margin-top: 2px; padding: 11px; font-weight: 600; }
.login-submit:disabled { opacity: .55; cursor: wait; }
.login-local { margin: 20px 0 0; color: var(--text-faint); text-align: center; font-size: 11px; line-height: 1.45; }
.eyebrow, .section-label { color: var(--accent-text); font-size: 11px; letter-spacing: .18em; margin: 0 0 6px; }
.muted { color: var(--text-dim); }
label { display: block; color: var(--text); font-size: 13px; margin: 20px 0 7px; }
input, textarea { width: 100%; color: var(--text); background: var(--surface-input); border: 1px solid var(--border-strong); border-radius: 11px; outline: none; }
input { padding: 13px 14px; }
input:focus, textarea:focus { border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-soft); }
.primary, .send { color: white; background: linear-gradient(135deg, var(--accent-strong), var(--accent)); border: 0; }
.primary { width: 100%; padding: 13px; border-radius: 11px; margin-top: 22px; font-weight: 700; }
.error { min-height: 18px; color: var(--danger); font-size: 13px; }
/* Variantes de la esfera KARLA para el chat (misma identidad que el login) */
.karla-core.mini { width: 38px; height: 38px; filter: drop-shadow(0 0 10px #8955c944); }
.karla-core.mini .core-ring { inset: 2px; }
.karla-core.mini .core-ring-two { inset: 8px; }
.karla-core.mini .core-ring-three { inset: 13px; }
.karla-core.mini .core-ring-one::before { top: 2px; left: 10px; width: 3px; height: 3px; }
.karla-core.mini .core-ring-two::before { right: -1px; top: 10px; width: 3px; height: 3px; }
.karla-core.mini .core-ring-three::before { left: -1px; bottom: 3px; width: 2px; height: 2px; }
.karla-core.mini .core-letter { width: 15px; height: 15px; font-size: 7px; }
.karla-core.welcome-core { width: 78px; height: 78px; margin: 0 auto 15px; }
.karla-core.welcome-core .core-ring { inset: 4px; }
.karla-core.welcome-core .core-ring-two { inset: 13px; }
.karla-core.welcome-core .core-ring-three { inset: 22px; }
.karla-core.welcome-core .core-letter { width: 31px; height: 31px; font-size: 13px; }
.brand-mark { width: 58px; height: 58px; display: grid; place-items: center; border-radius: 50%; border: 1px solid var(--accent); color: var(--accent-text); font-weight: 800; box-shadow: inset 0 0 18px #8b4bd533, 0 0 25px #8b4bd522; }
.brand-mark.small { width: 38px; height: 38px; font-size: 13px; }
.app-shell { min-height: 100vh; display: grid; grid-template-columns: 260px minmax(0, 1fr); }
.sidebar { position: sticky; top: 0; height: 100vh; overflow-y: auto; padding: 22px 16px; border-right: 1px solid var(--border); background: var(--sidebar-bg); display: flex; flex-direction: column; gap: 20px; }
.brand-row { display: flex; align-items: center; gap: 12px; letter-spacing: .18em; }
.brand-row small { display: block; font-size: 8px; color: var(--text-muted); margin-top: 3px; letter-spacing: .1em; }
.client-card { padding: 14px; border: 1px solid var(--border-strong); border-radius: 12px; background: var(--surface-soft); }
.client-card span { display: block; color: var(--text-muted); font-size: 10px; letter-spacing: .16em; }
.client-card strong { display: block; color: var(--ok); margin: 5px 0; font-size: 13px; }
.client-card small { color: var(--text-dim); }
.domains { display: flex; flex-wrap: wrap; gap: 4px; }
.domain { display: inline-flex; align-items: center; padding: 2px 7px; border-radius: 999px; border: 1px solid var(--border-strong); color: var(--accent-text); background: var(--surface-soft); font-size: 9px; line-height: 1.3; white-space: nowrap; }
.usage-panel { padding-top: 2px; }
.usage-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 8px; }
.usage-grid > div { min-width: 0; padding: 10px; border: 1px solid var(--border-strong); border-radius: 10px; background: var(--surface-soft); }
.usage-grid span { display: block; color: var(--text-muted); font-size: 9px; letter-spacing: .13em; }
.usage-grid strong { display: block; overflow: hidden; margin-top: 5px; color: var(--accent-text); font-size: 13px; text-overflow: ellipsis; }
.usage-limits { margin-top: 10px; }
.usage-limits-title { color: var(--text-muted); font-size: 9px; letter-spacing: .13em; margin-bottom: 4px; }
.usage-row { display: flex; justify-content: space-between; align-items: center; font-size: 11px; padding: 4px 0; border-bottom: 1px solid var(--border-soft); }
.usage-row:last-child { border-bottom: 0; }
.usage-row span { color: var(--text-muted); }
.usage-row b { color: var(--text); font-weight: 600; white-space: nowrap; }
.usage-row b.excedido { color: #ff6b6b; }
.message-usage { margin-top: 8px; font-size: 11px; font-family: monospace; color: var(--accent-text); }
.message-usage b { color: var(--ok, #7dd3a8); }
.usage-grid > div:last-child strong { color: var(--ok); }
.usage-panel > small { display: block; margin-top: 7px; color: var(--text-faint); text-align: center; font-size: 9px; }
.sidebar-actions { margin-top: auto; display: grid; gap: 8px; }
.actions-menu { display: grid; gap: 8px; padding: 10px; border: 1px solid var(--border-soft); border-radius: 12px; background: var(--surface-soft); }
.actions-menu-btn { display: flex; align-items: center; justify-content: space-between; width: 100%; }
.actions-caret { font-size: 10px; opacity: .7; }
.actions-menu[hidden] { display: none; }
#voice-toggle.muted { opacity: .55; filter: grayscale(.4); }
#voice-toggle.muted::after { content: ' — no habla'; font-size: 10px; }
.voice-config { display: grid; gap: 6px; padding: 8px; border: 1px solid var(--border-soft); border-radius: 8px; background: var(--surface-soft); }
.voice-config label { font-size: 10px; color: var(--text-muted); letter-spacing: .05em; }
.voice-config select { width: 100%; font-size: 11px; }
.voice-config input[type="range"] { width: 100%; }
.voice-config small { font-size: 10px; color: var(--text-muted); }
.voice-config button { font-size: 11px; }
.secondary { padding: 10px; border: 1px solid var(--border-strong); color: var(--text); background: var(--surface-soft); border-radius: 10px; }
.workspace { min-width: 0; min-height: 100vh; display: grid; grid-template-rows: auto 1fr auto; }
.topbar { min-height: 78px; padding: 16px 28px; border-bottom: 1px solid var(--border); display: flex; justify-content: space-between; align-items: center; background: var(--topbar-bg); backdrop-filter: blur(12px); }
.topbar h2 { margin: 0; font-size: 19px; }
.user-badge { padding: 8px 12px; border: 1px solid var(--border-strong); border-radius: 999px; color: var(--accent-text); font-size: 12px; }
.messages { padding: 28px max(28px, calc((100% - 900px) / 2)); overflow-y: auto; min-height: 0; }
.welcome { text-align: center; max-width: 590px; margin: 6vh auto 24px; color: var(--text-dim); }
.welcome .brand-mark { margin: 0 auto 15px; }
.welcome h3 { color: var(--text); font-size: 20px; }
.message { max-width: 900px; margin: 0 auto 14px; border: 1px solid var(--border); border-radius: 15px; background: var(--surface); padding: 15px 17px; }
.message.user { border-left: 3px solid #7658e7; }
.message.assistant { border-left: 3px solid var(--accent); }
.message-head { display: flex; justify-content: space-between; color: var(--text-muted); font-size: 11px; margin-bottom: 9px; }
.message-body { line-height: 1.58; color: var(--text); overflow-wrap: break-word; }
.message-body p { margin: 0 0 10px; }
.message-body p:last-child { margin-bottom: 0; }
.message-body h1, .message-body h2, .message-body h3, .message-body h4 { margin: 14px 0 8px; color: var(--text); line-height: 1.3; }
.message-body h1 { font-size: 1.15rem; border-bottom: 1px solid var(--chat-border); padding-bottom: 6px; }
.message-body h2 { font-size: 1.02rem; }
.message-body h3, .message-body h4 { font-size: .95rem; }
.message-body ul { margin: 0 0 10px; padding-left: 22px; }
.message-body li { margin: 3px 0; }
.message-body table { margin: 10px 0 12px; }
.message-body table th, .message-body table td { white-space: nowrap; }
.message-body code { background: var(--surface-soft); border: 1px solid var(--border-soft); border-radius: 5px; padding: 1px 5px; font-size: 11.5px; }
.message-body hr { border: 0; border-top: 1px solid var(--chat-border); margin: 12px 0; }
.result-table { overflow-x: auto; margin-top: 16px; border: 1px solid var(--border-soft); border-radius: 10px; }
table { width: 100%; border-collapse: collapse; font-size: 12px; }
th, td { text-align: left; padding: 9px 11px; border-bottom: 1px solid var(--chat-border); white-space: nowrap; }
th { color: var(--thead-text); background: var(--thead-bg); }
.chart { margin-top: 16px; padding: 10px; border: 1px solid var(--border-soft); border-radius: 10px; background: var(--surface-solid); }
.chart canvas { width: 100%; height: 270px; display: block; }
.message-actions { margin-top: 12px; display: flex; justify-content: flex-end; }
.message-actions button { color: var(--text); background: var(--surface-soft); border: 1px solid var(--border-strong); padding: 7px 10px; border-radius: 8px; }
.composer-zone { position: sticky; bottom: 0; padding: 8px max(28px, calc((100% - 900px) / 2)) 18px; background: var(--composer-grad); }
.progress { color: var(--accent-text); font-size: 12px; margin: 0 8px 7px; }
.progress::before { content: ""; display: inline-block; width: 7px; height: 7px; margin-right: 8px; border-radius: 50%; background: var(--accent); animation: pulse 1s infinite; }
.composer { display: grid; grid-template-columns: 1fr 44px; gap: 10px; padding: 8px 8px 8px 16px; border: 1px solid var(--border-strong); border-radius: 15px; background: var(--surface-solid); }
.composer textarea { resize: none; min-height: 42px; max-height: 160px; padding: 10px 0; border: 0; background: transparent; color: var(--text); }
.composer textarea:focus { box-shadow: none; }
.send { width: 42px; height: 42px; align-self: end; border-radius: 11px; font-size: 18px; }
.composer-zone > small { display: block; text-align: center; color: var(--text-faint); font-size: 10px; margin-top: 7px; }
@keyframes pulse { 50% { opacity: .35; transform: scale(.8); } }
@keyframes core-spin { to { transform: rotate(360deg); } }
@keyframes core-spin-reverse { to { transform: rotate(-360deg); } }
@media (max-width: 760px) {
  .login-card { padding: 24px; }
  .login-wordmark { letter-spacing: .26em; }
  .app-shell { grid-template-columns: 1fr; }
  .sidebar { position: fixed; top: 0; left: 0; bottom: 0; width: min(300px, 85vw); height: 100%; z-index: 120; border-right: 1px solid var(--border-strong); padding: 14px; gap: 12px; overflow-y: auto; background: var(--surface-solid); transform: translateX(-105%); transition: transform .25s ease; }
  .sidebar.sidebar-open { transform: translateX(0); box-shadow: 0 0 40px rgba(0,0,0,.5); }
  .sidebar::before { content: ''; position: fixed; inset: 0; background: rgba(0,0,0,.5); opacity: 0; pointer-events: none; transition: opacity .25s ease; z-index: -1; }
  .sidebar.sidebar-open::before { opacity: 1; pointer-events: auto; }
  .sidebar section:not(.client-card), .sidebar-actions { display: grid; }
  .brand-row { display: flex; }
  .sidebar-close { display: inline-flex; align-items: center; justify-content: center; position: absolute; top: 10px; right: 10px; width: 30px; height: 30px; border-radius: 8px; border: 1px solid var(--border-strong); color: var(--text); cursor: pointer; font-size: 14px; }
  .menu-btn { display: inline-flex; align-items: center; justify-content: center; width: 36px; height: 36px; border-radius: 10px; border: 1px solid var(--border-strong); background: var(--surface-soft); color: var(--text); font-size: 17px; cursor: pointer; }
  .topbar-left { display: flex; align-items: center; gap: 10px; }
  .topbar { padding: 14px 18px; }
  .messages, .composer-zone { padding-left: 14px; padding-right: 14px; }
}
.menu-btn { display: none; }
.sidebar-close { display: none; }

.multi-selector-hidden { display: none !important; }
.multi-selector { display: flex; align-items: center; gap: 8px; max-width: 860px; margin: 0 auto 8px; padding: 0 24px; flex-wrap: wrap; }
.multi-selector select { background: var(--surface-soft); color: var(--text); border: 1px solid var(--border-strong); border-radius: 8px; padding: 5px 9px; font-size: .74rem; max-width: 240px; flex: 0 1 auto; }
.multi-selector .toggle-cruce { display: flex; align-items: center; gap: 5px; font-size: .68rem; color: var(--text-muted); cursor: pointer; margin-left: auto; white-space: nowrap; }
.multi-selector .toggle-cruce input { accent-color: var(--accent); margin: 0; }

.traces-modal { position: fixed; inset: 0; z-index: 100; display: grid; place-items: center; background: rgba(0,0,0,.55); padding: 24px; }
.traces-card { width: min(860px, 100%); max-height: 82vh; display: flex; flex-direction: column; border: 1px solid var(--border-strong); border-radius: 14px; background: var(--surface-solid); overflow: hidden; }
.traces-head { display: flex; justify-content: space-between; align-items: center; padding: 14px 18px; border-bottom: 1px solid var(--border); }
.traces-head h3 { margin: 0; font-size: 15px; }
.traces-head .secondary { padding: 7px 12px; font-size: .75rem; margin: 0; }
.traces-list { overflow-y: auto; padding: 12px 16px; display: grid; gap: 10px; }
.trace-item { border: 1px solid var(--border); border-radius: 10px; padding: 10px 12px; background: var(--surface-soft); }
.trace-item b { font-size: .8rem; }
.trace-item small { display: block; color: var(--text-muted); margin-top: 4px; font-size: .72rem; }
.trace-item pre { margin-top: 6px; padding: 8px; border-radius: 6px; background: var(--surface-input); font-size: .68rem; overflow-x: auto; white-space: pre-wrap; }
.trace-rama { display: inline-block; padding: 2px 8px; border-radius: 999px; font-size: .66rem; background: var(--accent-soft); color: var(--accent-text); }

.composer-input-wrap { position: relative; min-width: 0; }
.herramientas-dropdown { position: absolute; bottom: calc(100% + 6px); left: 0; right: 0; z-index: 60; max-height: 240px; overflow-y: auto; border: 1px solid var(--border-strong); border-radius: 10px; background: var(--surface-solid); box-shadow: 0 -8px 30px rgba(0,0,0,.4); }
.herramienta-opt { display: flex; align-items: center; gap: 10px; padding: 8px 12px; cursor: pointer; border-bottom: 1px solid var(--border); }
.herramienta-ico { flex: 0 0 auto; width: 30px; height: 30px; display: grid; place-items: center; font-size: 1.05rem; border-radius: 8px; background: var(--accent-soft); }
.herramienta-opt:hover { background: var(--accent-soft); }
.herramienta-opt b { font-size: .78rem; }
.herramienta-opt small { color: var(--text-muted); font-size: .68rem; }
.herramienta-pill { display: inline-flex; align-items: center; gap: 6px; margin: 6px 0 0 6px; padding: 3px 10px; border-radius: 999px; background: var(--accent-soft); color: var(--accent-text); font-size: .7rem; }

.welcome-help { margin-top: 18px; display: grid; gap: 8px; text-align: left; max-width: 460px; margin-left: auto; margin-right: auto; }
.help-row { font-size: .74rem; color: var(--text-dim); line-height: 1.5; padding: 8px 12px; border: 1px solid var(--border); border-radius: 9px; background: var(--surface-soft); }
.help-row b { color: var(--accent-text); }
.help-key { display: inline-grid; place-items: center; width: 20px; height: 20px; border-radius: 6px; background: var(--accent-soft); color: var(--accent-text); font-weight: 800; font-size: .78rem; margin-right: 4px; }