/* Estilos del login.
   El login es una página PÚBLICA y no depende de styles.css: se sirve sola, antes de
   requireAuth, y no tiene que arrastrar el CSS del panel. Por eso repite las variables. */

:root {
  --bg: #f4f6f8;
  --card: #ffffff;
  --input-bg: #ffffff;
  --border: #dfe4ea;
  --text: #1b2430;
  --muted: #6b7785;
  --accent: #0d9488;
  --accent-suave: rgba(13, 148, 136, 0.12);
  --peligro: #dc2626;
  --sombra: 0 1px 2px rgba(16, 24, 40, 0.06), 0 18px 40px rgba(16, 24, 40, 0.10);
}

:root[data-theme="dark"] {
  --bg: #0f1418;
  --card: #171e24;
  --input-bg: #111820;
  --border: #2a343d;
  --text: #e6edf3;
  --muted: #93a1ad;
  --accent: #2dd4bf;
  --accent-suave: rgba(45, 212, 191, 0.14);
  --peligro: #f87171;
  --sombra: 0 1px 2px rgba(0, 0, 0, 0.4), 0 18px 44px rgba(0, 0, 0, 0.45);
}

* { box-sizing: border-box; }

body {
  margin: 0;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  background: var(--bg);
  color: var(--text);
  font: 15px/1.5 system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  /* Gradientes suaves del color de acento, para que no sea una pantalla plana. */
  background-image:
    radial-gradient(60vw 60vw at 12% 8%, var(--accent-suave), transparent 60%),
    radial-gradient(52vw 52vw at 88% 92%, var(--accent-suave), transparent 62%);
  background-attachment: fixed;
}

.tarjeta {
  width: min(400px, 100%);
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 16px;
  box-shadow: var(--sombra);
  padding: 30px 26px;
  position: relative;
}

.tema-btn {
  position: absolute;
  top: 12px;
  right: 12px;
  border: 1px solid var(--border);
  background: transparent;
  color: var(--muted);
  border-radius: 9px;
  padding: 6px 9px;
  font-size: 15px;
  line-height: 1;
  cursor: pointer;
}

.tema-btn:hover { color: var(--accent); border-color: var(--accent); }

.logo {
  width: 56px;
  height: 56px;
  border-radius: 15px;
  display: block;
  margin: 0 auto 14px;
}

h1 { margin: 0; text-align: center; font-size: 22px; }
.subtitulo { margin: 6px 0 22px; text-align: center; color: var(--muted); font-size: 14px; }

.campo { display: flex; flex-direction: column; gap: 5px; margin-bottom: 14px; }
.campo label { font-size: 13px; color: var(--muted); }

input[type="text"], input[type="password"] {
  font: inherit;
  width: 100%;
  padding: 10px 12px;
  color: var(--text);
  background: var(--input-bg);
  border: 1px solid var(--border);
  border-radius: 10px;
}

input:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-suave); }

.con-boton { position: relative; }
.con-boton input { padding-right: 44px; }

.ver-btn {
  position: absolute;
  top: 50%;
  right: 6px;
  transform: translateY(-50%);
  border: 0;
  background: transparent;
  color: var(--muted);
  cursor: pointer;
  padding: 6px 8px;
  font-size: 15px;
  line-height: 1;
}

.ver-btn:hover { color: var(--accent); }

.recordar {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  color: var(--muted);
  margin-bottom: 18px;
  cursor: pointer;
}

.recordar input { accent-color: var(--accent); width: 16px; height: 16px; }

button.entrar {
  width: 100%;
  padding: 11px;
  border: 0;
  border-radius: 10px;
  background: var(--accent);
  color: #04211f;
  font: inherit;
  font-weight: 600;
  cursor: pointer;
}

button.entrar:hover:not(:disabled) { filter: brightness(1.08); }
button.entrar:disabled { opacity: 0.6; cursor: not-allowed; }

.error {
  display: none;
  margin: 0 0 14px;
  padding: 10px 12px;
  border-radius: 10px;
  background: rgba(220, 38, 38, 0.12);
  border: 1px solid var(--peligro);
  color: var(--peligro);
  font-size: 14px;
}

.error.visible { display: block; }

.pie { margin: 18px 0 0; text-align: center; color: var(--muted); font-size: 12px; }